CN112088078A

CN112088078A - Slip casting die and slip casting apparatus

Info

Publication number: CN112088078A
Application number: CN201980030638.0A
Authority: CN
Inventors: R·塔纳西克祖克; U·海诺德
Original assignee: DORST Technologies GmbH and Co KG
Current assignee: DORST Technologies GmbH and Co KG
Priority date: 2018-05-08
Filing date: 2019-04-23
Publication date: 2020-12-15
Also published as: DE202018102563U1; DE202018102563U8; EP3790716A1; WO2019214936A1

Abstract

The invention relates to a slip casting die, comprising a die space (18) for die casting a casting (20) and die parts (10-16) which enclose the die space (18) in a die casting position, wherein at least two of the die parts (10, 11), namely at least a first die part (10) and a second die part (11), can be adjusted independently of one another at least during a demolding process in at least two different directions and/or in a direction which is neither parallel nor perpendicular to an adjustment direction of a third die part.

Description

Slip casting die and slip casting apparatus

Technical Field

The invention relates to a slip casting die and a corresponding slip casting device for casting die castings.

Background

A slip casting mold and a corresponding slip casting device are described, for example, in DE 102012004896 a 1. There, what are known as additional mold parts are also described which are provided in addition to the mold parts which are adjustable in a first direction and can be adjusted in a demolding direction which has not only a directional component in the first direction but additionally a directional component in a second direction perpendicular to the first direction. Furthermore, the use of a plurality of additional mold parts, which may also be arranged one inside the other, is also mentioned. However, it will not be further elucidated how they are specifically configured, in particular how the respective die casting mold is specifically designed. In general, the solution according to this prior art is considered to be in need of improvement, in particular in terms of complexity concerning possible geometries, in particular undercuts.

Disclosure of Invention

The object of the present invention is therefore to provide a slip casting mold and a slip casting installation, in which the most complex possible mold parts, in particular also undercut mold parts, should be able to be produced in the simplest possible manner.

This object is achieved, inter alia, by the features of claim 1.

The object is achieved in particular by a slip casting die, wherein the slip casting die comprises:

a mould space for die casting the casting and a mould part enclosing the mould space in the die casting position,

at least two of the mould parts, namely at least the first and the second mould part, can each be adjusted independently of one another at least during the demoulding process (in particular when the remaining mould parts are stationary) in at least two different directions and/or in a direction which is neither parallel nor perpendicular to the demoulding-adjustment direction of the third mould part.

Adjustment independently of one another is to be understood in particular as enabling the first and second mold parts to be moved at least temporarily in different directions and/or the first mold part to be moved during the rest of the second mold part (or vice versa). In this respect, it is not excluded that the first and second mould parts are substantially mechanically coupled (as long as the above-mentioned movement can be achieved) and/or electrically/electronically connected to each other, e.g. powered via a common energy supply or manipulated via a common (electronic) control. In particular, a control program can be provided in which the movement processes of the first and second mold parts are dependent on one another, for example in that respect the second mold part is moved only when the first mold part is moved or both mold parts are moved simultaneously.

A movement in a particular direction is to be understood in particular as a movement which is at least partially translatory (or straight). This does not necessarily exclude that also a rotational movement takes place. But optionally only a translational movement. The third mould part (in particular as described above) is preferably configured such that it can only be adjusted in one direction (and the exact opposite direction). The direction which is neither parallel nor perpendicular to this adjustment direction thus extends at an angle of between 5 and 85 degrees, more preferably between 15 and 75 degrees, even more preferably between 30 and 60 degrees, for example, with respect to the adjustment direction of the third mould part.

To the extent that the first or second mould part is adjustable in at least two different directions, the two different directions may be at an angle of 90 degrees or another angle (but not 180 degrees) to each other. In an embodiment, the direction may optionally be (at least in one plane) arbitrarily adjustable, in particular continuously. Alternatively, the direction can also be adjusted arbitrarily (in particular continuously) in three-dimensional space.

Unless expressly stated to the contrary, "direction" also includes the opposite direction (180 ° apart).

Overall, by configuring at least two mold parts that can be adjusted independently of one another, a simple possibility is provided for also forming complex (different) shapes for the cast part.

A slip casting die is to be understood to mean, in particular, a die casting die in which a slip casting is pressed (or introduced or injected) into a die space at a pressure of a few bar, in particular at a pressure of more than 5 bar, preferably at a pressure of 10 to 20 bar. The mould part is here made of a permeable material so that liquid from the grouting invades into the mould part. The solid components of the slip form fragments on the walls of the mould space. The slip casting material is preferably a ceramic material in order to cast, in particular, hygiene articles such as wash basins, bidets or toilets into castings. At least one of the mold parts usually also has an outlet opening in order to be able to discharge the slip casting liquid from the die casting mold in a targeted manner.

In particular, in such a die casting mold, two or more mold parts are provided which are moved toward one another in a respective linear direction in order to enclose the mold space or are moved away from one another in a linear direction in order to open the mold space for removing the chips formed therein.

At least three, at least four, at least five or more mold parts may be provided in total. The mold parts comprise at least a first mold part and a second mold part. The first and second mould parts may be used as further mould parts between the other mould parts. The first and second mold parts may have at least one wall which also together form the mold space. The first and second mould parts optionally have no walls forming, in particular, liquid-tight outer walls of the die casting mould, as may be the case for the other mould parts.

The first and second mold parts can be arranged within the die casting mold or between the remaining mold parts of the die casting mold such that, from the point of view of the direction of linear movement of all the remaining mold parts, in particular the mold parts adjacent to the first or second mold part, the first and second mold parts are adjustable in the tilting direction or in a plurality of directions which, as a whole (when viewing a connecting line between the starting position and the intermediate or end position), correspond to the tilting movement. This enables the first or second mould part (together with its respective permeable body) to be inserted between the other mould parts. Thus, complex undercut walls of the casting can also be cast particularly efficiently.

Preferably, a first adjusting device, in particular a first adjusting device comprising a first robot arm or a robot arm, is provided for adjusting the first mold part. Alternatively or additionally, a second adjusting device, in particular a second adjusting device comprising a second robot arm or robot arm, may be provided for adjusting the second mold part. This allows variable adjustment in a simple manner. The respective robot arm may also simultaneously serve as a holding device for holding the first or second mold part.

In a particular embodiment, the first and/or second mould part is arranged or arrangeable at least partially inside the cavity or recess of the casting in the die-casting position (before demoulding). The first and second mould parts are here preferably configured for forming a protrusion inside the cavity or recess. The projection preferably has at least one undercut.

In a specific embodiment, at least one further mold part, namely at least one third mold part, is or can be arranged inside a cavity or recess of the casting (in particular in the die-casting position), wherein the third mold part can optionally be adjusted in only one direction. Preferably, the injection molding tool is designed such that, for demolding (removal) of the first and/or second mold part, the third mold part is first demolded (removed). In a particularly preferred manner, the third mold part can first provide a space inside the cavity or recess of the casting in a first demolding step, and then the first and/or second mold part can be moved (manipulated) inside this space, so that the variably (with respect to its orientation) adjustable mold part can be removed from the cavity or recess of the casting. In this way, a relatively complex geometry, in particular an undercut shape, can be formed inside the recess of the casting.

The (optionally only) adjustment direction of the third mould part may have at least a z-component, wherein the first adjustment direction of the first mould part has at least an x-component and the second adjustment direction of the first mould part has at least a y-component, and/or the first adjustment direction of the second mould part has at least an x-component and the second adjustment direction of the second mould part has at least a y-component. Preferably, the first and second adjustment directions of the first mould part are different. Alternatively or additionally, the first and second adjustment directions of the second mould part are different from each other. If the z-direction is defined by the (optionally sole) adjustment direction of the third mould part, the first and/or second mould part can optionally be movable (at least in stages or depending on the position of the respective other mould part) in an x-direction perpendicular to the z-direction and in a y-direction perpendicular to the z-direction and the x-direction.

In a particular embodiment, the first and second mold parts can be adjusted at least in stages (in particular during the first stage) in mutually opposite adjustment directions and/or can be adjusted at least in stages (in particular during the second stage) in the same adjustment direction. In particular in the phase of initiating the demoulding (removal) of the first and second mould parts, the mould parts cannot be adjusted in the same direction (but can in particular only be moved away from each other). In a subsequent stage, the first and second mold parts can also be moved parallel to one another if necessary (but this is not mandatory).

The first and second mould parts may be configured to be movable simultaneously, overlapping in time and/or sequentially. Preferably, the first and/or second mould parts are rotatable about at least one axis (optionally at least two or at least three axes). Thereby, demolding (or removal of the mold part) can be further simplified.

Furthermore, the above object is achieved by a slip casting device comprising:

a receiving element for at least one die casting die of the above-mentioned type, and

at least one holding and adjusting device for temporarily holding and adjusting the first mold part and/or the second mold part.

The holding and adjusting device may be a common holding and adjusting device for both mould parts (however, in the sense described above, the mould parts should be movable or adjustable independently of each other). Alternatively, each of the first and second mould parts may be provided with its own holding and adjustment means. Preferably, the (respective) holding and adjusting means are formed by a robot arm.

The object is also achieved by a slip casting system, in particular of the type mentioned above, comprising a slip casting die as described above.

The above task is also solved by a method comprising the steps of:

-providing a slip casting mould of the above-mentioned type and/or a slip casting apparatus of the above-mentioned type;

-performing a demolding process, wherein the first mold part is moved in at least two different directions and/or in a direction which is neither parallel nor perpendicular to the adjustment direction of the third mold part, and the second mold part is moved independently of the adjustment of the first mold part in at least two different directions and/or in a direction which is neither parallel nor perpendicular to the adjustment direction of the third mold part.

Further method features result from the above description of the slip casting mold or slip casting installation, in particular the functional features explained there.

In particular, the slip-casting mold can have at least three, preferably at least five, more preferably at least six or more mold parts. In particular embodiments, exactly two or more mold parts may be moved in more than one direction.

The first and/or second mold part preferably has at least one recess, which is preferably designed to form an (undercut) projection inside the recess of the casting.

Further embodiments result from the dependent claims.

Drawings

The invention is described below on the basis of an embodiment which is explained in detail on the basis of the drawing. In the drawings:

fig. 1 shows a top view of a slip casting mold according to the invention in a die casting position;

fig. 2 shows the die casting mold according to fig. 1 in a sectional view along the line a-a;

fig. 3 shows a partially demoulded state of the die casting mould according to fig. 1;

fig. 4 shows the die casting mold according to fig. 3 in a sectional view along the line a-a;

fig. 5 shows the die casting mold according to fig. 3 in a sectional view along the line B-B;

fig. 6 shows a state of further demoulding of the die casting mould according to fig. 1;

fig. 7 shows the die casting mold according to fig. 3 in a sectional view along the line a-a;

fig. 8 shows the die casting mold according to fig. 3 in a sectional view along the line B-B;

fig. 9 shows a further demoulding state of the die casting mould in a view similar to fig. 1;

FIG. 10 shows a cross-sectional view along line A-A in FIG. 6; and is

Fig. 11 shows a cross-sectional view along line B-B in fig. 6.

Detailed Description

In the following description, the same reference numerals are used for the same components and functionally identical components.

Fig. 1 and 2 show a die casting mold comprising a first mold part 10, a second mold part 11, a third mold part 12, a fourth mold part 13, a fifth mold part 14, a sixth mold part 15 and a seventh mold part 16.

The third to seventh mould parts 12 to 16 are preferably movable in only one direction (respectively) (and the corresponding opposite direction). In particular, the fifth and

sixth mould parts

14, 15 are (only) movable in the x-direction (see fig. 2); the fourth mould part 13 and the seventh mould part 16 are (only) movable in the y-direction; the third mould part 12 is (only) movable in the z-direction (see figure 1).

In contrast, the first mold part 10 and the second mold part 11 are preferably movable in at least two directions, in particular at least in the x-direction and in the y-direction (optionally also in the z-direction). Depending on the geometry, the movements can also be envisaged as temporally successive movements in the x-direction and the y-direction and movements having an x-component and a (simultaneous) y-component.

The cavity 18 defined by the mould parts 10 to 17 is filled with a slip-casting compound 19 which ultimately defines a casting 20.

According to an embodiment, the casting 20 is preferably a toilet.

The casting 20 in turn has a recess 21, inside which the first mould part 10, the second mould part 11 and the third mould part 12 (in the position according to fig. 1) are arranged (locally). In addition, a protruding portion 22 is formed inside the recessed portion 21, and the protruding portion is undercut (with respect to the y direction). The projections 22 in turn correspond to

respective recesses

22a, 22b, 22c and 22d which are made on the first mould part 10 and the second mould part 11 and together define said projections.

Now, the fourth mould part 13 is adjusted (in the y-direction) in the first demoulding stage. The results are shown in fig. 3 to 5. It will also be seen that in order to release the path of the first mould part 10 and the second mould part 11 in the y-direction, an adjustment of the fourth mould part 13 is required.

In a further demolding phase, the third mold part 12 is adjusted (in the z-direction). The results are shown in fig. 6 and 8. In order to be able to remove the first and

second mold parts

10, 11, an adjustment of the third mold part 12 is required, since the first and

second mold parts

10, 11 cannot be adjusted in the x-direction (since the third mold part 12 is now in the blocking position) as well as in the y-direction as long as the third mold part is in the position according to fig. 2, since this is prevented by the undercut formation of the cavity 18 (and in particular of the projection 22).

Starting from the position in fig. 6 to 8, the first and second mold parts (as shown in fig. 9 to 11) can now be removed and more precisely by a movement first in the x direction and then in the y direction. Depending on the configuration of the undercut (or other undercut) of the projection 22, this can also be an adjustment direction with (simultaneously) an x-component and a y-component, or an adjustment (or demolding) process in which a plurality of direction changes and/or (phased) rotations of the

mold parts

10, 11 are carried out. For example, the adjustment may be performed first in the (only) x-direction, then rotated around an axis in the z-direction and subsequently (translational) adjusted with an x-component and a y-component.

Holding devices

10a, 11a (preferably rod-shaped or tube-shaped) are mounted or integrated on the first and second tool parts, via which the first and second tool parts can be moved. The orientation and arrangement of the

holding devices

10a, 11a are only shown purely schematically. In particular, the holding

device

10a, 11a may extend between two or more mould parts. The holding device 10a may extend, for example, between the

mould parts

12, 14 on the one hand and the mould part 13 on the other hand. The holding device 11a may extend, for example, between the

mould parts

12, 15 on the one hand and the mould part 13 on the other hand.

It should be pointed out here that all the components mentioned above are required to be essential for the invention, either alone or in any combination (in particular the details shown in the figures). Variations thereon are well known to those skilled in the art.

List of reference numerals

10 first mould part

10a holding device

11 second mould part

11a holding device

12 third mould part

13 fourth mould part

14 fifth mould part

15 sixth mould part

16 seventh mould part

18 cavity

19 size-die casting compound

20 casting

21 concave part

22 projection

22a recess

22b recess

22c recess

22d recess

Claims

1. Slip casting-die casting die, include:

a mould space (18) for die casting the casting (20) and mould parts (10-16) enclosing the mould space (18) in a die casting position,

-wherein at least two of the mould parts (10, 11), namely at least the first (10) and the second (11) mould part, are adjustable independently of each other in at least two different directions and/or in a direction which is neither parallel nor perpendicular to the adjustment direction of the third mould part, at least during the demoulding process.

2. The die casting mold as claimed in claim 1, wherein a first adjusting device, in particular a first adjusting device comprising a first robot arm, is provided for adjusting the first mold part (10) and/or a second adjusting device, in particular a second adjusting device comprising a second robot arm, is provided for adjusting the second mold part (11).

3. The die casting mold according to claim 1 or 2, wherein the first mold part (10) and/or the second mold part (11) are arranged or can be arranged at least partially inside a cavity or recess (21) of the casting (20) in the die casting position, wherein the first mold part (20) and the second mold part (11) are preferably configured here for forming a projection (22) inside the cavity or recess (21).

4. A die casting mould according to claim 3, wherein at least one further mould part, namely at least one third mould part (12), is provided or arrangeable inside a cavity or recess of the casting, the third mould part (12) optionally being adjustable in only one direction.

5. The die casting mold according to any of the preceding claims, in particular according to claim 4, wherein the die casting mold is configured such that, for demolding the first mold part (10) and/or the second mold part (11), a further mold part, in particular a third mold part (12), is to be demolded first.

6. Die casting mold according to one of the preceding claims, wherein the adjustment direction, optionally the only adjustment direction, of the third mold part (12) has at least a z-component, wherein the first adjustment direction of the first mold part (10) has at least an x-component and the second adjustment direction of the first mold part (10) has at least a y-component, and/or the first adjustment direction of the second mold part (11) has at least an x-component and the second adjustment direction of the second mold part (11) has at least a y-component.

7. Die casting mould according to any of the preceding claims, wherein the first mould part (10) and the second mould part (11) are at least stepwise adjustable in mutually opposite adjustment directions and/or are at least stepwise adjustable in the same adjustment direction.

8. Die casting mould according to any of the preceding claims, wherein the first mould part (10) and the second mould part (11) are movable simultaneously, overlapping in time and/or sequentially.

9. Die casting mould according to one of the preceding claims, wherein the first mould part (10) and/or the second mould part (11) is rotatable around at least one axis.

10. A slip casting apparatus comprising:

-a receiving element for at least one die casting mould according to any of the preceding claims, and

-at least one holding and adjusting device for temporarily holding and adjusting the first mould part (10) and/or the second mould part (11).

11. Slip casting device, in particular according to claim 10, comprising a die casting mould according to any of claims 1 to 9.