Melt conveying optimizing device of automobile lampshade injection molding machine

Abstract

The utility model discloses a melt conveying optimizing device of an automobile lampshade injection molding machine. The melt conveying optimizing device comprises a melt heating area, a melt conveying pipeline, a double-screw conveying system, a pressure adjusting device, a melt backflow system and an automatic cleaning system. The melt temperature is accurately adjusted in the melt heating area through an electric heater and a temperature sensor, and the heating uniformity is ensured. The double-screw conveying system adopts a reverse or synchronous rotation mode, and a built-in cooling channel can effectively reduce the temperature of the screws and reduce abrasion. The melt backflow system enables excess melt to flow back to the heating area through a backflow pipeline, the backflow rate of the melt is adjusted through a backflow valve, and it is guaranteed that the flow of the melt is stable. The automatic cleaning system removes residues in the melt pipeline through a cleaning pump and a spray head, and equipment is kept clean. The device is made of a high-temperature-resistant material such as nickel-based alloy or molybdenum alloy, so that the durability and the stability of the device are improved.

Description

Technical Field

[0001] This utility model relates to an optimized device for melt delivery in automotive lamp cover injection molding machines. Background Technology

[0002] With the continuous development of the automotive industry, the production process of automotive lamp covers is gradually becoming more automated and refined, with injection molding technology playing a crucial role. During injection molding, the delivery and heating of the melt directly affects product quality and production efficiency. Traditional automotive lamp cover injection molding machines often suffer from problems such as uneven melt temperature, large fluctuations in delivery pressure, severe screw wear, and melt residue. These problems not only reduce production efficiency but also increase equipment maintenance costs, affecting production stability and product molding accuracy. Therefore, optimizing the melt delivery process, improving melt heating uniformity and delivery stability, and reducing equipment failure rates and maintenance needs have become urgent technical challenges in the field of automotive lamp cover injection molding machines.

[0003] While some melt heating and conveying devices have been proposed in the existing technology, they still face several problems: First, inaccurate temperature control in the melt heating zone leads to uneven melt heating, which in turn affects the quality of the final product. Second, unreasonable material selection and structural design of the melt conveying pipeline easily lead to heat loss, corrosion, and wear at high temperatures. Finally, traditional melt conveying systems lack effective reflux and cleaning mechanisms, resulting in melt residue and affecting equipment cleanliness and production efficiency. Therefore, there is an urgent need for a new type of optimized melt conveying device to improve temperature control accuracy, conveying stability, and equipment durability during the melt conveying process. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the existing technology and provide an optimized melt delivery device for automotive lamp cover injection molding machines.

[0005] An optimized melt delivery device for an automotive headlight cover injection molding machine includes a melt heating zone, a melt delivery pipeline, a twin-screw conveying system, a pressure regulating device, a melt recirculation system, and an automatic cleaning system. The melt heating zone includes an electric heater, a heating plate, and a temperature sensor. The electric heater heats the melt by applying current to the heating plate. The temperature sensor monitors the melt temperature in real time and feeds the temperature signal back to the control system, which adjusts the heater power based on the temperature signal. The twin-screw conveying system includes two parallel screws connected to a servo motor. The two screws operate in opposite or synchronous rotation. Cooling channels are provided inside the screws, through which cooling medium circulates to reduce the screw surface temperature. The melt recirculation system includes a melt recirculation pipeline connected to the melt heating zone to return excess or incompletely used melt. A recirculation valve is installed on the melt recirculation pipeline to regulate the melt recirculation rate. The automatic cleaning system includes a cleaning pump, a cleaning liquid channel, and cleaning nozzles. Cleaning liquid is sprayed into the melt delivery pipeline through the cleaning nozzles to remove residues from the melt pipeline.

[0006] As a further improvement, the control system includes a microprocessor, an embedded operating system, input and output interfaces, and storage devices.

[0007] As a further improvement, the material of the melt conveying pipe is a nickel-based alloy or a molybdenum alloy, and the joint of the melt conveying pipe is provided with a high-temperature resistant sealing ring, which is made of silicone rubber, fluororubber or polytetrafluoroethylene.

[0008] As a further improvement, the pressure regulating device includes a pressure sensor installed in the melt delivery pipeline, the pressure sensor being connected to the control system, and the control system being connected to the servo motor.

[0009] As a further improvement, the temperature adjustment range of the melt heating zone is 180℃-250℃.

[0010] As a further improvement, the screw surface is electroplated with a layer of hard chrome.

[0011] Beneficial effects:

[0012] Improved melt temperature control accuracy: The temperature control system in the melt heating zone monitors the melt temperature in real time through temperature sensors and adjusts the power of the electric heater based on feedback signals to achieve precise temperature control, avoid melt temperature fluctuations, and thus ensure temperature uniformity and stability during the injection molding process, thereby improving the molding quality of the product.

[0013] Optimizing melt delivery stability: The twin-screw conveyor system employs reverse or synchronous rotation, combined with built-in cooling channels, to effectively reduce screw surface temperature, minimize screw wear, and extend screw life. Simultaneously, the melt recirculation system effectively regulates melt flow, ensuring stable melt delivery and preventing excess melt from impacting the production process.

[0014] Enhanced equipment durability and cleanliness: The melt delivery pipeline is made of nickel-based alloy or molybdenum alloy materials, which are resistant to high temperatures and corrosion, enabling it to withstand the challenges of long-term high-temperature working environments and extending the equipment's service life. High-temperature resistant sealing rings effectively prevent melt leakage, further improving the equipment's sealing performance and stability. In addition, the automatic cleaning system is designed to periodically clean the melt pipeline, reducing melt residue and improving equipment production efficiency and ease of maintenance.

[0015] Reduced energy consumption and environmental pollution: This device avoids overheating or undercooling of the melt through precise temperature control and efficient heat recovery, thus improving energy utilization efficiency. Simultaneously, the melt recirculation system reduces waste of unused melt, lowering material consumption during production and meeting energy conservation and environmental protection requirements.

[0016] In summary, the melt conveying optimization device for automotive lamp cover injection molding machines of this utility model has significant technical advantages, which can effectively improve production efficiency, reduce equipment failure rate, and reduce energy waste, providing a strong guarantee for efficient and stable production in the injection molding industry. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the melt delivery optimization device for an automotive lamp cover injection molding machine;

[0018] 1. Melt heating zone 11. Electric heater 12. Heating plate 13. Temperature sensor 2. Melt conveying pipe 3. Twin screw conveying system 31. Screw 32. Servo motor 33. Cooling channel 4. Melt reflux system 41. Melt reflux pipe 42. Reflux valve 5. Automatic cleaning system 51. Cleaning pump 52. Cleaning nozzle. Detailed Implementation

[0019] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0020] like Figure 1As shown, the automotive lamp cover injection molding machine melt delivery optimization device includes a melt heating zone 1, an electric heater 11, a heating plate 12, a temperature sensor 13, a melt delivery pipe 2, a twin-screw conveying system 3, a screw 31, a servo motor 32, a cooling channel 33, a melt reflux system 4, a melt reflux pipe 41, a reflux valve 42, an automatic cleaning system 5, a cleaning pump 51, and a cleaning nozzle 52.

[0021] An optimized melt delivery device for an automotive headlight cover injection molding machine includes a melt heating zone 1, a melt delivery pipe 2, a twin-screw conveying system 3, a pressure regulating device, a melt return system 4, and an automatic cleaning system 5. The melt heating zone 1 includes an electric heater 11, a heating plate 12, and a temperature sensor 13. The electric heater 11 heats the heating plate 12 via current, thereby heating the melt. The temperature sensor 13 monitors the melt temperature in real time and feeds the temperature signal back to the control system. The control system includes a microprocessor, an embedded operating system, input and output interfaces, and a storage device. The control system adjusts the heater power according to the temperature signal. The temperature regulation range of the melt heating zone 1 is 180℃-250℃. The melt delivery pipe 2 is made of nickel-based alloy or molybdenum alloy. A high-temperature resistant sealing ring is provided at the joint of the melt delivery pipe 2. The high-temperature resistant sealing ring is made of silicone rubber, fluororubber, or polytetrafluoroethylene. The twin-screw conveying system 3 includes... Two screws 31 are arranged side by side. The surface of each screw 31 is electroplated with a layer of hard chrome. Each screw 31 is connected to a servo motor 32. The two screws 31 operate by rotating in opposite directions or synchronously. Each screw 31 has a cooling channel 33 inside. The cooling medium circulates through the cooling channel 33 to reduce the surface temperature of the screw 31. The pressure regulating device includes a pressure sensor installed in the melt delivery pipe 2. The pressure sensor is connected to the control system, which is connected to the servo motor 32. The melt return system 4 includes a melt return pipe 41, which is connected to the melt heating zone 1 to return excess or incompletely used melt. The melt return pipe 41 is equipped with a return valve 42, which is used to regulate the melt return rate. The automatic cleaning system 5 includes a cleaning pump 51, a cleaning liquid channel, and a cleaning nozzle 52. The cleaning liquid is sprayed into the melt delivery pipe 2 through the cleaning nozzle 52 to remove residues in the melt pipe.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optimized melt delivery device for an automotive lamp cover injection molding machine, characterized in that, The system includes a melt heating zone, a melt conveying pipeline, a twin-screw conveying system, a pressure regulating device, a melt reflux system, and an automatic cleaning system. The melt heating zone comprises an electric heater, a heating plate, and a temperature sensor. The electric heater heats the melt by applying current to the heating plate. The temperature sensor monitors the melt temperature in real time and feeds the temperature signal back to the control system, which adjusts the heater power based on the temperature signal. The twin-screw conveying system includes two parallel screws connected to a servo motor. The two screws operate in opposite or synchronous rotation. Cooling channels are provided inside the screws, through which a cooling medium circulates to reduce the screw surface temperature. The melt reflux system includes a melt reflux pipeline connected to the melt heating zone, which returns excess or incompletely used melt. A reflux valve is installed on the melt reflux pipeline to regulate the melt reflux rate. The automatic cleaning system includes a cleaning pump, a cleaning liquid channel, and cleaning nozzles. Cleaning liquid is sprayed into the melt conveying pipeline through the cleaning nozzles to remove residues from the melt pipeline.

2. The optimized melt conveying device for automotive lamp cover injection molding machine according to claim 1, characterized in that, The control system includes a microprocessor, an embedded operating system, input and output interfaces, and storage devices.

3. The automotive lamp cover injection molding machine melt conveying optimization device according to claim 1, characterized in that, The melt conveying pipeline is made of nickel-based alloy or molybdenum alloy, and the joint of the melt conveying pipeline is equipped with a high-temperature resistant sealing ring, which is made of silicone rubber, fluororubber or polytetrafluoroethylene.

4. The optimized melt conveying device for automotive lamp cover injection molding machine according to claim 1, characterized in that, The pressure regulating device includes a pressure sensor installed in the melt conveying pipeline. The pressure sensor is connected to the control system, and the control system is connected to the servo motor.

5. The optimized melt conveying device for automotive lamp cover injection molding machine according to claim 1, characterized in that, The temperature adjustment range of the melt heating zone is 180℃-250℃.

6. The optimized melt conveying device for automotive lamp cover injection molding machine according to claim 1, characterized in that, The screw surface is electroplated with a layer of hard chrome.

Images