A glass fiber sheathing production process and its production equipment

Abstract

The application discloses a glass silk covered wire production process and a production equipment thereof, and aims to improve production efficiency and reduce harmful gas emission. The process adopts photocuring insulating paint and photocuring technology, improves the paint permeability through vacuum negative pressure pretreatment, and avoids the uneven adhesion problem of the traditional paint dipping process. The equipment comprises a pay-off rack, a winding device, a paint dipping device, a curing device and a winding device, wherein the curing device combines ultraviolet light and infrared light, performs deep curing and then performs surface curing, and introduces ultrasonic vibration to promote paint permeability and curing. Compared with the traditional heat curing mode, the application has low energy consumption, uniform curing, improved insulation performance and mechanical strength of the glass silk covered wire, reduced harmful gas emission, and realizes green and environment-friendly production.

Description

Technical Field

[0001] This invention relates to the field of glass fiber overlay production technology, and in particular to a glass fiber overlay production process and its production equipment. Background Technology

[0002] Glass fiber insulated wire is a type of conductor that uses glass fiber as its insulation layer. Typically, glass fiber is wound around the outer wall of the conductor, then impregnated with insulating varnish and baked, bonding the glass fibers together as a single unit, both between the fibers and between the fibers and the conductor. It possesses excellent electrical insulation properties as well as good heat and cold resistance, making it widely used in fields such as motors and transformers.

[0003] The current production of glass fiber-insulated wire mainly involves placing a pre-treated conductor, such as copper round wire, onto a winding machine. Through the rotation and traction device of the winding machine, glass fiber is evenly wrapped around the surface of the conductor to obtain a glass fiber-insulated wire blank. Then, the glass fiber-insulated wire blank is sent to an impregnation device and a baking device in sequence through a traction conveyor to complete the impregnation and baking processes, and finally obtain the finished glass fiber-insulated wire.

[0004] However, because existing glass fiber-insulated wires have a wrapping structure around the conductor, the dense glass fibers after wrapping can block light penetration, which can easily lead to incomplete curing of the inner enamel layer and affect the quality of the insulated wire. Therefore, traditional hot melt type thermosetting insulating varnish is used in traditional production processes, which requires a long baking time to complete the curing process. This seriously reduces the production efficiency of glass fiber-insulated wires. Furthermore, if thermosetting insulating varnish is used, a large amount of harmful gases such as benzene or ether will be generated during the baking process, causing environmental pollution. Summary of the Invention

[0005] The main objective of this invention is to provide a glass fiber insulated wire production process that aims to improve the production efficiency of glass fiber insulated wire while reducing pollution caused by a large amount of harmful gases generated during the production process through photocuring insulating varnish and photocuring process; and to provide a glass fiber insulated wire production equipment that can improve the efficiency and quality of glass fiber insulated wire impregnation and curing, thereby improving the production quality of glass fiber insulated wire.

[0006] To achieve the above objectives, the present invention proposes a glass fiber sheathing production equipment, comprising a control component and a wire feeding frame (100), a winding device (200), an impregnation device (300), and a winding device (500) arranged sequentially along the sheathing conveying direction. The impregnation device (300) includes a mounting bracket (1) and an impregnation component (2) disposed on the mounting bracket (1). The impregnation component (2) stores a light-curing insulating varnish inside and is used to impregnate the sheathing wire with the light-curing insulating varnish. The device also includes a curing device (400) disposed between the impregnation device (300) and the winding device (500). The curing device (400) includes an ultraviolet light module and an infrared light module arranged sequentially along the sheathing conveying direction. The ultraviolet light module is used to perform deep curing of the sheathing wire impregnated with insulating varnish, and the infrared light module is used to cure the surface of the sheathing wire impregnated with insulating varnish.

[0007] The curing device (400) includes a support frame (4), on which a curing cylinder (6) is rotatably mounted. The curing cylinder (6) has a central channel (60) for the packaging wire to pass through. The ultraviolet light module and the infrared light module are disposed on the inner circumference of the central channel (60). The device also includes a drive assembly (9) disposed in the housing (5) and connected to the curing cylinder (6). The drive assembly (9) is used to drive the curing cylinder (6) to drive the ultraviolet light module and the infrared light module to reciprocate in a circular motion around the central axis of the central channel (60).

[0008] The curing cylinder (6) is provided in two parts, namely a deep curing cylinder (61) and a surface strengthening cylinder. The ultraviolet light module is provided in the deep curing cylinder (61) and the infrared light module is provided in the surface strengthening cylinder.

[0009] The deep curing cylinder (61) includes a pre-curing section (610) and a transition section (611). A partition plate (613) is provided between the pre-curing section (610) and the transition section (611). The partition plate (613) is provided with a material hole located at the central channel (60). The ultraviolet light module includes an ultraviolet A lamp group (70) located in the pre-curing section (610) and a composite lamp group located in the transition section (611) and composed of ultraviolet A lamp group (70) and ultraviolet B lamp group (71). The ultraviolet A lamp group (70) and ultraviolet B lamp group (71) located in the transition section (611) are arranged alternately and connected to a control board connected to the control component. The control board controls the ultraviolet A lamp group (70) and ultraviolet B lamp group (71) to start alternately.

[0010] In one possible implementation, the curing cylinder includes a mounting cylinder rotatably disposed within a housing and connected to a drive assembly. A light-transmitting cylinder made of transparent material is fitted inside the mounting cylinder, and a heat dissipation cavity is formed between the light-transmitting cylinder and the mounting cylinder. The ultraviolet light module and the infrared light module are respectively fixedly disposed within the heat dissipation cavity corresponding to the curing cylinder.

[0011] In one possible implementation, the heat dissipation cavity is further provided with ultrasonic transducers located at the pre-curing section and the transition section respectively and connected to the control component. The ultrasonic transducers are used to perform ultrasonic vibration on the envelope.

[0012] In one possible implementation, the impregnation assembly includes an impregnation tank mounted on a mounting bracket, an impregnation chamber connected to a paint supply assembly within the impregnation tank, the impregnation chamber storing UV-cured insulating varnish, and holes at both ends of the impregnation chamber for material passage; it also includes a vacuum chamber located within the impregnation tank and near the winding device end of the impregnation chamber, the vacuum chamber being connected to a negative pressure pump, and inlet and outlet ports at both ends of the vacuum chamber, the outlet port communicating with a material outlet at one end of the impregnation chamber, and a sealing structure provided at the inlet and outlet ports, the sealing structure being used to seal the gap between the winding coil and the two material outlets to prevent external fluid from flowing into the vacuum chamber.

[0013] The present invention also provides a glass fiber overlay production process, which is carried out using the aforementioned glass fiber overlay production equipment, and the steps are as follows:

[0014] S1. Raw material preparation: Prepare clean copper wire coils free of oxide layer and impurities, and place them on the wire feeding frame. Place the prepared glass fiber on the winding device. At the same time, prepare light-curing insulating varnish and add it into the impregnation device.

[0015] S2, Glass fiber wrapping: The copper wire is fed into the winding device, and then the winding device is started. The glass fiber is wrapped around the surface of the copper wire to obtain the wire wrapping blank.

[0016] S3, Impregnation: The wire blank obtained in S2 is transported to the impregnation device to complete the impregnation, and a wire blank is obtained that is fully impregnated with light-cured insulating varnish.

[0017] S4. Curing: The wire blank that has been impregnated in S3 will be transported to the curing device. Then it will first pass through the ultraviolet light module to complete the deep curing of the wire blank, and then pass through the infrared light module to complete the surface curing of the wire blank, finally obtaining the finished glass wire.

[0018] S5. Winding: The glass fiber wrapped wire cured by S4 is wound up using a winding device.

[0019] In one possible implementation,

[0020] The specific steps for the S3 impregnation process are as follows:

[0021] A1. Vacuum treatment: First, the wire blank in S2 will enter the vacuum chamber. At this time, the vacuum chamber is under negative pressure. In the negative pressure environment, the air between the fibers of the wire blank will be expelled, thus completing the vacuum treatment.

[0022] A2. Impregnation treatment: After step A1, the wire blank material that has undergone vacuum treatment will directly enter the impregnation chamber through the sealed structure at the outlet. The impregnation chamber is under normal pressure. At this time, the light-cured insulating varnish in the impregnation chamber will penetrate into the fiber gaps of the wire blank material under the action of pressure difference, thus completing the impregnation process.

[0023] The curing steps for S4 are as follows:

[0024] B1. First, the wire blank after being impregnated by A2 will enter the pre-curing section. At this time, the UV-A lamp group in the pre-curing section will release UV-A light to irradiate the wire blank for 2 seconds to complete deep curing. At the same time, the ultrasonic transducer will be activated, releasing ultrasonic waves with an ultrasonic frequency of 20 kHz and an amplitude of 8 μm through the air medium to ultrasonically vibrate the paint liquid in the wire blank.

[0025] B2. After deep curing in B1, the wire blank will enter the transition section. Then, the UV A lamp group and UV B lamp group in the transition section will alternately irradiate the wire blank for 1.5 seconds to complete the synchronous curing of the surface and the deep layer. At the same time, the ultrasonic transducer will release ultrasonic waves with an ultrasonic frequency of 15 kHz and an amplitude of 5 μm to vibrate the wire blank.

[0026] B3. Finally, the wire blank after step B2 will enter the surface strengthening cylinder, where the infrared light module will release infrared light radiation to the wire blank for 2.5 seconds to solidify the surface of the wire blank and obtain the finished glass fiber wire.

[0027] In one possible embodiment, the raw materials of the photocurable insulating varnish, calculated by mass percentage, are as follows: 55-65% epoxy acrylate, 15-20% tripropylene glycol diacrylate, 5-8% polyurethane acrylate, 3-5% surface-modified silica, 0.5-1% dispersant, 2-3.5% photoinitiator, 0.3-0.5% polyether-modified siloxane, 0.1-0.3% defoamer, 0.2-0.4% 2,6-di-tert-butyl-p-cresol, and 3-4.5% adaptive microcapsules; wherein the adaptive microcapsules are composed of an imidazole latent curing agent as the core material and urea-formaldehyde resin as the shell material.

[0028] In summary, the beneficial effects of the present invention are as follows:

[0029] Compared with existing technologies, this invention employs vacuum negative pressure pretreatment technology in the impregnation process. First, the glass fiber-insulated wire blank is subjected to negative pressure treatment, expelling air between the glass fibers and creating a larger internal penetration space. Subsequently, the UV-cured insulating varnish rapidly penetrates into the gaps between the glass fibers under the pressure difference, achieving a more uniform impregnation effect. This method avoids the uneven varnish adhesion problem caused by residual air in traditional impregnation processes, thus improving the insulation performance and durability of the glass fiber-insulated wire.

[0030] During the curing process, this invention employs a dual curing technology combining ultraviolet and infrared light. First, a deep curing module is used for ultraviolet light curing, followed by surface curing using an infrared light module. This method solves the problem of incomplete curing within the paint layer in traditional thermosetting methods, resulting in more uniform curing of the glass fiber wire wrapping and thus improving the mechanical strength and electrical insulation properties of the finished product. Furthermore, an ultrasonic transducer is introduced during the curing process, causing the wire wrapping to vibrate at high frequencies, further promoting the penetration and curing of the paint, making the paint layer denser and more firmly adhered, and reducing the risk of paint layer cracking.

[0031] Furthermore, the nano-silica added to the UV-curable insulating varnish formula reduces light scattering and enhances UV penetration depth. The adaptive microcapsules added therein work synergistically with UV-A light and 20kHz ultrasound within the deep curing cylinder. UV-A light penetrates the glass fiber layer to excite the cross-linking reaction of the deep photoinitiator, while ultrasonic vibration promotes varnish flow and microcapsule release through cavitation effect. This allows imidazole curing agents to supplement cross-linking in areas that are not fully cured, releasing latent curing agents and further ensuring the deep curing effect. This ensures complete curing inside the glass fiber sheath and solves the problem in existing technologies where the wrapping structure outside the conductor affects light penetration, leading to incomplete curing of the varnish inside the sheath.

[0032] Compared to traditional thermosetting processes, the photocurable insulating varnish used in this invention can rapidly cure under ultraviolet light irradiation, eliminating the need for prolonged high-temperature baking, significantly shortening the production cycle and improving production efficiency. Furthermore, because this invention avoids the reliance on high-temperature equipment inherent in traditional thermosetting processes, energy consumption is lower. In addition, traditional thermosetting processes release large amounts of harmful gases such as benzene and ethers during high-temperature baking, while the photocuring process of this invention directly completes the polymerization reaction through the action of a photoinitiator, fundamentally reducing the emission of harmful gases and making the production process more environmentally friendly. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a diagram of the production equipment according to Embodiment 1 of the present invention;

[0035] Figure 2 This is a structural diagram of the impregnation apparatus according to Embodiment 1 of the present invention;

[0036] Figure 3 for Figure 2 Enlarged view at point A;

[0037] Figure 4 This is a front view of the coating impregnation apparatus of the present invention;

[0038] Figure 5 This is a three-dimensional structural diagram of the vacuum chamber according to Embodiment 1 of the present invention;

[0039] Figure 6 This is a schematic diagram of the vacuum chamber sealing structure of the present invention;

[0040] Figure 7 This is a structural diagram of the curing device according to Embodiment 1 of the present invention;

[0041] Figure 8 This is a diagram showing the internal structure of the curing device according to Embodiment 1 of the present invention;

[0042] Figure 9 for Figure 8 Enlarged view at point B;

[0043] Figure 10 This is an internal structural diagram of the deep curing cylinder according to Embodiment 1 of the present invention;

[0044] Figure 11 for Figure 10 Enlarged view of the transition section at point C;

[0045] Figure 12 This is a structural diagram of the internal structure of the surface reinforcement cylinder according to Embodiment 1 of the present invention.

[0046] Explanation of icon numbers:

[0047] 100. Pay-off frame; 200. Winding device; 300. Impregnation device; 400. Curing device; 500. Rewinding device; 600. Conveying mechanism; 1. Mounting bracket; 2. Impregnation assembly; 20. Impregnation tank; 21. Vacuum chamber; 212. Negative pressure pump; 213. Buffer pipe; 214. Rubber sleeve; 215. Deformation part; 216. Pore; 22. Impregnation chamber; 23. Roller assembly; 24. Wool felt block; 25. Liquid supply pipe; 26. Liquid return pipe; 27. Liquid pump; 28. Liquid storage tank;

[0048] 3. Equipment box; 4. Support frame; 5. Shell; 6. Curing cylinder; 60. Central channel; 61. Deep curing cylinder; 610. Pre-curing section; 611. Transition section; 613. Partition plate; 62. Surface strengthening cylinder; 63. Mounting cylinder; 64. Light transmission cylinder; 65. Heat dissipation cavity; 7. Ultraviolet light module; 70. Ultraviolet A lamp group; 71. Ultraviolet B lamp group; 8. Infrared light module;

[0049] 9. Drive assembly; 91. Drive shaft; 92. Transmission gear; 93. Drive gear; 94. Motor; 10. Control panel; 11. Electrical box; 12. Circuit board; 13. Wiring hole; 14. Aluminum film; 15. Ultrasonic transducer. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0051] Example 1

[0052] See attached document Figure 1-12 This embodiment discloses a glass fiber sheathing production equipment, including a control component and a wire feeding frame 100, a winding device 200, an impregnation device 300, a curing device 400, and a winding device 500 arranged sequentially along the wire feeding direction; wherein, the wire feeding frame 100, the winding device 200, and the winding device 500 are all prior art, and therefore will not be described in detail in this embodiment.

[0053] Specifically, the pay-off frame 100 serves to support the conductor and is equipped with a tension sensor above it to monitor the conductor feed speed in real time, thereby ensuring stable conveying. A conveying mechanism 600 is also provided between the various devices. The conveying mechanism 600 uses upper and lower sets of conveying rollers to achieve timely conveying of the conductor and the winding coil. Through the conveying mechanism 600, the conductor is first conveyed from the pay-off frame 100 to the winding device 200. The winding device 200 is used to wind the glass filament around the surface of the conductor to form a winding structure. The winding device 200 can refer to the glass filament winding deflection method disclosed in Chinese Invention Patent No. CN101770838B. The core-type winding mechanism: After the wire is wound, the conveying mechanism 600 transports it to the impregnation device 300 and the curing device 400 for impregnation and curing respectively, and finally sends it to the winding device 500 for winding. The winding device 500 is a winding roller controlled by a motor 94, which can wind the wire. Between the winding device 500 and the curing device 400, in order to avoid the residual heat in the glass fiber wrapped wire after curing affecting the quality of the insulating varnish, an air cooling system can be set up. The air cooling system uses a centrifugal fan, which can cool the glass fiber wrapped wire coming out of the curing device 400 through the air duct, thereby achieving rapid cooling of the glass fiber wrapped wire after curing.

[0054] And such Figure 2-6 As shown, the impregnation device 300 includes a mounting bracket 1 and an impregnation assembly 2 disposed on the mounting bracket 1. The control module for controlling the impregnation device 300 is disposed in the equipment box 3 on the mounting bracket 1 and is connected to the impregnation assembly 2, which can realize the control of data such as paint liquid delivery in the impregnation assembly 2.

[0055] And such Figure 2 As shown, the impregnation assembly 2 includes an impregnation tank 20 mounted on the mounting bracket 1. Inside the impregnation tank 20, along the wire conveying direction, there are sequentially arranged a vacuum chamber 21 for vacuuming the wire blank and multiple impregnation chambers 22 connected to the vacuum chamber 21. At the same time, multiple sets of rolling roller assemblies 23 are also arranged inside the impregnation tank 20, which can restrict the position of the wire and scrape off the excess paint on the surface of the wire after impregnation.

[0056] Specifically, such as Figure 2-4As shown, the impregnation chamber 22 is fixed in the impregnation tank 20, and wool felt blocks 24 are provided at both ends of the chamber. Holes are made on the wool felt blocks 24 to allow the common coil to pass through. The wool felt blocks 24 can seal and store the insulating varnish in the impregnation chamber 22. At the same time, the insulating varnish can flow into the impregnation tank 20 through the holes on the wool felt blocks. A liquid storage tank 28 is also provided on the mounting bracket 1. The liquid storage tank 28 is connected to the impregnation tank 20 through the return liquid pipe 26 and to multiple impregnation chambers 22 through the supply liquid pipe 25. At the same time, the supply liquid pipe 25 is connected to the liquid storage tank. A liquid pump 27 is also installed between tanks 28. During operation, the insulating varnish in the storage tank 28 is first pumped into the impregnation chamber 22 through the supply pipe 25 by the liquid pump 27, so that the impregnation chamber 22 is filled with insulating varnish. As the amount of insulating varnish increases, the excess varnish will flow through the holes on the wool felt block 24 into the impregnation tank 20. The varnish in the impregnation tank 20 will then return to the storage tank 28 through the return pipe, thus realizing the circulation of the insulating varnish. This ensures that the varnish in the impregnation chamber 22 is uniform and ensures a better impregnation effect.

[0057] To further improve the speed and effectiveness of the paint impregnation of the wire, a vacuum chamber 21 is installed inside the impregnation tank 20, such as... Figure 3 , 5 As shown, the vacuum chamber 21 has an inlet and an outlet at both ends, both equipped with sealing structures. These sealing structures improve the airtightness of the vacuum chamber 21 and prevent external varnish from entering. A negative pressure pump 212 is also connected inside the vacuum chamber 21. When the negative pressure pump 212 operates, the vacuum chamber 21 is under negative pressure. Under this negative pressure, the air between the fibers of the wire entering the vacuum chamber 21 is expelled, and the wire directly enters the impregnation chamber 22 under normal pressure. There, the varnish in the impregnation chamber 22 rapidly penetrates the fibers of the wire under the pressure difference, ensuring that the insulating varnish is evenly filled into the fiber structure, improving the penetration and impregnation effect and quality. Simultaneously, as... Figure 3 As shown, a buffer pipe 213 is also provided between the vacuum chamber 21 and the impregnation chamber 22. The insulating varnish in the impregnation chamber 22 will first fill the buffer pipe 213 and then flow to the impregnation tank 20. The insulating varnish in the buffer pipe 213 is less and the pressure is lower, which can prevent the high-pressure varnish in the impregnation chamber 22 from impacting the wire, thereby allowing the wire to achieve pre-impregnation adaptation.

[0058] And such Figure 5 As shown, the sealing structure includes a sealing head with threads at both ends of the material inlet. The sealing head is made of a rubber sleeve 214. The rubber sleeve 214 extends away from the end of the vacuum chamber 21, and its head is conical. It has outwardly protruding deformation parts 215 on both sides. At the same time, a hole 216 corresponding to the shape of the wrapping wire is provided in the center of the rubber sleeve 214, which allows the wrapping wire to pass through.

[0059] The threaded rubber sleeve 214 allows users to replace different specifications of sleeves by disassembling and assembling the rubber sleeve 214, so that the aperture 216 can be adjusted and replaced according to the model and specifications of the wire.

[0060] The deformation section 215 allows the rubber sleeve 214 to deform and fit more easily. When the vacuum chamber 21 is under negative pressure, the air pressure inside the sleeve is lower than the external air pressure. Therefore, the external pressure will cause the sleeve to fit together along the deformation section 215, thus sealing the pore 216. At the same time, the rubber sleeve 214 located in the buffer pipe 213 is further squeezed by the pressure of the insulating varnish liquid outside the sleeve due to the presence of liquid outside, thereby preventing liquid from entering the vacuum chamber 21 and achieving a sealing effect.

[0061] The rolling roller assembly 23 installed in the impregnation box 20 is provided in several groups. The rolling roller assembly 23 is composed of upper and lower rolling rollers or left and right rolling rollers. The upper and lower rolling roller assembly 23 can restrict the movement of the wrapping wire in the vertical direction, while the left and right rolling roller assembly 23 can restrict the movement of the wrapping wire in the horizontal direction, thereby realizing the determination of the position of the wrapping wire.

[0062] like Figure 7-12 As shown, after the wire is impregnated by the impregnation device 300, it is conveyed to the curing device 400 for curing. The curing device 400 includes an ultraviolet light module and an infrared light module arranged sequentially along the wire conveying direction. The ultraviolet light module is used to deeply cure the wire impregnated with insulating varnish, and the infrared light module is used to cure the surface of the wire impregnated with insulating varnish.

[0063] like Figure 7 As shown, the curing device 400 includes a support frame 4, a housing 5 mounted on the support frame 4, a curing cylinder 6 rotatably mounted inside the housing 5, and a central channel 60 for the packaging wire to pass through the curing cylinder 6. An ultraviolet light module and an infrared light module are mounted on the inner circumference of the central channel 60. The device also includes a drive assembly 9 mounted inside the housing 5 and connected to the curing cylinder 6. The drive assembly 9 drives the curing cylinder 6 to move the ultraviolet light module and the infrared light module in a reciprocating circular motion around the central axis of the central channel 60. Simultaneously, the drive assembly 9, the ultraviolet light module, and the infrared light module are all connected to a control assembly, which consists of a control panel 10 and an electrical box 11, enabling the setting of data for the curing device 400.

[0064] Specifically, there are two curing cylinders 6, which are respectively installed in two housings 5. They are arranged sequentially as a deep curing cylinder 61 and a surface strengthening cylinder along the envelope conveying direction. The ultraviolet light module is installed in the deep curing cylinder 61 and the infrared light module is installed in the surface strengthening cylinder.

[0065] And such Figure 8 As shown, both curing cylinders 6 include a mounting cylinder 63 rotatably disposed within the housing 5 and connected to the drive assembly 9. A transparent light-transmitting cylinder 64 is sleeved inside the mounting cylinder 63, and a heat dissipation cavity 65 is formed between the light-transmitting cylinder 64 and the mounting cylinder 63. The ultraviolet light module and the infrared light module are respectively fixedly disposed in the heat dissipation cavity 65 of the corresponding curing cylinder 6. Specifically, the light-transmitting cylinder 64 is preferably an inner layer of quartz glass. The quartz glass allows ultraviolet light and infrared light to irradiate the wire wrapping smoothly, thereby achieving the curing of the wire wrapping. The drive assembly 9 consists of a pair of drive shafts 91 located below the support frame 4. Each drive shaft 91 is equipped with a transmission gear 92, which meshes with drive gears 93 located on the outer circumference of the two mounting cylinders 63. The drive shafts 91 are connected to a motor 94, so that during operation, the motor 94 can drive the pair of gears to rotate reciprocally, thereby driving the ultraviolet light module and the infrared light module to rotate, achieving uniform irradiation of the wire wrap, reducing the time difference between different points of the wire wrap, avoiding local over-curing or under-curing caused by static irradiation, and thus improving the uniformity and quality of wire wrap curing.

[0066] And such Figure 8-10 As shown, the wire first passes through the deep curing cylinder 61 and is deeply cured by the irradiation of the ultraviolet light module. Specifically, the deep curing cylinder 61 includes a pre-curing section 610 and a transition section 611. A partition plate 613 is provided between the pre-curing section 610 and the transition section 611. The partition plate 613 is provided with a material hole located at the central channel 60. The ultraviolet light module includes an ultraviolet A lamp group 70 located in the pre-curing section 610 and a composite lamp group composed of ultraviolet A lamp group 70 and ultraviolet B lamp group 71 located in the transition section 611. The ultraviolet A lamp group 70 and ultraviolet B lamp group 71 located in the transition section 611 are arranged alternately and connected to a circuit board 12 connected to the control component. The circuit board 12 controls the ultraviolet A lamp group 70 and ultraviolet B lamp group 71 to be activated alternately.

[0067] When the wire wrapping enters the pre-curing section 610, the light irradiated by the ring-shaped UV-A lamp group 70 will first perform deep curing on the wire wrapping. The UV-A lamp group 70 adopts UV-A lamp strips, and multiple lamp strips are distributed in a ring in the heat dissipation cavity 65 of the deep curing cylinder 61, and are installed and connected to the heat dissipation cavity 65 through lamp holders. The light emitted by the UV-A lamp strips has a wavelength of 320-400nm, which is relatively long and has strong penetrating ability. It can promote the cross-linking of the insulating varnish inside the wire wrapping, thereby forming a preliminary three-dimensional network and achieving deep curing.

[0068] And such Figure 9As shown, the wire envelope, after passing through the pre-curing section 610, passes through the separator 613 and enters the transition section 611. The heat dissipation cavity 65 of the transition section 611 is equipped with a UV-A lamp group 70 and a UV-B lamp group 71. The UV-B lamp group 71 uses a UV-B light strip, which is arranged in a ring-like alternating pattern with the UV-A light strip within the heat dissipation cavity 65, and the two alternately irradiate the wire envelope, forming a gradient curing mode of "rapid surface film formation - continuous deep crosslinking". When irradiated by UV-B, the TPO initiator generates active free radicals on the surface, forming a hard film with a crosslinking density of 70% within 1 second, preventing surface scratches during subsequent traction. When switching to UV-A irradiation, Irgacure819 induces deep monomer migration, increasing the crosslinking degree to 85% within 3 seconds. This alternating mode allows the curing shrinkage stress of the wire envelope to be released in stages, reducing the residual stress inside the wire envelope.

[0069] After the wire wrapping undergoes deep curing in the deep curing cylinder 61, it enters the surface strengthening cylinder 62 for infrared light irradiation to achieve surface curing; specifically, as... Figure 12 As shown, the infrared light module includes an infrared quartz halogen lamp disposed in the mounting cylinder 63 of the surface strengthening cylinder. It is fixed in the heat dissipation cavity 65 by a high-temperature resistant bracket made of ceramic material and is arranged in a ring. The infrared light module can release thermal radiation in the 850-950 band, thereby increasing the temperature of the wire wrapping surface, accelerating the rapid cross-linking of the surface, and achieving surface curing.

[0070] Meanwhile, in order to control the ultraviolet light module 7 and the infrared light module 8, a circuit board 12 is also provided in the heat dissipation cavity 65 to connect the ultraviolet light group and the infrared light group respectively. The circuit board 12 is connected to the control component, so as to facilitate the operator to set the irradiation time and alternating irradiation of the light group. Although the light group adopts a ring distribution, since the light path is a straight line, rotating the mounting cylinder 63 can prevent the light group from continuously irradiating one position of the envelope, improve the uniformity of irradiation, and reduce the number of light groups in the heat dissipation cavity 65.

[0071] In order to dissipate heat inside the heat dissipation cavity 65, multiple heat dissipation holes (not shown in the figure) are provided on the outer surface of the mounting cylinder 63. During the rotation of the mounting cylinder 63, the airflow inside the heat dissipation cavity 65 will circulate and the heat dissipation efficiency inside the heat dissipation cavity 65 can be improved through the heat dissipation holes.

[0072] Meanwhile, in order to facilitate the electrical connection between the circuit board 12 inside the heat dissipation cavity 65 and the external control components, a wiring hole 13 is also provided on the outer surface of the mounting cylinder 63. Wires and the like can be connected to the outside through the wiring hole 13. In order to avoid the wires getting tangled during rotation, the mounting cylinder 63 only rotates back and forth, and the rotation angle is within 45 degrees.

[0073] Meanwhile, in order to increase the irradiation range of ultraviolet light A, an aluminum film 14 is also provided on the inner wall of the corresponding heat dissipation cavity 65. The aluminum film 14 can reflect the light, thereby increasing the irradiation range.

[0074] like Figure 8 , 10 As shown, the heat dissipation cavity 65 is also equipped with ultrasonic transducers 15 located at the pre-curing section 610 and the transition section 611, respectively, and connected to the control component. The ultrasonic transducers 15 are used to perform ultrasonic vibration on the wire wrapping. The ultrasonic transducers 15 are fixed on the light-transmitting cylinder 64 and are piezoelectric ceramic transducers. The ultrasonic transducers 15 in the pre-curing section 610 can release ultrasonic waves with an amplitude of 8 μm at 20 kHz. This allows the air to promote the generation of micro vortices in the paint liquid inside the wire wrapping, thereby uniformly dispersing the nanoparticles, curing agents, and adaptive microcapsules in the paint liquid. This promotes the full penetration of the paint liquid into the surface and gaps of the wire wrapping, thereby eliminating the agglomeration phenomenon in the paint liquid and reducing curing defects caused by local bubbles or uneven distribution. Furthermore, some microcapsules will rupture in areas with low cross-linking, and some microcapsules under weak cross-linking conditions can be stimulated to rupture in the subsequent curing stage, releasing curing promoters to replenish the cross-linking reaction in real time, ensuring the overall curing density and uniformity, achieving dynamic compensation, and thus achieving uniform and complete curing. In the transition section 611, the frequency of the ultrasonic transducer is reduced to 15kHz, and the amplitude is controlled at approximately 5μm to avoid excessive disturbance to the cured area. Simultaneously, it promotes the rupture of remaining microcapsules to release the curing agent, thereby ensuring a smooth transition of the crosslinking reaction between the deep and surface layers, gradually increasing the crosslinking density, and ensuring uniform overall curing. Finally, the glass fiber-wrapped wire, cured by the curing device 400, is wound up by the winding device 500 to obtain the finished product.

[0075] Example 2

[0076] Based on the glass fiber sheathing production equipment disclosed in Example 1, this example discloses a glass fiber production process, which is implemented using the production equipment of Example 1; the specific steps are as follows:

[0077] S1. Raw material preparation: Prepare clean copper wire coils free of oxide layer and impurities, and place them on the wire feeding frame 100. Place the prepared glass fiber on the winding device 200. At the same time, prepare light-curing insulating varnish and add it into the impregnation device 300.

[0078] First, in the preparation stage, clean copper wire coils free of oxide layers and impurities are selected. Simultaneously, prepared glass fiber is placed on the winding device 200, and then the prepared light-curing insulating varnish is added to the impregnation device 300. Next, the copper wire passes through the automated winding device 200, where the glass fiber is evenly wound around the surface of the copper wire, forming a continuous and uniformly structured wire blank. This provides an ideal substrate for subsequent varnish penetration and curing.

[0079] S2, Glass fiber wrapping: The copper wire is fed into the winding device 200, and then the winding device 200 is started. The glass fiber is wrapped around the surface of the copper wire to obtain the wire wrapping blank.

[0080] S3, Impregnation: The wire blank obtained in S2 is transported to the impregnation device 300 to complete the impregnation, resulting in a wire blank that is fully impregnated with light-cured insulating varnish.

[0081] The specific steps are as follows:

[0082] A1. Vacuum treatment: First, the wire blank in S2 will enter the vacuum chamber 21. At this time, the vacuum chamber 21 is under negative pressure. In the negative pressure environment, the air between the fibers of the wire blank entering the vacuum chamber 21 will be discharged, thus completing the vacuum treatment.

[0083] A2. Impregnation treatment: After step A1, the wire blank material that has undergone vacuum treatment will directly enter the impregnation chamber 22 through the sealed structure at the discharge port. The impregnation chamber 22 is under normal pressure. At this time, the light-cured insulating varnish in the impregnation chamber 22 will penetrate into the fiber gaps of the wire blank material under the action of pressure difference, thus completing the impregnation work.

[0084] During this process, the wire first enters the vacuum chamber 21. Under negative pressure, the air in the fiber gaps is effectively expelled. After vacuum treatment, the wire directly enters the impregnation chamber 22 under normal pressure through the sealed structure. Using the effect of external normal pressure, the light-cured insulating varnish quickly penetrates into all the tiny gaps of the wire, thereby achieving uniform adhesion of the varnish, avoiding the generation of bubbles due to residual air, and forming a stable and continuous coating.

[0085] S4. Curing: The wire blank that has been impregnated in S3 will be transported to the curing device 400. Then it will first pass through the ultraviolet light module to complete the deep curing of the wire blank, and then pass through the infrared light module to complete the surface curing of the wire blank, finally obtaining the finished glass wire.

[0086] The curing steps for S4 are as follows:

[0087] B1. First, the wire blank after being impregnated by A2 will enter the pre-curing section 610. At this time, the UV-A lamp group 70 in the pre-curing section 610 will release UV-A light to irradiate the wire blank for 2 seconds to complete deep curing. At the same time, the ultrasonic transducer 15 will be activated, releasing ultrasonic waves with an ultrasonic frequency of 20 kHz and an amplitude of 8 μm through the air medium to ultrasonically vibrate the paint liquid in the wire blank.

[0088] B2. After deep curing in B1, the wire blank will enter the transition section 611. Then, the ultraviolet A lamp group 70 and ultraviolet B lamp group 71 in the transition section 611 will alternately irradiate the wire blank for 1.5 seconds to complete the synchronous curing of the surface and the deep layer. At the same time, the ultrasonic transducer 15 will release ultrasonic waves with an ultrasonic frequency of 15 kHz and an amplitude of 5 μm to vibrate the wire blank.

[0089] B3. Finally, the wire blank after step B2 will enter the surface strengthening cylinder 62, and the infrared light module inside the surface strengthening cylinder 62 will release infrared light radiation on the wire blank for 2.5 seconds to solidify the surface of the wire blank and obtain the finished glass fiber wire.

[0090] First, in the deep curing cylinder 61, the internal structure is divided into a pre-curing section 610 and a transition section 611, separated by a partition plate 613. The partition plate 613 has a material hole located at the central channel 60 for the wire to pass through. The material hole is larger than the wire size, so that the partition plate will not interfere with the wire or affect the normal transport of the wire when rotating. In the pre-curing section 610, the UV-A lamp group 70 irradiates the wire blank with a wavelength of 365nm for about 2 seconds. This stage mainly relies on the penetrability of UV-A light to excite the photoinitiator, causing a preliminary cross-linking reaction inside the paint liquid. At the same time, the ultrasonic transducer 15, operating at 20kHz with an amplitude of about 8μm, promotes the uniform distribution of the paint liquid through cavitation effect and micro-vibration, thereby allowing the internal curing network to be initially formed. Subsequently, the wire envelope enters the transition section 611. In this section, UV-A lamp group 70 and UV-B lamp group 71 are alternately activated, with an alternating irradiation time of approximately 1.5 seconds. This alternation compensates for insufficient light intensity caused by the curvature of the wire envelope or local shading, and also achieves a smooth transition between the internal and surface cross-linking reactions. Simultaneously, the ultrasonic transducer 15 operating at 15kHz with an amplitude of approximately 5μm in the transition section 611 fine-tunes the local curing state, ensuring uniform cross-linking density. After pre-curing and transition curing, the wire envelope blank enters the surface strengthening cylinder 62. In this area, the infrared light module irradiates the wire envelope in a directional manner for approximately 2.5 seconds, rapidly heating the surface of the wire envelope to approximately 120°C, thereby accelerating the thermosetting reaction and promoting secondary cross-linking of the free radicals on the surface to form a dense and high-density cured layer.

[0091] S5. Winding: The glass fiber wrapped wire cured in S4 is wound up by the winding device 500.

[0092] The working principle of the entire process lies in achieving simultaneous internal and external curing through multi-stage, zoned curing. First, in the pre-curing section 610, UV-A light excites the photoinitiator to decompose and generate free radicals, which promotes the polymerization and cross-linking of monomers in the paint. Meanwhile, the action of ultrasound ensures that the paint is fully and evenly distributed between the wire fibers, eliminating local unevenness. Next, in the transition section 611, alternating UV-A and UV-B light sources utilize their respective characteristics (UV-A has strong penetrability, while UV-B can provide higher excitation energy) to achieve light energy compensation and a smooth transition, ensuring seamless connection of the cross-linking reaction between the internal and surface layers. Finally, in the surface strengthening section, the synergistic effect of infrared heating and high-energy UV-B irradiation enables the surface layer of the wire to quickly reach a high cross-linking density, thereby improving its wear resistance, high temperature resistance, and aging resistance.

[0093] The above process enables high uniformity curing of the wire wrapping, ensuring a dense cross-linked network both inside and on the surface of the wrapping. This significantly improves the electrical insulation, high temperature resistance, aging resistance, and mechanical wear resistance of the product. At the same time, the total curing time is only about 5.5 seconds, which greatly shortens the production cycle compared to traditional thermosetting processes, significantly improves production efficiency, and reduces unit energy consumption.

[0094] Example 3

[0095] Regarding the light-curing insulating varnish used in Examples 1 and 2, in this example,

[0096] The raw materials of the UV-curable insulating varnish, calculated by weight percentage, are as follows: 55-65% epoxy acrylate, 15-20% tripropylene glycol diacrylate, 5-8% polyurethane acrylate, 3-5% surface-modified silica, 0.5-1% dispersant, 2-3.5% photoinitiator, 0.3-0.5% polyether-modified siloxane, 0.1-0.3% defoamer, 0.2-0.4% 2,6-di-tert-butyl-p-cresol, and 3-4.5% adaptive microcapsules; wherein, the adaptive microcapsules are composed of an imidazole latent curing agent as the core material and urea-formaldehyde resin as the shell material.

[0097] In this system, epoxy acrylate, as the main resin, accounts for 55% to 65%. Under the action of a photoinitiator, it generates free radicals through ultraviolet light excitation, first undergoing a rapid polymerization reaction to form a preliminary three-dimensional network structure. Tripropylene glycol diacrylate (15% to 20%) serves both as a diluent to reduce the viscosity of the paint and as a crosslinking monomer to participate in the reaction, increasing the crosslinking density of the final cured network. Polyurethane acrylate (5% to 8%) provides flexibility and impact resistance, enabling the cured coating to maintain hardness while possessing a certain degree of elasticity and toughness, thereby improving the product's crack resistance and abrasion resistance. Surface-modified silica (3% to 5%), as a functional filler, can be uniformly dispersed in the system with the assistance of a dispersant (0.5% to 1%), not only enhancing mechanical strength and abrasion resistance but also regulating shrinkage and thermal expansion properties during the curing process. Photoinitiators (2%–3.5%) are essential components in UV curing systems. They absorb specific wavelengths of UV light and decompose to generate free radicals, rapidly initiating polymerization reactions and ensuring curing speed and efficiency. Polyether-modified siloxanes (0.3%–0.5%) improve leveling, surface gloss, and weather resistance, resulting in a smoother coating surface and resistance to environmental aging. Defoamers (0.1%–0.3%) suppress bubbles generated during stirring and coating, preventing defects after curing. 2,6-Di-tert-butyl-p-cresol (0.2%–0.4%) acts as an antioxidant, preventing premature polymerization due to oxidation during storage and use, thus ensuring product stability. Furthermore, the adaptive microcapsules (3%–4.5%) consist of an imidazole-based latent curing agent as the core material and urea-formaldehyde resin as the shell material. Their design aims to allow these microcapsules to rupture under micro-stress or localized temperature stimulation during the curing process when local curing conditions are insufficient or cross-linking reactions are incomplete. This releases additional curing agent, further promoting the cross-linking reaction, compensating for deficiencies in the initial curing, and ensuring uniform and sufficient cross-linking density throughout the coating. The entire photocuring process is based on UV-initiated polymerization. After UV irradiation, free radicals rapidly initiate the polymerization of monomers, forming a cross-linked network. The secondary curing mechanism of the microcapsules ensures complete curing even in thicker or partially obscured areas, ultimately resulting in an insulating coating with excellent high-temperature resistance, aging resistance, and mechanical abrasion resistance. This multi-component synergistic system not only achieves lower viscosity for easier coating and wetting but also enables high-speed curing and energy saving during the curing process. Simultaneously, the final coating exhibits excellent electrical insulation properties and long-term stability.

[0098] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A glass filament covered wire production apparatus comprising a control assembly and a pay-off stand (100), a winding device (200), a varnish dipping device (300) and a winding device (500) arranged in sequence along a covered wire conveying direction, characterized in that, The impregnation device (300) comprises a mounting bracket (1) and an impregnation assembly (2) arranged on the mounting bracket (1), the inside of the impregnation assembly (2) stores light-cured insulating paint, and the impregnation assembly (2) is used for impregnating the wire with the light-cured insulating paint; the curing device (400) is arranged between the impregnation device (300) and the winding device (500), the curing device (400) comprises an ultraviolet light module and an infrared light module arranged in sequence along the conveying direction of the wire, the ultraviolet light module is used for deep curing of the wire impregnated with the insulating paint, and the infrared light module is used for curing the surface of the wire impregnated with the insulating paint. The curing device (400) comprises a support frame (4), the support frame (4) is rotatably provided with a curing cylinder (6), the curing cylinder (6) is provided with a central passage (60) for the wire to pass through, and the ultraviolet light module and the infrared light module are arranged on the circumferential inner wall of the central passage (60); the curing device (400) further comprises a driving assembly (9) arranged in the shell (5) and connected with the curing cylinder (6), and the driving assembly (9) is used for driving the curing cylinder (6) to drive the ultraviolet light module and the infrared light module to make reciprocating circumferential motion with the central axis of the central passage (60) as the axis. The curing cylinder (6) is provided with two, which are a deep curing cylinder (61) and a surface layer strengthening cylinder, the ultraviolet light module is arranged in the deep curing cylinder (61), and the infrared light module is arranged in the surface layer strengthening cylinder. The deep curing cylinder (61) comprises a pre-curing section (610) and a transition section (611), a partition plate (613) is arranged between the pre-curing section (610) and the transition section (611), the partition plate (613) is provided with a material hole located at the central passage (60); the ultraviolet light module comprises an ultraviolet light A lamp group (70) arranged at the pre-curing section (610) and a composite lamp group arranged in the transition section (611) and composed of the ultraviolet light A lamp group (70) and an ultraviolet light B lamp group (71), the ultraviolet light A lamp group (70) and the ultraviolet light B lamp group (71) are arranged in the transition section (611) in an alternating manner and are connected with a control plate connected with the control assembly, and the control plate controls the ultraviolet light A lamp group (70) and the ultraviolet light B lamp group (71) to start alternately.

2. A glass filament lamp cord production apparatus according to claim 1, wherein The curing cylinder (6) comprises a mounting cylinder (63) rotatably arranged in the shell (5) and connected with the driving assembly (9), a light-transmitting cylinder (64) made of transparent material is sleeved in the mounting cylinder (63), and a heat dissipation cavity (65) is formed between the light-transmitting cylinder (64) and the mounting cylinder (63); the ultraviolet light module and the infrared light module are fixedly arranged in the heat dissipation cavities (65) corresponding to the curing cylinder (6).

3. A glass filament lamp cord production apparatus according to claim 2, wherein The heat dissipation cavities (65) are further provided with ultrasonic transducers (15) located at the pre-curing section (610) and the transition section (611) and connected with the control assembly, and the ultrasonic transducers (15) are used for ultrasonic vibration of the wire.

4. A glass filament lamp cord production apparatus according to claim 3, wherein The impregnation assembly (2) comprises a varnishing box (20) arranged on the mounting support (1), the varnishing box (20) is internally provided with an impregnation bin (22) connected with a varnish supply assembly, the impregnation bin (22) stores photocuring insulating varnish, and the two ends of the impregnation bin (22) are provided with holes for material passing; further comprising a vacuum bin (21) arranged in the varnishing box (20) and located at the end of the impregnation bin (22) close to the winding device (200), the vacuum bin (21) is connected with a negative pressure pump (212), and the two ends of the vacuum bin (21) are provided with a feeding port and a discharging port, the discharging port is communicated with the material port at one end of the impregnation bin (22), and the feeding port and the discharging port are provided with sealing structures, the sealing structures are used for sealing the gap between the wrapped wire and the two material ports, preventing external fluid from flowing into the vacuum bin (21).

5. A glass filamented wire production process using the glass filamented wire production apparatus according to any one of claims 1 to 4, characterized in that, The steps are as follows: S1, raw material preparation: prepare a copper wire coil with a clean surface, no oxidation layer and impurities, and place it on the wire feeding frame (100), and place the prepared glass fiber on the winding device (200); at the same time, prepare photocuring insulating varnish, and add the photocuring insulating varnish into the varnishing device (300); S2, glass fiber wrapping: the copper wire is conveyed into the winding device (200), and then the winding device (200) is started, the glass fiber is wound on the surface of the copper wire to obtain a wrapped wire blank by the winding device (200); S3, varnishing: the wrapped wire blank obtained in S2 is conveyed into the varnishing device (300) to complete varnishing, and a wrapped wire blank completely impregnated with photocuring insulating varnish is obtained; S4, curing: the wrapped wire blank impregnated in S3 is conveyed into the curing device (400), then passes through the ultraviolet light module first to complete deep curing of the wrapped wire blank, and then passes through the infrared light module to complete surface curing of the wrapped wire blank, and finally a finished glass fiber wrapped wire is obtained; S5, winding: the glass fiber wrapped wire cured in S4 is wound by the winding device (500).

6. A glass filament lamp cord production process according to claim 5, characterized in that, The raw materials of the photocuring insulating varnish, by mass percentage, comprise epoxy acrylate 55-65%, tripropylene glycol diacrylate 15-20%, polyurethane acrylate 5-8%, surface modified silicon dioxide 3-5%, dispersing agent 0.5-1%, photoinitiator 2-3.5%, polyether modified siloxane 0.3-0.5%, defoaming agent 0.1-0.3%, 2,6-di-tert-butyl-p-cresol 0.2-0.4%, and adaptive microcapsule 3-4.5%; wherein, the adaptive microcapsule is composed of imidazole latent curing agent as core material and urea-formaldehyde resin as shell material.

7. The glass fiber wrapped wire production process according to claim 6, wherein the varnishing step S3 is specifically as follows: A1, vacuum treatment: first, the wrapped wire blank in S2 enters the vacuum bin (21), at this time, the vacuum bin (21) is in a negative pressure state, and the air between the fiber gaps of the wrapped wire blank entering the vacuum bin (21) is discharged in the negative pressure environment, thereby completing the vacuum treatment; ​ A2, infiltration treatment: after the A1 step, the cable embryo after vacuum treatment will directly pass through the sealing structure at the discharge port into the infiltration bin (22), and the infiltration bin (22) is in a normal pressure state at this time. At this time, the photocuring insulation paint in the infiltration bin (22) will penetrate into the fiber gap of the cable embryo under the action of pressure difference, and the paint infiltration work will be completed; The curing step of S4 is specifically as follows: B1, first, the cable embryo after A2 infiltration will first enter the pre-curing section (610), at this time, the UV-A light group (70) in the pre-curing section (610) will release UV-A light to irradiate the cable embryo for 2 seconds to complete deep curing; At the same time, the ultrasonic transducer (15) will start, release ultrasonic frequency of 20khz, amplitude of 8μm ultrasonic wave through air medium, and ultrasonic vibration to the paint liquid in the cable embryo; B2, then the cable embryo after B1 deep curing will enter the transition section (611), then the UV-A light group (70) and the UV-B light group (71) in the transition section (611) will irradiate the cable embryo alternately, the irradiation time is 1.5 seconds, and the synchronous curing of the surface and the deep layer is completed, at the same time, the ultrasonic transducer (15) releases ultrasonic frequency of 15khz, amplitude of 5μm ultrasonic wave to realize the vibration of the cable embryo; B3, finally, the cable embryo after B2 step will enter the surface strengthening cylinder (62), and the infrared light module in the surface strengthening cylinder (62) will release infrared light radiation to the cable embryo, the irradiation time is 2.5 seconds, and the surface of the cable embryo is cured to obtain the glass filament cable product.

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