Extrusion pin four-loop hydraulic device

Abstract

The utility model belongs to extrusion pin four loop hydraulic technology field, and disclose a kind of extrusion pin four loop hydraulic device, including hydraulic machine spare, the upper surface of hydraulic machine spare is equipped with motor pump group, the surface of hydraulic machine spare is equipped with energy accumulator, the output of motor pump group is equipped with valve group, and the valve group is connected with the hydraulic machine spare, the surface of hydraulic machine spare is equipped with cooling pump group, the valve group with the energy accumulator is connected by pipeline intercommunication, the valve group with the hydraulic machine spare is connected by pipeline intercommunication, the side surface of hydraulic machine spare is equipped with water cooler, the cooling pump group with the water cooler is connected by pipeline intercommunication, the front side of hydraulic machine spare is equipped with liquid level meter, the utility model has can realize four loop processing, avoid unstable pressure and slow response speed and other problems, greatly improve the stability of device when using, the advantages that extrusion pin acting force is uniform.

Description

Technical Field

[0001] This utility model belongs to the field of four-circuit hydraulic extrusion pin technology, specifically a four-circuit hydraulic extrusion pin device. Background Technology

[0002] In the die-casting industry, extrusion pins are key actuators for achieving precision forming of castings, and their performance directly affects the density, dimensional accuracy, and surface quality of the castings. With the increasing demands for quality in high-end manufacturing, extrusion pins must simultaneously meet the dual technical requirements of stable high-pressure output and ultra-high response speed during operation. To eliminate defects such as porosity and shrinkage in the castings, the extrusion pins need to provide continuous and stable extrusion pressure, typically requiring a system pressure of over 200 bar. Furthermore, to adapt to the rapid die-casting cycle, the extension and retraction of the extrusion pins must achieve millisecond-level response to avoid impacting overall production efficiency.

[0003] Currently, traditional hydraulic systems for extrusion pins mostly adopt single-circuit or dual-circuit designs, which have the following technical limitations: First, insufficient pressure stability. Conventional hydraulic pump sets are prone to pressure fluctuations under high-frequency operation, resulting in uneven force on the extrusion pin and consequently causing dimensional deviations in the castings. Second, limited response speed. The single-pump, single-valve control mode cannot simultaneously handle large flow output and rapid reversal, failing to meet the demands of ultra-high-speed operation. Third, poor system reliability. Insufficient oil circuit filtration accuracy easily causes wear on hydraulic components, and the lack of comprehensive online monitoring means makes it difficult to provide early warnings of potential failures. Fourth, significant energy consumption and noise issues. Traditional motor and pump set matching schemes are inefficient under partial load conditions, and operating noise often exceeds 85 decibels, affecting the production environment.

[0004] In addition, the existing hydraulic system has poor coordination between energy storage and unloading. When the system reaches the set pressure, it often needs to be stopped to unload or maintain high pressure standby, which not only wastes energy but also shortens the service life of hydraulic components. At the same time, in multi-station die casting scenarios, single-loop systems are difficult to achieve independent control of different extrusion pin actions, which limits the flexible production capacity of the equipment.

[0005] Therefore, a four-circuit hydraulic device for extruding pins is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a four-circuit hydraulic device for extruding pins, which has the advantages of enabling four-circuit processing, avoiding problems such as unstable pressure and slow response speed, greatly improving the stability of the device during use, and ensuring uniform extruding pin force.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a four-circuit hydraulic device for extruding pins, comprising a hydraulic component, a motor pump assembly mounted on the upper surface of the hydraulic component, an accumulator mounted on the surface of the hydraulic component, a valve assembly mounted at the output end of the motor pump assembly and connected to the hydraulic component, a cooling pump assembly mounted on the surface of the hydraulic component, the valve assembly connected to the accumulator via a pipeline, the valve assembly connected to the hydraulic component via a pipeline, a water cooler mounted on one side surface of the hydraulic component, and the cooling pump assembly connected to the water cooler via a pipeline.

[0008] Preferably, a level gauge is installed on the front side of the hydraulic component.

[0009] Preferably, an electrical control box is mounted on the upper surface of the hydraulic component, and the electrical control box is electrically connected to the motor pump group, the accumulator, the cooling pump group, the valve group and the water cooler.

[0010] Preferably, a drain ball valve is installed on the bottom surface of the hydraulic component.

[0011] Preferably, the motor pump set, the accumulator, the valve set, the cooling pump set, and the water cooler together form a four-loop circuit.

[0012] Preferably, the accumulator and the water cooler are respectively installed on both sides of the hydraulic component.

[0013] Preferably, both the water cooler and the valve assembly are connected to the hydraulic components via pipelines.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. In the four-circuit design of this utility model, each circuit performs its own function and cooperates with each other. The main working circuit ensures the precise operation of the extrusion pin. Even if a circuit temporarily fails, the other circuits can maintain basic operation to a certain extent, reducing production interruption time, meeting the needs of diversified production processes, thereby effectively improving overall production efficiency, reducing pressure loss in the hydraulic oil transportation process, further improving system efficiency, and ensuring the stable and efficient operation of the entire device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the electrical control box and hydraulic components of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the cooling pump set and water cooler of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the electric pump unit, accumulator, and valve group of this utility model;

[0020] Figure 5 This is a schematic diagram of the energy storage device of this utility model.

[0021] In the diagram: 1. Hydraulic components; 21. Electrical control box; 22. Motor pump set; 23. Accumulator; 24. Valve assembly; 25. Cooling pump set; 26. Water cooler; 27. Level gauge; 28. Oil drain ball valve. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 5 As shown, this utility model provides a four-circuit hydraulic device for extruding pins, including a hydraulic component 1. A motor pump group 22 is mounted on the upper surface of the hydraulic component 1. An accumulator 23 is mounted on the surface of the hydraulic component 1. A valve group 24 is mounted on the output end of the motor pump group 22 and is connected to the hydraulic component 1. A cooling pump group 25 is mounted on the surface of the hydraulic component 1. The valve group 24 is connected to the accumulator 23 through a pipeline. The valve group 24 is connected to the hydraulic component 1 through a pipeline. A water cooler 26 is mounted on one side surface of the hydraulic component 1. The cooling pump group 25 is connected to the water cooler 26 through a pipeline.

[0024] The electric pump unit 22 provides the power source for the entire hydraulic device, converting mechanical energy into hydraulic energy to ensure sufficient pressure to drive the hydraulic components 1 and guarantee the normal operation of the extrusion pin. The accumulator 23 stores hydraulic energy, acting as a buffer during system pressure fluctuations. When the output pressure of the electric pump unit 22 is too high, it absorbs excess energy; when the system pressure drops and is insufficient to meet operational needs, it releases the stored energy to maintain stable system pressure, ensuring the continuity and stability of the extrusion operation, reducing impact damage to the hydraulic components 1 caused by pressure fluctuations, and extending the equipment's service life. The valve group 24 precisely controls the flow and pressure of the hydraulic oil, rationally distributing it to the hydraulic components 1 according to different operational requirements, enabling the extrusion pin to achieve precise extrusion action and meeting diverse production process needs. The cooling pump unit 25, in conjunction with the water cooler 26, circulates and cools the hydraulic oil. The hydraulic oil will heat up due to friction and other factors during circulation within the system; excessively high oil temperatures will affect the performance of the hydraulic oil and the normal operation of the equipment. The cooling pump unit 25 delivers hot oil to the water cooler 26, which reduces the oil temperature through heat exchange, ensuring that the hydraulic oil is always within a suitable operating temperature range, improving the reliability and stability of the system, and extending the service life of the hydraulic oil and various hydraulic components.

[0025] Specifically, a level gauge 27 is installed on the front side of the hydraulic component 1, allowing operators to intuitively and conveniently observe the hydraulic oil level. Through the level gauge 27, staff can promptly determine whether the hydraulic oil level is within the normal range. If the level is too low, hydraulic oil can be added in time to prevent equipment malfunction or performance issues caused by insufficient hydraulic oil, ensuring the hydraulic system is always in good working order.

[0026] like Figures 1 to 5 As shown, an electrical control box 21 is installed on the upper surface of the hydraulic component 1. The electrical control box 21 is electrically connected to the motor pump group 22, the accumulator 23, the cooling pump group 25, the valve group 24 and the water cooler 26, realizing centralized control and automated operation of the entire hydraulic device. The operator can set the operating parameters of the equipment through the electrical control box 21.

[0027] Furthermore, a drain ball valve 28 is installed on the bottom surface of the hydraulic component 1, which plays an important role in equipment maintenance or when the hydraulic oil needs to be replaced. By opening the drain ball valve 28, the old hydraulic oil in the hydraulic component 1 can be drained quickly and conveniently, facilitating subsequent replacement with new oil and cleaning and maintenance of the equipment's interior, thereby improving the efficiency of equipment maintenance and ensuring the normal operation of the hydraulic system.

[0028] like Figures 1 to 5 As shown, the motor pump group 22, accumulator 23, valve group 24, cooling pump group 25 and water cooler 26 together form a four-loop system. This multi-loop design allows the functions of each component to cooperate with each other while remaining relatively independent, which greatly improves the stability and reliability of the system.

[0029] It is worth noting that the accumulator 23 and the water cooler 26 are respectively installed on both sides of the hydraulic component 1, which is conducive to the connection of pipelines between components and the flow of hydraulic oil, reduces the bending and length of pipelines, reduces the pressure loss of hydraulic oil during the transportation process, and improves the working efficiency of the system.

[0030] like Figures 1 to 5 As shown, the water cooler 26 and the valve group 24 are both connected to the hydraulic component 1 through pipelines, ensuring the circulation cooling and precise control of the hydraulic oil.

[0031] Among them, the structure of hydraulic component 1 is existing technology, and its working principle is a well-known technology. The appropriate model is selected according to the actual use.

[0032] Working principle and process: During startup, the operator must first check whether the hydraulic oil level is within the normal range using the level gauge 27 on the front side of hydraulic component 1, and simultaneously confirm that the electrical connections between the electrical control box 21 and the motor pump group 22, accumulator 23, cooling pump group 25, valve group 24, and water cooler 26 are normal. Once everything is ready, the operator starts the motor pump group 22 through the starting device in the electrical control box 21, drawing and pressurizing the hydraulic oil from hydraulic component 1. The pressurized hydraulic oil is then transported to valve group 24 through pipelines.

[0033] During operation, valve group 24 distributes hydraulic oil according to a preset program. A portion of the hydraulic oil flows through pipelines to hydraulic component 1 to provide power for the action of the extrusion pin, driving the extrusion pin to complete the extrusion operation. At the same time, valve group 24 delivers another portion of hydraulic oil to accumulator 23 through pipelines. Accumulator 23 stores hydraulic energy. When the system pressure decreases, it releases the stored energy to maintain system pressure stability. This is the first loop.

[0034] During the hydraulic oil circulation process, the cooling pump group 25 starts and transports part of the hydraulic oil in the hydraulic component 1 to the water cooler 26 through the pipeline. The water cooler 26 cools the hydraulic oil, and the cooled hydraulic oil flows back to the hydraulic component 1 through the pipeline to form a cooling circuit, i.e., the second circuit.

[0035] Throughout the operation, the cooling system runs continuously. The cooling pump set 25 pressurizes the cooling water into the water cooler 26 connected to the hydraulic component 1, and reduces the temperature of the hydraulic oil through heat exchange to avoid affecting the system performance due to excessive oil temperature.

[0036] In addition, the hydraulic oil supply and return between the motor pump group 22, valve group 24 and hydraulic component 1 constitutes the main working circuit, which is the third circuit; the hydraulic oil storage and release cycle between the accumulator 23 and valve group 24 forms the fourth circuit. These four circuits work together to ensure the stable operation of the device.

[0037] The level gauge 27 monitors the oil level in the hydraulic component 1 in real time to ensure that the oil volume is within the normal working range.

[0038] During shutdown, a shutdown command is issued via the electrical control box 21, causing the motor pump unit 22, cooling pump unit 25, and other components to stop operating sequentially. If hydraulic oil needs to be replaced, the drain ball valve 28 on the bottom of the hydraulic component 1 can be opened to drain the old hydraulic oil.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-circuit hydraulic device for pressing pins, comprising hydraulic components (1); characterized in that: A motor pump assembly (22) is mounted on the upper surface of the hydraulic component (1). An accumulator (23) is mounted on the surface of the hydraulic component (1). A valve assembly (24) is mounted on the output end of the motor pump assembly (22), and the valve assembly (24) is connected to the hydraulic component (1). A cooling pump assembly (25) is mounted on the surface of the hydraulic component (1). The valve assembly (24) is connected to the accumulator (23) through a pipeline. The valve assembly (24) is connected to the hydraulic component (1) through a pipeline. A water cooler (26) is mounted on one side surface of the hydraulic component (1), and the cooling pump assembly (25) is connected to the water cooler (26) through a pipeline.

2. The four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: A level gauge (27) is installed on the front side of the hydraulic component (1).

3. The four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: An electrical control box (21) is installed on the upper surface of the hydraulic component (1), and the electrical control box (21) is electrically connected to the motor pump group (22), the accumulator (23), the cooling pump group (25), the valve group (24) and the water cooler (26).

4. The four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: The bottom surface of the hydraulic component (1) is equipped with an oil drain ball valve (28).

5. A four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: The motor pump group (22), the accumulator (23), the valve group (24), the cooling pump group (25), and the water cooler (26) together form a four-loop circuit.

6. A four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: The accumulator (23) and the water cooler (26) are respectively installed on both sides of the hydraulic component (1).

7. A four-circuit hydraulic device for extruding pins according to claim 1, characterized in that: The water cooler (26) and the valve group (24) are both connected to the hydraulic component (1) via pipelines.

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