Vacuum valve for die casting

Abstract

The utility model relates to the technical field of die-casting manufacturing, in particular to a vacuum valve for die-casting, which comprises a valve body and a piston, a cavity is arranged in the valve body, the piston is movably mounted in the cavity, a first connector and a second connector are respectively arranged on two sides of the middle of the valve body, and both the first connector and the second connector extend into the valve body. A double-end air cylinder is embedded in the middle of the piston, telescopic assemblies are arranged on the two sides of the double-end air cylinder and installed on the two sides of the middle of the piston in a penetrating and inserting mode, each telescopic assembly comprises a sleeve and a telescopic pipe, and a telescopic rod transversely stretches out and draws back in the sleeve and can be connected with the first connecting opening and the second connecting opening in a clamped mode; a complete and smooth airflow channel with high sealing performance can be formed, air leakage can be effectively prevented, the opening and closing mode of the vacuum valve is simple, operation is easy, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of die casting manufacturing technology, specifically to a vacuum valve for die casting. Background Technology

[0002] Vacuum die casting technology has been widely applied in new energy vehicles, 5G communications, improvement of traditional automotive castings, electronics, household products, aerospace and other fields. Vacuum die casting technology involves removing air from the mold cavity before the molten metal is cooled and formed, reducing the injection pressure, reducing porosity, increasing the density of the product, and enhancing its mechanical properties. The vacuum valve is a very important component in the vacuum die casting process.

[0003] However, the existing technology has the following drawbacks:

[0004] Existing vacuum valves for die casting often suffer from drawbacks such as aluminum dust clogging the vacuum channel and poor sealing leading to air leakage. These valves also have weak sealing properties, making them prone to leakage. Furthermore, existing vacuum valves often use electrical control switches for closure, which result in a high failure rate. When these valves are damaged or clogged, a significant amount of time is required for repair, replacement, or cleaning, thereby reducing production efficiency and increasing production costs. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum valve for die casting to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum valve for die casting, comprising a valve body and a piston. A mounting hole is provided in the middle of the top of the valve body, and a cavity is provided inside the valve body. The top of the cavity coincides with the mounting hole. A piston is movably installed inside the cavity. A first connection port and a second connection port are respectively provided on both sides of the middle part of the valve body. The ends of the first connection port and the second connection port away from the valve body are both designed to bulge outward. Sealing gaskets are adhered to the inner walls of the first connection port and the second connection port.

[0007] Using the above technical solution, the piston moves up and down and rotates inside the cavity, which can open and close the vacuum valve. The first and second connection ports facilitate the connection and installation of the vacuum valve with the pipeline. The inner wall is equipped with a sealing gasket, which increases the sealing performance of the connection between the vacuum valve and the pipeline.

[0008] A mounting plate is fixedly installed on the top of the piston. The mounting plate has a rectangular cross-section. A first button and a second button are symmetrically arranged on both sides of the top of the mounting plate. A micro motor is fixedly installed in the middle of the bottom of the mounting plate.

[0009] The above technical solution features a wider mounting plate on both sides, making it easier to grip the piston that rotates under force, and a micro motor provides power to the entire vacuum valve.

[0010] A double-headed cylinder is embedded in the middle of the piston. Telescopic components are fixedly installed on both sides of the double-headed cylinder. Circular holes are opened on both sides of the middle part of the piston, and the telescopic components are inserted into the inside of the circular holes.

[0011] Using the above technical solution, the dual-head cylinder can drive the telescopic components on both sides to extend and retract laterally. When the telescopic components retract, they are retracted into the piston, which facilitates the piston to slide up and down inside the cavity. When the telescopic components extend, the end away from the piston is engaged with one end of the first connection port or one end of the second connection port, forming a channel to facilitate airflow.

[0012] The telescopic assembly includes a sleeve and a telescopic tube. The sleeve is fitted onto the outside of the telescopic tube, and one end of the telescopic tube is slidably installed inside the sleeve. The outer side of the sleeve near the telescopic tube is fixedly connected to the inner wall of the circular hole, and a sealing gasket is adhered to the outer side of the telescopic tube away from the sleeve.

[0013] In the above technical solution, the sleeve is fixedly installed inside the piston, the telescopic rod is inserted laterally inside the sleeve, and a sealing gasket is provided at one end of the telescopic tube that connects to the first connection port and the second connection port, which enhances the sealing performance of the airflow channel inside the vacuum valve.

[0014] The dual-headed cylinder is electrically connected to the first button and the second button, both of which are electrically connected to the micro motor. The outer wall of the piston is bonded with a rubber pad, and the sharp corners of the mounting plate are all rounded and chamfered.

[0015] Using the above technical solution, the first button controls the extension of the telescopic component, and the second button controls the retraction of the telescopic component. The outer corners of the mounting plate are chamfered to facilitate gripping and prevent injury to the palm.

[0016] Vertical grooves are provided on the inner walls of the middle part of both sides of the cavity. The vertical grooves are located above the first connection port. An arc-shaped groove is provided on one side of the top of the vertical groove. The end of the arc-shaped groove near the vertical groove is connected to the top of the vertical groove.

[0017] The above technical solution connects the vertical slide groove and the arc-shaped slide groove to form a smooth slide groove, which facilitates sliding within the slide groove. The vertical slide groove facilitates the piston's up and down movement, while the arc-shaped slide groove facilitates the piston's rotation within the cavity.

[0018] Slider blocks are fixedly installed on both sides of the middle part of the piston. The sliders are located above the double-headed cylinder and are slidably installed inside the vertical slide groove and the arc-shaped slide groove.

[0019] By adopting the above technical solution, the slider not only facilitates the movement of the piston inside the cavity, but also serves as a limit to prevent the piston from falling off.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model vacuum valve has a simple opening and closing mechanism, a simple structure, is easy to operate, can be completed quickly, improves production efficiency, and has sealing gaskets at each connection part of the airflow channel, which enhances the overall sealing performance of the vacuum valve and can effectively prevent air leakage. Attached Figure Description

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

[0023] Figure 2 This is a front sectional view of the present invention.

[0024] Figure 3 This is a schematic cross-sectional view of the piston lifting structure of this utility model.

[0025] Figure 4 This is a schematic diagram of the overall piston mechanism of this utility model;

[0026] Figure 5 This is a schematic diagram of the vertical and arc-shaped sliding grooves of this utility model.

[0027] In the diagram: 1. Valve body; 2. Mounting hole; 3. Piston; 4. Mounting plate; 5. First button; 6. Second button; 7. First connection port; 8. Vertical slide groove; 9. Arc slide groove; 10. Micro motor; 11. Slider; 12. Double-headed cylinder; 13. Telescopic assembly; 14. Telescopic tube; 15. Round hole; 16. Second connection port; 17. Sleeve; 18. Cavity. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5This utility model provides a vacuum valve for die casting, including a valve body 1 and a piston 3. A mounting hole 2 is provided in the middle of the top of the valve body 1. A cavity 18 is provided inside the valve body 1. The top of the cavity 18 coincides with the mounting hole 2. The piston 3 is movably installed inside the cavity 18. A first connection port 7 and a second connection port 16 are respectively provided on both sides of the middle part of the valve body 1. The end of the first connection port 7 away from the valve body 1 and the end of the second connection port 16 away from the valve body 1 are both designed to protrude outward. Sealing gaskets are adhered to the inner walls of the first connection port 7 and the inner walls of the second connection port 16. The piston 3 is movably connected inside the valve body 1. The ends of the first connection port 7 and the second connection port 16 away from the valve body 1 are connected to a pipeline.

[0030] A mounting plate 4 is fixedly installed on the top of the piston 3. The mounting plate 4 has a rectangular cross-section. A first button 5 and a second button 6 are symmetrically arranged on both sides of the top of the mounting plate 4. A micro motor 10 is fixedly installed in the middle of the bottom of the mounting plate 4. A mounting groove is opened in the middle of the top of the piston 3, and the micro motor 10 is engaged and installed inside the mounting groove.

[0031] A double-headed cylinder 12 is embedded in the middle of the piston 3. Telescopic components 13 are fixedly installed on both sides of the double-headed cylinder 12. Circular holes 15 are opened on both sides of the middle of the piston 3. The telescopic components 13 are inserted into the circular holes 15. The double-headed cylinder 12 drives the telescopic components 13 to extend and retract laterally.

[0032] The telescopic assembly 13 includes a sleeve 17 and a telescopic tube 14. The sleeve 17 is sleeved on the outside of the telescopic tube 14. One end of the telescopic tube 14 is slidably installed inside the sleeve 17. The outer side of the sleeve 17 near the telescopic tube 14 is fixedly connected to the inner wall of the round hole 15. A sealing gasket is bonded to the outer side of the telescopic tube 14 away from the sleeve 17. The sleeve 17 is embedded on both sides of the middle part of the piston 3. The telescopic tube 14 extends and retracts laterally inside the sleeve 17.

[0033] The double-headed cylinder 12 is electrically connected to the first button 5 and the second button 6. Both the first button 5 and the second button 6 are electrically connected to the micro motor 10. The outer wall of the piston 3 is bonded with a rubber pad. The sharp corners of the mounting plate 4 are all rounded and chamfered. The first button 5 and the second button 6 control the opening and closing of the double-headed cylinder 12.

[0034] Vertical grooves 8 are provided on the inner walls of the middle part of both sides of the cavity 18. The vertical grooves 8 are located above the first connection port 7. An arc-shaped groove 9 is provided on one side of the top of the vertical groove 8. The end of the arc-shaped groove 9 near the vertical groove 8 is connected to the top of the vertical groove 8. The vertical groove 8 and the arc-shaped groove 9 are connected to form a complete slide.

[0035] Slider 11 is fixedly installed on both sides of the middle part of piston 3. Slider 11 is located above double-headed cylinder 12. Slider 11 is slidably installed inside vertical slide groove 8 and arc-shaped slide groove 9. Slider 11 slides inside vertical slide groove 8 and arc-shaped slide groove 9, which serves as a limit.

[0036] Working principle: When using this utility model, firstly, the end of the first connection port 7 away from the valve body 1 and the end of the second connection port 16 away from the valve body 1 are fixedly connected to the two ends of the pipe respectively. The sealing gaskets inside the first connection port 7 and the second connection port 16 enhance the sealing performance and prevent air leakage. Then, hold the mounting plate 4 and rotate it to drive the slider 11 from one end of the arc-shaped slide groove 9 to the top of the vertical slide groove 8. Then, press down the piston 3 so that the bottom of the piston 3 fits against the bottom inner wall of the cavity 18. Press the first button 5 to trigger the extension of the telescopic tube 14. The two telescopic rods 14 are respectively inserted into the end of the first connection port 7 near the piston 3 and the end of the second connection port 16 near the piston 3, forming a complete and connected airflow channel. The airflow channel has strong sealing performance, the vacuum valve opening and closing method is simple, the structure is simple, it is easy to operate, and it can improve production efficiency.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vacuum valve for die casting, comprising a valve body (1) and a piston (3), characterized in that: The valve body (1) has a mounting hole (2) in the middle of its top. The valve body (1) has a cavity (18) inside. The top of the cavity (18) coincides with the mounting hole (2). A piston (3) is movably installed inside the cavity (18). The valve body (1) has a first connection port (7) and a second connection port (16) on both sides of its middle section. The end of the first connection port (7) away from the valve body (1) and the end of the second connection port (16) away from the valve body (1) are both designed to protrude outward. The inner walls of the first connection port (7) and the inner walls of the second connection port (16) are both bonded with sealing gaskets.

2. The vacuum valve for die casting according to claim 1, characterized in that: The piston (3) is fixedly mounted on the top of the mounting plate (4), which has a rectangular cross-section. The top of the mounting plate (4) is symmetrically provided with a first button (5) and a second button (6). A micro motor (10) is fixedly mounted in the middle of the bottom of the mounting plate (4).

3. The vacuum valve for die casting according to claim 2, characterized in that: A double-headed cylinder (12) is embedded in the middle of the piston (3). Telescopic components (13) are fixedly installed on both sides of the double-headed cylinder (12). Circular holes (15) are opened on both sides of the middle part of the piston (3). The telescopic components (13) are inserted into the inside of the circular holes (15).

4. The vacuum valve for die casting according to claim 3, characterized in that: The telescopic assembly (13) includes a sleeve (17) and a telescopic tube (14). The sleeve (17) is fitted on the outside of the telescopic tube (14). One end of the telescopic tube (14) is slidably installed inside the sleeve (17). The outer side of the sleeve (17) near the telescopic tube (14) is fixedly connected to the inner wall of the round hole (15). A sealing gasket is adhered to the outer side of the telescopic tube (14) away from the sleeve (17).

5. The vacuum valve for die casting according to claim 4, characterized in that: The double-headed cylinder (12) is electrically connected to the first button (5) and the second button (6). Both the first button (5) and the second button (6) are electrically connected to the micro motor (10). The outer wall of the piston (3) is bonded with a rubber pad. The sharp corners of the mounting plate (4) are all rounded and chamfered.

6. The vacuum valve for die casting according to claim 1, characterized in that: Vertical grooves (8) are provided on the inner walls of the middle part of both sides of the cavity (18). The vertical grooves (8) are located above the first connection port (7). An arc-shaped groove (9) is provided on one side of the top of the vertical groove (8). The end of the arc-shaped groove (9) near the vertical groove (8) is connected to the top of the vertical groove (8).

7. The vacuum valve for die casting according to claim 6, characterized in that: Both sides of the piston (3) are fixedly installed with sliders (11). The sliders (11) are located above the double-headed cylinder (12). The sliders (11) are slidably installed inside the vertical slide groove (8) and the arc-shaped slide groove (9).

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