Box type part die casting exhaust structure

Abstract

The utility model discloses a kind of box body class parts die-casting exhaust structure, include hydraulic exhaust device and wave plate exhaust device, the hydraulic exhaust device include hydraulic fixed mould exhaust block and hydraulic movable mould exhaust block, hydraulic valve assembly is equipped between the hydraulic fixed mould exhaust block and hydraulic movable mould exhaust block, the upper of the hydraulic fixed mould exhaust block is equipped with filter core ware, the wave plate exhaust device include wavy wave plate movable mould exhaust block and wavy wave plate fixed mould exhaust block, the wave plate movable mould exhaust block and wave plate fixed mould exhaust block are separably connected. The box body class parts die-casting exhaust structure can realize wave plate exhaust and hydraulic exhaust cooperation, both can have wave plate exhaust effect good advantage, also can have hydraulic exhaust operation simple and easy wide applicability advantage, better control product quality, improve product pass rate.

Description

Technical Field

[0001] This utility model relates to a die-casting equipment, and more specifically, to a die-casting venting structure for box-type parts. Background Technology

[0002] Under high temperature and pressure, die-casting molds generate a large amount of gas, which can negatively impact the product. Molten metal enters the mold through the injection port, fully filling the mold cavity and gradually cooling and solidifying. During this process, because the waste gas inside the mold cavity cannot be completely eliminated, defects such as porosity, cold shuts, and poor molding occur in the product, resulting in a low product quality pass rate and reduced production efficiency.

[0003] Venting plays a crucial role in the die-casting process. To improve production efficiency and reduce product scrap rates, a new venting method has been designed. This design significantly reduces product defect rates, improves work efficiency, and saves production costs.

[0004] There are two existing methods for venting gas in die-casting products: corrugated plate venting and hydraulic venting. The principle of a hydraulic venting valve in die-casting is to control the opening and closing of the valve by utilizing pressure changes in the hydraulic system, thereby venting air or other incompressible gases from the system. A hydraulic venting valve typically consists of a valve body, spring, piston, and sealing rings. When the pressure in the hydraulic system increases, the pressure pushes the piston away from the valve seat, opening the valve body and allowing air or gas to escape through the valve port; when the pressure in the system decreases, the spring returns the piston to its original position, closing the valve body. The principle of a corrugated plate venting valve in die-casting is to extract gas from the mold cavity using a vacuum system, thereby reducing the contact between the molten metal and gas during the filling process, improving product quality and precision. However, both venting methods have their own advantages and disadvantages. Corrugated plate venting has a wide range of applications, good venting effect, and stable quality control, but it has higher equipment costs, more complex maintenance, and limited applicability; hydraulic venting has lower costs, simpler operation, and wider applicability, but its venting effect is limited and its quality control is unstable. Utility Model Content

[0005] Therefore, it is necessary to provide a die-cast venting structure for box-type parts to address the aforementioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A die-casting venting structure for box-type parts, characterized in that the die-casting venting structure comprises a pair of hydraulic venting devices and a pair of wave plate venting devices. The hydraulic venting device includes a hydraulic fixed mold venting block and a hydraulic moving mold venting block, with a hydraulic valve assembly between the two blocks. A filter element is located above the hydraulic fixed mold venting block. The wave plate venting device includes a wave-shaped moving mold venting block and a wave-shaped fixed mold venting block, wherein the moving mold venting block and the fixed mold venting block are detachably connected.

[0007] In a preferred embodiment of this utility model, the hydraulic moving mold exhaust block is provided with a preset vacuum channel.

[0008] In a preferred embodiment of this utility model, both the moving mold exhaust block and the fixed mold exhaust block of the wave plate are in the shape of a wave plate.

[0009] In a preferred embodiment of this utility model, the top of the hydraulic fixed mold exhaust block is provided with a connecting hole, and the filter element passes through the connecting hole.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a venting structure for die casting box-type parts. This venting structure combines wave plate venting with hydraulic venting, offering the advantages of both effective wave plate venting and the ease of operation and wide applicability of hydraulic venting. This allows for better quality control and improved product yield. The improved venting method for die casting box-type parts allows for more thorough removal of air from the cavity, minimizing residual waste gas in the mold cavity. This facilitates smooth product molding, reduces internal porosity defects, and improves the yield of die-cast products. Attached Figure Description

[0011] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional structural diagram of the venting method for the die-casting of lifting box-type parts according to this utility model; Figure 2 for Figure 1 A three-dimensional exploded view of the venting method for die-casting of lifting box-type parts; Figure 3 for Figure 2 Exploded view of the three-dimensional structure of the hydraulic exhaust device; Figure 4 for Figure 2Exploded view of the three-dimensional structure of the central wave plate exhaust device.

[0013] The markings in the diagram are explained as follows: 1. Hydraulic venting device; 11. Hydraulic fixed mold venting block; 111. Connecting hole; 12. Hydraulic valve; 13. Hydraulic moving mold venting block; 131. Vacuum channel; 14. Filter element; 2. Corrugated plate venting device; 21. Corrugated plate moving mold venting block; 22. Corrugated plate fixed mold venting block. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0015] like Figures 1 to 4 As shown, the die-cast venting structure of this box-type part includes a pair of hydraulic venting devices 1 and a pair of wave plate venting devices 2.

[0016] The hydraulic venting device 1 includes a hydraulic fixed mold venting block 11 and a hydraulic moving mold venting block 13. A hydraulic valve 12 is provided between the hydraulic fixed mold venting block 11 and the hydraulic moving mold venting block 13. A filter element 14 is provided above the hydraulic fixed mold venting block 11.

[0017] The wave plate venting device 2 includes a wave-shaped moving mold venting block 21 and a wave-shaped stationary mold venting block 22, which are detachably connected. The hydraulic moving mold venting block 13 has a pre-set vacuum channel 131. Both the moving mold venting block 21 and the stationary mold venting block 22 are wave-shaped.

[0018] The top of the hydraulic fixed mold venting block 11 is provided with a connection hole 111, through which the filter element 14 passes.

[0019] The following describes the working method of venting the die-casting of this type of lifting box part, including the following steps: S1. The die-casting machine closes the mold and pours the molten aluminum into the material cylinder; S2. Mold sealing: Residual air and sprayed moisture evaporate inside the cavity. After the injection stroke reaches the designated position, the hydraulic system controls the hydraulic valve 12 to open and start the hydraulic valve 12 to extract the gas inside the cavity through the preset vacuum channel 131. When the stroke reaches the designated position, the hydraulic system controls the hydraulic valve 12 to close and the die casting machine collects data. S3, The injection punch rapidly injects aluminum liquid into the mold core 5 for rapid forming; S4. Final pressurization, exhausting the residual gas at the end of the cavity through the wave plate; S5. Die casting is complete, and part 6 is formed.

[0020] This die-casting venting structure for box-type parts employs a simultaneous hydraulic and corrugated plate venting method, replacing the traditional single venting method of corrugated plate or hydraulic venting. In this method, after the die-casting machine closes the mold and begins injection, the hydraulic venting method first extracts gas by controlling the stroke, and then the corrugated plate venting is used to create a vacuum at the end of the injection. This combination of venting methods ensures that waste gas within the mold cavity is fully discharged throughout the process, reducing product porosity, increasing hardness, improving product yield, and lowering costs.

[0021] This die-casting venting structure for box-type parts combines corrugated plate venting with hydraulic venting, offering the advantages of both effective corrugated plate venting and the ease of operation and wide applicability of hydraulic venting. This allows for better quality control and improved product yield. The venting method for die-casting box-type parts in this invention more thoroughly removes air from the cavity, minimizing residual waste gas in the mold cavity. This ensures smooth product molding, reduces internal porosity defects, and improves the yield of die-cast products.

[0022] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A die-cast venting structure for a box-type part, characterized in that, The die-cast venting structure for the box-type parts includes a pair of hydraulic venting devices (1) and a pair of wave plate venting devices (2). The hydraulic venting device (1) includes a hydraulic fixed mold venting block (11) and a hydraulic moving mold venting block (13). A hydraulic valve (12) is provided between the hydraulic fixed mold venting block (11) and the hydraulic moving mold venting block (13). A filter element (14) is provided above the hydraulic fixed mold venting block (11). The wave plate exhaust device (2) includes a wave plate moving mold exhaust block (21) and a wave plate fixed mold exhaust block (22), wherein the wave plate moving mold exhaust block (21) and the wave plate fixed mold exhaust block (22) are detachably connected.

2. The die-cast venting structure for box-type parts according to claim 1, characterized in that, The hydraulic dynamic mold exhaust block (13) is provided with a preset vacuum channel (131).

3. The die-cast venting structure for box-type parts according to claim 1, characterized in that, The wave plate moving mold venting block (21) and the wave plate fixed mold venting block (22) are both in the shape of a wave plate.

4. The die-cast venting structure for box-type parts according to claim 1, characterized in that, The top of the hydraulic fixed mold exhaust block (11) is provided with a connection hole (111), and the filter element (14) passes through the connection hole (111).

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