Fireproof door hot-pressing device

Abstract

The utility model is suitable for the technical field of fireproof door hot pressing, and provides a fireproof door hot pressing device which comprises supporting frames, a conveying belt arranged between the supporting frames and a fixing frame arranged on the supporting frames. A group of hydraulic cylinders are symmetrically arranged on the fixing frame; the tail ends of piston rods of the two hydraulic cylinders are connected with the same hot pressing plate, a set of lead screw sliding tables are symmetrically arranged on the top side of the fixing frame, and the movable ends of the two lead screw sliding tables are connected with the same assembly frame. The same pressing roller is rotationally matched between the assembly frames; according to the device, real-time monitoring and uniform control of the temperature in the hot-pressing process are realized through the sectional structure and the infrared temperature measurement channels between the adjacent sections, and the accuracy and the stability of hot-pressing operation are ensured, so that the product quality is ensured; and meanwhile, due to the synergistic effect of the pressing roller and the hot pressing plate, the problem of uneven pressing of a single hot pressing plate is avoided, and the hot pressing stability and the product quality are further improved.

Description

Technical Field

[0001] This utility model belongs to the field of fire door hot pressing technology, and in particular relates to a fire door hot pressing device. Background Technology

[0002] With the increasing demands for fire safety in modern buildings, fire doors, as important fire-resistant isolation facilities, face increasingly stringent quality and performance requirements. Traditional fire door hot-pressing devices suffer from the following problems during the manufacturing process:

[0003] First, existing hot pressing devices often struggle to achieve temperature uniformity and stability during the hot pressing process. Due to the large area of ​​the hot pressing plate and the lack of an effective temperature monitoring and adjustment mechanism, the temperature distribution is uneven during the hot pressing process, affecting the hot pressing effect and final quality of the fire door material.

[0004] Secondly, existing hot pressing devices also have shortcomings in terms of uniform force distribution. Because a single hot pressing plate cannot guarantee uniform force distribution on the material during the pressing process, fire door materials may deform or warp after hot pressing. Utility Model Content

[0005] This utility model provides a fire door hot pressing device, which aims to solve the problems of insufficient temperature uniformity and stress uniformity of existing hot pressing devices.

[0006] This utility model is implemented as follows: a fire door hot pressing device includes a support frame and a conveyor belt disposed between the support frames, which extends in the same direction as the length of the support frame.

[0007] The conveyor belt surface is provided with a wear-resistant and anti-slip layer, and a pressure distribution sensor is provided on the surface of the wear-resistant and anti-slip layer.

[0008] A fixed frame mounted on a support frame;

[0009] A set of hydraulic cylinders are symmetrically arranged on the fixed frame;

[0010] The piston rods of the two hydraulic cylinders are connected to the same hot plate, and heating wires and thermocouples are installed inside the hot plate.

[0011] A set of screw slides is symmetrically arranged on the top side of the fixed frame, which is consistent with the length extension direction of the support frame;

[0012] Each of the two lead screw slides is connected to an electric push rod at its moving end.

[0013] The piston rods of the two electric push rods are connected to the same mounting bracket at their ends;

[0014] The assembly frames are rotated and fitted with the same pressure roller;

[0015] A servo motor is installed on the side wall of the assembly frame, and the output end of the servo motor is fixedly connected to the end of the pressing roller through a flexible coupling.

[0016] Preferably, a set of receiving plates are symmetrically distributed on both sides of the hot press plate. The receiving plates are connected to the hot press plate by countersunk bolts. A set of guide rods are distributed parallel to each other in the vertical direction on the fixing frame. The two receiving plates are slidably engaged with the corresponding guide rods by linear bearings.

[0017] Preferably, a limiting block is provided at the top of the guide rod, and the limiting block is fixed to the guide rod by welding. A pressure sensor is integrated inside the limiting block.

[0018] Preferably, the guide rod is a hollow structure with fiber optic strain sensors embedded inside, and the fiber optic strain sensors are evenly distributed along the height extension direction of the guide rod.

[0019] Preferably, an electromagnetic clutch is provided between the servo motor and the pressing roller.

[0020] Preferably, the pressing roller is made of segmented high-temperature resistant alloy, and an infrared temperature measurement channel is provided between adjacent segments.

[0021] Preferably, the segmented high-temperature resistant alloy surface is coated with a nano-ceramic heat-insulating coating.

[0022] Preferably, a laser alignment sensor is provided on the side wall of the receiving plate, and a PLC control box is provided on the outside of the fixing frame.

[0023] Compared with the prior art, the embodiments of this application have the following main advantages:

[0024] Firstly, the pressing rollers of this device adopt a segmented design, with infrared temperature measurement channels set between adjacent segments. This allows for real-time monitoring of the temperature distribution on the surface of the pressing rollers, ensuring the uniformity and stability of temperature during hot pressing. Through infrared temperature measurement technology, temperature data can be acquired in real time and adjusted as needed, thus ensuring precise control of the hot pressing process. In addition, the synergistic effect of the pressing rollers and the hot pressing plate ensures that the fire door material is subjected to uniform stress during hot pressing, avoiding the problem of uneven pressing by a single hot pressing plate. These characteristics together improve the accuracy and stability of the hot pressing operation, ensuring product quality.

[0025] Secondly, the nano-ceramic heat-insulating coating on the surface of the pressing roller effectively isolates the transfer of high-temperature heat to the inside of the pressing roller, reducing heat loss and thus improving hot pressing efficiency. At the same time, the wear resistance of the nano-ceramic coating also greatly extends the service life of the pressing roller and reduces surface wear caused by long-term high-temperature operation. The segmented design makes the pressing roller more flexible in manufacturing and maintenance. Each segment can be processed, assembled and replaced independently. This not only reduces manufacturing difficulty and cost, but also allows local wear or damage that occurs during hot pressing to be quickly repaired, thereby further extending the overall service life of the pressing roller. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 3 This is a front structural diagram of the present invention;

[0029] Figure 4 This is a side view of the structure of this utility model;

[0030] Figure 5 This is a front sectional view of the structure of this utility model;

[0031] In the diagram: 1. Support frame; 2. Conveyor belt; 3. Pressure distribution sensor; 4. Fixing frame; 5. Hydraulic cylinder; 6. Hot press plate; 7. Heating wire; 8. Thermocouple; 9. Screw slide; 10. Assembly frame; 11. Pressing roller; 12. Servo motor; 13. Receiving plate; 14. Guide rod; 15. Linear bearing; 16. Limit stop; 17. Fiber optic strain sensor; 18. Electromagnetic clutch; 19. Infrared temperature measurement channel; 20. Laser alignment sensor; 21. Electric push rod; 22. PLC control box. Detailed Implementation

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] This utility model embodiment provides a fire door heat-pressing device, such as... Figure 1-5 As shown, it includes a support frame 1 and a conveyor belt 2 disposed between the support frames 1, which extends in the same direction as the length of the support frame 1;

[0035] The surface of the conveyor belt 2 is provided with a wear-resistant and anti-slip layer, and a pressure distribution sensor 3 is provided on the surface of the wear-resistant and anti-slip layer;

[0036] The fixing frame 4 is installed on the support frame 1;

[0037] A set of hydraulic cylinders 5 are symmetrically arranged on the fixed frame 4;

[0038] The piston rods of the two hydraulic cylinders 5 are connected to the same hot plate 6, and heating wires 7 and thermocouples 8 are installed inside the hot plate 6;

[0039] A set of screw slides 9 are symmetrically arranged on the top side of the fixed frame 4, which are consistent with the length extension direction of the support frame 1;

[0040] Each of the two lead screw slides 9 has an electric push rod 21 connected to its moving end;

[0041] The piston rod ends of the two electric push rods 21 are connected to the same mounting bracket 10;

[0042] The assembly frames 10 are rotatably fitted with the same pressing roller 11;

[0043] A servo motor 12 is provided on the side wall of the assembly frame 10. The output end of the servo motor 12 is fixedly connected to the end of the pressing roller 11 through a flexible coupling.

[0044] It should be noted that, due to the insufficient temperature uniformity and stress uniformity of existing hot pressing devices, this solution, through a segmented design combined with an infrared temperature measurement channel 19, ensures the uniformity and stability of temperature during the hot pressing process, achieving precise control. At the same time, the synergistic effect of the pressing roller 11 and the hot pressing plate 6 improves the stress uniformity, thereby ensuring product quality. Furthermore, the nano-ceramic heat insulation coating on the surface of the pressing roller 11 not only improves the hot pressing efficiency but also greatly extends its service life and reduces wear. Moreover, the segmented design makes maintenance and replacement more convenient and flexible, reduces costs, and further extends the overall service life.

[0045] Specifically, in this embodiment, the solution mainly includes a support frame 1, on which the fire door material is placed on a conveyor belt 2; the conveyor belt 2 extends along the length of the support frame 1 and is provided with a wear-resistant and anti-slip layer to ensure the stability and accuracy of the material during the conveying process; the surface of the wear-resistant and anti-slip layer is also provided with a pressure distribution sensor 3 (HBM HGCF-3) to monitor the stress on the material during the hot pressing process in real time.

[0046] The piston rod of the hydraulic cylinder 5 on the fixed frame 4 is connected to a hot press plate 6. The hot press plate 6 is embedded with a heating wire 7 and a thermocouple 8. The heating wire 7 provides the temperature required for hot pressing, while the thermocouple 8 monitors the temperature of the hot press plate 6 in real time to ensure that the temperature is controlled within the preset range. The pressing plate hot presses the fire door material under the action of the hydraulic cylinder 5.

[0047] Meanwhile, the moving ends of the two lead screw slides 9 on the top side of the fixed frame 4 are respectively connected to an electric push rod 21. The piston rods of the two electric push rods 21 are connected to an assembly frame 10 for adjusting the height of the assembly frame 10. A pressing roller 11 is rotatably engaged between the assembly frames 10. The motor of the lead screw slide 9 drives its moving end to move horizontally back and forth. The two lead screw slides 9 extend and retract synchronously, causing the assembly frame 10 and the pressing roller 11 to descend together until the pressing roller 11 contacts the surface of the hot press plate 6.

[0048] The output end of the servo motor 12 is fixedly connected to the end of the pressing roller 11 through a flexible coupling, driving the pressing roller 11 to rotate. The rotation of the pressing roller 11 and the downward pressing of the hot press plate 6 work together to ensure that the fire door material is subjected to uniform force during the hot pressing process, and to avoid uneven pressing by a single hot press plate 6.

[0049] Throughout the hot pressing process, the pressure distribution sensor 3 continuously monitors the stress to ensure uniform stress on the material; the thermocouple 8 monitors the temperature of the hot pressing plate 6 in real time to ensure temperature stability; and the servo motor 12 precisely controls the rotation speed and direction of the pressing roller 11 according to the preset program and parameters.

[0050] In a further preferred embodiment of this utility model, such as Figure 3-5 As shown, a set of receiving plates 13 are symmetrically distributed on both sides of the hot press plate 6. The receiving plates 13 are connected to the hot press plate 6 by countersunk bolts. A set of guide rods 14 are distributed in parallel along the vertical direction on the fixing frame 4. The two receiving plates 13 are slidably engaged with the corresponding guide rods 14 by linear bearings 15.

[0051] In this embodiment, the piston rod of the hydraulic cylinder 5 pushes the hot press plate 6 and the connected receiving plate 13 together to descend along the guide rod 14; since the receiving plate 13 and the guide rod 14 achieve a low-friction, high-precision sliding fit through the linear bearing 15, the hot press plate 6 can smoothly and accurately contact the fire door material on the conveyor belt 2.

[0052] As the hot press plate 6 continues to press down, the heating wire 7 provides the required temperature for hot pressing; at the same time, the thermocouple 8 monitors the temperature of the hot press plate 6 in real time to ensure that it is always maintained within the preset range.

[0053] Throughout the hot pressing process, the sliding fit between the receiving plate 13 and the guide rod 14 ensures the smooth movement and precise positioning of the hot pressing plate 6, thereby guaranteeing the quality and efficiency of the hot pressing. This design not only improves the stability and reliability of the hot pressing device, but also makes the entire hot pressing process more efficient, precise and controllable.

[0054] In a further preferred embodiment of this utility model, such as Figure 3-5 As shown, a limit block 16 is provided at the top of the guide rod 14. The limit block 16 is fixed to the guide rod 14 by welding. The limit block 16 integrates a pressure sensor (LK-G500).

[0055] In this embodiment, when the hot press plate 6 is driven by the hydraulic cylinder 5 to move along the guide rod 14 and is about to contact the limit stop 16, the pressure sensor will immediately capture this slight pressure change and transmit the signal to the PLC control box 22. The PLC control box 22 will quickly adjust the working state of the hydraulic cylinder 5 according to the received signal to ensure that the hot press plate 6 will not be damaged due to excessive pressure, and at the same time ensure the stability and safety of the entire hot pressing process.

[0056] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the guide rod 14 is a hollow structure, with fiber optic strain sensors 17 (HBM FBG-100) embedded inside. The fiber optic strain sensors 17 are evenly distributed along the height extension direction of the guide rod 14.

[0057] In this embodiment, when the hot press plate 6 moves up and down along the guide rod 14 under the drive of the hydraulic cylinder 5, the guide rod 14 itself will bear a certain pressure and tension. These strain conditions will be accurately captured by the fiber optic strain sensor 17 and converted into electrical signals and transmitted to the PLC control box 22, so as to understand the stress state and deformation of the guide rod 14, which helps to discover and deal with potential safety hazards in a timely manner.

[0058] In a further preferred embodiment of this utility model, such as Figure 3 As shown, an electromagnetic clutch 18 is provided between the servo motor 12 and the pressing roller 11.

[0059] In this embodiment, the electromagnetic clutch 18 (G3VM-61A1) can achieve rapid and smooth engagement and disengagement between the pressing roller 11 and the servo motor 12 in both energized and de-energized states. When it is necessary to pause the rotation of the pressing roller 11, the PLC control box 22 can send a signal to de-energize the electromagnetic clutch 18, thereby quickly cutting off the power transmission between the servo motor 12 and the pressing roller 11. Similarly, when it is necessary to restart the pressing roller 11, the PLC control box 22 only needs to send a signal to energize the electromagnetic clutch 18 to restore the power connection between the servo motor 12 and the pressing roller 11, thereby improving the quality and efficiency of hot pressing.

[0060] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the pressing roller 11 is made of segmented high-temperature resistant alloy, and an infrared temperature measurement channel 19 (FLIR T1020) is provided between adjacent segments.

[0061] In this embodiment, the segmented design makes the pressing roller 11 more flexible in manufacturing and maintenance; each segment can be processed, assembled and replaced independently, which not only reduces manufacturing difficulty and cost, but also allows local wear or damage that occurs during hot pressing to be repaired quickly, thereby extending the overall service life of the pressing roller 11.

[0062] Infrared temperature measurement channels 19 are set between adjacent segments; the infrared temperature measurement channels 19 can monitor the temperature distribution on the surface of the pressing roller 11 in real time to ensure the uniformity and stability of temperature during hot pressing; through infrared temperature measurement technology, the PLC control box 22 can acquire the temperature data of the surface of the pressing roller 11 in real time and make adjustments as needed to ensure precise control of the hot pressing process.

[0063] The infrared temperature measurement channel 19 also enables the hot pressing device to detect and deal with potential overheating problems in a timely manner; if the temperature of a certain section is too high, the PLC control box 22 can quickly take measures, such as adjusting the output power of the heating wire 7, to prevent damage due to overheating.

[0064] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, the segmented high-temperature resistant alloy surface is coated with a nano-ceramic heat-insulating coating.

[0065] In this embodiment, the nano-ceramic heat insulation coating can effectively isolate the transfer of high-temperature heat to the inside of the pressing roller 11, thereby reducing heat loss and improving hot pressing efficiency. At the same time, the wear resistance of the nano-ceramic coating also greatly extends the service life of the pressing roller 11 and reduces surface wear caused by long-term high-temperature operation.

[0066] In a further preferred embodiment of this utility model, such as Figure 1-2As shown, a laser alignment sensor 20 (LK-G500) is installed on the side wall of the receiving plate 13, and a PLC control box 22 is installed on the outside of the fixing frame 4.

[0067] In this embodiment, before the hot pressing operation begins, the laser alignment sensor 20 automatically calibrates to ensure that all components are in the preset precise position. Once the hot pressing begins, the laser alignment sensor 20 continuously monitors the position information and immediately sends an alarm to the control system when any deviation is detected. This precise alignment capability not only improves the accuracy and consistency of hot pressing, but also helps to reduce material waste and product quality problems caused by position deviation.

[0068] Meanwhile, the outside of the mounting bracket 4 is equipped with a PLC control box 22 (S7-1500-2DP); the PLC control box 22 is responsible for receiving data from various sensors and performing real-time analysis and processing according to preset programs and algorithms; through the PLC control box 22, users can easily realize the automated control of the hot pressing process, including setting the heating temperature, adjusting the pressing force, and controlling the hot pressing time.

[0069] Working principle: During hot pressing, the fire door material is first placed on the conveyor belt 2, which extends along the length of the support frame 1 and is equipped with a wear-resistant and anti-slip layer to ensure the stability and accuracy of the material during the conveying process. The surface of the wear-resistant and anti-slip layer is also embedded with a pressure distribution sensor 3, which can monitor the stress on the material during the hot pressing process in real time, thereby ensuring the uniformity of hot pressing.

[0070] The piston rod of the hydraulic cylinder 5 on the fixed frame 4 is connected to the hot press plate 6. The hot press plate 6 is embedded with a heating wire 7 and a thermocouple 8. The heating wire 7 is responsible for providing the temperature required for hot pressing, while the thermocouple 8 monitors the temperature of the hot press plate 6 in real time to ensure that the temperature is always maintained within the preset range. When the piston rod of the hydraulic cylinder 5 pushes the hot press plate 6 and the connected receiving plate 13 down along the guide rod 14, the hot press plate 6 can make smooth and accurate contact with the fire door material on the conveyor belt 2 because the receiving plate 13 and the guide rod 14 achieve a low-friction, high-precision sliding fit through the linear bearing 15.

[0071] As the hot press plate 6 continues to press down, the heating wire 7 provides the required temperature for hot pressing; at the same time, the thermocouple 8 continues to monitor the temperature of the hot press plate 6 in real time to ensure the stability and accuracy of the temperature; throughout the hot pressing process, the sliding cooperation between the receiving plate 13 and the guide rod 14 ensures the smooth movement and precise positioning of the hot press plate 6, thereby ensuring the quality and efficiency of hot pressing.

[0072] When the hot press plate 6 is about to contact the limit stop 16, the pressure sensor installed inside the limit stop 16 will immediately capture this slight pressure change and transmit the signal to the PLC control box 22. The PLC control box 22 will quickly adjust the working state of the hydraulic cylinder 5 according to the received signal to ensure that the hot press plate 6 will not be damaged due to excessive pressure, and at the same time ensure the stability and safety of the entire hot pressing process.

[0073] The moving ends of the two lead screw slides 9 on the top side of the fixed frame 4 are respectively connected to an electric push rod 21. The piston rod ends of the two electric push rods 21 are connected to an assembly frame 10. A pressing roller 11 is rotatably engaged between the assembly frames 10. The motor of the lead screw slide 9 drives its moving end to move horizontally back and forth. The two electric push rods 21 extend and retract synchronously, causing the assembly frame 10 and the pressing roller 11 to descend together until the pressing roller 11 contacts the surface of the hot press plate 6.

[0074] The output end of the servo motor 12 is fixedly connected to the end of the pressing roller 11 through a flexible coupling, driving the pressing roller 11 to rotate. The rotation of the pressing roller 11 and the downward pressing of the hot press plate 6 work together to ensure that the fire door material is subjected to uniform force during the hot pressing process, avoiding the problem of uneven pressing by a single hot press plate 6. The electromagnetic clutch 18 can realize the fast and smooth disengagement operation between the pressing roller 11 and the servo motor 12 in the power-on and power-off states, thereby improving the quality and efficiency of hot pressing.

[0075] The pressing roller 11 adopts a segmented design, which makes it more flexible in manufacturing and maintenance. Each segment can be processed, assembled, and replaced independently, which not only reduces manufacturing difficulty and cost, but also allows for rapid repair of local wear or damage that occurs during hot pressing, thereby extending the overall service life of the pressing roller 11. Infrared temperature measurement channels 19 are also set between adjacent segments, which can monitor the temperature distribution on the surface of the pressing roller 11 in real time, ensuring the uniformity and stability of temperature during hot pressing. Through infrared temperature measurement technology, the PLC control box 22 can acquire the temperature data of the surface of the pressing roller 11 in real time and make adjustments as needed to ensure precise control of the hot pressing process.

[0076] In addition, the surface of the pressing roller 11 is coated with a layer of nano-ceramic heat insulation coating; the nano-ceramic heat insulation coating can effectively isolate the transfer of high temperature heat to the inside of the pressing roller 11, thereby reducing heat loss and improving hot pressing efficiency; at the same time, the wear resistance of the nano-ceramic coating also greatly extends the service life of the pressing roller 11 and reduces surface wear caused by long-term high temperature operation.

[0077] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0078] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0079] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0080] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A fire door heat-pressing device, characterized in that, include: Support frame, and conveyor belt located between the support frames, which extends in the same direction as the length of the support frames; The conveyor belt surface is provided with a wear-resistant and anti-slip layer, and a pressure distribution sensor is provided on the surface of the wear-resistant and anti-slip layer. A fixed frame mounted on a support frame; A set of hydraulic cylinders are symmetrically arranged on the fixed frame; The piston rods of the two hydraulic cylinders are connected to the same hot plate, and heating wires and thermocouples are installed inside the hot plate. A set of screw slides is symmetrically arranged on the top side of the fixed frame, which is consistent with the length extension direction of the support frame; Each of the two lead screw slides is connected to an electric push rod at its moving end. The piston rods of the two electric push rods are connected to the same mounting bracket at their ends; The assembly frames are rotated and fitted with the same pressure roller; A servo motor is installed on the side wall of the assembly frame, and the output end of the servo motor is fixedly connected to the end of the pressing roller through a flexible coupling.

2. The fire door heat-pressing device as described in claim 1, characterized in that, A set of receiving plates are symmetrically distributed on both sides of the hot press plate. The receiving plates are connected to the hot press plate by countersunk bolts. A set of guide rods are distributed parallel to each other in the vertical direction on the fixing frame. The two receiving plates are slidably engaged with the corresponding guide rods through linear bearings.

3. The fire door heat-pressing device as described in claim 2, characterized in that, A limit stop is provided at the top of the guide rod. The limit stop is fixed to the guide rod by welding, and a pressure sensor is integrated inside the limit stop.

4. The fire door heat-pressing device as described in claim 3, characterized in that, The guide rod is a hollow structure with fiber optic strain sensors embedded inside. The fiber optic strain sensors are evenly distributed along the height extension direction of the guide rod.

5. The fire door heat-pressing device as described in claim 1, characterized in that, An electromagnetic clutch is installed between the servo motor and the pressing roller.

6. The fire door heat-pressing device as described in claim 5, characterized in that, The pressing roller is made of segmented high-temperature resistant alloy, and infrared temperature measurement channels are provided between adjacent segments.

7. A fire door heat-pressing device as described in claim 6, characterized in that, The segmented high-temperature resistant alloy surface is coated with a nano-ceramic heat-insulating coating.

8. A fire door heat-pressing device as described in claim 2, characterized in that, A laser alignment sensor is installed on the side wall of the receiving plate, and a PLC control box is installed on the outside of the fixing frame.

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