EP3790716A1

EP3790716A1 - Pressure slip casting mould and pressure slip casting system

Info

Publication number: EP3790716A1
Application number: EP19721567.6A
Authority: EP
Inventors: Roman Tanasijczuk; Uwe Heinold
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: 2021-03-17
Also published as: DE202018102563U8; WO2019214936A1; DE202018102563U1; CN112088078A

Abstract

A pressure slip casting mould having a mould cavity (18) for pressure-casting a cast part (20) and mould parts (10-16) surrounding the mould cavity (18) in a pressure slip casting position, wherein at least two (10, 11) of the mould parts, specifically at least one first (10) and one second (11) mould part, at least during a demoulding process, are each displaceable independently of one another in at least two different directions and/or in a direction that is neither parallel nor perpendicular to a displacement direction of a third mould part.

Description

Slip die casting and slip die casting line

description

The invention relates to a slip die casting mold and a corresponding slip die casting system for die casting a printing part.

A slip-die casting mold and a corresponding slip-die casting installation are described, for example, in DE 10 2012 004 896 A1. There is also described a so-called additional molding, which is provided in addition to a molding which is adjustable in a first direction, and in a Entformungsrichtung with both a directional component in the first direction and additionally a directional component in a second

Direction perpendicular to the first direction is adjustable. Furthermore, the use of several, possibly nested in one another arranged, additional molded parts mentioned. How these can be embodied in concrete terms, and in particular how a corresponding die-casting mold can be embodied concretely, will however not be explained further. Overall, the solution according to this prior art is considered to be in need of improvement, especially as far as the complexity of possible geometries, in particular undercuts, is concerned.

It is therefore an object of the invention to propose a slip-die casting mold and a slip-die casting plant, wherein as complex as possible, especially undercut, molding should be produced in the simplest possible way possible.

This object is achieved in particular by the features of claim 1.

In particular, the object is achieved by a slip die, wherein the slip die comprises:

a mold space for die-casting a casting and the mold space in a die-casting enclosing moldings,

- Wherein at least two of the mold parts, namely at least a first and a second mold part, at least during a demolding (in particular at a rest of the remaining moldings) each, independently, in at least two different directions and / or in a direction that neither parallel nor is perpendicular to a Entformungs- adjustment direction of a third molding, are adjustable.

By an independent adjustment is to be understood in particular that it is possible that the first and second mold part are at least temporarily moved in different directions and / or the first molded part is moved while the second rests (or vice versa). In that regard is not

excluded that first and second molded part are basically mechanically coupled (as long as the above-mentioned movements are possible) and / or electrically / electronically connected to each other, for example, be supplied via a common power supply or controlled by a common (electronic) control. In particular, a

Be provided control program, in which the movements of the first and second mold part depend on each other, for example in the sense that the second mold part is moved only when the first mold part is moved or that both mold parts are moved simultaneously.

A movement in a certain direction is to be understood as meaning in particular a movement which takes place at least in sections translationally (or straight ahead). This does not necessarily exclude that a rotational movement takes place. Possibly. But only translational movements take place. A (in particular the above) third molding is preferably configured so that it is adjustable only in one direction (and the exact opposite direction). A direction which is neither parallel nor perpendicular to this adjustment direction, thus extends for example at an angle between 5 degrees and 85 degrees, more preferably 15 degrees and 75 degrees, even more preferably 30 degrees and 60 degrees with respect to the adjustment of the third molding.

Insofar first or second molded part in at least two different

Directions should be adjustable, these two different

Directions to each other have an angle of 90 degrees or another angle, but not an angle of 180 °. In embodiments, the direction may optionally be arbitrary (at least within a plane) adjustable

(especially continuous). If necessary, the direction can also be adjusted arbitrarily (in particular continuously) in three-dimensional space.

Unless explicitly referred to an opposite direction, "direction" also includes the (opposite by 180 °) opposite direction.

Overall, the formation of at least two mold parts, which in turn are independently adjustable, provides an easy way to form even complex (different) molds for castings.

Under a slip-die is understood in particular a die, in the slip at a pressure of several bar, in particular under a pressure of more than 5 bar, preferably under a pressure of 10 to 20 bar, pressed into the mold cavity (or introduced or poured). The moldings are formed from a permeable material, so that

Liquid from the slurry penetrates into the moldings. Solid constituents of the slip form a broken piece on a wall of the mold space. The slip material is preferably ceramic material to cast as a casting in particular sanitary articles such as sinks, bidets or toilet bowls. Usually, at least one of the molded parts also has one

Outlet opening to selectively discharge the liquid of the slurry from the die to the outside. In particular, in such a die two or more mold parts are provided, which are moved towards each other in a linear direction to enclose the mold space, or moved away from each other in a linear direction to open the mold space for removal of a cullet formed therein.

Overall, at least three, at least four, at least five or more molded parts can be provided. Under these moldings are at least the first and the second mold part. The first and the second molded part can be used as further molded parts between the other molded parts. The first and the second mold part may have at least one wall which forms the mold space with. If necessary, the first and second molded part has no wall which forms a particularly liquid-tight outer wall of the die, as may be the case with the other molded parts.

The first and second mold part may be arranged within the die or between the other moldings so that it is adjustable in an oblique direction from the viewpoint of the linear direction of movement of all other moldings, in particular the adjacent to the first or second mold part moldings or in several A direction is adjustable, the total (when considering a connecting line between an initial position and an intermediate or end position) correspond to an oblique movement. This allows a

Inserting the first or second molded part (with its respective permeable body) between the other molded parts. This makes it possible to cast complex undercut walls of a casting particularly effectively.

Preferably, for adjusting the first molded part, a first

Adjustment device, in particular comprising a first robot or

Robot arm, provided. Alternatively or additionally, a second adjusting device, in particular comprising a second robot or robot arm, may be provided for adjusting the second molded part. As a result, a variable adjustment is made possible in a simple manner. The respective robot arm can also serve as a holding device to the first or second

To keep molding. In concrete embodiments, the first and / or second molded part in the die casting position (before demolding) at least partially within a cavity or a recess of the casting can be arranged or

arranged. First and second molded part are preferably configured to form a projection located within the cavity or the recess. The projection preferably has at least one undercut.

In a specific development, at least one further, namely at least a third, molded part can be arranged or arranged within the cavity or the recess of the casting (in particular in the die casting position), the third molding optionally being adjustable in only one direction. Preferably, the die is configured such that for demolding (removal) of the first and / or second mold part, the third mold part is first to demould (remove). In a particularly preferred manner, in a particularly preferred manner, the third molded part initially creates space within the cavity or the recess of the casting within which the first and / or second molded part is movable (maneuverable), so that the variable (with respect to FIG their direction) adjustable moldings from the cavity or the recess of the casting can be removed. Thereby can

comparatively complex geometries, in particular undercut shapes within a recess of the casting, are produced.

An (possibly exclusive) adjustment of a / of the third molded part may have at least one z-component, wherein a first adjustment direction of the first molded part has at least one x-component and a second

Adjustment of the first mold part has at least one y-component and / or wherein a first adjustment of the second mold part has at least one x-component and a second adjustment of the second mold part has at least one y-component. Preferably, first and second adjustment of the first molding are different. Alternatively or additionally, the first and second adjustment direction of the second molding are different from each other. If a z-direction is defined by the (possibly exclusive) adjustment direction of the third molding, the first and / or the second molding can optionally

both in a direction perpendicular to the z-direction x-direction and in one of the z and x-direction vertical y-direction to be movable (at least in phases or in dependence on the position of the other moldings).

In specific embodiments, first and second shaped parts are adjustable, at least in phases (in particular during a first phase), in mutually opposite directions of adjustment and / or, at least in phases (in particular in a second phase), in the same adjustment directions. In particular, in a demolding (the removal) of the first and second molding introductory phase, the moldings are not adjustable in the same direction (but in particular only wegbewegbar from each other). In a later phase, the first and second molded parts can also be moved parallel to one another (but this is not mandatory).

First and second molded part can be designed to be movable simultaneously, overlapping in time and / or successively movable. Preferably, the first and / or second molded part is / are rotatable about at least one axis (possibly at least two or at least three axes). As a result, the demolding (or the removal of the moldings) can be further simplified.

The above object is further achieved by a slipstream die casting plant comprising:

- A receptacle for at least one die of the above

described type and

- At least one holding and adjusting device for temporarily holding and adjusting the first and / or second molded part.

In the holding and adjusting device may be a common holding and adjusting device for both moldings (the moldings, however, should be independent of each other, in the above sense, movable or adjustable). Alternatively, a separate holding and adjusting device can be provided for each of the first and second molded part. Preferably, the (respective) holding and adjusting device is formed by a robot (robot arm). The above object is further achieved by a slipstream die casting plant, in particular of the above type, comprising a die, as described above.

The above object is further achieved by a method comprising the steps:

- Providing a slip die of the above type and / or a slip die casting of the above type;

Performing a demolding operation, wherein the first molded part is moved in at least two different directions and / or in a direction that is neither parallel nor perpendicular to an adjustment direction of a third molded part, and wherein the second molded part, independently of the adjustment of the first molded part, in at least two different directions and / or in a direction which is neither parallel nor perpendicular to an adjusting device of the third molding, is moved.

Further process characteristics emerge from the above description of the slip die casting mold or the slip die casting plant, in particular the functional features explained there.

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

First and / or second molded part preferably have at least one

Recess, which is preferably designed to form a (undercut) projection within a recess of the casting.

Further embodiments emerge from the subclaims.

The invention will be described with reference to an embodiment which is explained in more detail with reference to the figures. Hereby show: 1 shows a slip-pressure die according to the invention in a view from above and in a Druckgießstellung.

2 shows the die casting mold according to FIG. 1 in a section along the line

A-A;

Fig. 3, the die casting mold of FIG. 1 in a partially demolded

Status;

FIG. 4 shows the die casting mold according to FIG. 3 in a section along the line. FIG

A-A;

5 shows the die casting mold according to FIG. 3 in a section along the line

BB;

Fig. 6, the die casting mold according to FIG. 1 in a further demolded

Status;

Fig. 7, the die casting mold according to FIG. 3 in a section along the line

A-A;

Fig. 8, the die according to FIG. 3 in a section along the line

BB;

9 is a view similar to FIG. 1 another demolding state of

die;

Fig. 10 is a section along A-A in Fig. 6; and

11 is a section along B-B in Fig. 6th

In the following description, the same reference numerals are used for identical and equivalent parts. 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 mold parts 12 to 16 are preferably movable in (respectively) only one direction (and the corresponding opposite direction). Concretely, the fifth and sixth mold parts 14, 15 are movable (only) in the x-direction (see FIG. 2); fourth mold part 13 and seventh mold part 16 (only) in the y-direction; third molding 12 (only) in the z-direction (see Fig. 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 (possibly also in the z direction). Depending on the geometry, a movement as well as a temporal succession of a movement in the x-direction and y-direction as well as a movement with an x-component and a (simultaneous) y-component would be conceivable.

The defined by the mold parts 10 to 17 cavity 18 is filled with a Schlicker- Druckgussmasse 19, which then ultimately defines a casting 20.

The casting 20 is according to the invention preferably a toilet bowl.

The casting 20 in turn has a recess 21, within the

(sections), the first, second and third mold part 10, 11, 12 are arranged (in the position shown in FIG. 1). Furthermore, a projection 22 is formed within the recess 21, which is undercut (with respect to the y-direction). The projection 22 in turn corresponds to corresponding recesses 22a, 22b, 22c and 22d, which are formed on the first mold part 10 and second mold part 11 and together define the projection.

In a first demolding phase, the fourth molded part 13 is now adjusted (in the y direction). The result is shown in FIGS. 3 to 5. As can further be seen, an adjustment of the fourth mold part 13 is necessary to clear the way for the first and second mold part 10, 11 in the y-direction. In a further demolding phase, the third mold part 12 is adjusted (in the z-direction). The result is shown in FIGS. 6 to 8. The adjustment of the third mold part 12 is necessary in order to be able to remove the first and second mold parts 10, 11, since the first and second mold parts 10, 11 are not displaced in the x direction as long as the third mold part is in the position according to FIG. 2 can be (since there the third mold part 12 is in the way) still in the y-direction, as this by the undercut configuration of the cavity 18 (and in particular the

Protrusion 22) is prevented.

Starting from the position in FIGS. 6 to 8, the first and second molded parts (as shown in FIGS. 9 to 11) can now be removed by moving first in the x-direction and then in the y-direction. Depending on

Embodiment of the undercut of the projection 22 (or other

Undercuts) may also be an adjustment direction which has both an x and a y component (simultaneously) or an adjustment (or demolding) process in which a plurality of changes of direction take place and / or (phased ) Rotations of the moldings 10, 11 are performed. For example, an adjustment in the (exclusively) x direction could take place first, then a rotation about an axis in the z direction and then a (translational) adjustment with an x component and a y component.

At first and second molding are (preferably rod-shaped or

rod-like or tubular or tubular) holding devices 10a, 11a, attached or integrated, can be moved over the first and second mold part. Course and arrangement of the holding devices 10a, 11a are shown only schematically. Specifically, the holding devices 10a, 11a can extend between two or more moldings. The holding device 10 a can, for. B. between the mold parts 12, 14, on the one hand, and 13, on the other hand, run. The holding device 11 a can, for. B. between the mold parts 12, 15, on the one hand, and 13, on the other hand, run.

It should be noted at this point that all parts described above, taken alone and in any combination, especially in the

Drawings shown details are claimed as essential to the invention. Variations thereof are familiar to the person skilled in the art. LIST OF REFERENCE NUMBERS

10 first molded part

10a holding device

11 second molding

11a holding device

12 third molding

13 fourth molding

14 fifth molding

15 sixth molding

16 seventh molded part 18 cavity

19 slip casting compound

20 castings

21 recess 22 projection

22a recess 2b recess 2c recess 2d recess

Claims

Schlicker die casting mold and slip die casting plant claims

1. slip die with

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

- Wherein at least two (10, 11) of the molded parts, namely at least a first (10) and a second (11) molding, at least during a demolding operation, respectively, independently, in at least two different directions and / or in one direction, neither parallel still perpendicular to an adjustment of a third

Molded part is, are adjustable.

2. Diecasting mold according to claim 1,

wherein for adjusting the first mold part (10) has a first

Adjusting device, in particular comprising a first robot arm, and / or for adjusting the second molded part (11) a second

Adjustment device, in particular comprising a second robot arm, is provided / are.

3. Die casting mold according to claim 1 or 2,

wherein the first (10) and / or second (11) molded part in the

Druckgießstellung at least partially within a cavity or, a recess (21) of the casting (20) can be arranged or

is arranged, wherein first (20) and second (11) molded part are preferably configured to form a within the cavity or the recess (21) lying projection (22).

4. Die casting mold according to claim 3,

wherein at least one further, namely at least a third (12), molding within the cavity or the recess of the casting is arranged or arranged, wherein the third mold part (12) is optionally adjustable in only one direction.

5. Diecasting mold according to one of the preceding claims, in particular according to claim 4,

wherein the die is configured such that for demolding of the first (10) and / or second (11) molding initially another, in particular the third mold part (12) to be demolded.

6. Die casting mold according to one of the preceding claims,

wherein an optionally exclusive, adjustment direction of the third molded part (12) has at least one z-component, wherein a first

Adjustment of the first mold part (10) has at least one x-component and a second adjustment of the first mold part (10) at least one y-component and / or wherein a first adjustment of the second mold part (11) has at least one x-component and a second adjustment direction of the second molded part (11) has at least one y-component.

7. Die casting mold according to one of the preceding claims,

wherein first (10) and second (11) molded part, at least in phases, are adjustable in mutually opposite directions of adjustment and / or, at least in phases, are adjustable in the same adjustment directions.

8. Diecasting mold according to one of the preceding claims, wherein a first (10) and second (11) molding are simultaneously, temporally overlapping and / or successively movable.

9. Diecasting mold according to one of the preceding claims,

wherein first (10) and / or second (11) molding is rotatable about at least one axis / are.

10. slip die casting plant comprising:

- A receptacle for at least one die according to one of the preceding claims and

- At least one holding and adjusting device for temporarily holding and adjusting the first (10) and / or second (11) molding.

11. slip-die casting plant, in particular according to claim 10,

comprising a die according to one of claims 1 to 9.