Die casting machine with a die casting mold for producing metal die cast parts, and operating method

Abstract

A die casting machine with a die casting mold produces metal die cast parts. The die casting machine has a first machine shield, to which a first mold half of the die casting mold is secured, and a second machine shield, to which a second mold half of the die casting mold is secured. In order to compensate for the deflection of the machine shields, an intermediate plate which has at least two temperature-controlling devices that can be used to generate a temperature difference leading to the curving of the intermediate plate is arranged between the first machine shield and the first mold half and/or between the second machine shield and the second mold half.

Claims

1. A die casting machine with a die casting mold for producing metal die cast parts, comprising: a first machine shield, to which a first mold half of the die casting mold is fastened; a second machine shield, to which a second mold half of the die casting mold is fastened; and an intermediate plate, which comprises at least two temperature-controlling devices by way of which a temperature difference which results in curvature is generatable, wherein the intermediate plate is arranged between the first machine shield and the first mold half and/or between the second machine shield and the second mold half.

2. The die casting machine according to claim 1, wherein the intermediate plate comprises a first, electrically operable temperature-controlling device and a second temperature-controlling device which is operable with a temperature-controlling medium.

3. The die casting machine according to claim 1, wherein the intermediate plate comprises a first temperature-controlling device which is operable with a temperature-controlling medium and a second temperature-controlling device which is operable with a temperature-controlling medium.

4. The die casting machine according to claim 3, wherein the two temperature-controlling devices are formed by two differently designed duct systems.

5. The die casting machine according to claim 1, wherein the intermediate plate is produced from a solid steel block.

6. The die casting machine according to claim 1, wherein the intermediate plate comprises a height of between 250 mm and 350 mm in a closing direction.

7. A method of using a die casting machine having a die casting mold, the die casting machine comprising: a first machine shield, to which a first mold half of the die casting mold is fastened; a second machine shield, to which a second mold half of the die casting mold is fastened; and an intermediate plate, which comprises at least two temperature-controlling devices by way of which a temperature difference which results in curvature is generatable, wherein the method comprises: arranging the intermediate plate between the first machine shield and the first mold half and/or between the second machine shield and the second mold half; and producing motor vehicle components via the die casting machine with the intermediate plate.

8. The method according to claim 7, wherein the produced motor vehicle components are motor vehicle side members.

9. A method of operating a die casting machine comprising a first machine shield, to which a first mold half of the die casting mold is fastened; a second machine shield, to which a second mold half of the die casting mold is fastened; and an intermediate plate, which comprises at least two temperature-controlling devices by way of which a temperature difference which results in curvature is generatable, the method comprising: arranging the intermediate plate between the first machine shield and the first mold half and/or between the second machine shield and the second mold half; setting a temperature difference in the intermediate plate such that the first and second mold halves of the die casting mold properly close.

10. The method according to claim 9, wherein the temperature difference is set to be between 30 K and 70 K.

11. The method according to claim 9, wherein the temperature difference is set to be 50 K.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic representation of a die casting machine according to an embodiment of the invention with a die casting mold.

(2) FIG. 2 illustrates a schematic representation of the function of an exemplary intermediate plate in the die casting machine of FIG. 1.

DETAILED DESCRIPTION OF THE DRAWINGS

(3) The die casting machine 100 shown in FIG. 1 comprises a first machine shield 110 and a second machine shield 120. The second machine shield 120 is guided on guides 130 so as to be horizontally movable. A first mold half 150 of the die casting mold 140 is fastened to the first machine shield 110. A second mold half 160 of the die casting mold 140 is fastened to the second machine shield 120. Platens or the like for the mold halves 150, 160 are not shown. The vertically divided mold halves 150, 160 delimit a cavity 170 for producing a die cast part of metal or a metal die cast part.

(4) An intermediate plate 180 is arranged in each case between the first machine shield 110 and the first mold half 150 and between the second machine shield 120 and the second mold half 160. The intermediate plates 180 compensate for the deflections D, shown by the dotted lines, of the machine shields 110, 120, as is shown in more detail below. The intermediate plates 180 are fastened in a suitable manner to the machine shields 110, 120, in particular only in their edge regions. The mold halves 150, 160 can be fastened to the intermediate plates 180 and/or the intermediate plates 180 can be fastened viaor reaching throughthe machine shields 110, 120. The intermediate plates 180 can be realized in an identical or also a different manner.

(5) The die casting machine 100 can include further components which are known from the prior art, such as, for example, a machine bed, a machine control unit, a shot unit for introducing the molten mass into the cavity 170, a closing drive for driving the movable machine shield 120, an ejecting device and the like.

(6) FIG. 2 shows a sectional representation of one of the intermediate plates 180. The intermediate plate 180 comprises a first and a second temperature-controlling device, by way of which a temperature difference, which leads to the defined plate curvature W, can be generated inside the intermediate plate 180. To this end, the intermediate plate 180 is realized with a first duct system 181 and with a second duct system 182 which both differ in number and course from its flow channels. The temperature-controlling devices or duct systems 181, 182 can be operated by a temperature-controlling medium which is provided, for example, on the machine side.

(7) The temperature-controlling medium for the first duct system 181 comprises the temperature T1 (for example 100 C.) and the temperature-controlling medium for the second duct system 182 comprises the temperature T2 (for example 50 C.). A curvature W of the intermediate plate 180 is achieved in a bi-metalloid manner as a result of the temperature difference provided (for example 50 K), as shown by the dotted line. The central curvature is, for example, between 1.0 mm and 2.0 mm. Pressure can be applied to the given mold half 150 or 160, in particular centrally, by way of the curvature W. That is, in FIG. 1 the curvature of the left-hand intermediate plate 180 is effected to the right so that it presses against the second mold half 160, and the curvature of the right-hand intermediate plate 180 is effected to the left so that it presses against the first mold half 150. The curvature W and the pressure achievable thereby can be set by way of the temperature difference (T1T2).

LIST OF REFERENCES

(8) 100 Die casting machine 110 Machine shield 120 Machine shield 130 Guide 140 Die casting mold 150 Mold half 160 Mold half 170 Cavity 180 Intermediate plate 181 Temperature-controlling device 182 Temperature-controlling device D Deflection T1 Temperature T2 Temperature Curvature (plate curvature)

(9) The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.