EP3738735B1 - Doser with openable doser sockets for plate production systems - Google Patents

Description

The invention relates to a metering device, in particular a metering device with openable metering bushes for plate production systems.

Slab production plants, in particular for terrazzo cast stone slabs, paving stones in hermetic quality, patios and paving slabs, single-layer and two-layer slabs with a combined filter/hermetic pressing process are often designed in such a way that they have a hermetic press in a circular representation, which, among other things, has a dosing device or a dosing device at one position indicates. For example, this is in figure 1 reproduced under number 2. The numbers 1 and 3 - 7 indicate further stations of the layout. Such dosing devices or dosing devices have openings in the bottom area of a dosing pot, in which the material for the production of boards is present, to which filling sockets or dosing sockets, which usually extend vertically, are connected. All dosing bushes are therefore arranged together in the bottom area of the dosing pot, which means that each dosing bush would receive the same amount of material from the dosing pot for subsequent feeding to the plate mold, as is shown in DE 29 01 025 A1 is shown. However, it is often desirable for the dosator bushings to be able to accommodate different volumes of material for loading underlying panel molds with different volume requirements. For this it is necessary that not all dosator sockets are equipped with the same amount of material. The pamphlet EP 1 669 179 A2 discloses this, according to the preamble of claim 1, a dosing device for arrangement on a slab production plant for the production of stone and concrete slabs.

Accordingly, it is an object of the invention to provide a dosing device with a plurality of dosing devices for a plate production system, in which the individual dosing devices can be opened or closed individually, depending on how many dosing sockets have to be used for a new plate production. It is also the object of the invention to be able to fill different material volume quantities with such dosing bushes.

According to the invention, this object is achieved by the subject matter of the independent patent claims. Advantageous embodiments and developments are the subject of the dependent claims.

The core idea of the invention is that in a dosing device or a dosator for arrangement on a slab production plant for the production of stone and concrete slabs, a plurality of displacement devices for the dosing bushes are arranged. The dosing device extends in the vertical direction and in a longitudinal direction and is equipped with a dosing pot for receiving materials to be dosed, at least one upper dosing bottom disk with a plurality of outlet openings for discharging the material in a plurality of dosing bushes, each with a material inlet opening and a material outlet opening for dosing each equipped with an outlet quantity of the material.

The dosator sockets are arranged between the upper dosator base plate and a lower dosator base plate, which is arranged in the vertical direction below the upper dosator base plate, with each dosator socket being able to be filled with an individually proportioned dosing quantity using displacement devices. For this purpose, a displacement device is assigned to each dosator socket, which is preferably arranged between the upper dosator base disk and the lower dosator base disk.

If these displacement devices are individually displaced by means of a control device, which can certainly be present jointly for all displacement devices, the portioning of the material to be introduced into the dosing sockets can be determined precisely and thus a different or individual amount of material can be introduced into each of these dosing sockets. This advantageously makes it possible not only for different plates to be produced at the same time or filled according to their shapes, but also for individual dosing sockets not to be activated in the first place so that the free spaces underneath, which do not have a plate shape, are not loaded with material. This means that the individual plate shapes can also be placed on a corresponding plate or a disk can be arranged individually and the dosing sockets filled accordingly.

Automated detection of such a plate shape and its presence below a dosing bushing is even advantageous, so that the dosing bush can be filled or not filled automatically and when it is filled, the corresponding amount is filled. This can be achieved by optical scanning, sensor technology, etc.

The dosing bushes are tubular--mostly running in the vertical direction--and these dosing bushes can be closed or opened individually by means of individual sliding elements assigned to them. This makes it possible to close or open individual dosing sockets at a specific desired time, as required. This enables the use of a specific selection of dosing sockets or a specific number of dosing sockets, which does not have to correspond to the total number of dosing sockets arranged in the bottom area of the dosing pot.

It also makes it possible for the dosator sockets to be fitted with a different amount of material, depending on the length of the opening time, by controlling the slide elements over time. This is achieved in that the slide elements are each arranged between the first dosator bottom disk in the bottom area of the dosator pot and an inlet opening of the dosator socket, and by means of a linear drive element, such as a reciprocating piston, between an opening in the bottom area of the dosator pot, i.e. in the dosator bottom disk, and the inlet area of the dosator socket is pushed in the upper area. Thus, the dosator socket is closed at this moment.

For this purpose, the slide elements can have advantageous openings through which the material coming from the dosing pot can enter the dosing bush from above. As soon as the opening is pushed out of the area of the dosing bush in which the slide element is moved, the supply of material from the dosing pot is terminated and the dosing bush has the desired filling quantity of material.

Each slide element is part of one of the slide devices, with each slide element slidingly closing the dosing bush assigned to it at least partially or even completely.

The majority of the slide elements can be displaced parallel to one another and to the dosator bottom disks in the longitudinal direction.

Thus, the slide elements are preferably displaceable at a right angle to the course of the dosator bushings and can thus be moved into or out of the dosing bushes coming from the side. In this case, moving out also means that the sliding element is only moved up to a specific position in which it has an opening at the point where the dosing bush has a material passage in its interior area.

Each slide element can preferably be controlled and displaced individually by means of a common control device, it being possible for the control device to be controlled either automatically or manually.

The already mentioned opening of a slide element can have different diameters of a circle or different shapes, so that the size and shape of the opening can also be used to influence and take place a material feed in the desired quantity and speed.

The slide elements are advantageously designed in the form of plates, it having been found to be particularly advantageous for the slide elements to be additionally designed in the form of strips. As a result, the arrangement of the individual slide elements parallel to one another and thus also an allocation of the individual slide elements to the individual dosing bushes is possible in a space-saving manner. For this purpose, the slide elements preferably have an underside attachment to the underside of the upper dosator bottom disk. This can be done, for example, by means of rails that are attached to the underside of the dosator base plate.

According to a preferred embodiment, each slide element is connected to at least one linear drive, such as a reciprocating piston, with the slide element and the linear drive element assigned to it being arranged parallel to one another and at a distance from one another in the height direction or dosator bushing direction. However, both elements, ie the slide element and the linear drive element assigned to it, run parallel to one another on two different levels.

Thus, according to one embodiment of the invention, a first end of each linear drive element can be fastened to the underside of the respectively associated slide element by means of a first articulated connection.

A second element of each linear drive element can be fastened to the underside of the upper dosator base disk by means of a second articulated connection.

In this way, due to the use of articulated connections, slight displacements and distortions in the overall construction between the linear drive, which can be a cylinder and a reciprocating piston, and the slide element, can be compensated for. This means that no stresses can occur within the overall construction of the dosing device.

It is also advantageous with the object of the present invention that the dosator sockets can be equipped with a different amount of material, depending on the length of the opening time, by controlling the slide elements over time.

Fig. 1

in einer Draufsicht eine schematische Darstellung einer Plattenproduktionsanlage;

Fig. 2

in einer perspektivischen Darstellung eine erfindungsgemäße Dosiervorrichtung;

Fig. 3

in einer Querschnittsdarstellung die erfindungsgemäße Dosiervorrichtung.

Further advantageous embodiments result from the figures in the following description of the figures. Show it:

1

in a plan view a schematic representation of a plate production plant;

2

in a perspective view, a dosing device according to the invention;

3

in a cross-sectional view, the dosing device according to the invention.

In 2 a dosing device according to the invention or a dosing device according to the invention is shown in a perspective view. The molds arranged underneath and to be fitted with material are not shown.

The dosing device 11 or the dosing device 11 has a dosing pot 12 in which the material for equipping molds is present. A dosator bottom disk 13 is connected to the dosator pot 12 in the bottom area and has individual openings which are assigned to upper inputs of dosator sockets 15-19, which are mostly tubular and can certainly also be telescopic. In the figure 2 embodiment shown has six dosator sockets. However, the dosator 11 can also have a larger or smaller number of dosator sockets.

The dosing device extends in the longitudinal direction according to the double arrow L and in the vertical direction according to the double arrow H.

A second dosator base plate 14 is spaced apart from the first dosator base plate 13 viewed in the vertical direction H and is arranged parallel thereto. This second dosator bottom disk 14 is associated with material outlets 20-25 of the dosator bushings 15-19.

In order to be able to close and open the individual Dosator sockets 15-19 individually, linear drive elements 32, 33, 34, 35, 36, 37 are arranged, which can be designed, for example, in the form of a socket and a reciprocating piston 32a-34a. These reciprocating pistons 32a-34a are arranged with fastening elements at one end, preferably in an articulated manner by means of an articulated connection 41 on an underside of slide elements 26-31, respectively.

Each slide element 26-31 thus has a fastening in the form of a joint connection 41 on which a lifting piston 32a-34a is arranged and which enables the slide element 26-31 to be moved on the underside 13a of the upper dosator base plate 13.

The slider elements 26-31 are attached to the underside 13a of the upper dosator bottom disk in such a way that they can be displaced in the longitudinal direction with respect to the L direction. For this purpose, individual rail elements such as those shown in 2 can be seen arranged. This representation makes it clear that the individual slide elements 26-31 can be moved parallel to one another. The rail elements for guiding the plate-shaped and preferably strip-like slide elements 26-31 are denoted by the reference numeral 40 in part.

Each of the cylinder pistons 32-37 with associated reciprocating pistons 32a-34a can be controlled separately by means of a control device not shown in detail here, and the individual dosing bushes 15-19 can thus be closed or opened individually. The opening and closing depends on which of these dosing sockets is currently required for dispensing quantities of material from the material outlets 20-25.

According to one embodiment, the slide elements 26-31 are conceivable in the form of sliding plates and can be driven linearly by means of the cylinder pistons 32-37. As a result, there is an overlapping of openings in the sliding plates 26-31 and openings in the dosator base plate 13 on the underside 13a for filling the dosator sockets. A repeat Moving the sliding plate enables the dosator socket to be completely closed. The dosing bushings 15 - 19 are connected at their upper end to the slide element 26 - 31 arranged above them. At their lower end, the dosator bushings 15 - 19 are each connected to a second slide element, which is guided in further rail elements which are arranged on the upper side of the second dosator bottom disk 14 .

The first end 32b of each reciprocating piston 32-37 is connected by means of the first pivot connection 41 to the underside of a slide element. A second end 32c of each cylinder piston is connected by a second pivot connection 42 to the underside of the upper dosator bottom disc.

In 3 the functioning of the dosator 11 according to the invention is shown again in a cross-sectional view in a detail view. Each slide element 26-31 can move along the longitudinal direction L of the dosator, ie to the left and right when viewed in the image plane.

By moving the slide element 26, a top opening of the dosator socket of the dosator 44a, 44b, 44c, 44d is opened or closed. Consequently, when there is an opening from above, material from the dosing pot 12 can flow into the dosing bush and the slide element can then close this top-side entrance of the dosing bush by sliding.

The dosator bushing 44a-d is composed of various telescoping tube elements 44a, 44b, 44c, 44d that are built into one another or allow it to be pulled apart. This also makes it possible to change the volume of material to be accommodated therein by simply reducing or increasing the internal volume of the dosator bushing by extending and retracting the telescope.

The dosator socket is surrounded on the outside by a spiral spring 43 in order to ensure a distance between the first and second dosator base plate 13,14 and to ensure a tight seal between the sliding plate and the upper and lower dosator base plate 13, 14 by introducing a preload.

The volume of material within the dosator bushing can be controlled by regulating the amount to be filled, for example by timing the slide element. This means that after a certain time X the sliding element is displaced and thus the opening in the dosator base plate 13 and the dosator bushing are closed. As a result, the amount of material can be dosed precisely within the dosator socket. Precise dosing of the amount of material within the dosator bushing is also conceivable by means of two slide elements spaced apart from one another viewed in the height direction, which can also be adjusted in height and of course can also be slid parallel to the dosator bottom disks. This is no longer shown here.

Reference List

11

Doser, dosing device

12

dosing pot

13

first dosator bottom disk

13a

bottom

14

second dosator base plate

15

dosator socket

16

dosator socket

17

dosator socket

18

dosator socket

19

dosator socket

20

material output

21

material output

22

material output

23

material output

24

material output

25

material output

26

slider element

27

slider element

28

slider element

29

slider element

30

slider element

31

slider element

32

Linear drive element, cylinder piston, reciprocating piston

32a

reciprocating

32b

first end

32c

second end

33

Linear drive element, cylinder piston, reciprocating piston

34a

reciprocating

34

Linear drive element, cylinder piston, reciprocating piston

34a

reciprocating

35

Linear drive element, cylinder piston, reciprocating piston

36

Linear drive element, cylinder piston, reciprocating piston

37

Linear drive element, cylinder piston, reciprocating piston

40

rail elements

41

first articulation

42

second articulation

43

spiral spring

44a

Dosator, dosator socket, tube element

44b

Dosator, dosator socket, tube element

44c

Dosator, dosator socket, tube element

44d

Dosator, dosator socket, tube element

H

height direction

L

longitudinal direction

Claims (9)

1. Dosing apparatus (11) for arrangement on a plate production plant for production of stone and concrete plates, wherein the dosing apparatus (11) extends in a vertical direction (H) and comprises a doser pot (12) to accommodate material to be dosed, at least one upper doser base disc (13) having a plurality of discharge openings for discharge of the material into a plurality of doser sleeves (15-19), each of which has a material inlet opening and a material outlet opening (20-25) for dosing a discharge amount of the material in each case,
   wherein the doser sleeves (15-19) are arranged between the upper doser base disc (13) and a lower doser base disc (14), which is arranged in the vertical direction (H) below the upper doser base disc (13), and each doser sleeve (15-19) can be filled with an individually portioned dosage amount by means of displacement devices (32-37; 26-31),
   characterized in that each displacement device (32-37; 26-31) has a slide element (26-31) which, by sliding, partially or completely closes the doser sleeve (15-19) associated with it.
2. Dosing apparatus (11) according to claim 1,
   characterised in that
   the plurality of slide elements (26-31) are displaceable parallel to one another and to the doser base discs (13, 14) in the longitudinal direction (L).
3. Dosing apparatus (11) according to claim 1 or 2,
   characterised in that
   each slide element (26-31) is individually controllable and displaceable by means of a common control device.
4. Dosing apparatus (11) according to any one of the preceding claims 1-3,
   characterised in that
   at least one slide element (26-31) has at least one opening which can be arranged inside the associated doser sleeve (15-19).
5. Dosing apparatus (11) according to anyone of claims 1-4,
   characterised in that
   the slide elements (26-31) have a plate-like design.
6. Dosing apparatus (11) according to anyone of claims 1-5,
   characterised in that
   the slide element (26-31) is arranged displaceably on an underside (13a) of the upper doser base disc (13).
7. Dosing apparatus (11) according to anyone of claims 1-6,
   characterised in that
   each slide element (26-31) is connected to at least one linear drive element (32-37), such as a reciprocating piston (32a-34a), wherein the slide element (26-31) and the linear drive element (32-37) associated with it are arranged parallel to one another and spaced apart from one another in the vertical direction (H) or doser sleeve extension direction.
8. Dosing apparatus (11) according to claim 7,
   characterised in that
   a first end (32b) of each linear drive element (32-37) is fastened by means of a first articulated connection (41) on the underside of the respectively associated slide element (26, 31).
9. Dosing apparatus (11) according to claim 8,
   characterised in that
   a second end (31c) of each linear drive element (32-37) is fastened by means of a second articulated connection (42) on the underside of the upper doser base disc (13).

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