Abstract:
A temperature control device ( 14 ) for a diecasting device ( 1 ), having a first component ( 16 ), a second component ( 17 ), and at least one fluid channel ( 29 ) implemented in the first component ( 16 ) and/or the second component ( 17 ), the first component ( 16 ) and/or the second component ( 17 ) comprise at least one receptacle ( 18 ) for a region ( 27 ) of the diecasting device ( 1 ) on which a casting material can act, in particular a casting inlet ( 21 ), and the fluid channel ( 29 ) opens into at least one heat exchange chamber ( 15 ) present as an open-edged recess ( 23 ) at least in regions of the first component ( 16 ) and lockable with the second component ( 17 ). The invention further relates to a diecasting device ( 1 ).

Description:
BACKGROUND OF THE INVENTION 
       [0001]    The invention relates to a temperature control device for a diecasting apparatus. The invention relates, furthermore, to a diecasting apparatus. 
         [0002]    Temperature control devices for diecasting apparatuses are known from the prior art. The diecasting apparatus serves in this case for diecasting. Diecasting is preferably used for the casting of metal, in particular nonferrous metals or high-strength hot-work steels, or special materials. In diecasting, the molten casting material, the melt, is pressed under high pressure, at relatively high speed, into a casting mold, also designated as a mold insert. In this case, flow velocities of the melt of 20 to 160 m/s and short shoot times for introduction of 10 to 100 ms are achieved. The casting mold or diecasting mold in this case is composed, for example, of metal, preferably of a hot-work steel. For diecasting, a distinction may be made between the hot-chamber method and the cold-chamber method. In the former, the diecasting apparatus and a holding furnace for the melt form a unit. The casting assembly, which feeds the melt to the casting mold, is located in the melt; during each casting operation, a specific volume of the melt is pressed into the casting mold. By contrast, in the cold-chamber method, the diecasting apparatus and the holding furnace for the melt are arranged separately. Only the quantity required for the respective casting is metered into a casting chamber and is introduced from there into the casting mold. 
         [0003]    For the temperature control, in particular cooling, of at least one region of the diecasting apparatus, the temperature control device is employed. This may be used, in particular, to control the temperature of a region of the diecasting apparatus which can be acted upon by a casting material. Such a region is, for example, a casting inlet of the diecasting apparatus, along or through which casting inlet the casting material passes in the direction of a diecasting mold of the diecasting apparatus. In this case, however, in temperature control devices known from the prior art the problem arises that reliable and uniform temperature control of the region capable of being acted upon by casting material cannot be implemented. The temperature control or cooling of the region has to be dimensioned in such a way that reliable cooling is afforded and, at the same time, the cooling down of a diecast component to be produced in the diecasting mold or of the casting material which has remained in the region is not impaired by too rapid and/or too uneven cooling. The boundary conditions for the sufficient cooling of the diecasting mold part and the as uniform cooling of the diecast component as possible give rise to comparatively low cycle times in the production of the diecast component, in order thereby to achieve good durability of the diecast component. This means, however, that only a comparatively small number of diecast components can be produced per unit time. 
         [0004]    By contrast, the object of the invention is to present, for a diecasting apparatus, a temperature control device which does not have the disadvantages initially mentioned, but at the same time permits a good cooling-down characteristic and a high throughput (diecast components per unit time). 
       SUMMARY OF THE INVENTION 
       [0005]    The foregoing object is achieved, according to the invention, by means of a temperature control device. In this case, there is provision whereby this has a first component, a second component and at least one fluid duct formed in the first component and/or the second component, the first component and/or the second component having at least one receptacle for a region, capable of being acted upon with a casting material, of the diecasting apparatus, in particular of a casting inlet, and the fluid duct issuing into at least one heat exchange chamber which is present at least in regions as a marginally open recess in the first component and which can be closed by means of the second component. The temperature control device for the diecasting apparatus is therefore designed at least in two parts. It is composed of the first and of the second component. 
         [0006]    The for controlling the temperature of the region of the diecasting apparatus, that is to say, in particular, the region capable of being acted upon by casting material, can be arranged at least partially in the receptacle. That region of the diecasting apparatus which can be acted upon by casting material is, for example, the casting inlet which may be present in the form of a flow duct or also forms this. During the diecasting operation, casting material, that is to say melt, can flow along the flow duct in the direction of the diecasting mold, from which the diecast component can subsequently be removed. The receptacle of the temperature control device may be formed either by the first component or the second component or by both components together. 
         [0007]    For temperature control, the temperature control device can be acted upon with a temperature control fluid, in particular cooling fluid. While the temperature control device is in operation, this temperature control fluid flows through the at least one fluid duct which is formed in the first component and/or the second component. The fluid duct issues, for example, into a fluid connection of the temperature control device, via which fluid connection the temperature control fluid can be introduced into the fluid duct or can be extracted from this. In order to increase the temperature control efficiency of the temperature control device, the heat exchange chamber is provided. The heat exchange chamber is present as a marginally open recess in the first component and can be closed with the aid of the second component. This means that the second component can be arranged on the first component in such a way that the marginally open recess is closed and the heat exchange chamber is formed. 
         [0008]    The marginally open recess is therefore designed to be open toward the second component, the orifice of the recess being capable of being covered or closed by means of the second component. This ensures, furthermore, that the heat exchange chamber is supplied with temperature control fluid by the fluid duct. It is especially advantageous if the heat exchange chamber is formed solely by the marginally open recess in the first component, that is to say no further depression is provided. 
         [0009]    By the temperature control fluid set at a specific temperature being introduced into the heat exchange chamber, the temperature of that region of the diecasting apparatus which can be acted upon with casting material can be set at least approximately by control and/or regulation. For this purpose, on or in the temperature control device, at least one temperature sensor may be provided, by means of which its temperature and/or the temperature of the region capable of being acted upon can be determined at least approximately. On the basis of this specific temperature, the temperature and/or throughput (volume or mass per unit time) of the temperature control fluid can subsequently be selected or set. The temperature control fluid flows through the heat exchange chamber and at the same time flows, for example, over a heat exchange surface. If the latter is assigned thermally or in a heat-transmitting manner to the region capable of being acted upon with casting material, temperature control of the region takes place in this way. 
         [0010]    The temperature of the temperature control fluid is in this case usually markedly lower than the temperature of the temperature control device or of the region capable of being acted upon, so that these can be cooled as quickly as possible and the diecast component to be produced can be removed from the diecasting apparatus. In contrast to the temperature control devices known from the prior art, therefore, the heat exchange chamber is formed here at least partially in the first component, thus allowing more reliable action of the temperature control fluid upon the heat exchange surface and consequently a better cooling characteristic or more rapid cooling of the region being capable of being acted upon. 
         [0011]    It should be mentioned expressly at this juncture that the temperature control device is provided both for a diecasting apparatus which operates according to the hot-chamber method and for one which implements the cold-chamber method. Any desired material compositions of the melt may also be used. 
         [0012]    In a development of the invention, the heat exchange chamber is coformed partially by a fluid guide depression of the second component. The fluid guide depression of the second component is in this case designed to be open toward the first component. It can therefore form, together with the marginally open recess of the first component, the heat exchange chamber. The volume of the marginally open recess of the first component is usually larger than the volume of the fluid guide depression. However, there may also be provision whereby the fluid guide depression has a larger volume than the recess of the first component, that is to say has a larger fraction of the heat exchange chamber. 
         [0013]    In a development of the invention, the heat exchange chamber has a larger cross section than the fluid duct. The cross section in this case lies in a sectional plane which is perpendicular to the direction of the greatest extent of the fluid duct. This applies both to the fluid duct and to the heat exchange chamber. The heat exchange chamber therefore has, as seen in cross section, a larger area contributing to the temperature control of the diecasting apparatus. A widening should therefore be present at the point of issue of the fluid duct into the heat exchange chamber. When temperature control fluid flows out of the fluid duct into the heat exchange chamber, a kind of free jet is formed in the heat exchange chamber. 
         [0014]    In a development of the invention, a plurality of fluid ducts issue into the heat exchange chamber, at least one of the fluid ducts being a fluid feed duct connected to a fluid feed connection and at least one further fluid duct being a fluid discharge duct connected to a fluid discharge connection. The temperature control fluid can be fed to the heat exchange chamber by means of the fluid feed duct and extracted from the heat exchange chamber via the fluid discharge duct. The fluid feed connection and the fluid discharge connection, to which the fluid feed duct and the fluid discharge duct are respectively connected or fluid-connected, are arranged on the temperature control device in such a way that simple connection to a feed apparatus can be carried out. The feed apparatus serves, for example, for the supply of temperature control fluid and/or for the temperature control of the latter to a specific temperature. 
         [0015]    In a development of the invention, the fluid discharge duct issues into the heat exchange chamber so as to be offset with respect to the fluid feed duct, in particular in the axial direction of the temperature control device. This means that the fluid discharge duct and the fluid feed duct, as seen in their axial direction, do not issue into the heat exchange chamber opposite to one another, but instead so as to be offset with respect to one another. Thus, temperature control fluid flowing through the fluid feed duct into the heat exchange chamber does not impinge directly onto the fluid discharge duct or its point of issue into the heat exchange chamber. Circulation of the temperature control fluid in the heat exchange chamber is thereby achieved. It is especially advantageous if a wall, in particular a heat exchange surface, of the heat exchange chamber lies opposite the fluid feed duct. 
         [0016]    The temperature control fluid flowing through the fluid feed duct into the heat exchange chamber, upon its entry into the heat exchange chamber, therefore impinges directly onto this wall in the sense of impact cooling. As a result of this impingement, a high heat transfer coefficient is achieved. Only thereafter does the temperature control fluid flow out of the heat exchange chamber again through the fluid discharge duct. In other words, the inflow direction of the temperature control fluid out of the fluid feed duct into the heat exchange chamber is to be arranged so as to be offset in its lateral direction with respect to an outflow direction of the temperature control fluid out of the heat exchange chamber through the fluid discharge duct. Lateral direction is to be understood in this context to mean a direction which is perpendicular to the respective flow direction. For example, this direction may correspond to an axial direction of the temperature control device. 
         [0017]    In a development of the invention, the wall of the heat exchange chamber has at least one heat exchange surface which is assigned thermally to a pressure zone which is associated with the acted-upon region of the diecasting apparatus. The pressure zone is therefore a region which either is itself acted upon or capable of being acted upon directly with the casting material or is at least assigned to the acted-upon region of the diecasting apparatus. The heat exchange surface is assigned thermally to the pressure zone, which means that heat can be transmitted or is transmitted between the heat exchange surface and the pressure zone. For example, the pressure zone is present on one side of the wall of the temperature control device and the heat exchange surface is present on the opposite side of the wall. 
         [0018]    The wall is in this case preferably composed of a highly heat-conductive material. The pressure zone or that region of the diecasting apparatus which can be acted upon with casting material can therefore be temperature-controlled via the heat exchange surface. This applies particularly when temperature control fluid can flow over or onto the heat exchange surface. It is in this case especially advantageous if the fluid feed duct of the temperature control device is directed onto the heat exchange surface, so that temperature control fluid flowing through the fluid feed duct into the heat exchange chamber flows directly over the heat exchange surface or impinges onto the latter. 
         [0019]    In a development of the invention, the contour of the heat exchange surface is approximated at least in regions to an in particular three-dimensional contour of the pressure zone or corresponds thereto. This can be achieved, for example, by means of a uniform wall thickness of the wall to which both the pressure zone and the heat exchange surface are assigned in each case on opposite sides. Alternatively, however, by an appropriate choice of the wall thickness, a desired heat conduction rate can also be achieved in this or can be set in a directed manner for specific regions. For example, there may be provision whereby the wall thickness of the wall decreases in the flow direction of the fluid, since the fluid, when it flows through, heats up and therefore its cooling action on the heat exchange surface or the pressure zone decreases. In order to compensate this, it may be necessary to increase the heat conductivity of the wall, this usually being achievable by means of a smaller wall thickness. The three-dimensional contour is understood in this context to mean that the contour of the heat exchange surface is approximated in all directions of space to the contour of the pressure zone or corresponds thereto. 
         [0020]    In a development of the invention, the receptacle is a recess which, in particular, is frustoconical and/or formed centrally in the first component. The receptacle is therefore present in the first component. Said receptacle is designed as a recess and preferably passes through the first component completely, that is to say is designed to be marginally open on both sides. As already described above, that region of the diecasting apparatus which can be acted upon with casting material may be arranged in the recess. Alternatively, the receptacle or recess conforms to the region. For example, the flow duct for the casting material is obtained as a result of an interaction of the receptacle and of a counterelement, in particular a casting material guide extension, of the diecasting apparatus. The recess is preferably of frustoconical design, that is to say has dimensions decreasing or increasing in the longitudinal direction. In this case, there may be provision whereby the recess is formed centrally, that is to say in the middle, in the first component. 
         [0021]    In a development of the invention, the second component is of essentially plate-shaped design. The second component therefore serves, for example, as a closing plate for the marginally open recess of the first component. Plate-shaped is to be understood in this context to mean that the second component has only a small thickness in comparison with its lateral extents. There may also be provision whereby that side of the second component which faces the first component is of essentially planar form. In this case, the heat exchange chamber is formed solely by the marginally open recess of the first component. The second component therefore has no fluid guide depression which at least partially coforms the heat exchange chamber. 
         [0022]    In a development of the invention, the second component can be arranged in a reception depression of the first component. The first component therefore has a depression which corresponds at least essentially to a shape or outline of the second component. In particular, it is in this case advantageous if the reception depression has a depth which essentially corresponds to or is greater than the thickness of the second component. The second component can thus be arranged on the first component in such a way that a planar surface is formed or the second component does not project above the first component. Easy handling of the temperature control device is thereby achieved. 
         [0023]    After the insertion of the second component into the reception depression, said second component is preferably surrounded by the first component in such a way that the former is secured at least in the lateral direction, that is to say no slipping of the second component with respect to the first component in the lateral direction is possible. In the reception depression, a seal may also be provided, by means of which a sealing action is achieved between the first component and the second component, so that the heat exchange chamber is closed off sealingly by means of the second component. 
         [0024]    In a development of the invention, the first and/or the second component have/has at least one fluid guide projection projecting into the heat exchange chamber. If the fluid guide projection is provided on the first component, it usually points in the direction of the second component. If, conversely, said fluid guide projection is provided on the second component, it points in the direction of the first component. Contouring of the first or the second component and therefore of a wall of the heat exchange chamber is achieved by means of the fluid guide projection. By means of such contouring, the flow of the temperature control fluid onto the heat exchange surface can be improved or regions of the heat exchange surface can be acted upon in a directed manner with temperature control fluid. The better cooling characteristic or the more rapid cooling can thereby be achieved. By means of a directed arrangement of one or more fluid guide projections on the first and/or the second component, uniform temperature distribution or a uniform cooling action of the temperature control device or upon the heat exchange surface can therefore be achieved. 
         [0025]    For example, this is provided for regions of the heat exchange surface which match with thermally especially highly loaded regions of the region capable of being acted upon. The heat exchange surface is preferably contoured in such a way that as uniform cooling as possible is achieved. Stresses in the casting material are thereby avoided and high stability of the diecast component is thus achieved. 
         [0026]    In a development of the invention, the first component is releasably connected to the second component, in particular by means of a screw connection. There is therefore provision whereby the second component is formed separately from the first component. The two components are subsequently assembled to form the temperature control device and are connected releasably to one another. The heat exchange chamber is at the same time formed. The releasable connection may basically be made in any desired way. However, a screw connection with at least one screw or with a threaded bolt is preferred. 
         [0027]    In a development of the invention, a seal sealing off the heat exchange chamber is provided between the first component and the second component. In order to prevent an unintended escape of temperature control fluid from the heat exchange chamber, the latter is assigned the seal. The seal may in this case be designed, for example, as an O-ring and essentially surround the heat exchange chamber in the circumferential direction. Exchange of the temperature control fluid located in the heat exchange chamber is of course still possible by means of the fluid duct. 
         [0028]    The invention relates, furthermore, to a diecasting apparatus, with at least one temperature control device, in particular according to the above statements, the temperature control device having a first component, a second component and at least one fluid duct formed in the first component and/or the second component, the first component and/or the second component having at least one receptacle for a region, capable of being acted upon with a casting material, of the diecasting apparatus, in particular of a casting inlet, and a fluid duct issuing into at least one heat exchange chamber which is present at least in regions as a marginally open recess in the first component and which can be closed by means of the second component. The diecasting apparatus is, for example, a diecasting machine and is accordingly designed for the production of diecast components. It has, in addition to further, generally known elements, at least one temperature control device which is designed or developed according to the above statements. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]    The invention is explained in more detail below by means of the exemplary embodiments illustrated in the drawing, without the invention being restricted. In the drawing: 
           [0030]      FIG. 1  shows an exploded illustration of a diecasting apparatus with a casting mold unit, with a gate unit and with a casting inlet unit, these having in each case a diecasting mold composed of two diecasting mold parts, 
           [0031]      FIG. 2  shows a lateral sectional illustration of the diecasting apparatus, the casting inlet unit and a temperature control device being illustrated in detail, and 
           [0032]      FIG. 3  shows a diagrammatic illustration of the temperature control device for the diecasting apparatus, said temperature control device being assigned to the casting inlet unit. 
       
    
    
     DETAILED DESCRIPTION 
       [0033]      FIG. 1  shows a diecasting apparatus  1 , for example a diecasting machine or a part of such. The diecasting apparatus  1  serves for the production of one of more diecast components (not illustrated). It has a casting mold unit  2 , a gate unit  3  and a casting inlet unit  4 . The casting mold unit  2  is composed of a first diecasting mold  5 , the gate unit  3  of a second diecasting mold  6  and the casting inlet unit  4  of a third diecasting mold  7 . The first diecasting mold  5  is composed of two diecasting mold parts  8  and  9  and the second diecasting mold is composed of diecasting mold parts  10  and  11  together. The third diecasting mold  7  is composed of a diecasting mold part  12 . 
         [0034]    The casting mold unit  2  has a casting mold  13 . The casting mold  13  has essentially a shape which reproduces a negative of a diecast component to be produced. During the casting operation carried out by means of the diecasting apparatus  1 , therefore, casting material or melt is introduced into the casting mold  13  and, after the melt has cooled and solidified, the diecast component is removed from the casting mold  13 . For this purpose, the diecasting mold part  8  and/or the diecasting mold part  9  can be displaced in the vertical direction away from the other diecasting mold part  9  or  8  in each case. For this purpose, therefore, a corresponding displacement device is provided. 
         [0035]      FIG. 1  shows, furthermore, the casting inlet unit  4  with the third diecasting mold  7 . The casting inlet unit  4  is assigned a temperature control device which is designed as a cooling ring  14  and which has a heat exchange chamber  15 . The cooling ring  14  or the temperature control device is in this case composed of a first component  16  and of a second component  17 . The cooling ring  14  or the first component  16  has a receptacle  18  for a region of the diecasting apparatus  1  which can be acted upon with casting material. The receptacle  18  is designed as a central recess  19  into which a casting material guide extension  20  of the diecasting mold part  12  engages. Formed on the casting material guide extension  20  is a flow duct as a casting inlet  21  which may extend as far as the gate unit  3 . Molten casting material (melt) can flow along this casting inlet  21  in order to pass through the gate unit  3  into the casting mold unit  2 . When the casting material guide extension  20  is arranged in the receptacle  18 , the casting inlet  21  is formed jointly by a wall  22  of the receptacle  18  and the casting inlet  21  of the casting material guide extension  20 . This means that, during diecasting with the diecasting apparatus  1 , both the casting inlet  21  and the wall  22  can be acted upon with casting material. 
         [0036]    The heat exchange chamber  15  is present at least in regions as a marginally open recess  23  in the first component  16 . Marginally open means in this context that the recess  23  passes at least partially through an outer wall of the cooling ring  14 . The marginally open recess  23  or the orifice present as a result of passage through the outer wall can be closed by means of the second component  17 . In this case, the first component  16  has a reception depression  24  which has a depth corresponding to the thickness of the second component  17 . The second component  17  can therefore be received completely in the reception depression  24 . The first component  16  and the second component  17  are connected to one another by means of a screw connection  25 . For this purpose, four screws are provided, although these are not illustrated in  FIG. 1 . 
         [0037]    A bearing surface  26 , which is designed as a bearing web running around the heat exchange chamber  15 , is provided for the second component  17  in the reception depression  24 . The reception depression  24  is designed in such a way that the first component  16  can receive the second component  17  completely, so that the second component  17  lies at least in regions on the bearing surface  26 , with the result that a sealing action is achieved between the first component  16  and the second component  17 . In addition, of course, in the bearing surface  26  a seal may be provided which is designed, for example, as an O-ring and further increases the sealing action between the first component  16  and the second component  17 . 
         [0038]      FIG. 2  shows a lateral sectional illustration of the diecasting apparatus  1 , the casting inlet unit  4  and the temperature control device or the cooling ring  14  being illustrated in detail. In this case, the casting material guide extension  20  is arranged in the receptacle  18 , so that the casting inlet  21  is formed jointly by the casting material guide extension  20  and the wall  22 . The wall  22  of the heat exchange chamber  15  therefore has a pressure zone  27  which can be acted upon with casting material or which constitutes that region of the diecasting apparatus  1  which can be acted upon with casting material. The pressure zone  27  is arranged on one side of the wall  22 , outside the heat exchange chamber  15 . A heat exchange surface  28  is present on the opposite side of the wall  22 . The heat exchange surface  28  at least partially delimits the heat exchange chamber  15 . Moreover, said heat exchange surface is assigned thermally to the pressure zone  27 . This means that heat can be transmitted between the pressure zone  27  and the heat exchange surface  28 . In other words, pressure zone  27  and heat exchange surface  28  are assigned to one another in a heat-transmitting manner. The temperature of the pressure zone  27  can therefore also be controlled by temperature control of the heat exchange surface  28 . 
         [0039]      FIG. 3  shows a diagrammatic illustration of the temperature control device or of the cooling ring  14 . In this case, only the first component  16 , but not the second component  17 , is illustrated. It becomes clear that the first component  16  has a plurality of fluid ducts  29  by means of which a temperature control fluid can flow through the cooling ring  14 . As a result of this throughflow, the cooling ring  14  and therefore the pressure zone  27  or that region of the diecasting apparatus  1  which can be acted upon with casting material are temperature-controlled, in particular cooled.  FIG. 3  shows that a plurality of fluid ducts  29  issue into the heat exchange chamber  15 . In this case, one of the fluid ducts  29  is a fluid feed duct  30  and a further fluid duct  29  is a fluid discharge duct  31 . Temperature control fluid can be introduced into the heat exchange chamber  15  through the fluid feed duct  30 , while said temperature control fluid can be extracted from it through the fluid discharge duct  31 . 
         [0040]    The designations, fluid feed duct  30  and fluid discharge duct  31 , are to be understood here purely by way of example. The temperature control fluid may, of course, be introduced through any one of the fluid ducts  29  into the heat exchange chamber  15  and be extracted again through any one of these. The fluid feed duct  30  is fluid-connected to a fluid feed connection  32  and the fluid discharge duct  31  to a fluid discharge connection  33 . These may be connected, for example, to a feed apparatus which feeds temperature-controlled temperature control fluid to the cooling ring  14  via the fluid feed connection  32  and extracts it again through the fluid discharge connection  33 . 
         [0041]      FIG. 3  shows clearly that the heat exchange chamber  14  has a larger cross section than the fluid ducts  29 . This means that a widening of the flow cross section is present in the direction of the heat exchange chamber  15  at the point of issue of the fluid ducts  29  into the heat exchange chamber  15 . 
         [0042]    It can be seen, moreover, that the fluid discharge duct  31  issues into the heat exchange chamber  15  so as to be offset with respect to the fluid feed duct  30 . This means that a point of issue of the fluid discharge duct  31  into the heat exchange chamber  15  is not arranged opposite a point of issue of the fluid feed duct  30  into the heat exchange chamber  15 . Temperature control fluid flowing through the fluid feed duct  30  into the heat exchange chamber  14  therefore does not flow directly onto the fluid discharge duct  31 . Instead, throughflow of the heat exchange chamber  15  and therefore efficient temperature control of the heat exchange surface  28  are achieved. In the exemplary embodiment illustrated in  FIG. 3 , the points of issue of the fluid feed duct  30  and fluid discharge duct  31  into the heat exchange chamber  15  are arranged in such a way that the temperature control fluid can flow over the heat exchange surface  28  over the largest part or its entire longitudinal extent. Uniform temperature control of the pressure zone  27  or of that region of the diecasting apparatus  1  which can be acted upon with casting material is thus achieved. 
         [0043]    The diecasting apparatus  1  illustrated in  FIG. 1  serves for the production of diecast components from casting material which is present in the form of melt. To produce the diecast component, the diecasting mold parts  8  and  9  and the diecasting mold parts  10  and  11  are moved toward one another, so that the casting mold  13  or a gate region of the gate unit  3  are sealed off. The pressurized melt is subsequently fed through an orifice of the casting inlet unit  4 , runs along the casting inlet  21  in the direction of the gate unit  3  and flows into the gate region or flow ducts of the latter. The flow ducts ensure that the stream of melt is fanned out, so that the melt can be fed to the casting mold  13  in different positions, as seen in the lateral direction. Melt is fed to the casting inlet unit  4  until the casting mold  13  is full. 
         [0044]    The melt is subsequently cooled, for which purpose fluid is introduced into heat exchange chambers of the diecasting mold parts  8 ,  9 ,  10 ,  11  and  12  and into the heat exchange chamber  15 . The temperature of the fluid or of its mass flow is selected in such a way that the cooling characteristic of the diecast component is as good as possible. For this purpose, in particular, it is necessary to cool this as uniformly as possible, in order to ensure sufficiently high stability of the diecast component. A further aim is as rapid cooling as possible, in order to achieve a high throughput of the diecast components and consequently lower production costs. 
         [0045]    After the solidification or cooling of the melt, the diecasting mold parts  8  and  9  and the diecasting mold parts  10  and  11  are in each case displaced away from one another, so that the casting mold  13  and the gate region are released. The cooling ring  14  is likewise removed from the casting inlet unit  4 . The diecast component produced, together with the runner which has remained in the gate region and with that casting material of the diecasting apparatus  1  which has remained in the region of the casting inlet unit  4 , can subsequently be removed. In the context of subsequent machining, the runner is removed from the diecast component and is preferably melted in once more.