CN106799473A - A kind of casting aluminium alloy wheel hub device - Google Patents

Abstract

The invention discloses an aluminum alloy wheel hub casting device, comprising a casting platform, characterized in that: there is a casting mold on the casting platform, and the casting mold includes a top mold, a bottom mold and multiple groups of symmetrically arranged side molds. The bottom of the platform is provided with a lower bracket, and the bottom mold is arranged on the lower bracket. There is an upper bracket above the casting platform, and the top mold is arranged on the upper bracket. The top surface of the casting platform is located below each side mold. Guide rail, the outer side of the casting platform is provided with a feeding rail and a feeding rail, one end of the feeding rail is connected to the feeding rail, and the other end of the feeding rail extends to the bottom of the bottom mold, and each side mold includes a side template and a base plate , a push cylinder is fixedly arranged above the base plate, and the side template is slidably arranged on the inner surface of the base plate. Spray system connection.

Description

An aluminum alloy wheel hub casting device

technical field

The invention relates to a casting device, in particular to an aluminum alloy wheel hub casting device.

Background technique

The casting process of aluminum alloy wheels includes the following steps: the mold needs to be installed on the casting machine, the mold is clamped, and aluminum water is poured into the mold cavity; after the casting is completed, the wheel hub needs to be cooled; after the cooling is completed, the mold is opened, and the wheel hub take out. However, in the existing wheel hub casting process, the degree of automation is not high, and the degree of manual participation is high. In addition, there are three commonly used casting methods for aluminum alloy wheels: gravity casting, forging and low-pressure precision casting. Among them, gravity casting is to use gravity to pour aluminum alloy solution into the mold, and after forming, it can be processed and polished by lathe to complete the production. Because of its simple manufacturing process, no precision casting process, low cost and high production efficiency, it is adopted by most manufacturers. However, in the production process, in this method of aluminum alloy casting and forming the wheel hub, the hub casting in the mold is placed horizontally, in other words, the radial plane of the hub is placed horizontally, so the mold of the hub consists of the upper mold, The lower mold and the side mold are composed. One end of the wheel hub with a web is located at the lower part of the mold, and the free end of the other end is located at the upper part of the mold, and a side riser should be set at the edge of the free end. Since the thickness of the edge is relatively thin, it is the last Cool and solidify the part, therefore, the fast water cooling is easy to produce casting defects such as air bubbles, shrinkage porosity and pinholes at the edge of the hub; and, in this case, the casting is easy to become in the free end of the rim after demolding Oval.

Contents of the invention

The technical problem to be solved by the present invention is to provide an aluminum alloy wheel hub casting device based on the current state of the art, which can automate wheel hub casting and at the same time prevent casting defects such as air bubbles, shrinkage porosity and pinholes at the edge of the casting.

The technical solution adopted by the present invention to solve the above technical problems is: an aluminum alloy wheel hub casting device, including a casting platform, characterized in that: a casting hole is opened on the casting platform, and the casting hole is located on the casting platform A casting mold is provided, and the casting mold includes a top mold, a bottom mold and a plurality of sets of symmetrically arranged side molds, the top mold, bottom mold and side molds form a cavity for forming the hub, and a lower mold is erected below the casting platform. A column, the lower column is slidably provided with a lower bracket, the lower bracket is driven by a lower cylinder, the bottom mold is arranged on the lower bracket, and an upper column is erected above the casting platform, and an upper column is slidably arranged on the upper column. Support, the upper support is driven by an upper cylinder, the top mold is arranged on the upper support, and a guide rail is arranged on the top surface of the casting platform below each side mold, and each side mold is connected with a pusher on the corresponding guide rail. The side mold cylinder of the upper movement is connected. The outer side of the casting platform is provided with a feeding rail and an upper feeding rail. One end of the upper feeding rail is connected with the feeding rail, and the other end of the upper feeding rail extends to the bottom of the bottom mold. There is a support rod for transporting the hub on the material rail. The support rod enters the upper material rail from one end of the material rail, and then exits from the upper material rail to return to the material rail, and unloads from the other end of the material rail. The bottom mold is provided with a cooling channel, and each of the side molds includes a side formwork for forming the hub and a base plate for setting the side formwork, a push cylinder is fixedly arranged above the base plate, and the side formwork is slidably arranged on the On the inner side of the base plate, the output shaft of the push cylinder is connected to the upper end of the side template, and multiple rows of spray heads are arranged in a row on the inner side of the base plate, and the multiple rows of spray heads are connected to a spray system.

Further, multiple rows of spray heads are arranged in a row on the inner surface of the substrate, the spray heads are arranged crosswise with the spray heads, and the multiple rows of spray heads are connected to an air spray system. By setting up the air injection system, the dual cooling of castings by air injection and spray is realized.

Furthermore, a dovetail groove is opened on the inner side of the base plate, and the spray head and the air spray head are placed at the bottom of the dovetail groove. By setting the dovetail groove, the stability of the movement between the base plate and the side template is improved.

Furthermore, a protrusion is formed on the inner side wall of the base plate at the bottom of the base plate, and the protrusion is formed with a slot for seating the bottom side of the side template, and the slot has the function of limiting and positioning the side template .

As a further improvement, a conical rotating body is provided for rotation at the top of the hub rod. By setting the rotating body, the wheel hub after casting and cooling is placed on the rotating body, which facilitates the setting of the wheel hub on the hub rod.

Compared with the prior art, the present invention has the advantages that: the lower cylinder, the upper cylinder and the side mold cylinder move, and the bottom mold, the top mold and the side mold are pressed against each other to form the hub casting cavity, and the casting machine injects aluminum into the cavity. Then, the bottom mold passes through cooling water, and the thicker part of the lower end of the casting is cooled first by using water cooling. The hub rod supports the hub, and under the action of the sliding cylinder, the side mold is separated, and the cylinder is pushed to move. The side mold separates the substrate, so that the spray head of the substrate is aligned with the casting. The spray system cools the thinner part of the casting with water mist, so that The original uppermost part of the casting is cooled and solidified at the same time. Therefore, casting defects such as air bubbles and shrinkage porosity at the upper edge of the hub are avoided; and, when the uppermost part of the casting is fully cooled and solidified, the wheel rim After demoulding, the phenomenon of ellipse is not easy to appear. After the cooling is completed, the top mold and side molds are completely opened, and the hub returns to the other end of the feeding rail along with the hub rod through the lower rail, and the hub is sent away. Realized the automation of the whole wheel manufacturing.

Description of drawings

Fig. 1 is a schematic structural view of an aluminum alloy wheel hub casting device in an embodiment of the present invention;

Fig. 2 is the structural representation of casting mold in the embodiment of the present invention;

Fig. 3 is the structural representation of side form in Fig. 2;

FIG. 4 is a partially exploded schematic view of FIG. 3 .

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, the aluminum alloy wheel hub casting device in this implementation includes a casting machine, a casting platform 8, a casting mold, a lower column 71, a lower bracket 711, a lower cylinder, an upper column 72, an upper bracket 721, and an upper cylinder. , guide rail 73, side mold cylinder, walking material rail 61, upper material rail 62, hub bar 64, push cylinder 5, spray nozzle 211, spray system, air nozzle 212 and air injection system. Preferably, the number of side molds 2 is four.

Wherein, a casting hole 81 is provided on the casting platform 8, and a casting mold is arranged at the casting hole 81 on the casting platform 8, and the casting mold includes a top mold 1, a bottom mold 3 and a plurality of groups of symmetrically arranged side molds 2. The mold 1, the bottom mold 3 and the side mold 2 form a cavity 5 for forming the wheel hub. A lower column 71 is erected below the casting platform 8, and a lower bracket 711 is slidably arranged on the lower column 71. The lower bracket 711 is formed by Driven by a lower air cylinder, the bottom mold 3 is arranged on the lower bracket 711, an upper column 72 is erected above the casting platform 8, and an upper bracket 721 is slidably arranged on the upper column 72, and the upper bracket 721 is formed by an upper cylinder. Drive, the top mold 1 is arranged on the upper bracket 721, and the top surface of the casting platform 8 is provided with a guide rail 73 below each side mold 2, and each side mold 2 is pushed to move on the corresponding guide rail 73. The side mold cylinder of the casting platform 8 is provided with a feeding rail 61 and an upper feeding rail 62, one end of the upper feeding rail 62 is connected with the feeding rail 61, and the other end of the upper feeding rail 62 extends to the bottom mold 3. Below, the feeding rail 61 is provided with a hub support rod 64 for transporting the hub 5 , and further, a conical rotating body 641 is provided on the top of the hub support rod 64 for rotation. By setting the rotating body 641, the wheel hub 5 after casting and cooling is placed on the rotating body 641, which facilitates the setting of the wheel hub 5 on the hub bar 641, and the hub bar 64 enters the upper material rail 62 from one end of the feeding rail 61 , and then withdraw from the feeding rail 62 and return to the feeding rail 61, and discharge the material from the other end of the feeding rail 61. The bottom mold 3 is provided with a cooling water channel, and the bottom of each side mold 2 is provided with a guide rail 73. Each of the Each side mold 2 is connected with a sliding cylinder, and each side mold 2 includes a side template 22 for forming the hub 6 and a base plate 21 for setting the side template 22, and a push cylinder 5 is fixedly arranged above the base plate 21. , the side template 22 is slidably arranged on the inner surface of the base plate 21, specifically, a dovetail groove is opened on the inner surface of the base plate 21, and the spray head 211 and the air spray head 212 are placed at the bottom of the dovetail groove. The groove improves the stability of the movement between the base plate 21 and the side template 22, the output shaft of the push cylinder 5 is connected to the upper end of the side template 22, and multiple rows of spray heads 211 are arranged on the inner side of the base plate 21 , the multi-row spray heads 211 are connected to a spray system.

Further, multiple rows of spray heads 212 are arranged in a row on the inner side of the substrate 21 , the spray heads 212 are arranged crosswise with the spray heads 211 , and the multiple rows of spray heads 212 are connected to an air spray system. By setting up the air injection system, the dual cooling of castings by air injection and spray is realized.

In addition, a protrusion 213 is formed on the inner side wall of the base plate 21 at the bottom of the base plate 21, and the protrusion 213 is formed with a locking groove 214 for the bottom side of the side template 22 to be seated. and positioning.

To sum up, the lower cylinder, the upper cylinder and the side mold cylinder move, and the bottom mold 3, top mold 1 and side mold 2 are pressed against each other to form a hub casting cavity, and the casting machine injects aluminum water into the cavity, and then the bottom mold 3 Through the cooling water, the thicker part of the lower end of the casting is cooled first by water cooling. Under the action of the lower cylinder, the bottom mold 3 is withdrawn, and the support hub rod 64 enters the lower part of the bottom mold 3 from the feeding rail through the upper material rail, and the support hub rod 64 Support the hub 5, and then under the action of the sliding cylinder, separate the side mold 2, push the cylinder 5 to move, the side mold 22 separates the base plate 21, so that the spray head of the base plate 21 is aimed at the casting, and the spray system sprays water on the thinner part of the upper end of the casting. Mist cooling, so that the original uppermost part of the casting is cooled and solidified at the same time, so that casting defects such as air bubbles and shrinkage porosity are avoided at the upper edge of the hub 5; and, when the uppermost part of the casting is fully cooled and solidified, The rim at this place is not easy to appear oval phenomenon after demoulding, after cooling is completed, the top mold 1 and the side mold 2 are all fully opened, and the hub 5 returns to the feeding rail along with the hub rod 64 through the lower feeding rail 62 The other end of 61 sends the wheel hub 5 away, thereby realizing the automation of the whole wheel hub manufacturing.

Claims (5)

1. An aluminum alloy wheel hub casting device, comprising a casting platform (8), characterized in that: a casting hole (81) is provided on the casting platform (8), and a casting hole (81) is located on the casting platform (8). (81) place is provided with a casting mold, and this casting mold comprises top mold (1), bottom mold (3) and the side mold (2) of many groups of symmetrical arrangement, described top mold (1), bottom mold (3) and The side mold (2) forms a cavity for forming the hub (6), and a lower column (7) is erected below the casting platform (8), and a lower bracket (711) is slidably arranged on the lower column (71), The lower bracket (711) is driven by a lower cylinder, the bottom mold (3) is arranged on the lower bracket (711), and an upper column (72) is erected above the casting platform (8), and the upper column (72 ) is slidingly provided with an upper bracket (721), the upper bracket (721) is driven by an upper cylinder, the top mold (1) is arranged on the upper bracket (721), and the top surface of the casting platform (8) is located on A guide rail (73) is provided below each side mold (2), and each side mold (2) is connected with a side mold cylinder that pushes it to move on the corresponding guide rail, and a material feeding platform (8) is provided on the outside of the casting platform (8). Rail (61) and upper material rail (62), one end of upper material rail (62) is connected with walking material rail (61), and the other end of upper material rail (62) extends to the below of bottom mold (3), described The feeding rail (61) is provided with a hub bar (64) for transporting the hub, and the hub bar (64) enters the feeding rail (62) from one end of the feeding rail (61), and then from the feeding rail (62) ) exit back to the feeding rail (61), blanking from the other end of the feeding rail (61), the bottom mold (3) is provided with a cooling channel, and each side mold (2) includes a The side formwork (22) of the hub (6) and the base plate (21) for setting the side formwork (22), a push cylinder (5) is fixedly arranged above the base plate (21), and the side formwork (22) slides It is arranged on the inner surface of the base plate (21), the output shaft of the push cylinder (5) is connected to the upper end of the side template (22), and multiple rows of spray heads (211) are arranged on the inner surface of the base plate (21). ), the multi-row spray heads (211) are connected with a spray system. 2. The aluminum alloy wheel hub casting device according to claim 1, characterized in that: multiple rows of air spray heads (212) are arranged in a row on the inner surface of the base plate (21), and the air spray heads (212) are connected with the The spray heads are arranged crosswise, and the multiple rows of spray heads (212) are connected with an air spray system. 3. The aluminum alloy wheel hub casting device according to claim 2, characterized in that: a dovetail groove is opened on the inner side of the base plate (21), and the spray head (211) and the air spray head (212) are placed in the The bottom of the dovetail groove. 4. The aluminum alloy wheel hub casting device according to claim 3, characterized in that: a protrusion (213) is formed on the inner side wall of the base plate (21) at the bottom of the base plate (21), and the protrusion (213) A card slot (214) for seating the bottom side of the side template (22) is formed on the top. 5. The aluminum alloy wheel hub casting device according to claim 4, characterized in that: a conical rotating body (641) is provided for rotation on the top of the hub rod (64).