Intelligent temperature control type high polymer fiber needle punched cotton forming equipment

Abstract

This invention discloses an intelligent temperature-controlled polymer fiber needle-punched cotton forming device. Its main frame consists of a main mounting frame and two lateral mounting brackets. The upper and lower ends of the lateral mounting brackets are respectively hinged to an electrically controlled upper adjustment frame and an electrically controlled lower adjustment frame. Both ends of the two adjustment frames are equipped with an external intelligent temperature control module consisting of an electrically controlled flow pump, segmented flow pipes, end flow hoods, an embedded electric heating module, an optical positioning module, and a temperature sensor controller. The first and second forming steel rollers have several internal temperature control holes circumferentially opened inside. This invention can significantly improve the consistency and yield of heat-set products. Simultaneously, the hinged and flipping structure of the electrically controlled adjustment frame eliminates the need for disassembly for steel roller maintenance, significantly shortening maintenance time and greatly reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of thermoforming equipment technology, and in particular to an intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment. Background Technology

[0002] High-polymer fiber needle-punched cotton is widely used in automotive interiors, building insulation, air filtration, and medical and health fields due to its excellent filtration performance, sound absorption and heat insulation properties, and good mechanical strength. The production process of needle-punched cotton mainly includes opening, carding, web formation, needle punching reinforcement, and thermosetting. Among these, thermosetting is the key step that determines the uniformity of product thickness, surface smoothness, and dimensional stability. Currently, forming equipment typically uses upper and lower steel rollers to hot-press and shape the needle-punched fiber cotton. The steel rollers have internal heating channels, and the roller surface is heated by hot air or electricity to achieve continuous hot-pressing of the fiber cotton.

[0003] However, existing molding equipment has the following problems: First, the temperature control accuracy of the steel rollers is insufficient. Traditional heating methods mostly adopt a general heating and temperature control mode, resulting in uneven temperature distribution on the surface of the steel rollers. Furthermore, it cannot precisely adjust the temperature according to the different processing locations of the fiber cotton (such as the edge and center, the feed end and the discharge end), leading to poor product thickness consistency and quality defects such as bright spots or indentations on the surface. Second, the maintenance of the steel rollers is complex. When the heating element or hot air pipeline malfunctions, the entire production line must be shut down for repair. Disassembling the steel rollers, replacing the heating element, or cleaning the pipeline is time-consuming and labor-intensive, resulting in high maintenance costs and severely impacting production efficiency and equipment utilization.

[0004] Therefore, how to improve the temperature control accuracy and flexible adjustment capability of forming steel rollers, while reducing maintenance difficulty and cost, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The technical problem that this invention aims to solve is that the temperature control accuracy of existing forming steel rollers is insufficient, making it impossible to precisely adjust the temperature in different zones according to the temperature changes at different processing positions. Furthermore, equipment maintenance requires downtime and incurs high maintenance costs.

[0006] The technical solution adopted by the present invention to solve its technical problem is: an intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment, including a main frame, a first forming steel roller and a second forming steel roller. The main frame is composed of a main mounting frame and lateral mounting brackets located on the inner walls of both sides of the main mounting frame. An electrically controlled upper adjustment frame for installing the first forming steel roller is hinged to the upper end of the lateral mounting bracket, and an electrically controlled lower adjustment frame for installing the second forming steel roller is hinged to the lower end of the lateral mounting bracket. An external intelligent temperature control module is installed at both ends of the electrically controlled upper adjustment frame and the electrically controlled lower adjustment frame. Several internal temperature control holes are opened circumferentially inside the first forming steel roller and the second forming steel roller.

[0007] Furthermore, the electronically controlled upper adjustment frame includes an upper flipping frame hinged to the upper end of the lateral mounting bracket and an upper adjustment support rod hinged to the upper end of the lateral mounting bracket. The upper adjustment support rod controls the upper flipping frame to flip and adjust at the upper end of the lateral mounting bracket through telescopic control, thereby changing the position of the first forming steel roller.

[0008] Furthermore, the electrically controlled lower adjustment frame includes a lower flipping frame hinged to the lower end of the lateral mounting bracket and a lower adjustment strut hinged to the lower end of the lateral mounting bracket. The lower adjustment strut controls the lower flipping frame to flip and adjust at the lower end of the lateral mounting bracket through telescopic control, thereby changing the position of the second forming steel roller.

[0009] Furthermore, the external intelligent temperature control module includes an electrically controlled flow pump fixed on a lateral mounting bracket, a segmented side-mounted flow output pipe, a segmented side-mounted flow return pipe, an end flow output cover, an end flow return cover, an embedded electric heating module, an optical positioning module, and a temperature sensor controller fixed on the inner wall of the end flow return cover.

[0010] Furthermore, both the upper and lower flipping frames are hinged with electrically controlled scraping guide covers on their inner upper ends.

[0011] Furthermore, the electrically controlled scraper guide cover includes an inner flip frame hinged to the upper inner side of the upper flip frame and the lower flip frame, an inner control strut for controlling the inner flip frame, and a metal scraper cover installed inside the inner flip frame.

[0012] Furthermore, a near-field temperature monitoring module is fixedly installed on one side of the metal scraper cover near its end.

[0013] Furthermore, an external guide shroud is fixedly mounted on the outside of the end guide output shroud and the end guide return shroud, and an outer guide shroud is installed on the outside of the external guide shroud through a lateral guide pipe.

[0014] Furthermore, the two openings of the internal temperature control hole are equipped with flexible check valves.

[0015] Furthermore, both the segmented side-mounted flow output pipe and the segmented side-mounted flow return pipe are composed of a fixed flow pipe and a movable flow pipe. The end of the fixed flow pipe is connected to the movable flow pipe through a bifurcated flow pipe with a built-in solenoid valve.

[0016] The beneficial effects of this invention are:

[0017] (1) The present invention uses air as the heat transfer medium, eliminating the need to consider leakage issues, simplifying the equipment sealing structure, and reducing manufacturing and maintenance costs; through the external intelligent temperature control module and the internal temperature control hole design, independent and precise temperature control of each processing area is achieved, the surface temperature of the steel roller is uniform and stable, and the temperature can be precisely adjusted in different zones according to the different processing positions of the fiber cotton, effectively eliminating quality defects such as inconsistent product thickness, bright spots or indentations on the surface, and significantly improving the product qualification rate;

[0018] (2) The present invention uses the hinged flipping structure of the upper and lower electrically controlled adjustment frames to flip the steel roller to the open position when maintenance is required. The heating element can be replaced and the air duct can be cleaned without disassembling the steel roller. The maintenance process does not require the entire line to be shut down, the maintenance time is greatly shortened and the maintenance cost is reduced.

[0019] (3) The present invention uses air as a heat transfer medium, so there is no need to consider leakage problems. The hot air can be used to blow away the surface of the metal scraper, and the scraped fiber material can be blown back to the surface of the raw material to achieve in-situ recycling. At the same time, the near-field temperature monitoring module can detect the surface temperature of the steel roller in real time and scrape away the sticky fiber material in time, so as to avoid temperature abnormalities and product quality problems caused by fiber material accumulation, and realize fully automated temperature control management. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a partially enlarged structural diagram of the external intelligent temperature control module and the steel roller assembly of the present invention.

[0023] Figure 3 This is a schematic diagram of the electrically controlled scraper guide cover structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the internal temperature control hole in this invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Main frame; 11. Main mounting frame; 12. Lateral mounting bracket; 2. First forming steel roller; 3. Second forming steel roller; 4. Electrically controlled upper adjusting frame; 41. Upper flipping frame; 42. Upper adjusting support rod; 5. Electrically controlled lower adjusting frame; 51. Lower flipping frame; 52. Lower adjusting support rod; 6. External intelligent temperature control module; 61. Electrically controlled diversion pump; 62. Segmented side-mounted diversion output pipe; 63. Segmented side-mounted diversion return pipe; 64. End diversion output cover; 6 5. End flow guide shroud; 66. Embedded electric heating module; 67. Optical positioning module; 68. Temperature sensor controller; 7. Internal temperature control hole; 71. Elastic check valve; 8. Electrically controlled scraper guide shroud; 81. Inner flip frame; 82. Inner control support rod; 83. Metal scraper shroud; 84. Near-field temperature monitoring module; 9. External flow guide shroud; 91. Lateral flow guide tube; 92. Peripheral flow guide shroud; 10. Branched flow guide tube; 101. Electrically controlled valve; 102. Fixed flow guide tube; 103. Movable flow guide tube. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment shown includes a main frame 1, a first forming steel roller 2, and a second forming steel roller 3. The main frame 1 consists of a main mounting frame 11 and lateral mounting brackets 12 located on the inner walls of both sides of the main mounting frame 11. An electrically controlled upper adjustment frame 4 for mounting the first forming steel roller 2 is hinged to the upper end of the lateral mounting bracket 12, and an electrically controlled lower adjustment frame 5 for mounting the second forming steel roller 3 is hinged to the lower end of the lateral mounting bracket 12. External intelligent temperature control modules 6 are installed at both ends of the electrically controlled upper adjustment frame 4 and the electrically controlled lower adjustment frame 5. Several internal temperature control holes 7 are opened circumferentially inside the first forming steel roller 2 and the second forming steel roller 3.

[0029] like Figure 1As shown, the electrically controlled upper adjustment frame 4 includes an upper flipping frame 41 hinged to the upper end of the lateral mounting bracket 12 and an upper adjusting support rod 42 hinged to the upper end of the lateral mounting bracket 12. The upper adjusting support rod 42 controls the upper flipping frame 41 to flip and adjust at the upper end of the lateral mounting bracket 12 by telescopic control, thereby changing the position of the first forming steel roller 2. Similarly, the electrically controlled lower adjustment frame 5 includes a lower flipping frame 51 hinged to the lower end of the lateral mounting bracket 12 and a lower adjusting support rod 52 hinged to the lower end of the lateral mounting bracket 12. The lower adjusting support rod 52 controls the lower flipping frame 51 to flip and adjust at the lower end of the lateral mounting bracket 12 by telescopic control, thereby changing the position of the second forming steel roller 3.

[0030] Both the upper adjustable support rod 42 and the lower adjustable support rod 52 are electrically controlled telescopic actuators, each integrating a position sensor and a servo motor. The temperature sensor controller 68 is connected to the servo motor drivers of the upper and lower adjustable support rods 42 and 52 via electrical signal lines. When the system detects a maintenance signal or receives an operation command, the temperature sensor controller 68 sends control pulses to the corresponding servo motor driver, driving the servo motor to rotate. The rotational motion is converted into linear telescopic motion via a screw and nut mechanism, causing the upper or lower adjustable support rod 42 to extend outwards at a set speed and stroke. Under the thrust of the support rods, the upper or lower flipping frame 41 flips outwards around the hinge point. The flipping angle is fed back in real-time by the position sensor. When the frame flips to the preset open maintenance angle, the controller issues a stop signal and locks the support rod position. At this time, the first forming steel roller 2 or the second forming steel roller 3 is fully exposed in the operating area. Maintenance personnel can directly inspect or replace the heating elements, hot air pipes, etc. without disassembling the steel rollers. The entire maintenance process is completed without stopping the machine. After the maintenance is completed, the controller reverses the drive to retract the support rod back to its original position.

[0031] like Figure 1 and Figure 2 As shown, the external intelligent temperature control module 6 includes an electrically controlled flow pump 61 fixed on the lateral mounting bracket 12, a segmented side-mounted flow output pipe 62, a segmented side-mounted flow return pipe 63, an end flow output cover 64, an end flow return cover 65, an embedded electric heating module 66, an optical positioning module 67, and a temperature sensor controller 68 fixed on the inner wall of the end flow return cover 65.

[0032] The principle of the zoned closed-loop temperature control of this invention is as follows: Driven by the electrically controlled flow pump 61, the heat transfer medium (hot air) flows into the end flow output cover 64 through the segmented side-mounted flow output pipe 62, then is distributed to the internal temperature control holes 7 inside the steel roller. After flowing through each area of ​​the steel roller, it is collected through the end flow return cover 65 and returned to the electrically controlled flow pump 61 through the segmented side-mounted flow return pipe 63, forming a circulation loop. The number and position distribution of the segmented side-mounted flow output pipe 62 and the segmented side-mounted flow return pipe 63 correspond to different temperature control zones of the steel roller, with each zone independently corresponding to a flow pipe segment.

[0033] The temperature sensor controller 68 is the core control unit of the temperature control system, integrating a microprocessor, an analog-to-digital converter module, and a PID control algorithm. The temperature sensor controller 68 is connected via a signal line to a temperature sensor fixed to the inner wall of the end flow return shroud 65, acquiring the temperature signal of the returning heat transfer medium in real time. After analog-to-digital conversion, the signal is compared with preset target temperature values ​​for each section to calculate the temperature deviation signal. The optical positioning module 67 has multiple optical reference marks distributed along the axial direction of the steel roller, accurately locating the position coordinates of the current temperature control section through photoelectric sensing, enabling the temperature sensor controller 68 to precisely associate each temperature sensor reading with the corresponding temperature control section.

[0034] The temperature sensor controller 68 executes the following three parallel controls based on the magnitude and direction of the temperature deviation signal: First, by adjusting the output frequency of the variable frequency drive of the electrically controlled diversion pump 61, the circulation flow rate of the heat transfer medium is changed; that is, the flow rate is increased when the temperature in a certain section is too low, and decreased when the temperature is too high. Second, by controlling the opening of the electrically controlled valves 101 on each branch diversion pipe 10, the distribution ratio of the heat transfer medium in each temperature control section is independently adjusted to achieve differentiated temperature control for each zone. Third, the embedded electric heating module 66 provides auxiliary precise heating compensation for the return medium in each section; the heating power is controlled by a PWM signal. The flexible check valve 71 opens when the heat transfer medium is flowing and closes when it stops flowing to prevent temperature fluctuations caused by medium backflow. The above three controls work together to form a feedforward-feedback composite closed-loop control, enabling the temperature control accuracy of each section to reach within ±1℃.

[0035] like Figure 1 and Figure 3 As shown, both the upper and lower flip frames 41 and 51 are hinged to their inner upper ends with electrically controlled scraper guide covers 8. The electrically controlled scraper guide cover 8 includes an inner flip frame 81 hinged to the inner upper ends of the upper and lower flip frames 41 and 51, an inner control support rod 82 for controlling the inner flip frame 81, and a metal scraper cover 83 installed inside the inner flip frame 81. A near-field temperature monitoring module 84 is fixedly installed on one side of the metal scraper cover 83 near its end.

[0036] The near-field temperature monitoring module 84 is a non-contact infrared temperature sensor. Its field of view covers the entire area of ​​the steel roll surface in the width direction, and it continuously collects the temperature distribution data of the steel roll surface at a sampling frequency of not less than 10Hz. After receiving the real-time temperature signal from the near-field temperature monitoring module 84, the temperature sensor controller 68 compares the current temperature distribution curve with the standard uniform temperature distribution curve. When the temperature difference between the local surface temperature of the steel roll and the adjacent area exceeds a preset threshold (e.g., ±5℃), or when an abnormal point of thermal resistance due to fiber adhesion is found on the surface of the steel roll, the temperature sensor controller 68 determines that there is fiber accumulation or temperature abnormality in the area, and then executes adaptive response control: First, a control signal is sent to the servo motor driver of the inner control support rod 82, and the inner control support rod 82 drives the inner flipping frame 81 to flip inward, so that the scraping blade of the metal scraper cover 83 is close to the surface of the steel roll with precisely controlled contact pressure; Second, the metal scraper cover 83 moves relative to the steel roll to remove the adhered fiber. The fiber material is scraped off, with the scraping angle and force fed back in real time by a position sensor, and automatically adjusted according to the adhesion thickness. In the third step, while scraping, the temperature sensor controller 68 synchronously adjusts the opening of the electric control valve 101 and the PWM duty cycle of the embedded electric heating module 66 in the corresponding temperature control section to increase the heat compensation in this area and accelerate the temperature recovery to uniformity. In the fourth step, the near-field temperature monitoring module 84 continuously monitors the temperature recovery curve after scraping. When the temperature recovers to the normal range and runs stably for more than the set time, the controller drives the inner control support rod 82 to retract back to its original position, and the metal scraping cover 83 returns to the standby position.

[0037] The heat transfer medium used in this invention is air (hot air), which has the following significant advantages compared to traditional liquid heat transfer media (such as heat transfer oil): Since air is a compressible fluid, even minor leaks during system operation will not cause environmental pollution or medium loss. It eliminates the need for complex sealing structures and leak monitoring devices, simplifying the equipment structure and reducing manufacturing costs. More importantly, the hot air escaping or being drawn out of the system can be utilized. Through a guide nozzle or purging pipe located above the metal scraper cover 83, the overflowing hot air is directed to the surface of the metal scraper cover 83. The shear force of the airflow blows the scraped fiber material away from the surface of the metal scraper cover 83, causing the fiber material to fall back to the raw material surface below under the action of the airflow. This achieves in-situ recycling of the fiber material and avoids secondary adhesion and temperature abnormalities caused by the accumulation of scraped fiber material on the cover surface.

[0038] like Figure 2As shown, an external guide shroud 9 is fixedly mounted on the outside of the end guide output shroud 64 and the end guide return shroud 65. An outer guide fan shroud 92 is installed on the outside of the outer guide shroud 9 through a lateral guide pipe 91. Under the control of the temperature sensor controller 68, the outer guide fan shroud 92 selectively activates the fans at the corresponding positions according to the temperature conditions of each section to provide auxiliary heat dissipation and airflow guidance for the ends of the steel roll, avoiding temperature gradient differences at both ends of the steel roll due to excessive heat dissipation.

[0039] The internal temperature control holes 7 are evenly distributed along the axial and circumferential directions of the steel roller. Their number and diameter are determined according to the steel roller diameter and working heat load. The elastic check valves 71 installed inside the two openings automatically open when the heat transfer medium flows and automatically close when the flow stops to prevent temperature fluctuations caused by medium backflow. The segmented side-mounted flow output pipe 62 and the segmented side-mounted flow return pipe 63 are both composed of a fixed flow guide pipe 102 and a movable flow guide pipe 103. The fixed flow guide pipe 102 is fixed on the lateral mounting bracket 12. One end of the movable flow guide pipe 103 is connected to the fixed flow guide pipe 102 through a rotary joint, and the other end is connected to the end flow output cover 64 or the end flow return cover 65. The end of the fixed flow guide pipe 102 is connected to the movable flow guide pipe 103 through the branched flow guide pipe 10 with built-in solenoid valves 101. The number of solenoid valves 101 is consistent with the number of temperature control sections. Each solenoid valve 101 is independently equipped with an electromagnetic actuator and an opening position sensor. The temperature sensor controller 68 sends opening commands to each solenoid valve 101 via a bus communication protocol. After the microprocessor of each solenoid valve 101 decodes the commands, it drives the electromagnet to move. By adjusting the valve core position proportionally, it achieves precise proportional control of the flow rate of the heat transfer medium in each section, thereby independently adjusting the heat supply of each temperature control zone.

[0040] In summary, this invention uses a temperature sensor controller 68 as the core control hub, integrating the electrically controlled flow pump 61 and its frequency converter, the embedded electric heating module 66 and its PWM driver, the electrically controlled valves 101 of each section and their proportional electromagnetic drivers, the servo motors of the electrically controlled upper adjustment frame 4 and the electrically controlled lower adjustment frame 5, the inner control support rod 82 of the electrically controlled scraper guide cover 8, the near-field temperature monitoring module 84, and the fan motor of the outer flow guide cover 92 into a unified intelligent temperature control system. The temperature sensor controller 68 has a pre-set multi-zone temperature control strategy that automatically allocates the heat transfer medium flow rate and heating power according to the temperature requirements of each section of the fiber cotton processing technology. Simultaneously, it dynamically compensates and adjusts based on the real-time temperature distribution feedback from the near-field temperature monitoring module 84, ensuring that the surface temperature fluctuation of the steel roller is controlled within ±2℃ and the product thickness tolerance is controlled within ±0.05mm, effectively avoiding surface defects such as bright spots and indentations caused by temperature differences.

[0041] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A smart temperature-controlled polymer fiber needle-punched cotton forming device, comprising a main frame (1), a first forming steel roller (2), and a second forming steel roller (3), characterized in that: The main frame (1) consists of a main mounting frame (11) and lateral mounting brackets (12) located on the inner walls of both sides of the main mounting frame (11). The upper end of the lateral mounting bracket (12) is hinged to an electrically controlled upper adjustment frame (4) for installing the first forming steel roller (2), and the lower end of the lateral mounting bracket (12) is hinged to an electrically controlled lower adjustment frame (5) for installing the second forming steel roller (3). Both ends of the electrically controlled upper adjustment frame (4) and the electrically controlled lower adjustment frame (5) are equipped with external intelligent temperature control modules (6). The first forming steel roller (2) and the second forming steel roller (3) have several internal temperature control holes (7) opened in the circumferential direction inside.

2. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 1, characterized in that: The electrically controlled upper adjustment frame (4) includes an upper flip frame (41) hinged to the upper end of the side mounting bracket (12) and an upper adjustment support rod (42) hinged to the upper end of the side mounting bracket (12). The upper adjustment support rod (42) controls the upper flip frame (41) to flip and adjust at the upper end of the side mounting bracket (12) by telescopic control, thereby changing the position of the first forming steel roller (2).

3. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 2, characterized in that: The electrically controlled lower adjustment frame (5) includes a lower flip frame (51) hinged to the lower end of the lateral mounting bracket (12) and a lower adjustment support rod (52) hinged to the lower end of the lateral mounting bracket (12). The lower adjustment support rod (52) controls the lower flip frame (51) to flip and adjust at the lower end of the lateral mounting bracket (12) by telescopic control, thereby changing the position of the second forming steel roller (3).

4. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 3, characterized in that: The external intelligent temperature control module (6) includes an electrically controlled flow pump (61) fixed on a side mounting bracket (12), a segmented side-mounted flow output pipe (62), a segmented side-mounted flow return pipe (63), an end flow output cover (64), an end flow return cover (65), an embedded electric heating module (66), an optical positioning module (67), and a temperature sensor controller (68) fixed on the inner wall of the end flow return cover (65).

5. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 3, characterized in that: Both the upper flip frame (41) and the lower flip frame (51) are hinged to an electrically controlled scraping guide cover (8) on their inner upper ends.

6. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 5, characterized in that: The electrically controlled scraper guide cover (8) includes an inner flip frame (81) hinged to the upper inner side of the upper flip frame (41) and the lower flip frame (51), an inner control support rod (82) for controlling the inner flip frame (81), and a metal scraper cover (83) installed inside the inner flip frame (81).

7. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 6, characterized in that: A near-field temperature monitoring module (84) is fixedly installed on one side of the metal scraper cover (83) near its end.

8. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 4, characterized in that: An external guide shroud (9) is fixedly mounted on the outside of the end guide output shroud (64) and the end guide return shroud (65). An outer guide shroud (92) is installed on the outside of the external guide shroud (9) through a lateral guide pipe (91).

9. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 1, characterized in that: The internal temperature control hole (7) has two openings with elastic check valves (71).

10. The intelligent temperature-controlled polymer fiber needle-punched cotton forming equipment according to claim 4, characterized in that: The segmented side-mounted flow output pipe (62) and the segmented side-mounted flow return pipe (63) are both composed of a fixed flow pipe (102) and a movable flow pipe (103). The end of the fixed flow pipe (102) is connected to the movable flow pipe (103) through the bifurcated flow pipe (10) of the built-in solenoid valve (101).

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