A winding forming device and a winding forming production line

Abstract

The application discloses a winding forming device, comprising a rack, a glue dipping device for dipping yarn, a core mold fixing device for fixing a core mold, a winding device for winding yarn on the core mold, the glue dipping device, the core mold fixing device and the winding device being sequentially arranged along the length direction of the rack; the rack comprises a first rack and a second rack, the core mold fixing device is arranged on the first rack, and the winding device is vertically arranged on the second rack; and the first rack and the second rack are separately arranged. The winding forming device can prevent the fiber layer from deviating due to the vibration of the winding device caused by the stress of the core mold, effectively improves the qualified rate of products, and is simple in installation and dismounting operation of the core mold, high in operation efficiency and high in recycling rate of resin glue solution. The application further discloses a winding forming production line.

Description

Technical Field

[0001] This application relates to the field of composite material molding equipment technology, and in particular to a winding molding equipment and a filament winding molding production line. Background Technology

[0002] Currently, composite material winding molding equipment generally adopts a structure with a rotary table set on an integral frame. The rotary table winds resin-impregnated fibers onto a mandrel, thus achieving fiber pre-forming. However, because both the mandrel and the rotary table are fixed to the integral frame, the stress on the mandrel during the molding process causes vibration of the entire frame, affecting the stability of the yarn guiding components on the rotary table. This can cause the fiber layer wound on the mandrel surface to shift, reducing product quality. Simultaneously, due to the relatively long overall length of the winding molding equipment, and the mandrel being even longer than the equipment itself, multiple tools are required to insert and remove the mandrel from the rotary table, making installation and disassembly cumbersome and inefficient. Furthermore, during the winding process, resin dripping from the fibers often slowly flows from the return plate into the rotary table's impregnation tank, increasing the amount of resin in the tank. Due to the long return path and time, the curing agent in the resin reacts with moisture in the air, causing the resin to age and deteriorate, affecting the product's yield. Summary of the Invention

[0003] To address the shortcomings of existing technologies, one of the objectives of this application is to provide a winding molding equipment, including a frame, a resin impregnation device, a mandrel fixing device, and a winding device. By separating the mandrel fixing device from the frame of the winding device, the fiber layer displacement caused by vibration of the winding device due to the stress on the mandrel can be prevented, effectively improving the product qualification rate. Furthermore, the installation and disassembly of the mandrel are simple, the operation efficiency is high, and the recycling rate of the resin is high.

[0004] To solve the above-mentioned technical problems, the technical solution adopted in this application is: a winding molding equipment, including: a frame, an impregnation device for impregnating yarn, a core mold fixing device for fixing the core mold, and a winding device for winding yarn onto the core mold. The impregnation device, the core mold fixing device, and the winding device are arranged sequentially along the length direction of the frame. The frame includes a first frame and a second frame. The core mold fixing device is arranged on the first frame, and the winding device is vertically arranged on the second frame. The first frame and the second frame are separated.

[0005] The winding molding equipment also includes several adhesive recovery tanks and several adhesive recovery boxes. The adhesive recovery tanks are horizontally arranged on the frame along the length of the frame and are all located below the yarn movement path. The bottom of the adhesive recovery tank is provided with a recovery hole, which is connected to the adhesive recovery box.

[0006] The winding molding equipment also includes several height-adjustable support devices, which are arranged below the core mold along the width direction of the frame, and the support devices are distributed parallel to each other along the length direction of the frame.

[0007] The support device includes a transmission frame, a movable frame, a support rod, two support auxiliary components, and a drive mechanism. The movable frame is movably connected to the transmission frame in the vertical direction, the support rod is fixed to the movable frame, the two support auxiliary components are movably connected to the support rod, and the drive mechanism is connected to the transmission frame to drive the movable frame to move up and down in the vertical direction.

[0008] The winding device includes a winding motor, a winding disc, a yarn guide assembly, and a winding claw, which are sequentially mounted on the outer periphery of the mandrel along the length of the frame. The winding disc, the yarn guide assembly, and the winding claw are all provided with yarn guide holes and correspond to each other. The yarn passes through the yarn guide holes on the winding disc, the yarn guide assembly, and the winding claw in sequence. The winding motor drives the winding device to rotate, thereby winding the yarn around the outer periphery of the mandrel.

[0009] The winding device also includes a winding impregnation tank, which is located below the winding claw, and the lower half of the winding claw is located in the winding impregnation tank.

[0010] The winding forming equipment includes two winding devices, which are arranged opposite each other along the length of the frame.

[0011] Two winding motors drive two winding devices to rotate in opposite directions, thereby achieving bidirectional winding of the yarn.

[0012] The winding molding equipment also includes a felt device, which is fixedly mounted on the first frame and located above the core mold fixing device.

[0013] The felt-making device includes a felt-hanging frame for placing felt rolls, a tensioner for driving the felt-hanging frame to rotate, and a felt roll impregnation tank. The felt-hanging frame and the felt roll impregnation tank are arranged on the first frame along the width direction of the frame, and the felt roll impregnation tank is located below the felt-hanging frame. The tensioner is connected to one end of the felt-hanging frame.

[0014] The felt roll impregnation tank is equipped with two scraper blades along the width of the first frame, with a gap between the two scraper blades.

[0015] The second objective of this application is to provide a winding molding production line for manufacturing winding products. The winding molding production line includes, in sequence, a yarn feeding device, the aforementioned winding molding equipment, a molding device, a traction device, and a cutting device along the forming direction of the winding products.

[0016] The beneficial effects of this application are as follows: Unlike the prior art, the winding molding equipment of this application includes a frame, a dipping device, a core mold fixing device, and a winding device. By separating the core mold fixing device from the frame of the winding device, the fiber layer displacement caused by the vibration of the winding device due to the force on the core mold can be prevented, thus effectively improving the product qualification rate.

[0017] Meanwhile, the winding molding equipment of this application is equipped with multiple height-adjustable support devices below the core mold, which makes the operation simple and the work efficiency high when the core mold is inserted into and removed from the winding device during installation and disassembly.

[0018] In addition, the winding molding equipment of this application is also equipped with multiple resin recovery tanks and resin recovery boxes to separately recover the resin dripping from various parts during the preforming process, effectively avoiding the aging failure and fiber breakage caused by the resin being exposed to air for too long, and improving the recycling rate of the resin. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the structure of the winding forming equipment 100 in one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the impregnation device 120 in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the core mold fixing device 130 in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the winding device 140 in one embodiment of this application;

[0024] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the support device 150 in one embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the felt device 160 in one embodiment of this application;

[0027] Figure 8This is a schematic diagram of the structure of the adhesive recovery tank 171 in one embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] In one embodiment, see Figure 1 A winding forming apparatus 100 is provided, comprising: a frame 110, an impregnation device 120 for impregnating yarn, a mandrel fixing device 130 for fixing a mandrel, and a winding device 140 for winding yarn onto the mandrel. The impregnation device 120, the mandrel fixing device 130, and the winding device 140 are arranged sequentially along the length of the frame 110. The frame 110 includes a first frame 111 and a second frame 112. The mandrel fixing device 130 is disposed on the first frame 111, and the winding device 140 is vertically disposed on the second frame 112. The first frame 111 and the second frame 112 are separately disposed. Specifically, the first frame 111 and the second frame 112 are respectively fixed to the ground by pouring concrete, thereby achieving the separate disposal of the first frame 111 and the second frame 112. Compared to existing technologies where both the mandrel and the rotary table are fixed to the overall frame, the stress on the mandrel and rotary table during the forming process causes vibration of the overall frame, which in turn affects the stability of the yarn guiding assembly on the rotary table, causing the fiber layer wound on the mandrel surface to shift and reducing product quality. The winding forming equipment 100 provided in this application, by separating the first frame 111 that fixes the mandrel fixing device 130 and the second frame 112 that fixes the winding device 140, can avoid the fiber layer shifting caused by vibration of the winding device 140 due to stress on the mandrel, effectively improving the product qualification rate.

[0030] See Figure 2The impregnation device 120 includes an impregnation frame 121, a yarn collecting plate 122, two yarn separating plates 123, an impregnation tank 124, and an impregnation frame 125. The yarn collecting plate 122, the impregnation tank 124, and the two yarn separating plates 123 are sequentially arranged on the impregnation frame 121 along the length of the frame 110, and the impregnation frame 125 is arranged on the impregnation tank 124. Specifically, the yarn collecting plate 122 is arranged vertically at the end of the impregnation frame 121 away from the core mold fixing device 130. The yarn collecting plate 122 has several yarn collecting holes for threading the yarn and guiding the yarn into the impregnation tank 124 to facilitate subsequent yarn impregnation. The impregnation tank 124 is a V-shaped groove, that is, the impregnation tank 124 is a downwardly concave V-shape. The impregnation tank 124 is horizontally arranged on the impregnation frame 121 to hold the resin liquid. The dipping frame 125 is horizontally arranged on the dipping tank 124 and is fitted to the inner bottom surface of the dipping tank 124. Specifically, the dipping frame 125 includes several dipping rollers 1251, which are arranged to form a V-shaped structure. That is, the several dipping rollers 1251 are arranged on the dipping frame 125 along the length of the frame 110 at the bottom of the dipping tank 124, and there is a certain gap between the several dipping rollers 1251 and the bottom plate of the dipping tank 124. After the yarn passes through the yarn collecting hole on the yarn collecting plate 122, it is sequentially inserted into the gap between the several dipping rollers 1251 and the bottom plate of the dipping tank 124 to be soaked in the glue. The several dipping rollers 1251 can keep the yarn at the bottom of the dipping tank 124, ensuring the wetting effect of the yarn. Two yarn separating plates 123 are vertically arranged at the end of the impregnation frame 121 near the core mold fixing device 130. The two yarn separating plates 123 are arranged at a certain angle to each other, and the opening direction of the angle is towards the yarn collecting plate 122. The yarn separating plates 123 are provided with several yarn separating holes for yarn to pass through. The two yarn separating plates 123 can divide the yarn that has passed through the impregnation tank 124 into two parts. At the same time, the opening direction of the angle between the two yarn separating plates 123 is towards the yarn collecting plate 122, so that the two parts of yarn after impregnation can pass through the yarn separating plates 123 to the sides away from the center line of the core mold fixing device 130. This allows the two parts of yarn to bypass the core mold fixing device 130, gradually approach the core mold from both sides and cover the outer periphery of the core mold to achieve pre-forming. It should be noted that the included angle between the two yarn separating plates 123 can be 100°, 120°, 150°, etc., as long as the two yarns can smoothly bypass the core mold fixing device 130 and smoothly transition to the next station, avoiding excessive bending of the yarn and causing wear during the movement. Therefore, in other embodiments, the included angle between the two yarn separating plates can be adjusted according to the specific structure of the equipment, and the number of yarn separating plates can also be adjusted to three, four, etc., according to process requirements. No specific limitation is made here.

[0031] The impregnation tank 124 also has a constant temperature heating function. By setting a suitable temperature, the resin solution in the impregnation tank 124 can always maintain a suitable viscosity, which is convenient for the yarn to be impregnated. This avoids the situation where the resin solution viscosity is too high when the temperature is too low, so that the yarn cannot be fully impregnated, thus affecting the product quality.

[0032] See Figure 1 and Figure 3 The core mold fixing device 130 is horizontally mounted on the first frame 111 and is used to adjust and fix the core mold. The core mold fixing device 130 includes an adjusting frame 131 and an adjusting block assembly 132; the adjusting frame 131 includes an upper top plate 1311, a first side plate 1312, a lower top plate 1313, and a second side plate 1314, which are sequentially fixedly connected end-to-end, thus making the adjusting frame 131 a hollow structure with a rectangular cross-section of its inner cavity. Figure 3 In the orientation, the two sides of the adjustment frame 131 without a plate surface are defined as the front side and the rear side of the adjustment frame 131, respectively, and the front and rear sides of the adjustment frame 131 are connected for the core mold to pass through. Two sliding grooves are provided on the upper top plate 1311, the first side plate 1312, the lower top plate 1313, and the second side plate 1314. The sliding grooves are located on the inner side of the front and rear edges of the adjustment frame 131, that is, perpendicular to the edges where the upper top plate 1311, the first side plate 1312, the lower top plate 1313, and the second side plate 1314 connect.

[0033] The upper top plate 1311 is parallel to the lower top plate 1313, and the first side plate 1312 is parallel to the second side plate 1314. An adjusting block group 132 is disposed within the adjusting frame 131. The adjusting block group 132 includes two transverse adjusting blocks 1321 and two longitudinal adjusting blocks 1322. The short sides of the two sides of the transverse adjusting blocks 1321 are respectively located in the grooves of the upper top plate 1311 and the lower top plate 1313, and the short sides of the two sides of the longitudinal adjusting blocks 1322 are respectively located in the grooves of the first side plate 1312 and the second side plate 1314. The adjusting block group 132 slides within the grooves to adjust the position of the core mold, thereby limiting and fixing the position of the core mold. It should be noted that since the two transverse adjusting blocks 1321 and the two longitudinal adjusting blocks 1322 need to slide within the grooves, they must not interfere with each other; that is, any two adjacent grooves must not intersect.

[0034] In this embodiment, following the principle of the upper top plate 1311 being on top and the lower top plate 1313 being on the bottom, the so-called longitudinal adjustment block 1322 is used to adjust the position of the core mold in the vertical direction; the so-called transverse adjustment block 1321 is used to adjust the position of the core mold in the horizontal direction. Specifically, the core mold fixing device 130 includes several adjusting screws, and several screw holes are provided at the position of the adjusting block group 132 projected onto the adjusting frame 131. The adjusting screws pass through the screw holes to drive the two transverse adjustment blocks 1321 and the two longitudinal adjustment blocks 1322 to move, thereby adjusting the position of the core mold in the horizontal and vertical directions. Furthermore, the adjusting screws ensure that the two transverse adjustment blocks 1321 and the two longitudinal adjustment blocks 1322 are in close contact with the core mold, thereby achieving the function of fixing the core mold. Using adjusting screws to drive the displacement of the adjusting block group 132 is simple to operate, highly flexible, and avoids direct contact between the adjusting screws and the core mold, thus preventing damage to the core mold.

[0035] In this embodiment, a set of adjustment block groups 132 is provided on the front side and the rear side of the adjustment frame 131. Each set of adjustment block groups 132 includes two horizontal adjustment blocks 1321 and two vertical adjustment blocks 1322, which can ensure the stability of the core mold adjustment and core mold fixation. In other embodiments, only one set of adjustment block groups can be provided in the adjustment frame, or two, three or more sets of adjustment block groups can be provided. Each set of adjustment block groups can also include more than two horizontal adjustment blocks and more than two vertical adjustment blocks. The specific settings can be made according to the actual adjustment requirements, and no specific limitation is made here.

[0036] See Figure 1 , Figure 4 and Figure 5 The winding device 140 is vertically mounted on the second frame 112 and is used to wind yarn around the outer periphery of the mandrel. The winding device 140 includes a winding motor 141, a winding disc 142, a yarn guide assembly 143, and a winding claw 144, which are sequentially arranged around the outer periphery of the mandrel along the length of the frame 110. The winding disc 142, the yarn guide assembly 143, and the winding claw 144 are all provided with corresponding yarn guide holes. The yarn passes through the yarn guide holes on the winding disc 142, the yarn guide assembly 143, and the winding claw 144 in sequence. The winding motor 141 drives the winding device 140 to rotate, thereby winding the yarn around the outer periphery of the mandrel. The cooperation of the winding disc 142, the yarn guide assembly 143, and the winding claw 144 increases the yarn tension, preventing the yarn from loosening and shifting due to insufficient tension when winding around the outer periphery of the mandrel, thus affecting product quality.

[0037] The winding motor 141 is a servo motor. By adjusting the speed of the servo motor, the speed of the winding device 140 can be precisely controlled, ensuring that the yarn maintains a stable winding tension and speed as it passes through the winding disc 142, the yarn guide assembly 143, and the winding claw 144, winding around the outer periphery of the mandrel. In other embodiments, the winding motor can be other types of motors or other driving devices, as long as they can stably drive the winding device to rotate; no specific limitations are imposed here.

[0038] Specifically, the winding disc 142 has a disc-shaped structure with a winding through-hole 1421 at its center for threading the mandrel. The winding disc 142 has several yarn bobbins 145 for holding fiber yarn rolls. These yarn bobbins 145 are evenly distributed circumferentially around the winding through-hole 1421 on one side of the winding disc 142, with the axis of each yarn bobbin 145 perpendicular to the disc surface. The winding disc 142 also has several first yarn guide holes 1422, corresponding one-to-one with the centers of the yarn bobbins 145, for threading the yarn from the fiber yarn rolls. The yarn guide assembly 143 is located on the other side of the winding disc 142 and includes two parallel yarn guide plates 1431 sleeved around the outer periphery of the mandrel. The yarn guide plates 1431 are annular plates and have a plurality of second yarn guide holes 14311. The plurality of second yarn guide holes 14311 are evenly distributed around the center of the yarn guide plate 1431. The second yarn guide holes 14311 on the two yarn guide plates 1431 are coaxially arranged in a one-to-one correspondence and correspond one-to-one with a plurality of first yarn guide holes 1422. The winding claw 144 includes a winding frame 1441, a plurality of winding rods 1442, and a plurality of winding elements 1443. The winding frame 1441 has a circular structure and is fitted around the outer periphery of the mandrel. The winding rods 1442 are arranged radially on the outside of the winding frame 1441. The plurality of winding rods 1442 are evenly distributed circumferentially around the center of the winding frame 1441. At least one third yarn guide hole 14421 is provided at the end of the winding rod 1442 away from the winding frame 1441, which is connected to the first yarn guide hole 1422 and the second yarn guide hole 1443. Hole 14311 is correspondingly provided; the winding member 1443 is an L-shaped plate, which is set on the outer side of the winding frame 144 away from the winding disc 142 along the length direction of the frame 110. Several winding members 1443 are evenly distributed around the center of the winding frame 1441. The short side of the winding member 1443 is fixed on the winding frame 1441. At least one fourth yarn guide hole 14431 is provided on the long side of the winding member 1443, which is correspondingly provided with the first yarn guide hole 1422, the second yarn guide hole 14311 and the third yarn guide hole 14421.

[0039] It should be noted that the winding disc 142, the yarn guide assembly 143, and the winding claw 144 are all provided with yarn guide holes that correspond to each other. That is, the first yarn guide hole 1422 on the winding disc 142, the second yarn guide hole 14311 on the yarn guide assembly 143, the third yarn guide hole 14421 on the winding rod 1442, and the fourth yarn guide hole 14431 on the winding member 1443 are all set in a one-to-one correspondence. In other words, the axes of each group of first yarn guide holes 1422, second yarn guide holes 14311, third yarn guide holes 14421, and fourth yarn guide holes 14431 are all located in the same axial plane of the mandrel. The yarn is sequentially threaded through the yarn guide holes on the winding disc 142, the yarn guide assembly 143, and the winding claw 144. That is, each yarn sequentially passes through the corresponding first yarn guide hole 1422, second yarn guide hole 14311, third yarn guide hole 14421, and fourth yarn guide hole 14431. When the winding motor 141 drives the winding device 140 to rotate, the yarn can maintain appropriate tension and be wound around the outer periphery of the mandrel, thus ensuring product quality.

[0040] In this embodiment, the first yarn guide hole 1422, the second yarn guide hole 14311, the third yarn guide hole 14421 and the fourth yarn guide hole 14431 are all ceramic through holes, that is, ceramic eyes are provided on the corresponding components. On the one hand, ceramic eyes have high hardness, strong wear resistance and long service life; on the other hand, ceramic eyes are usually made of precision ceramics and have a smooth surface, which can protect the yarn from damage when passing through them.

[0041] The winding disc 142, yarn guide assembly 143, and winding claw 144 are all provided with corresponding mounting holes. Fasteners are inserted into these mounting holes to achieve a fixed connection between the winding disc 142, yarn guide assembly 143, and winding claw 144, allowing them to rotate synchronously around the mandrel. In this embodiment, the fasteners are mating bolts and screws. In other embodiments, the winding disc, yarn guide assembly, and winding claw can also be connected by other methods such as rod clamping, as long as a reliable connection between the winding disc, yarn guide assembly, and winding claw is ensured.

[0042] Further, several wire guiding members 146 are obliquely provided on one side of the winding disc 142 close to the yarn guiding assembly 143, which are used to guide the yarn passing through the first yarn guiding hole 1422 into the second yarn guiding hole 14311, so as to avoid the yarn directly passing through the first yarn guiding hole 1422 into the second yarn guiding hole 14311, which may cause excessive wear and breakage of the yarn due to excessive bending. The several wire guiding members 146 are evenly distributed circumferentially around the winding through hole 1421 inside several first yarn guiding holes 1422 and are correspondingly arranged with the first yarn guiding hole 1422 and the second yarn guiding hole 14311. Specifically, the wire guiding member 146 includes a wire guiding frame 1461 and several wire guiding rods 1462. The wire guiding frame 1461 is in a "C" - shaped structure, which is formed by connecting two side plates and a bottom plate. The two side plates extend in the same direction away from the bottom plate on both sides where the bottom plate is connected to the two side plates. One end of the wire guiding frame 1461 is fixed on the winding disc 142, and the other end is a free end extending towards the direction close to the second yarn guiding hole 14311. The wire guiding rod 1462 is a cylindrical rod. Four wire guiding rods 1462 are arranged at intervals between the two side plates of the wire guiding frame 1461 and are perpendicular to the side plates. After the yarn passes through the first yarn guiding hole 1422, it enters the gap between the four wire guiding rods 1462 and the bottom plate of the wire guiding frame 1461 from the fixed end of the wire guiding member 146, or it can also pass through several wire guiding rods 1462 alternately in sequence from the fixed end of the wire guiding member 146, and then passes through the free end of the wire guiding member 146 and enters the second yarn guiding hole 14311, thus realizing the smooth threading of the yarn.

[0043] The winding device 140 further includes a winding dipping tank 147 for containing resin glue. The winding dipping tank 147 is located below the winding claw 144, and the lower half of the winding claw 144 is located in the winding dipping tank 147. Specifically, the winding dipping tank 147 is in an arc - shaped groove structure, which matches the shape of the winding claw 144, so that the winding claw 144 can rotate smoothly in the winding dipping tank 147. That is, the bottom plate of the winding dipping tank 147 is an arc - shaped plate, and its radian matches the arc shape formed by the free ends of several winding rods 1442 on the winding claw 144. Setting the winding dipping tank 147 to match the shape of the winding claw 144 can fully infiltrate the yarn on the winding claw 144 with a small amount of resin glue, improve the utilization rate of the resin glue, and avoid waste. A solenoid valve 1471 is provided at the bottom of the winding dipping tank 147 for regularly replacing the resin glue in the winding dipping tank 1471 to avoid the decline of product quality caused by the aging of the resin glue. When the resin glue needs to be replaced, open the solenoid valve 1471. After the resin glue in the winding dipping tank 147 is released completely, close the solenoid valve 1471, and then pour in new resin glue. The operation is simple and efficient.

[0044] The winding impregnation tank 147 also has a constant temperature heating function. By setting a suitable temperature, the resin solution in the winding impregnation tank 147 can always maintain a suitable viscosity, which is convenient for yarn impregnation. This avoids the situation where the resin solution viscosity is too high when the temperature is too low, so that the yarn cannot be fully impregnated, thus affecting the product quality.

[0045] The yarn threading path on the winding device 140 is as follows: the yarn from the yarn rolls in several yarn bobbins 145 is passed out through the corresponding first yarn guide hole 1422, then passes through the gap between the four yarn guide rods 1462 and the bottom plate of the yarn guide frame 1461 from the fixed end of the corresponding yarn guide 146, and then passes out from the free end of the yarn guide 146. It then passes through the corresponding second yarn guide hole 14311 on the yarn guide plate 1431 near the winding disc 142, the corresponding second yarn guide hole 14311 on the yarn guide plate 1431 away from the winding disc 142, the third yarn guide hole 14421 on the corresponding winding rod 1442, and the fourth yarn guide hole 14431 on the corresponding winding member 1443. When the winding device 140 is running, the winding motor 141 drives the winding device 140 to rotate, causing the yarn threaded on the winding device 140 to move continuously, passing through the first yarn guide hole 1422, the thread guide 146, the second yarn guide hole 14311, and the third yarn guide hole 14421 in sequence. Then, it is immersed in resin in the winding impregnation tank 147, and then passes through the fourth yarn guide hole 14431, and finally winds around the outer periphery of the mandrel.

[0046] The winding disc 142, the yarn guide assembly 143, and the winding claw 144 work together to increase the yarn tension. That is, after the yarn passes through the first yarn guide hole 1422, the second yarn guide hole 14311, the third yarn guide hole 14421, and the fourth yarn guide hole 14431 in sequence, it can maintain a suitable winding tension, so as to avoid the yarn from loosening and shifting due to insufficient tension when it is wound around the outer periphery of the mandrel, which would affect the product quality.

[0047] In this embodiment, sixteen yarn bobbins 145 are provided on the winding reel 142. Eight yarn bobbins 145 are evenly distributed circumferentially around the winding through hole 1421 on the inner side of the winding reel 142, and the other eight yarn bobbins 145 are evenly distributed circumferentially on the outer side of the winding reel 142. The inner and outer yarn bobbins 145 on the winding reel 142 are staggered, that is, the line connecting the center of the sixteen yarn bobbins 145 and the center of the winding reel 142 can divide the winding reel 142 into sixteen equal parts. Correspondingly, the winding disc 142 is provided with sixteen first yarn guide holes 1422 and sixteen yarn guide pieces 146, each yarn guide plate 1431 is provided with sixteen second yarn guide holes 14311, and the winding claw 144 is provided with sixteen winding rods 1442 and sixteen winding pieces 1443. Each winding rod 1442 is provided with three third yarn guide holes 14421 sequentially along its length, and each winding piece 1443 is provided with two fourth yarn guide holes 14431 sequentially along its length. The sixteen sets of first yarn guide holes 1422, second yarn guide holes 14311, third yarn guide holes 14421 and fourth yarn guide holes 14431 are arranged correspondingly. In other embodiments, the number of yarn bobbins can also be ten, twenty, etc., and the number of the first yarn guide hole, the second yarn guide hole, the third yarn guide hole, and the fourth yarn guide hole can also be ten, twenty, or increased or decreased proportionally. It can be designed according to process requirements. As long as the yarn bobbins, the first yarn guide hole, the second yarn guide hole, the third yarn guide hole, and the fourth yarn guide hole are set in a corresponding manner, and the yarn is threaded through them to ensure appropriate winding tension, no specific restrictions are imposed here.

[0048] In this embodiment, each group of yarn guide holes includes one first yarn guide hole 1422, two second yarn guide holes 14311, three third yarn guide holes 14421, and two fourth yarn guide holes 14431. It should be noted that each yarn strand passes sequentially through the first yarn guide hole 1422, the yarn guide component 146, the two second yarn guide holes 14311, any one or more third yarn guide holes 14421, and any one or more fourth yarn guide holes 14431 in each group of yarn guide holes before winding around the outer periphery of the mandrel, ensuring that the winding tension of all yarns remains consistent and is evenly wound around the outer periphery of the mandrel. In other embodiments, other combinations of yarn guide holes can also be used, such as providing only one second yarn guide hole, one third yarn guide hole, and one fourth yarn guide hole, or omitting the second yarn guide hole, or providing more types of yarn guide holes. Adjustments can be made according to specific needs, as long as the yarn strands maintain a suitable winding tension after sequentially passing through the yarn guide holes; no specific limitations are imposed here.

[0049] In this embodiment, the winding forming equipment 100 includes two winding devices 140, which are arranged opposite to each other along the length of the frame. Two winding motors 141 drive the two winding devices 140 to rotate in opposite directions, thereby achieving bidirectional winding of the yarn. By using two winding devices 140 for bidirectional winding, two layers of circumferential structures with the same winding angle and opposite directions can be formed around the mandrel, improving the circumferential strength of the product. Alternatively, the two winding motors 141 can drive the two winding devices 140 to wind in the same direction, sequentially winding around the mandrel to form two layers of circumferential structures with the same winding angle and direction; adjustments can be made according to the specific product design. It should be noted that when the yarn winding angle is less than 85°, the design of the yarn winding angle has a significant impact on the mechanical properties of the product. Usually, two winding devices 140 are required for bidirectional winding to ensure that the yarn layup structure of the product is symmetrical and the stress is reasonable. When the yarn winding angle is greater than or equal to 85°, the design of the yarn winding angle has a smaller impact on the mechanical properties of the product. It can be approximated that the yarn winding angle is 90°. At this time, whether two winding devices 140 are used for bidirectional winding or unidirectional winding, the final circumferential structure of the product can be considered to be approximately the same. Since the winding claws 144 and yarn bobbins 145 are located on opposite sides of the winding reel 142 on the same winding device 140, and the two winding devices 140 are arranged back-to-back, that is, the yarn bobbins 145 on the two winding reels 142 are arranged opposite each other, and the winding claws 144 of the two winding devices 140 are arranged back-to-back, on the one hand, the opposite arrangement of the yarn bobbins 145 on the two winding reels 142 allows the operator to change the yarn rolls on the two winding reels 142 from a position between the two winding reels 142, resulting in high work efficiency; on the other hand, when the winding angle of the yarn is greater than or equal to 85°, the two winding devices The winding claws 144 on the 140 are arranged in opposite directions, providing sufficient space for the two winding devices 140 to wind the yarn around the outer periphery of the mandrel sequentially. This allows the two winding devices 140 to alternately perform yarn changing operations without stopping the machine when winding in both directions or in the same direction. That is, when one winding device 140 stops to change yarn, the winding speed of the other winding device 140 is doubled, so that the product can continue production with the same wall thickness. After one winding device 140 finishes changing yarn, the above operation is repeated for the other winding device to change yarn, thereby achieving uninterrupted production and improving production efficiency. In other embodiments, one or three winding devices can also be set, depending on the product structure requirements, and no specific limitation is made here.

[0050] See Figure 1 and Figure 6The winding molding equipment 100 also includes several height-adjustable support devices 150. The support devices 150 are arranged below the mandrel along the width direction of the frame 110, and the several support devices 150 are distributed parallel to each other along the length direction of the frame 110. The multiple height-adjustable support devices 150 below the mandrel can support the mandrel during installation and removal, and assist the mandrel in smoothly entering and exiting the winding device 140, making operation simple and work efficiency high.

[0051] The support device 150 is a screw auger jack, including a transmission frame 151, a movable frame 152, a support rod 153, two support auxiliary components 154, and a handwheel 155. Specifically, the transmission frame 151 is fixed to the frame 110 along its width; the movable frame 152 is connected to the transmission frame 151 via a screw, allowing the movable frame 152 to move along the screw axis, i.e., vertically; the support rod 153 is a rod with a circular cross-section, fixedly mounted on the movable frame 152 along the width of the frame 110, and is used to support the core mold; the two support auxiliary components 154 have a frustum structure, are movably connected to the support rod 153 and coaxially arranged with the support rod 153, and are used to assist in supporting the core mold. The smaller bottom surfaces of the two support auxiliary components 154 are arranged opposite each other, so that the two support... The auxiliary components 154 are arranged with V-shaped openings facing each other. Since the core mold is usually a cylindrical structure, the V-shaped openings allow the core mold to be held in place by the two support auxiliary components 154 when it is placed on the support rod 153, making it less likely to roll and slip off. The handwheel 155 is connected to the transmission frame 151 through a connecting rod. By rotating the handwheel 155, the gear in the transmission frame 151 can be rotated, which in turn drives the lead screw to rise or fall, thereby controlling the moving frame 152 to move up and down in the vertical direction. In other embodiments, a servo motor can also be set to control the movement of the moving frame in the vertical direction to achieve automated operation and precise control of the movement distance.

[0052] Since the auxiliary support 154 is in direct contact with the core mold, to avoid damage to the core mold surface due to friction when pushing the core mold, the auxiliary support 154 is made of nylon. Nylon has high mechanical strength, good toughness, a smooth surface, and a low coefficient of friction, and will not cause damage to the core mold surface. In other embodiments, the auxiliary support can be made of other materials, as long as its surface is smooth and will not cause damage to the core mold surface.

[0053] In this embodiment, there are four support devices 150, distributed parallel to each other along the length of the frame 110. Two support devices 150 are located between the core mold fixing device 130 and the winding device 140 near the core mold fixing device 130, one support device 150 is located on the side of the other winding device 140 away from the core mold fixing device 130, and one support device 150 is located between the two winding devices 140. In other embodiments, the number and installation position of the support devices can be designed according to the length requirements of the equipment, and are not specifically limited here.

[0054] When installing the mandrel, adjust the height of several support devices 150 to be above the lowest point of the winding through hole 1421, that is, adjust the height of the support rod 153 to be slightly higher than the lowest point of the winding through hole 1421, so that the mandrel can pass smoothly through the winding through hole 1421. At this time, use a crane to lift one end of the mandrel to the support device 150 furthest from the mandrel fixing device 130, and slowly push the mandrel through the winding device 140 farthest from the mandrel fixing device 130, the support device 150, the winding device 140 close to the mandrel fixing device 130, the two support devices 150, and the mandrel fixing device 130 in sequence, and then fix it on the mandrel fixing device 130. After the mandrel is fixed, adjust the height of several support devices 150 to be below the lowest point of the mandrel, that is, adjust the height of the support rod 153 to be lower than the lowest point of the mandrel, so that the support devices 150 will not affect the production of the product. The operation of disassembling the mandrel is the same and will not be described again. Several support devices 150 are set below the core mold, so that the core mold can be erected on the support devices 150 during installation and disassembly. Compared with the traditional direct hoisting of the core mold, the operation is simple and the work efficiency is high when the core mold is inserted into and removed from the winding device.

[0055] Continue reading Figure 1 and Figure 7The winding molding equipment 100 also includes a felt device 160, which is fixedly mounted on the first frame 111 and located above the core mold fixing device 130. Specifically, the felting device 160 includes several felt hanging frames 161, a tensioner 162, a felt roll impregnation tank 163, several felt guide rods 164, and a felt guide (not shown). The several felt hanging frames 161 are fixed to the first frame 111 along the width direction of the frame 110 and are used to hold the felt rolls. The tensioner 162 is connected to one end of the felt hanging frame 161 and is used to increase the tension of the felt. The felt roll impregnation tank 163 is fixed to the first frame 111 along the width direction of the frame 110 and is located below the felt hanging frames 161. It is used to contain resin liquid to impregnate the felt. Two scraper blades 1631 are provided on the felt roll impregnation tank 163 along the width direction of the frame 110. There is a certain gap between the two scraper blades 1631. When the felt is impregnated with resin liquid, it passes through the gap between the two scraper blades 1631. Excess resin is scraped back from the felt fabric into the felt roll impregnation tank 163 to avoid waste. The rest of the structure of the felt roll impregnation tank 163 is similar to that of the winding impregnation tank 147 and will not be described again. Three felt guide rods 164 are fixed on the first frame 111 along the width direction of the frame 110 and are distributed in parallel. One of the felt guide rods 164 is located in the felt roll impregnation tank 163 and has a certain gap between it and the bottom plate of the felt roll impregnation tank 163. The felt fabric is inserted into this gap and impregnated with resin, so that the felt fabric is always at the bottom of the felt roll impregnation tank 163 to ensure the impregnation effect of the felt fabric. The other two felt guide rods 164 are located above and below the aforementioned felt guide rod 164, respectively, to increase the tension of the felt fabric. The felt guide is fixed on the frame 110 and located above the core mold to make the felt fabric cover the outer periphery of the core mold in a cylindrical shape.

[0056] When the felting device 160 is running, after the felt cloth on the felting frame 161 is lowered, it first passes through the gap between the felt roll impregnation tank 163 and the felt guide rod 164 above it, and then passes through the gap between the two scraper plates 1631, the felt guide rod 164 above the felt guide rod 164, and the felt guide rod 164 below the felt guide rod 164 in sequence, and then forms a cylindrical shape through the felt guide, and finally covers the outer periphery of the core mold.

[0057] In this embodiment, there are three felt hanging frames 161 and three felt walking rods 164. In other embodiments, the number and placement of felt hanging frames and felt walking rods can be designed according to process requirements, and no specific restrictions are imposed here.

[0058] See Figure 1 and Figure 8The winding molding equipment 100 also includes an adhesive recovery device 170, which comprises several adhesive recovery tanks 171 and several adhesive recovery boxes. The adhesive recovery tanks 171 are horizontally arranged on the frame 110 along its length and are all located below the yarn movement path. Each adhesive recovery tank 171 has a recovery hole 1711 at its bottom, which communicates with the adhesive recovery box. Since excess resin drips from the yarn after it has been impregnated with the adhesive during movement, the multiple adhesive recovery tanks 171 and boxes allow for the individual recovery of resin dripping from various parts during the pre-forming process. This high recovery efficiency effectively avoids aging and failure of the resin due to excessively long return paths or prolonged exposure to air, thus improving the recycling rate of the resin.

[0059] The adhesive recovery tank 171 has a four-sided pyramidal structure, formed by welding four triangular stainless steel plates together. A recovery hole 1711 is located at the bottom of the interconnected sections of the four stainless steel plates. When resin drips onto the adhesive recovery tank 171, the pyramidal structure allows the resin to flow along the side wall of the tank into the recovery hole 1711, and then through a pipe into the adhesive recovery box, achieving rapid resin recovery. In other embodiments, the adhesive recovery tank can also be conical, triangular pyramidal, or other structures, and can be made of steel plates or other materials, or manufactured using a one-piece molding method, as long as rapid resin recovery is achieved; no specific limitations are imposed here.

[0060] Along the yarn's movement path, due to the long span between some structures of the winding molding equipment 100, it is inconvenient to install a resin recovery tank 171. Therefore, several resin return plates 172 are installed. One portion of the resin return plates 172 is connected at one end to the impregnation device 120 and at the other end to the resin recovery tank 171. When resin drips onto this portion of the resin return plates 172, the resin quickly flows back into the impregnation device 120 along the resin return plates 172. The other portion of the resin return plates 172 is connected at both ends to two resin recovery tanks 171 respectively. When resin drips onto this portion of the resin return plates 172, the resin quickly flows along the resin return plates 172 into the resin recovery tanks 171, and then into the resin recovery box. The several resin return plates 172 and the resin recovery tanks 171 work together to achieve rapid recovery of resin throughout the entire yarn movement path.

[0061] In this embodiment, there are four adhesive recovery tanks 171, four adhesive recovery bins, and six adhesive return plates 172. In other embodiments, the specific number of adhesive recovery tanks, adhesive recovery bins, and adhesive return plates is not limited, as long as rapid recovery of resin adhesive can be achieved.

[0062] Once the resin in the resin recovery tank reaches a certain volume, it can be pumped back into the impregnation tank 124 of the impregnation device 120 by a resin pump to impregnate the yarn, thus realizing the recycling and reuse of the resin. The reason for pumping the recovered resin back into the impregnation tank 124 of the impregnation device 120 instead of the winding impregnation tank 147 of the winding device 140 is that when the winding device 140 is running, the winding claw 143 will continuously rotate around the mandrel in a vertical plane, thereby driving the yarn to rotate. This allows the yarn in the lower half of the winding claw 143 to be fully impregnated in the winding impregnation tank 147 and then rotate upwards, thereby winding onto the mandrel. During this process, since the yarn on the winding claw 143 is always moving in a vertical plane, when the yarn continues to rotate upwards after being impregnated with resin, the excess resin on the yarn will drip into the winding impregnation tank 147. Therefore, the resin in the winding impregnation tank 147 is consumed at a slower rate. If the recovered resin is pumped back into the winding impregnation tank 147, it will result in too much resin in the winding impregnation tank 147, which will hinder the movement of the yarn and may lead to problems such as fiber breakage.

[0063] The winding forming device 100 also includes several threading plates for combing the yarn. These threading plates are vertically arranged and parallel to each other along the length of the frame 110. Each threading plate has a through hole in its center for fitting a mandrel, and the diameter of the through hole is larger than the diameter of the mandrel. When the threading plate is fitted around the mandrel, the yarn can be evenly threaded through the gap between the threading plate and the mandrel, ensuring that the yarn is evenly distributed circumferentially around the mandrel. This maximizes the prevention of yarn knotting during the winding process and ensures uniform wall thickness of the hollow insulating tube formed by winding.

[0064] In another embodiment, this application provides a winding molding production line for manufacturing winding products. The winding molding production line includes, in sequence along the forming direction of the winding products, a yarn-laying device for placing yarn, a winding molding device 100 for winding yarn, a molding device for curing the impregnated yarn into winding products, a traction device for providing traction force, and a cutting device for cutting the winding products.

[0065] In this winding molding equipment 100, several yarns are placed on the yarn-laying device. After being drawn out by the yarn-laying device, the yarns enter the resin-impregnation device 120 to be impregnated with resin before entering the winding device 140. The winding molding equipment 100 is as described above and will not be repeated here.

[0066] The molding device includes a heating device, an outer mold and a core mold. One end of the core mold is fixed on the core mold fixing device 130, and the other end is inserted into the mold cavity of the outer mold after passing through two winding devices 140 in sequence. A tubular channel is formed between the core mold and the cavity wall. The heating device is set outside the outer mold. The yarn passes through the tubular channel and is heated and cured to form a wound product.

[0067] The traction device includes two alternating clamping and traction mechanisms, which can continuously form the wound product within a certain distance. The clamping and traction mechanism includes a sliding gripper slidably connected to the frame 110 and a movable gripper that can move vertically. The two grippers are arranged facing each other. A hydraulic cylinder drives the movable gripper, which can move vertically, to move downward, so that the movable gripper and the sliding gripper cooperate to clamp and traction the product. The sliding gripper can slide on the frame 110, allowing the clamping and traction mechanism to slide on the frame 110, thereby driving the wound product clamped by the two grippers to move synchronously with the clamping and traction mechanism.

[0068] The cutting device includes a following mechanism and a cutting mechanism mounted on the following mechanism for cutting the wound product. The following mechanism includes a base and a clamping mechanism disposed on the base. The clamping mechanism clamps the wound product, allowing the entire following mechanism to move synchronously with the wound product. The cutting mechanism is fixedly connected to the base, enabling the cutting mechanism to move synchronously with the following mechanism, thus achieving synchronous cutting.

[0069] The pultrusion winding production line also includes a control system, which controls all process parameters during the pultrusion winding production process and provides feedback on the actual results. During operation, the control system maintains a fixed ratio between the set traction speed and the set winding speed of the pultruded product in a linked state, ensuring that the pultrusion and winding speeds are matched and guaranteeing product quality. Furthermore, the pultrusion winding production line is equipped with several sensors to measure the actual forward speed and actual winding speed of the pultruded product. When the ratio between the actual forward speed and actual winding speed deviates from the ratio between the set traction speed and the set winding speed, the control system automatically adjusts the winding speed and issues a speed difference alarm, preventing problems such as yarn accumulation, mold blockage, or even production line shutdown caused by mismatched pultrusion and winding speeds.

[0070] In this embodiment, the feedback control method for the winding speed is a semi-closed-loop control method. That is, the actual winding speed is obtained by detecting the rotation speed of the winding disk 142 and compared in the control system to achieve closed-loop control. Compared with the full closed-loop control method that uses angular velocity, it can effectively reduce costs while meeting control accuracy.

[0071] When the winding molding production line is running, the fibers first need to be impregnated with resin for pre-forming. Specifically, the yarn on the yarn-laying device is impregnated with resin in the impregnation device 120 and then laid along the axial direction of the core mold to form an axial layer on the outer periphery of the core mold. The yarn on the winding device 140 is impregnated with resin in the winding impregnation tank 147 and then wound around the outer periphery of the axial layer by the winding claws 144 to form a winding layer. The felt on the felt-laying device 160 is impregnated with resin in the felt roll impregnation tank 163 and then formed into a cylindrical shape by the felt guide to cover the outer periphery of the winding layer, thus obtaining a preform. Then, the preform enters the tubular channel between the outer mold and the core mold of the molding device and is cured at high temperature to obtain the winding product. The two clamping and traction mechanisms of the traction device alternately advance to continuously traction the winding product, so that the yarn continuously enters the molding device and the cured winding product is continuously pulled out of the molding device and moves forward, with uninterrupted production. The cutting device cuts the winding product according to the required size.

[0072] The winding molding production line of this application realizes the automated production of winding products, reduces labor costs, and has high production efficiency.

[0073] In another embodiment, this application provides a method for producing a wound article, using the above-mentioned wound molding production line, specifically including the following steps:

[0074] S101: An inner axial layer is formed by pultrusion outside the mandrel;

[0075] After several yarns are drawn out from the yarn-making device, they are threaded into the resin-impregnating device 120 and impregnated with resin. Specifically, several yarns drawn out from the yarn-making device are guided into the impregnating tank 124 through the yarn-collecting plate 122, that is, they are sequentially threaded into the gap between several impregnating rollers 1251 and the bottom plate of the impregnating tank 124 and impregnated with resin. Then, they are divided into two yarns by two yarn-separating plates 123, bypass the core mold fixing device 130, and gradually approach the core mold from both sides and cover the outer periphery of the core mold, forming an inner axial layer by pultrusion.

[0076] The impregnation tank 124 has a constant temperature heating function. By setting a suitable temperature, the resin solution in the impregnation tank 124 can always maintain a suitable viscosity, which is convenient for the yarn to be impregnated. This avoids the situation where the resin solution viscosity is too high when the temperature is too low, so that the yarn cannot be fully impregnated, thus affecting the product quality.

[0077] S102: The inner axial layer is wound around the outer layer to form a winding layer, thus obtaining a preform of the wound product.

[0078] Several yarns in the yarn spool 145 of the winding device 140 are led out from the first yarn guide hole 1422 and sequentially threaded through the yarn guide 146, the second yarn guide hole 14311 on the yarn guide plate 1431, and the third yarn guide hole 14421 on the winding rod 1442. Then, they are immersed in resin in the winding impregnation tank 147 and then threaded into the fourth yarn guide hole 14431 on the winding member 1443. The winding motor 141 drives the winding device 140 to rotate, so that the yarns threaded on the winding device 140 move continuously and are wound on the outside of the inner axial layer to form a winding layer, thereby obtaining a preform of the wound product.

[0079] The winding impregnation tank 147 also has a constant temperature heating function. By setting a suitable temperature, the resin solution in the winding impregnation tank 147 can always maintain a suitable viscosity, which is convenient for yarn impregnation. This avoids the situation where the resin solution viscosity is too high when the temperature is too low, so that the yarn cannot be fully impregnated, thus affecting the product quality.

[0080] One or two winding devices 140 can be selected according to specific needs. When two winding devices 140 are used and the yarn winding angle is less than 85°, the yarn winding angle design has a significant impact on the mechanical properties of the product. Usually, two winding devices 140 need to be set up for bidirectional winding to make the yarn layup structure of the product symmetrical and the stress reasonable. When the yarn winding angle is greater than or equal to 85°, the yarn winding angle design has a smaller impact on the mechanical properties of the product. It can be approximated that the yarn winding angle is 90°. At this time, whether two winding devices 140 are set up for bidirectional or unidirectional winding, the final circumferential structure of the product can be considered to be approximately the same.

[0081] In this step, when the pultrusion and winding speeds are mismatched, the control system will automatically adjust the winding speed and issue a speed difference alarm, as described above, and will not be repeated here.

[0082] S103: The preform enters the molding device and is cured at high temperature to form a filament-wound product. The traction device pulls the filament-wound product to move along the forming direction of the filament-wound product, thereby continuously forming the filament-wound product.

[0083] The preform enters the molding device, where the yarn, already impregnated with resin, is threaded through the tubular channel between the core mold and the outer mold. After high-temperature curing, the winding product is obtained. The two clamping and traction mechanisms of the traction device alternately advance and continuously pull the winding product, so that the yarn continuously enters the molding device, and the cured winding product is continuously pulled out of the molding device and moves forward, resulting in uninterrupted production.

[0084] S104: The cutting device cuts the wound product according to the preset length.

[0085] When the wound product reaches the preset length, the clamping mechanism of the cutting device clamps the wound product, causing the accompanying mechanism to move synchronously with the wound product, which in turn drives the cutting mechanism to move synchronously and cut the wound product.

[0086] After the cutting is completed, the cutting device resets and waits for the next cutting.

[0087] In one application scenario, the pultruded product can also have an outer axial layer. That is, between steps S102 and S103, step S10 is also included: forming an outer axial layer by pultrusion outside the winding layer to obtain a preform of the pultruded product. The specific process is similar to the step of forming the inner axial layer by pultrusion in S101, and will not be described again here.

[0088] In another application scenario, the wound product can also be provided with an inner lining layer. That is, before step S101, step S11 is included: covering the outer periphery of the mandrel with felt to form an inner lining layer. Specifically, the felt on the felt device 160 is impregnated with resin liquid in the felt roll impregnation tank 163 and then formed into a cylindrical shape by the felt guide and covered on the outer periphery of the mandrel to form an inner lining layer.

[0089] In another application scenario, the wound product can also be provided with an outer felt layer. That is, between steps S102 and S103, step S12 is also included: wrapping the outer side of the winding layer with felt to form an outer felt layer, thereby obtaining a preform of the wound product. Specifically, the felt on the felt device 160 is impregnated with resin in the felt roll impregnation tank 163 and then formed into a cylindrical shape by the felt guide to cover the outer periphery of the winding layer, forming an outer felt layer.

[0090] In another application scenario, the winding product can also be provided with an inner lining layer, an outer axial layer, and an outer felt layer at the same time. That is, step S11 is included before step S101, and steps S10 and S12 are included between step S102 and step S103, which will not be described in detail here.

[0091] This application adopts the aforementioned method for preparing filament-wound products, which involves forming an inner axial layer and a winding layer through pultrusion and winding to obtain a preform of the filament-wound product. After high-temperature curing, the filament-wound product is formed. The process is simple, the production efficiency is high, and the cost is low. Furthermore, the filament-wound product prepared by this method has both good circumferential strength and axial strength, and can withstand both circumferential and axial forces at the same time, exhibiting excellent mechanical properties.

[0092] The beneficial effects of this application are as follows: Unlike the prior art, the winding molding equipment of this application includes a frame, a dipping device, a core mold fixing device, and a winding device. By separating the core mold fixing device from the frame of the winding device, the fiber layer displacement caused by the vibration of the winding device due to the force on the core mold can be prevented, thus effectively improving the product qualification rate.

[0093] Meanwhile, the winding molding equipment of this application is equipped with multiple height-adjustable support devices below the core mold, which makes the operation simple and the work efficiency high when the core mold is inserted into and removed from the winding device during installation and disassembly.

[0094] In addition, the winding molding equipment of this application is also equipped with multiple resin recovery tanks and resin recovery boxes to separately recover the resin dripping from various parts during the preforming process, effectively avoiding the aging failure and fiber breakage caused by the resin being exposed to air for too long, and improving the recycling rate of the resin.

[0095] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A winding forming apparatus characterized by comprising: The winding forming equipment comprises a rack, a gum dipping device for dipping yarns, a core mold fixing device for fixing a core mold, and a winding device for winding the yarns on the core mold, wherein the gum dipping device, the core mold fixing device, and the winding device are sequentially arranged along the length direction of the rack; The rack comprises a first rack and a second rack, the core mold fixing device is arranged on the first rack, and the winding device is vertically arranged on the second rack; The first rack and the second rack are separately arranged, and the first rack is separately arranged with the gum dipping device; The winding forming equipment further comprises a plurality of height-adjustable supporting devices, the supporting devices are arranged below the core mold along the width direction of the rack, and the supporting devices are distributed in parallel along the length direction of the rack; The winding device comprises a winding motor, a winding disc, a yarn guide assembly, and a winding claw, which are sequentially arranged outside the core mold along the length direction of the rack, wherein The winding disc is provided with a plurality of first yarn guide holes for guiding the yarns to pass through; The yarn guide assembly comprises two yarn guide plates which are arranged in parallel outside the core mold, and the two yarn guide plates are correspondingly provided with a plurality of second yarn guide holes; The side of the winding disc close to the yarn guide assembly is obliquely provided with a plurality of wire guiding members, one end of each wire guiding member is fixed on the winding disc and located inside the first yarn guide hole, and the other end thereof extends as a free end towards the second yarn guide hole; The winding claw comprises a winding frame, a plurality of winding rods, and a plurality of winding members, the winding frame is arranged outside the core mold, the winding rods are arranged outside the winding frame along the radial direction of the winding frame, the distal end of each winding rod away from the winding frame is provided with a third yarn guide hole, and the winding members are arranged outside the winding frame away from the winding disc along the length direction of the rack, and each winding member is provided with a fourth yarn guide hole; The yarn guide holes on the winding disc, the yarn guide assembly, the winding claw, and the wire guiding members correspond to each other, the yarns pass through the corresponding first yarn guide holes, the wire guiding members, the second yarn guide holes on the two yarn guide plates, the third yarn guide holes, and the fourth yarn guide holes in sequence, and the winding motor drives the winding device to rotate, so that the yarns are wound on the outer periphery of the core mold.

2. The winding forming apparatus according to claim 1, wherein The winding forming equipment further comprises a plurality of glue liquid recovery tanks and a plurality of glue liquid recovery boxes, the glue liquid recovery tanks are horizontally arranged on the rack along the length direction of the rack and are located below the movement path of the yarns, the bottom of each glue liquid recovery tank is provided with a recovery hole, and the recovery hole is in communication with the glue liquid recovery box.

3. The winding forming apparatus according to claim 1, wherein The supporting device comprises a transmission frame, a moving frame, a supporting rod, two supporting auxiliary members, and a driving mechanism, the moving frame is movably connected to the transmission frame in the vertical direction, the supporting rod is fixed to the moving frame, the two supporting auxiliary members are movably connected to the supporting rod, and the driving mechanism is connected to the transmission frame and is used for driving the moving frame to move up and down in the vertical direction.

4. The winding forming apparatus according to claim 1, wherein The winding device further comprises a winding impregnation tank, which is located below the winding claw, and the lower half of the winding claw is located in the winding impregnation tank.

5. The winding forming apparatus according to claim 1, wherein The winding forming equipment comprises two winding devices, which are oppositely arranged along the length direction of the frame.

6. The winding forming apparatus according to claim 5, wherein The two winding motors respectively drive the two winding devices to rotate in opposite directions, so as to realize bidirectional winding of the yarn.

7. The winding forming apparatus according to claim 1, wherein The winding forming equipment further comprises a cloth felt device, which is fixedly arranged on the first frame and located above the core mold fixing device.

8. The winding forming apparatus according to claim 7, wherein The cloth felt device comprises a felt roll hanging frame, a tensioner for driving the felt roll hanging frame to rotate, and a felt roll impregnation tank, wherein the felt roll hanging frame and the felt roll impregnation tank are arranged on the first frame along the width direction of the frame, the felt roll impregnation tank is located below the felt roll hanging frame, and the tensioner is connected to one end of the felt roll hanging frame.

9. The winding forming apparatus according to claim 8, wherein Two glue scraping plates are arranged on the felt roll impregnation tank along the width direction of the first frame, and a gap is left between the two glue scraping plates.

10. A spooling forming production line for manufacturing a spooled article, characterized by, The drawing and winding forming production line comprises, in sequence along the forming advancing direction of the drawing and winding product, a yarn arranging device, the winding forming equipment according to any one of claims 1-9, a forming device, a traction device, and a cutting device.

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