Blockage-free automatic exhaust valve of die-casting die

Abstract

The utility model relates to the technical field of die-casting die exhaust, in particular to a non-blocking automatic exhaust valve of a die-casting die, which comprises a valve body A and a valve body B, induction units are arranged on the side faces of the valve body A and the valve body B, an exhaust hole is formed in the top of the valve body A, a valve element is arranged in the exhaust hole, one end of the valve element is connected with a push-out unit, an electrical controller is fixedly connected to the side face of the valve body A, and the electrical controller is electrically connected with the push-out unit and the induction units. The opposite side faces of the valve body A and the valve body B are provided with fluid channels which can be communicated with each other, the lower ends of the fluid channels are communicated with an exhaust channel of the die body, and the non-clogging automatic exhaust valve of the die-casting die forms a system, can independently and normally work and can also be connected with vacuum equipment and a die-casting forming machine to complete the vacuum die-casting process. The problems that a wave exhaust plate is large in projection area and low in efficiency, and a mechanical kinetic energy valve is prone to being blocked and large in maintenance difficulty are solved.

Description

Technical Field

[0001] This utility model relates to the field of venting technology for die-casting molds, specifically to a non-clogging automatic venting valve for die-casting molds. Background Technology

[0002] Die casting, short for pressure casting, is a method of obtaining a casting by filling a die-casting mold cavity with liquid or semi-liquid metal at high speed under high pressure and then rapidly solidifying it under pressure. The die-casting mold used is called a die-casting mold. The pressure commonly used in die casting ranges from several megapascals to tens of megapascals, so high pressure and high speed are important characteristics of die casting.

[0003] Currently, there are three main types of venting components for metal die casting molds: corrugated venting plates, kinetic-operated mechanical vacuum valves, and hydraulic vacuum valves. Each of these three types has its drawbacks. Corrugated venting plates have low venting efficiency due to their small venting gaps and channel cross-sectional area, but they project a large area onto the mold. Kinetic-operated mechanical vacuum valves increase the cross-sectional area of ​​the venting channel, but their complex structure makes them prone to blockages, especially at the start of hot mold production. Since pressurization is not applied during die casting, blockages often occur, requiring a reduction in filling volume. Partially filling the hot mold reduces its efficiency and temperature uniformity. Hydraulic vacuum valves have a large venting cross-sectional area, but their complex structure relies on vacuum equipment and the molding machine's control. They cannot independently perform venting functions, and the system is large. When connected to molding machines without hydraulic systems, a separate hydraulic station is required.

[0004] Therefore, it is necessary to provide a non-clogging automatic venting valve for die-casting molds to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a non-clogging automatic exhaust valve for die-casting molds. It mainly solves the problems of large projected area and low efficiency of wave exhaust plate molds, complex structure and high failure rate of mechanical kinetic valves, and large size and complex control of hydraulic vacuum valve systems. It achieves the goals of miniaturization, simplification of structure, complete functionality and system simplification.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The die-casting mold non-clogging automatic exhaust valve includes valve body A and valve body B;

[0008] The valve body A and valve body B are provided with sensing units on their sides, the valve body A is provided with an exhaust port on its top, and the valve body A is provided with an air supply channel inside. The exhaust port is connected to the air supply channel, and a valve core is movably installed inside the air supply channel. One end of the valve core is connected to the ejection unit. An electrical controller is fixedly connected to the side of the valve body A. The electrical controller is electrically connected to the ejection unit and the sensing unit.

[0009] The valve body A and valve body B have fluid channels that can communicate with each other on their opposite sides. The lower end of the fluid channel is connected to the exhaust channel of the mold body, and the upper end of the fluid channel is connected to the exhaust port.

[0010] Preferably, the sensing unit includes a mold status detection body fixedly disposed on the side of valve body B and a mold status detection sensor fixedly disposed on the side of valve body A.

[0011] Preferably, the ejection unit includes a cylinder seat fixedly mounted on the valve body A, a cylinder fixedly connected to the cylinder seat, and the cylinder being electrically connected to the electrical controller.

[0012] Preferably, the ejection unit further includes a spring seat and a spring sleeved on the outside of the push rod at the tail end of the valve core, with one end of the spring fixedly connected to a spring cover, the spring cover being movably connected to the cylinder extension end, and the other end of the spring being fixedly connected to the spring seat, the spring cover abutting against the cylinder extension end.

[0013] Preferably, at least one material head detection unit is further provided inside the valve body A. The material head detection unit is disposed on the fluid channel and includes a detection electrode, which is electrically connected to the electrical controller.

[0014] Preferably, the outer surface of the detection electrode is provided with a ceramic insulating kit.

[0015] Preferably, the detection electrode and the mold status sensor are both electrically connected to the electrical controller via detection electrode lines.

[0016] Preferably, the top surface of the valve body A is provided with a cooling channel drain outlet, and the interior of the valve body A is provided with cooling channel branches.

[0017] This utility model provides a non-clogging automatic exhaust valve for die-casting molds, which has the following beneficial effects:

[0018] 1. In this utility model, the non-clogging automatic exhaust valve for die-casting molds forms a self-contained system. It can complete the die-casting exhaust process independently or be connected to vacuum equipment and die-casting molding machines to complete the vacuum die-casting process. This solves the problems of large projected area and low efficiency of wave exhaust plates, as well as the problems of easy clogging and difficult maintenance of mechanical kinetic valves.

[0019] 2. This utility model has a simple and compact structure, which solves the problems of high investment cost and difficult maintenance caused by the large size and complex system of hydraulic vacuum valves. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the internal structure of the non-clogging automatic exhaust valve for die-casting molds in this utility model;

[0021] Figure 2 This is a top view of the non-clogging automatic exhaust valve for die-casting molds in this utility model.

[0022] Figure 3 This is a schematic diagram of the fluid channel of the non-clogging automatic exhaust valve for the die-casting mold in this utility model.

[0023] In the diagram: 1. Valve body A, 2. Valve body B, 3. 1# material head detection electrode, 4. Ceramic insulation kit, 5. 2# material head detection electrode, 6. Valve core, 7. Spring base, 8. Spring, 9. Spring cover, 10. Cylinder seat, 11. Cylinder, 12. Detection electrode wire, 13. Electrode chamber cover, 14. Mold status detection body, 15. Mold status detection sensor, 16. Exhaust port, 17. Electrical controller, 18. Cooling channel inlet and outlet, 19. Cooling channel branch. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1-3 In this invention, a technical solution is provided:

[0028] An automatic vent valve for non-clogging die casting molds includes valve body A1 and valve body B2. Sensing units are provided on the sides of valve body A1 and valve body B2. A vent 16 is provided on the top of valve body A1. An air supply channel is provided inside valve body A1. The vent 16 is connected to the air supply channel. A valve core 6 is movably installed inside the air supply channel. One end of the valve core 6 is connected to the ejection unit. An electrical controller 17 is fixedly connected to the side of valve body A1. The electrical controller 17 is electrically connected to the ejection unit and the sensing unit.

[0029] The valve bodies A1 and B2 have fluid channels that can communicate with each other on their opposite sides. When valve bodies A1 and B2 are closed, a complete flow channel is formed. The lower end of the fluid channel is connected to the exhaust channel of the mold body, and the upper end of the fluid channel is connected to the exhaust port 16. When the valve body A1 side and the valve body B2 side are closed together, it indicates that the mold is in the mold-closed state. After the sensing unit contacts, it sends an electrical signal to the electrical controller 17. The electrical controller 17 controls the ejection unit to eject the valve core 6. The valve channel is connected to the exhaust port 16. When the die-casting molten metal enters the mold body, the air inside the mold body enters the automatic exhaust valve through the fluid channel and is discharged through the exhaust port 16. When the molten metal head enters the head detection electrode 3 inside the valve, the electrical controller 17 controls the cylinder extension rod to retract. The valve core 6 is driven by the spring to quickly retract, the valve channel is closed, and the molten metal is blocked from continuing to advance.

[0030] Furthermore, such as Figure 2 As shown: The sensing unit includes a mold status detection body 14 fixedly installed on the side of valve body B2 and a mold status detection sensor 15 fixedly installed on the side of valve body A1. When valve body A1 and valve body B2 are closed, the mold status detection sensor 15 contacts the mold status detection body 14 and sends a control signal.

[0031] Furthermore, such as Figure 1 As shown: The ejection unit includes a cylinder seat 10 fixedly mounted on the valve body A1, and a cylinder 11 is fixedly connected to the cylinder seat 10. The cylinder 11 is electrically connected to the electrical controller 17. When the electrical controller 17 receives a signal from the mold status detection sensor 15, it controls the cylinder 11 to eject the valve core 6 and open the exhaust port 6 to achieve exhaust.

[0032] Furthermore, as Figure 1 As shown: The ejection unit further includes a spring seat 7 and a spring 8 sleeved on the outside of the valve core. The spring seat 7 abuts against the valve body A1. One end of the spring 8 is fixedly connected to the spring seat 7, and the other end of the spring 8 is fixedly connected to the spring cover 9. The spring cover 9 is fixedly connected to the valve core 6 and movably connected to the extension end of the cylinder 11. When the extension end of the cylinder 11 retracts, the strong rebound of the spring 8 can drive the valve core 6 to retract quickly, improving the closing efficiency of the exhaust port 16.

[0033] Furthermore, such as Figure 1 As shown: The valve body A1 is also provided with at least one material head detection unit. The material head detection unit is set on the fluid channel. The material head detection unit includes a detection electrode 3 and a ceramic insulating kit. The detection electrode 3 is electrically connected to the electrical controller 17. When the die-casting metal liquid overflows from the mold body, it will enter the fluid channel and contact the detection electrode 3. At this time, the detection electrode 3 sends a control signal to the electrical controller 17. The electrical controller 17 starts the cylinder 11 to retract, thereby retracting the valve core 6 to close the exhaust port 16.

[0034] Furthermore, the detection electrode 3 and the mold status sensor 15 are both electrically connected to the electrical controller 12 through the detection electrode line 12.

[0035] Furthermore, the valve body A1 has a cooling channel drain outlet 18 on its surface and a cooling channel branch 19 inside the valve body A1 for rapid cooling of the valve body A1 and to improve its efficiency.

[0036] Working principle: When valve body A1 and valve body B2 are closed together, the mold is in the closed state. At this time, the mold status sensor 15 sends a signal to the electrical controller 17, controlling the valve core 6 to extend, opening the valve channel, and allowing the mold to release air. When the die-casting molten metal reaches the #1 detection electrode 3 in the valve body through the mold cavity, the #1 detection electrode 3 sends a signal to the electrical controller 17, controlling the valve core 6 to retract, closing the valve channel, and ending the mold air release. This entire process is completed automatically.

[0037] When linked with vacuum equipment and molding machine: When valve body A1 and valve body B2 are closed together, the mold is in the closed state. At this time, mold status sensor 15 sends a signal to electrical controller 17, controlling valve core 6 to extend, opening the valve channel, allowing mold venting or cavity vacuuming. When the die-casting molten metal reaches detection electrode 3 #1 in the valve body through the mold cavity, detection electrode 3 #1 sends a signal to electrical controller 17, controlling valve core 6 to retract, closing the valve channel, and ending mold venting or vacuuming. When valve body A1 and valve body B2 are separated, the mold is in the open state. During the vacuum cleaning process, the vacuum equipment sends a signal to electrical controller 17, opening the valve channel to allow cleaning of the vacuum channel.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-clogging automatic exhaust valve for die-casting molds, characterized in that, Including valve body A (1) and valve body B (2); The valve body A (1) and valve body B (2) are provided with sensing units on their sides. The valve body A (1) is provided with an exhaust port (16) on its top. The valve body A (1) is provided with an air supply channel inside. The exhaust port (16) is connected to the air supply channel. A valve core (6) is movably provided inside the air supply channel. One end of the valve core (6) is connected to the push-out unit. An electrical controller (17) is fixedly connected to the side of the valve body A (1). The electrical controller (17) is electrically connected to the push-out unit and the sensing unit. The valve body A (1) and valve body B (2) have fluid channels that can communicate with each other on their opposite sides. The lower end of the fluid channel is connected to the exhaust channel of the mold body, and the upper end of the fluid channel is connected to the exhaust port (16).

2. The non-clogging automatic exhaust valve for die-casting molds as described in claim 1, characterized in that: The sensing unit includes a mold status detection body (14) fixedly installed on the side of valve body B (2) and a mold status detection sensor (15) fixedly installed on the side of valve body A (1).

3. The non-clogging automatic exhaust valve for die-casting molds as described in claim 2, characterized in that: The mold status detection body (14) is set flush with the parting surface.

4. The non-clogging automatic exhaust valve for die-casting molds as described in claim 1, characterized in that: The ejection unit includes a cylinder seat (10) fixedly mounted on the valve body A (1), and a cylinder (11) is fixedly connected to the cylinder seat (10). The cylinder (11) is electrically connected to the electrical controller (17).

5. The non-clogging automatic exhaust valve for die-casting molds as described in claim 1, characterized in that: The ejection unit also includes a spring seat (7) and a spring (8) sleeved on the outside of the push rod at the tail end of the valve core. One end of the spring (8) is fixedly connected to the spring cover (9), the spring cover (9) is movably connected to the telescopic end of the cylinder (11), and the other end of the spring (8) is fixedly connected to the spring seat (7). The spring cover (9) abuts against the telescopic end of the cylinder (11).

6. The non-clogging automatic exhaust valve for die casting molds as described in claim 1, characterized in that: The valve body A (1) is also provided with at least one metal fluid detection unit. The metal fluid detection unit is located on the fluid channel and includes a detection electrode (3). The detection electrode (3) is electrically connected to the electrical controller (17).

7. The non-clogging automatic exhaust valve for die casting molds as described in claim 6, characterized in that: The outer surface of the detection electrode (3) is provided with a ceramic insulating kit (4).

8. The non-clogging automatic exhaust valve for die casting molds as described in claim 6, characterized in that: The detection electrode (3) is electrically connected to the electrical controller (17) via the detection electrode line (12).

9. The non-clogging automatic exhaust valve for die-casting molds as described in claim 1, characterized in that: The valve body A (1) has a cooling channel inlet / outlet (18) on its top surface, and a cooling channel branch (19) is provided inside the valve body A (1).

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