DE202005021053U1 - Casting mold part, especially for pressure casting of aluminum or magnesium, consists of contour part and cooled core having coolant inlet and outlet connections and external cooling groove for effective cooling - Google Patents

Abstract

A casting mold part (1) consists of a contour part (2) with a specific outer contour and a cooled core (3), slidable into the contour part and having a cooling system consisting of coolant inlet and outlet connections and an external, shaped cooling groove, which lies against the inner wall of the contour part so that the groove and the wall together enclose a cooling channel.

Description

The The invention relates to a tool part for casting-technical purposes, in particular Contour judgment for one diecasting, preferably for the aluminum and magnesium die casting technique.

Such Tool parts, in particular contour parts, are used in metal diecasting tools used. Here, the Konturteil on its outer surface has the corresponding contour that determines the shape of the workpiece to be cast. In order to achieve a corresponding temperature, the tool part points Drilled holes, which are connected to a coolant circuit can be connected for a cooling to reach the tool part. So far, only a small cooling effect achieved, because such holes only in a few areas of controversy or the like can be provided. An approximate cooling is can not be reached with such holes. As a result, the cooling effect is low, which directly affects the cycle time, so that the production the corresponding parts is relatively expensive.

outgoing From this prior art, the invention is based on the object a tool part generic type to create, which in a simple way a high cooling effect achieved and thus allows short cycle times during die casting.

to solution This object is proposed that the tool part of a Contour judgment with specified outer contour and a cooling core insertable into the contour element with coolant inlet and drain connection as well as externally formed cooling channels, with the coolant supply and drain a cooling circuit form and abut the inner wall of the Konturteils, so that the cooling channels Include cooling ducts with the wall of the contour section.

The Contour judgment preferably has an insertion opening for the cooling core on the back. Intended use becomes the cooling core inserted in the contour statement and positioned in a suitable manner and to the outside kept sealed. Because the cooling core is a separate component is, is it possible on the outside surface of the Cooling core corresponding cooling contours in the form of cooling channels or to provide the like. these can arranged according to the requirements of the workpiece to be cast and be formed, with the production of such chutes or the like on the outer surface of the Cooling core is extremely easy to perform. When inserted into the contour part cooling core can then on the Coolant inlet and drain coolant supplied and dissipated be, with an approximate cooling is achieved, resulting in shorter cycle times during the casting process leads.

Preferably it is provided that the Konturteil a pot-like insert opening for the cooling core in which the cooling core is inserted appropriately.

For example the contours may have an approximately conical pot-like insertion opening, in the suitably shaped cooling core is insertable.

Preferably it is provided that the wall thickness of the Konturteils smaller as 40mm and larger 30mm is.

For example can the wall thickness of the contour part is about 35mm.

moreover is preferably provided that the cooling core at its at the mouth of the insert opening at the end of the coolant supply. and drain connections that has over the cooling core penetrating channels to the outer surface, in particular end face, of cooling core to lead and out there.

Especially It is preferably provided that the cooling core is mounted on a support that is in the estuarine area engages the Konturteils, wherein between the carrier and the Konturteil at least one Seal is provided.

The inventive training allows a cost-effective Production of a corresponding tool part, the improved cooling effect and thus leads to increased cycle time.

Preferably, the contour part is milled on the inside as intended, wherein the thus formed, substantially conical cavity is filled with a correspondingly shaped cooling core. The cooling core is provided on its surface with grooves, so that together with the contours judgment a channel formation and thus a cooling circuit. The tempering medium can be fed through the back of the cooling core. from there it is forwarded via corresponding outlet openings to the surface. On the surface of the cooling core, the temperature control medium is directed circumferentially in channels around the core. The seal between the carrier holding the cooling core and the Konturteil takes place for example by means of a sealing ring which is suitable to keep temperatures reliably up to 180 ° C. Due to the contour-near temperature, it is possible to regulate the temperature level of the component faster. Thus, a more efficient cooling system is provided by the invention, with low costs when replacing the wear parts, such as the slide head ent stand. Also, an optimal stress distribution is achieved according to the arrangement and design of the cooling channels.

One schematic embodiment The invention is illustrated in the drawing and in the following described in more detail.

It shows:

1 a tool part seen in section;

2 a view of the Konturteiles seen in the mouth of the Konturteiles;

3 a cooling core in side view;

4 the cooling core in plan view.

In the drawing figure 1 is a tool part 1 shown for casting purposes, in the exemplary embodiment, a slide head for a diecasting tool, preferably for the aluminum and magnesium die casting technique.

The tool part 1 consists of a contour 2 , a cooling core 3 and a carrier 4 ,

The contour judgment 2 has the intended outer contour. In a back cavity of the contour 2 is the cooling core 3 inserted, which has lying inside coolant inlet and outlet channels and on its front side corresponding coolant connections. The outside shows the cooling core 3 a variety of molded chutes 5 on. In the installation target position, which is in 1 Shown are these chutes 5 with the inner wall of the contour 2 Cooling channels, so that a uniform and near-contour cooling is possible.

The contour judgment 2 has a pot-like insertion opening for the cooling core 3 on, wherein both parts are conical and shaped to match each other. The wall thickness of the contour 2 is preferably about 35mm. The cooling core 3 indicates at its at the mouth of the insert opening of the contour judgment 2 located at the end of the coolant inlet and outlet connections. At this end of the cooling core 3 is a carrier 4 attached to the mouth area of the contour section 2 engages, being between the carrier 4 and the contour 2 in a groove 6 a seal, for example in the form of a sealing ring, is provided. Also the carrier 4 is interspersed with holes for the supply of coolant and the discharge of coolant.

The Invention is not on the embodiment limited, but in the context of the Revelation often variable.

All new individual items disclosed in the description and / or drawing. and combination features are considered essential to the invention.

Claims (4)

Tool part ( 1 ) for casting-technical purposes, in particular contour judgment for a diecasting tool, preferably for the aluminum and magnesium die casting technique , characterized in that the tool part ( 1 ) from a contraction decision ( 2 ) with the intended outside contour and one in the contour 2 ) retractable cooling core ( 3 ) with coolant inlet and outlet connection and externally formed cooling channels ( 5 ), which form a cooling circuit with the coolant inlet and outlet and on the inner wall of the Konturteils ( 2 ), so that the cooling channels ( 5 ) with the wall of the contour ( 2 ) Include cooling channels. Tool part according to claim 1, characterized in that the contours ( 2 ) a pot-like insert opening for the cooling core ( 3 ) into which the cooling core ( 3 ) is inserted appropriately. Tool part according to one of claims 1 or 2, characterized in that the cooling core ( 3 ) has, at its end located at the mouth of the insertion opening, the coolant inlet and outlet connections which extend beyond the cooling core ( 3 ) penetrating channels to the outer surface, in particular end face, of the cooling core ( 3 ) and lead there. Tool part according to one of claims 1 to 3, characterized in that the cooling core ( 3 ) on a support ( 4 ), which enters the mouth area of the contour ( 2 ), wherein between the carrier ( 4 ) and the contraction decision ( 2 ) is provided at least one seal.