Fixed die ejection energy storage device for die casting machine

Abstract

The utility model relates to a fixed die ejection energy storage device for a die-casting machine, which comprises a hydraulic energy accumulator, a fixed die ejection energy storage device, a fixed die ejection energy storage device and a fixed die ejection energy storage device, the oil tank is connected with the hydraulic energy accumulator, the hydraulic energy accumulator is filled with hydraulic oil through the oil tank, the internal pressure of the hydraulic energy accumulator is increased, and energy is stored in the hydraulic energy accumulator; the control valve is used for controlling the pressure release of the hydraulic energy accumulator; hydraulic oil is filled into the hydraulic energy accumulator through the oil tank, so that the internal pressure of the hydraulic energy accumulator is increased, energy is stored in the hydraulic energy accumulator, kinetic energy is consumed when the die-casting machine works, at the moment, the control valve is opened, high-pressure oil stored in the hydraulic energy accumulator is rapidly released, powerful power is provided for movement of a die, products are ejected out, and the ejection efficiency of the die-casting machine is improved.

Description

Technical Field

[0001] It relates to the technical field of die-casting machines, and particularly to a fixed die ejection energy storage device for a die-casting machine. Background Art

[0002] In today's highly competitive die-casting industry, continuously pursuing the improvement of production efficiency and the optimization of product quality is the core goal of enterprise development. Installing a fixed die energy storage device has become an important means for many die-casting manufacturers to achieve this goal.

[0003] Fixed die ejection plays a crucial role in die-casting production. Traditional die-casting machines may have problems such as insufficient power and slow response speed in the fixed die ejection process, thus affecting the continuity of production and the forming quality of products.

[0004] According to Chinese Patent CN208728653U, a die-casting machine fixed die ejection structure is disclosed. The device includes a fixed die plate and a fixed die fixed on the fixed die plate. A fixed die ejection mechanism is provided on the fixed die, and the fixed die ejection mechanism is driven by multiple groups of nitrogen springs fixedly positioned on the fixed die plate. Each group of nitrogen springs is connected with a separate air intake pipe, and a separate manual control valve or electric control valve is provided on each air intake pipe to control the nitrogen spring. However, this structure has relatively small power and limited application scope, and cannot provide guarantee in large die-casting machines or when producing high-precision and high-quality die-casting products, and it is easy to have unsmooth product demoulding, resulting in a relatively high rejection rate.

[0005] Therefore, it is necessary to develop a fixed die ejection energy storage device for a die-casting machine to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a fixed die ejection energy storage device for a die-casting machine with high ejection efficiency.

[0007] To achieve the above purpose, the present utility model provides the following technical solution: A fixed die ejection energy storage device for a die-casting machine, which includes:

[0008] A hydraulic accumulator, which can store energy for the injection system of the die-casting machine;

[0009] An oil tank, which is connected to the hydraulic accumulator. The oil tank fills hydraulic oil into the hydraulic accumulator, the internal pressure of the hydraulic accumulator rises, and energy is stored in the hydraulic accumulator;

[0010] A control valve, which is used to control the pressure release of the hydraulic accumulator.

[0011] Further, the hydraulic accumulator is a nitrogen cylinder, and the hydraulic accumulator is connected with a pressure sensor and a pressure gauge.

[0012] Further, the hydraulic accumulator is also provided with a safety valve, which is used to prevent the hydraulic accumulator from overpressure.

[0013] Further, the hydraulic accumulator is also provided with a unloading valve, which is a device for controlling the pressure and flow rate in the hydraulic system.

[0014] Further, the unloading valve is composed of a relief valve and a check valve. When the system pressure reaches the opening pressure of the relief valve, the relief valve opens and the pump unloads; when the system pressure drops to the closing pressure of the relief valve, the relief valve closes.

[0015] Further, a solenoid valve is provided on one side of the hydraulic accumulator, and the solenoid valve adjusts the direction, flow rate, speed and other parameters of the medium.

[0016] Further, a cartridge valve is also provided on one side of the hydraulic accumulator. The spool of the cartridge valve is usually in a conical structure and is installed inside the valve sleeve.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model is a fixed die ejection energy storage device for a die casting machine, which has the characteristic of high ejection efficiency. The oil tank fills hydraulic oil into the hydraulic accumulator to increase the internal pressure and store energy in the hydraulic accumulator. When the die casting machine is working, kinetic energy is consumed. At this time, the control valve opens, and the high-pressure oil stored in the hydraulic accumulator is quickly released to provide strong power for the movement of the mold, eject the product, and improve the ejection efficiency of the die casting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0019] Figure 1 is a layout structure schematic diagram of a fixed die ejection energy storage device for a die casting machine of the present utility model;

[0020] Figure 2 is Figure 1 a partial structure schematic diagram of the shown fixed die ejection energy storage device for a die casting machine.

[0021] In the figure: 1, hydraulic accumulator; 2, oil tank; 3, control valve; 4, pressure sensor; 5, pressure gauge; 6, safety valve; 7, unloading valve; 8, solenoid valve; 9, cartridge valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 2 , the present invention is a fixed mold ejection energy storage device for a die casting machine, which includes a hydraulic accumulator 1, an oil tank 2 and a control valve 3.

[0024] Please refer to Figure 1 , the hydraulic accumulator 1 can provide energy storage for the injection system of the die casting machine. Specifically, the hydraulic accumulator 1 in this embodiment is a nitrogen cylinder, and its quantity and specifications are changed according to requirements. The hydraulic accumulator 1 is connected with a pressure sensor 4 and a pressure gauge 5. The pressure sensor 4 is a prior art device that can sense pressure signals and convert the pressure signals into available output electrical signals according to certain rules. The pressure sensor 4 is used to detect the pressure in the hydraulic accumulator 1 and transmit the converted available output electrical signal to the pressure gauge 5, and the pressure gauge 5 displays the pressure in the hydraulic accumulator 1.

[0025] Please refer to Figures 1 to 2 , the oil tank 2 is used to store the hydraulic oil of the die casting machine. The oil tank 2 is connected with the hydraulic accumulator 1. The oil tank 2 fills the hydraulic accumulator 1 with hydraulic oil through an oil pump (not shown) to increase the internal pressure and store energy in the hydraulic accumulator 1.

[0026] Please refer to Figure 1 , the control valve 3 is used to control the pressure release of the hydraulic accumulator 1. Specifically, during the die casting process, when the mold needs to move, the control valve 3 is opened, and the high-pressure oil stored in the hydraulic accumulator 1 is quickly released to provide powerful power for the movement of the mold. When it is not needed, the control valve 3 is in a closed state to keep the hydraulic accumulator 1 in a closed state and charge it through the oil tank 2.

[0027] Please refer to Figures 1 to 2 , the hydraulic accumulator 1 is also provided with a safety valve 6 and a unloading valve 7. Since the hydraulic accumulator 1 stores high-pressure energy internally, corresponding safety devices must be equipped to prevent overpressure and accidents. The safety valve 6 is used to ensure the safety of the hydraulic accumulator 1. The unloading valve 7 is a device for controlling the pressure and flow rate in the hydraulic system. The unloading valve 7 is composed of an overflow valve and a check valve. When the system pressure reaches the opening pressure of the overflow valve, the overflow valve opens and the pump unloads; when the system pressure drops to the closing pressure of the overflow valve, the overflow valve closes and the pump loads the system. The pressure at which the pump unloads is called the unloading pressure, and the pressure at which the pump is in the loading state.

[0028] Please refer toFigure 2 , in another embodiment, the fixed mold ejection energy storage device for a die-casting machine of the present utility model further comprises a solenoid valve 8. The solenoid valve 8 is a prior art. The solenoid valve 8 is an industrial device controlled by electromagnetism. It is a basic automation component used to control fluids and belongs to an actuator. In this embodiment, the solenoid valve 8 controls the direction, flow rate, speed and other parameters of the adjustment medium in the fixed mold ejection energy storage device for a die-casting machine of the present utility model.

[0029] Please refer to Figure 2 , in another embodiment, the fixed mold ejection energy storage device for a die-casting machine of the present utility model further comprises a cartridge valve 9. The cartridge valve 9 is a prior art. Its valve core is usually in a conical structure and is installed inside the valve sleeve for realizing various control functions. It can be pressure control, flow control, direction control or compound control.

[0030] When the fixed mold ejection energy storage device for a die-casting machine of the present utility model is in use, the energy generated by the die-casting machine is relatively sufficient. The oil tank 2 fills the hydraulic accumulator 1 with hydraulic oil through an oil pump, increasing the internal pressure thereof and storing energy therein. When the die-casting machine is working and consuming kinetic energy, problems such as insufficient power and slow response speed may occur in the fixed mold ejection link. At this time, the control valve 3 is opened, and the high-pressure oil stored in the hydraulic accumulator 1 is quickly released to provide powerful power for the movement of the mold to eject the product. In the feeding and forming links, when there is surplus power in the die-casting machine, the oil tank 2 fills the hydraulic accumulator 1 with hydraulic oil through an oil pump to replenish the energy again.

[0031] The fixed mold ejection energy storage device for a die-casting machine of the present utility model has the characteristic of high ejection efficiency. The oil tank fills the hydraulic accumulator with hydraulic oil to increase the internal pressure thereof and store energy therein. When the die-casting machine is working and consuming kinetic energy, the control valve is opened at this time, and the high-pressure oil stored in the hydraulic accumulator is quickly released to provide powerful power for the movement of the mold to eject the product, improving the ejection efficiency of the die-casting machine.

[0032] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitution or change, and should be covered by the protection scope of the present utility model.

Claims

1. A fixed die ejection energy storage device for a die casting machine, characterized in that: It includes: A hydraulic accumulator (1) can provide energy storage for the injection system of the die casting machine; An oil tank (2) is connected to the hydraulic accumulator (1), and the oil tank (2) fills the hydraulic oil into the hydraulic accumulator (1), so that the internal pressure of the hydraulic accumulator (1) increases and energy is stored in the hydraulic accumulator (1); A control valve (3) is used to control the pressure release of the hydraulic accumulator (1).

2. The fixed die ejection energy storage device for a die casting machine according to claim 1, characterized in that: The hydraulic accumulator (1) is a nitrogen bottle, and the hydraulic accumulator (1) is connected to a pressure sensor (4) and a pressure gauge (5).

3. The fixed die ejection energy storage device for a die casting machine according to claim 1, characterized in that: The hydraulic accumulator (1) is also provided with a safety valve (6), and the safety valve (6) is used to prevent the hydraulic accumulator (1) from being over-pressurized.

4. The fixed die ejection energy storage device for a die casting machine according to claim 1, characterized in that: The hydraulic accumulator (1) is also provided with a relief valve (7), and the relief valve (7) is a device for controlling the pressure and flow in the hydraulic system.

5. The fixed die ejection energy storage device for a die casting machine according to claim 4, characterized in that: The unloading valve (7) is composed of a relief valve and a check valve. When the system pressure reaches the opening pressure of the relief valve, the relief valve opens and the pump is unloaded; when the system pressure drops to the closing pressure of the relief valve, the relief valve closes.

6. The fixed die ejection energy storage device for a die casting machine according to claim 1, characterized in that: A solenoid valve (8) is provided on one side of the hydraulic accumulator (1), and the solenoid valve (8) adjusts the direction, flow rate, speed and other parameters of the medium.

7. The fixed die ejection energy storage device for a die casting machine according to claim 1, characterized in that: A cartridge valve (9) is also provided on one side of the hydraulic accumulator (1). The valve core of the cartridge valve (9) is usually a conical structure and is installed inside the valve sleeve.

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