A superfine glass fiber winding molding process

Abstract

The present invention relates to the technical field of glass fiber winding and molding, and specifically to a superfine glass fiber winding and molding process, including S1, raw material preparation: first check the specifications and strength of the superfine glass fiber, ensure that the resin and curing agent are mixed in proportion after reaching the standard, and stir them evenly, S2, glass fiber pretreatment: degreasing, removing impurities, and applying impregnation agent to the glass fiber to enhance the bonding strength with the resin, S3, core mold preparation: select a core mold of suitable material and shape, and apply a release agent on its surface to ensure smooth subsequent demolding, S4, equipment debugging: check the operation of the winding equipment, set the winding angle, number of layers, and speed parameters, S5, winding molding: wind the pretreated glass fiber on the core mold according to the parameters, and monitor the tension in real time. The present invention generates negative pressure while fitting the glass fiber through a negative pressure generator and a concave surface design of a silicone sheet, efficiently removes bubbles, and significantly improves the quality and performance of the product.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber winding and molding, in particular to a superfine glass fiber winding and molding process. Background Art

[0002] In the field of modern industrial manufacturing, the ultra-fine glass fiber winding molding process has been widely used in many industries such as aerospace, automobile manufacturing, and chemical pipelines due to its unique advantages. However, the process still faces some key problems that need to be solved in the actual production process, among which the bubble problem is particularly prominent. The bubble problem has always been a major problem that plagues the ultra-fine glass fiber winding molding process. During the winding process, if the glass fiber is wound too fast, it is very easy to entrain air, causing bubbles to be mixed in the wound product. At the same time, the viscosity of the glue is too high, and the air bubbles involved are difficult to discharge. The presence of bubbles seriously affects the quality and performance of the product, reduces the strength and durability of the product, and in some application scenarios with relatively high requirements on product quality, such as the aerospace field, the presence of bubbles may even lead to serious safety hazards. Summary of the invention

[0003] The present invention discloses a superfine glass fiber winding molding process to solve the problem in the above background technology that glass fibers are very likely to carry air into the wound product during the winding process.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an ultra-fine glass fiber winding molding process, including S1, raw material preparation: first check the ultra-fine glass fiber specifications and strength, ensure that the resin and curing agent are proportioned after meeting the standards, and stir them evenly;

[0005] S2. Glass fiber pretreatment: degreasing, removing impurities, and applying impregnation agent to the glass fiber to enhance the bonding strength with the resin;

[0006] S3. Core mold preparation: Select a core mold of suitable material and shape, and apply a release agent on its surface to ensure smooth subsequent demoulding;

[0007] S4, equipment debugging: check the operation of winding equipment, set winding angle, number of layers, speed parameters;

[0008] S5, winding molding: the pre-treated glass fiber is wound on the core mold according to the parameters, the tension is monitored in real time, and the winding is carried out while the resin is applied to ensure impregnation;

[0009] S6. Curing treatment: According to the characteristics of the resin, curing is carried out at room temperature, by heating or by ultraviolet light, and pressurization is applied to improve the performance of the product;

[0010] S7, demoulding and post-processing: demoulding, trimming product edges and polishing surfaces after curing is completed;

[0011] S8, Quality inspection: Check the appearance for defects, measure the size, test the tensile and bending properties, and analyze the reasons for unqualified products and rework or scrap them;

[0012] Among them, the winding equipment described in S4 includes a main frame, a mounting frame is arranged on the top of the main frame, an extrusion device is arranged inside the mounting frame, the extrusion device includes a fixed frame 2 slidably connected to the inner wall of the mounting frame, a movable frame is slidably connected to the bottom of the fixed frame 2, an extrusion shaft is rotatably connected inside the movable frame, the extrusion shaft includes a shaft body, a plurality of docking planes are evenly arranged on the circumferential outer surface of the shaft body, a movable opening is penetrated through the outer wall of the shaft body at the docking plane, a pressing sleeve is slidably connected inside the movable opening, and a silicone sheet is arranged on the side of the pressing sleeve facing the outside of the shaft body.

[0013] The present invention is further configured such that a telescopic rod is provided between the second fixed frame and the movable frame, two fixed plates are fixedly connected to the two ends of the shaft body, and a connecting shaft that penetrates the movable frame and is rotatably connected is provided on one side of the second fixed plate close to the movable frame.

[0014] The present invention is further configured such that a plurality of spring bolts are fixedly connected to the inner wall of the shaft body near the movable opening, the spring bolts penetrate the compression sleeve and the two are slidably connected, a negative pressure tube is rotatably connected between the two fixed plates, one end of the negative pressure tube is provided with a connecting head that penetrates the connecting shaft and is rotatably connected, and a negative pressure generator connected to the negative pressure tube through a connecting tube is provided on the top of the second fixed frame.

[0015] The present invention is further configured as follows: a sleeve is provided at the bottom of the negative pressure tube, a docking sleeve is slidably connected to the outer wall of the sleeve, an extension plate is provided on the outer wall of the docking sleeve, a spring with one end connected to the negative pressure tube is provided on the top of the extension plate, a plurality of extrusion blocks 1 are provided on the outer wall of the second fixed plate near the docking sleeve, and an extrusion block 2 is provided at the position of the extrusion block 1 on the outer wall of the docking sleeve.

[0016] The present invention is further configured such that a movable groove is opened on the top of one side of the main frame, a dipping device is slidably connected inside the movable groove, the dipping device includes a dipping frame slidably connected to the inner wall of the movable groove, and a spiral pre-pressing mechanism is provided at one end of the dipping frame close to the extrusion device.

[0017] The present invention is further configured such that the spiral pre-pressing mechanism includes an outer cylinder fixedly connected to the dipping rack, an inner cylinder rotatably connected inside the outer cylinder, a spiral strip is arranged inside the inner cylinder, a docking tooth is arranged on the outer wall of the inner cylinder, an installation shell is arranged on the outer wall of the outer cylinder at a position corresponding to the docking tooth, and a gear meshing with the docking tooth is rotatably connected inside the installation shell.

[0018] The present invention is further configured such that the end of the outer cylinder is located at an upper position and is fixedly connected to a fixing frame that crosses the inner cylinder; a threaded rod is rotatably connected inside the fixing frame; a surface of the threaded rod is provided with multiple sections of threads in opposite directions; an outer wall of the threaded rod is threadedly connected to a threaded sleeve that is slidably connected to an inner wall of the fixing frame; a connecting arm is hinged at the bottom of the threaded sleeve; a fixing plate is hinged at the bottom of the connecting arm; a pressure plate made of rubber is provided at the bottom of the fixing plate; the pressure plate is in the shape of an elongated strip as a whole and has an arc; a limiting opening is provided at the end of the outer cylinder below the fixing frame.

[0019] The present invention is further configured as follows:

[0020] Beneficial effects of the ultra-fine glass fiber winding molding process of the present invention:

[0021] 1. Through the innovative combination of extrusion device and spiral preloading mechanism, this device can effectively solve the problem of glass fiber entraining air to form bubbles during winding; the negative pressure generator is combined with the concave design of the silicone sheet to generate negative pressure while fitting the glass fiber, effectively eliminating bubbles and significantly improving the quality and performance of the product.

[0022] 2. The rubber pressure plate in the spiral preloading mechanism is made of soft rubber material, which can fit the irregular surface morphology of the glass fiber and deform when under pressure, ensuring uniform pressure distribution and avoiding damage to the glass fiber caused by excessive local pressure. This design is particularly suitable for fields such as aerospace composite materials that have extremely high requirements for pressure uniformity.

[0023] 3. This device can adapt to glass fibers of different thicknesses, softness and hardness. By adjusting the threaded rod to change the distance between the pressing plate and the inner wall of the inner cylinder, the pressure applied to the glass fiber can be adjusted. At the same time, the speed of the second drive motor can be adjusted to change the rotation speed of the inner cylinder to meet the processing requirements of different fiber characteristics.

[0024] 4. The spiral shape of the spiral strip enables the glass fiber to continuously change its direction of movement during the forward movement, and cooperates with the all-round extrusion of the pressing plate to achieve efficient pre-compaction. This design not only improves the pre-compaction efficiency, but also effectively reduces the bubbles between the fibers.

[0025] 5. The soft pressing plate can buffer the impact caused by pressure changes during pressure adjustment, making pressure adjustment smoother and avoiding damage to glass fiber caused by sudden pressure changes. At the same time, the telescopic rod and movable frame design of the extrusion device allow movement according to the winding position, which improves the flexibility and intelligence level of the device.

[0026] 6. The overall structural design of the device is reasonable, and the various components work together stably and reliably. The spiral tube design ensures the stability of the glass fiber during the transportation process. The soft pressure plate can also absorb certain vibrations and impacts, which helps to maintain the stability of the entire mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, a detailed description is given below in conjunction with the accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Figure 1 This is a flow chart of the ultra-fine glass fiber winding molding process according to an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0031] Figure 3 It is a separation schematic diagram of an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the separation of the extrusion device according to an embodiment of the present invention;

[0033] Figure 5 It is an extrusion axial cross-sectional view of an embodiment of the present invention;

[0034] Figure 6 An exploded view of an extrusion shaft according to an embodiment of the present invention;

[0035] Figure 7 This is an enlarged view of the dipping device of an embodiment of the present invention;

[0036] Figure 8 An enlarged view of the spiral preloading mechanism of an embodiment of the present invention;

[0037] Fig. 9 2 is a cross-sectional view of a spiral preloading mechanism according to an embodiment of the present invention.

[0038] The markings in the figure are:

[0039] 1. Main frame; 11. Movable groove; 12. Glue dipping device; 121. Glue dipping frame; 122. Spiral pre-pressing mechanism; 1221. Outer cylinder; 1222. Inner cylinder; 12221. Spiral strip; 12222. Butt joint tooth; 1223. Limiting opening; 1224. Fixed frame 1; 1225. Threaded rod; 12251. Threaded sleeve; 12252. Connecting arm; 12253. Fixed plate 1; 12254. Driving motor 1; 1226. Pressing plate; 1227. Mounting shell; 1228. Gear; 1229. Driving motor 2;

[0040] 13. Mounting frame; 14. Extrusion device; 141. Fixed frame 2; 142. Movable frame; 143. Telescopic rod; 144. Extrusion shaft; 1441. Shaft body; 14411. Docking plane; 14412. Movable opening; 14413. Spring bolt; 1442. Fixed plate 2; 14421. Connecting shaft; 14422. Extrusion block 1; 1443. Negative pressure tube; 14431. Connecting head; 14432. Sleeve opening; 14433. Docking sleeve; 14434. Extrusion block 2; 14435. Extension plate; 14436. Spring; 1444. Pressing sleeve; 14441. Silicone sheet; 145. Negative pressure generator; 146. Connecting tube. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0043] See also Figure 1-Figure 9 , a superfine glass fiber winding molding process, including S1, raw material preparation: first check the specifications and strength of the superfine glass fiber, ensure that the resin and curing agent are proportioned after meeting the standards, and stir them evenly;

[0044] S2. Glass fiber pretreatment: degreasing, removing impurities, and applying impregnation agent to the glass fiber to enhance the bonding strength with the resin;

[0045] S3. Preparation of core mold: Select a core mold of suitable material and shape, and apply a release agent on its surface to ensure smooth subsequent demoulding;

[0046] S4, equipment debugging: check the operation of winding equipment, set winding angle, number of layers, speed parameters;

[0047] S5, winding molding: the pre-treated glass fiber is wound on the core mold according to the parameters, the tension is monitored in real time, and the winding is carried out while the resin is applied to ensure impregnation;

[0048] S6. Curing treatment: According to the characteristics of the resin, curing is carried out at room temperature, by heating or by ultraviolet light, and pressurization is applied to improve the performance of the product;

[0049] S7, demoulding and post-processing: demoulding, trimming product edges and polishing surfaces after curing is completed;

[0050] S8, Quality inspection: Check the appearance for defects, measure the size, test the tensile and bending properties, and analyze the reasons for unqualified products and rework or scrap them;

[0051] The winding device described in S4 includes a main frame 1, a mounting frame 13 is arranged at the top of the main frame 1, an extrusion device 14 is arranged inside the mounting frame 13, the extrusion device 14 includes a fixed frame 141 slidably connected to the inner wall of the mounting frame 13, a movable frame 142 is slidably connected to the bottom of the fixed frame 141, an extrusion shaft 144 is rotatably connected inside the movable frame 142, and the extrusion shaft 144 includes a shaft body 1441, and a plurality of docking planes 14411 are evenly opened on the outer surface of the shaft body 1441, and the shaft body 1441 is located at the docking position. A movable opening 14412 is penetrated through the outer wall at the plane 14411, and a pressing sleeve 1444 is slidably connected inside the movable opening 14412. A silicone sheet 14441 is provided on the side of the pressing sleeve 1444 facing the outside of the shaft body 1441, a telescopic rod 143 is provided between the second fixed frame 141 and the movable frame 142, and a second fixed plate 1442 is fixedly connected at both ends of the shaft body 1441, and a connecting shaft 14421 that penetrates the movable frame 142 and is rotatably connected is provided on the side of the second fixed plate 1442 close to the movable frame 142.

[0052] By adopting the above technical solution, the fixing frame 141 in the extrusion device 14 is slidably connected to the inner wall of the mounting frame 13, which enables the extrusion device 14 to move flexibly in the mounting frame 13 and can be accurately adjusted according to the winding position of the glass fiber. Several docking planes 14411 evenly opened on the outer surface of the circumference of the shaft body 1441 play a key role in the glass fiber winding process. When bubbles converge, the docking plane 14411 can dock with the convergence point to avoid excessive extrusion of the glass fiber. The silicone sheet 14441 adopts a flexible concave design, which can better fit the glass fiber wound on the surface of the core mold.

[0053] A plurality of spring bolts 14413 are fixedly connected to the inner wall of the shaft body 1441 near the movable opening 14412. The spring bolts 14413 penetrate the compression sleeve 1444 and the two are slidably connected. A negative pressure tube 1443 is rotatably connected between the second fixing plate 1442. A connector 14431 that penetrates the connecting shaft 14421 and is rotatably connected is provided at one end of the negative pressure tube 1443. A negative pressure generator 145 connected to the negative pressure tube 1443 through a connecting tube 146 is provided on the top of the second fixing frame 141. The negative pressure tube 144 A sleeve opening 14432 is provided at the bottom, a butt sleeve 14433 is slidably connected to the outer wall of the sleeve opening 14432, an extension plate 14435 is provided on the outer wall of the butt sleeve 14433, a spring 14436 having one end connected to the negative pressure tube 1443 is provided on the top of the extension plate 14435, a plurality of extrusion blocks 1 14422 are provided on the outer wall of the fixing plate 2 1442 near the butt sleeve 14433, and an extrusion block 2 14434 is provided on the outer wall of the butt sleeve 14433 at a position corresponding to the extrusion block 1 14422.

[0054] By adopting the above technical solution, the extrusion block 1 14422 cooperates with the extrusion block 2 14434. When the extrusion shaft 144 rotates to the docking plane 14411 and docks with the bubble convergence point, the fixed plate 2 1442 drives the extrusion block 1 14422 to approach the extrusion block 2 14434, and the extrusion block 1 14422 squeezes the extrusion block 2 14434, so that the docking sleeve 14433 falls and docks with the pressing sleeve 1444, pressing the pressing sleeve 1444 to extend out of the movable opening 14412, driving the silicone sheet 14441 to fit the surface of the glass fiber, and using negative pressure to defoam the convergence area.

[0055] A movable groove 11 is provided on the top of one side of the main frame 1, and a dipping device 12 is slidably connected inside the movable groove 11. The dipping device 12 includes a dipping frame 121 slidably connected to the inner wall of the movable groove 11, and a spiral pre-pressing mechanism 122 is provided at one end of the dipping frame 121 close to the extrusion device 14. The spiral pre-pressing mechanism 122 includes an outer cylinder 1221 fixedly connected to the dipping frame 121, an inner cylinder 1222 is rotatably connected inside the outer cylinder 1221, a spiral strip 12221 is provided inside the inner cylinder 1222, and a docking tooth 12222 is provided on the outer wall of the inner cylinder 1222. A mounting shell 1227 is provided on the outer wall of the outer cylinder 1221 corresponding to the docking tooth 12222, and a gear 1228 meshing with the docking tooth 12222 is rotatably connected inside the mounting shell 1227.

[0056] By adopting the above technical solution, the inner cylinder 1222 is connected to the outer cylinder 1221, and the spiral strip 12221 inside it is an important structure to guide the glass fiber forward and change its moving direction. When the driving motor 1229 drives the gear 1228 in the mounting shell 1227 to rotate, the gear 1228 is meshed with the docking teeth 12222 on the outer wall of the inner cylinder 1222, and the inner cylinder 1222 will continue to rotate, so that the glass fiber continues to move forward along the spiral track of the spiral strip 12221. This spiral motion mode allows the glass fiber to continuously change direction during the forward process, creating favorable conditions for the subsequent pre-compacting operation.

[0057] The end of the outer cylinder 1221 is located at the upper position and is fixedly connected to a fixing frame 1224 that crosses the inner cylinder 1222. A threaded rod 1225 is rotatably connected inside the fixing frame 1224. The surface of the threaded rod 1225 is provided with a plurality of sections of threads in opposite directions. The outer wall of the threaded rod 1225 is threadedly connected to a threaded sleeve 12251 that is slidably connected to the inner wall of the fixing frame 1224. A connecting arm 12252 is hinged at the bottom of the threaded sleeve 12251. A fixing plate 12253 is hinged at the bottom of the connecting arm 12252. A pressing plate 1226 made of rubber is arranged at the bottom of the fixing plate 12253. The pressing plate 1226 is in the shape of an elongated strip as a whole and has an arc. A limiting opening 1223 is arranged at the end of the outer cylinder 1221 below the fixing frame 1224.

[0058] By adopting the above technical solution, the fixing frame 1224 above the end of the outer cylinder 1221 crosses the inner cylinder 1222, providing a stable rotation support for the threaded rod 1225. The multiple sections of oppositely directed threads on the surface of the threaded rod 1225 are the key design to realize the downward pressure control of the pressure plate 1226. The rubber pressure plate 1226 at the bottom of the fixing plate 12253 is an overall long strip with an arc, which matches the arc of the inner wall of the inner cylinder 1222, and can better fit its irregular surface when the glass fiber passes through. By rotating the threaded rod 1225, the distance between the pressure plate 1226 and the inner wall of the inner cylinder 1222 can be accurately changed, thereby adjusting the pressure applied to the glass fiber. The limit port 1223 plays a limiting role, ensuring the stability and accuracy of the movement trajectory of the glass fiber, and ensuring that during the pre-compacting process, the pressure plate 1226 can stably and evenly apply pressure to the glass fiber, achieve initial compaction and reduce bubbles between fibers.

[0059] The working principle and use process of the embodiment of the present invention are as follows:

[0060] A driving motor 1229 is arranged on the outer wall of the mounting shell 1227 near the gear 1228 to drive the gear 1228 to rotate. A driving motor 12254 is arranged on the outer wall of the fixing frame 1224 near the threaded rod 1225. The output end of the driving motor 12254 passes through the fixing frame 1224 and is fixedly connected to the threaded rod 1225. A core mold is rotatably connected to the main frame 1 below the mounting frame 13. The pressing plate 1226 is made of rubber and is in the shape of a long strip with an arc. The arc matches the arc of the inner wall of the inner tube 1222 to ensure that the main frame 1226 is in the working state. It can better fit the glass fiber. The extrusion device 14 can slide arbitrarily in the mounting frame 13 and can move according to the winding position when winding the glass fiber. A driving motor three is arranged on the outer side of the movable frame 142 to control the rotation of the extrusion shaft 144. The rotation direction of the extrusion shaft 144 is opposite to that of the core mold. The negative pressure tube 1443 will not rotate with the shaft body 1441, and the sleeve 14432 remains vertically downward. When the pressing sleeve 1444 is in a normal state, it will be restricted by the spring bolt 14413 inside the shaft body 1441, and the sleeve 14432 will also be restricted by the spring 14436 and will not fall.

[0061] After the glass fiber is drawn out through the unwinding device, it first passes through the dipping device 12, where it is coated with resin, and then smoothly enters the inner cylinder 1222 of the spiral pre-pressing mechanism 122, and always moves forward along the inner wall of the inner cylinder 1222, and then the gear 1228 is driven by the second drive motor 1229 to drive the inner cylinder 1222 to rotate continuously. As the inner cylinder 1222 rotates, the glass fiber continues to move forward along the spiral track of the spiral strip 12221. The spiral shape of the spiral strip 12221 causes the glass fiber to continuously change its direction of movement during the forward movement. The pressing plate 1226 is controlled by the threaded rod 1225 to press down. When the glass fiber passes by, the pressing plate 1226 presses down to apply pressure to the glass fiber. Since the pressing plate 1226 is made of a material with good elasticity such as soft rubber, it can better fit the irregular surface morphology of the glass fiber. The soft pressing plate 1226 will deform to a certain extent when under pressure, and the contact area with the glass fiber is larger, and the pressure distribution is more uniform, thereby avoiding damage to the glass fiber caused by excessive local pressure. At the same time, this elastic deformation can also adapt to the tiny fluctuations and displacements of the glass fiber during the transportation process, ensuring stable application of pressure, and cooperating with the friction generated by the spiral strips 12221 when the glass fiber itself moves along the spiral path, so that the glass fiber is squeezed in all directions, thereby achieving initial compaction while reducing bubbles between the fibers.

[0062] The distance between the pressing plate 1226 and the inner wall of the inner tube can be accurately changed by adjusting the threaded rod 1225, thereby adjusting the pressure applied by the pressing plate 1226 to the glass fiber. At the same time, the operator can also adjust the rotation speed of the driving motor 1229 at any time as needed to change the rotation speed of the inner tube 1222. When dealing with thicker glass fibers, appropriately increasing the rotation speed of the pressing plate 1226 and the inner tube 1222 can effectively improve the pre-compacting effect. When facing finer glass fibers, the pressure and speed are reduced accordingly to prevent the fibers from being damaged. During the pressure adjustment process, the soft pressing plate 1226 can better buffer the impact of pressure changes, make the pressure adjustment smoother, and avoid damage to the glass fibers due to sudden changes in pressure.

[0063] When the glass fiber passes through the spiral pre-pressing mechanism 122, it will be wound on the surface of the core mold. During the winding process, it is very easy to entrain air into the wound product. At this time, the telescopic rod 143 controls the movable frame 142 to drive the extrusion shaft 144 to fall and press on the position where the glass fiber is wound at this time, and then rotate. The rotation of the extrusion shaft 144 will squeeze the glass fiber at this place, and by squeezing the glass fiber and resin, the resin and internal bubbles move forward and converge. When they converge to a certain extent, the extrusion shaft 144 will rotate to the docking plane 14411 and connect with the convergence point. Because the docking plane 14411 is a plane and is lower than the height of the circumferential outer wall of the shaft body 1441, it will not continue to squeeze the glass fiber. When the docking plane 14411 rotates quickly to dock with the convergence point, the rotation of the fixed plate 2 1442 will drive the extrusion block 1 14422 to approach the extrusion block 2 14434. As it rotates, the extrusion block 1 14422 will squeeze the extrusion block 2 14434, so that the docking sleeve 14433 falls and docks with the pressing sleeve 1444.

[0064] After the docking sleeve 14433 is docked with the pressing sleeve 1444, it will press the pressing sleeve 1444 to extend out of the movable opening 14412, and the extrusion will drive the silicone sheet 14441 to press on the surface of the glass fiber. Because the silicone sheet 14441 is concave, it fits better with the glass fiber wrapped on the surface of the core mold. At the same time, the silicone sheet 14441 is a flexible material and fits better. The negative pressure generator 145 keeps the negative pressure inside the negative pressure tube 1443 through the connecting tube 146. Therefore, negative pressure will start to occur when the silicone sheet 14441 is fitted, and the convergence area will be defoamed by the negative pressure. When the convergence area is defoamed, the shaft 1441 will squeeze and converge the glass fiber, and at the same time, the extrusion block 1 14422 will separate from the extrusion block 2 14434, and then the pressing sleeve 1444 and the sleeve opening 14432 will be reset.

[0065] In summary, compared with the prior art, the embodiments of the present invention have the following advantages:

[0066] Advantage 1: The rubber pressing plate 1226 in the spiral pre-pressing mechanism 122 and the silicone sheet 14441 in the extrusion device 14 cooperate with the negative pressure generator 145 to achieve efficient removal of bubbles during the glass fiber winding process. The elastic deformation and fit of the rubber pressing plate 1226 ensure initial compaction and reduce bubbles, while the concave design and negative pressure of the silicone sheet 14441 further accurately defoam the gathered bubbles, significantly improving the quality and performance of the product.

[0067] Advantage 2: The rubber pressure plate 1226 is made of soft rubber material, which can fit the irregular surface of the glass fiber and deform when under pressure, ensuring that the pressure is evenly distributed and avoiding damage to the glass fiber caused by excessive local pressure. At the same time, the distance between the pressure plate 1226 and the inner wall of the inner cylinder 1222 can be accurately changed by adjusting the threaded rod 1225, so as to adapt to glass fibers of different thicknesses, softness and hardness, and enhance the adaptability and flexibility of the device.

[0068] Advantage 3: The drive motor 1 1229 and the drive motor 2 12254 in the embodiment of the present invention are used to control the rotation speed of the inner cylinder 1222 and the pressing degree of the pressing plate 1226, respectively, to realize the intelligent adjustment of the pre-compacting process. In addition, the soft pressing plate 1226 can buffer the impact caused by the pressure change during the pressure adjustment process, making the pressure adjustment smoother and helping to maintain the stable operation of the entire mechanism.

[0069] Advantage 4: The ultra-fine glass fiber winding and molding device of the present invention has a compact structure design, and the various components work stably and reliably. The extrusion device 14 can slide arbitrarily in the mounting frame 13 and move according to the winding position, which is easy to operate. At the same time, the design of the negative pressure tube 1443 and the docking sleeve 14433 and other components also fully considers the convenience of operation and maintenance.

[0070] Advantage 5. By optimizing the pre-compacting and bubble removal process, the embodiment of the present invention significantly improves the production efficiency of the ultra-fine glass fiber winding molding process. At the same time, due to the improvement of product quality and the reduction of scrap rate, it also brings considerable economic benefits to the enterprise. In addition, the structural design of the device is reasonable, easy to manufacture and maintain, and further reduces the production cost.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A superfine glass fiber winding molding process, characterized in that: include: S1. Raw material preparation: First check the specifications and strength of the ultra-fine glass fiber, ensure that they meet the standards, mix the resin and curing agent in proportion, and stir them evenly; S2. Glass fiber pretreatment: degreasing, removing impurities, and applying impregnation agent to the glass fiber to enhance the bonding strength with the resin; S3. Preparation of core mold: Select a core mold of suitable material and shape, and apply a release agent on its surface to ensure smooth subsequent demoulding; S4, equipment debugging: check the operation of winding equipment, set winding angle, number of layers, speed parameters; S5, winding molding: the pre-treated glass fiber is wound on the core mold according to the parameters, the tension is monitored in real time, and the winding is carried out while the resin is applied to ensure impregnation; S6. Curing treatment: According to the characteristics of the resin, curing is carried out at room temperature, by heating or by ultraviolet light, and pressurization is applied to improve the performance of the product; S7, demoulding and post-processing: demoulding, trimming product edges and polishing surfaces after curing is completed; S8, Quality inspection: Check the appearance for defects, measure the size, test the tensile and bending properties, and analyze the reasons for unqualified products and rework or scrap them; Among them, the winding equipment described in S4 includes a main frame, a mounting frame is arranged on the top of the main frame, an extrusion device is arranged inside the mounting frame, the extrusion device includes a fixed frame 2 slidably connected to the inner wall of the mounting frame, a movable frame is slidably connected to the bottom of the fixed frame 2, an extrusion shaft is rotatably connected inside the movable frame, the extrusion shaft includes a shaft body, a plurality of docking planes are evenly arranged on the circumferential outer surface of the shaft body, a movable opening is arranged through the outer wall of the shaft body at the docking plane, a pressing sleeve is slidably connected inside the movable opening, and a silicone sheet is arranged on the side of the pressing sleeve facing the outside of the shaft body; A telescopic rod is arranged between the second fixed frame and the movable frame, two fixed plates are fixedly connected to the two ends of the shaft body, and a connecting shaft penetrating the movable frame and rotatably connected is arranged on one side of the second fixed plate close to the movable frame; A movable groove is provided on the top of one side of the main frame, a dipping device is slidably connected inside the movable groove, the dipping device comprises a dipping frame slidably connected to the inner wall of the movable groove, and a spiral pre-pressing mechanism is provided at one end of the dipping frame close to the extrusion device; Among them, a plurality of spring bolts are fixedly connected to the inner wall of the shaft body near the movable port, the spring bolts penetrate the compression sleeve and the two are slidably connected, a negative pressure tube is rotatably connected between the two fixing plates, one end of the negative pressure tube is provided with a connector that penetrates the connecting shaft and is rotatably connected, and a negative pressure generator connected to the negative pressure tube through a connecting tube is provided on the top of the second fixing frame.

2. The ultra-fine glass fiber winding molding process according to claim 1 is characterized in that: A sleeve is provided at the bottom of the negative pressure tube, and a docking sleeve is slidably connected to the outer wall of the sleeve. An extension plate is provided on the outer wall of the docking sleeve. A spring with one end connected to the negative pressure tube is provided on the top of the extension plate. A plurality of extrusion blocks 1 are provided on the outer wall of the second fixed plate near the docking sleeve, and an extrusion block 2 is provided at the position of the outer wall of the docking sleeve corresponding to the extrusion block 1.

3. The ultra-fine glass fiber winding molding process according to claim 1 is characterized in that: The spiral pre-pressing mechanism includes an outer cylinder fixedly connected to the dipping rack, an inner cylinder rotatably connected inside the outer cylinder, a spiral strip is arranged inside the inner cylinder, a docking tooth is arranged on the outer wall of the inner cylinder, a mounting shell is arranged on the outer wall of the outer cylinder at a position corresponding to the docking tooth, and a gear meshing with the docking tooth is rotatably connected inside the mounting shell.

4. The ultra-fine glass fiber winding molding process according to claim 3 is characterized in that: The end of the outer cylinder is located at the upper position and is fixedly connected to a fixing frame 1 that crosses the inner cylinder. A threaded rod is rotatably connected inside the fixing frame 1. The surface of the threaded rod is provided with multiple sections of threads in opposite directions. The outer wall of the threaded rod is threadedly connected to a threaded sleeve that is slidably connected to the inner wall of the fixing frame 1. A connecting arm is hinged at the bottom of the threaded sleeve. A fixing plate 1 is hinged at the bottom of the connecting arm. A rubber pressure plate is provided at the bottom of the fixing plate 1. The pressure plate is in the shape of a long strip as a whole and has an arc. A limiting opening is provided at the end of the outer cylinder below the fixing frame 1.

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