Wheel casting mold

Abstract

The present application relates to a wheel casting mold. It includes: an upper mold plate; a first mold core, which is installed on the upper mold plate and fixed relative to the upper mold plate; the shape of the first mold core corresponds to the rim setting; an ejection mechanism, including a push rod, one end of which is located above the upper mold plate to connect to the ejection power mechanism, and the other end passes through the upper mold plate to connect to the mold core; the push rod can move up and down relative to the upper mold plate; a second mold core, which is installed at the lower end of the push rod and can move up and down relative to the upper mold plate under the push of the push rod; the shape of the second mold core corresponds to the hub and spoke settings; a plurality of sliders, which are installed on the upper mold plate or the first mold core and can rotate in the radial direction relative to the upper mold plate and the first mold core; the shape of the slider corresponds to the weight reduction groove setting. The technical solution of the present application can form automobile wheels in one step through a casting mold, thereby reducing costs.

Description

[0001] Related Applications

[0002] This application claims priority to Chinese patent application number 2024206425038, filed on April 1, 2024, entitled “A core-pulling water-cooled aluminum alloy wheel casting mold,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the field of wheel manufacturing, and in particular to a wheel casting mold. Background Art

[0004] The automobile wheel is a rigid wheel that fixes the tire edge, supports the tire and bears the load together with the tire. The automobile wheel may include a rim, a spoke and a hub.

[0005] In order to improve the performance of the car, the research and development of wheel lightweight technology needs to be continued under the premise of increasing or keeping the wheel strength and stability unchanged. In order to make the wheel lightweight, the wheel will be equipped with many weight-reducing structures, such as weight-reducing grooves and weight-reducing holes.

[0006] However, wheels with many weight-reducing structures bring problems to the production of wheels. For example, they cannot be formed in one step through a casting mold, but need to be cast and then cut, which wastes casting materials and increases labor costs. Utility Model Content

[0007] In view of this, the present application provides a wheel casting mold to solve at least one problem existing in the background technology.

[0008] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0009] The present application provides a wheel casting mold configured to cast a vehicle wheel, wherein the vehicle wheel comprises a wheel hub, a rim and a spoke, wherein a plurality of weight-reducing grooves are provided on the inner side where the rim and the spoke meet, and wherein the wheel casting mold comprises an upper mold assembly and a lower mold, wherein the upper mold assembly comprises:

[0010] Upper template;

[0011] A first mold core is installed on the upper mold plate and fixed relative to the upper mold plate; the shape of the first mold core corresponds to the rim;

[0012] The ejection mechanism comprises a push rod, one end of which is located above the upper mold plate to connect to the ejection power mechanism, and the other end of which passes through the upper mold plate to connect to the mold core; the push rod can move up and down relative to the upper mold plate;

[0013] A second mold core is installed at the lower end of the push rod and can move up and down relative to the upper mold plate under the push of the push rod; the shape of the second mold core corresponds to the wheel hub and the spokes;

[0014] A plurality of sliding blocks are installed on the upper mold plate or the first mold core and can rotate in a radial direction relative to the upper mold plate and the first mold core; the shape of the sliding blocks corresponds to the setting of the weight-reducing grooves.

[0015] In an optional embodiment, a rotating device is installed on the upper mold plate or the first mold core, and the slider is provided with a rotating mechanism cooperating with the rotating device, and the slider is installed on the upper mold plate or the first mold core by cooperating with the rotating device; during demolding, the workpiece moves downward and squeezes the slider downward, forcing the slider to rotate inward with the rotation center of the rotating device as the axis until the workpiece is ejected.

[0016] In an optional embodiment, the rotating device includes a pin shaft, and the rotating mechanism includes a pin hole that cooperates with the pin shaft.

[0017] In an optional embodiment, a downwardly extending support is installed at the bottom of the upper template, the support is provided with a mounting hole extending along the chord direction of the automobile wheel, and the pin shaft is inserted into the mounting hole.

[0018] In an optional embodiment, the slider includes a pull rod and a core pulling block, the pull rod includes the pin hole; the core pulling block is configured to be inserted into the weight reduction groove, and the core pulling block is installed at the bottom of the pull rod.

[0019] In an optional embodiment, the upper mold plate further includes a return spring, which is disposed on a rotation path of the slider; when the slider rotates inward, the return spring is compressed; after demolding is completed, the slider is reset under the elastic force of the return spring.

[0020] In an optional embodiment, the upper template further includes a spring mounting rod mounted on the support, wherein the spring mounting rod is L-shaped, with one end mounted on the support and the other end extending downward for mounting the return spring.

[0021] In an optional embodiment, the ejection mechanism further includes a push plate, which is located above the upper template; the bottom of the push plate is connected to the push rod, and the top is connected to the ejection power mechanism.

[0022] In an optional embodiment, the ejection mechanism further includes a connecting rod, which is located above the push plate; one end of the connecting rod is connected to the push plate, and the other end extends upward and is connected to the ejection power mechanism, so that the push plate is connected to the ejection power mechanism.

[0023] In an optional embodiment, the ejection mechanism further includes a transition plate, and the transition plate is configured to fix the connecting rod on the ejection plate.

[0024] The wheel casting mold provided by the embodiment of the present application comprises: an upper template; a first mold core, which is mounted on the upper template and fixed relative to the upper template; the shape of the first mold core corresponds to the rim; an ejection mechanism, including a push rod, one end of which is located above the upper template to connect the ejection power mechanism, and the other end passes through the upper template to connect the mold core; the push rod can move up and down relative to the upper template; a second mold core, which is mounted at the lower end of the push rod and can move up and down relative to the upper template under the push of the push rod; the shape of the second mold core corresponds to the hub and the spoke; a plurality of sliders, which are mounted on the upper template or the first mold core and can rotate in the radial direction relative to the upper template and the first mold core; the shape of the slider corresponds to the weight reduction groove. It can be seen that the wheel casting mold of the embodiment of the present application, in view of the situation that a plurality of weight reduction grooves are opened on the inner side where the rim and the spoke are connected, a slider is set on the upper template or the first mold core, and demolding is carried out by rotating relative to the upper template or the first mold core, so that the automobile wheel can be formed once by the casting mold, without cutting after casting, thereby reducing the cost. Therefore, the wheel casting mold of the embodiment of the present application can form the automobile wheel in one step through the casting mold, thereby reducing the cost.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A schematic diagram of a wheel casting mold provided in an embodiment of the present application;

[0028] Figure 2-Figure 5 A schematic diagram of the demoulding process of the wheel casting mold provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 10. Workpiece; 20. Upper template; 21. Pin; 22. Support; 23. Return spring; 24. Spring mounting rod; 30. First mold core; 41. Push rod; 42. Push plate; 43. Connecting rod; 44. Transition plate; 50. Second mold core; 60. Slider; 61. Pin hole; 62. Pull rod; 63. Core pulling block. DETAILED DESCRIPTION

[0031] In order to make the technical solutions and beneficial effects of the present application more obvious and easy to understand, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which the present application belongs.

[0032] In the description of the present application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of simplified description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present application.

[0033] In this application, the terms "first" and "second" are used only for the purpose of clear description and should not be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of this application, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0036] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0037] In view of the technical problems in the related art, the embodiment of the present application provides a wheel casting mold, which is configured to cast an automobile wheel, wherein the automobile wheel comprises a hub, a rim and a spoke, wherein the inner side where the rim and the spoke are connected is provided with a plurality of weight-reducing grooves, and the wheel casting mold comprises an upper mold assembly and a lower mold, wherein the reference Figure 1 , the upper mold assembly comprises:

[0038] Upper template 20;

[0039] A first mold core 30 is mounted on the upper mold plate 20 and fixed relative to the upper mold plate 20; the shape of the first mold core 30 corresponds to the rim;

[0040] The ejection mechanism includes a push rod 41, one end of which is located above the upper mold plate 20 to connect to the ejection power mechanism, and the other end passes through the upper mold plate 20 to connect to the mold core; the push rod 41 can move up and down relative to the upper mold plate 20

[0041] The second mold core 50 is installed at the lower end of the push rod 41 and can move up and down relative to the upper mold plate 20 under the push of the push rod 41; the shape of the second mold core 50 corresponds to the wheel hub and the wheel spokes;

[0042] A plurality of sliders 60 are mounted on the upper mold plate 20 or the first mold core 30 and can rotate in a radial direction relative to the upper mold plate 20 and the first mold core 30; the shape of the sliders 60 corresponds to the setting of the weight-reducing grooves.

[0043] For the convenience of introduction, the blanks, semi-finished parts and finished parts formed in the casting process of the wheel are collectively referred to as workpieces 10.

[0044] It can be understood that during casting, the upper mold assembly and the lower mold of the casting mold are closed, and the mold core forms a cavity for the molten metal to flow into and form the workpiece 10. After the workpiece 10 solidifies, the upper mold assembly and the lower mold are separated, that is, demolded, and the workpiece 10 is taken out to complete a casting process. This is well known to those skilled in the art and will not be described in detail. Since the improvement of the casting mold in the embodiment of the present application is mainly located in the upper mold assembly, only the upper mold assembly is shown in the drawings.

[0045] It is understandable that the mold core can be integrated or composed of multiple mold cores. In this way, it can better conform to the shape of the workpiece 10. The mold core is a general term for the first mold core 30, the second mold core 50, etc. It is understandable that in addition to the mold core of the upper mold assembly, there is also a mold core of the lower mold, which will not be described in detail.

[0046] It can be understood that the mold core forms the mold cavity, and the shape of the workpiece is formed by the molten metal solidifying on the mold core. Therefore, the shape of the mold core is designed and processed according to the shape of the workpiece. For example, the shape of the first mold core 30 corresponds to the rim setting, and the same is true for other mold cores, which will not be described in detail.

[0047] It is understandable that in order to reduce the weight of the wheel, a weight reduction groove is provided. And there are multiple weight reduction grooves, which are distributed at intervals in the circumferential direction. In this way, weight reduction grooves of different sizes can be set for different parts. For example, for the rim near the valve hole, the weight reduction groove is smaller so that the rim near the valve hole has sufficient strength, while the weight reduction groove for the rim in other places can be larger to reduce the weight of the wheel under sufficient strength. This brings difficulties to casting. During casting, the concave direction of the weight reduction groove is inconsistent with the demoulding direction, and there are multiple weight reduction grooves. Therefore, demoulding is more difficult, for example, how to control the power mechanism that provides power to the slider 60 to be applied to multiple sliders 60 at the same time. The present application creatively proposes that the slider 60 is set to be able to rotate in the radial direction relative to the upper mold plate 20 and the first mold core 30, and automatically rotate under the push of the workpiece 10 or other components without additional power; to achieve both smooth demoulding and casting of qualified workpieces 10.

[0048] Specifically, the power mechanism of the ejection mechanism may be a hydraulic press.

[0049] The wheel casting mold of the embodiment of the present application is provided with a plurality of weight-reducing grooves on the inner side where the rim and the spokes meet. A slider 60 is provided on the upper mold plate 20 or the first mold core 30, and the mold is demolded by rotating relative to the upper mold plate 20 or the first mold core 30. The automobile wheel can be formed in one step through the casting mold without the need for cutting after casting.

[0050] In other embodiments of the present application, a rotating device is installed on the upper template 20 or the first mold core 30, and the slider 60 is provided with a rotating mechanism that cooperates with the rotating device. The slider 60 is installed on the upper template 20 or the first mold core 30 by cooperating with the rotating device; during demolding, the workpiece 10 moves downward and squeezes the slider 60 downward, forcing the slider 60 to rotate inwardly around the rotation center of the rotating device until the workpiece 10 is ejected.

[0051] Through the cooperation of the rotating device and the rotating mechanism, the slider 60 can be rotated conveniently and quickly.

[0052] For the specific demoulding process, please refer to Figure 2-Figure 5 As shown, Figure 2 Because demoulding has not yet started, Figure 3 and Figure 4 For the intermediate process of demoulding, Figure 5 For complete disconnection.

[0053] In some other embodiments of the present application, the rotating device includes a pin shaft 21 , and the rotating mechanism includes a pin hole 61 that cooperates with the pin shaft 21 .

[0054] The hole and the shaft are matched, which is convenient for processing and assembly. Specifically, the smoothness of rotation can be improved by providing bearings, lubricating oil, etc.

[0055] In other embodiments of the present application, a downwardly extending support 22 is installed at the bottom of the upper template 20, and the support 22 is provided with a mounting hole extending along the chord direction of the automobile wheel, and the pin shaft 21 is inserted into the mounting hole.

[0056] In this way, the installation of the pin shaft 21 is more convenient, and the pin shaft 21 can be further away from the upper template 20, thereby reducing the interference between the slider 60 and the upper template 20 during rotation.

[0057] In some other embodiments of the present application, the slider 60 includes a pull rod 62 and a core pulling block 63 , the pull rod 62 includes the pin hole 61 ; the core pulling block 63 is configured to be inserted into the weight reduction groove, and the core pulling block 63 is installed at the bottom of the pull rod 62 .

[0058] In this way, it is convenient to process the pull rod 62 and the core pulling block 63 separately. Since the core pulling block 63 directly contacts the workpiece 10 and is subjected to more force during demolding, it requires a material with higher dimensional accuracy and better mechanical comprehensive performance. Therefore, assembling after separate processing is conducive to reducing costs. In addition, setting the slider 60 to include the pull rod 62 and the core pulling block 63 is also conducive to the installation and disassembly of the mold.

[0059] In other embodiments of the present application, the upper template 20 also includes a return spring 23, and the return spring 23 is arranged on the rotation path of the slider 60; when the slider 60 rotates inward, the return spring 23 is compressed; after demolding is completed, the slider 60 is reset under the elastic force of the return spring 23.

[0060] In this way, during casting, the slider 60 can maintain a stable position under the action of elastic force.

[0061] After demoulding, e.g. Figure 5 After the workpiece 10 is taken out, the slide block 60 is reset under the action of the reset spring 23 .

[0062] In other embodiments of the present application, the upper template 20 also includes a spring mounting rod 24 installed on the support 22. The spring mounting rod 24 is L-shaped, with one end installed on the support 22 and the other end extending downward for installing the return spring 23.

[0063] In this way, the spring and the upper template 20 can be conveniently fixed together.

[0064] In some other embodiments of the present application, the ejection mechanism further includes a push plate 42, and the push plate 42 is located above the upper template 20; the bottom of the push plate 42 is connected to the push rod 41, and the top is connected to the ejection power mechanism.

[0065] In this way, it is more convenient to receive the power of the power mechanism.

[0066] In some other embodiments of the present application, the ejection mechanism also includes a connecting rod 43, which is located above the push plate 42; one end of the connecting rod 43 is connected to the push plate 42, and the other end extends upward and is connected to the ejection power mechanism, so that the push plate 42 is connected to the ejection power mechanism.

[0067] In this way, the power mechanism can be connected at a longer distance, reducing the interference between the power mechanism and the mold.

[0068] In some other embodiments of the present application, the ejection mechanism further includes a transition plate 44, which is configured to fix the connecting rod 43 on the push plate 42.

[0069] In this way, the connecting rod 43 can be better fixed.

[0070] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope disclosed in the present application. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present application and do not limit the scope of protection of the patent of this application.

Claims

1. A wheel casting mold, configured to cast an automobile wheel, the automobile wheel comprising a hub, a rim and a spoke, wherein a plurality of weight-reducing grooves are provided on the inner side where the rim and the spoke meet, wherein: The wheel casting mold comprises an upper mold assembly and a lower mold, wherein the upper mold assembly comprises: Upper template; A first mold core is installed on the upper mold plate and fixed relative to the upper mold plate; the shape of the first mold core corresponds to the rim; The ejection mechanism includes a push rod, one end of which is located above the upper mold plate to connect to the ejection power mechanism, and the other end passes through the upper mold plate to connect to the mold core; the push rod can move up and down relative to the upper mold plate A second mold core is installed at the lower end of the push rod and can move up and down relative to the upper mold plate under the push of the push rod; the shape of the second mold core corresponds to the wheel hub and the spokes; A plurality of sliding blocks are installed on the upper mold plate or the first mold core and can rotate in a radial direction relative to the upper mold plate and the first mold core; the shape of the sliding blocks corresponds to the setting of the weight-reducing grooves.

2. The wheel casting mold according to claim 1, characterized in that: A rotating device is installed on the upper mold plate or the first mold core, and the slider is provided with a rotating mechanism that cooperates with the rotating device. The slider is installed on the upper mold plate or the first mold core by cooperating with the rotating device; during demolding, the workpiece moves downward and presses the slider downward, forcing the slider to rotate inward with the rotation center of the rotating device as the axis until the workpiece is ejected.

3. The wheel casting mold according to claim 2, characterized in that: The rotating device comprises a pin shaft, and the rotating mechanism comprises a pin hole matched with the pin shaft.

4. The wheel casting mold according to claim 3, characterized in that: A support extending downward is installed at the bottom of the upper template. The support is provided with a mounting hole extending along the chord direction of the automobile wheel, and the pin shaft is inserted into the mounting hole.

5. The wheel casting mold according to claim 3, characterized in that: The sliding block includes a pull rod and a core pulling block, the pull rod includes the pin hole; the core pulling block is configured to be inserted into the weight reduction groove, and the core pulling block is installed at the bottom of the pull rod.

6. The wheel casting mold according to claim 4, characterized in that: The upper mold plate also includes a return spring, which is arranged on the rotation path of the slider; when the slider rotates inward, the return spring is compressed; after demoulding is completed, the slider is reset under the elastic force of the return spring.

7. The wheel casting mold according to claim 6, characterized in that: The upper mold plate also includes a spring mounting rod installed on the support. The spring mounting rod is L-shaped, one end of which is installed on the support and the other end extends downward for mounting the reset spring.

8. The wheel casting mold according to any one of claims 1 to 7, characterized in that: The ejection mechanism also includes a push plate, which is located above the upper template; the bottom of the push plate is connected to the push rod, and the top is connected to the ejection power mechanism.

9. The wheel casting mold according to claim 8, characterized in that: The ejection mechanism also includes a connecting rod, which is located above the push plate; one end of the connecting rod is connected to the push plate, and the other end extends upward and is connected to the ejection power mechanism, so that the push plate is connected to the ejection power mechanism.

10. The wheel casting mold according to claim 9, characterized in that: The ejection mechanism further includes a transition plate configured to fix the connecting rod on the ejection plate.

Images