Wheel casting mold with anti-deformation structure

Abstract

The utility model discloses a wheel casting mould with an anti-deformation structure, which is characterized in that N anti-deformation studs extending downwards are annularly and uniformly distributed at the bottom of a back cavity of a lower mould body along the center of the back cavity, N is equal to the group number of spokes, the anti-deformation studs are in one-to-one correspondence with spoke casting areas, and inner locking screw holes are formed in the centers of the anti-deformation studs; the anti-deformation ring vertically extends downwards from the bottom of the back cavity of the lower die body and is connected with the N anti-deformation studs in series to form an integrated structure. A center mounting platform is arranged in the center of the lower die plate, the center mounting platform clings to and supports the anti-deformation ring, and the inner locking screw holes are in one-to-one correspondence with and are connected with the inner locking unthreaded holes in the center mounting platform; according to the casting mold, an anti-deformation stud is arranged in a spoke casting area, the deformation stud is locked to provide downward pulling force to prevent a lower mold body from deforming upwards, and an anti-deformation ring prevents the lower mold body from collapsing downwards; the anti-deformation stud and the anti-deformation ring are of an integrated structure, so that local deformation and lateral deformation are prevented; the anti-deformation structure can improve blank deformation and window flash, improve product consistency and prolong the service life of the die.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a wheel casting mold with an anti-deformation structure. Background Art

[0002] Aluminum alloy wheel manufacturing is a material-intensive, labor-intensive, low-value-added industry. In addition, aluminum casting is an industry with high energy consumption and poor working conditions for workers. Therefore, companies must continue to innovate to improve product quality and reduce costs to ensure sustainable development. During the production process of low-pressure casting aluminum alloy wheel molds, the internal heat of the new mold will produce certain internal stress, causing the lower mold body to deform upward and the blank to deform toward the flange surface. When the mold life reaches a certain number, the internal stress of the lower mold begins to decrease, the mold hardness begins to decrease, the lower mold gradually deforms downward, and the blank deforms toward the front of the blank. Due to the large number of orders for a single wheel type of the company, multiple sets of molds are required to be produced online at the same time. There are certain differences in the life of the molds, which will lead to inconsistent deformation of the production blanks, increase the difficulty of the machining process and increase the production scrap. The anti-deformation structure design of the casting mold is particularly important. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a wheel casting mold with an anti-deformation structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A wheel casting mold with an anti-deformation structure comprises a lower mold body and a lower mold plate, wherein N anti-deformation studs extending vertically downward are evenly arranged along the center ring of the bottom of the back cavity of the lower mold body, N = the number of wheel spoke groups, and the anti-deformation studs correspond one-to-one with the spoke casting area on the front side of the lower mold body, and the anti-deformation studs are provided with inner locking screw holes along the center, the anti-deformation ring is concentric with the back cavity of the lower mold body, extends vertically downward from the bottom of the back cavity of the lower mold body, and connects N anti-deformation studs in series to form an integrated structure; a central mounting platform is provided at the center of the lower mold plate, and N inner locking light holes are evenly arranged along the center ring of the upper edge of the central mounting platform, the central mounting platform closely supports the anti-deformation ring, and at the same time, the inner locking screw holes correspond one-to-one with the inner locking light holes and are bolted.

[0006] Furthermore, the end edge of the back cavity of the lower mold body is used to install the outer ring, and a stepped outer ring is arranged on the outer peripheral surface of the installation outer ring. The installation outer ring cooperates with the outer installation ring groove on the lower mold plate, and the stepped outer ring is clamped outside the outer installation ring groove. Several external locking screw holes are evenly arranged circumferentially on the installation outer ring, and the external locking screw holes correspond one by one to the external locking light holes on the outer installation ring groove and are bolted together.

[0007] Furthermore, a positioning cylinder is protruding downward from the center of the back cavity of the lower mold body, the anti-deformation ring is located outside the positioning cylinder, a positioning hole is opened in the center of the central mounting platform, a positioning step is provided on the positioning cylinder, the positioning cylinder is plugged into the positioning hole, and the positioning step is clamped on the central mounting platform.

[0008] Furthermore, at least two azimuth positioning keys are evenly embedded in a ring shape at the bottom of the outer mounting ring groove, and the azimuth positioning keys protrude from the bottom surface of the outer mounting ring groove. Correspondingly, an azimuth positioning groove that cooperates with the azimuth positioning keys for quick positioning is provided on the mounting outer ring.

[0009] Compared with the prior art, the wheel casting mold with an anti-deformation structure of the utility model has the following beneficial effects:

[0010] The casting mold is provided with anti-deformation studs at the corresponding positions of the spoke casting area, and the anti-deformation studs are locked together with the lower mold plate by bolts. When the lower mold body is heated to generate internal stress and deform upward, the deformed studs are locked to give downward pulling force to improve the upward deformation of the lower mold body. At the same time, the anti-deformation ring can not only support the spoke casting area of ​​the lower mold body, but also prevent the lower mold body from collapsing. The anti-deformation studs and the anti-deformation ring are an integrated structure, which can not only prevent local deformation of the lower mold body caused by single-point locking, but also prevent lateral deformation of the anti-deformation studs, thereby further improving the supporting strength of the anti-deformation ring. Therefore, adding an anti-deformation structure to the lower mold body can improve the deformation of the blank and the flash of the blank window, thereby improving the molding consistency of the product. At the same time, the structural strength of the lower mold body is better, and the ability to resist alternating cold and hot temperature fields is strong, thereby preventing its deformation and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the assembly structure of the casting mold of the utility model;

[0012] Figure 2 for Figure 1 Structural diagram of the middle and lower templates;

[0013] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle and lower mold bodies;

[0014] Figure 4 for Figure 1 Schematic diagram of the top view of the middle and lower mold bodies.

[0015] In the figure: 1. lower mold body; 11. stepped outer ring; 12. anti-deformation ring; 121. anti-deformation stud; 13. positioning cylinder; 131. positioning step; 14. mounting outer ring; 141. outer locking screw hole; 142. azimuth positioning groove; 2. lower template; 21. center mounting platform; 211. inner locking light hole; 22. outer mounting ring groove; 221. outer locking light hole; 222. azimuth positioning key; 23. positioning hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] This embodiment provides a wheel casting mold with an anti-deformation structure, such as Figure 1-Figure 4 As shown, by adding an anti-deformation structure to the connection structure of the lower mold body 1 and the lower template 2, the deformation of the lower mold body 1 and the molding quality of the blank during the production process are improved. The front of the lower mold body 1 is the wheel casting area, and the back is the back cavity. The lower mold body 1 is installed in the outer mounting ring groove 22 on the lower template 2 through the mounting outer ring 14 at the end edge of the back cavity, which serves as the end edge support of the lower mold body 1. The middle part of the lower mold body 1 protrudes downward to form a positioning cylinder 13, and the positioning cylinder 13 is supported in the middle by the central mounting platform 21 on the lower template 2;

[0018] Since the back cavity has a large surface area and there is a spoke casting area, it is easy to deform during the casting process due to the influence of the cold and hot temperature fields. Therefore, anti-deformation studs 121 and anti-deformation rings 12 are provided for support and fastening. Figure 3-Figure 4 As shown, the bottom protrusion of the back cavity of the lower mold body 1 extends vertically downward to form N anti-deformation studs 121, and the N anti-deformation studs 121 are evenly distributed in a ring along the molding center of the lower mold body 1. The number of the anti-deformation studs 121 is consistent with the number of spoke groups. Each spoke group forms a spoke casting area on the front of the lower mold body 1. The anti-deformation studs 121 should be located one by one directly below the corresponding spoke casting area. As an anti-deformation support for the spoke casting area, the anti-deformation studs 121 are provided with inner locking screw holes along the center for locking with the lower mold plate 2 to limit the upward deformation of the lower mold body 1; at the same time, the bottom protrusion of the back cavity of the lower mold body 1 extends vertically downward to form an anti-deformation ring 12 of a certain thickness, which is used to provide a third support to prevent the back cavity area of ​​the lower mold body 1 from collapsing. The anti-deformation ring 1 2 has a thickness equal to or less than the outer diameter of the anti-deformation stud 121. Similarly, the anti-deformation ring 12 is concentrically arranged with the molding center of the lower mold body 1. N anti-deformation studs 121 are distributed on the anti-deformation ring 12, and the two are an integrated structure, which not only prevents local deformation of the mold caused by single-point locking, but also prevents the anti-deformation stud 121 from being too thin and causing lateral deformation during use. Similarly, the anti-deformation ring 12 combined with the anti-deformation stud 121 can further increase the overall supporting force. In order to increase the supporting area, the lower end of the anti-deformation stud 121 is located on the lower end surface of the anti-deformation ring 12, and the two jointly construct an installation plane; in addition, in order to form a consistent anti-deformation capability, the anti-deformation ring 12 should pass through and be connected in series with the center of the anti-deformation stud 121;

[0019] The lower mold plate 2 is used to support the lower mold body 1 for anti-deformation fastening and support. Accordingly, a central mounting platform 21 is arranged at its center. The mounting plane rests on the central mounting platform 21 for support. The central mounting platform 21 is provided with N internal locking light holes 211. After the fastening connection of the outer ring 14 is installed on the lower mold body 1, the internal locking light holes 211 correspond to the internal locking screw holes one by one and are fastened with bolts.

[0020] As a further technical solution, the outer ring 14 is installed to cooperate with the outer installation ring groove 22 on the lower template 2 to position the outer peripheral surface of the lower end of the lower mold body 1. At the same time, the outer peripheral surface of the installation outer ring 14 at the back cavity end edge of the lower mold body 1 is provided with a step outer ring 11, and the step outer ring 11 is clamped outside the outer installation ring groove 22 for rapid positioning and forming dislocation. The installation outer ring 14 is evenly provided with a plurality of outer locking screw holes 141 in the circumferential direction. The outer locking screw holes 141 correspond to the outer locking light holes 221 on the outer installation ring groove 22 one by one and are bolted to support the back cavity end edge of the lower mold body 1 and tighten to limit deformation.

[0021] The positioning cylinder 13 serving as the second support has a positioning step 131 on the circumferential surface of the lower end thereof. The positioning step 131 abuts against the central mounting platform 21 to support the middle portion of the lower mold body 1 to prevent the middle portion from collapsing. In addition, in order to limit the lateral deformation of the positioning cylinder 13, a positioning hole 23 is provided at the center of the central mounting platform 21 on the lower mold plate 2. The lower end of the positioning cylinder 13 is inserted into the positioning hole 23. The insertion limit can also ensure that the center of the lower mold body 1 coincides with the center of the lower mold plate 2 to prevent the molding center of the lower mold body 1 from shifting due to deformation.

[0022] As a further technical solution, in order to solve the problem of quickly locking the outer locking screw hole 141 and the outer locking light hole 221 after the lower mold body 1 and the lower mold plate 2 are buckled together, as shown in FIG. Figure 2 and Figure 4 As shown, at least two azimuth positioning keys 222 are evenly embedded and fixed in a ring shape at the bottom of the outer mounting ring groove 22. The azimuth positioning keys 222 should be close to the outer locking light hole 221 and arranged radially along the outer mounting ring groove 22. Correspondingly, an azimuth positioning groove 142 is arranged on the mounting outer ring 14. Both ends of the azimuth positioning groove 142 pass through the inner and outer wall surfaces of the mounting outer ring 14. The azimuth positioning keys 222 are clamped on the upper end surface of the mounting outer ring 14 to support the upper mold body. When the lower mold body 1 is rotated to the correct locking position, the azimuth positioning keys 222 fall into the azimuth positioning groove 142 and quickly correspond to the outer locking screw hole 141 and the outer locking light hole 221. At this time, the mounting outer ring 14 accurately falls into the outer mounting ring groove 22.

[0023] The directional words such as "upper", "lower", "inner", "end", and "side" mentioned in this article are based on Figure 1-Figure 4The coordinates or orientations shown in the figure are used for further explanation. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have specific orientations, or to be constructed and operated in specific orientations;

[0024] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the terms "on" and "inside" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel casting mold with an anti-deformation structure, comprising a lower mold body and a lower mold plate, characterized in that: N anti-deformation studs extending vertically downward are evenly arranged along the center ring at the bottom of the back cavity of the lower mold body, N = the number of wheel spoke groups, and the anti-deformation studs correspond one-to-one with the spoke casting area on the front side of the lower mold body, and an inner locking screw hole is opened along the center of the anti-deformation stud. The anti-deformation ring is concentric with the back cavity of the lower mold body, extends vertically downward from the bottom of the back cavity of the lower mold body, and connects N anti-deformation studs in series to form an integrated structure; a central mounting platform is provided at the center of the lower template, and N inner locking light holes are evenly opened along the center ring on the central mounting platform. The central mounting platform tightly supports the anti-deformation ring, and at the same time, the inner locking screw holes correspond one-to-one with the inner locking light holes and are bolted.

2. The wheel casting mold with an anti-deformation structure according to claim 1, characterized in that: The end edge of the back cavity of the lower mold body is an installation outer ring, and the outer circumferential surface of the installation outer ring is provided with a stepped outer ring, and the installation outer ring cooperates with the outer installation ring groove on the lower mold plate, and the stepped outer ring is clamped outside the outer installation ring groove, and a plurality of external locking screw holes are evenly arranged circumferentially on the installation outer ring, and the external locking screw holes correspond one by one to the external locking light holes on the outer installation ring groove and are bolted together.

3. The wheel casting mold with an anti-deformation structure according to claim 2, characterized in that: A positioning cylinder is protruding downward from the center of the back cavity of the lower mold body, the anti-deformation ring is located outside the positioning cylinder, a positioning hole is opened at the center of the central mounting platform, a positioning step is provided on the positioning cylinder, the positioning cylinder is plugged into the positioning hole, and the positioning step is clamped on the central mounting platform.

4. The wheel casting mold with an anti-deformation structure according to claim 3, characterized in that: At least two azimuth positioning keys are evenly embedded in a ring at the bottom of the outer mounting ring groove, and the azimuth positioning keys protrude from the bottom surface of the outer mounting ring groove. Correspondingly, the mounting outer ring is provided with azimuth positioning grooves that cooperate with the azimuth positioning keys for quick positioning.

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