Multi-die-cavity forming casting die for automobile hub casting

Abstract

The utility model belongs to the technical field of casting molds, and particularly relates to an automobile hub casting multi-mold-cavity forming casting mold which comprises a lower mold base, an upper mold base and a fixed mold base at the bottom. The lower die base and the upper die base are of a multi-cavity structure, a crucible in the fixed die base is divided into a plurality of cavities corresponding to the lower die base through partition plates, the partition plates are cross-shaped staggered plate bodies and fixedly installed in the crucible, and the bottoms of the partition plates and the bottom of the crucible form a communicating chamber of the cavities. According to the utility model, molten metal can be stored in a plurality of cavities corresponding to a plurality of cavities for hub casting in a zoning synchronous control manner, so that the filling speed of the molten metal is kept consistent during casting operation, the redundant molten metal is accelerated to flow when flowing back, and a scouring effect is formed at the same time; the situation that molten metal remains on the inner wall and is solidified is avoided, and it is guaranteed that the flowing speed and flow of the molten metal are kept consistent in the follow-up casting process.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold technology, and in particular relates to a multi-cavity molding casting mold for automobile wheel hub castings. Background Technology

[0002] Automotive wheel casting molds are core process equipment specifically used for the mass production of automotive wheels (commonly known as "steel rims" or "aluminum rims"). Through high-pressure, low-pressure, or gravity casting processes, molten metal (mainly aluminum alloy) is injected into the mold, and after cooling and solidification, a wheel blank that meets the design requirements is formed.

[0003] Currently, wheel hub casting is mostly carried out by casting molds and products one-to-one, which takes a long time and affects production efficiency, resulting in high production costs.

[0004] To address the aforementioned issues, this application proposes a multi-cavity molding die for automobile wheel hub castings. Utility Model Content

[0005] The purpose of this invention is to provide a multi-cavity molding die for automobile wheel hub castings, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a multi-cavity molding die for automobile wheel hub castings, including a lower die base, an upper die base, and a fixed die base at the bottom;

[0008] The lower mold base and the upper mold base are multi-chamber structures. The crucible inside the fixed mold base is divided into multiple chambers corresponding to the lower mold base by partitions. The partitions are cross-shaped plates fixedly installed inside the crucible, and the bottom of the partitions forms a communication chamber between the bottom of the crucible and the bottom of the crucible.

[0009] Liquid injection pipes and air injection pipes are fixedly installed on the outer side of the fixed mold base in different directions;

[0010] A liquid riser is fixedly installed at the lower end of the cavity of the lower mold base, which is connected to the cavity of the crucible. The interior of the liquid riser has a tapered channel that is wider at the bottom and narrower at the top.

[0011] Preferably, the upper center of the partition plate has a circular groove connected to one end of the injection pipe that extends into the fixed mold base.

[0012] Preferably, the crucible has a coaxial annular tube inside, which is sleeved on the outside of the partition.

[0013] Preferably, a tube body communicating with the crucible chamber is fixedly installed on the inner side of the annular tube, and a control valve is installed inside the tube body.

[0014] Preferably, the outer side of the annular tube is provided with a tube body connected to one end of the air injection tube that extends into the fixed mold base.

[0015] Preferably, the inner wall of the conical channel is provided with a spiral flow channel, which is evenly distributed circumferentially inside the riser tube.

[0016] Preferably, the control valve introduces gas into the chamber of the crucible after the annular tube is uniformly filled with gas.

[0017] This utility model has the following beneficial effects:

[0018] This invention divides the crucible into multiple chambers by a partition, and then connects each chamber to the lower mold base via a separate riser pipe. This achieves the effect of simultaneous casting production in multiple mold chambers during low-pressure casting, saving a lot of time, increasing production capacity and reducing costs, while ensuring that the molten metal in multiple chambers is filled synchronously to control the production quality of the wheel hub.

[0019] This invention utilizes a tapered channel that is wider at the bottom and narrower at the top, combined with a spiral flow channel on the inner wall. During the descent of the molten metal after filling, the tapered structure reduces resistance, allowing it to return to the crucible chamber under gravity. The spiral flow channel also allows some of the liquid to flush the molten metal on the inner wall of the tapered channel, thereby preventing solidification and clogging.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the fixed mold base and lower mold base assembly of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the fixed mold base of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the riser tube of this utility model;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] In the picture:

[0028] 11. Lower mold base; 12. Upper mold base; 13. Fixed mold base;

[0029] 111. Riser pipe; 1111. Conical channel; 1112. Spiral flow channel;

[0030] 131. Liquid injection pipe; 132. Gas injection pipe; 133. Crucible; 134. Baffle plate; 135. Annular pipe; 1351. Control valve; 136. Circular groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Please see Figure 1-4 As shown, this utility model is a multi-cavity molding die for automobile wheel hub castings, including a lower die base 11, an upper die base 12, and a bottom fixed die base 13;

[0034] The lower mold base 11 and the upper mold base 12 are multi-chamber structures, with each chamber separated from the others and not connected to each other. The crucible 133 inside the fixed mold base 13 is divided into multiple chambers by a cross-shaped partition 134. Each chamber corresponds to a chamber in the lower mold base 11. The partition 134 is fixedly installed inside the crucible 133, and its bottom and the bottom of the crucible 133 form a connecting chamber for multiple chambers, so that the molten metal in different chambers remains in the same state.

[0035] A liquid injection pipe 131 and an air injection pipe 132 are fixedly installed on the outside of the fixed mold base 13 in different directions, with one end extending outward and the other end extending into the interior of the fixed mold base 13.

[0036] A riser pipe 111 is fixedly installed at the lower end of the cavity of the lower mold base 11 and connects to the cavity of the crucible 133. The riser pipe 111 has a tapered channel 1111 that is thicker at the bottom and thinner at the top. The tapered structure can reduce the resistance when the molten metal flows back and make it slide down quickly, thereby preventing the molten metal from solidifying inside the riser pipe 111.

[0037] Furthermore, a circular groove 136 is provided at the center of the upper end of the partition plate 134, which is connected to one end of the injection pipe 131 that extends into the fixed mold base 13. The lower end of the circular groove 136 is divided into four fan-shaped holes by the partition plate 134, which are connected to the metal liquid chamber.

[0038] Furthermore, a coaxial annular tube 135 is provided inside the crucible 133. A tube body is installed on the outside of the annular tube 135, which is connected to one end of the gas injection tube 132 that extends into the fixed mold base 13. The annular tube 135 is sleeved on the outside of the crucible 133. A tube body communicating with the chamber of the crucible 133 is fixedly installed on the inside of the annular tube 135. A control valve 1351 is installed inside the tube body. In use, gas is first filled into the annular tube 135. After it is fully filled, the control valve 1351 opens the passage to allow gas to be injected into the molten metal chamber, ensuring that the amount of gas injected into different chambers is the same.

[0039] Furthermore, the inner wall of the conical channel 1111 is provided with a spiral flow channel 1112, which is evenly distributed circumferentially inside the riser pipe 111. This allows some of the molten metal to scour the inner wall of the conical channel 1111 during reflux, causing the molten metal and solidified material remaining on its inner surface to fall off.

[0040] It is understood that this utility model can ensure that the molten metal exists in multiple chambers through zoned synchronous control, corresponding to the multiple chambers of wheel hub casting, so as to ensure that the filling speed of the molten metal is consistent during the casting operation, and accelerate the flow when excess molten metal flows back, while forming a flushing effect to avoid the molten metal remaining on the inner wall and solidifying, so as to ensure that the flow speed and flow rate of the molten metal are consistent during subsequent casting.

[0041] A specific application of the operation process in this embodiment is as follows: After mold closing, gas is injected through the gas injection pipe 132, causing the molten metal to rise through the riser pipe 111 in multiple chambers, thereby injecting it into each chamber of the lower mold base 11 individually, thus forming the effect of casting the wheel hub simultaneously in multiple chambers; furthermore, when excess molten metal flows back after casting, the conical structure of the conical channel 1111 causes the residual molten metal to flow downwards, reducing the residue of molten metal under the dual influence of gravity and guidance. Then, through the opening of the spiral flow channel 1112, some molten metal can be flushed against the inner wall of the conical channel 1111, causing some solidified material to be flushed downwards, thereby preventing the molten metal from solidifying and forming impurities in the conical channel 1111, ensuring that each chamber remains in a synchronous state during subsequent casting operations.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-cavity forming casting mold for an automotive wheel hub casting, characterized by: It includes a lower mold base (11), an upper mold base (12), and a fixed mold base (13) at the bottom; The lower mold base (11) and the upper mold base (12) are multi-chamber structures. The crucible (133) inside the fixed mold base (13) is divided into multiple chambers corresponding to the lower mold base (11) by a partition (134). The partition (134) is a cross-shaped plate fixedly installed inside the crucible (133), and its bottom forms a communication chamber with the bottom of the crucible (133) for multiple chambers. The fixed mold base (13) is fixedly installed with a liquid injection pipe (131) and an air injection pipe (132) in different directions on the outside. The lower end of the cavity of the lower mold base (11) is fixedly installed with a liquid riser pipe (111) which is connected to the cavity of the crucible (133). The liquid riser pipe (111) has a tapered channel (1111) that is thicker at the bottom and thinner at the top.

2. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 1, characterized in that: The upper center of the partition (134) has a circular groove (136) connected to one end of the injection pipe (131) that extends into the fixed mold base (13).

3. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 1, characterized in that: The crucible (133) has a coaxial annular tube (135) inside, which is sleeved on the outside of the partition (134).

4. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 3, characterized in that: The inner side of the annular tube (135) is fixedly installed with a tube body that communicates with the chamber of the crucible (133), and a control valve (1351) is installed inside the tube body.

5. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 3, characterized in that: The outer side of the annular tube (135) is provided with a tube body connected to one end of the air injection tube (132) that extends into the fixed mold base (13).

6. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 1, characterized in that: The inner wall of the conical channel (1111) is provided with a spiral flow channel (1112), which is evenly distributed circumferentially inside the riser pipe (111).

7. The multi-cavity forming mold for casting automobile wheel hub castings according to claim 4, characterized in that: The control valve (1351) introduces gas into the chamber of the crucible (133) after the annular tube (135) is uniformly filled with gas.

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