Multi-temperature mold temperature device for injection molding machine

Abstract

The utility model relates to the technical field of injection molding processing, in particular to a multi-temperature type mold temperature device for an injection molding machine, which comprises a heating component for heating oil, the heating component is provided with a plurality of liquid inlet ends and liquid outlet ends which are communicated with the inside of the heating component, and the middle of the inner side of each liquid outlet end is provided with a cooling pipe with a spiral structure. The upper end of the cooling pipe is communicated with the liquid supply pipe penetrating through the liquid outlet end, the lower end of the cooling pipe is communicated with the liquid outlet pipe penetrating through the liquid outlet end, a control valve is arranged on the liquid supply pipe, temperature sensors are arranged at the two ends of the liquid outlet end, and the temperature sensors are in signal connection with the control valve. The flow of the cooling liquid is controlled through the control valve, that is, the larger the difference between the value detected by the temperature sensor at the liquid inlet of the liquid outlet end and the set oil outlet temperature value is, the larger the flow is, so that it is ensured that the output oil body reaches the set temperature, and the oil outlet temperatures of different liquid outlet ends can be different.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a multi-temperature mold temperature device for an injection molding machine. Background Art

[0002] The mold temperature controller is a device used to control the mold temperature during the plastic injection molding process. It regulates the temperature of the mold by circulating heating and cooling fluid to ensure the quality and molding efficiency of plastic products. At present, the injection molding machine is usually equipped with a mold temperature controller to achieve the above function.

[0003] Due to the different shapes of plastic parts, the molding temperatures of the corresponding parts of the mold are different. Therefore, two or more temperatures are required during the molding process of some molds to ensure that each part of the mold meets the standards stably and produce high-quality products. Different oil temperatures usually require multiple mold temperature controllers to achieve, which leads to crowded space at the injection molding site. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides the following technical solutions:

[0005] A multi-temperature mold temperature device for an injection molding machine, comprising:

[0006] A heating component for heating an oil body, wherein the heating component has a plurality of liquid inlet ends and liquid outlet ends connected to the interior of the heating component, a cooling tube with a spiral structure is provided in the middle of the inner side of the liquid outlet end, the upper end of the cooling tube is connected to a liquid supply tube passing through the liquid outlet end, and the lower end is connected to a liquid outlet tube passing through the liquid outlet end, the liquid supply tube is provided with a control valve, and temperature sensors are provided at both ends of the liquid outlet end, and the temperature sensor is connected to the control valve signal.

[0007] As an improvement of the above technical solution, the heating component includes a shell, a partition plate is provided in the middle of the inner side of the shell, the outer wall of the partition plate and the inner wall of the shell form a confluence cavity with a U-shaped cross-section, the top of the partition plate is provided with a top plate, and the top plate and the inner upper part of the shell form a diversion cavity, the cavity on the inner side of the partition plate connects the confluence cavity and the diversion cavity, the bottom surface of the shell is provided with a heater, and the working part of the heater extends into the confluence cavity.

[0008] As an improvement of the above technical solution, the liquid inlet end is located on the side wall of the shell and communicates with the upper part of the confluence cavity, and the liquid outlet end is located on the top surface of the shell and communicates with the diversion cavity.

[0009] As an improvement of the above technical solution, there are multiple cavities which are evenly arranged, the working part of the heater is an M-shaped structure, the raised parts on the working part of the heater are all located in the corresponding cavities, and the top end is located in the cavity.

[0010] As an improvement of the above technical solution, the side wall at the lower end of the partition plate is connected to the inner wall of the shell through a support plate with a hollow structure.

[0011] As an improvement of the above technical solution, the cooling tube is made of copper and has fins evenly distributed on its surface.

[0012] Beneficial effects of the utility model:

[0013] 1. Since there are multiple liquid inlet and outlet ends, they can be connected to different oil circuits on one mold or multiple molds. In order to achieve the mold temperature required by different molds, a cooling pipe is set at the liquid outlet end. When the working temperature needs to be adjusted, the oil is heated to the set maximum temperature, and then cooled according to the temperature required by different molds or oil circuits. Since there are temperature sensors at both ends of the liquid outlet, the temperature sensor at the liquid inlet of the liquid outlet is used to detect the actual temperature of the oil entering the liquid outlet, and the temperature sensor at the liquid outlet of the liquid outlet is used to detect the actual temperature of the oil discharged from the liquid outlet, thereby improving the accuracy of temperature detection and the control of different temperatures.

[0014] 2. The spiral structure of the cooling tube not only increases the contact area with the oil body and improves the heat exchange efficiency, but also the coolant flow direction inside the cooling tube is opposite to the flow direction of the oil body, which also has higher cooling efficiency. In addition, the cooling tube is made of copper, which has better thermal conductivity, and the fins are evenly distributed on the surface, which further improves the heat exchange efficiency. Since the flow rate at the outlet end is basically the same, in order to reduce the oil body to different temperatures in the same time, the flow rate of the coolant is controlled by a control valve, that is, the greater the difference between the temperature sensor detection value at the outlet end and the set oil outlet temperature value, the greater the flow rate, so as to ensure that the output oil reaches the set temperature, and the oil outlet temperatures at different outlet ends can be different. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 One of the three-dimensional diagrams of a multi-temperature mold temperature device for an injection molding machine;

[0016] Figure 2 This is the second stereoscopic diagram of a multi-temperature mold temperature device for an injection molding machine;

[0017] Figure 3 One of the side views of a heating component in a multi-temperature mold temperature device for an injection molding machine;

[0018] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0019] Figure 5 for Figure 3 Sectional view at the middle BB;

[0020] Figure 6The second side view of a heating component in a multi-temperature mold temperature device for an injection molding machine;

[0021] Figure 7 for Figure 6 Sectional view at CC;

[0022] Figure 8 It is a side view of the liquid outlet end of a multi-temperature mold temperature device for an injection molding machine;

[0023] Fig. 9 for Figure 8 Cross-sectional view at DD in the middle.

[0024] Figure numerals: 10, liquid inlet end; 20, liquid outlet end; 30, cooling pipe; 40, liquid supply pipe; 50, liquid outlet pipe; 60, control valve; 70, temperature sensor; 81, shell; 82, partition plate; 83, confluence chamber; 84, top plate; 85, diversion chamber; 86, cavity; 87, heater; 88, protrusion; 89, support plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] Due to the different shapes of plastic parts, the molding temperatures of the corresponding parts of the mold are different. Therefore, two or more temperatures are required during the molding process of some molds to ensure that each part of the mold meets the standards stably and produce high-quality products. Different oil temperatures usually require multiple mold temperature controllers to achieve, which leads to crowded space at the injection molding site.

[0027] See attached Figure 1-9 As shown, in order to solve the above problems, the utility model provides a technical solution of a multi-temperature mold temperature device for an injection molding machine:

[0028] A multi-temperature mold temperature device for an injection molding machine comprises: a heating component, a liquid inlet end 10, a liquid outlet end 20, a cooling pipe 30, a liquid supply pipe 40, a liquid outlet pipe 50, a control valve 60 and a temperature sensor 70.

[0029] Among them, the heating component is used to heat the oil body. The heating component has multiple liquid inlet ends 10 and liquid outlet ends 20 connected to the inside of the heating component. The circulating oil circuit formed by the liquid inlet end 10, the liquid outlet end 20 and the mold also includes at least a pump body, which is used to provide power for the circulation of the oil body.

[0030] A cooling tube 30 with a spiral structure is provided in the middle of the inner side of the liquid outlet end 20. The upper end of the cooling tube 30 is connected to a liquid supply tube 40 passing through the liquid outlet end 20, and the lower end is connected to a liquid outlet tube 50 passing through the liquid outlet end 20. A control valve 60 is provided on the liquid supply tube 40. Temperature sensors 70 are provided at both ends of the liquid outlet end 20, and the temperature sensor 70 is connected to the control valve 60 signal.

[0031] Since there are multiple liquid inlet ends 10 and liquid outlet ends 20, they can be connected to different oil circuits on one mold or oil circuits on multiple molds. In order to achieve the mold temperature required by different molds, a cooling pipe 30 is provided at the liquid outlet end 20. When the working temperature needs to be adjusted, the oil body is heated to the set maximum temperature, and then cooled according to the temperature required by different molds or oil circuits. Since there are temperature sensors 70 at both ends of the liquid outlet end 20, the temperature sensor 70 at the liquid inlet of the liquid outlet end 20 is used to detect the actual temperature of the oil body entering the liquid outlet end 20, and the temperature sensor 70 at the liquid outlet of the liquid outlet end 20 is used to detect the actual temperature of the oil body discharged from the liquid outlet end 20, thereby improving the accuracy of temperature detection.

[0032] The spiral structure of the cooling tube 30 not only increases the contact area with the oil body and improves the heat exchange efficiency, but also the flow direction of the coolant inside the cooling tube 30 is opposite to the flow direction of the oil body, which also has higher cooling efficiency. In addition, the cooling tube 30 is made of copper, which has better thermal conductivity, and the fins are evenly distributed on the surface, which further improves the heat exchange efficiency. Since the flow rate of the liquid outlet 20 is basically the same, in order to reduce the oil body to different temperatures in the same time, the flow rate of the coolant is controlled by the control valve 60, that is, the greater the difference between the detection value of the temperature sensor 70 at the liquid inlet of the liquid outlet 20 and the set oil outlet temperature value, the greater the flow rate, so as to ensure that the output oil reaches the set temperature, and the oil outlet temperatures of different liquid outlets 20 can be different.

[0033] In order to facilitate the understanding of the technical solution of the present application, the heating component is further explained.

[0034] The heating assembly includes a shell 81, a partition plate 82 is provided in the middle of the inner side of the shell 81, the outer wall of the partition plate 82 and the inner wall of the shell 81 form a confluence cavity 83 with a U-shaped cross-section, a top plate 84 is provided at the top of the partition plate 82, and the top plate 84 and the inner upper part of the shell 81 form a diversion cavity 85, a cavity 86 on the inner side of the partition plate 82 connects the confluence cavity 83 and the diversion cavity 85, and a heater 87 is provided on the bottom surface of the shell 81, and the working part of the heater 87 extends into the confluence cavity 83.

[0035] The heater 87 heats the oil. In order to make the oil heated evenly, a cavity plate 82 and a top plate 84 are set inside the shell 81 to separate the internal space of the shell 81. The outer wall of the cavity plate 82 and the inner wall of the shell 81 form a confluence cavity 83 with a U-shaped cross section. The liquid inlet end 10 is located on the side wall of the shell 81 and communicates with the upper part of the confluence cavity 83, so that the cavity plate 82 with a higher temperature can preheat the oil with a lower temperature in advance, and the oil with a lower temperature will not interfere with the oil with a higher temperature after heating. The heated oil is uniformly transported to the diversion cavity 85. Since the liquid outlet end 20 is located on the top surface of the shell 81 and communicates with the diversion cavity 85, the heated oil is output through the liquid outlet end 20.

[0036] In one embodiment, there are multiple cavities 86 that are evenly arranged, the working portion of the heater 87 is an M-shaped structure, the protrusions 88 on the working portion of the heater 87 are all located in the corresponding cavities 86 , and the top end is located in the cavity 86 .

[0037] In order to improve the heating efficiency and achieve uniform heating of the oil, the working part of the heater 87 is made into an M-shaped structure. The protrusions 88 on the working part of the heater 87 are all located in the corresponding cavity 86. The oil begins to be heated when it reaches the lower part of the confluence cavity 83, and then when it flows into the cavity 86, it is heated by the protrusion 88. Since the cross-section inside the cavity 86 is the same, each protrusion 88 will heat the same amount of oil, which is relatively more uniform.

[0038] In one embodiment, the lower side wall of the cavity plate 82 is connected to the inner wall of the housing 81 through a hollow support plate 89. Under the premise of not hindering the flow, the cavity plate 82 is further supported and fixed, and the overall structural strength of the heating assembly is improved.

[0039] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A multi-temperature mold temperature device for an injection molding machine, characterized in that: include: A heating component for heating an oil body, the heating component having a plurality of liquid inlet ends (10) and liquid outlet ends (20) connected to the interior of the heating component, a cooling pipe (30) with a spiral structure in the middle of the inner side of the liquid outlet end (20), the upper end of the cooling pipe (30) being connected to a liquid supply pipe (40) passing through the liquid outlet end (20), and the lower end being connected to a liquid outlet pipe (50) passing through the liquid outlet end (20), the liquid supply pipe (40) being provided with a control valve (60), and temperature sensors (70) being provided at both ends of the liquid outlet end (20), and the temperature sensor (70) being connected to the control valve (60) for signal communication.

2. A multi-temperature mold temperature device for an injection molding machine according to claim 1, characterized in that: The heating component comprises a shell (81), wherein a cavity partition plate (82) is provided at the middle of the inner side of the shell (81), wherein the outer wall of the cavity partition plate (82) and the inner wall of the shell (81) form a confluence cavity (83) with a U-shaped cross section, wherein a top plate (84) is provided at the top end of the cavity partition plate (82), and the top plate (84) and the inner upper part of the shell (81) form a diversion cavity (85), wherein a cavity (86) on the inner side of the cavity partition plate (82) connects the confluence cavity (83) and the diversion cavity (85), and wherein a heater (87) is provided on the bottom surface of the shell (81), and a working part of the heater (87) extends into the confluence cavity (83).

3. A multi-temperature mold temperature device for an injection molding machine according to claim 2, characterized in that: The liquid inlet end (10) is located on the side wall of the shell (81) and is in communication with the upper part of the confluence chamber (83); the liquid outlet end (20) is located on the top surface of the shell (81) and is in communication with the diversion chamber (85).

4. A multi-temperature mold temperature device for an injection molding machine according to claim 2, characterized in that: There are multiple cavities (86) that are evenly arranged. The working part of the heater (87) is an M-shaped structure. The protrusions (88) on the working part of the heater (87) are all located in the corresponding cavities (86), and the top end is located in the cavity (86).

5. The multi-temperature mold temperature device for an injection molding machine according to claim 2, characterized in that: The side wall at the lower end of the cavity partition plate (82) is connected to the inner wall of the shell (81) via a support plate (89) with a hollow structure.

6. A multi-temperature mold temperature device for an injection molding machine according to claim 1, characterized in that: The cooling tube (30) is made of copper and has fins evenly distributed on its surface.

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