EP3718719B1 - Plate production facility with height-adjustable dosing device - Google Patents

Description

The present invention relates to a plate production line. Such plate production systems are known from the prior art. Systems of this type usually have a number of working units which, in particular, successively carry out working steps for the production of panels. In this case, devices can be provided which press the corresponding plates, devices which eject the pressed plates and also metering devices which supply the material to be pressed to a pressing mold.

Dosing devices of this type are often used in plate production systems, such as hermetic presses. Slab production plants are generally used to produce stones, concrete slabs, in particular terrazzo and cast stone slabs, paving stones, for example in hermetic quality, terrace and pavement slabs, as well as single-layer and two-layer slabs, also with combined filters and hermetic pressing methods, in a continuous production process.

It is known from the prior art that such hermetic press systems are arranged on a rotary table, as will be explained in more detail below. A dosing device serves to dose the concrete slab material to be pressed in the correct portioning. Dosing devices used in the prior art are, for example, dosing disc dosing devices and tube dosing devices.

By dosing the right amount of material in advance, it is possible to then feed the amount of material to a press mold, so that panels of the same size and shape can always be produced in the subsequent pressing process. In this case, such metering devices are partially arranged above a compression mold to which the metered material is fed. It is known that the dosing device is suspended from a carrier, for example from a vertically extending arm, and is attached to an upper area. Because of the production processes, it is advantageous if an up and down movement of the dosing device is enabled in relation to a press mold lying underneath. It can also be advantageous to be able to pivot such a dosing device about an axis, for example to be able to rotate about a vertically extending column, for example by the column serving as the axis of rotation.

In the prior art, such height adjustments and rotary movements of a dosing device are carried out by hand or by means of constructions that are susceptible to dirt and are therefore prone to malfunction. For example in the document DE 10 2005 013 249 A1 which discloses a plate production plant according to the preamble of claim 1, a press is described with a drive for moving the column in the vertical direction and for rotating. Although the compression mold is protected by a protective border against contamination from material falling from the dosator, the column area is not explicitly protected.

The present invention is therefore based on the object of advantageously enabling an automated sequence of movements of the dosing device, both with regard to its height adjustment and with regard to a rotary movement, the heavy weight of such a dosing device within the plate production system being taken into account in particular. In this way, an almost trouble-free function can be made available. Furthermore, this sequence of movements should be able to be carried out with as little disruption as possible.

According to the invention, these objects are achieved by a plate production system according to claim 1 . Advantageous embodiments and developments are the subject of the dependent claims.

A panel production system according to the invention for producing panels has a press mold to which a material to be pressed can be fed and a metering device which meteredly feeds the material to be pressed to the press mold, the metering device being arranged above this press mold and the metering device having a carrier is arranged and wherein this carrier allows a movement of the dosing device in a height direction of the carrier and/or a pivoting of the dosing device in a predetermined pivoting direction.

According to the invention, the support device has a lifting column that is movable in the vertical direction, and a drive device that is used to move the lifting column in the vertical direction, and at least one sealing device for sealing components of the support device from the environment.

It is therefore proposed to provide a column device for suspending a dosing device, in particular in an upper area, which is advantageously connected to the foundation of the plate production plant and is connected in particular on the underside and which particularly preferably has an encapsulated lifting column, as described below particularly preferably both rotary drives and a lifting or up and down movement drive are provided.

In a preferred embodiment, the panel production system has a transport carrier, such as a turntable, which is preferably guided past the dosing device and also other work stations so that they can carry out different production steps on the product.

The plate production system is preferably a rotary system. The plate production system is particularly preferably a clocked system. In addition to the dosing device described here, the panel production plant preferably also has a pressing device for pressing panels and/or a pre-pressing device or pre-pressing station.

It is therefore proposed that this carrier device is at least partially sealed off from the environment, sealing being understood to mean that contamination of the carrier device can be prevented or reduced in any case.

The lifting column is particularly preferably arranged on a floor support. The drive device for moving the lifting column is particularly preferably an electric motor device, although pneumatic drives or hydraulic drives would also be conceivable.

In a preferred embodiment, the lifting column extends in a vertical direction.

In a further preferred embodiment, the system has a pressing device which presses the material to be processed and in particular presses it into the compression mold.

The pressing device is particularly preferably a hermetic press.

The dosing device can be, for example, a disk dosing device or a tube dosing device. The dosing device can have a multiplicity of disks, which particularly preferably rest against one another in a working operation and which particularly preferably have through-openings through which the material to be pressed can be passed.

In a particularly preferred embodiment, the dosing device has an introduction device and in particular an introduction funnel, via which the material can be fed.

In a particularly preferred embodiment, the lifting column is non-rotatable.

In a further preferred embodiment, the sealing device has a first sealing device for sealing off sections of the lifting column from the environment. In this way, areas of the lifting column in particular can be secured against contamination.

In a further preferred embodiment, the first drive device has a lifting spindle for carrying out the lifting movement.

This lifting spindle can interact with a nut, for example, in order to bring about the vertical movement of the lifting column.

In a particularly preferred embodiment, this lifting spindle is arranged at least in sections within the lifting column. In this way, the lifting spindle can be protected from contamination.

This lifting spindle can particularly preferably be arranged completely within the lifting column. In a preferred embodiment, the lifting column is not only encapsulated in its exposed areas from the environment, for example by means of a housing, but also in a first and in particular upper area, which has a further drive, for example a rotary drive motor, and also a lower area in which said lifting spindle and/or the drive device is arranged to carry out the lifting movement. These are preferably each arranged in the interior areas, ie in particular an area that is shielded from an outside area.

A preferably vertically extending column device can be provided, which is used to attach a dosing device, for example in the area of connection elements, and which also preferably has a lifting column that can be moved up and down, which is protected against dirt to avoid malfunctions due to the up and down movement is.

As mentioned above, the lifting column or column device can have a foot which is fixed relative to, for example, a table or another support of a panel production system or a floor.

The drive device mentioned above, which is advantageously arranged inside the foot and particularly preferably extending in the horizontal direction, is used to drive a lifting spindle. As mentioned, however, the lifting spindle is preferably arranged inside the lifting column and thus remains free of contamination.

This also applies to the preferably internal drive motor mentioned above.

Said lifting spindle can have a spindle in a predetermined area, for example in its upper area, which is used to move the lifting column device up and down by rotating the spindle. For this purpose, the lifting column can have a thread which engages in the spindle.

In this way, by rotating the spindle, which rotation is brought about by a drive motor, the lifting column can be moved up or down relative to the spindle by means of the spindle or screw effect.

In a further preferred embodiment, the sealing device has at least one sealing device for sealing off the first drive device from the environment. As mentioned above, the drive device can be an electric motor, which is arranged inside a housing and is also encapsulated from the environment by this housing.

According to the invention, the carrier device has a second drive device, which causes a pivoting movement of the dosing device with respect to a predetermined pivot axis. This pivot axis can in particular be a vertical axis.

According to the invention, this second drive device is spaced apart from the first drive device. As mentioned above, the first drive device can be arranged in a foot area of the carrier device and the second drive device in an upper area. The lifting column is preferably arranged between the first drive device and the second drive device.

In a further preferred embodiment, the second drive device is arranged in a stationary manner. Furthermore, the device can have a rotary bearing in order to be able to rotate components of the carrier device with respect to other components.

In a further preferred embodiment, a further sealing device is provided, which seals off the second drive device from the environment. In this way, the second drive device, for example a drive motor, but also corresponding bearings can be sealed off from the environment so that contamination is prevented.

According to the invention, the carrier device has a fastening device for detachably fastening the dosing device to the carrier device. For example, the carrier device can be hung in a region of the fastening device. For this purpose, the dosing device can, for example, have hook elements have, which can be hung on the corresponding counterparts on the carrier device.

According to the invention, the second drive device is arranged above this fastening device.

In a further advantageous embodiment, the sealing device has at least one bellows. Such a bellows allows a seal and at the same time a retraction and extension of a lifting cylinder while maintaining the sealing function.

In a further preferred embodiment, the sealing device has a first column casing which surrounds the lifting column at least in sections.

According to the invention, an anti-rotation device is provided which prevents the lifting column from rotating relative to this column shell. The embodiment of a rotary spindle device mentioned above poses the risk that the lifting column will also rotate. This is prevented by the anti-rotation device mentioned here, for example a safety device. This anti-rotation device can be a permanent connection between the lifting column and an external column casing, which is described above. This column jacket can preferably be arranged inside a column jacket foot by means of sealing elements. Preferably, sealing devices can also be provided above the mentioned column shell, which can particularly preferably be designed circular and thus enable a seal against the environment.

In order to guarantee a lifting column that moves up and down, which is advantageously arranged inside the column casing and is therefore largely protected against dirt, a complementary nut can be provided in the area of the above-mentioned lifting spindle, which is also arranged inside the lifting column. A rotation of the spindle with respect to a vertical axis therefore allows a relative movement of this nut and thus of the lifting column with respect to a spindle. Turning in other direction would in turn cause a downward movement.

If the lifting column preferentially moves up and down, there is a column-free area that changes in length or height during the up and down movement. In order to ensure indirect and sufficient protection of the lifting column from the outside area and thus a trouble-free function of the entire column device, a bellows can be provided in this area, as mentioned above, which extends in its upper area from a column head casing downwards into the upper area of the column casing , In which the sealing elements can preferably also be present, extends.

In this case, this bellows can preferably be moved up and down, so that the exposed, changing lengths or height expansions of the lifting column can be bridged in an encapsulating manner during the up and down movement.

The above-mentioned drive motor that is preferably present in the upper area of the column head casing is also preferably optionally encapsulated against dirt. This drive motor can rotate with respect to an internal rotary unit and thereby cause the entire column head shell (with the metering device arranged thereon) to rotate. For this purpose, the holding device present for accommodating the dosing device is also rotated about the vertical axis. This in turn means that the dosing device, which is arranged on the holding device, is pivoted or rotated about a vertical axis.

In a further preferred embodiment, the sealing device has a second column jacket which surrounds the lifting column and which is spaced apart from the first column jacket. The bellows mentioned above can be provided between these two column shells. In particular, the second column shell is spaced apart from the first column shell in a longitudinal direction of the lifting device and in particular in a vertical direction.

As mentioned above, the second column jacket is particularly preferably rotatable relative to the lifting column.

• Fig. 1 eine Darstellung einer erfindungsgemäßen Anlage zum Herstellen von Platten;
• Fig. 2 eine Darstellung eines Trägers für eine Dosatoreinrichtung.

Further advantages and embodiments result from the accompanying drawings:

• 1 a representation of a system according to the invention for the production of plates;
• 2 a representation of a carrier for a dosing device.

1 shows a plate production system 100 according to the invention. This has a turntable on which a large number of processed processing stations are arranged. In this case, this reference number 1 refers to a dosing device, described in more detail here, which doses the material to be supplied into a compression mold.

Reference number 102 designates a distribution station, which distributes the material filled into a mold, for example a press mold, by the metering device 1 or causes a uniform distribution of this material.

Reference number 103 refers to a free station. This can be occupied to carry out additional, optional work steps, for example to produce special models of plates.

The reference numeral 104 denotes a rear concrete - filling station. This can, for example, add another layer of concrete or material. In this way, multilayer boards can be produced. This station can also be omitted when producing single-layer panels.

The reference number 105 shows a pre-compression device. Using this station, the material filled into the mold is pre-compacted (before the actual pressing process).

Reference number 106 shows the pressing station in which the panels to be produced are pressed.

Reference number 107 designates an output station or removal station in which the manufactured panels are removed or pressed out of their mold.

Numeral 52 designates a rotatable transport carrier. Using this transport carrier, the material is transported from one station to the next station in cycle operation. The individual stations 1 and 102 - 107 are opposite to this rotary movement of the Transport carrier arranged stationary.

Reference number 1 designates the dosing device described here.

This dosing device can have a feed device or an introduction device for a material to be pressed, such as a hopper, for example. In addition, the dosing device can have a receiving device, such as in particular a so-called dosing pot, into which the material to be pressed arrives. A large number of dosing disks can be arranged below this dosing pot, with the dosing disks preferably having openings through which the material to be pressed can pass, dosing being achieved by a rotary position of these dosing disks.

2 shows a schematic representation of a carrier device according to the invention for carrying the dosing device (not shown). A holding device 3 is provided on which the dosing device (not shown) can be arranged. The carrier device is designed overall as a lifting column 2 which can be displaced in the vertical V direction. For this purpose, a driven lifting spindle 8 is provided, which cooperates with a nut (not shown) in order to achieve the longitudinal movement or lifting movement of the lifting spindle 2 . Reference number 11 designates an anti-twist device to prevent the lifting spindle from twisting relative to a column support or column jacket 10 .

Reference number 9 designates sealing elements in order to seal off the lifting columns 2 from the environment.

Numeral 8 denotes the jackscrew itself. Numeral 6 denotes a drive motor used to rotate the jackscrew. The reference number 4 designates a foot, within which the drive motor 6 is integrated.

The reference numeral 27 denotes a gear for the lifting spindle.

The reference number 12 designates further sealing elements for sealing the lifting spindle 2. The reference number 13 designates a bellows, which seals further areas of the lifting spindle and at the same time also provides a seal independent of a height position, or allows the displacement position of the lifting spindle relative to the column jacket.

Reference number 14 designates a second column shell, which is arranged in an upper area of the lifting spindle and in turn seals it. The reference number 15 designates a rotary unit which enables the holding device 3 to be rotated. A counterweight can be arranged opposite the mounting point for the dosing device (not shown).

The reference numeral 16 designates a further drive motor, which enables the fastening device 3 to be rotated, as indicated by the arrow P.

Reference number 17 designates an axis of rotation in the upper area, in particular an upper third, of the device. This axis of rotation is used to implement the rotary movement, for example by means of gears not shown, of the column head jacket 14 and the holding device 3 by activating the drive motor and to carry out or fix the movement as such.

The applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided they are new compared to the prior art, either individually or in combination. It is also pointed out that the individual figures also describe features which can be advantageous in and of themselves. The person skilled in the art recognizes immediately that a specific feature described in a figure can also be advantageous without adopting further features from this figure. Furthermore, the person skilled in the art recognizes that advantages can also result from a combination of several features shown in individual figures or in different figures.

Reference List

1

dosing device

2

lifting column

3

Holding device, fastening device

8th

lifting spindle

9

sealing elements

10

pillar mantle

11

anti-rotation device

12

sealing elements

13

bellows

14

second column shell

15

turning unit

16

another drive motor

17

axis of rotation

27

transmission

52

rotatable carrier

100

plate production plant

102

distribution station

103

free station

104

Rear concrete - filling station

105

precompression device

106

pressing station

107

dispensing station

V

Direction

P

Arrow

Claims (9)

1. Slab production plant (100) for producing slabs with a press mould to which a material to be pressed can be fed and with a dosing device (1) by which the material to be pressed is fed in a dosed manner to the press mould, wherein the dosing device (1) is arranged above this press mould, and wherein the dosing device (1) is arranged on a support, and wherein this support enables a movement of the dosing device in a vertical direction (h) and a pivoting of the dosing device in a predetermined pivoting direction, wherein the support device has a lifting column (2) which is movable in the vertical direction, as well as a first drive device (6) which serves for movement of the lifting column (2) in the vertical direction and at least one sealing apparatus (13, 9, 12) for sealing components of the support device with respect to an environment, characterised in that the sealing apparatus has a first column casing (10) which at least partially surrounds the lifting column, wherein an anti-twisting device (11) is provided which prevents twisting of the lifting column (2) with respect to at least one column casing and/or the support device has a second drive device (15, 16) which enables a pivoting movement of the dosing device (1), wherein the support device has a fastening device for releasably fastening the dosing device to the support device, wherein the second drive device is arranged above the fastening device.
2. Slab production plant (100) according to claim 1, characterised in that the sealing apparatus has a first sealing device (13) for sealing portions of the lifting column (2) with respect to the environment.
3. Slab production plant (100) according to at least one of the preceding claims, characterised in that the first drive device has a lifting spindle (7) for carrying out the lifting movement.
4. Slab production plant (100) according to the preceding claim, characterised in that the lifting spindle is arranged at least partially inside the lifting column (2).
5. Slab production plant (100) according to at least one of the preceding claims, characterised in that the sealing apparatus has at least one sealing device for sealing the first drive device with respect to the environment.
6. Slab production plant (100) according to at least one preceding claim,
   characterised in that a further sealing device is provided which seals the second drive device with respect to the environment.
7. Slab production plant (100) according to at least one of the preceding claims, characterised in that the sealing apparatus has at least one bellows.
8. Slab production plant (100) according to at least one of the preceding claims, characterised in that the sealing apparatus has a second column casing (14) which surrounds the lifting column (2) and is spaced apart from the first column casing.
9. Slab production plant (100) according to the preceding claim, characterised in that the second column casing (14) is rotatable with respect to the lifting column (2).

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