Clamping device for fixing a mould for producing a motor vehicle component, mould arrangement, casting device

Abstract

The invention relates to a clamping device for fixing a mould for producing a motor vehicle component; wherein the clamping device is designed to engage in a recess of the mould in order to fix the mould to a clamping plate of a casting device; the clamping device has a clamping element that can be moved along a clamping path; the clamping device is designed to clamp the mould to the clamping plate by clamping the clamping element along the clamping path and in the direction of the recess; and the clamping element has a clamping surface oriented parallel to the clamping plate for contacting the recess of the mould.

Description

[0001] Clamping device for fixing a mold for the production of a motor vehicle component,

[0002] Mold arrangement, casting device

[0003] The present disclosure relates to a clamping device for fixing a mold for the manufacture of a motor vehicle component; wherein the clamping device is configured to engage in a recess of the mold to fix the mold to a clamping plate of a casting device; the clamping device has a clamping element that is displaceable along a clamping path; and the clamping device is configured to clamp the mold to the clamping plate by clamping the clamping element along the clamping path and in the direction of the recess. The disclosure relates equally to a mold arrangement comprising a mold that can be fixed to a clamping plate of a casting device and a clamping device, and to a casting device comprising a mold arrangement and a clamping plate.

[0004] The casting of motor vehicle components is known from the prior art.

[0005] DE 10 2006 037 458 A1 discloses a casting device, in particular a low-pressure casting device, with a mold forming a mold cavity for a casting to be produced and a feeding device by means of which hot, liquid casting material is introduced into the mold, wherein the surface of at least one highly wear-prone part or section of the feeding device is provided with a coating containing a ceramic material.

[0006] Furthermore, it is known that the mold is clamped to the particleboard or machine plate. Known clamping concepts for fixing the mold allow for clamping. However, the mold is subjected to thermal stress and, in particular, heats up during casting. This thermal stress can cause the mold to expand. Known clamping concepts do not accommodate this expansion when the mold is thermally stressed. Instead, cooling the mold is a known method.

[0007] Against the background of this prior art, one objective of the present disclosure is to provide a device suitable for enriching the prior art and improving at least the aforementioned aspects of the prior art. In particular, the disclosure aims to enable stress-free fixing of a thermally expanding mold.

[0008] The problem is solved by the features of the independent claims. The dependent claims contain further developments of the disclosure.

[0009] The problem is then solved according to one aspect of the disclosure by a clamping device for fixing a mold for the manufacture of a motor vehicle component; wherein the clamping device is configured to engage in a recess of the mold to fix the mold to a clamping plate of a casting device; the clamping device has a clamping element that is displaceable along a clamping path; the clamping device is configured to clamp the mold to the clamping plate by clamping the clamping element along the clamping path and in the direction of the recess; and the clamping element has a clamping surface aligned parallel to the clamping plate for contacting the recess of the mold.

[0010] It was recognized that the clamping device can be crucial in enabling expansion under thermal stress of the mold or casting form.

[0011] For this purpose, the clamping device has a clamping surface aligned parallel to the clamping plate, i.e., a clamping surface parallel to the clamping plate. The mold can thus slide along the clamping element due to expansion or thermal expansion. This ensures reliable holding of the mold. Loosening and / or tensioning of the mold can be avoided.

[0012] Optionally, the clamping path can be aligned at an angle to the clamping plate. This allows advantageous clearance areas or a gap to be created with a typically wedge-shaped clamping element, which can accommodate expansion.

[0013] Optionally, the clamping device is designed to create a gap between the mold and a free surface of the clamping element when clamped. This gap can accommodate expansion, allowing the mold to expand in the direction of the gap.

[0014] Optionally, the free surface is aligned perpendicular to the clamping surface. This allows for effective gap control and simultaneously ensures reliable application of a clamping force. Optionally, the clamping device can be mounted to the clamping plate. This establishes a force-fit connection and a geometric relationship between the clamping device and the clamping plate.

[0015] According to one aspect of the disclosure, a mold arrangement is provided, comprising a mold that can be fixed to a clamping plate of a casting device and a clamping device described herein, wherein the mold has a recess. Optionally, the clamping device has one or more of the features described as optional and / or advantageous in order to achieve an associated technical effect.

[0016] Optionally, the recess features a second clamping surface arranged parallel to the clamping plate. This allows the mold to slide along the clamping element due to expansion or thermal expansion, thus reliably holding the mold in place. Loosening and / or tensioning of the mold can be avoided.

[0017] Optionally, the recess has a second free surface arranged perpendicular to the second clamping surface. This creates a gap that can accommodate expansion.

[0018] Optionally, the mold is designed to produce a motor vehicle component configured as an axle carrier, in particular a rear axle carrier. This is an exemplary application where reliable fixing and compensation for thermal expansion can be advantageously utilized.

[0019] According to one aspect of the disclosure, a casting device is provided, comprising the mold assembly described herein and a clamping plate. Optionally, the mold assembly and / or its clamping device may have one or more of the features described as optional and / or advantageous in order to achieve an associated technical effect.

[0020] One embodiment of each is described below with reference to the figures.

[0021] Fig. 1 schematically shows a casting device;

[0022] Fig. 2 shows an example of a clamping device;

[0023] Fig. 3 schematically shows a casting device, a mold arrangement and a clamping device according to one aspect of the disclosure; and Fig. 4 shows by way of example a section through a clamping device according to one aspect of the disclosure.

[0024] Figure 1 schematically shows a casting device 300. The casting device 300 comprises a clamping plate 310 or a machine plate and a mold 210. Due to thermal loads, the mold 210 can experience local expansion A, which can lead to stresses in the mold 210.

[0025] The clamping plate 310 is designed to clamp and fix a mold 210 to it. For this purpose, the casting device 300 comprises a clamping device 100, and the mold 210 has a recess 215.

[0026] The clamping device 100 is designed to fix the mold 210 to the clamping plate 310 for the production of a motor vehicle component. For this purpose, the clamping device 100 is configured to engage the mold 210 in the recess 215 of the mold 210 to fix it in place. The clamping device 100 has a clamping element 102 that is displaceable along a clamping path SW. The clamping path SW is parallel to the machine plate 310 and thus oriented towards a surface (not indicated) forming a contact area between the mold 210 and the machine plate 310. The clamping device 100 is designed to clamp the mold 210 to the clamping plate 310 by clamping the clamping element 102 along the clamping path SW and in the direction of the recess 215. The clamping element 102 has a clamping surface 103 and the recess 215 has a second clamping surface 216.During clamping, the clamping surface 103 and the second clamping surface 216 contact each other, thus generating a clamping force F with a component that clamps the mold 210 to the clamping plate 310. The clamping force F has a component in the direction of the expansion A and a component perpendicular to the clamping plate 310, thereby clamping the mold 210 to the clamping plate 310.

[0027] Figure 2 shows an example of a clamping device 100. The clamping device 100 is an example of the clamping device 100 shown in Figure 1. Figure 2 is described with reference to Figure 1. The clamping device 100 has a housing (not indicated) and a clamping element 102 that is displaceable along the clamping path SW. The clamping element 102 has a clamping surface 103 oriented at an angle to the clamping path SW.

[0028] Figure 3 schematically shows a casting device 300, a mold assembly 200, and a clamping device 100 according to one aspect of the disclosure. The casting device 300 comprises a mold assembly 200 and a clamping plate 310, or machine plate. The mold assembly 200 comprises a mold 210 and a clamping device 100. The clamping device 100 is configured to be mounted on the clamping plate 310 in order to exert a clamping force F between the clamping device 100 and the mold 210.

[0029] Mold 210 is designed to produce a motor vehicle component configured as an axle carrier, in particular a rear axle carrier. Mold 210 can experience local expansion A due to thermal stresses, which can lead to stresses within the mold.

[0030] The clamping plate 310 is designed to clamp and fix the mold 210 to it. For this purpose, the mold 210 has a recess 215, and the clamping device 100 is designed to fix the mold 210 to the clamping plate 310 for the production of a motor vehicle component. The casting device 300 also has a T-nut 320, which defines the relative arrangement of the mold 210 and the clamping plate 310.

[0031] The clamping device 100 is designed to engage the mold 210 in the recess 215 of the mold 210 to fix it in place. For this purpose, the clamping device 100 has a clamping element 102 that is movable along a clamping path SW. The clamping device 100 is designed to clamp the mold 210 to the clamping plate 310 by clamping the clamping element 102 along the clamping path SW and in the direction of the recess 215. The clamping element 102 has a clamping surface 103, and the recess 215 has a second clamping surface 216. During clamping, the clamping surface 103 and the second clamping surface 216 contact each other, thus generating a clamping force F with a component that clamps the mold 210 to the clamping plate 310.The clamping force F is perpendicular to the indicated expansion A, which is the main expansion direction of the mold 210, and thus perpendicular to a surface 211 of the mold 210, which forms a contact surface between the mold 210 and the clamping plate 310.

[0032] The clamping element 102 has a clamping surface 103 aligned parallel to the clamping plate 310 for contacting the recess 215 of the mold 210. The clamping path SW is oriented perpendicular to the clamping plate 310 or machine plate 310. The clamping path SW is thus oriented perpendicular to a surface 211 of the mold 210 that forms a contact surface between the mold 210 and the machine plate 310. The clamping element 102 is wedge-shaped due to the clamping surface 103 and clearance surface 104 being perpendicular to each other.

[0033] The recess 215 has a second clamping surface 216 arranged parallel to the clamping plate 310. The clamping surface 216 is oriented perpendicular to the surface 211 of the mold 210 that abuts the clamping plate 310.

[0034] The clamping device 100 has a clearance surface 104. The clearance surface 104 is defined by the fact that it is free from contact with the recess 215. The clearance surface 104 is oriented perpendicular to the clamping surface 103, or to the surface 211. The recess 215 has a second clearance surface 217 arranged perpendicular to the second clamping surface 216. The second clearance surface 217 is defined by the fact that it is free from contact with the clamping device 100. Accordingly, the clamping device 100 is configured to create a gap 140 between the mold 210 and the clearance surface 104 of the clamping element 102 when clamped. The gap 140 can accommodate the expansion A. The free surface 104 of the clamping element 102 and the second free surface 217 of the recess 215 are oriented parallel to each other and are spaced apart from each other in the clamped state.The gap 140 is formed between the free surface 104 of the clamping element 102 and the second free surface 217 of the recess 215. The gap 140 is oriented at an angle to the clamping path SW.

[0035] Figure 4 shows an example of a section through a clamping device 100 according to one aspect of the disclosure. The clamping device 100 is an example of the clamping device 100 shown in Figure 3. Figure 4 is described with reference to Figure 3. The clamping device 100 has a housing (not indicated) with a mounting side 105. The clamping device 100 is designed to be mounted to the clamping plate 310 with the mounting side 105. The clamping device 100 has a clamping element 102 that is displaceable along the clamping path SW. The clamping element 102 has a clamping surface 103 oriented perpendicular to the clamping path SW and a clearance surface 104 oriented perpendicular to the clamping path SW. The clamping surface 103 and the mounting side 105 are aligned parallel to each other. In the mounted state, the mounting side 105 and the surface 211 of the mold 210 are aligned with each other. Reference symbol (part of the description)

[0036] 100 clamping device

[0037] 102 Clamping element

[0038] 103 clamping surface

[0039] 104 open space

[0040] 105 Assembly side

[0041] 140 gap

[0042] 200 mold arrangement

[0043] 210 mold

[0044] 211 Surface

[0045] 215 Exclusion

[0046] 216 second clamping surface

[0047] 217 second open space

[0048] 300 casting device

[0049] 310 Chipboard

[0050] 320 Nut stone

[0051] A extent

[0052] F Tensile force

[0053] SW Spannweg

Claims

Claims 1. Clamping device (100) for fixing a mold (210) for the manufacture of a motor vehicle component; wherein - the clamping device (100) is designed to engage in a recess (215) of the mold (210) to fix the mold (210) to a clamping plate (310) of a casting device (300); - the clamping device (100) has a clamping element (102) that can be moved along a clamping path (SW); - the clamping device (100) is set up to clamp the clamping element by clamping it (102) to clamp the mold (210) to the clamping plate (310) along the clamping path (SW) and in the direction of the recess (215); and - the clamping element (102) a clamping surface aligned parallel to the clamping plate (310) (103) for contacting the recess (215) of the mold (210).

2. Clamping device (100) according to claim 1, wherein the clamping path (SW) is aligned at an angle to the clamping plate (210).

3. Clamping device (100) according to claim 1 or 2, wherein the clamping device (100) is configured to create a gap (140) between the mold (210) and a clearance surface (104) of the clamping element (102) in the clamped state.

4. Clamping device (100) according to claim 3, wherein the free surface (104) is aligned perpendicular to the clamping surface (103).

5. Clamping device (100) according to one of the preceding claims, wherein the clamping device (100) is designed to be mounted on the clamping plate (310).

6. Mold arrangement (200) comprising a mold (210) that can be fixed to a clamping plate (310) of a casting device (300) and a clamping device (100) according to one of the preceding claims, wherein the mold (210) has a recess (215).

7. Mold arrangement (200) according to claim 6, wherein the recess (215) has a second clamping surface (216) arranged parallel to the clamping plate (310).

8. Mold arrangement (200) according to claim 7, wherein the recess (215) has a second free surface (217) arranged perpendicular to the second clamping surface (216).

9. Mold arrangement (200) according to one of claims 6 to 8, wherein the mold (210) is configured to produce a motor vehicle component designed as an axle carrier, in particular a rear axle carrier.

10. Casting device (300) comprising the mold arrangement (200) according to any one of claims 6 to 9 and a clamping plate (310).

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