DE4017605A1 - METHOD AND DEVICE FOR THE PRODUCTION OF PARTICULARLY WAVED FIBER-CONCRETE ELEMENTS - Google Patents

Abstract

In order both to improve the quality of curable fibrous concrete products and to provide an apparatus which is better than the prior art, is less susceptible and requires less cleaning and servicing effort, the invention provides that, after carrying out the moulding operation, the correspondingly deformable, still not fully cured plates on a mould table are backed with formwork laid on them from above and then turned together with the formwork through 180 DEG . A sheet provided on the still curable plate, on the underside during transporting, then comes to lie on the top. The production process can be performed by means of a mould table designed as a turning table. <IMAGE>

Description

The invention relates to a method and an apparatus for Manufacture of corrugated fiber concrete elements in particular the preamble of claim 1 or 3.

In the production of fiber concrete elements, he is in one most step so-called fresh, d. H. uncured and malleable company Serbetonplatten manufactured, which then for hardening in a mold must be filed. In the manufacture of plate-shaped, d. H. flat fiber concrete elements do not have to undergo a large deformation process be performed. Wavy Fa. Are also known Serbetonelemente, which after the curing process as corrugated sheets for Roof and wall can be used. Thereby under the term "Fiber concrete elements" also understood elements that, for example contain only fibers and cement without further additives and are commonly referred to as fiber cement elements.  

In practice, the still uncured are malleable and open a correspondingly desired length of fiber concrete slabs usually separated by an acceleration belt. In one Subsequent step is lowered by means of a top Table vacuum cleaner by creating negative pressure which is still formable uncured plate sucked in, raised and over a mold move the table and lower it there. On the bottom of the plate there may be a film that is used to ensure that the fri uncured and malleable plate of the Lift the conveyor belt over the suction cup and move it can.

Especially in the production of corrugated sheets Form table from a so-called corrugated or undulating table, which is located at the Put down the still damp plate in a stretched, flat state and its rollers are then regulated in the transverse direction to be moved so that the desired wave structure the plate is created.

Then from the back of the plate, i. H. so from above, another plate vacuum, d. H. in the production of Corrugated sheets a so-called corrugated vacuum cleaner on the deformed, still moist and put on the uncured plate to suck it on lift and move over a sheet steel form in which the uncured plate is deposited.

This process is repeated, using suitable stacking elements mente the forms with those stored in them and in corresponding Shaped plates are stacked one above the other for curing the.

However, this method has several disadvantages.

Since the products are not yet hardened and therefore soft, he always give impressions of the suction pad covering on the Back of the lifted and moved by the suction and uncured slabs.  

These deformations can be particularly disadvantageous when laying such panels for example as corrugated roof panels covers in so far as when covering at the edge area of several roof panels by the suction cups of this type gene may have been caused that an optimal seal coverage and coverage is no longer possible.

Another serious disadvantage is that the formwork ver soiled and cleaned before reuse have to. However, the smallest dirt particles remain in the bed sheet metal or get stuck before stopping the slabs brought into the preliminary final shape Dirt particles in the formwork, so these foreign bodies are pressed per, stones or other objects, over the foil in the Surface of the panels to be hardened. Just through that Foil, however, this creates crater formations on the upper surface surface can be clearly seen later, especially since the panel outer wall on the side of the film is much smoother than the back. Everything However, no final inspection is possible in this condition Lich, since the later upper and outer formed by the film side in the formwork itself and only the back is free upwards.

Finally, the suction cup coverings can also quickly ver dirty, so that the production process also to Reini supply of the suction cup covering must be interrupted frequently. At heavily soiled vacuum cleaner coverings can even lead to this ren that the sucked elements fall down and destroyed the. Finally, the suction cup coverings have to be worn le not only cleaned frequently, but also replaced with new ones will.

It is therefore an object of the present invention to achieve the above-mentioned. To overcome disadvantages according to the prior art and a ver drive and a device for manufacturing in particular corrugated fiber concrete elements to create such elements easier and faster to manufacture, their goodness compared to that  State of the art especially on the later upper and outer side and the curing process of the panels themselves improve.

The object is achieved according to the method speaking ent in claim 1 and with respect to the device speaking solved the features specified in claim 3. Before partial embodiments of the invention are in the dependent claims Chen specified.

The present invention provides many surprising advantages parts achieved.

Above all, a possibility is shown, such as without use which is necessary in the course of production according to the state of the art Such suction can be made of fiber reinforced concrete slabs. According to the invention, a so-called turning table is used for this purpose the plates to be deformed and still hardened are deposited will. After performing the necessary Ver molding process is then a formwork from behind placed around the entire arrangement using the turntable Rotate 180 ° and lay down. This offers above all lem the decisive advantage that the still uncured and on their transport and underside with a film Plate in this arrangement with the film lying down as well can be placed on the molding table, so that after mounting the film from behind and turning 180 ° comes to lie on top. Since the later top and The outside of the hardened plate can be used immediately Final inspection regarding the quality of the surface quality be made. In addition, you can now view this page none, as in the prior art, wells and Form more craters, because the plate to be hardened on this one Upper and outer surface no longer forming side, but on its back side compared to the prior art is filed.  

Finally, another remarkable advantage is achieved. According to the invention, namely during the hardening a kind of sandwich construction with an overhead film, the in between there are still moist to harden and counter if necessary, deformed plate and the underlying Scha lung. This sandwich structure creates a water vapor tight and envelope closed on all sides compared to the prior art lung, which significantly improves the curing process and a higher final strength of the product through optimal post-treatment is achieved.

Another great advantage results from the fact that suction cups for Cross transport of the not yet hardened plates no longer be be compelled. So far, only plates could be smaller in a series Length because the suction surfaces are covered with masks hen had to be, which corresponded to the dimensions of the plates.

According to the invention, the masks are no longer necessary half the changeover times for attaching the masks are eliminated. The lengths of the plates are arbitrary and theoretically plat manufactured with constantly changing length dimensions without waste.

In a particularly preferred embodiment, the shape table, d. H. usually the corrugated table, as a double molding table, d. H. So be designed as a double wave table, so that in double cycle proceed after turning and stopping one hardening plate with deposited formwork on each the side of which is a next plate to be hardened on the mold is placed on the table.

Regarding the transfer of a plate that is still soft and moist a so-called shooting is preferred on the form or wave table band related.

Other advantages, details and features of the invention ben below he from the drawings explained exemplary embodiments. The following show in detail:

Figure 1 is a schematic side view of the device according to the Invention with on the drawing plane to the shooting table aligned shooting belt.

Figure 2 is a schematic side view of the shooting range in the area of the transfer on a doppelseiti gene molding table.

Fig. 3 is a schematic front view of a formwork.

In Fig. 1 is a schematic side view in the middle of a molding table 1 , specifically a double-corrugated table 1 is shown, which can be rotated step by step around its turning axis 3 by 180 ° with the appropriate drive.

Below the molding or turning table 1 there is a transverse shifting belt 5 , above which a shape, ie a shaped sheet or a formwork 7 with - which will be discussed later - occupied yet to be hardened, but in the final shape already brought plate 9 up to one Transfer and Stapelein device 10 can be brought, which in the embodiment shown for example consists of a hydraulic gripper 11 and a hydraulic jack 13 .

Finally, a further lifting and feeding device 15 is provided, by means of which formwork 7 provided on a pallet 17 can be gripped with a suction device 19 , lifted and transported to the molding table 1 .

Finally, it is schematically indicated in Fig. 1 that the transfer and stacking device 10 , such as the lifting and feeding device 15 , connected to one another via a carrying device 21 and can be moved together via an actuating device 23 who can.

In Fig. 2, an acceleration belt 25 and a subsequent shooting belt 27 is shown schematically, which with its leading end in the transport direction 27 'to the rear end of the forming table 1 before and then slowly retractable, the deflection rollers 29 moving forward and back together will. The mode of operation is described in more detail below.

In a production line not shown in detail, for example, continuously moist, ie not yet hardened, formable fiber-reinforced concrete elements with only low green strength can be produced, the width of which already corresponds to a pre-selected width and the length of a separator, not shown, is set to a desired one Dimension can be cut to length. The thus separated uncured plates 9 are sepa riert from each other by an acceleration belt and the shuttle conveyor shown in Fig. 2 supplied by the circulating conveyor belt 27 '' the above-mentioned ten Plat be individually transported 9.

So that the still moist and uncured plates 9 on the conveyor belt 27 '' of the conveyor belt 27 as well as the preceding conveyor or acceleration belts do not adhere, the still uncured plates 9 are covered with a film 31 , which always ge during the entire production process stick together to the corresponding bottom and transport side of the plates 9 .

By using the film, the usual drainage is Plates not necessary. There is therefore no environmental impact of the alkaline process water.  

In order to transfer the above-mentioned still uncured plate 9 with film 31 underlaid on the bottom and transport side, the shooting belt 27 shown in FIG. 2 is advanced with its front end to the end of the shaping table 1 and then slowly moved backwards so that, as in FIG is illustrated. 2, is stored by direct toward the end to the front end of the mold table 1 on only a small vertical offset that still formable unaushärtete plate 9 on the completely flat mold table 1. In FIG. 1, the shuttle conveyor 27 visible from its front end.

In the exemplary embodiment shown, the shaping table 1 is designed as a corrugated or so-called undulating table in order to finally produce corrugated fiber concrete panels, also referred to as corrugated panels for short.

Such an undulating or corrugated table consists - which is known and is not part of the invention - of a plurality of roller or arch bodies 33 aligned parallel to one another with a stretched, even stretchable supporting covering 35 . After dropping a wet plate 9 , the parallel aligned roller and sheet body 33 can be moved towards each other, so that the associated with the corrugated and support table and there always ver supporting fabric 35 between the roller and sheet body 33 sagging wavy, and because of the weight of the placed deformable plate 9th This brings the plate 9 into its final shape. If necessary, the corrugated sheet can also be sucked in by means of negative pressure during the deformation.

Thereafter, the actuating device 23 and the Tragein device 21 , the lifting and feeding device 15 is actuated and moved so that from the empty stack 17 formwork over the suction device 19 shown , is lifted and moved to a position until the formwork 7 is directly above the brought into the final shape, but still un-hardened plate 9 above the molding table 1 . Then, by lowering the lifting and feeding device 15, the formwork 7 is placed on the upper rear side of the plate 9 and secured by means of the locking holder 37 provided on the molding table 1 .

Then the forming table 1 is rotated about its turning axis 3 by 180 °. In the still locked position, therefore, the formwork 7 comes to lie below, within which the still moist, but brought into the final shape and preformed plate 9 in the exemplary embodiment shown is to lie in wave form with the film 31 lying on top.

Thereafter, the locking holders 37 are opened in order to transfer the formwork 7 with the preformed uncured plate 9 therein and the film 31 lying on top to the transport device designed as a transverse sliding belt 5 .

For this purpose designed as transverse displacement volume 5 handover transport device itself is provided even with a Höhenverstelleinrich tung 5 ', which be the time of the immediate Überga lifted from the mold table and is lowering bar after release of the block handle 37 into the position shown in Fig. 1 lowered position again.

Then the plate with the formwork 7 is moved to below the transfer and stacking device 10 .

In order that the transfer and stacking device 10 shown in FIG. 1 can grip the formwork 7 covered with the plate, the entire actuating and carrying device 23 , 21 must be moved back into the position shown in FIG. 1. In this position, the lifting and feeding device 15 can again raise a new formwork 7 , while at the same time on the transfer and stacking device 10 with the hydraulic gripper 11 , the formwork 7 occupied by the pre-formed, still moist plate 9 is gripped, lifted via the hydraulic jack 13 and after renewed procedure of the entire actuating and carrying device 23 , 21 proceed to a finished stack 39 and is placed on top of one another in a stacking arrangement.

At the same time, while laying down on the production stack 39 , a new formwork 7 is again placed on a preformed, still moist plate 9 lying on the forming table 1 .

As shown in Fig. 1, a double molding table 1 , specifically a double corrugated table 1 is used, which works ar in the double cycle. In other words, while the formwork 7 that has already been turned and covered with the preformed plate 9 is placed on the underside, a new, still moist, supplied plate 9 is placed on the upper side of the shaping table after the stretching process and brought into the final shape, to then already place another formwork 7 on the preformed plate 9 .

Referring to Fig. 3 is to be shown only schematically that the formwork 7 can survive in lateral and longitudinal direction about the actual size of the deformed plates 9, for example, and that here for example respectively on the underside of the edge of the formwork 7 at appropriate locations spacer 42 can be provided to stack a plurality of formwork 7 with the inside be placed and finally brought into shape plates 9 without the underside of an upper formwork 7 rests on the underlying in a lower-lying formwork 7 to be hardened plate.

Claims (12)

1. A process for the production of, in particular, corrugated Faserbe clay elements, in which an uncured deformable be covered plate ( 9 ) with the underlying film ( 31 ) on a preferably in the form of a corrugated table formed mold table ( 1 ) and brought into their final shape and after carrying out the molding process in a formwork ( 7 ) corresponding to the desired shaping for curing and / or hardening and optionally stacked, characterized in that on the molding table ( 1 ) deposited uncured and still moldable plate after carrying out the Forming process from above, a provided formwork ( 7 ) placed and the molding table ( 1 ) with the downward-facing film ( 31 ) and be formed thereon, but not yet hardened plate ( 9 ) and the formwork ( 7 ) lying on top turned and then is only subjected to the hardening and hardening process. 2. The method according to claim 1, characterized in that the turning process on the molding table ( 1 ) is carried out as a two-stroke process, so that during the placement of formwork ( 7 ) on the still uncured plate ( 9 ) on the molding table ( 1 ) the plate ( 9 ) previously deposited and turned with the formwork ( 7 ) on the underside of the molding table ( 1 ) is passed on to a transport and transfer device. 3. Device for the production of, in particular, corrugated fiber concrete elements according to claim 1 or 2, characterized by a formed as a turning table, a shaped yet unhardened plate ( 9 ) with formwork ( 7 ) deposited from above and with its downward-facing formwork ( 7 ) from adjustable or transferable molding table ( 1 ). 4. Apparatus according to claim 3, characterized in that the shaping table designed as a turning table ( 1 ) as a double shaping table ( 1 ) with two superposed and 180 ° around the turning axis ( 3 ) of the shaping table ( 1 ) rotated with respect to each other Working areas is trained. 5. Apparatus according to claim 3 or 4, characterized in that in a plane above the molding table ( 1 ) a shooting belt ( 27 ) for transferring an uncured yet moldable plate ( 9 ) on the molding table ( 1 ) is provided movable. 6. The device according to claim 5, characterized in that the shooting belt ( 27 ) parallel to the turning axis ( 3 ) of the molding table ( 1 ) is movable. 7. Device according to one of claims 3 to 6, characterized in that on the molding table ( 1 ) locking holder ( 37 ) for fixing and holding the formwork ( 7 ) are provided. 8. Device according to one of claims 3 to 7, characterized in that for the transfer of a with an as yet uncured deformed plate ( 9 ) filled and underlying formwork ( 7 ) to a downstream transport device ( 5 , 5 ') one the vertical Height distance between the transport device ( 5 , 5 ') and the lifting device ( 5 ') bridging the filled formwork ( 7 ) held at the bottom after the turning process on the molding table ( 1 ) is provided. 9. The device according to claim 8, characterized in that the transport device consists of a with a height adjustment ( 15 ') equipped shift belt ( 5 ). 10. Device according to one of claims 3 to 9, characterized in that a lifting and feeding device ( 15 ) for He grab, move and lower empty downward facing formwork ( 7 ) on the on the molding table ( 1 ) deformable uncured plates ( 9 ) is provided. 11. Device according to one of claims 1 to 10, characterized in that a transfer and stacking device ( 10 ) for gripping, lifting, moving and lowering with the deformed yet uncured panels ( 9 ) filled formwork ( 7 ) is easily seen . 12. The apparatus of claim 10 or 11, characterized in that the lifting and feeding device ( 15 ) and the transfer and stacking device ( 10 ) can be moved via a common support device ( 21 ).