DE102008001371A1 - Casting machine and casting machine modules - Google Patents

Abstract

The invention relates to a casting machine (1) for casting a flowable mass (M), in particular a liquid mass with suspended solid particles. The casting machine according to the invention is equipped with a mass container unit (2) for receiving the flowable mass (M); a nozzle block unit (3) in fluid communication with the mass container unit (2); a pump block unit (4) for generating a pressure gradient on a nozzle (32) of the nozzle block unit (3), wherein the mass container unit (2) at least two separate mass containers (21, 22, 23, 24) and / or the nozzle block unit (3) has at least two separate nozzle blocks (31, 32, 33, 34) and / or the pump block unit (4) has at least two separate pump blocks (41, 42, 43, 44). The mass containers (21, 22, 23, 24) and / or the nozzle blocks (31, 32, 33, 34) and / or the pump blocks (41, 42, 43, 44) can be moved relative to the mass transport direction by the machine (1 ) may be arranged in parallel.

Description

The The invention relates to a casting machine for casting a flowable Mass, in particular a liquid Mass with suspended solid particles.

A contains such casting machine a mass container for receiving the flowable Mass, at least one nozzle in fluid communication with the mass container interior, and a pumping means for Generating a pressure gradient at the nozzle. The mass container serves for receiving and pretreating (eg temperature control) the pourable Dimensions. Lead from its bottom Fluid connections away, which open into a plurality of metering chambers, in each of which a piston is movable. Each of the chambers is with each a nozzle connected.

In In practice, such casting machines contain a nozzle plate with a variety of nozzles that on the nozzle plate are arranged fixed. This nozzle plate is before the actual Casting to a plate-shaped Mold introduced, which also has a plurality of mold cavities or alveoli. The mass is then in the pourable Condition over the respective nozzles poured into a respective mold cavity of the mold, where you can the mass then solidifies.

The nozzle plates as well as other parts of such a casting machine must be cleaned from time to time become. Sometimes you have to also nozzle plates be replaced when changing a product (other pourable mass) or a mold change (other Alevolen size, other Alveoli distance). Such and other modifications to the initially described Casting machine are laborious and time consuming.

Of the Invention is therefore the object of a casting machine of to provide the aforementioned type, which also without great effort and can be rebuilt without much time.

These The object is achieved by means of a casting machine according to one of claims 1 to 39 solved.

casting machine

• – einer Massebehälter-Einheit (2) zur Aufnahme der fliessfähigen Masse (M);
• – einer Düsenblock-Einheit (3) in Fluidverbindung mit der Massebehälter-Einheit (2);
• – einer Pumpenblock-Einheit (4) zum Erzeugen eines Druckgefälles an einer Düse (32) der Düsenblock-Einheit (3), wobei
• – die Massebehälter-Einheit (2) mindestens zwei gesonderte Massebehälter (21, 22, 23, 24) aufweist; und/oder
• – die Düsenblock-Einheit (3) mindestens zwei gesonderte Düsenblöcke (31, 32, 33, 34) aufweist; und/oder
• – die Pumpenblock-Einheit (4) mindestens zwei gesonderte Pumpenblöcke (41, 42, 43, 44) aufweist.

The casting machine according to the invention ( 1 ) it's equipped with

• A mass container unit ( 2 ) for receiving the flowable mass (M);
• A nozzle block unit ( 3 ) in fluid communication with the mass container unit ( 2 );
• A pump block unit ( 4 ) for creating a pressure gradient on a nozzle ( 32 ) of the nozzle block unit ( 3 ), in which
• - the mass container unit ( 2 ) at least two separate mass containers ( 21 . 22 . 23 . 24 ) having; and or
• The nozzle block unit ( 3 ) at least two separate nozzle blocks ( 31 . 32 . 33 . 34 ) having; and or
• - the pump block unit ( 4 ) at least two separate pump blocks ( 41 . 42 . 43 . 44 ) having.

Preferably, mass containers ( 21 . 22 . 23 . 24 ) and / or the nozzle blocks ( 31 . 32 . 33 . 34 ) and / or the pump blocks ( 41 . 42 . 43 . 44 ) with respect to the mass transport direction through the machine ( 1 ) connected in parallel.

Conveniently, the mass container unit ( 2 ), the nozzle block unit ( 3 ) and the pump block unit ( 4 ) in series, the pump block unit ( 4 ) along the mass transport direction through the machine ( 1 ) between the mass container unit ( 2 ) and the nozzle block unit ( 3 ) is arranged.

In a particularly advantageous embodiment, the casting machine has at least two in a machine frame ( 8th ) complete modules (KM1, KM2, KM3, KM4), each complete module comprising a mass container ( 21 . 22 . 23 . 24 ), a nozzle block ( 31 . 32 . 33 . 34 ) and a pump block ( 41 . 42 . 43 . 44 ) having.

• a) Massebehälter (21); b) Pumpenblock (41); c) Düsenblock (31).

Preferably, a complete module (KM1) along the mass transport direction has the following elements in series:

• a) mass container ( 21 ); b) pump block ( 41 ); c) nozzle block ( 31 ).

Conveniently, the mass container ( 21 . 22 . 23 . 24 ) and the pump block ( 41 . 42 . 43 . 44 ) each via a mass transport line ( 51 . 52 . 53 . 54 ) in fluid communication with each other. This can be rigid and short.

Preferably, the mass transport line ( 51 . 52 . 53 . 54 ) flexible.

The nozzle block unit ( 3 ) at least one mold block ( 61 . 62 . 63 . 64 ) are associated with molds or alveoli, wherein preferably the mold block ( 61 . 62 . 63 . 64 ) under a nozzle block ( 31 . 32 . 33 . 34 ) is arranged.

The casting machine can also have at least one conveyor belt ( 7 ) be assigned. It is particularly advantageous if the machine frame ( 8th ) along the conveying direction of the at least one conveyor belt ( 7 ) considered laterally to the right substantially in the shape of a letter "C" or laterally to the left substantially in the form of a turned letter "C" is open. The open to the right area or the left open area of the machine frame ( 8th ) preferably have at least one removable or pivotable vertical support means for supporting the open "C".

Conveniently, the mass container unit ( 2 ), the nozzle block unit ( 3 ) and the pump block unit ( 4 ) Docking means ( 35 . 45 ) for supply lines, preferably each mass container ( 21 . 22 . 23 . 24 ), each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) Has docking means for supply lines. These supply lines are preferably in or on supports of the machine frame ( 8th ), wherein the supply lines for electric power and the supply lines for heat transfer fluids in the machine frame ( 8th ) can be laid separately.

The docking means may be couplings on the mass container unit ( 2 ), at the nozzle block unit and at the pump block unit ( 4 ) on the one hand and to complementary coupling pieces on elements of the machine frame ( 8th ), preferably each mass container ( 21 . 22 . 23 . 24 ), each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) Has coupling pieces. It is particularly advantageous if the coupling pieces and the complementary coupling pieces are quick couplings with seals.

A module block of the casting machine and in particular a complete module (KM1, KM2, KM3, KM4) can be attached to the machine frame (FIG. 8th ) be hung pivotally.

It is particularly advantageous if a module block, in particular a complete module (KM1, KM2, KM3, KM4) on the machine frame ( 8th ) is suspended twice pivotally about two mutually non-parallel pivot axes A1, A2.

In a particularly user-friendly design, the pump block unit ( 4 ) or individual pump blocks ( 41 . 42 . 43 . 44 ) along a guide within the machine frame ( 8th ) displaceable. This guide is preferably formed by two parallel cross beams Q1, Q2 of the machine frame ( 8th ) educated. In this case, the docking points for the supply lines are preferably arranged in the parallel cross members of the guide.

In order to increase the user-friendliness even further, the casting machine can use a transport trolley ( 9 ) associated with the casting machine ( 1 ) can be moved to a pump block ( 41 . 42 . 43 . 44 ) and remove it from the guide 9 ).

Preferably, the trolley ( 9 ) several pump blocks ( 41 . 42 . 43 . 44 ) stacked on each other. Conveniently, this is a pump block support base of the trolley moved vertically. It is particularly advantageous if the vertically displaceable supporting floor is guided in a vertical guide and is supported from below by means of a compression spring. To achieve flushness between the plane of the pump block shelf and the level of the pump block guide, the spring constant k of the compression spring is chosen to be approximately k = MASS × g / HIGH, where "MASS" is the mass of a pump block, "HEIGHT "The height of a pump block and" g "is about 9.81 m / s ² .

Conveniently, the nozzle block unit ( 3 ) and the pump block unit ( 4 ) and define therebetween at least one metering chamber having a metering chamber volume that is defined by the distance between the nozzle block unit ( 3 ) and the pump block unit ( 4 ), wherein the nozzle block unit ( 3 ) and the pump block unit ( 4 ) by means of a drive means ( 100 ) away from each other and are movable toward each other.

The Dosing chamber preferably has a variable chamber volume (V) and at least one metering chamber outlet valve and a metering chamber inlet valve, wherein the metering chamber inlet valve is in fluid communication between the mass container volume and the metering chamber volume is arranged.

In this case, between each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) a plurality of metering chambers may be defined, wherein in particular each metering chamber has a metering chamber outlet valve and a metering chamber inlet valve. The respective chamber volumes of each of the metering chambers can then be changed coupled together. For this purpose, the drive means mentioned above ( 100 ) be an eccentric drive or a cam drive.

By the periodic reciprocation or the periodic approach and removal of the nozzle block unit ( 3 ) and the pump block unit ( 4 ) to each other or each other by means of the drive means ( 100 ) results in a periodic sequence of intake and discharge cycles.

This function of the inventive casting machine (FIG. 1 ) is explained in detail under "Valves" and "Pump Block".

valves

The invention Valve is for suitable for installation in the casting machine described above. It owns a valve body with a valve opening and at least one of the valve opening associated valve flap, which is hinged to the valve body and a elastic bias is exposed, which the valve flap against the valve opening presses and this seals.

Preferably the valve flap is flexible. In addition it consists of a sufficient soft elastic material and / or is sufficient along one dimension small, d. H. has a small flap thickness. Especially advantageous it is when the valve flap is made of elastomeric material, the in pretensioned condition against the valve opening. This can be done achieve a good closing effect of the valve.

to Improving the symmetry of the flow through the valve can be at least two of the valve opening associated valve flaps are provided which hinged to the valve body are each exposed to an elastic bias, which presses the valve flaps against each other and seals the valve opening. In addition, the contribution to the valve opening is then distributed to two valve flaps, As a result, the deflection and / or deformation of each each of the valve flaps is lower. The material in the articulation area of Valve flaps on the valve body or the material of the valve flap itself is less heavily used, which can increase the life of the valves.

Preferably has the inventive Valve flap such a geometry that on a valve cross-sectional plane projected flap edge of at least perpendicular to the valve passage direction a valve flap of the valve from a first radially outer Point of the valve cross-sectional plane over a radially central point the valve cross-sectional plane to a second radially outer Point of the valve cross-sectional plane runs. This angular or curved History allows it, the contact pressure of the valve flap or the flap edge the valve opening or the opening edge to increase, by going from the two radially outer ones Points of the valve cross-sectional plane in the articulation area respectively with a radially inwardly directed force on the valve flap acts.

It is advantageous if the valve at least three of the valve opening assigned Valve flap, which on the valve body in a peripheral region are hinged and each exposed to a resilient bias which presses the valve flaps together and seals the valve opening, wherein the valve is in the direction of the valve passage direction has a raised pyramid-like shape, the pyramid-like surfaces each formed by a valve flap, so that between two respective adjacent pyramidal surfaces respectively a valve slot from a radially outer point to the radial Center extends. This in transmittance raised shape of the Valve increases his resilience against folding in the closed state when in the valve-passage direction downstream fluid pressure greater is the upstream valve pressure in the fluid passage direction. On the other hand, each of the multiple valve flaps only requires a relatively small deformation in order to obtain a sufficient opening of the Effect valve. Such a valve can be three, four, five or have six valve flaps and one each three, four, five or hexagonal pyramidal Have shape.

at a particularly advantageous embodiment, the pyramid-like surfaces viewed concisely from the pyramid tip and through a respective concave shaped valve flap formed whose concavity between the limiting valve slots of the flap and the peripheral articulation area the flap extends. These concave valve flaps form in their Entity a multi-sided pyramid, whose side surfaces, from downstream View, each formed as a concave facet. This contributes to the improved closing effect, d. H. a more stable closed state of the valve.

Of the valve body and the at least one valve flap may be integrally formed. Preferably they are as one piece Elastomer casting formed. As a result, the inventive valve in a casting process, optionally with subsequent crosslinking, z. B. Vulcanization, to be produced.

Alternatively, the valve body and the at least one valve flap can be connected to each other by a positive and / or non-positive plug connection. It is advantageous if the valve body and / or the valve flap (s) are made of flexible material. The degree of bendability (flexibility) of the valve may be determined by the modulus of elasticity and / or by the dimensions orthogonal to the bending line or bending plane of the valve sections or valve components, wherein increasing the modulus of elasticity or increasing the dimension reduces the flexibility and conversely a reduction of the modulus of elasticity or a reduction of the dimension increases the bendability. The valve body and / or the at least one valve flap may also be provided with a stabilizing element or Be coupled stiffening element. Conveniently, the stabilizing element or stiffening element of a first material and the valve or the valve body and / or the at least one valve of a second material, wherein the modulus of elasticity of the first material is greater than the modulus of elasticity of the second material.

at a preferred embodiment is the valve body arranged in a valve seat surrounding it like a ring or a ring, which consists of the first material. Preferably, the valve body and if necessary, the valve flaps made of a soft elastic material, during the coronary or annular valve seat made of a hard-elastic material consists.

All Measures for stiffening or stabilizing the valve as a whole or its sections or components should be inside a soft elastic material or be arranged from the valve seat act on the valve, so that it is guaranteed that the Closing the valve touching each other valve areas, z. B. valve slots, the necessary Can undergo deformation. The touching each other when closing Areas of the valve therefore form sealing areas or the actual Valve seal.

at another embodiment goes through the at least one valve at the transition from the closed to the open Condition of the valve or during the transition from the opened one to the closed state of the valve due to the deformation the valve a pressure point in which the stored in the valve potential energy is maximum. The pressure point can z. B. thereby come about that the valve at its bend from the closed to open State one at first increasing and after overcoming the Pressure point decreasing compression or compression along the bending line or bending plane experiences. The maximum potential energy is then predominantly in the form of Compression energy. The deformation of the valve may, for. B. a Evert one Valve flap from a concave shape of the valve flap to a convex Be the shape of the valve flap.

pump blocks

Everyone Pump block has a metering chamber with variable chamber volume and with at least one metering chamber outlet valve and a metering chamber inlet valve, wherein the metering chamber inlet valve in fluid communication between the Mass container volume and the metering chamber volume is arranged.

One Pump block is a pump whose operation is a suction stroke and has an ejection stroke.

The Dosing chamber with changeable Chamber volume, dosing chamber outlet valve and dosing chamber inlet valve together form a dosing unit. Arrives during an intake stroke Mass over the open one Inlet valve with closed outlet valve in the dosing chamber into it, and while An exhaust hub enters the mass via the open exhaust valve when it is closed Inlet valve out of the dosing to z. B. in molds, in alveoli or on a conveyor belt to be poured.

Of the Pump block can be complementary a hermetically sealable and communicating with a pressure source bulk container exhibit. This can be the filling the dosing with mass (dosing) by pressure on the mass in the mass container done or at least supported become. As a source of pressure, a source of compressed gas, in particular a compressed air source can be used. Instead of the pressure source or as a supplement To her, the pressure generating means can be hermetically sealed bulk container with changeable Have mass container volume. this makes possible a dosing in the metering causing or at least supporting pressure generation in the mass container Decreasing the mass container volume.

Preferably extend the valve passage direction of the at least one metering chamber outlet valve from the metering chamber volume to the surrounding the casting machine the atmosphere and the valve passage direction of the metering chamber inlet valve from the mass container volume to the dosing chamber volume. This can be done by enlarging the Dosing chamber volume in the dosing a negative pressure are generated so that the dosing chamber outlet valve remains closed and up the metering chamber inlet valve opens, causing mass to flow into the metering chamber until pressure is equalized. By Reducing the dosing chamber volume can then be done in the dosing chamber an overpressure be generated so that the metering chamber inlet valve closes and the metering chamber outlet valve opens, causing mass to flow out of the metering chamber until pressure is equalized.

Preferably the dosing chamber has a plurality of dosing chamber outlet valves and only one dosing chamber inlet valve. Alternatively, dosing chamber multiple dosing chamber outlet valves and multiple dosing chamber inlet valves have.

In particular, the number of Dosierkammer outlet valves and the number of Dosier Chamber inlet valves to be equal to a metering chamber, wherein each metering chamber outlet valve is assigned a metering chamber inlet valve expediently.

at a particularly advantageous embodiment has the casting machine or her pump block a plurality of metering chambers, preferably each Dosing a metering chamber outlet valve and a metering chamber inlet valve having. Thereby can a plurality of metering chambers connected in parallel in the casting machine can be arranged, whereby a high throughput can be achieved. Preferably are the respective chamber volumes of each of the metering chambers with each other coupled changeable.

Further Advantages, features and applications of the invention result from the attached drawing, wherein:

1 a schematic perspective view of a first embodiment of the inventive casting machine is;

2 a further schematic perspective view of the first embodiment of the inventive casting machine is;

3 a schematic perspective view of a part, ie some modules of the first embodiment of the inventive casting machine is; and

4 a side view of a part of a second embodiment of the inventive casting machine is.

1

casting machine

2

Mass container unit

3

Nozzle block unit

4

Pump block unit

7

conveyor belt

8th

machine frame

9

Dolly

21 22, 23, 24

separate bulk container

31 32, 33, 34

separate Nozzle blocks or "nozzle"

35

docking

41 42, 43, 44

separate pump blocks

45

docking

51 52, 53, 54

Mass transport line (flexible)

61, 62, 63, 64

mold blocks

100

drive means

KM1, KM2, KM3, KM4

Complete modules

A1, A2

swiveling axes

Q1, Q2

crossbeam

M

Dimensions

Claims (39)

Casting machine ( 1 ) for pouring a flowable mass (M) with: - a mass container unit ( 2 ) for receiving the flowable mass (M); A nozzle block unit ( 3 ) in fluid communication with the mass container unit ( 2 ); A pump block unit ( 4 ) for creating a pressure gradient on a nozzle ( 32 ) of the nozzle block unit ( 3 ), characterized in that the mass container unit ( 2 ) at least two separate mass containers ( 21 . 22 . 23 . 24 ) having. Casting machine according to claim 1, characterized in that the mass containers ( 21 . 22 . 23 . 24 ) with respect to the mass transport direction through the machine ( 1 ) are connected in parallel. Casting machine ( 1 ) for casting a flowable mass (M), in particular according to claim 1 or 2, comprising: - a mass container unit ( 2 ) for receiving the flowable mass (M); A nozzle block unit ( 3 ) in fluid communication with the mass container unit ( 2 ); A pump block unit ( 4 ) for creating a pressure gradient on a nozzle ( 32 ) of the nozzle block unit ( 3 ), characterized in that the nozzle block unit ( 3 ) at least two separate nozzle blocks ( 31 . 32 . 33 . 34 ) having. Casting machine according to claim 3, characterized in that the nozzle blocks ( 31 . 32 . 33 . 34 ) with respect to the mass transport direction through the machine ( 1 ) are connected in parallel. Casting machine ( 1 ) for casting a flowable mass (M), in particular according to one of claims 1 to 4, comprising: - a mass container unit ( 2 ) for receiving the flowable mass (M); A nozzle block unit ( 3 ) in fluid communication with the mass container unit ( 2 ); A pump block unit ( 4 ) for creating a pressure gradient on a nozzle ( 32 ) of the nozzle block unit ( 3 ), characterized in that the pump block unit ( 4 ) at least two separate pump blocks ( 41 . 42 . 43 . 44 ) having. Casting machine according to claim 5, characterized in that the pump blocks ( 41 . 42 . 43 . 44 ) with respect to the mass transport direction through the machine ( 1 ) are connected in parallel. Casting machine according to one of claims 1 to 6, characterized in that the mass container unit ( 2 ), the nozzle block unit ( 3 ) and the pump block unit ( 4 ) are connected in series, the pump block unit ( 4 ) along the mass transport direction through the machine ( 1 ) between the mass container unit ( 2 ) and the nozzle block unit ( 3 ) is arranged. Casting machine according to one of claims 1 to 7, characterized in that the casting machine at least two in a machine frame ( 8th ) comprises complete modules (KM1, KM2, KM3, KM4), each complete module comprising a mass container ( 21 . 22 . 23 . 24 ), a nozzle block ( 31 . 32 . 33 . 34 ) and a pump block ( 41 . 42 . 43 . 44 ) having. Casting machine according to claim 8, characterized in that a complete module (KM1) along the mass transport direction comprises the following elements in series: a) mass containers ( 21 ); b) pump block ( 41 ); c) nozzle block ( 31 ). Casting machine according to claim 9, characterized in that the mass container ( 21 . 22 . 23 . 24 ) and the pump block ( 41 . 42 . 43 . 44 ) each via a mass transport line ( 51 . 52 . 53 . 54 ) are in fluid communication with each other. Casting machine according to claim 10, characterized in that the mass transport line ( 51 . 52 . 53 . 54 ) is flexible. Casting machine according to one of claims 1 to 11, characterized in that the nozzle block unit ( 3 ) at least one mold block ( 61 . 62 . 63 . 64 ) is associated with molds or alveoli. Casting machine according to claim 12, characterized in that the mold block ( 61 . 62 . 63 . 64 ) under a nozzle block ( 31 . 32 . 33 . 34 ) can be arranged. Casting machine according to claim 13, characterized in that the casting machine ( 1 ) at least one conveyor belt ( 71 . 72 ) is assignable. Casting machine according to claim 14, characterized in that the machine frame ( 8th ) along the conveying direction of the at least one conveyor belt ( 71 . 72 ) viewed laterally to the right substantially in the shape of a letter "C" or laterally to the left substantially in the shape of an inverted letter "C" is open. Casting machine according to claim 15, characterized in that the region open to the right or the region of the machine frame open to the left ( 8th ) at least one removable vertical support means ( 81 . 82 ) having. Casting machine according to one of claims 1 to 16, characterized in that the mass container unit ( 2 ), the nozzle block unit ( 3 ) and the pump block unit ( 4 ) Have docking means for supply lines. Casting machine according to claim 17, characterized in that each mass container ( 21 . 22 . 23 . 24 ), each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) Has docking means for supply lines. Casting machine according to claim 17 or 18, characterized in that the supply lines in or on supports of the machine frame ( 8th ) are laid. Casting machine according to claim 19, characterized in that supply lines for electric current and supply lines for heat transfer fluids in the machine frame ( 8th ) are laid separately. Casting machine according to one of claims 17 to 20, characterized in that the docking means by coupling pieces on the mass container unit ( 2 ), at the nozzle block unit and at the pump block unit ( 4 ) on the one hand and by complementary coupling pieces on elements of the machine frame ( 8th ) are formed. Casting machine according to one of claims 17 to 20, characterized in that each mass container ( 21 . 22 . 23 . 24 ), each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) Has coupling pieces. Casting machine according to claim 21 or 22, characterized characterized in that the coupling pieces and the complementary coupling pieces quick couplings with seals are. Casting machine according to one of claims 8 to 23, characterized in that a module block, in particular a complete module (KM1, KM2, KM3, KM4) on the machine frame ( 8th ) is suspended pivotally. Casting machine according to claim 24, characterized in that a module block, in particular a complete module (KM1, KM2, KM3, KM4) on the machine frame ( 8th ) is suspended double pivotable about two mutually non-parallel pivot axes. Casting machine according to one of claims 7 to 25, characterized in that the pump block unit ( 4 ) or individual pump blocks ( 41 . 42 . 43 . 44 ) along a guide within the machine frame ( 8th ) are displaceable. Casting machine according to claim 26, characterized in that the guide by two parallel cross member of the machine frame ( 8th ) is formed. Casting machine according to claim 28, characterized that in the parallel cross members of the guide the docking points for the supply lines are arranged. Casting machine according to one of claims 26 to 28, characterized in that it has a trolley ( 9 ) associated with the casting machine ( 1 ) can be moved to a pump block ( 41 . 42 . 43 . 44 ) and remove the pump block ( 41 . 42 . 43 . 44 ) in the trolley ( 9 ). Casting machine according to claim 29, characterized in that the trolley ( 9 ) several pump blocks ( 41 . 42 . 43 . 44 ) can be stacked on top of each other. Casting machine according to claim 30, characterized that a pump block support floor of the trolley vertical is movable. Casting machine according to claim 31, characterized that the vertically movable support floor is guided in a vertical guide and is supported from below by means of a compression spring. Casting machine according to claim 32, characterized in that the spring constant k of the compression spring is approximately k = MASS × g / HEIGHT, where "MASS" is the mass of a pump block, "HEIGHT" is the height of a pump block and "g" is approximately 9.81 m / s ² is. Casting machine according to one of claims 7 to 33, characterized in that the nozzle block unit ( 3 ) and the pump block unit ( 4 ) are coupled together and define between them at least one metering chamber with a metering chamber volume, which is defined by the distance between the nozzle block unit ( 3 ) and the pump block unit ( 4 ), wherein the nozzle block unit ( 3 ) and the pump block unit ( 4 ) by means of a drive means ( 100 ) away from each other and are movable toward each other. Casting machine according to claim 34, characterized that the dosing a changeable Chamber volume (V) and at least one dosing chamber outlet valve and a metering chamber inlet valve, wherein the metering chamber inlet valve in fluid communication between the bulk container volume and the metering chamber volume is arranged. Casting machine according to claim 34 or 35, characterized in that between each nozzle block ( 31 . 32 . 33 . 34 ) and each pump block ( 41 . 42 . 43 . 44 ) a plurality of metering chambers are defined. Casting machine according to claim 36, characterized each dosing chamber has a dosing chamber outlet valve and a dosing chamber inlet valve having. Casting machine according to claim 37, characterized that the respective chamber volumes of each of the metering chambers with each other coupled changeable are. Casting machine according to one of claims 34 to 38, characterized in that the drive means ( 100 ) is an eccentric or cam drive.