间接冷却式模具温度调节机

Abstract

本实用新型涉及一种间接冷却式模具温度调节机，包括：置于最高位置处的水箱(2)，通过所述的水箱(2)顶盖上的手动补水口，向所述的水箱(2)内注入特定的系统水；增压泵(4)，通过增压泵排气旁通阀(31)形成水位差，使得所述的系统水自然流入所述的增压泵(4)内；设置于加热筒(12)一侧的增压泵(4)，用于进行媒体加热处理；设置于冷却水出口上的冷却电磁阀(27)，通过将冷却水流经板式换热器(5)，进行媒体冷却处理；压缩空气手动球阀(29)，用于在待机状态且媒体温度低于预设温度时，关闭媒体出主管手动球阀(18)压缩空气供给；以及在增压泵(4)出口位置处设置有连接至水箱(2)的旁路的增压泵旁路流量调节阀(8)。

Claims

1. An indirect cooling mold temperature regulating machine, characterized in that, The regulating machine includes: The water tank (2) located at the highest position is filled with specific system water through the manual water inlet on the top cover of the water tank (2); The booster pump (4) is located at the bottom of the water tank (2). The booster pump (4) is equipped with a booster pump exhaust bypass valve (31) at the outlet position. A water level difference is formed through the booster pump exhaust bypass valve (31), so that the system water flows naturally into the booster pump (4). A booster pump (4) is installed on one side of the heating cylinder (12). When the booster pump (4) is running, it drives the system water in the water tank (2) to be transported to the heating cylinder (12) for media heating treatment. The cooling solenoid valve (27) installed on the cooling water outlet performs media cooling treatment by allowing cooling water to flow through the plate heat exchanger (5). A heat exchanger bypass flow regulating valve (33) is installed at the lower part of the plate heat exchanger (5). By manually adjusting the heat exchanger bypass flow regulating valve (33), the flow rate of the media flowing through the plate heat exchanger (5) is changed, thereby controlling the cooling capacity of the regulating machine. A manual compressed air ball valve (29) is used to close the compressed air supply to the main media outlet manual ball valve (18) when the medium is in standby mode and the medium temperature is lower than a preset temperature; and A booster pump bypass flow regulating valve (8) is provided at the outlet of the booster pump (4) and connected to the water tank (2). The booster pump bypass flow regulating valve (8) measures the pressure value at the outlet of the booster pump (4) through the system water pressure sensor (10) and adjusts the current outlet pressure to the system pressure value required for the media setting temperature.

2. The indirect-cooled mold temperature regulator of claim 1 wherein, The water tank (2) is equipped with a first cooling coil (19), a second cooling coil (20), an anti-splash elbow (21), and a double float switch (22). The first cooling coil (19) is connected to the outlet of the booster pump (4) and the booster pump bypass flow regulating valve (8) to pre-cool the heat medium discharged from the heating cylinder (12) to the water tank (2). The second cooling coil (20) is connected to the cooling water inlet and the cooling water outlet to cool the system water in the water tank (2) for a long time. The anti-splash elbow (21) is located at the overflow port of the water tank (2) to prevent the system water from overflowing due to airflow fluctuations during compression and drainage. The upper ball of the double float switch (22) is used to control the full water level of the water tank (2), and the lower ball is used to control the low water level of the water tank (2). A level gauge (1) is located on the outside of the water tank (2).

3. The indirect-cooled mold temperature conditioner of claim 1 wherein, When the regulator needs to perform a media cooling operation, the heating cylinder (12) stops working and the cooling solenoid valve (27) is opened at the same time or according to the PID control interval, so that the cooling water flows through the plate heat exchanger (5) for media cooling treatment until the set temperature is reached.

4. The indirect-cooled mold temperature conditioner of claim 1 wherein, The system water pressure sensor (10) is connected to one side of the heating cylinder (12), and the other side of the heating cylinder (12) is connected to the media pump (14). An overheating preventer (11) is provided on the heating cylinder (12), and the upper part of the heating cylinder (12) is also connected to a single float switch (3). The other side of the single float switch (3) is connected to an exhaust solenoid valve (9). The exhaust solenoid valve (9) is connected to the booster pump bypass flow regulating valve (8) through a needle valve (17). When the booster pump (4) is running and the exhaust solenoid valve (9) is open, the media pump (14) immediately obtains system water through the media exhaust bypass pipe (32) set at the outlet of the media pump (14). After the single float switch (3) obtains a full water signal, the media pump (14) starts to run, and after completing the initial exhaust operation, the exhaust solenoid valve (9) is closed.

5. The indirect-cooled mold temperature conditioner of claim 4 wherein, When the regulating machine needs to perform a medium heating operation, the heating cylinder (12) heats the medium according to the set medium temperature, and when there is still 5°C away from reaching the set temperature, the medium temperature is controlled by PID until the set temperature is reached; at the same time, before the heating cylinder (12) enters PID control, the exhaust solenoid valve (9) is opened at a preset time interval to discharge the air in the internal pipeline.

6. The indirect-cooled mold temperature conditioner of claim 4 wherein, When the regulating machine needs to perform compressed air drainage, first close the manual ball valve (18) of the media outlet main pipe and open the manual ball valve (29) of the compressed air to supply compressed air. Then click the air drainage button on the operation panel. After a few seconds, the exhaust solenoid valve (9) opens. The compressed air flows through the one-way valve (25) located at the compressed air inlet from the first branch through the media branch manual ball valve (30), mold, media loop filter (6), media loop one-way valve (26), plate heat exchanger (5), and through the second branch through the heating cylinder (12), single float switch (3) and first cooling coil (19). After the compressed media is discharged into the water tank (2), the pressure of the media and air entering the water tank (2) is reduced by the first cooling coil (19), reducing the disturbance to the media in the water tank (2).

7. The indirect-cooled mold temperature conditioner of claim 4 wherein, The needle valve (17) is located at the outlet of the exhaust solenoid valve (9). By adjusting the needle valve (17), the amount of water discharged from the heating cylinder (12) to the water tank (2) can be changed.

8. The indirect-cooled mold temperature conditioner of claim 7 wherein, A system water check valve (34) and a system water safety valve (16) are provided between the booster pump (4) and the heating cylinder (12). The system water check valve (34) is used to prevent the high-temperature and high-pressure medium in the heating cylinder (12) from being depressurized to the water tank (2) through the pipeline when the regulator is in a stopped state. The system water safety valve (16) is used to prevent the pressure relief port from being opened and the pressure of the high-temperature medium in the heating cylinder (12) from being too high and exceeding the set value when the regulator is in a stopped state. The pressure relief port is opened and the pressure is slowly released through the pipeline connected to the water tank (2).

9. The indirectly cooled mold temperature conditioning machine of claim 8, wherein, When the mold is positioned significantly higher than the water tank (2), the exhaust solenoid valve (9) and the system water check valve (34) block the media path flowing back into the water tank (2), thereby preventing the system water in the water tank (2) from overflowing.

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