Aging device for NTC heating wire production

Abstract

The present application relates to the technical field of NTC heating wire production, and discloses an aging device for NTC heating wire production, which comprises a heating module and a guiding module.The NTC heating wire is sent into the heat preservation box one by one, so that the NTC heating wire can be aged in the same path, and each part of the heating wire can be uniformly heated, effectively avoiding the problem of uneven aging caused by position difference.Meanwhile, the space in the heat preservation box is fully utilized, and the NTC heating wire can be bent along the roller assembly, so as to release the stress generated in the aging and heating process, effectively preventing the heating wire from being broken or the performance from being reduced due to stress concentration.In addition, the device is separated into a first hot air module and a second hot air module by a partition, so that the aging temperature of the first working cavity and the second working cavity can be set respectively for different specifications of NTC heating wire, further improving the consistency and stability of the aging effect.

Description

Technical Field

[0001] This invention relates to the field of NTC heating wire production technology, and more specifically to an aging device for NTC heating wire production. Background Technology

[0002] Existing NTC heating wires typically consist of a three-layer structure. The inner layer usually uses flexible fibers such as polyester filaments as a skeleton, on which heating wires (which can be PTC heating wires or other types of heating wires) are wound according to design requirements. If PTC (Positive Temperature Coefficient) heating wires are used, their resistance increases sharply when the temperature reaches a certain value (Curie point), giving the heating wire self-limiting temperature capability. The middle layer mainly consists of an NTC (Negative Temperature Coefficient) material layer and a detection wire (outer layer wire) wound around it. The characteristic of NTC material is that its resistance decreases smoothly with increasing temperature. The controller can accurately sense the temperature of the heating wire in real time by detecting the resistance change of this circuit. In addition, PTC heating wires can also be placed in the middle or outer layer according to the actual application scenario to optimize heating efficiency and temperature control. The outermost layer is usually wrapped with insulating PVC (polyvinyl chloride) or other polymer materials, mainly for insulation and protection, ensuring safe use, while resisting a certain amount of wear, pressure and chemical corrosion, extending the product's service life.

[0003] Currently, NTC heating wires generally exhibit unstable resistance during initial use. Furthermore, the polyester filament structure inside the heating wire shrinks to varying degrees upon heating. If this shrinkage is not controlled, it can cause deformation of the overall heating wire structure, affecting its electrical and mechanical properties. Therefore, heating wires undergo aging tests before leaving the factory. This aging heating process causes the wires to shrink prematurely, releasing stress and ensuring the stability of resistance and structural integrity during later use.

[0004] Existing aging tests mostly involve placing the coiled heating wire in a constant temperature chamber and heating it for an extended period to achieve a stable state. However, this method has several drawbacks. Firstly, the temperature distribution within the chamber is uneven, with varying ambient temperatures for the heating wires in different locations, leading to inconsistent aging results. Some heating wires may not age sufficiently, while others may suffer from over-aging, affecting their performance. Therefore, this invention provides an aging device for NTC heating wire production. Summary of the Invention

[0005] The present invention provides an aging device for the production of NTC heating wires to solve the problems mentioned in the background art.

[0006] The objective of this invention is achieved through the following means: The aging device used in the production of NTC heating wires includes: A heating module includes an insulated housing with an inlet and an outlet for the heating wire. The insulated housing is divided into a first working chamber and a second working chamber by a partition. The partition has a central channel through which the heating wire can pass. A first hot air module and a second hot air module are respectively disposed in the first and second working chambers. The guide module includes a drive module and several roller assemblies distributed in the insulation box. The drive module is used to drive the heating wire through the insulation box.

[0007] As a preferred embodiment of the aging device for NTC heating wire production, the first hot air module and the second hot air module are respectively disposed at the upper and lower ends of the insulation box. The output end and the input end of the first hot air module are respectively disposed in the first working chamber and the second working chamber. The output end and the input end of the second hot air module are respectively disposed in the second working chamber and the first working chamber. The output end of the first hot air module is disposed opposite to the input end of the second hot air module, and the output end of the second hot air module is disposed opposite to the input end of the first hot air module.

[0008] As a preferred embodiment of the aging device used in the production of NTC heating wires, both the first hot air module and the second hot air module include a fan, a heating element, an output cover, and an input cover. The input end of the fan is connected to the input cover via a first solenoid valve, and the output end of the fan is connected to the output cover. The input cover is provided with an exhaust pipe for communicating with the outside, and the exhaust pipe is provided with a second solenoid valve. The heating element is installed on the output cover.

[0009] As a preferred embodiment of the aging device used in the production of NTC heating wires, the input end of the fan is connected to an air filter box for connection to the outside via a third solenoid valve.

[0010] As a preferred embodiment of the aging device for the production of NTC heating wires, the output cover and the input cover are arranged side by side in the heat preservation box. In the horizontal first direction, the length of the output cover is greater than that of the input cover. A guide portion is provided in the middle of the partition, and the guide portion is inclined towards the output cover.

[0011] As a preferred embodiment of the aging device for the production of NTC heating wires, the roller assembly includes a rotating roller and a plurality of limiting rollers sequentially distributed on the rotating roller. The rotating roller is rotatably mounted on the insulation box, and the plurality of limiting rollers are slidably disposed on the rotating roller. The outer edge of the limiting roller is provided with a first groove for limiting the heating wire.

[0012] As a preferred embodiment of the aging device used in the production of NTC heating wires, a door frame is provided on one side of the insulation box, an insulated door is installed on the door frame via a hinge, and a sealing gasket is provided on the door frame for cooperating with the insulated door.

[0013] As a preferred embodiment of the aging device used in the production of NTC heating wires, both the inlet and outlet are equipped with guide components, the guide components are provided with guide channels, and one end of the guide channel is provided with a guide opening that expands outward.

[0014] As a preferred embodiment of the aging device for the production of NTC heating wires, the drive module includes a feeding component and a receiving component, which are respectively disposed at the wire inlet and the wire outlet. Both the feeding assembly and the receiving assembly include a drive shaft and an auxiliary roller. An auxiliary roller is slidably provided on the auxiliary roller, and a second groove for limiting the heating wire is provided on the outer edge of the auxiliary roller. The receiving assembly also includes a guide roller, which is mounted between the auxiliary roller and the drive shaft via a horizontal mover. The outer edge of the guide roller is provided with a third groove for limiting the heating wire. The horizontal mover is used to drive the guide roller to move along an axial direction horizontal to the drive shaft.

[0015] As a preferred embodiment of the aging device for the production of NTC heating wires, a locking component is installed on one side of the auxiliary roller via a drive cylinder. The locking component is provided with a U-shaped locking position for cooperating with the auxiliary roller. A limiting channel is formed between the U-shaped locking position and the auxiliary roller. A locking protrusion for cooperating with the second groove is provided in the middle of the U-shaped locking position.

[0016] This invention delivers NTC heating wires one by one into the insulation chamber, ensuring that NTC heating wires at different locations on the roll undergo aging treatment along the same path. This guarantees uniform heating for each section of the heating wire, effectively avoiding uneven aging caused by positional differences. Simultaneously, during the aging process, guided by the roller assembly, the heating space within the insulation chamber is fully utilized, and the NTC heating wires can bend along the roller assembly, releasing stress generated during the aging process and effectively preventing wire breakage or performance degradation due to stress concentration. Furthermore, the device uses a partition to separate the first and second hot air modules, allowing for the setting of aging temperatures in the first and second working chambers for different specifications of NTC heating wires. This further improves the consistency and stability of the aging effect, ensuring that every inch of heating wire completes the aging process along the preset path, thereby guaranteeing production efficiency and product quality. Attached Figure Description

[0017] Figure 1 This is a first structural schematic diagram of the aging device used in the production of NTC heating wires according to the present invention. Figure 2 for Figure 1 Enlarged diagram of A in the middle; Figure 3 This is a second structural schematic diagram of the aging device used in the production of NTC heating wires according to the present invention; Figure 4 This is a simplified schematic diagram of the heating module in this invention; Figure 5 This is a schematic diagram of the structure of the first hot air module in this invention; Figure 6 This is a schematic diagram of the structure of the second hot air module in this invention; Figure 7 This is a top view of the first hot air module in this invention; Figure 8 This is a cross-sectional view of the guide component in this invention; Figure 9 This is a front view of the aging device used in the production of NTC heating wires according to the present invention. Figure 10 This is a schematic diagram of the feeding assembly in this invention; Figure 11 This is a first structural schematic diagram of the receiving component in this invention; Figure 12 This is a schematic diagram of the second structure of the receiving component in this invention; Figure 13 This is a schematic diagram illustrating the use of the locking element in this invention.

[0018] The labels in the attached figures are as follows: 1-insulated box, 101-first working chamber, 102-second working chamber, 103-inlet, 104-outlet, 105-partition, 1051-central channel, 106-insulated door; 2-Roller assembly, 201-Rotating roller, 202-Limiting roller, 2021-First groove; 3-Guide component, 301-Guide channel, 302-Guide opening; 4-Feeding assembly, 5-Receiving assembly, 501-Guide roller, 502-Horizontal mover; 6-Drive shaft, 7-Auxiliary roller, 8-Auxiliary roller, 801-Second groove, 9-Locking component, 901-U-shaped locking position, 902-Limiting channel, 903-Locking protrusion; A10 - First hot air module, B10 - Second hot air module, 11 - First solenoid valve, 12 - Second solenoid valve, 13 - Third solenoid valve, 14 - Fan, 15 - Heating element, 16 - Output cover, 17 - Input cover, 18 - Exhaust pipe, 19 - Air filter box. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0024] In one embodiment of the present invention, such as Figure 1-4 As shown, the aging device for the production of NTC heating wires includes a heating module and a guiding module.

[0025] The heating module includes an insulation box 1, a first hot air module A10, and a second hot air module B10. The insulation box 1 has an inlet 103 and an outlet 104 at its two ends. The insulation box 1 is divided into a first working chamber 101 and a second working chamber 102 by a partition 105. The partition 105 has a central channel 1051 through which the heating wire can pass. The first hot air module A10 and the second hot air module B10 are respectively disposed in the first working chamber 101 and the second working chamber 102. The guiding module includes a driving module and several roller assemblies 2 distributed in the insulation box 1. The driving module is used to drive the heating wire through the insulation box 1.

[0026] This invention delivers NTC heating wires one by one into the insulation chamber 1, ensuring that NTC heating wires at different locations on the roll undergo aging treatment along the same path. This guarantees uniform heating for each section of the heating wire, effectively avoiding uneven aging caused by positional differences. Simultaneously, during the aging process, guided by the roller assembly 2, the heating space within the insulation chamber 1 is fully utilized, and the NTC heating wires can bend along the roller assembly 2, releasing stress generated during the aging heating process and effectively preventing wire breakage or performance degradation due to stress concentration. Furthermore, the device separates the first hot air module A10 and the second hot air module B10 via a partition 105, allowing for the setting of aging temperatures for the first working chamber 101 and the second working chamber 102 for different specifications of NTC heating wires. This further improves the consistency and stability of the aging effect, ensuring that every inch of heating wire completes the aging process along the preset path, thereby guaranteeing production efficiency and product quality.

[0027] The first hot air module A10 and the second hot air module B10 are respectively disposed at the upper and lower ends of the heat preservation box 1. The output end and the input end of the first hot air module A10 are respectively disposed in the first working chamber 101 and the second working chamber 102. The output end and the input end of the second hot air module B10 are respectively disposed in the second working chamber 102 and the first working chamber 101. The output end of the first hot air module A10 and the input end of the second hot air module B10 are disposed opposite to each other.

[0028] The first hot air module A10 and the second hot air module B10 are arranged opposite each other to form a hot air circulation system. The hot air blown downwards from the first hot air module A10 heats the heating wire in the first working chamber 101, and the remaining hot air flows directly into the input end of the second hot air module B10 at the lower end of the first working chamber 101. Conversely, the hot air blown upwards from the second hot air module B10 heats the heating wire in the second working chamber 102, and the remaining hot air flows directly into the input end of the first hot air module A10 at the upper end of the second working chamber 102. This cycle repeats continuously. This design not only improves the utilization rate of thermal energy and reduces heat loss, effectively reducing energy consumption, saving production costs, and improving economic efficiency, but also ensures a more uniform and stable temperature in the insulation chamber 1. This keeps the NTC heating wire within the set temperature environment during the aging process, guaranteeing consistent aging effects and product quality.

[0029] like Figure 2As shown, the roller assembly 2 includes a rotating roller 201 and a plurality of limiting rollers 202 sequentially distributed on the rotating roller 201. The rotating roller 201 is rotatably mounted on the insulation box 1, and the plurality of limiting rollers 202 are slidably disposed on the rotating roller 201. The outer edge of each limiting roller 202 is provided with a first groove 2021 for limiting the heating wire. In practical applications, this equipment can simultaneously perform aging treatment on multiple groups of NTC heating wires. The number of limiting rollers 202 on the rotating roller 201 directly depends on the number of groups of NTC heating wires that need to be aged simultaneously. Each limiting roller 202, through the first groove 2021 on its outer edge, precisely limits and guides one NTC heating wire, ensuring that the heating wire maintains a stable path during the aging process and does not deviate due to movement or vibration, thereby ensuring the consistency and stability of the aging treatment. Furthermore, the design of the limiting roller 202 being slidably mounted on the rotating roller 201 allows for flexible adjustment of the position of the limiting roller 202 according to different specifications or requirements of NTC heating wires, accommodating heating wires of different diameters or spacings, thus enhancing the versatility and flexibility of the equipment. This design not only improves production efficiency but also significantly enhances product quality, ensuring that each batch of NTC heating wires achieves the expected aging effect, meeting market and customer demands.

[0030] Furthermore, to ensure uniform heating of the heating wire, the outer edge of the limiting roller 202 is used to limit the first groove 2021 of the heating wire, which adopts a V-shaped groove design. The V-shaped groove design allows the heating wire to be naturally centered within the groove, ensuring that the heating wire always remains in the center position, thereby ensuring a uniform contact area between the heating wire and the hot air. This uniform contact allows the heating wire to be heated by the hot air from all directions during the aging process, avoiding differences in aging effects caused by uneven heating in certain areas. At the same time, the sloping sides of the V-shaped groove can guide the hot air to flow better towards the heating wire, further enhancing the heating effect and improving the efficiency of heat energy utilization. Moreover, when the heating wire undergoes slight dimensional changes due to thermal expansion and contraction during the aging process, the V-shaped groove can also provide a certain buffer space to prevent the heating wire from being damaged by excessive compression, ensuring the integrity and performance stability of the heating wire.

[0031] A door frame is provided on one side of the insulated box 1, and an insulated door 106 is installed on the door frame via hinges. A sealing gasket is provided on the door frame to cooperate with the insulated door 106. The design of the insulated door 106 not only facilitates maintenance and upkeep of the interior of the insulated box 1 by operators, but also effectively prevents external dust and impurities from entering the insulated box 1 when the equipment is not running, maintaining the cleanliness of the interior. The sealing gasket further enhances the sealing performance between the insulated door 106 and the door frame, avoiding heat loss due to hot air leakage during the aging process, and ensuring the stability and uniformity of the internal temperature of the insulated box 1. Simultaneously, an observation window (not shown) can be provided on the insulated door 106 according to actual needs, allowing real-time observation of the aging status of the NTC heating wires inside the insulated box 1 without opening the insulated door 106, improving the convenience and safety of production operations.

[0032] like Figure 5-7 As shown, both the first hot air module A10 and the second hot air module B10 include a fan 14, a heating element 15, an output cover 16, and an input cover 17. Both the output cover 16 and the input cover 17 are respectively provided with funnel-shaped structures that concentrate the hot air during output and input, reducing heat diffusion and loss, and further improving thermal efficiency. The fan 14, as the power source for hot air circulation, can stably provide the required airflow, ensuring continuous circulation of hot air within the insulation box 1. The heating element 15 is responsible for heating the air to the set temperature, providing the necessary heat for the aging process of the NTC heating wire. The heating element 15 can be a heating wire or other electric heating structure.

[0033] The input end of the fan 14 is connected to the input cover 17 via the first solenoid valve 11, and the output end of the fan 14 is connected to the output cover 16. The input cover 17 is provided with an exhaust pipe 18 for communicating with the outside, and the exhaust pipe 18 is provided with a second solenoid valve 12. The heating element 15 is installed on the output cover 16.

[0034] The input end of the fan 14 is connected to an air filter box 19 for external connection via a third solenoid valve 13. The air filter box 19 contains a high-efficiency filter screen, which effectively filters dust, impurities, and other fine particles from the air entering the insulation chamber 1, preventing these impurities from adhering to the NTC heating wire and affecting its aging performance and product quality. Simultaneously, the air filter box 19 ensures the cleanliness of the air entering the insulation chamber 1, providing a relatively pure aging environment for the NTC heating wire. When ventilation or internal pressure adjustment is required within the insulation chamber 1, this can be achieved by controlling the opening and closing of the first solenoid valve 11, the second solenoid valve 12, and the third solenoid valve 13. Specifically, during normal aging, the first solenoid valve 11 and the third solenoid valve 13 are open, and the second solenoid valve 12 is closed, allowing hot air to circulate within the insulation chamber 1. When ventilation is required, the second solenoid valve 12 is opened to expel some of the gas from the insulation chamber 1, while fresh air is introduced through the air filter box 19, ensuring the air quality within the insulation chamber 1. This flexible valve control method makes the operation of the entire aging device more convenient and allows for flexible adjustments based on actual production needs.

[0035] During the pre-production preparation stage, the first solenoid valve 11 is normally open, and the second solenoid valve 12 is normally closed. The fan 14 delivers air from the insulation box 1 to the output cover 16 through the input cover 17, whereby the air is heated by the heating element 15, thus generating hot air. During this process, the hot air from the first hot air module A10 and the second hot air module B10 circulates continuously, preheating the interior of the insulation box 1 so that the internal temperature gradually rises to the preset aging temperature range. Once the internal temperature of the insulation box 1 reaches the set value and stabilizes, the aging process for the NTC heating wire can begin.

[0036] After production is completed, when it is necessary to open the insulation door 106 to perform maintenance or other operations inside the insulation box 1, the first solenoid valve 11 and the heating element 15 are adjusted to the closed state, cutting off the connection between the fan 14 and the input hood 17. The second solenoid valve 12 and the third solenoid valve 13 are adjusted to the normally open state, allowing external cold air to be introduced to replace the hot air inside the insulation box 1. The hot air inside the insulation box can then be discharged to the outside through the exhaust pipe 18. This ends the hot air circulation of the first hot air module A10 and the second hot air module B10, quickly reducing the internal temperature of the insulation box 1 and providing suitable environmental conditions for subsequent maintenance or other operations, avoiding injury to operators due to high temperatures. Furthermore, this temperature regulation method is simple to operate; the switching between hot and cold air can be achieved by controlling the opening and closing of the solenoid valves, greatly improving the flexibility and safety of production operations.

[0037] The output cover 16 and the input cover 17 are arranged side by side inside the insulation box 1. Horizontally in the first direction, the length of the output cover 16 is greater than that of the input cover 17, thereby accommodating a larger heating element 15 to improve hot air generation efficiency and ensure that the insulation box 1 can quickly reach and maintain the required aging temperature. Simultaneously, a guide portion is provided in the middle of the partition 105, which is inclined towards the output cover 16. This inclined design can concentrate hot air, improving the heating efficiency for the wires, and simultaneously guide the remaining hot air towards the input end of the fan 14, thereby improving the circulation efficiency of the first hot air module A10 and the second hot air module B10.

[0038] like Figure 8 As shown, both the inlet 103 and outlet 104 are equipped with guide members 3. The guide members 3 have guide channels 301, the diameter of which is typically slightly larger than or equal to the diameter of the heating wire. This reduces hot air loss and further improves the sealing of the insulation box 1, ensuring that hot air does not escape in large quantities when the NTC heating wire enters or exits the insulation box 1, thus maintaining a stable temperature inside the box and providing a continuous and stable high-temperature environment for the aging process of the NTC heating wire. Simultaneously, the diameter of the guide channel 301 also takes into account the dimensional changes that the heating wire may undergo during the aging process due to thermal expansion and contraction, ensuring that the heating wire can always pass smoothly through the guide channel 301 without being obstructed by dimensional changes.

[0039] One end of the guide channel 301 is provided with an outwardly expanding guide opening 302. The guide opening 302 adopts an outwardly expanding flared design, which allows the heating wire to enter or leave the guide channel 301 more smoothly and effectively avoids wire damage caused by friction between the heating wire and the edge of the guide channel 301. This design not only improves the safety of the heating wire during the process of entering and leaving the insulation box 1, but also further ensures the stability of the temperature inside the insulation box 1.

[0040] like Figure 9 As shown, the drive module includes a feeding component 4 and a receiving component 5, which are respectively disposed at the inlet 103 and the outlet 104. like Figure 10-12 As shown, both the feeding assembly 4 and the receiving assembly 5 include a drive shaft 6 and an auxiliary roller 7. An auxiliary roller 8 is slidably provided on the auxiliary roller 7, and a second groove 801 for limiting the heating wire is provided on the outer edge of the auxiliary roller 8. In this embodiment, the drive shaft 6 of the feeding assembly 4 is used to place the heating wire roll to be unwound (i.e., the heating wire that has not undergone aging treatment), while the drive shaft 6 of the receiving assembly 5 is used to receive the heating wire to be rewound (i.e., the heating wire that has undergone aging treatment). The auxiliary roller 7 and its auxiliary rollers 8 are used to assist in guiding the NTC heating wire to smoothly enter or leave the insulation box 1. In this embodiment, the drive shaft 6 is driven to rotate by a corresponding servo motor.

[0041] In the feeding assembly 4, the drive shaft 6 drives the heating wire coil to rotate. The heating wire passes sequentially through the auxiliary roller 8, the feeding port, and several roller assemblies 2, and is then led out through the discharge port. After passing through the auxiliary roller 8 of the take-up assembly 5, it is finally wound onto the drive wheel of the take-up assembly 5. During this traction process, the drive shaft 6 of the take-up assembly 5 plays the main traction role, while the drive shaft 6 of the feeding assembly 4 plays an auxiliary wire feeding role. The two work together to ensure that the heating wire can undergo aging treatment in the insulation box 1 at a stable speed and tension. The high-precision control characteristics of the servo motor allow the rotation speed and direction of the drive shaft 6 to be precisely adjusted according to actual production needs. For example, when it is necessary to speed up the aging process, the speed of the servo motor can be appropriately increased, thereby speeding up the movement of the heating wire in the insulation box 1; conversely, when more precise control of the aging process is required, the speed of the servo motor can be reduced, allowing the heating wire to stay in the insulation box 1 for a longer time and be fully heated. Therefore, by adjusting the rotational speed of the drive shaft 6 of the feeding assembly 4 and the receiving assembly 5, the tension and moving speed of the heating wire during the traction process can be adjusted.

[0042] The auxiliary roller 8 is slidably mounted on the auxiliary roller 7. This design allows the position of the auxiliary roller 8 to be flexibly adjusted according to the specifications and location of the heating wire. When handling heating wires of different diameters, the operator can slide the auxiliary roller 8 to precisely align the second groove 801 on its outer edge with the heating wire, ensuring that the heating wire maintains a stable path when entering and leaving the insulation chamber 1, preventing deviation or shaking due to improper positioning of the auxiliary roller 8. Furthermore, the second groove 801 on the outer edge of the auxiliary roller 8 also adopts a V-shaped design. Its function is similar to the first groove 2021 of the upper limit roller 202 of the roller assembly 2, allowing the heating wire to be naturally centered within the groove, ensuring a uniform contact area between the heating wire and the hot air, and improving the aging treatment effect. Moreover, this V-shaped groove design can also, to a certain extent, accommodate the thermal expansion and contraction of the heating wire during the aging process, preventing the heating wire from being excessively squeezed or damaged due to dimensional changes.

[0043] like Figure 11-12As shown, the take-up assembly 5 also includes a guide roller 501. The guide roller 501 is mounted between the auxiliary roller 7 and the drive shaft 6 via a horizontal mover 502. The outer edge of the guide roller 501 is provided with a third groove for limiting the heating wire. The horizontal mover 502 is used to drive the guide roller 501 to move along an axial direction horizontal to the drive shaft 6. During the take-up process, the guide roller 501 precisely guides the aged heating wire through the third groove on its outer edge, ensuring that it is smoothly and orderly wound onto the take-up coil of the drive shaft 6 of the take-up assembly 5. This avoids problems such as misalignment, overlap, or loose winding of the heating wire during the winding process, thereby ensuring the quality and efficiency of the take-up. The horizontal mover 502 is a commonly used lead screw motor module in this field.

[0044] like Figure 13 A locking element 9 is mounted on one side of the auxiliary roller 8 via a drive cylinder. The locking element 9 has a U-shaped locking position 901 for engaging with the auxiliary roller 8, forming a limiting channel 902 between the U-shaped locking position 901 and the auxiliary roller 8. A locking protrusion 903 is provided in the middle of the U-shaped locking position 901 for engaging with the second groove 801. To avoid being affected by the movement and traction of the guide roller 501, a limiting channel 902 is formed between the U-shaped locking position 901 and the auxiliary roller 8 during actual production, thereby preventing the heating wire from detaching from the guide of the auxiliary roller 8. Furthermore, during loading and unloading, the locking element 9 can be moved closer to the auxiliary roller 8 by the drive cylinder to temporarily lock the heating wire, thus safely completing the loading and unloading operation of the heating wire.

[0045] In actual production, operators can adjust the positions of the auxiliary rollers 8 of the feeding assembly 4 and the receiving assembly 5, as well as the rotation speed of the drive shaft 6, in advance according to the production plan and the specifications of the heating wire. During the initial production, the heating wire needs to be manually pulled and laid out along the corresponding path. In subsequent production, simply start the servo motor, and the drive shaft 6 of the feeding assembly 4 will drive the heating wire coil to rotate at a uniform speed. Subsequently, the heating wire, guided by the auxiliary rollers 8, smoothly enters the insulation box 1 through the feeding port.

[0046] Subsequently, during the feeding and rewinding process, the drive shafts 6 at both ends stop moving synchronously, and the locking pieces 9 at both ends temporarily lock this section of heating wire. Then, the empty coil on the drive shaft 6 of the feeding assembly 4 is removed, and a new coil of heating wire awaiting aging is added. At the same time, adhesive tape or other structures are used to temporarily connect the head of the new heating wire to the tail of the old heating wire. Then, the locking pieces 9 are released, and the drive shaft 6 is started to restart the aging process. During the unloading and rewinding process, the locking operation is repeated, and the temporary head-to-tail connection structure of the heating wire is removed. Then, the coiled wire on the drive shaft 6 of the take-up assembly 5 is replaced, thus completing the feeding and unloading operations.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. An aging device for the production of NTC heating wires, characterized in that, include: A heating module includes an insulation box (1) with an inlet (103) and an outlet (104). The insulation box (1) is divided into a first working chamber (101) and a second working chamber (102) by a partition (105). A central channel (1051) through which the heating wire can pass is provided on the partition (105). A first hot air module (A10) and a second hot air module (B10) are respectively provided in the first working chamber (101) and the second working chamber (102). The guide module includes a drive module and several roller assemblies (2) distributed in the heat preservation box (1). The drive module is used to drive the heating wire through the heat preservation box (1). The first hot air module (A10) and the second hot air module (B10) are respectively disposed at the upper and lower ends of the heat preservation box (1), and the output end and input end of the first hot air module (A10) are respectively disposed in the first working chamber (101) and the second working chamber (102). The output and input ends of the second hot air module (B10) are respectively located in the second working chamber (102) and the first working chamber (101). The output terminal of the first hot air module (A10) is positioned opposite to the input terminal of the second hot air module (B10), and the output terminal of the second hot air module (B10) is positioned opposite to the input terminal of the first hot air module (A10).

2. The aging device for NTC heating wire production according to claim 1, characterized in that: The first hot air module (A10) and the second hot air module (B10) each include a fan (14), a heating element (15), an output cover (16) and an input cover (17). The input end of the fan (14) is connected to the input cover (17) through the first solenoid valve (11), and the output end of the fan (14) is connected to the output cover (16). The input cover (17) is provided with an exhaust pipe (18) for communicating with the outside. The exhaust pipe (18) is provided with a second solenoid valve (12). The heating element (15) is installed on the output cover (16).

3. The aging device for NTC heating wire production according to claim 2, characterized in that: The input end of the fan (14) is connected to an air filter box (19) for connecting to the outside via a third solenoid valve (13).

4. The aging device for NTC heating wire production according to claim 2, characterized in that: The output cover (16) and the input cover (17) are arranged side by side in the heat preservation box (1). In the horizontal first direction, the length of the output cover (16) is greater than that of the input cover (17). The middle part of the partition (105) is provided with a guide part, which is inclined towards the output cover (16).

5. The aging device for NTC heating wire production according to claim 1, characterized in that: The roller assembly (2) includes a rotating roller (201) and a plurality of limiting rollers (202) sequentially distributed on the rotating roller (201). The rotating roller (201) is rotatably mounted on the heat preservation box (1), and the plurality of limiting rollers (202) are slidably disposed on the rotating roller (201). The outer edge of the limiting roller (202) is provided with a first groove (2021) for limiting the heating wire.

6. The aging device for NTC heating wire production according to claim 5, characterized in that: A door frame is provided on one side of the insulated box (1), and an insulated door (106) is installed on the door frame by a hinge. A sealing gasket is provided on the door frame for cooperating with the insulated door (106).

7. The aging device for NTC heating wire production according to claim 5, characterized in that: The inlet (103) and outlet (104) are each equipped with a guide (3), and the guide (3) is provided with a guide channel (301). One end of the guide channel (301) is provided with a guide opening (302) that expands outward.

8. The aging device for NTC heating wire production according to claim 1, characterized in that: The drive module includes a feeding component (4) and a receiving component (5), which are respectively located at the inlet (103) and the outlet (104). Both the feeding assembly (4) and the receiving assembly (5) include a drive shaft (6) and an auxiliary roller (7). An auxiliary roller (8) is slidably provided on the auxiliary roller (7), and a second groove (801) for limiting the heating wire is provided on the outer edge of the auxiliary roller (8). The receiving assembly (5) also includes a guide roller (501), which is mounted between the auxiliary roller (7) and the drive shaft (6) via a horizontal mover (502). The outer edge of the guide roller (501) is provided with a third groove for limiting the heating wire. The horizontal mover (502) is used to drive the guide roller (501) to move along the axial direction horizontal to the drive shaft (6).

9. The aging device for NTC heating wire production according to claim 8, characterized in that: A locking member (9) is installed on one side of the auxiliary roller (8) via a drive cylinder. The locking member (9) is provided with a U-shaped locking position (901) for cooperating with the auxiliary roller (8). A limiting channel (902) is formed between the U-shaped locking position (901) and the auxiliary roller (8). A locking protrusion (903) for cooperating with the second groove (801) is provided in the middle of the U-shaped locking position (901).

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