WO2011144446A1

WO2011144446A1 - Die cast part of a die casting mold and corresponding die casting device

Info

Publication number: WO2011144446A1
Application number: PCT/EP2011/057121
Authority: WO
Inventors: Ignaz Huber; Johannes Wunder; Michael Günzel; Sebastien Nisslé
Original assignee: Georg Fischer Verwaltungs-Gmbh
Priority date: 2010-05-18
Filing date: 2011-05-04
Publication date: 2011-11-24
Also published as: ES2603079T3; CN103209785B; EP2388086A1; EP2571643A1; US20130160966A1; EP2571643B1; CN103209785A

Abstract

The invention relates to a die cast part (8, 9, 10, 11, 12) of a die casting mold (5, 6, 7), having at least one first component (13, 15, 17, 19, 21) comprising a pressure zone (24, 25, 40, 60), at least one second component (14, 16, 18, 20, 22) and at least one heat exchange chamber (27, 36, 43, 51, 55, 62) permeated by a fluid and formed by the components (13, 14, 15, 16, 17, 18, 19, 20, 21, 22) for controlling the temperature of the pressure zone (24, 25, 40, 60), wherein the first component (13, 15, 17, 19, 21) comprises a heat transfer surface (34, 41, 61) integral to at least one wall of the heat exchange chamber (27, 36, 43, 51, 55, 62) and thermally associated with the pressure zone (24, 25, 40, 60), and the pressure zone (24, 25, 40, 60) bounds at least one part of a casting inlet (59). According to the invention, the second component (14, 16, 18, 20, 22) comprises at least one fluid guiding protrusion (64) protruding into the heat transfer chamber (27, 36, 43, 51, 55, 62) and/or a fluid guiding recess (26, 49) open toward the first component (13, 15, 17, 19, 21), wherein the fluid guiding recess (26, 49) forms at least one portion of the heat exchange chamber (27, 36, 43, 51, 55, 62) and/or the fluid guiding protrusion (64) and/or the fluid guiding recess (24, 49) form or forms a flow contour surface (65) of the second component (14, 16, 18, 20, 22) in particular adapted to the curve of the heat transfer surface (34, 41, 61), and wherein a recess (35, 50, 75, 76) of the first component (13, 15, 17, 19, 21) forms at least regions of the heat exchange chamber (27, 36, 43, 51, 55, 62). The invention further relates to a die casting device (1).

Description

Die casting molding of a die casting mold and corresponding

Diecasting facility

description

The invention relates to a diecasting mold part of a die casting mold, comprising at least one first component comprising a pressure zone, at least one second component and at least one heat exchange chamber through which a fluid flows for the purpose of tempering the pressure zone, wherein the first component comprises at least one wall of the heat exchange chamber , the pressure zone thermally associated heat transfer surface and the pressure zone defines at least a portion of a pouring inlet. The invention further relates to a die casting device.

Such die-casting molds are used for example for Druckgusseinrichtungen for die casting. Die casting is preferably used for casting metal, in particular non-ferrous metals or special materials. In die casting, the molten casting material, the melt, is forced under high pressure at relatively high speed into a casting mold - also referred to as a mold insert. Flow velocities of the melt of 20 to 160 m / s and short shot times of 10 to 100 ms are achieved. The casting mold or die casting mold consists, for example, of metal, preferably of a hardened steel. For die casting, the hot chamber method and the cold chamber method can be differentiated. In the former, the die casting device and a melt holding furnace form one unit. The casting unit which supplies the melt to the casting mold is in the melt; with each casting process is a certain volume of Pressed melt into the mold. In contrast, in the cold chamber method, the die casting device and the melt holding furnace are arranged separately. Only the quantity required for the respective casting is metered into a casting chamber and introduced from there into the casting mold.

The die casting mold consists of at least one die casting molding which has the first and the second component. In this case, the first component has a recess, which represents the heat exchange chamber. The recess or the heat exchange chamber is closed by means of the second component, which is formed in a plate-shaped manner, so as to hold a fluid used for cooling the die-cast part in the heat exchange chamber. Accordingly, the fluid can only be introduced into the heat exchange chamber via an inlet or an inlet valve and discharged out of the heat exchange chamber through an outlet or an outlet valve.

The first component has the pressure zone, which is pressurized by the melt during the casting process. The pressure zone is part of a wall of the heat exchange chamber. Preferably, the same wall belongs to the heat transfer surface, which is associated with the pressure zone thermally. This means that heat between the pressure zone and the heat transfer surface is transferable and consequently the pressure zone is assigned to the heat transfer surface heat transfer. The second component is preferably provided facing away from the printing zone. A similar structure is known for example from DE 35 02 895 A1. In the case of the pressure casting mold described in DE 35 02 895 A1, however, the problem arises that a reliable and uniform temperature control of the pressure zone can not be achieved. For this reason, a cooling of the die casting molding must be dimensioned so that a reliable cooling is given and at the same time the cooling of a diecast component to be produced is not affected by too fast and / or too uneven cooling. From the boundary conditions of sufficient cooling of the die-cast molding and the most uniform cooling of the die-cast component result in comparatively low cycle times in the production of the die-cast component in order to achieve a good durability of the pressure casting in this way. However, this means that only a comparatively low number of die-cast components can be produced per unit of time.

By contrast, it is the object of the invention to present a die-cast molding which does not have the disadvantages mentioned at the outset, but at the same time allows a good cooling characteristic and a high throughput (die cast components per unit time).

This is inventively achieved with a die-cast molding with the features of claim 1. It is provided that the second component has at least one projecting into the heat exchange chamber Fluidleitvorsprung and / or open to the first component Fluidleitvertiefung, the Fluidleitvertiefung forms at least a portion of the heat exchange chamber and / or the Fluidleitvorsprung and / or Fluidleitvertiefung a , in particular to the course of the heat transfer surface form adapted flow contour surface of the second component / forms, and wherein a recess of the first component forms the heat exchange chamber at least partially. First, therefore, the second component should have the Fluidleitvorsprung or the Fluidleitvertiefung. Both the Fluidleitvorsprung and the Fluidleitvertiefung point in the direction of the first component. This means that the Fluidleitvorsprung protrudes into the heat exchange chamber and the Fluidleitvertiefung is formed open to the first component. In this case, the Fluidleitvertiefung should form at least a portion of the heat exchange chamber, so that the Fluidleitvertiefung can be flowed through by the fluid, which is used for controlling the temperature of the pressure zone or the heat transfer surface.

By introducing the fluid adjusted to a certain temperature into the heat exchange chamber, the temperature of the pressure zone can be set at least approximately controlling and / or regulating. For this purpose, at least one temperature sensor may be provided on or in the die casting molding, with which the temperature of the pressure zone is at least approximately determinable. On the basis of this specific temperature, the temperature and / or the throughput {volume or mass per unit time) of the fluid can then be selected or set. The fluid flows through the heat exchange chamber and flows over the heat transfer surface. Because this is associated with the thermal or heat transfer the pressure zone, takes place in this way a temperature of the pressure zone. Usually, the temperature of the fluid is significantly smaller than the temperature of the pressure zone or the die casting molding, so that the diecast component to be produced cools down as quickly as possible and the diecasting device can be removed. In contrast to known from the prior art die-cast moldings here, therefore, the heat exchange chamber is at least partially formed in the second component, which allows a more reliable loading of the heat transfer surface with the fluid and thus a better cooling or faster cooling of the die-cast molding.

Alternatively or additionally, the Fluidleitvorsprung and / or the Fluidleitvertiefung form the flow contour surface. This is provided on the second component. By flow contour surface is meant a non-planar surface contour. The flow of the heat transfer surface with the fluid can thus be improved with the passage of the second component, which is thus predominant, or fluid can be applied to specific areas of the heat transfer surface. Also in this way the better cooling characteristics or the faster cooling can be achieved. Preferably, the flow contour surface should be adapted to the course of the heat transfer surface. For example, the flow contour surface and the heat transfer surface may extend parallel to one another at least in regions. In this way, the fluid is guided in such a way that areas of the heat transfer surface can be specifically acted upon by the fluid.

For example, this is provided for areas of the heat transfer surface, which correspond to thermally particularly highly stressed areas of the print zone. Alternatively, only lent the heat transfer surface or the heat transfer surface and the second component have such a contouring. Preferably, the heat transfer surface and / or the second component are contoured such that the most uniform possible cooling of the diecast component to be produced is achieved. In this way, stresses in the material of the die-cast component are avoided, thus achieving high stability.

Furthermore, a depression of the first component should at least partially form the heat exchange chamber. The heat exchange chamber may be formed entirely by the recess of the first component, in which case the fluid guide projection of the second component projects into the recess. Alternatively, both the recess of the first component and the Fiuidleitvertiefung of the second component may be provided and the heat exchange came mer together form.

It should be expressly mentioned at this point that the die-cast molding can be used both for the hot chamber method and for the cold chamber method and for any material compositions of the melt. An advantageous development provides that the flow contour surface has at least one of the Fluidleitvorsprung and / or the Fiuidleitvertiefung formed with convex and / or concave area. The flow contour surface can in principle be shaped as desired. In this case, however, it preferably has convex or concave regions in which the flow contour surface runs continuously, that is to say it has no cracks or shoulders. Are multiple convex and / or concave areas provided, the transition between these preferably also runs steadily. Due to the continuous flow contour surface, the heat exchange chamber can be designed to be flow-favorable, that is, to oppose the fluid flowing through it with a comparatively low flow resistance. Furthermore, the occurrence of vortices and / or backflows is reduced, so that a reliable overflow of the heat transfer surface is given to the fluid.

The convex or concave regions can be formed at least by the fluid-conducting projection and / or the fluid-conducting recess. This means that the Fluidleitvorsprung or the Fluidleitvertiefung at least partially have a convex and / or concave surface. The Fluidleitvorsprung or the Fiuidleitver- recess can also be used as so-called turbulators, in order in this way to increase the heat transfer from the heat transfer fluid to the fluid.

A further embodiment of the invention provides that the contour of the heat transfer surface is at least partially approximated to one, in particular three-dimensional contour of the print zone or corresponds to it. This can be achieved for example by a uniform wall thickness of the wall, which are assigned to both the pressure zone and the heat transfer surface on opposite sides. Alternatively, a desired choice of wall thickness, however, can also be used to achieve a desired rate of heat dissipation or to be specifically set for specific areas. For example, it can be provided that the wall thickness of the wall in Strömungsrich- tion of the fluid decreases, as the fluid warms up when flowing through and thus decreases its cooling effect on the heat transfer surface or the pressure zone. To compensate for this, it may be necessary to increase the thermal conductivity of the wall, which is usually achieved by a smaller wall thickness.

In a preferred embodiment, it is provided that the flow contour surface extends to the heat transfer surface in such a way that over the flow path of the fluid lying in the heat exchange chamber there is at least zonally an approximately constant flow cross section for the fluid. Accordingly, the flow contour surface extends, at least in part, largely parallel to the heat transfer surface. This achieves the constant flow cross section for the fluid. Such an embodiment has the advantage that the occurrence of vortices and / or backflows is reduced, which preferably occur in areas in which the flow cross section for the fluid changes too much or too fast.

A development of the invention provides that the heat exchange chamber is fluid-connected to at least one fluid connection, in particular a fluid connection. In order to supply and / or remove fluid from the heat exchange chamber, the fluid connection is provided, with which the heat exchange chamber is fluid-connected. Preferably, the heat exchange chamber associated with two fluid ports, wherein the fluid of the heat exchange chamber can be supplied through one of the fluid ports and discharged through the other from the heat exchange chamber. The fluid connections can be at least partially as - example- wise piping similar trained - Fluidieitung be formed.

An advantageous embodiment of the invention provides that the Fluidieitung is at least partially provided in the first component and / or the second component. The Fluidieitung thus runs partially through the first and / or second component. For example, the Fluidieitung is provided as a bore and thus forms a Fluidzuführbohrung or a Fluidabführbohrung. If a plurality of fluid connections or fluid conduits mouth into the heat exchange chamber, they are preferably arranged clearly spaced from one another, in particular if fluid is supplied to the heat exchange chamber by means of the one fluid connection and fluid is removed by means of the other fluid connection. In this case, an arrangement of the openings of the fluid flows or fluid lines of the heat exchange chamber is preferred on opposite sides of the heat exchange chamber, viewed in the direction of flow.

A further embodiment of the invention provides that the first component or the second component has a receptacle, in which the second component or the first component at least partially, in particular completely, can be used. After insertion of the first or second component into the receptacle, the latter is preferably encompassed by the respective other component in such a way that it is fixed at least in the lateral direction, ie no slippage of the one component with respect to the other component in this direction is possible. For supporting the one component in the vertical direction may be provided on the other component, a support surface in the region of the receptacle. This contact surface is zugt formed as a support web, which extends in an outer region of the receptacle to further areas of the exception around. The bearing surface can cooperate to achieve a sealing effect between the one and the other component with a mating surface of a component.

It can be provided that the first component is releasably connected to the second component, in particular by means of a screw connection. It is provided that the first component is formed separately from the second component. Subsequently, the at least two components are assembled to the Druckgussformteii and releasably connected to each other, wherein the heat exchange chamber is formed. The detachable connection can in principle be made arbitrarily. However, a screw connection with at least one screw or a threaded bolt is preferred.

Additionally or alternatively, the first and / or the second component may have at least one sensor receptacle for a temperature sensor. The temperature sensor serves to determine the temperature of the first or the second component at least approximately. On the basis of the specific temperature, a temperature control of the fluid or an adjustment of a fluid throughput can be carried out in a controlling and / or regulating manner. Preferably, the sensor receptacle is arranged such that the temperature sensor can at least approximately detect the temperature of the pressure zone or of the pressure region of the first or of the second component. It is also vorstelibar that between the first and the second component, a heat exchange chamber sealing seal is provided. In order to prevent an unforeseen leakage of the fluid from the heat exchange chamber, this is associated with the seal. The seal can be designed for example as an O-ring and embrace the heat exchange chamber in the circumferential direction substantially. An exchange of the fluid located in the heat exchange chamber is of course also possible by means of the fluid connection or the fluid line. The invention further relates to a Druckgusseinrtchtung, with at least one die casting molding, in particular according to the preceding embodiments, wherein the die casting molding is part of a die and over at least one pressure zone exhibiting first component, at least one second component and at least one of the components formed by a fluid-flow-through heat exchange chamber for controlling the temperature of the pressure zone, wherein the first component has at least one wall of the heat exchange chamber belonging to the pressure zone thermally associated heat transfer surface and the pressure zone defines at least a portion of a pouring inlet. It is provided that the second component has at least one projecting into the heat exchange chamber Fluidleitvorsprung and / or open to the first component Fluidleitvertiefung, the Fluidleitvertiefung forms at least a portion of the heat exchange chamber and / or the Fluidleitvorsprung and / or Fluidleitvertiefung a form, in particular on the course of the heat transfer surface adapted flow contour surface of the second component / forms and wherein a recess of the first component forms the heat exchange chamber at least partially. The Die casting device is for example a die casting machine and is therefore designed for the production of die-cast components. In addition to further, generally known elements, it has at least one die-cast part, which is designed or developed according to the above explanations.

An advantageous embodiment of the invention provides that in each case at least one die casting mold form a casting mold unit, a runner unit and / or a casting inlet unit of the diecasting device, wherein the casting mold unit has a casting mold, the gate unit has a casting area and the casting inlet unit has the casting inlet. In this case, the casting mold, the sprue area and the pouring inlet are respectively delimited, at least in regions, by the pressure zones of the first components of the die cast molding of the die casting mold. In the casting mold unit, the casting mold is provided, into which the melt is introduced and from which the die cast component can subsequently be removed. The feeding of the melt takes place via the gate unit and / or the pouring inlet unit. Usually, the mold unit and the Angusseinheit consist of at least two die-cast moldings, while the Gießeinlasseinheit only has at least one die-cast molding.

A development of the invention provides that the casting mold, the sprue area and / or pouring inlet for flowing through with a Gießmateria! fluidly connected to each other. The liquid or molten casting material is also referred to as a melt. As already stated above, the supply of the casting material to the casting mold takes place via the sprue area or the casting inlet. Accordingly, the fluid connection must be provided between the mold, the sprue area or the pouring inlet. The casting mold, the sprue area and the casting inlet thus represent casting areas through which the melt or the casting material can flow. According to a development of the invention, it is provided that the heat exchange chambers of the casting mold unit, the runner unit and / or the pouring unit, in particular via at least one passage or at least one line, are fluidly connected to each other for flowing through with the fluid. Both the Gießform- unit, the Angusseinheit, and the Gießeinlasseinheit can each consist of a die-casting mold, which in turn has at least two die-cast moldings. Accordingly, the mold unit, the gate unit and the pouring inlet unit each have a heat exchange chamber. These heat exchange chambers should be connected to each other in such a way that they can be flowed through together by the fluid.

In this way it can be provided, for example, that the heat exchange chamber of the casting mold unit have a fluid supply connection for supplying the fluid and the pouring inlet unit have a fluid outlet connection for removing the fluid from the die casting device. Accordingly, the fluid supplied through the fluid supply port first flows through the casting mold unit, then the gate unit and subsequently the pouring unit and then exits the die casting device through the fluid outlet port. Alternatively, it may of course be provided that the heat exchange chambers of the casting mold unit, the runner unit and / or the pouring unit each have separate fluid connections. Finally, it is provided that the heat exchange chambers of the casting mold unit, the runner unit and / or the pouring inlet unit are connected to at least one common Fiuidanschluss. In this way, it is possible, as already stated above, to simultaneously supply the fluid to both the mold unit, the gate unit and the pouring inlet unit, without having to provide separate fluid connections in each case. In this way, the design effort for the die-cast device or the respective die-cast molding can be reduced. Likewise, the mold unit, Angusseinheit and Gießeinlasseinheit be individually controlled or controlled.

The invention will be explained in more detail below with reference to the embodiments illustrated in the drawing, without any limitation of the invention. 1 shows an exploded view of a die casting device with a casting unit, a gate unit and a casting inlet unit, wherein these each have a die casting mold consisting of two die casting mold parts, FIG. 2 is a side sectional view of the die casting device,

3 shows a die-cast molding of the casting inlet unit, with a first and a second component.

FIG. 4 shows the die casting molding of the casting inlet unit in one

Sectional view showing a horizontal section, FIG. 5 is a bottom view of the first component of the die-cast molding known from FIGS. 3 and 4, with a heat exchange chamber formed in the first component exposed, and FIG. 6 shows the die-cast molding of the casting inlet unit in one

View from below, wherein the heat exchange chamber of the first component is closed by means of the second component.

FIG. 1 shows a die casting device 1, for example a die casting machine or a part thereof. The die casting device 1 is used to produce one or more die-cast components (not shown). It has a mold unit 2, a runner unit 3 and a pouring inlet unit 4. The mold unit 2 consists of a first die-casting mold 5, the runner unit 3 of a second die-casting mold 6 and the pouring inlet unit 4 of a third die-casting mold 7. The first die casting mold 5 settles two die-cast mold parts 8 and 9 and the second die-casting mold of die-cast moldings 10 and 11 together. The third die casting mold 7 consists of a die casting molding part 12. The die casting molding part 8 has a first component 13 and a second component 14. Similarly, the die casting mold parts 9 to 12 first components 15, 17, 19 and 21 and second components 16, 18, 20 and 22 are assigned.

In the following, the die casting mold parts 8 and 9 of the casting mold unit 2 will first be discussed in greater detail. The casting mold unit 2 has a casting mold 23 which is present at least in regions between pressure zones 24 and 25 of the first components 13 and 15. The casting mold 23 essentially has a shape which represents a negative of a die-cast component to be produced. In a casting operation carried out with the die-casting device 1, casting material or melt is accordingly introduced into the casting mold 23 between the pressure zones 24 and 25, and after cooling and solidification of the melt, the die-cast component is removed from the casting mold 23. For this purpose, the die casting molding 8 and / or the die casting molding 9 in the vertical direction of the other die casting molding 9 or 8 fortverla- rerable. Accordingly, a corresponding displacement device is provided for this purpose.

Basically, the die-cast moldings 8 and 9 have a similar structure, so that at first only the diecasting mold part 8 is described and only the differences from the die cast mold part 9 are pointed out. The second component 14 of the die-cast molding 8 has a Fluidleitvertiefung 26, which forms a heat exchange chamber 27 of the die-cast molding 8 completely. For this reason, the first component 13 is designed to be flat or plate-shaped and is arranged on the second component 4 such that it closes the heat exchange chamber 27 or the fluid-conducting recess 26. The Fluidleitvertiefung 26 is formed like a trough in the second component 14. This means that the second component 14 closes the fluid-conducting recess 26 with the exception of the opening 28 facing the first component 13. For receiving the first component 13, the second component 14 has a receptacle 29, which is designed such that the second component 14 can completely accommodate the first component 13. In this case, the pressure zone 24 of the first component 13 is substantially on a plane with sealing surfaces 30 which cooperate with corresponding sealing surfaces (not shown here) of the die-cast molding 9 in order to seal the casting mold 23 with respect to an environment of the die-cast device 1 during the casting process. In the receptacle 29, a bearing surface 31 is provided, which serves as circumferential support web is formed and a support of the first component 13 in the receptacle 29 is used.

Two fluid inlet connections 32 and two fluid outlet connections 33 open into the heat exchange chamber 27, of which only one is shown visibly. The fluid inlet connections 32 and the fluid outlet connections 33, as fluid inlet lines or fluid outlet lines, pass through the walls delimiting the heat exchange chamber 27 in order to allow the heat exchange chamber 27 to be supplied with a fluid. In this case, the fluid can be supplied through the fluid inlet ports 32 of the heat exchange chamber 27 and discharged through the Fluidauslassanschlüsse 33. The assignment shown here is to be understood as purely exemplary. Thus, the fluid inlet ports 32 and the fluid outlet ports 33 can each be interchanged, so that the heat exchange chamber 27 can be traversed in different directions by the fluid. Opposite of the pressure zone 24, a heat transfer surface 34 is arranged, which is overflowed with the present in the heat exchange chamber 27 fluid. The heat transfer surface 34 in this case belongs to a wall of the heat exchange chamber 27, preferably the same wall as the pressure zone 24.

The die casting mold part 8 directly opposite die casting molding 9 differs from the former in the Substantially in that the first component 15 here has a recess 35, which forms a heat exchange chamber 36 of the die-cast molding 9 at least partially with. Furthermore, the second component 16 of the die casting mold part 9 has only one fluid inlet flange 37.

The statements made above for the die cast parts 8 and 9 can essentially be transferred to the die cast parts 10 and 11. Nevertheless, it will be briefly discussed below. Die casting moldings 10 and 11 are components of the sprue unit 3, in which there is a sprue area 38 or is delimited by the first components 17 and 19. The sprue 38 is in this case in the first components 17 and 19 incorporated flow channels 39 before (here only for the first component 17 indicated). In the flow channels 39 is also a pressure zone 40 of the Angusseinheit 3 ago.

Opposite the pressure zone 40, a heat transfer surface 41 is provided on the first component 17. Is the first component

17 in a provided receptacle 42 of the second component

Arranged 18, the heat transfer surface 41 together with the second component 18 defines a heat exchange chamber 43 of the

Druckgussformteiis 10. in the receptacle 42 is a Auflagefiäche 44 is provided, which is designed as a circumferential support web. The receptacle 42 is designed such that the second component 18 can completely accommodate the first component 17 so that sealing surfaces 45 of the first component 17 are aligned with sealing surfaces 46 of the second component 18 and with sealing surfaces of the first component 19 and of the first component 17, not shown here second component 20 for sealing the Gating area 38 cooperate with respect to an environment of the die casting device 1.

In the second component 18, at least one fluid inlet port 47 and one fluid outlet port 48 are provided, which open into the heat exchange chamber 43. The heat exchange chamber 43 is also formed here as a Fluidleitvertiefung 49.

The directly opposite the die casting molding 10 provided die-cast molding 11 is constructed analogously to this. In this respect, statements made for the diecast part 10 are readily transferable to the diecast part 11 and vice versa. FIG. 1 shows that the first component 19 of the die casting molding 1 has a depression 50. If the first component 19 is arranged in the second component 20, then this recess 50 serves to form a heat exchange chamber 51. The second component 20 has a fluid inlet connection 52 and a fluid outlet connection 53, analogously to the second component 18 of the pressure casting molding element 10.

FIG. 1 further shows the casting inlet unit 4 with the third die casting mold 7. The casting inlet unit 4 is assigned a cooling ring 54, which has a heat exchange chamber 55 which can be closed by a displacement plate 56. The cooling ring 54 in this case has a central opening 57, in which a Gießmaterialleitfortsatz 58 of the first member 21 of the Druckgussformteiis 12 engages. On the Gießmaterialleitfortsatz 58 a Strömungskanai is formed as Gießein- lass 59, which also extends over other areas of the first member 21 up to the Angusseinheit 3. Along this pouring inlet 59 melted Gießmatena! (Melt) flow to pass through the Angusseinheit 3 in the mold unit 2. In the Strömungskana! 59 is so far also a pressure zone 60 before. With reference to a wall of the first component 21, it is opposite a heat transfer surface 61 (not recognizable here). This heat transfer surface 61 is present in a heat exchange chamber 62, which is formed by a recess 63 of the first component 21.

The heat exchange chamber 62 is opened in the direction of the second component 22. The second component 22 serves to close the heat exchange chamber 62 or the recess 63. The second component 22 has a Fluidleitvorsprung 64, which projects into the heat exchange chamber 62. The fluid guide projection 64 forms a flow contour surface 65 of the second component 22. The flow contour surface 65 is a non-planar surface contour and has a concave region 66. The concave portion 66 is formed by the Fluidleitvorsprung 64 with. To the heat exchange chamber 62 of the die casting 12, both a fluid inlet port 67 and a fluid outlet port 68 are connected. However, this is not apparent in FIG. The pressure casting device 1 shown in FIG. 1 is used to produce cast components from casting material, which is in the form of the melt. To produce the die-cast component, the die-cast parts 8 and 10 and the die-cast part 9 and 11 are moved toward one another so that the casting mold 23 or the sprue area 38 is sealed. Subsequently, the pressurized melt is supplied through the opening 57 of the pouring unit 4, which runs along the pouring inlet 59 in the direction of the Angusseinheit 3 and in the sprue area 38th or the flow channels 39 flows in. The flow channels 39 provide for a fanning out of the stream of melt, so that the casting mold 23 can be fed to the melt in different positions as seen in the lateral direction. The casting inlet unit 4 is supplied with melt until the casting mold 23 is filled.

Subsequently, the melt is cooled, for which purpose fluid is introduced into the heat exchange chambers 27, 36, 43, 51, 55 and 62. The temperature of the fluid or its mass flow is chosen such that the best possible cooling characteristic of the Druckgussbauteiis is present. For this purpose, it is particularly necessary to cool this as evenly as possible in order to ensure a sufficiently high stability of the die-cast component.

After solidification or cooling of the melt, the die-cast mold parts 8 and 10 and the die-cast mold parts 9 and 1 are displaced away from each other so that the casting mold 23 and the sprue area 38 are released. Likewise, the cooling ring 24 is removed from the casting inlet unit 4. Subsequently, the produced die cast component together with the sprue remaining in the sprue area 38 and the casting material of the die casting device 1 remaining in the area of the casting inlet unit 4 can be removed. As part of a post-processing of the sprue is removed from the die-cast component and preferably remelted. FIG. 2 shows a sectional view of the die-cast device 1, showing an arrangement of the die-cast parts 8 to 12 which is present during the casting process. Die casting moldings 8 and 9 and the die-cast moldings 10 and thus are in each case sealingly against each other. It becomes clear that the casting mold 23 is not limited only by the pressure zone 24 of the die-cast molding 8 and an unspecified pressure zone of the die-cast molding 9, but that the second components 14 and 16 each have a pressure range 69 and 70, respectively, which defines the casting mold Co-define 23. In this case, the pressure region 69 terminates substantially pian with the pressure zone 24 and the pressure region 70 with the pressure zone 25 of the first component 15 of the die-cast molding 9. It can again be seen that the first components 13 and 15 are each completely accommodated in the second components 14 and 16, for which purpose the receptacle 29 is provided in the case of the die-cast molding 8.

It can also be seen that the components 13 and 14 and 15 and 16, as well as 17 and 18 and 19 and 20 are each held together by means of a screw 71. Each screw 71 has at least one screw 72. It can also be seen that in each case a sensor receptacle 73 is provided in the second components 14 and 16, in which a temperature sensor, not shown here, can be arranged. By means of this temperature sensor, the temperature of the second components 14 and 16 or at least approximately the temperature of the pressure zones 24 and 25 can be determined. On the basis of this specific temperature, the temperature of the fluid or its mass flow is then adjusted in a controlling and / or regulating manner. In this way, the present in the Druckgusseänrichtung 1 melt can be cooled quickly and selectively to a certain temperature. Between the components 13 and 14, 15 and 16, 17 and 18, 19 and 20 and 21 and 22 is a respective seal 74th provided, which surrounds the entire, respectively associated heat exchange chamber 27, 36, 43, 51 or 62. Thus, in each case a high fluid pressure can be applied in the heat exchange chambers 27, 36, 43, 51 and 62 without the fluid being able to escape from them inadvertently.

FIG. 2 again makes it clear that the heat exchange chamber 27 of the die-cast molding 8 can only be formed by the fluid-conducting recess 26 of the second component 14. In contrast, the heat exchange chambers 36, 43 are each formed by the recesses 35 and 50 of the first components 15 and 19 and a recess 75 of the first component 17 with. It is nevertheless clear that the die-cast parts 8, 9, 10 and 11 are basically of similar construction, while the die-cast part 12 has a structurally different construction. In this protrudes, as already described above, the Fluidleitvorsprung 24 in the heat exchange chamber 62, which is formed by the recess 63 in the first component 21. In this case, it is additionally provided that the contour of the heat transfer surface 61 is adapted to the contour of the print zone 60 at least in regions. In part, the flow contour surface extends in such a way to the heat transfer surface 61, that at least zonal an approximately constant large flow cross section for the fluid is formed.

FIG. 3 shows the casting outlet unit 4, comprising the first component 21 and the second component 22. The first component 21 has the casting material guide extension 58, in which the casting inlet 59 and the pressure zone 60 are present in regions. However, both continue in a bottom region of the first component 21 in the direction of the gating unit 3. FIG. 4 shows a sectional view of the pouring unit 4, comprising the first component 21 and the second component 22. In order to clarify the structure of the pouring inlet unit 4, a stream 81 of melt is shown. This is in the region of the pressure zone 60 before. Relative to the wall assigned to the pressure area 60, the heat transfer area 61 is located opposite this wall. This limits the heat exchange chamber 62, which corresponds to the Fiuidein- lassanschluss 67 and the Fluidauslassanschluss 68. Fluid flowing in through the fluid inlet connection 67 thus flows through the heat exchange chamber 62 as far as the fluid outlet connection 68. The heat transfer surface 61 and thus also the pressure zone 60 are cooled by the fluid.

It is indicated here that one of the seals 74 is also provided between the first component 21 and the second component 22. The fluid inlet connection 67 is designed in such a way that fluid flowing into it from the heat exchange chamber 62 initially strikes a Umienkbereich 82, which is formed by the wall of the first member 21 at the highest point of the heat exchange chamber 62. The deflection region 82 causes a deflection of the fluid, so that it flows in the direction of the Fluidauslassanschius 68.

FIG. 4 makes it clear that the flow contour surface 65 of the second component extends in such a way to the heat transfer surface 61 that a substantially constant flow cross section is given for the fluid. For this purpose, the flow contour surface 65 runs at least in regions parallel to the heat transfer surface 61. The second component 22 is arranged on the first component 21 in such a way that it closes the heat exchange chamber 62. For this purpose, the heat exchange chamber 62 is remote from the pressure zone 60 Side of the first component 21 provided with an opening and the second component 22 for closing the same arranged in this opening.

FIG. 5 shows a view of the first component 21 from below. Because the second component 22 is not shown, a view through the opening into the heat exchange chamber 62 is possible. It becomes clear that here the first component 21 provides a bearing surface 83 for the second component 22. In the bearing surface 83 is also the seal 74, which is arranged for sealing the heat exchange chamber 62 between the first component 21 and the second component 22.

In addition to bores 79, which are arranged for producing the screw connection 71 between the components 21 and 22, FIG. 5 also shows a further sensor receptacle 73. In this arrangement, a temperature sensor can be arranged to match the temperature of the first component 21 or the pouring inlet unit 4 to determine at least approximately.

It can also be seen in FIG. 5 that the heat transfer surface 61 has a three-dimensional contour. In this case, the concave profile of the heat transfer surface 61 shown in FIG. 4 is present only in a vertical sectional area (starting from the line 84). In the lateral direction, which is perpendicular to the sectional plane, a course of the heat transfer surface 61 deviating from this concave profile may be present. The heat transfer surface 61 is preferably contoured such that the most uniform possible cooling of the melt takes place through the fluid in the heat exchange chamber 62. In principle, however, the heat transfer surface 61 can be configured as desired be and, for example, be designed so as to ensure the simplest possible manufacturability of the first component 21.

FIG. 6 shows a view of the first component 21 from below, wherein the opening of the heat exchange chamber 62 (not visible here) is closed with the second component 22. A receptacle 85, which has the first component 21 for the second component 22, may, but need not, be completely filled by the second component 22. In the illustrated example, the second component 22 in the region of a portion of the holes 79 recesses, so that the receptacle 85 is not completely filled by the second component 22. However, it is advantageous if the receptacle 85 is configured in principle such that the second component 22 is completely received in the receptacle 85 at least in the vertical direction. This means that a depth of the receptacle 85 essentially corresponds to a wall thickness of the second component 22 in the region of the support surface 83, so that the components 21 and 22 form with their bottom surfaces a substantially planar surface.

With the pressure casting device 1 or the die casting moldings 8 to 12 presented here, a good flow through the heat exchange chambers 27, 36, 43, 51 and 62 and thus a high heat exchange or good cooling of the casting mold 23, the sprue area 38 and the pouring inlet 59 can be achieved. In this way, the solidification time of the Druckgussbauteiis to be produced can be reduced and at the same time a homogeneous cooling of the same can be achieved. Accordingly, a substantially homogeneous temperature profile is present in the areas to be cooled at all times. In particular, in the area of the mold 23 is the Design of the die-cast parts 8 and 9 used an FEM process.

The fluid used for cooling may be either gaseous or liquid. By targeted design of the heat exchange chambers 27, 36, 51, 55 and 62, the effectiveness of the temperature control or cooling can be increased. For this purpose, for example, in the die-cast parts 8, 9, 10 and 11 Fluidleitvorsprünge provided in the sense of the die-cast molding 12, which protrude into the respective heat exchange chamber 27, 36, 43, 51 or 55. Such Fluidleitvorsprünge serve insofar as turbulators, for example, to generate turbulence and thus to increase the heat transfer.

Claims

claims

1. die-casting molding (8, 9, 10, 11, 12) of a die-casting mold (5, 6, 7), having at least one first component (13, 15, 17, 19) having a pressure zone (24, 25, 40, 60) 21), at least one second component (14,16,18,20,22) and at least one of the components (13,14,15,16,17,18,19,20,21, 22) formed by a fluid flow through the heat exchange chamber (27,36,43,51, 55,62) for temperature control of the pressure zone (24,25,40,60), wherein the first component (13,15,17,19,21) at least one wall of the heat exchange chamber (27,36,43,51, 55,62) belonging to the pressure zone (24,25,40,60) thermally associated heat transfer surface (34,41, 61) and the pressure zone (24,25,40,60) at least delimiting a part of a casting inlet (59), characterized in that a) the second component (14, 16, 18, 20, 22) projects at least one into the heat exchange chamber (27, 36, 43, 51, 55, 62) Fluidleitvorsprung (64) and / or b) an open to the first component (13,15,17,19,21) formed Fluidleitvertiefu ng (26,49), wherein c) the Fluidleitvertiefung (26,49) at least a portion of the heat exchange chamber (27,36,43,51, 62) forms and / or d) the Fluidleitvorsprung (64) and / or the Fluidleitvertiefung (26,49) a, in particular to the course of the heat transfer surface (34,41, 61) adapted flow contour surface (65) of the second component (14,16,18,20,22 ), and wherein e) a recess (35,50,75) of the first component (13,15,17,19,21) the heat exchange chamber (27,36,43,51, 55, 62) at least partially formed ,

2. Die casting molding according to claim 1, marked thereby, that the flow contour surface (65) at least one of the

Fluidleitvorsprung (64) and / or the Fluidleitvertiefung (26,49) with-vaulted convex and / or concave portion (66).

3. Die casting molding according to one of the preceding claims, characterized in that the contour of the heat transfer surface (34,41, 61) at least partially to one, in particular three-dimensional contour of the print zone (24,25,40,60) approximates or corresponds to it ,

4. Diecasting molding according to one of the preceding claims, characterized in that the flow contour surface (25) to the heat transfer surface (34,41, 61) extends in such a way that in the heat exchange chamber (27,36,43,51, 55,62) lying at least zonal an approximately constant large flow cross section for the fluid is present.

5. Die casting molding according to one of the preceding claims, characterized in that the heat exchange chamber (27,36,43,51, 55,62) with at least one, in particular designed as a fluid line, fluid connection (32,33,37,47,48,52,53,67,68) is fiuidverbunden.

6. die casting molding according to one of the preceding claims che, characterized in that the fluid line at least partially in the first component (13,15,17,19,21) and / or the second component (14,16,18,20,22 ) is provided.

7. Diecasting molding according to one of the preceding claims, characterized in that the first component (13,15,17,19,21) or the second component (14,16,18,20,22) has a receptacle (29,42,85 ), in which the second component (14,16,18,20,22) or the first component (13,15,17,19,21) at least partially, in particular completely, can be used.

8. Die casting device (1), with at least one die-cast formed! (8,9,10,11, 12), in particular according to one or more of the preceding claims, wherein the die-cast molding (8,9,10,11, 12) is part of a die-casting mold (5,6,7) and at least one a first component (13, 15, 17, 19, 21) having a pressure zone (24, 25, 40, 60), at least one second component (14, 16, 18, 20, 22) and at least one of the components (13, 14,15,16,17,18,19,20, 21, 22) formed by a fluid heat exchangeable heat exchange chamber (27,36,43,51, 62) for controlling the temperature of the pressure zone (24,25,40,60) has in which the first component (13, 15, 17, 19, 21) comprises a heat transfer surface (22) belonging to at least one wall of the heat exchange chamber (27, 36, 43, 51, 62) and thermally associated with the pressure zone (24, 25, 40, 60) ( 34, 41, 61) and the pressure zone (24, 25, 40, 60) delimits at least part of a pouring inlet (59), characterized in that a) the second component (14, 16, 18, 20, 22) carries at least one into the heat exchange chamber (27, 36, 43, 51, 55, 62), and / or b) has a fluid-conducting recess (26, 49) open towards the first component (13, 15, 17, 19, 21), wherein c) the Fluidleitvertiefung (26,49) at least a portion of the heat exchange chamber (27,36,43,51, 62) forms and / or d) the Fluidleitvorsprung (64) and / or the Fluidleitvertiefung (26,49) one, in particular to the course of Heat transfer surface (34,41,61) adapted flow contour surface (65) of the second component (14,16,18,20,22) form / forms, and wherein e) a recess (35,50,75,76) of the first component ( 13, 15, 17, 19, 21) forms the heat exchange chamber (27, 36, 43, 51, 55, 62) at least in regions.

9. Die casting device according to claim 8, characterized in that in each case at least one die casting mold (8, 9, 10, 11, 12) has a casting mold unit (2), a gate unit (3) and / or a casting inlet unit (4) of the die casting device ( 1), wherein the casting mold unit (2) has a casting mold (23), the Casting unit (3) have a sprue overhang (38) and the casting inlet unit (4) the pouring inlet (59).

10. Die casting device according to one of the preceding claims, characterized in that the casting mold (23), the sprue area (38) and / or the pouring inlet (59) are fluidly connected to each other for flowing through a casting material.

11. Die casting device according to one of the preceding claims, characterized in that the heat exchange chambers (27,36,43,51, 55,62) of the mold unit (2), the Angusseinheit (3) and / or the Gießeinlasseinheit (4), in particular via at least one passage or at least one conduit, are fluidly connected to each other for flowing through the fluid.

12. die casting device according to one of the preceding claims, characterized in that the heat exchange chambers (27,36,43,51, 55,62) of the mold unit (2), the Angusseinheit (3) and / or the casting inlet unit (4) connected to at least one common fluid connection.