Extruder material temperature detection device

Abstract

The application discloses an extruder material temperature detection device, and belongs to the technical field of extruders. Mainly including screw, the screw is located in the inside of the extruder, the front end of the screw is provided with a sharp angle, the front end of the screw is fixedly connected with two temperature sensors, the rear end of the screw is fixedly connected with a stability column, the outer side of the stability column is fixedly connected with a gear ring, the outer side of the gear ring is engaged with a transmission gear, one end of the transmission gear is fixedly connected with a driving motor. The extruder material temperature detection device reaches the temperature detection is divided into multiple intervals for inspection, when the temperature of a certain interval does not conform to the predetermined value, the heating amount of the heating area can be adjusted in time and correspondingly, the quality effect of the final extruded product is ensured / solved the problem that the inside of the extruder is a full sealing structure, it is difficult to add a temperature measuring device, even if adding outside, it is also difficult to accurately measure the accurate heating temperature of the raw material.

Description

Technical Field

[0001] This application relates to the field of extruder technology, specifically to an extruder material temperature detection device. Background Technology

[0002] Extruders can be classified into right-angle extruders, angled extruders, and screw extruders based on the angle between the material flow direction at the die head and the screw centerline. They are suitable for producing one-piece molded plastic products. Screw extruders rely on the pressure and shearing force generated by the rotation of the screw to fully plasticize and uniformly mix the material, which is then formed through a die.

[0003] During the operation of the extruder, the raw material needs to be heated to a predetermined stable temperature. The heating process is generally completed when the screw is transporting the material. In order to ensure the quality of the finished product, the temperature of the raw material needs to be monitored at all times.

[0004] Existing technologies have also proposed some solutions. For example, a patent application with publication number CN110421818B discloses a plastic extruder with adjustable extrusion barrel temperature. An outer protective cover is fixedly mounted on the surface of the frame, and the extrusion barrel is horizontally mounted inside the outer protective cover. Several cast aluminum heating jackets are fixedly mounted on the arc side of the extrusion barrel to improve the extrusion quality. By switching between hot and cold water inside the temperature control box, the temperature of the plastic raw material inside the extrusion barrel can be adjusted by the cooling pipe inside the extrusion barrel, making the heating and cooling effect of the extrusion barrel more prominent.

[0005] However, the inside of the extruder is a completely sealed structure, making it difficult to add a temperature measuring device. Even if it is added to the outside, it is difficult to accurately measure the heating temperature of the raw material.

[0006] Therefore, it is necessary to provide an extruder material temperature detection device to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is that the inside of the extruder is a fully sealed structure, making it difficult to add a temperature measuring device. Even if it is added to the outside, it is difficult to accurately measure the precise heating temperature of the raw material.

[0009] The technical solution adopted by this application to solve its technical problem is: an extruder material temperature detection device, which includes a screw located inside the extruder, the front of the screw being set at a sharp angle, and includes:

[0010] Two temperature sensors are fixed to the front end of the screw, and the temperature sensors are used to detect the temperature at the front end of the screw.

[0011] Stabilizing column: The stabilizing column is fixed to the rear end of the screw and is used to support the screw.

[0012] Gear ring, the gear ring is fixed to the outside of the stabilizing column near the end of the screw, and is used to transmit power;

[0013] The transmission gear and the drive motor that provides power to the transmission gear; the transmission gear meshes with the outer side of the gear ring.

[0014] Multiple temperature measuring modules are equidistantly distributed on the inner side of the screw to detect the temperature of the outer surface of the screw.

[0015] The conductive assembly transmits power to the temperature sensing module and temperature sensor 1. By adding temperature sensor 1 and temperature sensing module to the screw end and outside respectively, the temperature of the heated raw material around the screw can be effectively measured as it is conveyed by the screw. Since the extruder's heating zone is generally divided into four areas, distributed on the outside of the screw axis and generally equidistant, the positions of multiple temperature sensing modules correspond precisely to the gaps between the heating zones. Through the measurements of multiple temperature sensing modules, the specific temperature change of the raw material after each passage through the heating zone can be determined. Meanwhile, the temperature sensor 1 at the end is used to detect the temperature of the raw material during final extrusion. Through this setting, the temperature detection is divided into multiple zones for inspection. When the temperature in a certain zone does not conform to the predetermined value, the heating amount of the heating zone can be adjusted in a timely manner to ensure the quality of the final extruded product.

[0016] Furthermore, the screw is hollow inside and consists of four separate plates. The temperature measuring module includes multiple temperature sensors II, which are located inside the screw and are equidistantly arranged along the screw's axis. Multiple heat-conducting columns are fixed to the inner wall of the screw, and the bottom of each heat-conducting column is connected to the surface of the temperature sensor II. The screw's structure consists of four separate plates joined together and fixed with bolts. Both temperature sensor I and temperature sensor II are located inside the screw. When replacement or maintenance is required, only one separate plate needs to be opened to replace the internal structure. The heat-conducting columns can transfer the temperature of the screw's outer surface to the temperature sensor II.

[0017] Furthermore, three equidistantly arranged heat-conducting rings are fixed to the bottom of the heat-conducting column. The second temperature sensor passes through the three heat-conducting rings and is slidably connected to them. The heat-conducting rings are fitted around the outside of the second temperature sensor, which not only keeps the second temperature sensor stationary but also transmits temperature. This configuration eliminates the need for the temperature measuring device to move; it passively receives temperature for detection, thus improving its service life. The heat generated by the friction between the heat-conducting rings and the second temperature sensor needs to be subtracted from the calculated value. The screw rotates at a constant speed, and the extra heat generated by rotation needs to be calculated before operation.

[0018] Furthermore, the conductive assembly includes wires and a conductive disk. There are two temperature sensors (first type). A connecting component is provided between the temperature sensors (first type) and the conductive disk. Multiple temperature sensors (second type) are connected to the wires. The front and rear ends of the temperature sensors (second type) are connected through each other. The wires pass through the middle of the temperature sensors (second type). A fixing seat is fixed to the inner side of the stabilizing column near the rear end. Two external locking rods are fixed to the rear end of the fixing seat. The ends of the wires are connected to the fixing seat. Since current needs to be continuously transmitted to the temperature sensors (second type), wires are needed to connect the temperature sensors (first type) and temperature sensors (second type) to the outside. The multiple wires are not interconnected. The wires pass through multiple temperature sensors (second type) and meet at the fixing seat to perform data calculation and transmit data outward. The external locking rods can fix the fixing seat, keeping it suspended and not in contact with the screw.

[0019] Furthermore, a heat-insulating column is provided between adjacent temperature sensors. Both ends of the heat-insulating column are fixedly connected to temperature sensors. The heat-insulating column is sleeved on the outside of the wire. Multiple columns are fixedly connected to the outside of the heat-insulating column, and a support frame is fixedly connected to the outside of the columns. The rear end of the support frame is fixedly connected to the fixed base. The wire is wrapped by the heat-insulating column. Since the screw is hollow, the heat transfer medium is reduced, making it difficult for all the external temperature to be transferred to the wire, thus ensuring the normal working environment of the wire. At the same time, the support frame on the outside of the heat-insulating column is fixedly connected to the conductive plate and connected to the end of the temperature sensor, thereby maintaining the stable state of the temperature sensor in the screw and ensuring the correct contact between the heat-conducting ring and the temperature sensor.

[0020] Furthermore, the connecting assembly includes two metal pillars connected to the temperature sensor. The conductive disk has four conductive grooves on the side near the temperature sensor, and the conductive grooves are connected to corresponding wires. The ends of the metal pillars are slidably connected to the conductive grooves. The temperature sensor located at the head directly contacts the outside world to sense the temperature. They are powered through the two metal pillars. The four conductive grooves on the surface of the conductive disk are paired up, and each pair of conductive grooves is further divided into a live wire and a neutral wire. The two metal pillars also correspond to the live wire and the neutral wire respectively. The power-on function is achieved through the friction between the two metal pillars and the conductive grooves. This arrangement allows the continuously rotating temperature sensor to be powered normally.

[0021] Furthermore, a central disk is fixedly connected to the front end of the screw, and a crossbar is fixedly connected to the front end of the second temperature sensor located at the frontmost end. The front end of the crossbar passes through the central disk and is rotatably connected to the central disk. The front end of the central disk is fixedly connected to the transmission disk. The central disk is used to support the crossbar, giving the entire structure in the screw an additional support point and maintaining the central stability of the internal parts in the screw.

[0022] Furthermore, the interior of the insulation column is hollowed out, the support frame is made of metal, and a wind-cooled radiator is fixed to one end of the fixing seat near the outer locking rod. The heat sink of the wind-cooled radiator is in contact with the fixing seat. In order to further ensure the safe operating temperature of the wires, the wind-cooled radiator can continuously cool the conduction plate. The high temperature of the insulation column can be transferred to the conduction plate through the support frame, thereby ensuring the safe temperature of the insulation column and the internal wires.

[0023] Furthermore, the heat-conducting ring has a spherical cross-section and an inner cavity. The heat-conducting ring is made of an elastic metal material. When the heat-conducting ring continuously rubs against the second temperature sensor, it is prone to wear, eventually leading to a lack of thermal contact. By creating a cavity in the inner ring, the heat-conducting ring has only one deformable metal layer. This metal layer can deform, and when the heat-conducting ring contacts the second temperature sensor, the inner ring is in a semi-concave state. With continuous wear, the metal layer of the inner ring gradually recovers outward, ensuring effective heat transfer.

[0024] Furthermore, the end of the metal column near the conductive disk is spherical. The metal column is made of elastic metal material, and its length is greater than the distance from the temperature sensor to the conductive disk. The spherical shape at the bottom of the metal column makes the bottom smooth, which can reduce frictional resistance. The long and flexible design of the metal column allows it to bend when in contact with the conductive groove, and the bending gradually decreases with wear. This design allows the metal column to remain connected to the conductive groove even after a certain amount of wear.

[0025] The beneficial effects of this application are as follows: The extruder material temperature detection device provided by this application can effectively measure the material temperature around the screw when the heated material is transported by the screw by adding a temperature sensor and a temperature measuring module to the screw end and the outside of the screw respectively. Since the heating area of ​​the extruder is generally divided into four areas, which are distributed on the outside of the screw axis and are generally equidistant, the positions of multiple temperature measuring modules correspond to the gaps between the heating areas. Through the measurement of multiple temperature measuring modules, the specific temperature change of the material after passing through the heating zone can be obtained each time. At the same time, the temperature sensor at the end is used to detect the temperature of the material during the final extrusion. With this setting, the temperature detection is divided into multiple zones for inspection. When the temperature of a certain zone does not meet the predetermined value, the heating amount of the heating zone can be adjusted in time and accordingly to ensure the quality of the final extruded product.

[0026] The screw structure consists of four separate plates that are connected together and then fixed with bolts. Temperature sensor 1 and temperature sensor 2 are both located inside the screw. When replacement or maintenance is required, only one of the separate plates needs to be opened to replace the internal structure. The heat-conducting column can transfer the temperature of the outer surface of the screw to temperature sensor 2.

[0027] By using a heat-conducting ring, which is placed around the outside of temperature sensor two, the temperature sensor two is kept stationary while also transmitting temperature. This design eliminates the need for the temperature measuring device to move; it passively receives temperature data for detection, thus improving its service life.

[0028] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is an overall schematic diagram of an extruder material temperature detection device according to this application;

[0031] Figure 2 This is a schematic diagram of the unfolded screw in this application;

[0032] Figure 3 This is a sectional view of the front end of the screw in this application;

[0033] Figure 4 This is a cross-sectional view of the middle part of the screw in this application;

[0034] Figure 5for Figure 3 Enlarged view of region A in the middle;

[0035] Figure 6 This is a sectional view of the rear part of the screw in this application;

[0036] Figure 7 This is a cross-sectional view of the stabilizing rod in this application;

[0037] Figure 8 This is a cross-sectional view of the heat-conducting ring in this application;

[0038] The following are the labeling elements in the figure:

[0039] 1. Screw; 2. Temperature sensor one; 3. Drive motor; 4. Stabilizing column; 5. Gear ring; 6. Isolation ring; 7. Separating plate; 8. Transmission gear; 9. Central disc; 10. Conductive disc; 11. Heat-conducting column; 12. Support frame; 13. Insulation column; 15. Vertical column; 16. Temperature sensor two; 17. Heat-conducting ring; 18. Crossbar; 19. Conductive groove; 20. Metal column; 21. Fixing base; 22. External locking rod; 23. Wire. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0042] like Figure 1-8 As shown, this application provides an extruder material temperature detection device, which includes a screw 1 located inside the extruder. The front of the screw 1 is set at a sharp angle, and includes:

[0043] Two temperature sensors 2 are fixed to the front end of the screw 1. The temperature sensors 2 are used to detect the temperature at the front end of the screw 1.

[0044] Stabilizing column 4 is fixed to the rear end of screw 1 and is used to support screw 1;

[0045] Gear ring 5 is fixed to the outside of the stabilizing column 4 near the end of the screw 1 and is used to transmit power;

[0046] The transmission gear 8 and the drive motor 3 that provides power to the transmission gear 8; the transmission gear 8 meshes with the outer side of the gear ring 5.

[0047] Multiple temperature measuring modules are equidistantly distributed on the inner side of screw 1 to detect the temperature of the outer surface of screw 1;

[0048] The conductive assembly is used to transmit power to the temperature measurement module and temperature sensor 2.

[0049] During normal operation of the extruder, the raw material needs to be fed into the heating zone of the extruder by the rotation of the screw 1 for heating. After being heated to the predetermined temperature, it continues to be conveyed to the extrusion end by the rotation of the screw 1 to complete the extrusion work. This process is completely sealed. In order to ensure the heating temperature of the raw material, a temperature measuring device needs to be set up. However, the inside of the extruder is a completely sealed structure, making it difficult to add a temperature measuring device. Even if it is added to the outside, it is difficult to accurately measure the accurate heating temperature of the raw material.

[0050] By adding temperature sensor 2 and temperature measuring module to the end and outer side of screw 1 respectively, the temperature of the heated raw material around screw 1 can be effectively measured when it is being transported by screw 1. Since the heating zone of the extruder is generally divided into four areas, which are distributed on the outer side of the screw 1 axis and are generally equidistant, the positions of multiple temperature measuring modules correspond exactly to the gaps between the heating zones. Through the measurement of multiple temperature measuring modules, the specific temperature change of the raw material after passing through the heating zone can be obtained each time. At the same time, temperature sensor 2 at the end is used to detect the temperature of the raw material during final extrusion. With this setting, the temperature detection is divided into multiple zones for inspection. When the temperature of a certain zone does not meet the predetermined value, the heating amount of the heating zone can be adjusted in a timely manner to ensure the quality of the final extruded product.

[0051] The screw 1 is hollow inside and consists of four separate plates 7. The temperature measuring module includes multiple temperature sensors 16. The temperature sensors 16 are located inside the screw 1 and are arranged at equal intervals along the axis of the screw 1. Multiple heat-conducting columns 11 are fixed to the inner wall of the screw 1, and the bottom of the heat-conducting columns 11 is connected to the surface of the temperature sensors 16.

[0052] Both temperature sensor 12 and temperature sensor 26 operate by passing current through them. Their resistance changes under the influence of ambient temperature. As long as the voltage remains constant, the temperature can be calculated by observing the change in current. The screw 1 is constructed by connecting four separate plates 7 together with bolts. Both temperature sensors 12 and 26 are located inside the screw 1. When replacement or maintenance is required, only one separate plate 7 needs to be opened to replace the internal structure. The heat-conducting column 11 can transfer the temperature of the outer surface of the screw 1 to temperature sensor 26.

[0053] Three equally spaced heat-conducting rings 17 are fixed to the bottom of the heat-conducting column 11. Temperature sensor 16 passes through the three heat-conducting rings 17 and is slidably connected to the heat-conducting rings 17.

[0054] The screw 1 needs to rotate continuously throughout the entire working process. During rotation, the drive motor 3 drives the transmission gear 8 to rotate, which in turn drives the gear ring 5 and the screw 1 to rotate. The isolation ring 6 is used to isolate the raw material, preventing the stabilizing column 4 behind it from contacting the raw material. The temperature sensor 16 inside the screw 1 remains stationary. The temperature of the heat-conducting column 11 is first transferred to the heat-conducting ring 17, which is fitted over the outside of the temperature sensor 16. This not only keeps the temperature sensor 16 stationary but also transfers the temperature. This setup eliminates the need for the temperature measuring device to move; it passively receives the temperature for detection, thus improving its service life. The heat generated by the friction between the heat-conducting ring 17 and the temperature sensor 16 needs to be subtracted from the calculated value. Since the screw 1 rotates at a constant speed, the extra heat generated by rotation needs to be calculated before operation.

[0055] The conductive assembly includes a wire 23 and a conductive disk 10. There are two temperature sensors 2. A connecting assembly is provided between the temperature sensors 2 and the conductive disk 10. Multiple temperature sensors 16 are connected to the wire 23. The front and rear ends of the temperature sensors 16 are connected through each other. The wire 23 passes through the middle of the temperature sensors 16. A fixing seat 21 is fixed to the inner side of the stabilizing column 4 near the rear end. Two external locking rods 22 are fixed to the rear end of the fixing seat 21. The end of the wire 23 is connected to the fixing seat 21.

[0056] Since it is necessary to continuously transmit current to temperature sensor 2 16, it is necessary to connect temperature sensor 1 2 and temperature sensor 2 16 to the outside with wires 23. Multiple wires 23 are not interconnected. The wires 23 pass through multiple temperature sensors 2 16 and meet at the mounting base 21 to perform data calculation and transmit data outward. The setting of the external locking rod 22 can fix the mounting base 21, keep the mounting base 21 suspended, and not in contact with the screw 1.

[0057] A heat insulation column 13 is provided between adjacent temperature sensors 1 and 2. Both ends of the heat insulation column 13 are fixed to temperature sensor 2 and 16. The heat insulation column 13 is sleeved on the outside of the wire 23. Multiple columns 15 are fixed to the outside of the heat insulation column 13. A support frame 12 is fixed to the outside of the column 15. The rear end of the support frame 12 is fixed to the fixed base 21.

[0058] The wire 23 is also prone to resistance changes at high temperatures. In order to reduce measurement errors, the wire 23 is wrapped by the heat insulation column 13. Since the screw 1 is hollow, the heat transfer medium is reduced, making it difficult for all the external temperature to be transferred to the wire 23, thus ensuring the normal working environment of the wire 23. At the same time, the support frame 12 on the outside of the heat insulation column 13 is fixed to the conduction disk 10 and connected to the end of the second temperature sensor 16, thereby maintaining the stable state of the second temperature sensor 16 in the screw 1 and ensuring the correct contact between the heat conduction ring 17 and the second temperature sensor 16.

[0059] The connecting assembly includes two metal posts 20 connected to the temperature sensor 2. The conductive disk 10 has four conductive grooves 19 on the side near the temperature sensor 2. The conductive grooves 19 are connected to the corresponding wires 23. The ends of the metal posts 20 are slidably connected to the conductive grooves 19. The temperature sensor 2, located at the head, directly contacts the outside world and senses the temperature. They are powered through the two metal posts 20. The four conductive grooves 19 on the surface of the conductive disk 10 are in pairs. Each pair of conductive grooves 19 is further divided into live wire and neutral wire. The two metal posts 20 also correspond to the live wire and neutral wire respectively. The power-on function is achieved through the friction between the two metal posts 20 and the conductive grooves 19. This setting allows the continuously rotating temperature sensor 2 to be powered normally.

[0060] Inside the screw 1, a central disk 9 is fixedly connected to the front end. The front end of the temperature sensor 16 at the very front end is fixedly connected to a crossbar 18. The front end of the crossbar 18 passes through the central disk 9 and is rotatably connected to the central disk 9. The front end of the central disk 9 is fixedly connected to the transmission disk 10. The central disk 9 is used to support the crossbar 18, giving the entire structure in the screw 1 an additional support point and maintaining the stability of the internal parts in the center of the screw 1.

[0061] The interior of the insulation column 13 is hollowed out. The support frame 12 is made of metal. The end of the fixing base 21 near the outer locking rod 22 is fixed with a heat sink. The heat sink fins of the heat sink are in contact with the fixing base 21. In order to further ensure the safe working temperature of the wire 23, the heat sink can continuously cool the conduction plate 10. The high temperature of the insulation column 13 can be transferred to the conduction plate 10 through the support frame 12, thereby ensuring the safe temperature of the insulation column 13 and the internal wire 23.

[0062] The heat-conducting ring 17 has a spherical cross-section and an inner cavity. The heat-conducting ring 17 is made of elastic metal. When it rubs against the temperature sensor 16, it is prone to wear, eventually leading to a lack of thermal contact. The cavity in the inner ring of the heat-conducting ring 17 ensures that the inner ring consists of only one deformable metal layer. This metal layer can deform, and when the heat-conducting ring 17 contacts the temperature sensor 16, the inner ring is in a semi-concave state. With continuous wear, the metal layer of the inner ring gradually recovers outward, ensuring effective heat transfer.

[0063] The metal post 20 is spherically shaped at one end near the conductive disk 10. The metal post 20 is made of elastic metal material. The length of the metal post 20 is greater than the distance from the temperature sensor 2 to the conductive disk 10. The spherical shape at the bottom of the metal post 20 makes the bottom smooth, which can reduce frictional resistance. The long and flexible design of the metal post 20 allows it to bend when it comes into contact with the conductive groove 19. The bending gradually decreases as it wears down. This design allows the metal post 20 to remain connected to the conductive groove 19 even after a certain amount of wear.

[0064] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A material temperature detection device for an extruder, the material temperature detection device comprising a screw (1) located inside the extruder, the front of the screw (1) being arranged at a sharp angle, characterized in that: include: Two temperature sensors (2) are fixed to the front end of the screw (1). The temperature sensors (2) are used to detect the temperature at the front end of the screw (1). Stabilizing column (4) is fixed to the rear end of screw (1) and is used to support screw (1). Gear ring (5), gear ring (5) is fixed to the outside of the stabilizing column (4) near the end of the screw (1) for transmitting power; The transmission gear (8) and the drive motor (3) that provides power to the transmission gear (8) mesh with the outer side of the gear ring (5); Multiple temperature measuring modules are equidistantly distributed on the inner side of the screw (1) to detect the temperature of the outer surface of the screw (1); The conductive component is used to transmit power to the temperature measurement module and temperature sensor 1 (2); The screw (1) is hollow inside and consists of four separation plates (7). The temperature measuring module includes multiple temperature sensors (16). The temperature sensors (16) are located inside the screw (1) and are arranged at equal intervals along the axis of the screw (1). Multiple heat-conducting columns (11) are fixed to the inner wall of the screw (1). The bottom of the heat-conducting columns (11) is connected to the surface of the temperature sensors (16). The bottom of the heat-conducting column (11) is fixed with three equally spaced heat-conducting rings (17), and the second temperature sensor (16) passes through the three heat-conducting rings (17) and is slidably connected to the heat-conducting rings (17). The conductive assembly includes a wire (23) and a conductive disk (10). There are two temperature sensors (2). A connecting assembly is provided between the temperature sensors (2) and the conductive disk (10). Multiple temperature sensors (16) are connected to the wire (23). The front and rear ends of the temperature sensors (16) are connected in a through manner. The wire (23) passes through the middle of the temperature sensors (16). A fixing seat (21) is fixed to the inner side of the stabilizing column (4) near the rear end. Two external locking rods (22) are fixed to the rear end of the fixing seat (21). The end of the wire (23) is connected to the fixing seat (21). A heat insulation column (13) is provided between adjacent temperature sensors (2). Both ends of the heat insulation column (13) are fixed to temperature sensor (26). The heat insulation column (13) is sleeved on the outside of the wire (23). Multiple columns (15) are fixed to the outside of the heat insulation column (13). A support frame (12) is fixed to the outside of the column (15). The rear end of the support frame (12) is fixed to the fixed seat (21). The connection assembly includes two metal pillars (20) connected to the temperature sensor (2). The conductive disk (10) has four conductive grooves (19) on the side near the temperature sensor (2). The conductive grooves (19) are connected to the corresponding wires (23). The ends of the metal pillars (20) are slidably connected to the conductive grooves (19).

2. The extruder material temperature detection device according to claim 1, characterized in that: The screw (1) has a central disk (9) fixed to its front end. The front end of the temperature sensor (16) at the front end is fixed to a crossbar (18). The front end of the crossbar (18) passes through the central disk (9) and is rotatably connected to the central disk (9). The front end of the central disk (9) is fixed to the conduction disk (10).

3. The extruder material temperature detection device according to claim 2, characterized in that: The interior of the heat insulation column (13) is hollowed out. The support frame (12) is made of metal. The fixed seat (21) is fixed to one end near the outer locking rod (22) with a wind-cooled radiator. The heat sink of the wind-cooled radiator is in contact with the fixed seat (21).

4. The extruder material temperature detection device according to claim 3, characterized in that: The heat-conducting ring (17) has a spherical cross-section, and the inner ring of the heat-conducting ring (17) has a cavity. The heat-conducting ring (17) is made of elastic metal material.

5. The extruder material temperature detection device according to claim 4, characterized in that: The metal column (20) is spherically shaped at one end near the conduction disk (10). The metal column (20) is made of elastic metal material. The length of the metal column (20) is greater than the distance from the temperature sensor (2) to the conduction disk (10).

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