Temperature-controlled extrusion die

Abstract

The utility model discloses a temperature control type extrusion die, specifically relates to the technical field of extrusion die, including the die body, the middle part of die body is embedded with the heat conduction plate, and the wall body middle part of die body is provided with cooling pipe and electric heating tube, and the both sides of the bottom of die body are connected with liquid inlet pipe and liquid outlet pipe, and one side of the bottom of die body is connected with the connecting wire. The utility model first is used for real -time monitoring the temperature of heat conduction plate different positions through the first temperature sensor and the second temperature sensor of setting, thereby real -time monitoring the temperature of material inside die body, is used for reducing die temperature through the cooling pipe of setting, and when die temperature is too high, cooling liquid circulates in the cooling pipe and flows, and takes away the redundant heat, is used for raising die temperature through the electric heating tube of setting, and when die temperature is too low, and the electric heating tube is powered on and generates heat, and provides the heat for the die, and through the synergies of cooling pipe and electric heating tube, can accurate control the temperature of die.

Description

Technical Field

[0001] This utility model relates to the field of extrusion die technology, and more specifically, to a temperature-controlled extrusion die. Background Technology

[0002] In industrial production, extrusion molding is an important processing technology widely used in many fields such as plastics, rubber, and food. As the core component of extrusion molding equipment, the performance of the extrusion die directly determines the quality of the extruded products, production efficiency, and production cost. However, existing extrusion dies have many problems in temperature control, which seriously restricts the improvement of product quality and production efficiency.

[0003] Traditional extrusion dies typically use a single heating or cooling method to regulate temperature. When the ambient temperature or the initial material temperature is low, the die temperature can be raised to a certain level. However, during the material extrusion process, due to the continuous flow of the material and the transfer of heat, the die temperature is prone to fluctuation. Moreover, when the ambient temperature or the material temperature is high, a single heating device cannot effectively reduce the die temperature, resulting in excessively high die temperature. This causes the material to be over-plasticized, leading to problems such as extrusion deformation and surface roughness, which seriously affect the appearance and dimensional accuracy of the product. Therefore, a temperature-controlled extrusion die is proposed. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a temperature-controlled extrusion die to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temperature-controlled extrusion die, comprising a die body, which is the core component of the entire device, providing the mounting base for other components and the channel for material extrusion. A heat-conducting plate is embedded in the middle of the die body. This heat-conducting plate has excellent thermal conductivity, enabling it to evenly transfer the cold or heat generated by the cooling pipe and heating pipe to all parts of the die body, ensuring uniform temperature distribution inside the die and avoiding localized overheating or underheating, thereby improving the molding quality of the extruded material. Cooling pipes and heating pipes are arranged in the middle of the die body wall. The cooling pipes are used to lower the die temperature; when the die temperature is too high, coolant circulates in the cooling pipes to remove excess heat. The heating pipes are used to raise the die temperature; when the die temperature is too low, the heating pipes are energized to generate heat for the die. The temperature of the mold head can be precisely controlled through the synergistic effect of the cooling pipe and the heating pipe. The bottom of the mold head body is connected to an inlet pipe and an outlet pipe on both sides. Coolant enters the cooling pipe through the inlet pipe, absorbs heat from the mold head, and flows out through the outlet pipe. After being cooled by a coolant heat exchanger, it is recycled. A connecting wire is connected to one side of the bottom of the mold head body. A first temperature sensor and a second temperature sensor are installed on both sides of the top of the heat-conducting plate. These sensors are used to monitor the temperature at different locations on the heat-conducting plate in real time and transmit the temperature signals to an external control system via the connecting wire. The external control system compares the received temperature signals with preset temperature values ​​to determine whether the coolant flow rate of the cooling pipe or the heating power of the heating pipe needs to be adjusted, thereby achieving precise control of the mold head temperature.

[0006] A connecting ring is fixedly connected to one end of the die head body. The connecting ring provides a basic structure for the connection between the die head and the extruder, serving as a transition and connection. A rotating screw head is provided on one side of the connecting ring, and a threaded tube is fixedly connected to one side of the rotating screw head. A limit ring is fixedly connected to the other side of the rotating screw head. Multiple fastening bolts are evenly inserted around the connecting ring on the side away from the rotating screw head. The threaded tube is adapted to the output end of the extruder. The die head and the extruder are tightly connected together by a threaded connection. This connection method has good sealing and stability, and can prevent material leakage. By tightening the fastening bolts, the limit ring can be further fixed, enhancing the stability of the connection between the die head and the extruder, and preventing the connection from loosening due to vibration or other reasons during the extrusion process.

[0007] Preferably, one end of both the first and second temperature sensors is connected to an external power source via connecting wires, and one end of the inlet pipe and outlet pipe are respectively connected to both ends of the cooling pipe. The connecting wires provide the power required for the temperature sensors to operate and transmit the temperature signal to the external control system.

[0008] Preferably, the inlet pipe is connected to the coolant delivery pipe via a valve, and the outlet pipe is connected to the coolant heat exchanger via a valve. The coolant enters the cooling pipe from the inlet pipe, absorbs heat from the die head, and then flows out from the outlet pipe. After being cooled by the coolant heat exchanger, it is recycled. By adjusting the valve opening, the coolant flow rate can be controlled, thereby adjusting the cooling rate of the die head.

[0009] Preferably, the cooling pipe and the heating pipe are staggered, both located outside the heat-conducting plate and in contact with the wall of the heat-conducting plate. Through the synergistic effect of the cooling pipe and the heating pipe, the temperature of the mold head can be precisely controlled.

[0010] Preferably, the threaded tube is adapted to the output end of the extruder, and the inner cavity of the threaded tube is connected to the inner cavity of the die body through the middle of the limiting ring.

[0011] Preferably, the limiting ring has a "T" shaped cross-section and is embedded in the middle of the connecting ring.

[0012] Preferably, one end of the fastening bolt corresponds to the wall of the limiting ring, and one end of the limiting ring is in contact with one side wall of the limiting ring. The die head body is conveniently connected to the extruder through the threaded tube, and the threaded tube can be rotated by rotating the screw head, so that the limiting ring can rotate inside the connecting ring. This makes it easy to keep the die head body stationary during connection, which is convenient for connection and use. By rotating the fastening bolt to compress and fix the limiting ring, the die head body can be fixed, and the threaded tube can be relatively fixed to the die head body, thereby improving the extrusion effect.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model first uses a first temperature sensor and a second temperature sensor to monitor the temperature of different positions on the heat-conducting plate in real time, thereby monitoring the temperature of the material inside the die head body in real time. A cooling pipe is used to reduce the temperature of the die head. When the temperature of the die head is too high, the coolant circulates in the cooling pipe to remove excess heat. An electric heating pipe is used to raise the temperature of the die head. When the temperature of the die head is too low, the electric heating pipe is energized and heats up to provide heat to the die head. Through the synergistic effect of the cooling pipe and the electric heating pipe, the temperature of the die head can be precisely controlled.

[0015] 2. This utility model also features an inlet pipe and an outlet pipe, allowing coolant to enter the cooling pipe from the inlet pipe, absorb heat from the die head, and then flow out from the outlet pipe. After being cooled by the coolant heat exchanger, it is recycled. By adjusting the valve opening, the flow rate of the coolant can be controlled, thereby adjusting the cooling speed of the die head. This allows for precise control of the die head temperature. The threaded pipe is compatible with the output end of the extruder, and the die head is tightly connected to the extruder via a threaded connection. The threaded pipe facilitates the connection between the die head body and the extruder, and the limiting ring helps to keep the die head body stationary during connection. By rotating the fastening bolt to squeeze and fix the limiting ring, the die head body can be fixed, making the threaded pipe and the die head body relatively fixed, thus improving the extrusion effect.

[0016] In summary, through the interaction of the above-mentioned multiple functions, it is possible to facilitate cooling and heating, precisely control the temperature of the mold head, and facilitate connection and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from another angle.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the mold head body of this utility model.

[0021] The attached diagram is labeled as follows: 1. Die head body; 2. Heat-conducting plate; 3. Cooling pipe; 4. Heating pipe; 5. First temperature sensor; 6. Second temperature sensor; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Connecting wire; 10. Connecting ring; 11. Rotating screw head; 12. Threaded pipe; 13. Limiting ring; 14. Fastening bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1-3The temperature-controlled extrusion die shown includes a die body 1, which is the core component of the entire device, providing the mounting base for other components and the channel for material extrusion. A heat-conducting plate 2 is embedded in the middle of the die body 1. The heat-conducting plate 2 has good thermal conductivity and can evenly transfer the cold or heat generated by the cooling pipe 3 and the electric heating pipe 4 to all parts of the die body 1, ensuring uniform temperature distribution inside the die and avoiding local overheating or underheating, thereby improving the molding quality of the extruded material. The wall of the die body 1 is provided with a cooling pipe 3 and an electric heating pipe 4. The cooling pipe 3 is used to reduce the die temperature. When the die temperature is too high, the coolant circulates in the cooling pipe 3 to carry away excess heat. The electric heating pipe 4 is used to increase the die temperature. When the die temperature is too low, the electric heating pipe 4 is energized to generate heat for the die. The temperature of the mold head can be precisely controlled through the synergistic effect of cooling pipe 3 and heating pipe 4. Inlet pipe 7 and outlet pipe 8 are connected to both sides of the bottom of the mold head body 1. Coolant enters the cooling pipe 3 through inlet pipe 7, absorbs heat from the mold head, and flows out through outlet pipe 8. After being cooled by a coolant heat exchanger, it is recycled. A connecting wire 9 is connected to one side of the bottom of the mold head body 1. A first temperature sensor 5 and a second temperature sensor 6 are installed on both sides of the top of the heat-conducting plate 2. The first temperature sensor 5 and the second temperature sensor 6 are used to monitor the temperature at different locations on the heat-conducting plate 2 in real time, and the temperature signal is transmitted to the external control system through the connecting wire 9. The external control system compares the received temperature signal with the preset temperature value to determine whether it is necessary to adjust the coolant flow rate of the cooling pipe 3 or the heating power of the heating pipe 4, thereby achieving precise control of the mold head temperature.

[0024] A connecting ring 10 is fixedly connected to one end of the die head body 1. The connecting ring 10 provides a basic structure for the connection between the die head and the extruder, and plays a transition and connection role. A rotating screw head 11 is provided on one side of the connecting ring 10. A threaded tube 12 is fixedly connected to one side of the rotating screw head 11. A limiting ring 13 is fixedly connected to the other side of the rotating screw head 11. Multiple fastening bolts 14 are evenly inserted around the side of the connecting ring 10 away from the rotating screw head 11. The threaded tube 12 is adapted to the output end of the extruder. The die head and the extruder are tightly connected together by the threaded connection. This connection method has good sealing and stability and can prevent material leakage. By tightening the fastening bolts 14, the limiting ring 13 can be further fixed, which enhances the stability of the connection between the die head and the extruder and prevents the connection from loosening due to vibration or other reasons during the extrusion process.

[0025] As attached Figure 3 , 4As shown, one end of the first temperature sensor 5 and the second temperature sensor 6 are both connected to an external power source via connecting wires 9. One end of the inlet pipe 7 and the outlet pipe 8 are respectively connected to both ends of the cooling pipe 3. The inlet pipe 7 is connected to the coolant delivery pipe via a valve, and the outlet pipe 8 is connected to the coolant heat exchanger via a valve. The cooling pipe 3 and the heating element 4 are staggered and located outside the heat-conducting plate 2, in close contact with the wall of the heat-conducting plate 2. The connecting wires 9 provide the necessary power for the temperature sensors to operate and transmit the temperature signal to the external control system. The coolant enters the cooling pipe 3 from the inlet pipe 7, absorbs heat from the mold head, and flows out from the outlet pipe 8. After being cooled by the coolant heat exchanger, it is recycled. By adjusting the valve opening, the flow rate of the coolant can be controlled, thereby adjusting the cooling rate of the mold head. Through the synergistic effect of the cooling pipe 3 and the heating element 4, the temperature of the mold head can be precisely controlled.

[0026] As attached Figure 1-4 As shown, the threaded tube 12 is adapted to the output end of the extruder. The inner cavity of the threaded tube 12 is connected to the inner cavity of the die body 1 through the middle of the limiting ring 13. The cross-sectional shape of the limiting ring 13 is set as "T". The limiting ring 13 is embedded in the middle of the connecting ring 10. One end of the fastening bolt 14 corresponds to the wall of the limiting ring 13. One end of the limiting ring 13 is in contact with one side wall of the limiting ring 13. The threaded tube 12 facilitates the connection between the die body 1 and the extruder. By rotating the screw head 11, the threaded tube 12 can be rotated, so that the limiting ring 13 can rotate inside the connecting ring 10. This makes it easy to keep the die body 1 stationary during connection, which is convenient for connection and use. By rotating the fastening bolt 14 to squeeze and fix the limiting ring 13, the die body 1 can be fixed, and the threaded tube 12 and the die body 1 can be fixed relative to each other, improving the extrusion effect.

[0027] The working principle of this utility model is as follows: Before use, the die head body 1 is connected to the output end of the extruder through the threaded tube 12. The screw head 11 is rotated so that the threaded tube 12 is gradually screwed into the output end of the extruder. Then, the fastening bolt 14 is rotated to fix the limiting ring 13, which can fix the die head body 1 relative to the rotating screw head 11.

[0028] Connect the inlet pipe 7 to the coolant delivery pipe through a valve, connect the outlet pipe 8 to the coolant heat exchanger through a valve, and connect the connecting wire 9 to the external power supply and control system to ensure that the first temperature sensor 5 and the second temperature sensor 6 can work normally and transmit temperature signals, and can provide power to the heating element 4.

[0029] When in use, the material enters the die head body 1 from the output end of the extruder when the extruder is started. The first temperature sensor 5 and the second temperature sensor 6 monitor the temperature of the heat-conducting plate 2 in real time to detect the material temperature.

[0030] The external control system compares the received temperature signal with the preset temperature value. If the temperature is too high, the control system adjusts the valve opening on the inlet pipe 7 and the outlet pipe 8 to increase the flow rate of coolant, which carries away excess heat through the cooling pipe 3. If the temperature is too low, the control system increases the heating power of the heating element 4 to raise the die temperature. During the extrusion process, the system continuously monitors the temperature and dynamically adjusts the working status of the cooling pipe 3 and the heating element 4 according to the actual situation to ensure that the die temperature remains stable within the set range.

[0031] 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. A temperature-controlled extrusion die, comprising a die body (1), characterized in that: A heat-conducting plate (2) is embedded in the middle of the mold body (1). A cooling pipe (3) and an electric heating pipe (4) are provided in the middle of the wall of the mold body (1). An inlet pipe (7) and an outlet pipe (8) are connected to the bottom two sides of the mold body (1). A connecting wire (9) is connected to the bottom one side of the mold body (1). A first temperature sensor (5) and a second temperature sensor (6) are provided on the top two sides of the heat-conducting plate (2). One end of the mold head body (1) is fixedly connected to a connecting ring (10), a rotating screw head (11) is provided on one side of the connecting ring (10), a threaded tube (12) is fixedly connected to one side of the rotating screw head (11), a limit ring (13) is fixedly connected to the other side of the rotating screw head (11), and multiple fastening bolts (14) are evenly inserted around the side of the connecting ring (10) away from the rotating screw head (11).

2. The temperature-controlled extrusion die according to claim 1, characterized in that: One end of the first temperature sensor (5) and the second temperature sensor (6) are connected to an external power source via connecting wires (9), and one end of the liquid inlet pipe (7) and the liquid outlet pipe (8) are respectively connected to both ends of the cooling pipe (3).

3. The temperature-controlled extrusion die according to claim 1, characterized in that: The inlet pipe (7) is connected to the coolant delivery pipe through a valve, and the outlet pipe (8) is connected to the coolant heat exchanger through a valve.

4. The temperature-controlled extrusion die according to claim 1, characterized in that: The cooling pipe (3) and the heating pipe (4) are staggered, and both the cooling pipe (3) and the heating pipe (4) are located outside the heat-conducting plate (2). Both the cooling pipe (3) and the heating pipe (4) are in contact with the wall of the heat-conducting plate (2).

5. The temperature-controlled extrusion die according to claim 1, characterized in that: The threaded tube (12) is adapted to the output end of the extruder, and the inner cavity of the threaded tube (12) is connected to the inner cavity of the die body (1) through the middle of the limiting ring (13).

6. The temperature-controlled extrusion die according to claim 1, characterized in that: The cross-sectional shape of the limiting ring (13) is set to "T" shape, and the limiting ring (13) is embedded in the middle of the connecting ring (10).

7. The temperature-controlled extrusion die according to claim 1, characterized in that: One end of the fastening bolt (14) corresponds to the wall of the limiting ring (13), and one end of the limiting ring (13) is in contact with one side wall of the limiting ring (13).

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