CN218598493U - Injection system of die casting machine - Google Patents
Injection system of die casting machine Download PDFInfo
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- CN218598493U CN218598493U CN202222676584.7U CN202222676584U CN218598493U CN 218598493 U CN218598493 U CN 218598493U CN 202222676584 U CN202222676584 U CN 202222676584U CN 218598493 U CN218598493 U CN 218598493U
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Abstract
The utility model provides a system is penetrated to die casting machine pressure belongs to the relevant field of die casting machine. The energy accumulator, a lower cavity of a cartridge valve A4 and an upper cavity of the injection oil cylinder are connected through a pipeline to form an injection loop; the energy accumulator, the electromagnetic directional valve A6 and the upper cavity of the cartridge valve A4 are connected through a pipeline to form a first oil pressure loop; the backpressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and a lower cavity of the injection cylinder are connected through a pipeline to form a second oil pressure loop; the upper cavity of the injection oil cylinder is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank; the lower cavity of the injection oil cylinder is connected with the cartridge valve A2 through a pipeline and is connected with a first hydraulic oil tank. The injection system of the die-casting machine realizes the control of the speed and the pressure of the die-cast piston, so that the speed and the pressure of the piston are matched, the accuracy of the pressure and the flow of oil supply is ensured, and the phenomena of sudden stop, sudden start and the like during die-casting can be avoided.
Description
Technical Field
The utility model relates to a die casting machine hydraulic control technical field especially relates to a die casting machine is pressed and is penetrated system.
Background
The die casting machine is used for a series of industrial casting machines which are used for injecting molten metal into a die under the action of pressure for cooling and forming and obtaining a solid metal casting after die opening. With the progress of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, household appliances and the like, the die casting machine plays an increasingly greater role in industrial production.
Most prior art hot-chamber die casting machines employ accumulators to provide both shot velocity and pressure, which can result in a speed and pressure mismatch. For example, the impact speed is high, but the pressure is insufficient, so that the speed value of the die-casting process cannot be met, and the requirement of the pressure value can be met, namely, the stamping speed is too high, and the stamping is carried out instantly, so that the stamping is not smooth. An oil supply control system of a die casting machine, such as chinese utility model patent application No. CN201420684508.3, is to solve the problem that the instantaneous impact load of injection is too high. Therefore, how to realize the regulation and control of the injection pressure and solve the problem that the injection pressure can not reach the pressure value required by the injection process are the relevant problems of the die casting machine which need to be solved at the present stage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a die casting machine is pressed and is penetrated system realizes pressing the pressure regulation and control, solves the pressure value problem that the pressure of pressing pressure can not reach the pressure and penetrate the technology requirement and is the relevant problem of the die casting machine that needs to solve at present stage.
An injection system of a die casting machine comprises an energy accumulator and an injection oil cylinder, wherein an injection oil cylinder piston rod is slidably arranged in the injection oil cylinder, the injection system further comprises an electromagnetic directional valve A1, an electromagnetic directional valve A6, an electromagnetic directional valve A8, a cartridge valve A2, a cartridge valve A4 and a back pressure valve A7, and the energy accumulator, a lower cavity of the cartridge valve A4 and an upper cavity of the injection oil cylinder are connected through a pipeline to form an injection loop; the energy accumulator, the electromagnetic directional valve A6 and an upper cavity of the cartridge valve A4 are connected through pipelines to form a first oil pressure loop; the back pressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and a lower cavity of the injection oil cylinder are connected through a pipeline to form a second oil pressure loop; the upper cavity of the injection oil cylinder is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank; the lower cavity of the injection oil cylinder is connected with the cartridge valve A2 through a pipeline and is connected with the first hydraulic oil tank.
Preferably, the injection device further comprises a check valve A3, two ends of the check valve A3 are respectively communicated with the electromagnetic directional valve A1 and the lower cavity of the injection cylinder through a pipeline, and one end of the electromagnetic directional valve A1, which is far away from the check valve A3, is provided with a check valve a10.
Preferably, the check valve a10 and the check valve A3 flow in the same direction.
Preferably, a check valve A9 is connected in a pipeline of an end of the check valve a10 away from the electromagnetic directional valve A1, and a flow direction of the check valve A9 is opposite to a flow direction of the check valve A3.
Preferably, one end of the back pressure valve A7, which is far away from the electromagnetic directional valve A8, is connected with a second hydraulic oil tank through a pipeline.
Preferably, the electromagnetic directional valve A6 is connected with a third hydraulic oil tank.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a die casting machine injection system, including an accumulator and an injection hydro-cylinder, be provided with an injection hydro-cylinder piston rod in the injection hydro-cylinder slidable, the accumulator, the lower cavity of cartridge valve A4 and the upper chamber of injection hydro-cylinder pass through the pipe connection and form an injection return circuit; the energy accumulator, the electromagnetic directional valve A6 and an upper cavity of the cartridge valve A4 are connected through a pipeline to form a first oil pressure loop; the back pressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and a lower cavity of the injection oil cylinder are connected through a pipeline to form a second oil pressure loop; the upper cavity of the injection oil cylinder is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank; the lower cavity of the injection oil cylinder is connected with the cartridge valve A2 through a pipeline and is connected with the first hydraulic oil tank. When the injection molding machine works, the electromagnetic directional valve A6 is electrified, the energy accumulator produces oil to push the lower cavity of the cartridge valve A4, so that the oil in the upper cavity of the cartridge valve A4 is extruded to the electromagnetic directional valve A6, the cartridge valve A4 is opened at the moment to control the size of the cartridge valve A4, then the energy accumulator produces oil to reach the upper cavity of the injection oil cylinder through the cartridge valve A4, and the piston rod of the injection oil cylinder is extruded, so that injection flow is provided; meanwhile, the back pressure valve A7 provides pressure for a pipeline, so that the upper cavity of the cartridge valve A2 has the pressure provided by the back pressure valve A7, and by adjusting the pressure P2 provided by the back pressure valve A7, when the pressure P1 of the oil discharged from the energy accumulator to the upper cavity of the injection oil cylinder is greater than P2, the cartridge valve A2 is opened, the oil in the lower cavity of the injection oil cylinder is extruded to the first hydraulic oil tank, and the piston moves downwards at the moment, so that the purpose of controlling the acting force acting on the piston is achieved. Therefore, the injection system of the die-casting machine realizes the control of the speed and the pressure of the die-casting piston, so that the speed and the pressure of the piston are matched, the accuracy of the pressure and the flow of oil supply is ensured, and the phenomena of sudden stop, sudden start and the like during die-casting can not occur.
Drawings
Fig. 1 is the structure diagram of the injection system of the die casting machine of the utility model.
Wherein:
the hydraulic system comprises A1-energy accumulator, A2-injection oil cylinder, A3-injection oil cylinder piston rod, A4-electromagnetic directional valve A1, a 5-electromagnetic directional valve A6, A6-electromagnetic directional valve A8, A7-cartridge valve A2, an 8-cartridge valve A4, A9-back pressure valve A7, a 10-check valve A3, an 11-check valve A10, a 12-check valve A9, a 13-first hydraulic oil tank, a 14-second hydraulic oil tank and a 15-third hydraulic oil tank.
Detailed Description
The embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment provides an injection system of a die casting machine, which includes an energy accumulator 1 and an injection cylinder 2, wherein a piston rod 3 of the injection cylinder is slidably disposed in the injection cylinder 2, and the injection system further includes an electromagnetic directional valve A1 4, an electromagnetic directional valve A6, an electromagnetic directional valve A8, a cartridge valve A2, a cartridge valve A4, and a back pressure valve A7.
Specifically, the energy accumulator 1, the lower cavity of the cartridge valve A4 and the upper cavity of the injection oil cylinder 2 are connected through a pipeline to form an injection loop; the energy accumulator 1, the electromagnetic directional valve A6 and the upper cavity of the cartridge valve A4 are connected through a pipeline to form a first oil pressure loop; it should be noted that the cartridge valve has an upper chamber and a lower chamber, and when the oil pressure of the lower chamber is greater than that of the upper chamber, the cartridge valve is opened, otherwise, the cartridge valve is closed. In this embodiment, when the electromagnetic directional valve A6 is not powered, the oil pressure of the lower cavity of the cartridge valve A4 is much smaller than the oil pressure of the upper cavity of the cartridge valve A4, and at this time, the cartridge valve A4 is closed; when the electromagnetic directional valve A6 is powered on, the oil pressure of the lower cavity of the cartridge valve A4 is greater than the oil pressure of the upper cavity of the cartridge valve A4, the lower cavity of the cartridge valve A4 is communicated with the oil outlet of the energy accumulator 1, the oil of the lower cavity of the cartridge valve A4 provides pressure, the upper cavity of the cartridge valve A4 is squeezed, the oil of the upper cavity reaches the electromagnetic directional valve A6 and then enters the third hydraulic oil tank 15, the cartridge valve A4 is opened, and the oil of the energy accumulator 1 enters the upper cavity of the injection oil cylinder 2 through the opened cartridge valve A4, so that the piston rod 3 of the injection oil cylinder is pushed to move downwards to perform injection.
Specifically, the back pressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and the lower cavity of the injection cylinder 2 are connected through a pipeline to form a second oil pressure loop; the lower cavity of the injection cylinder 2 is connected with the cartridge valve A2 7 through a pipeline and is connected with the first hydraulic oil tank 13. It should be noted that, a back pressure valve A7 provides a certain pressure to the cartridge valve A2 through the electromagnetic directional valve A8, an upper chamber of the cartridge valve A2 receives the pressure, when the pressure of the oil from the lower chamber of the injection cylinder 2 to the lower chamber of the cartridge valve A2 is greater than the pressure of the oil from the lower chamber of the injection cylinder 2 to the upper chamber of the cartridge valve A7, the cartridge valve A2 is opened, the oil from the lower chamber of the injection cylinder 2 reaches the first hydraulic oil tank 13 through the cartridge valve A2 7, and at this time, the injection cylinder piston rod 3 moves downward; when the pressure of the back pressure valve A7 to the upper cavity is greater than the oil outlet pressure of the lower cavity of the injection cylinder 2, the cartridge valve A2 is closed, and the piston rod 3 of the injection cylinder cannot go down. By way of example, when the set pressure of the back pressure valve is 10bar, the lower chamber of the cartridge A2 7 is communicated with the return oil of the cylinder, and when the pressure at the lower chamber of the cartridge A2 7 is greater than the pressure of the back pressure valve to 10bar, the cartridge A2 7 is opened.
Specifically, the upper cavity of the injection oil cylinder 2 is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank 13; when the lower cavity of the injection cylinder 2 is supplied with oil through the system, the oil in the upper cavity of the injection cylinder 2 reaches the first hydraulic oil tank 13 through the electromagnetic directional valve A1 4. Preferably, the injection device further comprises a check valve A3, two ends of the check valve A3 are respectively communicated with the electromagnetic directional valve A1 and the lower cavity of the injection cylinder 2 through pipelines, and one end of the electromagnetic directional valve A1, which is far away from the check valve A3, is provided with a check valve a10 11. Preferably, the check valve a10 and the check valve A3 flow in the same direction. The flow direction of the check valve a10 is toward the electromagnetic directional valve A1 4, and when oil is supplied to the system, the oil reaches the electromagnetic directional valve A1 4 and further the upper chamber of the cartridge valve A2 via the check valve a10, and the electromagnetic directional valve A8 and the lower chamber of the injection cylinder 2 are replenished with oil. When oil is replenished in the lower cavity of the injection cylinder 2, the oil needs to reach the lower cavity of the injection cylinder 2 through the check valve A3. It is noted that the check valve is a one-way flow, so the system oil feed can only flow in the above-mentioned direction, but not flow in the opposite direction.
Preferably, a check valve A9 12 is connected in a pipeline of an end of the check valve a10 away from the electromagnetic directional valve A1, and a flow direction of the check valve A9 is opposite to a flow direction of the check valve A3. When the system is supplied with oil, the oil is prevented from reaching the side of the energy storage device 1.
Preferably, a second hydraulic oil tank 14 is connected to one end of the back pressure valve A7 far away from the electromagnetic directional valve A8 through a pipeline. The oil in the upper chamber of the cartridge A2 7 is pressed to the second hydraulic oil tank 14.
Preferably, a third hydraulic oil tank 15 is connected to the electromagnetic directional valve a 5. The oil in the upper chamber of the cartridge A4 8 can be pressed to the third hydraulic oil tank 15. In this embodiment, the port B of the electromagnetic directional valve A6 is closed, and the oil in the accumulator 1 does not pass through the electromagnetic directional valve A6.
The utility model provides a die casting machine injection system, including an accumulator 1 and an injection hydro-cylinder 2, be provided with an injection hydro-cylinder piston rod 3 in the injection hydro-cylinder 2 slidable, accumulator 1, the lower chamber of cartridge valve A4 and the upper chamber of injection hydro-cylinder 2 form an injection return circuit through the pipe connection; the energy accumulator 1, the electromagnetic directional valve A6 and the upper cavity of the cartridge valve A4 are connected through a pipeline to form a first oil pressure loop; the back pressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and a lower cavity of the injection oil cylinder 2 are connected through a pipeline to form a second oil pressure loop; the upper cavity of the injection oil cylinder 2 is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank 13; the lower cavity of the injection cylinder 2 is connected with the cartridge valve A2 through a pipeline and is connected with the first hydraulic oil tank 13. When the injection oil injection device works, the electromagnetic directional valve A6 is electrified, oil discharged from the energy accumulator 1 pushes the lower cavity of the cartridge valve A4, so that the oil in the upper cavity of the cartridge valve A4 is extruded to the electromagnetic directional valve A6, at the moment, the cartridge valve A4 is opened to control the size of the cartridge valve A4, and then the oil discharged from the energy accumulator 1 reaches the upper cavity of the injection oil cylinder 2 through the cartridge valve A4 to extrude the piston rod 3 of the injection oil cylinder, so that injection flow is provided; meanwhile, the back pressure valve A7 provides pressure for a pipeline, so that the upper cavity of the cartridge valve A2 is provided with the pressure provided by the back pressure valve A7, by adjusting the pressure P2 provided by the back pressure valve A7, when the pressure P1 of the oil discharged from the energy accumulator 1 to the upper cavity of the injection oil cylinder 2 is greater than P2, the cartridge valve A2 is opened, the oil in the lower cavity of the injection oil cylinder 2 is extruded to the first hydraulic oil tank 13, and the piston moves downwards at the moment, so that the purpose of controlling the acting force acting on the piston is achieved. Therefore, the injection system of the die-casting machine realizes the control of the speed and the pressure of the die-casting piston, ensures the speed and the pressure of the piston to be matched, ensures the accuracy of the pressure and the flow of oil supply, and avoids the occurrence of sudden stop, sudden start and the like during die-casting.
The preferred embodiments of the present invention disclosed above are merely provided to help illustrate the present invention, and do not limit the present invention to only the specific embodiments described above. Obviously, modifications and variations are possible in light of the above teachings. The embodiment that the present specification chose and specifically described is for the purpose of explaining the principles and practical applications of the present invention better to make the skilled person in the art understand and utilize well the present invention, it is not right the utility model discloses a limit, any right the scheme after the simple deformation of the utility model all belongs to the protection scope of the present invention.
Claims (6)
1. The utility model provides a die casting machine system of penetrating, includes that an energy storage ware and one penetrate the hydro-cylinder, it is provided with one in the hydro-cylinder slidable to penetrate hydro-cylinder piston rod, its characterized in that to penetrate: the hydraulic press-fit device is characterized by further comprising an electromagnetic directional valve A1, an electromagnetic directional valve A6, an electromagnetic directional valve A8, a cartridge valve A2, a cartridge valve A4 and a back pressure valve A7, wherein the energy accumulator, a lower cavity of the cartridge valve A4 and an upper cavity of the press-fit oil cylinder are connected through a pipeline to form a press-fit loop; the energy accumulator, the electromagnetic directional valve A6 and an upper cavity of the cartridge valve A4 are connected through a pipeline to form a first oil pressure loop; the back pressure valve A7, the electromagnetic directional valve A8, the cartridge valve A2 and a lower cavity of the injection oil cylinder are connected through a pipeline to form a second oil pressure loop; the upper cavity of the injection oil cylinder is connected with the electromagnetic directional valve A1 through a pipeline and is connected with a first hydraulic oil tank; the lower cavity of the injection oil cylinder is connected with the cartridge valve A2 through a pipeline and is connected with the first hydraulic oil tank.
2. The injection system of die casting machine as defined in claim 1 further comprising a check valve A3, both ends of said check valve A3 being respectively connected to said electromagnetic directional valve A1 and to the lower chamber of said injection cylinder through a pipe, and a check valve a10 being disposed at an end of said electromagnetic directional valve A1 remote from said check valve A3.
3. The die casting machine shot system of claim 2 wherein said check valve a10 is in the same flow direction as said check valve A3.
4. An injection system for a die casting machine as defined in claim 3 wherein a check valve A9 is connected to said conduit at the end of said check valve a10 remote from said solenoid A1, said check valve A9 flowing in a direction opposite to the direction of flow of said check valve A3.
5. The die casting machine shot-shooting system as defined in claim 1 wherein said back pressure valve A7 is piped to an end remote from said solenoid operated directional valve A8 to a second hydraulic reservoir.
6. The die casting machine shot system of claim 1 wherein a third hydraulic reservoir is connected to said electromagnetic directional valve A6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222676584.7U CN218598493U (en) | 2022-10-11 | 2022-10-11 | Injection system of die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222676584.7U CN218598493U (en) | 2022-10-11 | 2022-10-11 | Injection system of die casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN218598493U true CN218598493U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222676584.7U Active CN218598493U (en) | 2022-10-11 | 2022-10-11 | Injection system of die casting machine |
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| Country | Link |
|---|---|
| CN (1) | CN218598493U (en) |
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2022
- 2022-10-11 CN CN202222676584.7U patent/CN218598493U/en active Active
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