Reverse demolding aluminum wheel casting mold

Abstract

The utility model discloses a reverse demolding aluminum wheel casting mold which comprises an upper mold, a bottom mold and two side molds, and the upper mold, the bottom mold and the two side molds define a cavity. A sprue bush is connected to a sprue of the upper mold and is connected to the upper connecting plate; the bottom die is in sliding fit with the bottom plate; the bottom plate is connected to the lower connecting plate; the bottom of the lower connecting plate is connected with an ejection oil cylinder, and the shaft end of the ejection oil cylinder is connected to the bottom die. A guide rod is connected to the bottom plate, a guide hole is formed in the bottom end of the bottom die, and the bottom die is in sliding fit with the guide rod through the guide hole. The bottom end of the bottom die is connected with a baffle, and the shaft end of the ejection oil cylinder is connected to the center of the baffle. Compared with the prior art, the bottom mold is separated from a product to reach a demolding state by utilizing the downward pulling force of the ejection oil cylinder, so that the production efficiency is improved, the whole product is ensured not to deform after being demolded, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub casting moulds, in particular to a reverse demoulding aluminium wheel casting mould. Background Art

[0002] The wheel hub is a cylindrical metal part that supports the tire with its inner profile and is mounted on an axle. It is also called a wheel rim, steel rim, wheel, or tire bell. There are many types of wheel hubs depending on the diameter, width, molding method, and material.

[0003] With the growth of my country's auto parts industry, the wheel processing industry has gradually grown. Aluminum alloy wheels have been widely used in the automotive industry due to their high strength, light weight, good molding and high recycling rate. In the existing technology, the production of aluminum alloy wheels is mostly produced by mold casting.

[0004] Traditional molds use a push pin to remove the material from the upper mold during demoulding. Due to the small contact area between the push pin and the product, it is easy for the product to deform during demoulding, seriously affecting product quality. Utility Model Content

[0005] The utility model aims to provide an aluminum wheel casting mold with reverse demoulding, which utilizes the downward pulling force of the ejection cylinder to separate the bottom mold from the product to reach the demoulding state, thereby not only improving the production efficiency, but also ensuring that the overall demoulding of the product will not cause deformation, thereby ensuring product quality, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A reverse demoulding aluminum wheel casting mold comprises an upper mold, a bottom mold and two side molds, wherein the upper mold, the bottom mold and the two side molds enclose a mold cavity; a gate sleeve is connected to a central gate of the upper mold, and the gate sleeve is connected to an upper connecting plate; the bottom mold is slidably matched to a bottom plate, and the bottom plate is connected to a lower connecting plate; an ejection cylinder is connected to the bottom of the lower connecting plate, and the shaft end of the ejection cylinder is connected to the bottom mold.

[0008] A further improvement of the utility model is that a guide rod is connected to the bottom plate, a guide hole is provided at the bottom end of the bottom mold, and the bottom mold is slidably matched with the guide rod through the guide hole.

[0009] A further improvement of the utility model is that a baffle is connected to the bottom end of the bottom mold, and the shaft end of the ejection oil cylinder is connected to the center of the baffle.

[0010] A further improvement of the utility model is that a notch is provided at the center of the top of the bottom mold, and a diverter cone is connected to the notch.

[0011] A further improvement scheme of the utility model is that it also includes a cooling mechanism; the cooling mechanism includes a liquid inlet pipe and a diverter pipe, the bottom mold, the diverter cone and the baffle together form a sealed cooling chamber, one end of the liquid inlet pipe is connected to the water source, and the other end passes through the baffle into the interior of the cooling chamber, the diverter pipe is connected to the liquid inlet pipe inside the cooling chamber, the diverter pipe is communicated with the liquid inlet pipe, a plurality of spray holes are provided on the diverter pipe, and a liquid return port is provided on the baffle.

[0012] A further improvement of the utility model is that the shunt pipe is in a circular ring shape, and there are two shunt pipes arranged up and down.

[0013] A further improvement of the utility model is that the spray holes are distributed in a ring array on the diversion pipe.

[0014] Beneficial effects of the utility model:

[0015] The reverse demoulding aluminum wheel casting mold of the utility model utilizes the downward pulling force of the ejection oil cylinder to separate the bottom mold from the product to reach a demoulding state, which not only improves the production efficiency but also ensures that the overall demoulding of the product will not cause deformation, thereby ensuring the product quality.

[0016] The reverse demoulding aluminum wheel casting mold of the utility model is additionally provided with a cooling mechanism, and the injected cooling water can quickly cool the product, thereby improving the production efficiency.

[0017] The utility model discloses a reverse demoulding aluminum wheel casting mold, wherein the shunt pipe is in a circular ring shape, and the spray holes are distributed in a circular array on the shunt pipe, thereby ensuring uniform cooling, small thermal stress, and not easy to deform or crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1-upper mold, 2-bottom mold, 3-side mold, 4-cavity, 5-center gate, 6-gate sleeve, 7-upper connecting plate, 8-bottom plate, 9-lower connecting plate, 10-ejection cylinder, 11-guide rod, 12-guide hole, 13-baffle, 14-diverter cone, 15-liquid inlet pipe, 16-diverter pipe, 17-cooling chamber, 18-return liquid port, 19-wheel hub. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Example 1: Figure 1As shown, a reverse demolding aluminum wheel casting mold includes an upper mold 1, a bottom mold 2 and two side molds 3, which together form a cavity 4; a gate sleeve 6 is connected to a central gate 5 of the upper mold 1, and the gate sleeve 6 is connected to an upper connecting plate 7; the bottom mold 2 is slidably fitted to a bottom plate 8, and the bottom plate 8 is connected to a lower connecting plate 9; an ejector cylinder 10 is connected to the bottom of the lower connecting plate 9, and the axial end of the ejector cylinder 10 is connected to the bottom mold 2.

[0022] The bottom plate 8 is connected with a guide rod 11 , and a guide hole 12 is provided at the bottom end of the bottom mold 2 . The bottom mold 2 is slidably matched with the guide rod 11 through the guide hole 12 .

[0023] The bottom end of the bottom mold 2 is connected with a baffle 13 , and the shaft end of the ejection cylinder 10 is connected to the center of the baffle 13 .

[0024] A notch is provided at the center of the top of the bottom mold 2, and a diverter cone 14 is connected to the notch.

[0025] Embodiment 2: This embodiment is a further improvement of Embodiment 1. The main improvement is that Embodiment 1 needs natural cooling during operation, which reduces production efficiency. In this embodiment, the above defects can be avoided. Specifically:

[0026] It also includes a cooling mechanism; the cooling mechanism includes a liquid inlet pipe 15 and a diverter pipe 16, the bottom mold 2, the diverter cone 14 and the baffle 13 together form a sealed cooling chamber 17, one end of the liquid inlet pipe 15 is connected to the water source, and the other end passes through the baffle 13 to enter the cooling chamber 17, the diverter pipe 16 is connected to the liquid inlet pipe 15 inside the cooling chamber 17, the diverter pipe 16 is communicated with the liquid inlet pipe 15, a plurality of spray holes are provided on the diverter pipe 16, and a liquid return port 18 is provided on the baffle 13; the diverter pipe 16 is in a circular ring shape, and there are two diverter pipes 16 arranged up and down; the spray holes are distributed in a circular array on the diverter pipe 16; in this embodiment, a cooling mechanism is added, and the injected cooling water can quickly cool the product, thereby improving production efficiency; in addition, the diverter pipe 16 is in a circular ring shape, and the spray holes are distributed in a circular array on the diverter pipe 16, thereby ensuring uniform cooling, small thermal stress, and not easy to deform and crack.

[0027] Apart from this, this embodiment is exactly the same as Embodiment 1 and will not be described in detail here.

[0028] The specific working principle of the utility model is as follows:

[0029] The utility model is used in conjunction with a casting machine. Before working, the lower connecting plate 9 is installed on the lower machine platform, the upper connecting plate 7 is installed on the oil cylinder shaft end of the upper machine platform, and the two side molds 3 are respectively installed on the two oil cylinder shaft ends on the side.

[0030] During operation, the oil cylinders at the top and both sides extend out, and the upper mold 1, the bottom mold 2 and the two side molds 3 are combined to form a cavity 4, and aluminum liquid is poured into the central gate 5 for casting; after casting, a large amount of cooling water is released through the spray holes of the shunt pipe 16 to quickly cool the wheel hub 19, and the heated cooling water is discharged from the return liquid port 18; then the oil cylinders at the top and both sides retract, the side mold 3 and the upper mold 1 are opened, and the downward pulling force of the ejection cylinder 10 is used to separate the lower mold from the product to reach the demoulding state, and the wheel hub 19 is grabbed by the robot to the next process.

[0031] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A reverse demoulding aluminum wheel casting mold, characterized in that: The mold comprises an upper mold (1), a lower mold (2) and two side molds (3), wherein the upper mold (1), the lower mold (2) and the two side molds (3) enclose a mold cavity (4); a central gate (5) of the upper mold (1) is connected to a gate sleeve (6), and the gate sleeve (6) is connected to an upper connecting plate (7); the lower mold (2) is slidably matched to a bottom plate (8), and the bottom plate (8) is connected to a lower connecting plate (9); an ejection cylinder (10) is connected to the bottom of the lower connecting plate (9), and the shaft end of the ejection cylinder (10) is connected to the lower mold (2).

2. The reverse demoulding aluminum wheel casting mold according to claim 1, characterized in that: The bottom plate (8) is connected to a guide rod (11), a guide hole (12) is provided at the bottom end of the bottom mold (2), and the bottom mold (2) is slidably fitted on the guide rod (11) through the guide hole (12).

3. The reverse demoulding aluminum wheel casting mold according to claim 1, characterized in that: The bottom end of the bottom mold (2) is connected to a baffle (13), and the shaft end of the ejection oil cylinder (10) is connected to the center of the baffle (13).

4. The reverse demoulding aluminum wheel casting mold according to claim 3, characterized in that: A notch is provided at the centre of the top end of the bottom mould (2), and a diverter cone (14) is connected to the notch.

5. The reverse demoulding aluminum wheel casting mold according to claim 4, characterized in that: The invention also comprises a cooling mechanism; the cooling mechanism comprises a liquid inlet pipe (15) and a diverter pipe (16); the bottom mold (2), the diverter cone (14) and the baffle plate (13) together form a sealed cooling chamber (17); one end of the liquid inlet pipe (15) is connected to a water source; the other end passes through the baffle plate (13) and enters the interior of the cooling chamber (17); the diverter pipe (16) is connected to the liquid inlet pipe (15) inside the cooling chamber (17); the diverter pipe (16) is in communication with the liquid inlet pipe (15); a plurality of spray holes are provided on the diverter pipe (16); and a liquid return port (18) is provided on the baffle plate (13).

6. The reverse demoulding aluminum wheel casting mold according to claim 5, characterized in that: The diverter pipe (16) is in the shape of a ring, and there are two diverter pipes (16) arranged one above the other.

7. The reverse demoulding aluminum wheel casting mold according to claim 6, characterized in that: The spray holes are distributed in a ring array on the diversion pipe (16).

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