Die locking device and aluminum alloy hub low-pressure casting die

Abstract

The utility model provides a mold locking device and an aluminum alloy hub low-pressure casting mold, and relates to the field of aluminum alloy hub low-pressure casting. The mold locking device comprises a connecting block and two locking assemblies fixedly arranged at the two ends of the connecting block respectively, the connecting block is in threaded connection with a connecting bolt, one end of the connecting bolt can be detachably and fixedly connected to a base of the aluminum alloy hub low-pressure casting mold, and the other end of the connecting bolt penetrates out of the connecting block and is provided with a pressing nut. The locking assembly comprises a locking block and a tightening piece, the locking block is fixedly connected with the connecting block, and the tightening piece is arranged on the locking block and can abut against the corresponding side die. According to the mold locking device, the side mold is in a good closed state or even a completely closed state in a middle pressing and double-side tightening mode, so that the low-pressure casting mold is integrally locked, the aluminum flash defect and the aluminum leakage accident in the mold changing and loading production process can be effectively avoided, the product yield is improved, the production cost is reduced, and the production efficiency is improved. And the safety of field operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting of aluminum alloy wheel hubs, in particular to a mold locking device and a low-pressure casting mold for an aluminum alloy wheel hub. Background Art

[0002] At present, in the aluminum alloy wheel manufacturing industry, there is no effective auxiliary locking means to make the side mold completely closed during the side mold closing process before the low-pressure casting wheel mold is put on the machine. The most widely used heavy hammer impact auxiliary locking cannot achieve this, and it is easy to cause the side mold balance failure and paint peeling due to vibration. At the same time, it is very easy to cause aluminum flash defects and aluminum running during the mold change and machine production process. If the aluminum flash is large, the subsequent wheel will not be able to be clamped for machining, and the processing of aluminum flash defects requires some manpower and material resources, increasing production costs; aluminum running is a safety accident, which is very easy to occur during the first aluminum liquid filling process, and it is dangerous to the operators and equipment on the production site.

[0003] Therefore, a mold locking device is needed to ensure that the side mold of the aluminum alloy wheel hub low-pressure casting mold is well closed. Utility Model Content

[0004] The first purpose of the utility model is to provide a mold locking device to solve the technical problem in the prior art that the side mold of the low-pressure casting mold of the aluminum alloy wheel hub is not closed well, which easily leads to aluminum flash defects or aluminum leakage.

[0005] The mold locking device provided by the utility model is used to lock two adjacent side molds of the low-pressure casting mold of the aluminum alloy wheel hub. The mold locking device comprises a connecting block and two sets of locking components respectively fixedly arranged at both ends of the connecting block. The connecting block is threadedly connected with a connecting bolt. One end of the connecting bolt can be detachably fixedly connected to the base of the low-pressure casting mold of the aluminum alloy wheel hub, and the other end passes through the connecting block and is provided with a compression nut.

[0006] The locking assembly comprises a locking block and a tightening piece, wherein the locking block is fixedly connected to the connecting block, and the tightening piece is arranged on the locking block and can abut against the corresponding side mold.

[0007] Furthermore, the tightening member is a tightening bolt, and the tightening bolt is threadedly connected to the locking block.

[0008] Furthermore, the two tightening bolts are arranged perpendicular to the outer side walls of the corresponding side molds.

[0009] Furthermore, along the circumferential direction, the two tightening bolts in each of the mold locking devices are arranged close to the mating surfaces of the two side molds corresponding to the mold locking device.

[0010] Furthermore, two groups of locking assemblies are symmetrically arranged at two ends of the connecting block.

[0011] Furthermore, the two tightening members are arranged at an angle of 90°, and the mold locking device can be applied to two adjacent side molds arranged at an angle of 90°.

[0012] Furthermore, a fixing ring is provided on the head of the connecting bolt, and the fixing ring can be sleeved on a fixing column provided on the base.

[0013] Furthermore, the axis of the fixing ring is parallel to the axis of the low-pressure casting mold of the aluminum alloy wheel hub.

[0014] The mold locking device provided by the utility model can produce the following beneficial effects:

[0015] When the mold locking device provided by the utility model is used, it is necessary to install the locking device near the closing surfaces of two adjacent side molds during the closing process of the side molds before being put on the machine. Specifically, the connecting bolts in the middle are fixedly connected to the base of the low-pressure casting mold, and the whole locking device is moved close to the side molds through the clamping nut to make the two adjacent side molds initially close to each other, and the tightening operation is performed in cooperation with the tightening pieces on both sides. In this way, the clamping nuts and the tightening pieces are operated alternately, so that the side molds are finally gradually brought into a well-closed or even completely closed state.

[0016] That is, the mold locking device provided by the utility model, the middle connecting block and the connecting bolts and the clamping nut form a nut clamping mechanism, and the locking components on both sides form a clamping mechanism, which can make the side molds reach a good or even completely closed state by means of middle clamping and bilateral clamping, so that the low-pressure casting mold is locked as a whole, thereby effectively avoiding aluminum flash defects and aluminum leakage accidents during the mold change and machine production process, which not only improves the product yield, reduces production costs, but also improves the safety of on-site operations. In addition, the mold locking device has a simple structure, low manufacturing cost, does not require the use of additional power such as electricity, is easy to operate manually, and is also easy to repair and maintain on a daily basis.

[0017] The second purpose of the utility model is to provide an aluminum alloy wheel hub low-pressure casting mold to solve the technical problem in the prior art that the side mold of the aluminum alloy wheel hub low-pressure casting mold is not closed well, which easily leads to aluminum flash defects or aluminum leakage.

[0018] The aluminum alloy wheel hub low-pressure casting mold provided by the utility model comprises a base and a plurality of side molds arranged on the base and surrounding the cavity of the aluminum alloy wheel hub low-pressure casting mold, and two adjacent side molds are arranged at an angle greater than or equal to 90° and less than 180°; the aluminum alloy wheel hub low-pressure casting mold also includes a plurality of the above-mentioned mold locking devices, and the mold locking devices are used to lock two adjacent side molds.

[0019] Furthermore, the number of the side molds is four, and the central angles of the four side molds are all 90°; the included angle between the two tightening members of the mold locking device is 90°.

[0020] The aluminum alloy wheel hub low-pressure casting mold provided by the utility model has all the advantages of the above-mentioned mold locking device, so it is not described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a partial top view of the low-pressure casting mold for an aluminum alloy wheel hub provided in an embodiment of the utility model;

[0023] Figure 2 A schematic top view of the structure of a mold locking device provided in an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 100-mold locking device; 110-connecting block; 120-connecting bolt; 121-fixing ring; 122-pressing nut; 130-locking block; 140-tightening bolt;

[0026] 200-side mold; 300-supporting corner block; 400-base; 410-fixing column. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] This embodiment provides a mold locking device 100 and an aluminum alloy wheel hub low-pressure casting mold including the same. Figure 1 FIG. 1 shows a partial top view of the low-pressure casting mold for an aluminum alloy wheel hub provided in this embodiment. Figure 2 A schematic diagram of the structure of the mold locking device 100 provided in this embodiment is shown in a top view.

[0029] like Figure 1As shown, the aluminum alloy wheel hub low-pressure casting mold provided in this embodiment includes a base 400 and a plurality of side molds 200 arranged on the base 400 and surrounding the cavity of the aluminum alloy wheel hub low-pressure casting mold, and two adjacent side molds 200 are arranged at an angle greater than or equal to 90° and less than 180°; the aluminum alloy wheel hub low-pressure casting mold also includes a plurality of the above-mentioned mold locking devices 100, and the mold locking device 100 is used to lock two adjacent side molds 200.

[0030] like Figure 2 As shown, the mold locking device 100 provided in this embodiment includes a connecting block 110 and two sets of locking components respectively fixedly arranged at both ends of the connecting block 110, the connecting block 110 is threadedly connected with a connecting bolt 120, one end of the connecting bolt 120 can be detachably fixedly connected to the base 400 of the aluminum alloy wheel hub low-pressure casting mold, and the other end passes through the connecting block 110 and is configured with a clamping nut 122; the locking assembly includes a locking block 130 and a tightening piece, the locking block 130 is fixedly connected to the connecting block 110, and the tightening piece is arranged on the locking block 130 and can abut against the corresponding side mold 200.

[0031] When the mold locking device 100 provided in this embodiment is used, it is necessary to install the mold locking device 100 near the closing surface of two adjacent side molds 200 during the closing process of the side molds 200 before being put on the machine. Specifically, the connecting bolt 120 in the middle is fixedly connected to the base 400 of the low-pressure casting mold, and the entire mold locking device 100 is moved close to the side mold 200 through the tightening nut 122 to initially close the two adjacent side molds 200, and the tightening operation is performed with the tightening pieces on both sides. The tightening nut 122 and the tightening piece are operated alternately in this way, so that the side mold 200 gradually reaches a well-closed or even completely closed state.

[0032] That is, the mold locking device 100 provided in this embodiment, the middle connecting block 110 and the connecting bolt 120 and the clamping nut 122 form a nut clamping mechanism, and the locking components on both sides form a clamping mechanism, which can make the side mold 200 reach a good or even completely closed state by means of middle clamping and bilateral clamping, so that the low-pressure casting mold is locked as a whole, thereby effectively avoiding aluminum flash defects and aluminum leakage accidents during the mold change and machine production process, which not only improves the product yield, reduces production costs, but also improves the safety of on-site operations. In addition, the mold locking device 100 has a simple structure, low manufacturing cost, does not require the use of additional power such as electricity, is easy to operate manually, and is also easy to repair and maintain on a daily basis.

[0033] Specifically, in this embodiment, Figure 2As shown, the tightening member is a tightening bolt 140, which is threadedly connected to the locking block 130. By screwing one end of the tightening bolt 140 located outside the locking block 130, the other end of the tightening bolt 140 located inside the locking block 130 can be abutted against the corresponding side mold 200, and the side mold 200 is pushed to be completely molded with its adjacent side mold 200, which is very convenient.

[0034] It should be noted here that, in other embodiments of the present application, the tightening member is not limited to the tightening bolt 140. For example, the tightening member can also be a linear motion driving member such as a cylinder, a hydraulic cylinder or a linear motor. If it is a cylinder, the cylinder body of the cylinder is fixedly installed on the locking block 130, and the gas rod of the cylinder abuts against the corresponding side mold 200; if it is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixedly installed on the locking block 130, and the piston rod of the hydraulic cylinder abuts against the corresponding side mold 200; if it is a linear motor, the body of the linear motor is fixedly installed on the locking block 130, and the output shaft of the linear motor abuts against the corresponding side mold 200. Of course, it can also be other linear motion driving members, which are not listed one by one here.

[0035] Specifically, in this embodiment, Figure 1 As shown, the two tightening bolts 140 are arranged perpendicularly to the outer side wall of the corresponding side mold 200. Because the outer side wall of the side mold 200 is arranged vertically, the tightening bolts 140 are arranged perpendicularly to the outer side wall of the side mold 200, which will make the force applied by the tightening bolts 140 to the side mold 200 in the horizontal direction, so that during the entire locking process or mold closing process, the side mold 200 moves in the horizontal direction, and the horizontality of the side mold 200 will not be destroyed.

[0036] Specifically, in this embodiment, Figure 1 As shown, along the circumferential direction, the two tightening bolts 140 in each mold locking device 100 are arranged close to the mating surfaces of the two side molds 200 corresponding to the mold locking device 100. Because the side mold 200 is usually thin in the middle and thick at both ends, that is, the position close to the mating surface with the adjacent side mold 200 is relatively thick, so the tightening bolts 140 are arranged close to the mating surface, so that the tightening bolts 140 can apply force to the corresponding side mold 200 at the end close to the mating surface, so that the side mold 200 is not easily deformed or damaged. Of course, with such an arrangement, the length of the locking block 130 is relatively short, so that the space occupied by the mold locking device 100 is relatively small, the material used is relatively small, and the cost is relatively low.

[0037] Specifically, in this embodiment, two sets of locking components are symmetrically arranged at both ends of the connecting block 110. In this arrangement, if the extension lengths of the two tightening bolts 140 are the same, the two sets of locking components can make the two side molds 200 on both sides of the same mold closing surface close more quickly during the tightening process of the compression nut 122.

[0038] Specifically, in this embodiment, the head of the connecting bolt 120 is provided with a fixing ring 121, and the fixing ring 121 can be sleeved on the fixing column 410 provided on the base 400. In this way, before closing the mold, it is only necessary to sleeve the fixing ring 121 on the fixing column 410 to start adjusting the compression nut 122 or tightening the bolt 140, which is very convenient; when removing the mold locking device 100, it is also only necessary to remove the fixing ring 121 from the fixing column 410, which is also very convenient.

[0039] Specifically, in this embodiment, Figure 2 As shown, the axis of the fixing ring 121 is parallel to the axis of the low-pressure casting mold of the aluminum alloy wheel hub. With such a configuration, before closing the mold, it is only necessary to put the fixing ring 121 downward on the fixing column 410; when removing the mold locking device 100, it is only necessary to remove the fixing ring 121 upward from the fixing column 410. Of course, in other embodiments of the present application, the axis of the fixing ring 121 may not be parallel to the axis of the casting mold, as long as it can be detachably fixed to the base 400 of the casting mold so as to apply a force to the side mold 200 through the clamping nut 122, the connecting block 110, the locking block 130 and the tightening bolt 140.

[0040] Specifically, in this embodiment, Figure 1 and Figure 2 As shown, the number of side molds 200 is four, and the central angles of the four side molds 200 are all 90°; the two tightening members are set at an angle of 90°, and the two locking blocks 130 are also set at an angle of 90°. However, in other embodiments of the present application, the number of side molds 200 is not limited to four, for example: the number of side molds 200 can also be six, the central angles of the side molds 200 are all 60°, and the angle between two adjacent side molds 200 is 120°. In this case, the angle between the two locking blocks 130 should also be 120°, and the angle between the two tightening bolts 140 is 60°.

[0041] Specifically, in this embodiment, Figure 1 As shown, a supporting angle block 300 is further provided at the angle between two adjacent side molds 200, and the supporting angle block 300 is used to support and limit the side mold 200. Preferably, a cavity is provided at the lower part of the supporting angle block 300 to avoid the fixing column 410 of the base 400, so that the structure of the entire mold is more compact, which is conducive to reducing materials, reducing quality and reducing costs.

[0042] Finally, it should be noted that, in this article, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mold locking device for locking two adjacent side molds (200) of a low-pressure casting mold for an aluminum alloy wheel hub, characterized in that: The mold locking device (100) comprises a connection block (110) and two sets of locking components respectively fixedly arranged at two ends of the connection block (110); the connection block (110) is threadedly connected with a connection bolt (120); one end of the connection bolt (120) can be detachably fixedly connected to the base (400) of the aluminum alloy wheel hub low-pressure casting mold, and the other end passes through the connection block (110) and is provided with a clamping nut (122); The locking assembly comprises a locking block (130) and a tightening piece, wherein the locking block (130) is fixedly connected to the connecting block (110), and the tightening piece is arranged on the locking block (130) and can abut against a corresponding side mold (200).

2. The mold locking device according to claim 1, characterized in that: The tightening member is a tightening bolt (140), and the tightening bolt (140) is threadedly connected to the locking block (130).

3. The mold locking device according to claim 2, characterized in that: The two tightening bolts (140) are both arranged perpendicular to the outer side walls of the corresponding side molds (200).

4. The mold locking device according to claim 3, characterized in that: Along the circumferential direction, the two tightening bolts (140) in each mold locking device (100) are arranged close to the mold joining surfaces of the two side molds (200) corresponding to the mold locking device (100).

5. The mold locking device according to any one of claims 1 to 4, characterized in that: The two groups of locking components are symmetrically arranged at two ends of the connecting block (110).

6. The mold locking device according to claim 5, characterized in that: The two tightening members are arranged at an angle of 90°, and the mold locking device (100) can be applied to two adjacent side molds (200) arranged at an angle of 90°.

7. The mold locking device according to claim 5, characterized in that: The head of the connecting bolt (120) is provided with a fixing ring (121), and the fixing ring (121) can be sleeved on a fixing column (410) provided on the base (400).

8. The mold locking device according to claim 7, characterized in that: The axis of the fixing ring (121) is parallel to the axis of the low-pressure casting mold of the aluminum alloy wheel hub.

9. A low-pressure casting mold for an aluminum alloy wheel hub, characterized in that: The low-pressure casting mold for the aluminum alloy wheel hub comprises a base (400) and a plurality of side molds (200) arranged on the base (400) and surrounding the cavity of the aluminum alloy wheel hub low-pressure casting mold, wherein two adjacent side molds (200) are arranged at an angle greater than or equal to 90° and less than 180°; the low-pressure casting mold for the aluminum alloy wheel hub further comprises a plurality of mold locking devices (100) according to any one of claims 1 to 8, wherein the mold locking devices (100) are used to lock two adjacent side molds (200).

10. The aluminum alloy wheel hub low pressure casting mold according to claim 9, characterized in that: The number of the side molds (200) is four, and the central angles of the four side molds (200) are all 90°; the included angle between the two tightening members of the mold locking device (100) is 90°.

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