Continuous melt impregnation equipment based on dynamic pressure regulation

Abstract

The invention discloses continuous melt impregnation equipment based on dynamic pressure regulation, which comprises a rack, a fiber band cleaning mechanism and an impregnation mechanism are arranged in the rack, the fiber band cleaning mechanism comprises a driving assembly and two height adjusting assemblies, and the impregnation mechanism comprises a melt bath tank used for accommodating matrix resin in a molten state, the device comprises at least one heating device and at least one resin temperature sensor. The invention relates to the technical field of fiber compounding. According to the continuous melt impregnation equipment based on dynamic pressure adjustment, a precise servo linear actuator is combined with a force sensor and a displacement sensor, so that an impregnation pressure adjusting mechanism with high response and high precision is formed. The mechanism can adjust a roller gap with micron-level precision and respond to a control instruction with millisecond-level response speed, so that the real-time performance and accuracy of impregnation pressure adjustment are ensured, and the system can change according to different fiber bundle characteristics and resin viscosity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber composite, in particular to a continuous melt impregnation equipment based on dynamic pressure regulation. BACKGROUND

[0002] Composite materials have been widely used in many fields such as aerospace, automobile industry, wind power generation and sports leisure due to their high specific strength, high specific modulus, corrosion resistance and designability, and have become an indispensable basic material for the development of modern industry. In the manufacturing process of composite materials, especially for fiber reinforced composites, how to achieve efficient and uniform impregnation between the reinforcing fibers and the matrix resin is a key link to determine the mechanical properties and service reliability of the final product. As an important prepreg preparation process, melt impregnation technology has unique advantages and great development potential in the field of thermoplastic composites due to its environmental friendliness, no solvent pollution and high production efficiency. Among them, the continuous melt impregnation equipment has become the core focus of research and application in this field because it can meet the needs of large-scale and automated production.

[0003] The patent publication No. "CN207859241U" discloses a melt impregnation equipment, which comprises a fiber pre-dispersion zone for heating and dispersing continuous fiber tape, and a melt impregnation zone for impregnating the continuous fiber tape; the melt impregnation zone comprises a resin melt distribution channel and an impregnation channel; the impregnation channel comprises an upper mold and a lower mold, the lower surface of the upper mold and the upper surface of the lower mold are both corrugated, and each has at least one wave crest and one wave trough, and the wave crest and the wave trough on the lower surface of the upper mold correspond to the wave crest and the wave trough on the upper surface of the lower mold, respectively.

[0004] As shown in the above-mentioned technology, the impregnation pressure applied by the existing continuous melt impregnation equipment is usually statically set or only intermittently adjusted manually. This static pressure control mode is essentially mismatched with the dynamic working condition changes that inevitably exist in the continuous production process. Specifically, in actual production, the melt impregnation process is not a completely stable ideal state, but is dynamically affected by various factors. The traditional static pressure regulation scheme cannot effectively cope with the complex and variable dynamic working conditions, resulting in difficulty in maintaining product quality, difficulty in improving production efficiency, high material loss, and the possibility of dust and other impurities adhering to the surface of the fiber tape before impregnation, which will also affect the final impregnation quality. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a continuous melt impregnation equipment based on dynamic pressure regulation, which solves the problem of insufficient dynamic pressure regulation capability of the existing continuous melt impregnation equipment.

[0006] In order to achieve the above object, the application is implemented by the following technical solutions: a continuous melt impregnation equipment based on dynamic pressure regulation comprises a rack, a fiber belt cleaning mechanism and an impregnation mechanism are arranged in the rack, the fiber belt cleaning mechanism comprises a driving assembly, two height adjusting assemblies, two mounting assemblies and two soft cleaning brushes; The impregnation mechanism comprises a melt bath for containing a matrix resin in a molten state, and at least one heating device and at least one resin temperature sensor, the heating device is used for heating the matrix resin to a molten state, and a material port is formed on the left and right sides of the melt bath; At least one pair of impregnation roller assemblies are arranged to allow the fiber belt to pass through the gap therebetween, the impregnation roller assembly comprises a pair of oppositely arranged upper impregnation rollers and lower impregnation rollers, the upper impregnation rollers and the lower impregnation rollers are configured to be rotatable, and at least one roller is configured to be axially movable relative to the other roller, specifically, the upper impregnation rollers are movable; Two pressure adjusting assemblies and a controller are connected with the upper impregnation rollers and controlled by the main controller, the pressure adjusting assembly is configured to drive the upper impregnation rollers to move accurately relative to each other, so as to adjust the gap between the upper impregnation rollers and the lower impregnation rollers, and to apply impregnation pressure to the fiber belt passing through the gap.

[0007] Preferably, the resin temperature sensor is an embedded PT100 platinum resistance temperature sensor, the measurement range is 150-350 DEG C, and the measurement accuracy is ± 0.5 DEG C.

[0008] Preferably, the pressure adjusting assembly comprises a support structure and a precision servo linear actuator, which is configured to receive the control instruction of the controller, and drives the movable roller at an adjusting speed of not less than 0.1 mm / s and a positioning accuracy of not more than ± 5 microns, the support structure is fixed on the inner wall of the melt bath, one side of the support structure is slidably connected with a T-shaped moving block, the T-shaped moving block is connected with the precision servo linear actuator, one side of the T-shaped moving block is provided with a force sensor, the force sensor is configured to measure the actual impregnation pressure borne by the upper impregnation roller in real time, the measurement range is 0-100 kN, and the measurement accuracy is not less than ± 0.5% of the full scale, one side of the support structure is fixedly provided with a displacement sensor, and the displacement sensor is configured to measure the actual gap between the upper impregnation roller and the lower impregnation roller in real time, the measurement range is 0-10 mm, and the measurement accuracy is not less than ± 1 micron.

[0009] Preferably, the controller is an industrial high-performance computing platform, and the controller is installed on a rack, the controller comprises at least one central processing unit, one field programmable gate array or a graphics processing unit, and a non-volatile memory for data storage, the controller is configured to collect all dynamic data output by force sensors and displacement sensors in the pressure adjusting assembly in real time through a high-speed industrial Ethernet interface, run a real-time impregnation pressure model, the model combines a preset theoretical physical model with a machine learning model trained based on historical production data, and inputs key impregnation working condition parameters and target pre-impregnated fiber volume content and target pre-impregnated thickness preset by a user, to calculate and output the theoretical optimal impregnation pressure value and the impregnation roll gap value required to achieve the optimal impregnation effect under the current working condition in real time.

[0010] Preferably, the driving assembly comprises two fixed seats, the two fixed seats are fixedly installed on the left and right sides of the rack, the front surfaces of the two fixed seats are rotationally connected with belt pulleys, the two belt pulleys are drivingly connected through a belt, the two fixed seats are fixedly connected with two driving motors, the surfaces of the two driving motors are slidingly connected with moving blocks, the back surface of one of the fixed seats is fixedly installed with a driving motor, and the output end of the driving motor is fixedly connected with the belt pulley on the same side, the top portions of the two fixed seats are fixedly installed with travel switches, and one side of each of the two moving blocks is fixedly connected with a height adjusting assembly, and the height adjusting assembly is installed with the soft cleaning brush through the mounting assembly.

[0011] Preferably, the height adjusting assembly comprises a fixed seat, the fixed seat is fixedly connected with a belt through a bolt and a nut, the bottom of the inner wall of the fixed seat is rotationally connected with a lead screw, and the surface of the lead screw is threadedly connected with a support seat, and the support seat is slidingly connected with the inner surface of the fixed seat.

[0012] Preferably, the mounting assembly comprises a T-shaped seat formed in the top of the support seat, one side of the support seat is slidingly connected with a limiting rod, the limiting rod penetrates through the support seat and extends into the inside of the T-shaped seat, a limiting spring is sleeved on the surface of the limiting rod outside the support seat, one end of the limiting spring is fixedly connected with one side of the support seat, and the other end of the limiting spring is fixedly connected with the end of the limiting rod.

[0013] Preferably, the left side of the rack is provided with an unwinding assembly, and the right side of the rack is provided with a winding assembly, and the right side of the unwinding assembly is further provided with a tension adjusting mechanism for adjusting the tension of the fiber belt.

[0014] Beneficial effects The application provides a continuous molten impregnation equipment based on dynamic pressure regulation. 1. The continuous melt impregnation equipment based on dynamic pressure regulation, by the combination of the precision servo linear actuator, the force sensor and the displacement sensor, a high-response and high-precision impregnation pressure regulation mechanism is formed. The mechanism can adjust the roller gap with micron-level precision, and respond to the control instruction with millisecond-level response speed, ensuring the real-time and accuracy of the impregnation pressure regulation, which enables the system to dynamically match the most suitable impregnation pressure according to different fiber bundle characteristics and resin viscosity changes, effectively avoiding the problems of insufficient impregnation and high porosity caused by low pressure, and fiber damage, resin overflow and material waste caused by high pressure.

[0015] 2. The continuous melt impregnation equipment based on dynamic pressure regulation, by the cooperation of the driving assembly and the cleaning assembly in the cleaning mechanism, the upper and lower surfaces of the fiber belt are cleaned, avoiding the adhesion of dust and other impurities affecting the impregnation quality, and improving the reliability of the device during use.

[0016] 3. The continuous melt impregnation equipment based on dynamic pressure regulation, the height of the soft cleaning brush in the cleaning assembly can be adjusted, so that the soft cleaning brush can well contact the surface of the fiber belt, and the soft cleaning brush is installed through the mounting assembly, which is convenient and fast to operate when it needs to be replaced or cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the appearance schematic diagram of the present application; Figure 2 It is the schematic diagram of the cleaning mechanism of the present application; Figure 3 It is the exploded schematic diagram of the cleaning assembly of the present application; Figure 4 It is the internal schematic diagram of the impregnation mechanism of the present application; Figure 5 It is the schematic diagram of the impregnation pressure regulation assembly and the impregnation roller assembly of the present application; Figure 6 It is the exploded schematic diagram of the impregnation pressure regulation assembly of the present application.

[0018] In the figure: 1, rack; 2, unwinding assembly; 3, winding assembly; 4, cleaning mechanism; 5, molten bath; 6, upper impregnation roller; 7, lower impregnation roller; 8, pressure adjustment assembly; 81, support structure; 82, precision servo linear actuator; 83, T-shaped moving block; 84, force sensor; 85, displacement sensor; 9, driving assembly; 91, fixed seat; 92, pulley; 93, belt; 94, driving motor; 95, moving block; 96, travel switch; 97, driving motor; 10, height adjustment assembly; 101, fixed seat; 102, screw; 103, support; 11, mounting assembly; 111, T-shaped seat; 112, limiting rod; 113, limiting spring; 12, soft cleaning brush; 13, heating device; 14, material port; 15, controller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-6 The continuous molten impregnation equipment based on dynamic pressure regulation provides a technical solution: The first embodiment: including a rack 1, the inside of the rack 1 is provided with a fiber belt cleaning mechanism and an impregnation mechanism, the left side of the rack 1 is provided with an unwinding assembly 2, and the right side of the rack 1 is provided with a winding assembly 3, the right side of the unwinding assembly 2 is also provided with a tension adjustment mechanism 4 for adjusting the tension of the fiber belt, the fiber belt cleaning mechanism includes a driving assembly 9, two height adjustment assemblies 10, two mounting assemblies 11 and two soft cleaning brushes 12; The impregnation mechanism includes: a molten bath 5 for containing the base resin in a molten state, and at least one heating device 13 and at least one resin temperature sensor, the heating device 13 is used for heating the base resin to a molten state, and the left and right sides of the molten bath 5 are both provided with a material port 14; At least one pair of impregnation roller assemblies are configured to pass the fiber belt through the gap therebetween, the impregnation roller assembly includes a pair of oppositely arranged upper impregnation rollers 6 and lower impregnation rollers 7, the upper impregnation rollers 6 and the lower impregnation rollers 7 are both configured to be rotatable, and at least one roller is configured to be axially movable relative to the other roller, specifically, the upper impregnation rollers 6 are movable; Two pressure adjustment components 8 and a controller 15 are connected to the upper impregnation roller 6 and controlled by the main controller 15. The pressure adjustment components 8 are configured to drive the upper impregnation roller 6 to make precise relative displacement, thereby adjusting the gap between the upper impregnation roller 6 and the lower impregnation roller 7, and applying impregnation pressure to the fiber belt passing through the gap.

[0021] The resin temperature sensor is an embedded PT100 platinum resistance temperature sensor with a measurement range of 150℃ to 350℃ and a measurement accuracy of ±0.5℃.

[0022] The pressure adjustment assembly 8 includes a support structure 81 and a precision servo linear actuator 82, which is configured to receive control commands from the controller 15 and drive the movable roller at an adjustment speed of not less than 0.1 mm / s and a positioning accuracy of not more than ±5 micrometers. The support structure 81 is fixed to the inner wall of the melt bath 5. A T-shaped moving block 83 is slidably connected to one side of the support structure 81, and the T-shaped moving block 83 is connected to the precision servo linear actuator 82. A force sensor 84 is installed on one side of the T-shaped moving block 83, and the force sensor 84 is configured to measure the actual impregnation pressure borne by the upper impregnation roller 6 in real time. Its measurement range is 0 to 100 kN, and the measurement accuracy is not less than ±0.5% of the full scale. A displacement sensor 85 is fixedly installed on one side of the support structure 81, and the displacement sensor 85 is configured to measure the actual gap between the upper impregnation roller 6 and the lower impregnation roller 7 in real time. Its measurement range is 0 to 10 mm, and the measurement accuracy is not less than ±1 micrometer.

[0023] The controller 15 is an industrial-grade high-performance computing platform, and is mounted on the rack 1. The controller 15 includes at least one central processing unit, a field-programmable gate array or graphics processor, and non-volatile memory for data storage. The controller 15 is configured to acquire all dynamic data output by the force sensor 84 and displacement sensor 85 in the pressure adjustment component 8 in real time through a high-speed industrial Ethernet interface, and run a real-time impregnation pressure model. This model combines a preset theoretical physical model with a machine learning model trained based on historical production data, and takes into account key impregnation operating parameters as well as the user-preset target prepreg fiber volume content and target prepreg thickness. It calculates and outputs in real time the theoretically optimal impregnation pressure value and impregnation roller gap value required to achieve the best impregnation effect under the current operating conditions.

[0024] The combination of a precision servo linear actuator 82 with a force sensor 84 and a displacement sensor 85 constitutes a high-response, high-precision impregnation pressure regulating component. This mechanism can adjust the roller gap with micron-level precision and respond to control commands with millisecond-level response speed, ensuring the real-time and accurate adjustment of impregnation pressure. This allows the system to dynamically match the most suitable impregnation pressure according to different fiber bundle characteristics and resin viscosity changes, effectively avoiding problems such as insufficient wetting and high porosity caused by excessively low pressure in traditional equipment, as well as fiber damage, resin overflow, and material waste caused by excessively high pressure.

[0025] The second embodiment differs from the first embodiment in that: the drive assembly 9 includes two fixed seats 91, which are fixedly installed on the left and right sides of the frame 1 respectively. The front of each fixed seat 91 is rotatably connected to a pulley 92, which is connected by a belt 93. Two drive motors 94 are fixedly connected between the two fixed seats 91, and a moving block 95 is slidably connected to the surface of each drive motor 94. A drive motor 97 is fixedly installed on the back of one fixed seat 91, and the output end of the drive motor 97 is fixedly connected to the pulley 92 on the same side. A limit switch 96 is fixedly installed on the top of each fixed seat 91. One side of each of the two moving blocks 95 is fixedly connected to two height adjustment assemblies 10, and the height adjustment assembly 10 is used to install the soft cleaning brush 12 through the mounting assembly 11.

[0026] The upper and lower surfaces of the fiber belt are cleaned by the cooperation of the drive component 9 and the soft cleaning brush 12 in the cleaning mechanism, which avoids the adhesion of dust and other impurities that affect the impregnation quality and improves the reliability of the device during use.

[0027] The third embodiment differs from the second embodiment in that the height adjustment assembly 10 includes a fixed seat 101, which is fixedly connected to the belt 93 by bolts and nuts. A lead screw 102 is rotatably connected to the bottom of the inner wall of the fixed seat 101, and a support seat 103 is threadedly connected to the surface of the lead screw 102. The support seat 103 is slidably connected to the inner surface of the fixed seat 101.

[0028] The mounting assembly 11 includes a T-shaped seat 111 formed on the top of the support base 103. A limiting rod 112 is slidably connected to one side of the support base 103, and the limiting rod 112 passes through the support base 103 and extends into the interior of the T-shaped seat 111. A limiting spring 113 is sleeved on the surface of the limiting rod 112 located outside the support base 103. One end of the limiting spring 113 is fixedly connected to one side of the support base 103, and the other end of the limiting spring 113 is fixedly connected to the end of the limiting rod 112.

[0029] The height of the soft cleaning brush 12 in the cleaning mechanism can be adjusted to ensure good contact between the soft cleaning brush 12 and the surface of the fiber belt. The soft cleaning brush 12 is installed through the mounting component 11, making it convenient and quick to replace or clean when needed.

[0030] In use, first, the fiber belt is installed on the unwinding assembly 2. After passing through the tension adjustment mechanism 4, the fiber belt enters the fiber belt cleaning mechanism and is located between the two soft cleaning brushes 12. The drive motor 94 is started to make the pulley 92 rotate. The rotation of the pulley 92 drives the other pulley 92 to rotate through the belt 93. At this time, the belt 93 moves and drives the two soft cleaning brushes 12 to move in opposite directions. After the moving block 95 contacts the limit switch 96, the drive motor 97 rotates in the opposite direction, thereby continuously completing the cleaning process of the fiber belt. In addition, when the contact between the soft cleaning brush 12 and the surface of the fiber belt is not good enough, the screw 102 is rotated to adjust the height of the soft cleaning brush 12. In addition, when it is necessary to replace the soft cleaning brush 12, the limit rod 112 is pulled outward, and the soft cleaning brush 12 is removed.

[0031] Next, the fiber belt enters the molten bath 5 in the impregnation mechanism and makes initial contact with the matrix resin heated to a molten state by the heating device 13. The resin temperature sensor monitors the molten resin temperature in real time and transmits the data to the controller 15. Subsequently, the fiber belt passes through the impregnation roller assembly. The force sensor 84 and displacement sensor 85 in the pressure adjustment assembly 8 measure the actual impregnation pressure and roller gap in real time and transmit the data to the controller 15. After receiving all sensor data, the controller 15 processes the data and combines it with a preset model. The real-time impregnation pressure model calculates the theoretically optimal impregnation pressure value and impregnation roller gap value under the current working conditions based on the analyzed key working condition parameters, the target prepreg fiber volume content and target thickness set by the user.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous melt impregnation plant based on dynamic pressure regulation comprising a frame (1), characterized in that: The inside of the frame (1) is provided with a fiber belt cleaning mechanism and an impregnation mechanism, the fiber belt cleaning mechanism comprises a driving assembly (9), two height adjusting assemblies (10), two mounting assemblies (11) and two soft cleaning brushes (12); The impregnation mechanism comprises a molten bath (5) for containing the base resin in a molten state, and at least one heating device (13) and at least one resin temperature sensor, the heating device (13) is used for heating the base resin to a molten state, and the left and right sides of the molten bath (5) are provided with a feeding port (14); At least one pair of impregnation roller assemblies are configured to pass through the gap between the upper and lower impregnation rollers (6) and (7), and the upper impregnation roller (6) is movable. Two pressure adjusting assemblies (8) and a controller (15) are connected with the upper impregnation roller (6) and controlled by the main controller (15), the pressure adjusting assembly (8) is configured to drive the upper impregnation roller (6) to move accurately, so as to adjust the gap between the upper and lower impregnation rollers (6) and (7), and apply impregnation pressure to the fiber belt passing through the gap.

2. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 1, characterized in that: The resin temperature sensor is an embedded PT100 platinum resistance temperature sensor.

3. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 1, characterized in that: The pressure adjusting assembly (8) comprises a support structure (81) and a precision servo linear actuator (82), and is configured to receive the control instruction of the controller (15) and drive the movable roller at an adjusting speed of not less than 0.1mm / s and a positioning accuracy of not more than ±5 microns, the support structure (81) is fixed on the inner wall of the molten bath (5), one side of the support structure (81) is slidably connected with a T-shaped moving block (83), the T-shaped moving block (83) is connected with the precision servo linear actuator (82), one side of the T-shaped moving block (83) is provided with a force sensor (84), the force sensor (84) is configured to measure the actual impregnation pressure borne by the upper impregnation roller (6) in real time, one side of the support structure (81) is fixedly provided with a displacement sensor (85), and the displacement sensor (85) is configured to measure the actual gap between the upper and lower impregnation rollers (6) and (7) in real time.

4. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 3, characterized in that: The controller (15) is an industrial high-performance computing platform, and the controller (15) is installed on the rack (1), the controller (15) includes at least one central processing unit, one field programmable gate array or a graphics processor, and a non-volatile memory for data storage, the controller (15) is configured to collect all dynamic data output by the force sensor (84) and the displacement sensor (85) in the pressure adjusting assembly (8) in real time through the high-speed industrial Ethernet interface, run a real-time impregnation pressure model, the model is combined by combining a preset theoretical physical model and a machine learning model trained based on historical production data, and inputs key impregnation working condition parameters and user preset target pre-impregnated fiber volume content and target pre-impregnated thickness, and the theoretical optimal impregnation pressure value and the impregnation roll gap value required to achieve the optimal impregnation effect under the current working condition are calculated and output in real time.

5. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 1, characterized in that: The driving assembly (9) comprises two fixed seats (91) fixedly installed on the left and right sides of the rack (1), the front surfaces of the two fixed seats (91) are rotationally connected with belt pulleys (92), the two belt pulleys (92) are drivingly connected through a belt (93), the two fixed seats (91) are fixedly connected with two driving motors (94) arranged above and below, the surfaces of the two driving motors (94) are slidingly connected with moving blocks (95), the back surface of one fixed seat (91) is fixedly installed with a driving motor (97), and the output end of the driving motor (97) is fixedly connected with the belt pulley (92) on the same side, the top portions of the two fixed seats (91) are fixedly installed with travel switches (96), and one side of each of the two moving blocks (95) is fixedly connected with a height adjusting assembly (10), and the height adjusting assembly (10) is installed with a soft cleaning brush (12) through a mounting assembly (11).

6. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 5, characterized in that: The height adjusting assembly (10) comprises a fixed seat (101) fixedly connected with the belt (93) through bolts and nuts, a screw rod (102) rotationally connected to the bottom of the inner wall of the fixed seat (101), and a support seat (103) threadedly connected to the surface of the screw rod (102) and slidingly connected to the inner surface of the fixed seat (101).

7. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 6, characterized in that: The mounting assembly (11) comprises a T-shaped seat (111) formed in the top of the support seat (103), a limiting rod (112) slidingly connected to one side of the support seat (103), and extending into the inside of the T-shaped seat (111), a limiting spring (113) sleeved on the surface of the limiting rod (112) outside the support seat (103), one end of the limiting spring (113) fixedly connected to one side of the support seat (103), and the other end of the limiting spring (113) fixedly connected to the end of the limiting rod (112).

8. A continuous melt impregnation apparatus based on dynamic pressure regulation according to claim 1, characterized in that: The left side of the frame (1) is provided with a unwinding assembly (2), and the right side of the frame (1) is provided with a winding assembly (3), and the right side of the unwinding assembly (2) is further provided with a tension adjusting mechanism (4) for adjusting the tension of the fiber belt.

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