A cooling device for rubber molding mold

Abstract

The utility model provides a cooling device for a rubber molding mold, which relates to the field of mold cooling, and comprises an oil tank, an oil pump for sucking heat-conducting oil from the oil tank into the mold, and an air cooling unit for cooling the heat-conducting oil flowing out of the mold. A shunt system is arranged between the oil pump and the air cooling unit. In the utility model, when a thermometer monitors that the temperature of the heat-conducting oil in a second tube exceeds a preset range, a shunt valve shunts a small amount of heat-conducting oil in the second tube to the oil tank through a first shunt pipe, and performs a first cooling on the cooling oil in the third tube from the outside of the third tube. The heat-conducting oil in the oil tank will flow into the third tube through the second shunt pipe, and will be mixed with the heat-conducting oil in the third tube, and then a second cooling will be completed. After the second cooling, the temperature of the mixed heat-conducting oil in the third tube is lower than that of the heat-conducting oil just entering the third tube. Subsequently, the heat-conducting oil is cooled by the air cooling unit again, and the third cooling of the heat-conducting oil is completed, so that the temperature of the heat-conducting oil in the oil tank no longer rises, or even decreases.

Description

Technical Field

[0001] The utility model relates to the field of mold cooling, in particular to a cooling device for a rubber molding mold. Background Art

[0002] Whether the mold temperature is reasonable is directly related to the dimensional accuracy, appearance, internal quality, and production efficiency of the molded plastic parts. At this stage, the introduction of cooling devices with cooling water circuits in the mold can effectively manage the mold temperature. Of course, based on user feedback, there are also the following details that need to be optimized: During the circulation of heat transfer oil and other media, there are structures such as air cooling units to dissipate heat, but due to many factors such as cycle time and temperature in the mold, the temperature of the heat transfer oil in the oil tank will gradually increase during the cycle, and the cooling effect of the mold will deteriorate. The power of the air cooling unit needs to be increased to suppress the temperature rise, but the problems that come with it include increased noise and increased power consumption. Therefore, it is necessary to improve and optimize the above problems. Utility Model Content

[0003] The utility model aims to provide a cooling device for a rubber molding mold to solve the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A cooling device for a rubber molding mold comprises an oil tank, an oil pump for sucking heat transfer oil from the oil tank into the mold, and an air cooling unit for cooling the heat transfer oil flowing out of the mold, a flow splitting system is arranged between the oil pump and the air cooling unit, and the flow splitting system comprises a flow splitting valve and an oil tank;

[0006] The diverter valve is located in the oil pump inlet line;

[0007] The oil tank has a containing space, and the containing space surrounds the oil return pipeline;

[0008] The diverter valve is connected to the oil tank, and the oil tank is connected to the return oil pipeline through a one-way valve. It is used to divert the heat transfer oil to the oil tank through the diverter valve when the temperature of the heat transfer oil in the oil tank exceeds the limit, so as to cool the return oil pipeline.

[0009] Preferably, the heat transfer oil entering the oil return pipeline from the oil tank is cooled by an air cooling unit.

[0010] Preferably, the air cooling unit is connected to the oil tank.

[0011] Preferably, the air-cooled unit comprises a cooling pipeline and a fan, wherein the cooling pipeline is connected to the oil return pipeline;

[0012] The exhaust side of the fan faces the oil pump, and the blowing side of the fan faces the cooling pipeline.

[0013] Preferably, the oil tank is equipped with a first filter and a second filter, wherein the first filter is located at the oil inlet end of the oil inlet pipeline, and the second filter is located at the oil outlet end of the oil return pipeline.

[0014] Preferably, there is a cooling water circuit in the mold, and the heat transfer oil enters the cooling water circuit through the oil pump oil inlet pipeline and then enters the oil tank through the oil return pipeline.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, when the thermometer monitors that the temperature of the heat transfer oil in the second tube exceeds a preset range, the diverter valve diverts a small amount of heat transfer oil in the second tube to the oil tank through the first diverter pipe, and performs the first cooling of the cooling oil in the third tube from the outside of the third tube. The heat transfer oil in the oil tank will flow into the third tube through the second diverter pipe, and mix with the heat transfer oil in the third tube, thereby completing the second cooling. After the second cooling, the temperature of the mixed heat transfer oil in the third tube is lower than that of the heat transfer oil just entering the third tube. Subsequently, the heat transfer oil is cooled by the air cooling unit to complete the third cooling of the heat transfer oil, so that the temperature of the heat transfer oil in the oil tank no longer rises, or even decreases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a cooling device for a rubber molding mold;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure under a reverse perspective;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure numerals: 1. frame; 2. oil tank; 3. first filter; 4. second filter; 5. oil pump; 6. air cooling unit; 7. first pipe; 8. second pipe; 9. third pipe; 10. fourth pipe; 11. diverter valve; 12. oil tank; 13. tee; 14. first diverter pipe; 15. second diverter pipe. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] In this embodiment, a cooling device for a rubber molding mold is provided. Figure 1-Figure 3 The cooling device of the rubber molding mold includes an oil tank 2, an oil pump 5 for sucking heat-conducting oil from the oil tank 2 into the mold, and an air cooling unit 6 for cooling the heat-conducting oil flowing out of the mold.

[0025] Further explanation: the oil tank 2, the oil pump 5 and the air cooling unit 6 are fixed on Figure 1 and Figure 2 In the frame 1 shown, specifically, the oil tank 2 is located at the top of the frame 1 , and the oil pump 5 and the air cooling unit 6 are located inside the frame 1 .

[0026] To further explain, the air-cooled unit 6 includes a cooling pipeline and a fan, wherein the exhaust side of the fan faces the oil pump 5, and the blowing side of the fan faces the cooling pipeline. In this way, the fan will cause airflow changes at the air-cooled unit 6 to assist the working oil pump 5 in heat dissipation.

[0027] See also Figure 1 and Figure 2 , in this embodiment, a plurality of pipelines are provided;

[0028] First, the oil pump 5 is equipped with a first pipe 7 and a second pipe 8, wherein the first pipe 7 is connected to the oil outlet of the oil tank 2, and the second pipe 8 is connected to the cooling water circuit in the mold. It should be noted that the first pipe 7, the oil pump 5 and the second pipe 8 constitute an oil inlet pipeline.

[0029] Second, the air cooling unit 6 is equipped with a third pipe 9 and a fourth pipe 10, wherein the fourth pipe 10 is connected to the oil tank 2, and the fourth pipe 10 is connected to the cooling water circuit in the mold. It should be noted that the third pipe 9, the air cooling unit 6, and the fourth pipe 10 constitute an oil return pipeline.

[0030] See also Figure 1-Figure 3 There is a flow diversion system between the oil pump 5 and the air cooling unit 6.

[0031] Regarding the diversion system, it includes a diverter valve 11 located in the second pipe 8 and an oil tank 12 located in the third pipe 9, wherein the diverter valve 11 is equipped with a thermometer (not shown in the figure), the thermometer enters the second pipe 8 to monitor the temperature of the heat transfer oil in the second pipe 8, and the oil tank 12 has a accommodating space, which surrounds the third pipe 9.

[0032] To further explain, the diverter valve 11 is connected to the oil tank 12 via the first diverter pipe 14, and the oil tank 12 is connected to the third pipe 9 via the second diverter pipe 15. It should be added that the third pipe 9 is equipped with a tee 13, which has a one-way valve, wherein the second diverter pipe 15 is connected to the one-way valve, so that the heat transfer oil in the third pipe 9 cannot flow back into the oil tank 12.

[0033] To further illustrate, when the temperature of the heat transfer oil in the second tube 8 monitored by the thermometer exceeds the preset range (high value of the range), the temperature drops as follows:

[0034] First, the diverter valve 11 diverts a small amount of heat transfer oil in the second pipe 8 to the oil tank 12 through the first diverter pipe 14, and cools the cooling oil in the third pipe 9 for the first time from the outside of the third pipe 9.

[0035] Second, the heat transfer oil in the oil tank 12 will flow into the third pipe 9 through the second diversion pipe 15, and mix with the heat transfer oil in the third pipe 9, thereby completing the second cooling.

[0036] Third, after the second cooling, the temperature of the mixed heat transfer oil in the third tube 9 is lower than that of the heat transfer oil just entering the third tube 9. Subsequently, the heat transfer oil is cooled by the air cooling unit 6 to complete the third cooling of the heat transfer oil, so that the temperature of the heat transfer oil in the oil tank 2 no longer rises, or even decreases.

[0037] It should be added that, in the present embodiment, an array of cooling fins (not shown in the figure) may be arranged outside the oil tank 12 to obtain a better heat dissipation effect. Of course, the oil tank 12 may be in contact with structures such as the frame 1, so that the frame 1 serves as a good heat-conducting structure to cool the oil tank 12, thereby assisting in cooling the third tube 9 and the heat-conducting oil therein.

[0038] In this embodiment, the following features need to be explained:

[0039] First, the frame 1 is a hollow frame, which can help heat dissipate outwards.

[0040] Second, there is a cooling water circuit in the mold. After the heat transfer oil enters the cooling water circuit through the oil inlet pipeline of the oil pump 5, it enters the oil tank 2 through the oil return pipeline.

[0041] Third, the oil tank 2 is equipped with a first filter 3 and a second filter 4 , both of which are oil filters, wherein the first filter 3 is connected to the first pipe 7 , and the second filter 4 is connected to the fourth pipe 10 .

[0042] Fifth, the diverter valve 11 is an electrically controlled valve, and its main body includes a valve body and a tee, two ports of the tee are respectively connected to the second pipe 8, and the remaining port of the tee is connected to the first diverter pipe 14, and the valve body is connected to the thermometer signal;

[0043] Specifically, when the thermometer monitors that the temperature of the heat transfer oil in the second tube 8 exceeds a preset range, the valve body connects the first shunt tube 14 with the second tube 8 (the opening is controlled by the valve body according to the temperature conditions). When the thermometer monitors that the temperature of the heat transfer oil in the second tube 8 is within the preset range, the first shunt tube 14 and the second tube 8 are closed.

[0044] Sixth, after the diverter valve 11 diverts the heat transfer oil to the first diverter pipe 14, the power of the oil pump 5 can be slightly increased to compensate for the problem of a decrease in flow rate in the second pipe 8 caused by the diversion of the heat transfer oil.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cooling device for a rubber molding mold, comprising an oil tank, an oil pump for sucking heat transfer oil from the oil tank into the mold; and an air cooling unit for cooling the heat transfer oil flowing out of the mold, characterized in that: A flow diversion system is provided between the oil pump and the air-cooled unit, and the flow diversion system includes a flow diversion valve and an oil tank; The diverter valve is located in the oil pump inlet line; The oil tank has a containing space, and the containing space surrounds the oil return pipeline; The diverter valve is connected to the oil tank, and the oil tank is connected to the return oil pipeline through a one-way valve. It is used to divert the heat transfer oil to the oil tank through the diverter valve when the temperature of the heat transfer oil in the oil tank exceeds the limit, so as to cool the return oil pipeline.

2. A cooling device for a rubber molding mold according to claim 1, characterized in that: The heat transfer oil enters the oil return pipeline from the oil tank and is cooled by the air cooling unit.

3. A cooling device for a rubber molding mold according to claim 2, characterized in that: The air-cooled unit is connected to the oil tank.

4. A cooling device for a rubber molding mold according to claim 3, characterized in that: The air-cooled unit includes a cooling pipeline and a fan, wherein the cooling pipeline is connected to the oil return pipeline; The exhaust side of the fan faces the oil pump, and the blowing side of the fan faces the cooling pipeline.

5. The cooling device for a rubber molding mold according to claim 1, characterized in that: The oil tank is equipped with a first filter and a second filter, wherein the first filter is located at the oil inlet end of the oil inlet pipeline, and the second filter is located at the oil outlet end of the oil return pipeline.

6. The cooling device for a rubber molding mold according to claim 1, characterized in that: There is a cooling water circuit in the mold. After the heat transfer oil enters the cooling water circuit through the oil pump oil inlet pipeline, it enters the oil tank through the oil return pipeline.

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