Hydraulic oil cooling device of automobile die oil press

Abstract

The utility model discloses a hydraulic oil cooling device for an automobile die oil press. The hydraulic oil cooling device comprises a water condenser, a first hydraulic oil pipe, an oil tank, a second hydraulic oil pipe, a third hydraulic oil pipe, an oil pump and an oil pump motor. The first hydraulic oil pipe is communicated with the water condenser and the oil tank, the second hydraulic oil pipe is communicated with the water condenser and the oil tank, and when the automobile die oil press runs, the water condenser and the oil tank form a first cooling circulation oil way through the first hydraulic oil pipe and the second hydraulic oil pipe; the oil pump motor is connected with the oil pump, the oil inlet end of the oil pump is communicated with the oil tank, the oil outlet end of the oil pump is communicated with the second hydraulic oil pipe through the third hydraulic oil pipe, and when the automobile die oil press is shut down, the oil pump, the water condenser and the oil tank form a second cooling circulation oil way through the first hydraulic oil pipe, the second hydraulic oil pipe and the third hydraulic oil pipe. The utility model relates to the technical field of oil press equipment, and can solve the problem that residual heat of hydraulic oil cannot be cooled when an automobile die oil press in the prior art is shut down.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press equipment technology, and in particular to a hydraulic oil cooling device for an automotive mold hydraulic press. Background Technology

[0002] During operation, the hydraulic oil in an automotive mold hydraulic press is prone to overheating. To ensure the normal operation of the press, the hydraulic oil needs to be cooled. Currently, most automotive mold hydraulic presses use water condensers for cooling. During operation, the hydraulic oil circulates between the press and the condenser, utilizing cooling water to lower its temperature.

[0003] However, when an automotive mold hydraulic press stops operating, the hydraulic oil stops flowing simultaneously, preventing the water condenser from cooling the residual heat of the hydraulic oil in the tank. This leads to overheating of the oil inside the hydraulic press, causing damage to the internal seals and potentially resulting in a safety accident. Therefore, there is a need for a hydraulic oil cooling device for automotive mold hydraulic presses that can solve the problem of insufficient cooling of residual hydraulic oil when the press stops. Summary of the Invention

[0004] The purpose of this utility model is to provide a hydraulic oil cooling device for automotive mold hydraulic presses, which can solve the problem that the residual temperature of hydraulic oil cannot be cooled when the automotive mold hydraulic press is stopped in the prior art.

[0005] This utility model is implemented as follows:

[0006] A hydraulic oil cooling device for an automotive mold hydraulic press includes a water condenser, a first hydraulic oil pipe, an oil tank, a second hydraulic oil pipe, a third hydraulic oil pipe, an oil pump, and an oil pump motor. The water condenser is installed next to the oil tank of the automotive mold hydraulic press and is connected to circulating condensate. One end of the first hydraulic oil pipe connects the water condenser to the oil tank, and the other end of the second hydraulic oil pipe connects the water condenser to the oil tank. When the automotive mold hydraulic press is running, the water condenser and the oil tank form a first cooling circulation oil circuit through the first and second hydraulic oil pipes. The oil pump is installed next to the water condenser, and the oil pump motor is connected to the oil pump. The oil inlet of the oil pump is connected to the oil tank, and the oil outlet of the oil pump is connected to the second hydraulic oil pipe through the third hydraulic oil pipe. When the automotive mold hydraulic press is stopped, the oil pump, the water condenser, and the oil tank form a second cooling circulation oil circuit through the first, second, and third hydraulic oil pipes.

[0007] The hydraulic oil cooling device for the automotive mold hydraulic press also includes a PLC controller, the output of which is electrically connected to the oil pump motor.

[0008] The oil tank is equipped with a temperature sensor, and the output of the temperature sensor is electrically connected to the input of the PLC controller.

[0009] Compared with the prior art, this utility model has the following advantages:

[0010] 1. This utility model has a first cooling circulation oil circuit and a second cooling circulation oil circuit. When the automotive mold hydraulic press is running, the hydraulic oil circulates in the first cooling circulation oil circuit, and the hydraulic oil can be cooled to a suitable working temperature by a water condenser. When the automotive mold hydraulic press is stopped, the hydraulic oil is actively drawn out by the oil pump and oil pump motor, and the hydraulic oil circulates in the second cooling circulation oil circuit, where the residual temperature of the hydraulic oil can be cooled by a water condenser. This prevents the internal sealing ring of the oil tank from being damaged due to the oil temperature rising in the automotive mold hydraulic press, thereby avoiding the occurrence of safety accidents.

[0011] 2. This utility model is equipped with a temperature sensor and a PLC controller. The PLC controller controls the start and stop of the oil pump motor based on the residual temperature of the hydraulic oil in the oil tank detected by the temperature sensor, so as to realize intelligent cooling of the residual temperature of the hydraulic oil after the automotive mold hydraulic press is stopped, and shuts down the oil pump motor after the hydraulic oil temperature drops to a safe range, thus saving energy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hydraulic oil cooling device for an automotive mold hydraulic press, which is part of this utility model.

[0013] In the diagram, 1 is a water condenser, 2 is the first hydraulic oil pipe, 3 is an oil tank, 31 is a temperature sensor, 4 is the second hydraulic oil pipe, 5 is the third hydraulic oil pipe, 6 is an oil pump, 7 is an oil pump motor, 8 is an automotive mold hydraulic press, and 9 is a PLC controller. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Please see the appendix Figure 1A hydraulic oil cooling device for an automotive mold hydraulic press includes a water condenser 1, a first hydraulic oil pipe 2, an oil tank 3, a second hydraulic oil pipe 4, a third hydraulic oil pipe 5, an oil pump 6, and an oil pump motor 7. The water condenser 1 is installed beside the oil tank 3 of the automotive mold hydraulic press 8, and is externally connected to circulating condensate. One end of the first hydraulic oil pipe 2 connects the water condenser 1 to the oil tank 3, and the other end of the second hydraulic oil pipe 4 connects the water condenser 1 to the oil tank 3. When the automotive mold hydraulic press 8 is running, the water condenser... The oil pump 6 is installed next to the water condenser 1. The oil pump motor 7 is connected to the oil pump 6. The oil inlet of the oil pump 6 is connected to the oil tank 3. The oil outlet of the oil pump 6 is connected to the second hydraulic oil pipe 4 through the third hydraulic oil pipe 5. When the automotive mold hydraulic press 8 stops, the oil pump 6, the water condenser 1 and the oil tank 3 form a second cooling oil circuit through the first hydraulic oil pipe 2, the second hydraulic oil pipe 4 and the third hydraulic oil pipe 5.

[0016] The water condenser 1 circulates condensate. The water condenser 1 is equipped with a hydraulic oil pipe that connects the first hydraulic oil pipe 2 and the second hydraulic oil pipe 4, so that the hydraulic oil can exchange heat with the circulating condensate when it flows through the hydraulic oil pipe, thereby achieving the purpose of cooling the hydraulic oil.

[0017] The volume of the water condenser 1, and the size and shape of the hydraulic oil pipelines, can be adaptively adjusted according to actual cooling requirements to ensure that the water condenser 1 can effectively cool the hydraulic oil to a suitable operating temperature. Existing water condensation equipment has a relatively small volume; in this invention, the circulation cooling efficiency of the hydraulic oil can be improved by increasing the volume of the water condenser 1.

[0018] When the automotive mold hydraulic press 8 is running, the heated hydraulic oil circulates in the first cooling circulation circuit to achieve cooling. When the automotive mold hydraulic press 8 stops, the hydraulic oil also stops flowing simultaneously, and the oil pump motor 7 is started. The oil pump motor 7 works with the oil pump 6 to draw the hydraulic oil out of the oil tank 3 and pump it through the third hydraulic oil pipe 5 and the second hydraulic oil pipe 4 to the water condenser 1 for cooling. Then, it flows back to the oil tank 3 through the first hydraulic oil pipe 2. This provides continuous cooling for the hydraulic oil through the second cooling circulation circuit, preventing the residual heat of the hydraulic oil from causing high-temperature damage to the internal seals of the oil tank, thereby avoiding safety accidents.

[0019] The hydraulic oil cooling device for the automotive mold hydraulic press also includes a PLC controller 9, the output of which is electrically connected to the oil pump motor 7.

[0020] The start and stop of the oil pump motor 7 can be controlled by the PLC controller 9, which facilitates the cooling of the hydraulic oil residual temperature by the second cooling circulation oil circuit, and also facilitates remote and intelligent control through the PLC controller 9.

[0021] Preferably, when the automotive mold hydraulic press 8 stops, the oil pump motor 7 can be started synchronously via the PLC controller 9 to facilitate the cooling of the residual temperature of the hydraulic oil.

[0022] The oil tank 3 is equipped with a temperature sensor 31, and the output terminal of the temperature sensor 31 is electrically connected to the input terminal of the PLC controller 9.

[0023] Temperature sensor 31 is used to monitor the temperature of hydraulic oil in oil tank 3 in real time or periodically, and uses the temperature of hydraulic oil as the control condition of PLC controller 9 for oil pump motor 7 to achieve intelligent control.

[0024] Specifically, a temperature threshold can be set in the PLC controller 9. When the hydraulic oil temperature exceeds the threshold, it may cause high-temperature damage to the internal seals of the oil tank. In this case, the oil pump motor 7 needs to be started via the PLC controller 9 to continue cooling the hydraulic oil even when the automotive mold hydraulic press 8 is stopped. When the hydraulic oil temperature is below the threshold, it will not cause high-temperature damage to the internal seals of the oil tank. In this case, the oil pump motor 7 can be shut down via the PLC controller 9 to save energy.

[0025] Please see the appendix Figure 1 The working process and working principle of this utility model are as follows:

[0026] When the automotive mold hydraulic press 8 is running normally, the hydraulic oil of the automotive mold hydraulic press 8 enters the water condenser 1 through the first hydraulic oil pipe 2 and exchanges heat with the circulating condensate in the water condenser 1 to achieve cooling. The cooled hydraulic oil then circulates back to the automotive mold hydraulic press 8 through the second hydraulic oil pipe 4 to ensure the normal and continuous operation of the automotive mold hydraulic press 8.

[0027] When the automotive mold hydraulic press 8 stops, the hydraulic oil stops flowing synchronously, and the temperature sensor 31 in the oil tank 3 monitors the temperature of the hydraulic oil in real time. The PLC controller 9 is started, and the PLC controller 9 collects the temperature data monitored by the temperature sensor 31. A temperature threshold can be set in the PLC controller 9. When the temperature monitored by the temperature sensor 31 exceeds the temperature threshold, the PLC controller 9 sends a start electrical signal to the oil pump motor 7 to control the oil pump motor 7 to start.

[0028] The oil pump motor 7 works in conjunction with the oil pump 6 to draw out the hydraulic oil from the oil tank 3 and pump it through the third hydraulic oil pipe 5 and the second hydraulic oil pipe 4 to the water condenser 1. The oil then exchanges heat with the circulating condensate in the water condenser 1 to achieve cooling. The cooled hydraulic oil then circulates back into the oil tank 3 through the first hydraulic oil pipe 2.

[0029] When the temperature monitored by temperature sensor 31 drops below the temperature threshold, the hydraulic oil temperature in oil tank 3 is low, preventing damage to the internal seals due to increased oil temperature and thus avoiding safety accidents. At this time, PLC controller 9 sends a shutdown signal to oil pump motor 7, controlling the oil pump motor 7 to stop.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A hydraulic oil cooling device for an automotive mold hydraulic press, characterized in that: The application relates to an automobile mold oil hydraulic press hydraulic oil cooling device which comprises a water condenser (1), a first hydraulic oil pipe (2), an oil tank (3), a second hydraulic oil pipe (4), a third hydraulic oil pipe (5), an oil pump (6) and an oil pump motor (7); the water condenser (1) is installed beside the oil tank (3) of an automobile mold oil hydraulic press (8), and the water condenser (1) is externally connected with circulating condensing water; one end of the first hydraulic oil pipe (2) is communicated with the oil tank (3) and the other end of the second hydraulic oil pipe (4) is communicated with the oil tank (3); when the automobile mold oil hydraulic press (8) is running, the water condenser (1) and the oil tank (3) form a first cooling circulation oil path through the first hydraulic oil pipe (2) and the second hydraulic oil pipe (4); the oil pump (6) is installed beside the water condenser (1), the oil pump motor (7) is connected with the oil pump (6), the oil inlet end of the oil pump (6) is communicated with the oil tank (3), the oil outlet end of the oil pump (6) is communicated with the second hydraulic oil pipe (4) through the third hydraulic oil pipe (5), and when the automobile mold oil hydraulic press (8) is stopped, the oil pump (6), the water condenser (1) and the oil tank (3) form a second cooling circulation oil path through the first hydraulic oil pipe (2), the second hydraulic oil pipe (4) and the third hydraulic oil pipe (5).

2. The hydraulic oil cooling device for an automobile mold hydraulic press according to claim 1, characterized in that: The automobile mold oil hydraulic press hydraulic oil cooling device further comprises a PLC controller (9), and the output end of the PLC controller (9) is electrically connected with the oil pump motor (7).

3. The hydraulic oil cooling device for an automobile mold hydraulic press according to claim 2, characterized in that: The oil tank (3) is internally provided with a temperature sensor (31), and the output end of the temperature sensor (31) is electrically connected with the input end of the PLC controller (9).

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