EP2463034B1 - Cleaning device for palette forms - Google Patents

Description

The invention relates to a cleaning device for a pallet mold for the production of prefabricated concrete components, comprising at least one scraping element, with the pollution objects of the surface to be cleaned of the pallet shape are schabbar and at least one brush. Such a device is for example in DE 43 26 318 A1 described. In particular, in the production of precast concrete components in pallet circulation systems, a high degree of production efficiency and high demands on the quality of the manufactured precast concrete components is required. A trained in the form of a production line pallet circulating system usually includes a Abhebestation for the hardened precast concrete components and a demolition for removing the formwork and a cleaning station for cleaning the pallet form on which the precast concrete component is manufactured, and optionally the formwork and the cured precast concrete component. Subsequently, in principle, a new production cycle for a further precast concrete component can be started with the pallet form.

In this case remain after lifting the hardened precast concrete components and removing the formwork on the pallet form pollution objects of various types. To ensure the quality of the next concrete precast component to be manufactured, the pallet form must be cleaned before a new occupancy with formwork elements and the subsequent manufacturing process of precast concrete component of the objects of pollution. This is usually done by a cleaning device, which is associated with a cleaning station mentioned above the pallet circulation system.

In this case, cleaning devices of the prior art comprise one or more cleaning agents, which lead to a cleaning of the same by a relative movement between the cleaning agent and the pallet shape. If the cleaning device is basically stationary, the pallet shape moves "under" the cleaning device and is cleaned in a continuous process. On the other hand, there are movably mounted cleaning devices or cleaning devices with movably mounted cleaning agents, wherein the Move cleaning devices or the detergent relative to the stationary pallet shape while cleaning. The cleaning device and / or the cleaning agent can be moved in different directions of movement over the pallet shape.

A scraping member serves to remove solid debris such as e.g. Concrete residues, Styrofoam pieces, remnants of wood formwork, etc. In particular, not removed from the scraper or incurred by the scraping finer pollution objects are removed by a brush, for example, rotates about a substantially parallel to the surface to be cleaned arranged axis. This brush can extend over the entire pallet shape and thus serve to clean the entire pallet shape. Usually, the pallet shape is arranged horizontally, so that the brush rotates in this case in the operating state about a horizontal axis.

Additionally or alternatively, the cleaning device may comprise further variously formed brushes, such as e.g. at least one disc brush rotating about an axis perpendicular to the surface to be cleaned, e.g. Dries dried Betonmilchreste from the pallet form or from the shell elements. Laterally arranged mold brushes are used to clean the fixed or hinged side molds.

To produce the precast concrete components, it is necessary to oil areas of the formwork and the pallet mold, in order subsequently to separate the hardened precast concrete component from the formwork or the pallet form and to protect it from corrosion. The oiled surfaces with form oil pose a problem for the cleaning, as the rotating brush is contaminated by the contact of the oiled surfaces with the finer dirt particles described above and therefore on the pallet shapes that should be cleaned, despite cleaning oil residues in the longitudinal direction of the rotating Brush remain. These traces of oil are becoming increasingly strong as the number of manufacturing cycles increases, since the degree of contamination of the rotating brush increases.

In addition, with a cleaning device as described above, it is difficult to remove the marks left in the oil residues caused by holding magnets which hold the formwork on the pallet form.

Such contaminated pallet shapes or formwork are particularly a problem when a smooth fair-faced concrete prefabricated component is produced in a next manufacturing cycle, after stripping this exposed concrete prefabricated according to the contaminants more or less well-trained strokes or impressions of dirt by the magnets due to improper cleaned pallet form are recognizable.

To avoid these contaminants of exposed concrete prefabricated components, it may be provided to manually clean the pallet forms and possibly also the formwork after the cleaning process by the cleaning device, wherein the contaminated oil film is removed and a renewed oiling of the formwork and the pallet shape is necessary. This manual activity is associated with a high workload.

Moreover, in the case of manual cleaning, there may be no formwork oil among the formwork elements arranged in various shapes on the pallet mold, so that the pallet form can oxidize in these areas, especially if the pallet mold is left in the drying chamber for a longer time, for example during a weekend remains. This oxidation also pollutes the pallet shape. Such contaminants are again visible on the manufactured precast concrete components.

The object of the invention is therefore to provide a cleaning device with which the above-mentioned disadvantages can be avoided and a fast and efficient cleaning of pallet shapes and possibly also of formwork elements in pallet shapes is made possible.

This is achieved by a cleaning device having the features of claim 1.

With the cleaning device according to the invention, a surface of a pallet mold to be cleaned can be cleaned for the production of precast concrete components. In addition, the formwork or formwork elements can be cleaned with the cleaning device. For this purpose, it may be provided to fold the formwork elements in a plane parallel to the surface to be cleaned of the pallet form.

At least one scraping element serves to scrape off soiling articles from the surface of the pallet mold to be cleaned. One or more, preferably parallel, scraping elements may be provided. The scraper elements can also be lowered to the surface to be cleaned by means of a pivoting movement and / or a vertical movement on the surface to be cleaned and lifted away from it. The scraping takes place by means of a relative movement of the pallet mold and the cleaning device, in particular of the scraping element of the cleaning device.

A rotating in the operating state brush, serves to further clean the surface of dirt, the cleaning surface of the brush according to the circumstances, i. depending on the surface to be cleaned and the objects of contamination, may be selected and, for example, has bristles.

According to the invention, a feeding device is provided between the scraping element and the brush, from which a pourable and absorbent good can be fed to the surface to be cleaned. The pourable and absorbent good are, for example, wood shavings or special plastic granules. It may be provided in each cleaning process optionally, depending on the size of the surface to be cleaned to use a certain amount of pourable and absorbent Good. The pourable and absorbent material absorbs the excess oil on the surface to be cleaned. By the rotating brush, the absorbent and pourable material is triturated on the surface to be cleaned and thus dissolves stubborn dirt.

Further advantageous embodiments of the invention are defined in the dependent claims.

In a second embodiment of the invention, the brush is formed, for example, as a disc brush. Such a brush has a cleaning surface, which is provided with a suitable cleaning agent such as bristles or a felt layer and has the advantage that during rotation, a high pressure on the surface to be cleaned can be exercised, whereby a particularly good cleaning can be realized. In addition, such brushes have the advantage that a large area of the surface to be cleaned is cleaned at the same time. This is especially true for circular cleaning surfaces. In operation, this brush generally rotates about a vertical axis, so the brush is also called a vertical brush.

In one embodiment of the invention, the supply device has a distributor, with which the pourable and absorbent material can be distributed on the surface to be cleaned at least over a certain range, so as uniform as possible cleaning a majority of the surface to be cleaned by means of the pouring and absorbent material is possible. The distributor can be realized by a special geometric design of the feeder or by other mechanical aids, such as a movable storage of the feeder. But it can also be provided that the distribution of the pourable and absorbent Guts by pouring the Guts from the feeder to the surface to be cleaned automatically.

In a particularly preferred embodiment of the invention, the cleaning device has a first brush and a second brush, wherein the first brush is rotatable about an axis arranged substantially perpendicular to the surface to be cleaned and wherein the second brush around a substantially parallel to be cleaned Surface arranged axis is rotatable brush. Thereby, the advantages of both brush types above can be combined. In particular, it is possible to arrange differently coarse cleaning agents on the first and the second brush, so that a coarse and a fine cleaning are possible.

In a particularly preferred embodiment of the invention, the first brush, which is rotatable in the operating state about a substantially perpendicular to the surface to be cleaned, between the second brush, which is rotatable about an axis arranged substantially parallel to the surface to be cleaned axis, and the feeding device arranged. In this case, the first brush has a cleaning surface, with which the surface to be cleaned can be treated. The brush rotating in the operating state about an axis arranged essentially perpendicular to the surface to be cleaned can, for example, have a circular rotating metal disk. That side of the metal disk which faces the surface to be cleaned may be specially designed as a cleaning surface. The cleaning surface may be provided with optionally fine bristles or a polishing agent.

From the rotating cleaning surface, the pourable and absorbent material is pressed onto the surface to be cleaned and removed by the rotation of the first brush soiling on the surface to be cleaned. A circular cleaning surface has the particular advantage that the largest possible area of the surface to be cleaned can be cleaned at the same time, while the brush rotating about an axis arranged substantially parallel to the surface to be cleaned essentially has only one line-shaped support.

In principle, it can also be provided that instead of the brush arranged to rotate about an axis perpendicular to the surface to be cleaned, at least one brush which can be moved back and forth along the surface to be cleaned is provided, wherein the trituration of the pourable and absorbent material is to be cleaned Surface is realized instead of a rotational movement of the brush by a small-scale back and forth movement.

Both the rotational movement and the reciprocating motion are made by a known drive unit with a motor. In addition, it can be provided that the brush is movable relative to the surface to be cleaned, so that with the brush or brush (s) as large a portion of the surface to be cleaned can be cleaned.

Depending on the design of the cleaning surface serving in the operating state about a substantially perpendicular to the surface to be cleaned axis rotating brush serves as a fine cleaning and can be used as a polishing, wherein in one embodiment of the invention, the Reinlgungsoberfläche is formed as a felt layer with which the surface to be cleaned is treatable. The felt layer can be connected to the brush in a simple manner, so that a replacement of the felt layer is possible without problems.

In a further embodiment of the invention, in the operating state about an axis arranged substantially perpendicular to the surface to be cleaned axis rotating brush and additionally or alternatively, the at least one scraper element by means of a pivoting movement and / or a vertical movement on the surface to be cleaned can be arranged. An opposite movement causes a lifting of the brush or the scraping element from the surface.

If the pourable and absorbent material is in the region of the brush (s), they can be lowered onto the surface to be cleaned and rubbing on the pourable and absorbent material by pressing and rotating or small-scale reciprocating movements, thereby enabling fine cleaning ,

In a further embodiment of the invention, a dirt container is provided which can be arranged in the region of the brush which rotates about an axis arranged substantially parallel to the surface to be cleaned and can be picked up by the contaminants which are removed from the surface by the brush, for example due to their rotation , In addition, from this brush and the remaining on the surface to be cleaned bulk and absorbent material, such as the wood chips removed and can also be transported in the dirt container. The dirt container can empty automatically after each cleaning cycle.

In a further embodiment of the invention, the cleaning device has at least one brush, which rotates in the operating state about an axis arranged substantially perpendicular to the surface to be cleaned axis, wherein the brush may be formed as a Tollerbürste and having the above advantages. The removal of the remaining on the surface pourable and Gutsgut together with the pollution objects can be done instead of means of the axis arranged to be cleaned parallel to a surface rotating brush with a suction device, which the pollution objects and the pourable and absorbent good of the now cleaned Siphoned surface and transferred to a dirt container. The brush is arranged in this case between the scraper and the suction device. However, such a suction device can also be provided in addition to the brush arranged around an axis arranged substantially parallel to the surface to be cleaned.

The cleaning device may further comprise a pre-brush, which is used on the surface to be cleaned in front of the scraper element and coarser objects of contamination to thereby protect the scraper element.

The invention further relates to a pallet circulation system for the production of prefabricated concrete components, in which the preparation of precast concrete components takes place on pallet forms, said pallet circulating system having a cleaning station with a cleaning device as described above. A pallet circulation system in which precast concrete components are produced as pallet forms in a production line is disclosed, for example, in the Austrian patent application AT 506 748 A1 described. In addition to a cleaning station include a formwork station, a concreting, a Endschalstation and a movement station and a curing and / or drying chamber and a Abhebestation part of the pallet circulation system.

Preferably, it is provided that the cleaning station is automated, especially since several of the remaining stations are automated executable, whereby the efficiency of the production of precast concrete components is further increased.

The invention further relates to a method for cleaning a pallet mold for the production of prefabricated concrete components with a cleaning device as described above. In this case, there is a relative movement between the cleaning device and the surface to be cleaned, so that the surface to be cleaned is first treated by the scraping element by scraping coarser dirt particles. Subsequently, by the feeding device which rotates between the scraper element and the second brush which rotates about an axis arranged substantially parallel to the surface to be cleaned, the pourable and absorbent material is supplied to the surface to be cleaned and optionally with the distributor device on the distributed to be cleaned surface. However, it can also be provided that the distribution is effected automatically by the feeding, for example by a bulk process. By moving the arranged on the surface to be cleaned arranged pourable and absorbent Guts by means of the brush, the cleaning of the surface to be cleaned. Finally, the accumulated objects of pollution and remaining on the surface remnants of the pourable and absorbent Guts example, removed with a suction device, so that the surface to be cleaned is now cleaned and is available in a clean and dry state without annoying traces of oil for another manufacturing cycle.

In a particularly preferred embodiment, the cleaning comprises two partial steps, namely a first cleaning with the first brush, which is arranged between the second brush and the supply device, wherein by the rotation of the first brush a movement or trituration of the arranged on the surface to be cleaned pourable and absorbent Guts takes place. By means of the second brush rotating in the operating state around an axis arranged substantially parallel to the surface to be cleaned, a second cleaning and optionally removal of the accumulated objects of soiling and the residues of the pourable and absorbent material remaining on the surface takes place.

Fig. 1a und 1b

eine perspektivische Ansicht einer Reinigungsstation einer Palettenumlaufanlage sowie eine Detallansicht dazu,

Fig. 2

eine Querschnittsdarstellung einer erfindungsgemäßen Reinigungsvorrichtung und

Fig. 3a und 3b

eine Seitenansicht und eine perspektivische Ansicht einer Zuführvorrichtung.

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the drawings. It shows:

Fig. 1a and 1b

a perspective view of a cleaning station a pallet circulation system and a detailed view of it,

Fig. 2

a cross-sectional view of a cleaning device according to the invention and

Fig. 3a and 3b

a side view and a perspective view of a feeder.

1a shows a perspective view of a cleaning station 13 of a pallet circulation system, wherein in the cleaning station 13, a cleaning device 1 is arranged, with which the surface to be cleaned 3 of the pallet molds 2 is cleaned. For this, the individual pallet molds 2, 2 ', 2 "are moved after the demoulding and lifting of hardened precast concrete components along the arrow direction A by the cleaning station 13 by means of a transport device 16. The surface 3 is cleaned after passing through the cleaning station 13, while the Surface 3 is contaminated before the passage with contaminants 11, in particular an oil film due to the production of precast concrete parts., In particular, the pallet 2 'an already completely cleaned surface 3', while the surface to be cleaned 3 "the pallet form 2" is still completely contaminated ,

Fig. 1b shows the cleaning station 13 in an enlarged view. When passing the pallet form 2 in the direction of arrow A coarser objects 11 are first removed with a pre-brush 12. As a further consequence, a scraping element 4 serves to scrape off further objects of contamination 11. Both the brush 12 and the scraping element 4 can be lifted off the surface 3 to be cleaned by means of a lever mechanism 15 known per se. At the top of the cleaning device 1, a hopper 14 is arranged, in which the pourable and absorbent material can be filled.

Fig. 2 shows in a cross-sectional view of the cleaning device 1 with the lever mechanism 15 liftable from the surface to be cleaned 3 Vorbürste 12 and scraping 4, which can be lifted by means of a separate lever mechanism 32 of the surface to be cleaned 3. A provided with rollers transport device 16 is used for further transport of the pallet 2 in the direction A. The feeder 6 has below the hopper 14 a reservoir 17 for the pour and absorbent Good, which opens into a rotary valve 18, which pours the good on the surface 3 to be cleaned. Subsequently, a first brush 9 is arranged, which is provided with a rotating circular cleaning surface 20. The rotation is made possible by a drive 19, wherein the drive 19 and the cleaning surface 20 connected to the drive 19 can be pivoted away from the surface 3 to be cleaned by means of a further lever mechanism 21.

For cleaning, the cleaning surface 20 is pressed onto the surface to be cleaned 3 and rubbed by the rotation of the sucking and pourable Good, which on the one hand absorbed the oil film and on the other hand finer dirt objects 11 are removed. The cleaning surface 20 is formed for example by a felt layer, which is arranged on a plate consisting of a metal.

As a consequence, a second brush 5 rotating about an axis 22 to be cleaned parallel to the axis 22 serves for further cleaning, as a result of the rotation objects 11 and the material remaining on the pallet mold 2 are conveyed into the collecting container serving as a dirt container 10. The rotation of the second brush 5 is also carried out by a known drive.

Fig. 3a shows the feeder 6 with the reservoir 17 and the hopper 14 in a side view. A guard 23 serves to keep unsuitable bodies from being removed from the feeder 6 for cleaning. The rotary valve 18 has a cellular wheel 24, which serves to supply the material into the outlet channel 25 and subsequently to the surface 3 to be cleaned. The lower part 26 is fixed by means of a lock 27 on the reservoir 17, wherein a pivoting of the lower part 26 about an axis of rotation 31 in unlocked state is possible. Between reservoir 17 and lower part 26, a seal 28 is arranged. By means of a feed channel 29 and a tear-off edge 30, the material is guided to the cell wheel 24.

The defined spoiler edge 30, in conjunction with the circumferential recesses 34 on the outside of the cellular wheel 24 ensures that in the medium and long-term operation no blockages or jamming between the reservoir 17 and the rotary valve 18 can form.

Fig. 3b shows the feeding device 6 in a perspective view. A motor 33 serves to drive the rotary valve 18, in particular the cellular wheel 24.

Claims (13)

1. A cleaning apparatus (1) for a pallet mould (2) for the production of precast concrete components (8) including at least one scraping element (4) with which contamination items (11) can be scraped off the surface (3) to be cleaned of the pallet mould (2), and at least one brush (5, 9), characterised in that provided between the scraping element (4) and the at least one brush (5, 9) is a feed device (6) for feeding a free-flowing and absorbent material on to the surface (3) to be cleaned, and one of the at least one brush (9) is rotatable about an axis (22) arranged substantially perpendicularly to the surface (3) to be cleaned and has a cleaning surface, wherein the cleaning surface (20) can be pressed on to the surface (3) to be cleaned, which is provided with the free-flowing and absorbent material.
2. A cleaning apparatus according to claim 1 characterised in that the feed device (6) has a distributing device for distributing the free-flowing and absorbent material on the surface (3) to be cleaned.
3. A cleaning apparatus according to claim 1 or claim 2 characterised in that there are provided a first brush (9) and a second brush (5), wherein the second brush (5) is rotatable about an axis (22) arranged substantially parallel to the surface (3) to be cleaned and wherein the first brush (9) is the brush which is rotatable about an axis arranged substantially perpendicularly to the surface (3) to be cleaned.
4. A cleaning apparatus according to claim 3 characterised in that the first brush (9) is arranged between the second brush (5) and the feed device (6).
5. A cleaning apparatus according to one of claims 1 to 4 characterised in that the brush (9) which is rotatable about an axis arranged substantially perpendicularly to the surface (3) to be cleaned is in the form of a disk brush.
6. A cleaning apparatus according to one of claims 1 to 5 characterised in that the brush (9) which is rotatable about an axis arranged substantially perpendicularly to the surface (3) to be cleaned has a felt layer with which the surface (3) to be cleaned can be treated.
7. A cleaning apparatus according to one of claims 1 to 6 characterised in that the scraping element (4) and/or the brush (9) which is rotatable about an axis arranged substantially perpendicularly to the surface (3) to be cleaned can be arranged by means of a pivotal movement and/or a vertical movement on the surface (3) to be cleaned for the cleaning operation.
8. A cleaning apparatus according to one of claims 1 to 7 characterised in that there is provided a dirt container (10) by which contaminating items (11) removed from the surface (3) to be cleaned by means of the brush (5, 9) can be received.
9. A cleaning apparatus according to one of claims 1 to 8 characterised in that there is provided a suction removal apparatus, by means of which contaminating items (11) can be sucked off the surface (3) to be cleaned.
10. A cleaning apparatus according to one of claims 1 to 9 characterised in that there is provided a pre-brush (12) with which the surface (3) to be cleaned can be roughly pre-cleaned up.
11. A pallet circulation installation for the production of precast concrete components in which production of the precast concrete components (8) is effected on pallet moulds (2) wherein the pallet circulation installation has a cleaning station having a cleaning apparatus (1) according to one of claims 1 to 10.
12. A method of cleaning a pallet mould for the production of precast concrete components with a cleaning apparatus (1) according to one of claims 1 to 10 characterised by the following time sequence of steps:

    a) scraping off contaminating items (11) from the surface (3) to be cleaned with the scraping element (4),

    b) feeding a free-flowing and absorbent material with the feed device (6) on to the surface (3) to be cleaned,

    c) cleaning by a movement of the free-flowing and absorbent material arranged on the surface (3) to be cleaned by means of the brush (5, 9), wherein the cleaning operation includes a movement of the free-flowing and absorbent material disposed on the surface (3) by means of the at least one brush (5, 9), and

    d) removing the collected contaminating items (11) from the surface (3) to be cleaned.
13. A method according to claim 12 with a cleaning apparatus (1) according to one of claims 1 to 10 characterised in that the cleaning operation includes a further cleaning operation by the second brush (5) which rotates about an axis arranged substantially parallel to the surface (3) to be cleaned.

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