A fiber tendon pultrusion production line

Abstract

The present application relates to the technical field of fiber tendon pultrusion, and particularly relates to a fiber tendon pultrusion production line, which comprises a preforming device, a winding device and a heating and curing mold. The preforming device is used for bundling and preforming the fiber bundle after impregnation of resin to form a compact fiber bundle assembly. The winding device is arranged at the output end of the preforming device and used for covering the fiber bundle assembly with a spiral winding belt to form a semi-finished tendon material with a belt winding layer. The heating and curing mold receives the semi-finished tendon material from the winding device, heats the semi-finished tendon material and cures the semi-finished tendon material under the constraint of the heating and curing mold. The fixed-length cutting device is located on the output path of the unwinding device and used for fixed-length cutting of the fiber tendon body, so that the technical problems of uneven distribution of fiber and resin and high mechanical performance discrete coefficient caused by the traditional open oven curing forming of the fiber tendon are solved.

Description

Technical Field

[0001] This invention relates to the field of fiber pultrusion technology, and more specifically to a fiber pultrusion production line. Background Technology

[0002] Fiber-reinforced polymer (FRP) bars are advanced composite materials made by combining high-performance continuous fibers (such as glass fiber and basalt fiber) as reinforcement with thermosetting resin as the matrix through a specific process. Compared with traditional metal steel bars, they have many advantages such as high strength, high modulus of elasticity, corrosion resistance, fatigue resistance, lightweight, and insulation, and have become a key material for replacing or partially replacing steel bars in civil engineering, marine engineering, bridge reinforcement, and military facilities. Currently, the mainstream technical route for the industrial production of FRP bars with surface threads is the "curing tunnel" process. Specifically, resin-impregnated fiber bundles are passed through a rotating winding head, and the surface of the fiber bundles forms a threaded structure as they pass through the rotating winding head. Then, they are passed through an open curing tunnel that is tens of meters long and heated by hot air or infrared, allowing the resin to gradually gel and solidify without mold constraints. While this traditional model is widely used, its inherent defects are becoming increasingly apparent: First, the reliance on ultra-long drying tunnels for thermosetting results in a huge footprint for the entire production line, with high initial equipment investment and long-term energy consumption costs; second, and more importantly, the fiber reinforcement is free-curing in an open environment, lacking effective radial dimension constraints and uniform temperature field control, which causes significant fluctuations in the outer diameter, thread shape, and depth of the product, making it difficult to guarantee the uniformity of the distribution of internal fibers and resin, resulting in poor consistency in the mechanical properties of the final product and weakening its safety redundancy as a structural material.

[0003] Therefore, in view of this, the inventors propose a fiber pultrusion production line to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber pultrusion production line to solve the technical problem that traditional fiber pultrusion uses open drying tunnels for curing and molding, resulting in uneven fiber and resin distribution and high mechanical property dispersion coefficient.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A fiber pultrusion production line includes a preforming device for bundling and preforming resin-impregnated fiber bundles to form a tightly packed fiber bundle assembly.

[0007] A winding device, wherein the preforming device is arranged at the output end of the preforming device, is used to wrap the winding tape around the surface of the fiber bundle assembly in a spiral manner to form a semi-finished reinforcing bar with a winding layer;

[0008] A heating and curing mold receives semi-finished reinforcing bars from the winding device, heats the semi-finished reinforcing bars, and cures them under the constraint of the heating and curing mold to form cured reinforcing bars with a threaded structure.

[0009] An unwinding device is arranged at the output end of the heating and curing mold and is used to continuously peel off and synchronously wind up the winding tape on the surface of the cured rib to form the fibrous rib body.

[0010] A fixed-length cutting device is located on the output path of the unwinding device and is used to cut the fiber reinforcement body to a fixed length.

[0011] The beneficial effects of this invention are:

[0012] This invention replaces the traditional long-distance drying tunnel with a segmented heating molding die, shortening the length of the heating and curing zone from tens of meters to several meters. This not only significantly reduces the floor space and equipment investment of the production line but also improves thermal efficiency and reduces energy consumption through direct contact heating. Simultaneously, the "one-in-use, one-out-of-service" design of the dual winding components in the winding device, the constant tension continuous peeling and synchronous winding of the unwinding device, and the automated linkage of fixed-length cutting and material turning enable high-speed continuous operation throughout the entire process from impregnation to finished product collection. This greatly reduces production downtime and material waste, significantly improves overall production efficiency, and effectively reduces operating costs.

[0013] This invention fundamentally solves the problems of uneven pitch, product bending, and dimensional fluctuations caused by tension fluctuations, fiber twisting, and free curing in traditional processes by integrating constant tension winding control with an integrated torque motor, anti-torsion support for the fiber bundle by front / rear inner mold tubes, and radial constraint and uniform temperature control of the curing process by the molding die. The produced fiber reinforcement products feature clear and regular threads, precise outer diameter dimensions, uniform fiber distribution, and high straightness, thus ensuring excellent axial tensile strength, bending performance, and outstanding batch-to-batch stability, meeting the stringent requirements for performance consistency in high-end structural materials.

[0014] This invention's production line integrates a fully automated unwinding and recycling system with a fixed-length cutting and unloading system. The unwinding device uses a single servo motor to drive the rotary stripping mechanism, and utilizes an integrated torque motor and mechanical transmission chain to automatically complete constant tension winding and precise cable arrangement of the winding tape during stripping, ensuring neat recycling and direct reuse. The fixed-length cutting device achieves precise cutting through mechanical blocking and cylinder linkage, and automatically completes product triggering, blocking detachment, and inclined unloading via a tilting device, all without manual intervention. This highly automated design not only reduces labor intensity and improves operational safety but also enables the recycling of auxiliary materials, reduces solid waste, and embodies the concept of green manufacturing.

[0015] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the fiber pultrusion production line in this invention;

[0017] Figure 2 This is a schematic diagram of the resin impregnation structure in the fiber pultrusion production line of the present invention;

[0018] Figure 3 This is a schematic diagram of the fixed-length cutting device and the turning device in the fiber pultrusion production line of the present invention;

[0019] Figure 4 for Figure 3 A partial structural diagram;

[0020] Figure 5 This is a schematic diagram of the fixed-length cutting device in the fiber pultrusion production line of the present invention;

[0021] Figure 6 This is a schematic diagram of the connection structure of the first and second baffle units in one direction of the fiber pultrusion production line of the present invention;

[0022] Figure 7 This is a schematic diagram of the connection structure of the first and second baffle units in the fiber pultrusion production line of the present invention in another direction;

[0023] Figure 8 This is a schematic diagram of the overall structure of the winding device in one direction of the fiber pultrusion production line of the present invention;

[0024] Figure 9 This is a schematic diagram of the overall structure of the winding device in the fiber pultrusion production line of the present invention from another direction;

[0025] Figure 10 This is a cross-sectional view of two winding components in the fiber pultrusion production line of the present invention;

[0026] Figure 11 This is a schematic diagram of the structure of one of the winding components in the fiber pultrusion production line of the present invention, which is mounted on a rotating shaft;

[0027] Figure 12 This is a schematic diagram of the winding assembly in the fiber pultrusion production line of the present invention;

[0028] Figure 13 This is a cross-sectional view of the winding assembly in the fiber pultrusion production line of the present invention.

[0029] Figure 14 This is a schematic diagram showing the disassembled structure of the winding assembly in the fiber pultrusion production line of the present invention;

[0030] Figure 15 This is a partial structural schematic diagram of the winding assembly in the fiber pultrusion production line of the present invention;

[0031] Figure 16 This is a cross-sectional view of the winding assembly in Embodiment 1 of the fiber pultrusion production line of the present invention;

[0032] Figure 17 This is a cross-sectional view of the winding assembly in Embodiment 2 of the fiber pultrusion production line of the present invention;

[0033] Figure 18 This is a schematic diagram of the overall structure of the unwinding device in this invention;

[0034] Figure 19 This is a schematic diagram of the unwinding rotating assembly structure in one direction in the fiber pultrusion production line of the present invention;

[0035] Figure 20 This is a schematic diagram of the unwinding rotating assembly structure in another direction in the fiber pultrusion production line of the present invention;

[0036] Figure 21 This is a schematic diagram of the yarn tube winding unit in the fiber pultrusion production line of the present invention;

[0037] Figure 22 This is a cross-sectional schematic diagram of the yarn tube winding unit in the fiber pultrusion production line of the present invention. Detailed Implementation

[0038] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0040] This embodiment proposes a fiber reinforcement pultrusion production line, such as... Figures 1 to 22 As shown, the device includes a preforming device 1, used to bundle and preform resin-impregnated fiber bundles to form a tightly structured fiber bundle assembly; a winding device 2, with the preforming device 1 located at its output end, used to wrap the winding tape around the surface of the fiber bundle assembly in a spiral manner to form a semi-finished reinforcing bar with a winding layer; a heat-curing mold 3, which receives the semi-finished reinforcing bar from the winding device 2, used to heat the semi-finished reinforcing bar and cure it under the constraint of the heat-curing mold 3 to form a cured reinforcing bar with a threaded structure; an unwinding device 4, with the unwinding device 4 located at its output end, used to continuously peel off and synchronously wind the winding tape on the surface of the cured reinforcing bar to form the fiber reinforcing bar body; and a fixed-length cutting device 5, located on the output path of the unwinding device 4, used to cut the fiber reinforcing bar body to a fixed length.

[0041] In this embodiment, firstly, the fiber bundles, after being fully impregnated with resin, enter the preforming device 1, where they are bundled and preformed to form a tightly structured fiber bundle assembly. Subsequently, the fiber bundle assembly enters the winding device 2, where the rotating component A2 drives the winding tape to spirally wrap around the surface of the fiber bundle assembly at a constant tension, thereby forming a regular threaded structure on the fiber bundle assembly, producing a semi-finished reinforcing bar with a winding layer. The semi-finished reinforcing bar is immediately fed into the heat-curing mold 3, where, under the radial constraint and heating of the mold cavity, the resin rapidly cures and sets, ensuring precise product dimensions and consistent performance, forming a product with… The cured reinforcing material has a clear thread structure; then, the cured reinforcing material enters the unwinding device 4, which rotates around the axis of the cured reinforcing material, and smoothly and continuously peels off the winding tape, which serves as a temporary mold, in a reverse spiral. At the same time, the peeled winding tape is synchronously and neatly wound onto the yarn tube B53 for recycling through constant tension control, resulting in the final fiber reinforcing body; finally, the fiber reinforcing body is stably pulled to the fixed-length cutting device 5 by the traction device, and fixed-length cutting is completed by the mechanical stop and cutting execution mechanism according to the set length, thereby realizing continuous, automatic and efficient production from fiber bundle impregnation to finished product cutting.

[0042] In a preferred embodiment, the preforming device 1 includes a resin impregnation structure 11, a braiding machine 12, and / or a winding machine 13. The resin impregnation structure 11 is located upstream of the braiding machine 12 or the winding machine 13 and is used to impregnate the fiber bundles with resin. The braiding machine 12 and / or the winding machine 13 are existing equipment. The braiding machine 12 is used to braid the resin-impregnated fiber bundles, and the winding machine 13 is used to wind and preform the resin-impregnated fiber bundles. The resin impregnation structure 11 includes a resin tank 111, a yarn threading plate 112, and a yarn separating unit 113. The resin tank 111 is used to contain resin, and the yarn separating unit 113 includes several horizontal and vertical yarn separating rods, which together form the yarn separating unit 113. The yarn threading plate 112 and the yarn separating unit 113 are used to guide and separate the fiber bundles.

[0043] In this embodiment, multiple fiber bundles first pass through the yarn guide plate 112 in the impregnation structure 11 for initial gathering and guidance, and then enter the glue tank 111 and are immersed in the resin to complete full impregnation. After impregnation, the fiber bundles pass through the gap between the horizontal and vertical yarn separating rods in the yarn separating unit 113, and are orderly separated and flattened to ensure that each fiber is uniformly wrapped by the resin and to eliminate mutual adhesion. The fiber bundle assembly after this treatment is then conveyed to the braiding machine 12 and / or the winding machine 13. The braiding machine 12 further bundles and pre-shapes the fiber bundles by warp and weft interlacing or the winding machine 13 by spiral winding, forming a fiber bundle assembly with a compact structure, regular cross-section and uniform resin distribution, thereby providing a stable and high-quality foundation for the subsequent precise formation of the surface thread structure in the winding device 2.

[0044] In a preferred embodiment, the winding device 2 includes a winding frame A1 and a rotating assembly A2, the rotating assembly A2 being rotatably mounted on the winding frame A1; the rotating assembly A2 includes at least one winding assembly A3, the winding assembly A3 being mounted on the rotating assembly A2 and rotating synchronously with the rotating assembly A2; the winding assembly A3 includes a winding tape fixing plate A31, a winding tape roll A32 and a clamping mechanism A33, the winding tape roll A32 having a central hole, the clamping mechanism A33 being integrated into the winding tape fixing plate A31, the clamping mechanism A33 having a tightening part A4 for radially tightening the central hole of the winding tape roll A32, and a pressure cap part A5 for applying axial clamping force to the winding tape roll A32.

[0045] In this embodiment, the winding tape roll A32 is fitted onto the winding tape fixing plate A31. The clamping mechanism A33 is operated to cause its tightening part A4 to expand radially, thereby tightening and locking the center hole of the winding tape roll A32. At the same time, the pressure cap part A5 applies axial pressure to the end face of the winding tape roll A32 to correct its warping deformation. During the winding process, the rotating component A2 drives the winding component A3 mounted on it to rotate around the axis of the fiber bundle assembly, causing the winding tape to unwind from the fixed winding tape roll A32 and wind around the surface of the fiber bundle assembly in a set spiral trajectory, thereby forming a threaded structure. During this process, the synergistic effect of the tightening part A4 and the pressure cap part A5 ensures the clamping stability of the winding tape roll A32 under high-speed rotation and effectively constrains the axial and radial deformation of the winding tape roll A32, providing a basis for the smooth and uniform release of the winding tape, thereby ensuring the consistency of the winding pitch and the stability of the winding quality.

[0046] In a preferred embodiment, the rotating assembly A2 includes a rotating shaft A21, a rotating bracket A22, and a driving component A23. The rotating shaft A21 is rotatably mounted on the winding frame A1, the rotating bracket A22 is fixedly connected to the rotating shaft A21, and the driving component A23 is mounted on the winding frame A1 to drive the rotating shaft A21 to rotate. The driving component A23 is a drive motor, which drives the rotating shaft A21 to rotate via a belt connection. The rotating shaft A21 is a hollow structure with openings at both ends, and a winding hole A24 is provided in the middle of the rotating shaft A21.

[0047] The drive motor starts and drives the rotating shaft A21 to rotate via a belt connection. The rotating bracket A22, which is fixedly connected to the rotating shaft A21, rotates synchronously. The winding tape roll A32 is locked to the winding tape fixing plate A31 on the rotating bracket A22 by the clamping mechanism A33. The winding tape is pulled out from the winding tape roll A32 and passes through the winding hole A24 opened in the middle of the rotating shaft A21. At the same time, the pre-impregnated resin fiber bundle assembly passes through the openings at both ends of the rotating shaft A21 and its hollow interior along the axial direction. Under the continuous rotation drive of the rotating shaft A21 and the rotating bracket A22, the winding tape is stably output through the winding hole A24 and is evenly and continuously wound on the surface of the passing fiber bundle assembly in a set spiral trajectory. The fiber bundle assembly wrapped with the winding tape continues to be conveyed forward into the subsequent heating and curing stage. After the resin is cured and shaped, the winding tape is peeled off by the unwinding device 4, and finally a fiber rib finished product with clear and regular threads on the surface is obtained.

[0048] In a preferred embodiment, the assembly further includes an inner mold tube assembly A6, which includes a front inner mold tube A61 and a rear inner mold tube A62 disposed on the travel path of the fiber bundle assembly. The front inner mold tube A61 and the rear inner mold tube A62 are spaced apart within the rotating shaft A21 and are respectively fixed to the winding frame body A1. Both the front inner mold tube A61 and the rear inner mold tube A62 are hollow structures used to provide axial support for the fiber bundle assembly. The area between the front inner mold tube A61 and the rear inner mold tube A62 constitutes a working area for winding the winding tape.

[0049] During the winding process, the fiber bundle assembly passes sequentially through the hollow channels of the front inner mold tube A61, the working area, and the rear inner mold tube A62. The front inner mold tube A61 and the rear inner mold tube A62 are fixedly connected to the winding frame body A1 through fixed supports. When the winding tape spirally winds around the surface of the fiber bundle assembly in the working area located between the front inner mold tube A61 and the rear inner mold tube A62, the front inner mold tube A61 and the rear inner mold tube A62 form an axial constraint on the fiber bundle assembly, preventing overall torsion or local bending due to the circumferential tension of the winding tape or the torsional force of the rotating support A22. At the same time, the front inner mold tube A61 and the rear inner mold tube A62 limit the actual winding area length of the winding tape within the limited distance between them, shortening the force transmission path between the winding tape and the fiber bundle assembly, reducing the risk of additional deformation caused by the uneven distribution of the tension of the winding tape along the fiber bundle axis, thereby ensuring the stability of the winding process, the regularity of the thread formation, and ultimately ensuring the straightness and axial mechanical properties of the fiber reinforcement product.

[0050] Example 1

[0051] The tensioning part A4 includes a first screw A41a fixedly installed on the shaft of the winding tape fixing disc A31, a first ring sleeve A42a sleeved on the first screw A41a, and a plurality of first tensioning claws A43a arranged around the first ring sleeve A42a.

[0052] A fixing ring A44a is fixedly installed on the winding tape fixing disc A31. Several first slide bars A45a are slidably connected inside the fixing ring A44a. One end of the first slide bar A45a is connected to the corresponding first tightening claw A43a. The other end of the first slide bar A45a is hinged to a first connecting piece A46a. The end of the first connecting piece A46a is hinged to a first ring sleeve A42a. A first locking sleeve A47a is threadedly connected to the first screw A41a. The first locking sleeve A47a can drive the first ring sleeve A42a to move.

[0053] After the winding tape roll A32 is fitted over the fixing ring A44a, the first locking sleeve A47a is screwed down to move axially downward along the thread of the first screw A41a. The downward movement of the first locking sleeve A47a pushes the first ring sleeve A42a in contact with it to move downward synchronously. The downward movement of the first ring sleeve A42a is transmitted through several first connecting pieces A46a hinged to it. Each first connecting piece A46a pulls the first slide bar A45a hinged to it to slide outward radially along the fixing ring A44a. The radial movement of A45a drives the first tightening claw A43a connected to it to expand outward in the radial direction of the winding tape fixing disc A31; as the first locking sleeve A47a continues to tighten downward, the knurled structure on the outer surface of the first tightening claw A43a gradually presses and embeds into the inner wall of the center hole of the winding tape roll A32, thereby achieving reliable locking and circumferential positioning of the entire winding tape roll A32 through increased radial friction, thus ensuring that the winding tape roll A32 does not experience relative slippage or eccentric vibration during high-speed rotation winding.

[0054] The capping part A5 includes a winding tape capping A51 sleeved outside the fixing ring A44a. The winding tape capping A51 is located on the upper surface of the winding tape roll A32. A capping connecting sleeve A52 is provided on the winding tape capping A51, and the capping connecting sleeve A52 is threadedly connected to the first screw A41a.

[0055] After the winding tape roll A32 is radially locked by the tightening part A4, the winding tape cap A51 is sleeved on the outside of the fixing ring A44a and covers the upper end face of the winding tape roll A32; the cap connecting sleeve A52, which is threaded onto the first screw A41a, is rotated so that it is screwed downward along the axial direction of the first screw A41a. The lower end face of the cap connecting sleeve A52 then presses against the upper surface of the winding tape cap A51, and pushes the winding tape cap A51 to move downward smoothly as a whole. The lower surface is uniformly pressed against the upper end face of the winding tape roll A32, applying an adjustable and continuous axial pressure. This axial pressure effectively corrects the deformation of the winding tape roll A32, such as end face warping and interlayer loosening, which may occur due to its own winding or storage. This ensures that the winding tape roll A32 maintains a flat end face and stable interlayer during high-speed rotation and unwinding, thereby preventing tension fluctuations in the winding tape release caused by the deformation of the winding tape roll A32 itself, and further ensuring the uniformity and consistency of the winding pitch.

[0056] In a preferred embodiment, the winding tape fixing disc A31 is rotatably mounted on the rotating bracket A22, and a first torque motor A7 is fixedly installed on the other side of the rotating bracket A22. The output shaft of the first torque motor A7 passes through the rotating bracket A22 and is coaxially and fixedly connected to the winding tape fixing disc A31. The output shaft of the first torque motor A7 is coaxially and fixedly connected to the winding tape fixing disc A31. The output torque of the first torque motor A7 is preset to a constant value corresponding to the required winding tension by the controller. During the winding process, when the interlayer bonding of the winding tape roll A32 is tight and the unwinding resistance is normal, the winding tape tension can be maintained within the set range, and the first torque motor A7 does not move actively. When encountering a section in the winding tape roll A32 where the interlayer bonding is loose, the winding tape tension will drop instantaneously. At this time, the resistance torque of the winding tape to the fixing disc is lower than the preset output torque of the first torque motor A7. The first torque motor A7 then automatically rotates in the opposite direction of the winding tape tightening direction according to its torque control characteristics, actively driving the winding tape fixing disc A31 to tighten the loose winding tape. Through this dynamic adjustment, the first torque motor A7 continuously compensates for the tension fluctuation caused by material inhomogeneity, so that the winding tape always maintains a basically constant tensile tension during the unwinding process, thereby ensuring that the pitch of the winding tape wound to the surface of the fiber bundle assembly is uniform and consistent, effectively avoiding the phenomenon of uneven thread density caused by sudden tension drop.

[0057] It should be noted that, in the preferred embodiment of this example, the first torque motor A7 used is a widely used and technically mature type of motor in the field. Its working principle and output characteristics are clearly described in existing technologies (such as patent documents, motor product manuals, and automation control textbooks). The first torque motor A7 can be set and maintained with a constant output torque by an external controller. When the load torque is lower than its set value, the motor will actively rotate until the load torque is balanced with the set torque, thereby achieving closed-loop dynamic control of the tension of the winding tape. This first torque motor A7, through its inherent torque-speed characteristic curve and the cooperation of the feedback control circuit, can automatically identify tension fluctuations caused by changes in the interlayer bonding force of the winding tape and adjust the rotation direction and speed in real time to compensate for tension deviations. Therefore, the use of the first torque motor A7 as the constant tension control actuator in this embodiment is a reasonable use of the inherent function of a known component. Its implementation method and technical effects are clear, explicit, and achievable for those skilled in the art, and meet the requirements of the patent law regarding the clarity of claims.

[0058] In this embodiment, the expansion part A4 drives the first expansion claw A43a to expand radially through the first locking sleeve A47a, so that the knurled surface on the outer side of the first expansion claw A43a is tightly fitted with the inner ring of the winding tape roll A32, ensuring that the winding tape roll A32 and the winding tape fixing disc A31 are connected without circumferential slippage, and preventing sudden changes in unwinding resistance caused by clamping looseness; at the same time, the pressure cap part A5 presses down on the winding tape pressure cap A51 through the pressure cap connecting sleeve A52, applying axial clamping force to the end face of the winding tape roll A32, effectively correcting the warping of the winding tape roll A32 itself. The interlayer relaxation eliminates release jamming and tension jumps caused by deformation of the winding tape A32; together, they provide a stable mechanical basis for the constant tension control of the first torque motor A7, allowing the winding tape to be released evenly and smoothly, thereby ensuring the consistency of the winding pitch and the stability of the thread depth, and reducing the local circumferential impact on the fiber bundles caused by uneven release of the winding tape. Combined with the axial constraints of the front inner mold tube A61 and the rear inner mold tube A62, they jointly suppress the torsional tendency of the fiber bundle assembly, and improve the longitudinal straightness and axial mechanical properties of the subsequently formed fiber ribs.

[0059] In a preferred embodiment, two winding components A3 are installed on a rotating support A22. The two winding components A3 are symmetrically installed on the rotating support A22, forming a continuous production mode or a collaborative balancing operation mechanism with one in use and one on standby. When the winding tape roll A32 on one of the winding components A3 is about to run out, the spare winding component A3 can be pre-loaded with a new winding tape roll A32 and pre-tightened. When switching is required, simply transfer the winding tape from the nearly exhausted winding tape roll A32 to the new winding tape roll A32 and fix the end to achieve uninterrupted continuous winding, significantly reducing production downtime. Simultaneously, the symmetrical arrangement of the two winding components A3 on the rotating support A22 ensures that their own mass and the mass of the loaded winding tape roll A32 are balanced during rotation. This effectively reduces vibration and dynamic load caused by mass eccentricity in the rotating system, making the rotating support A22 run more smoothly under the drive of the first torque motor A7, further improving the stability of the winding process and the consistency of thread forming, and extending the service life of the device.

[0060] Example 2

[0061] In this embodiment, the tightening part A4 includes a second screw A41b fixedly mounted on the shaft of the winding tape fixing disc A31. A second ring sleeve A42b is sleeved on the second screw A41b, and the second ring sleeve A42b can move up and down along the axial direction of the second screw A41b. A plurality of second tightening claws A43b are arranged around the second ring sleeve A42b. A second slide bar A45b is arranged between the second tightening claws A43b and the second ring sleeve A42b, and one end of the second slide bar A45b is connected to the corresponding second tightening claw A43b. The other end of the second slide bar A45b is hinged to a second connecting piece A46b, and the free end of the second connecting piece A46b is hinged to a second ring A42b. Several tension springs A44b are provided between the second slide bar A45b and the second connecting piece A46b. The free end of the tension springs A44b is connected to a second screw A41b, and the tension springs A44b have a tendency to cause the second tightening claw A43b to retract inward. A second locking sleeve A47b is slidably connected to the second screw A41b, and the second locking sleeve A47b can drive the second ring A42b to move. The pressure cap A5 includes a winding tape pressure cap A51. A pressure cap A521 is formed on the second locking sleeve A47b, and the bottom of the pressure cap A521 abuts against the winding tape pressure cap A51. A connecting rope A53 is provided between the second locking sleeve A47b and the second tightening claw A43b. The winding tape fixing plate A31 is fixedly installed on the rotating bracket A22. A stepper motor A8 is fixedly installed on the other side of the rotating bracket A22. The output shaft of the stepper motor A8 passes through the rotating bracket A22 and the winding tape fixing plate A31 and is coaxially fixedly connected to the second screw A41b.

[0062] When stepper motor A8 starts, it drives the second screw A41b, which is coaxially fixed to the output shaft of stepper motor A8, to rotate. Under the centrifugal force generated by the rotation, the second connecting piece A46b pushes the second slide bar A45b to slide radially outward along the winding tape fixing disc A31. This causes the connected second tightening claw A43b to expand outward against the radial contraction force of the tension spring A44b, so that the knurled structure on the outer surface of the second tightening claw A43b presses against the inner wall of the center hole of the winding tape roll A32, achieving radial locking of the winding tape roll A32. At the same time, the second tightening claw A43b... When expanding outward, the connecting rope A53 has a component force that pulls the second locking sleeve A47b downward along the axial direction of the second screw A41b, causing it to move downward. The downward movement of the second locking sleeve A47b causes the pressure cover A521 to move downward synchronously. The pressure cover A521 presses against the winding tape pressure cover A51, thereby applying axial pressure force to the upper end face of the winding tape roll A32. At the same time, the knurled structure on the outer surface of the second tightening claw A43b expands radially and presses into the inner wall of the center hole of the winding tape roll A32, achieving radial locking. This realizes the linkage control of radial tightening and axial pressing actions. Only a single power input (such as the centrifugal force driven by the stepper motor A8) is needed to simultaneously lock the center hole of the winding tape roll A32 and level the end face, significantly simplifying the clamping operation steps and the number of required drive components, improving roll changing efficiency and reducing equipment complexity. The linkage design ensures that the radial fixing and axial pressing of the winding tape roll A32 are completely synchronized in timing and coordinated in force, avoiding problems such as roll skewing, local stress concentration or uneven clamping that may be caused by step-by-step operation. This ensures the dynamic stability and concentricity of the roll during high-speed rotation and unwinding, providing a uniform and stable tension foundation for subsequent winding processes. At the same time, the integrated linkage structure can automatically and quickly release the winding pad roll through the reset action of the tension spring A44b when disassembling, further improving the convenience of operation and production continuity. It is particularly suitable for production scenarios with relatively relaxed tension accuracy requirements and a pursuit of efficient assembly and disassembly and cost optimization.

[0063] In a preferred embodiment, the heat curing mold 3 includes a shaping table and a plurality of forming molds 31 disposed on the shaping table. A heating sleeve (not shown) is disposed inside the forming mold 31, and the semi-finished reinforcing material passes through each forming mold 31 in sequence and is connected to the unwinding device 4. In this embodiment, the semi-finished reinforcing bar, with its surface spirally wrapped with a winding tape, output from the winding device 2, passes sequentially through multiple forming molds 31 installed on the shaping table under the action of the traction device. Each forming mold 31 is equipped with an independently temperature-controlled heating jacket. By setting and maintaining different temperatures in segments, a reasonable temperature gradient from low to high is formed along the path of the semi-finished reinforcing bar. As the semi-finished reinforcing bar passes through the cavities of each forming mold 31, the resin first undergoes preliminary gelation in the low-temperature zone, and then completes full curing in the high-temperature zone. At the same time, the mold cavity applies continuous radial mechanical constraint to the semi-finished reinforcing bar, ensuring that its outer diameter is stable and accurately replicates the thread shape formed by the winding tape. The entire curing process is completed rapidly within the closed and controlled forming mold 31, replacing the traditional long-distance open drying tunnel. This significantly reduces the floor space and energy consumption while ensuring excellent dimensional accuracy, consistent thread morphology, and stable mechanical properties of the product.

[0064] As a preferred embodiment, the unwinding device 4 includes an unwinding frame B1, an unwinding rotation assembly B2, and an unwinding drive assembly B3. The unwinding rotation assembly B2 and the unwinding drive assembly B3 are mounted on the unwinding frame B1. The unwinding rotation assembly B2 can rotate around the fiber axis to peel the winding tape from the fiber surface in a reverse spiral. The unwinding drive assembly B3 is connected to the unwinding rotation assembly B2 and is used to drive the unwinding rotation assembly B2 to rotate. The unwinding rotation assembly B2 includes a mounting unit B4, a yarn tube winding unit B5, a yarn laying unit B6, and an unwinding drive unit B7 disposed on the mounting unit B4. The unwinding drive unit B7 is used to drive the yarn tube winding unit B5 to rotate and simultaneously drive the yarn laying unit B6 to move. The yarn laying unit B6 is used to make the winding tape uniformly reciprocate along the axial direction of the yarn tube winding unit B5.

[0065] In this embodiment, after the cured fiber reinforcement with the wrapping tape on its surface passes through the center of the unwinding frame B1, the unwinding drive assembly B3 is activated. Through synchronous belt drive, the unwinding rotation assembly B2 is driven to rotate continuously around the fiber reinforcement axis. The rotation direction is opposite to the spiral direction when the wrapping tape was initially wound, so that the wrapping tape is gradually and smoothly peeled off from the fiber reinforcement surface along a reverse spiral path. At the same time, the unwinding drive unit B7 installed on the unwinding rotation assembly B2 drives the yarn tube B53 in the yarn tube winding unit B5 to rotate, and performs constant tension winding of the peeled wrapping tape. During the winding process, the rotation of the yarn tube winding unit B5 synchronously drives the yarn laying unit B6 through the sprocket chain B66. The yarn laying unit B6 guides the wrapping tape to be evenly and neatly wound in layers on the surface of the yarn tube B53, realizing the orderly recycling of the wrapping tape.

[0066] In a preferred embodiment, the mounting unit B4 includes a first support shaft B41 and a second support shaft B42 rotatably mounted on the unwinding frame B1. The first support shaft B41 and the second support shaft B42 are coaxially arranged and hollow inside, forming a central channel for the fiber reinforcement to pass through. The end of the first support shaft B41 is coaxially fixedly connected to a first fixing plate B43, and the end of the second support shaft B42 is coaxially fixedly connected to a second fixing plate B44. The yarn tube winding unit B5 and the yarn laying unit B6 are arranged between the first fixing plate B43 and the second fixing plate B44, and the first fixing plate B43 and the second fixing plate B44 are provided with through holes communicating with the central channel so that the fiber reinforcement can pass through sequentially.

[0067] In this embodiment, the fiber to be unwound passes sequentially through the hollow interior of the first support shaft B41, the through hole of the first fixed plate B43, the working area defined by the first fixed plate B43 and the second fixed plate B44, the through hole of the second fixed plate B44, and the hollow interior of the second support shaft B42, thus penetrating the entire unwinding device 4 axially. The unwinding drive assembly B3 drives the first support shaft B41 and / or the second support shaft B42 to rotate through the transmission mechanism, thereby driving the first fixed plate B43 and the second fixed plate B44, which are respectively fixedly connected to the two, to rotate synchronously around the fiber axis. The yarn tube winding unit B5 and the yarn laying unit B6, installed between the first fixed plate B43 and the second fixed plate B44, rotate together with the fixed plates. The rotating disc forms an overall frame that revolves around the fiber reinforcement. During this process, the fiber reinforcement itself maintains a straight axial direction and does not rotate, while the rotating fixed disc frame drives the yarn tube winding unit B5 and the yarn laying unit B6 on it to make circular motions around the fiber reinforcement. This allows the winding tape led out from the peeling point on the surface of the fiber reinforcement to be continuously pulled out with the revolution, and is arranged and guided by the synchronously moving yarn laying unit B6, while being wound up in real time by the rotating yarn tube winding unit B5. The coaxial hollow design of the first support shaft B41 and the second support shaft B42 not only provides a continuous and interference-free passage for the fiber reinforcement, but also serves as the main support and torque transmission shaft of the entire rotating frame, ensuring the concentricity, stability and power transmission efficiency of the rotational motion.

[0068] In a preferred embodiment, the unwinding drive assembly B3 includes an unwinding servo motor B31 mounted on the unwinding frame B1. An active synchronous pulley B32 is connected to the output shaft of the unwinding servo motor B31. A driven synchronous pulley B33 is coaxially fixedly connected to the second support shaft B42 and / or the first support shaft B41. A belt B34 is tensioned between the active synchronous pulley B32 and the driven synchronous pulley B33. In this embodiment, the driven synchronous pulley B33 is preferably mounted on the second support shaft B42. After the unwinding servo motor B31 starts, it drives the active synchronous pulley B32 to rotate. The active synchronous pulley B32 transmits power to the driven synchronous pulley B33, which is coaxially fixed to the second support shaft B42, through the tensioned belt B34. The rotation of the driven synchronous pulley B33 drives the support shaft connected to it to rotate, which in turn drives the first fixed disk B43 and the second fixed disk B44, which are fixed to the support shaft, to rotate synchronously around the fiber axis. The unwinding servo motor B31 can adjust the rotation speed and direction of the unwinding rotating component B2 by precisely controlling the speed and direction of rotation, so as to match it with the forward speed of the fiber and the original pitch of the winding tape, thereby ensuring that the winding tape can be smoothly peeled from the surface of the fiber at a set, constant linear speed. The synchronous belt drive provides smooth power transmission and a certain overload protection capability, and it is easy to adjust the transmission ratio by changing the synchronous pulley with different tooth numbers to adapt to the unwinding process requirements of different specifications of fiber.

[0069] In a preferred embodiment, the yarn tube winding unit B5 includes an installation tube B51, a clamping clamp B52, a yarn tube B53, and a yarn tube seat B54. The installation tube B51 is detachably mounted on the first fixed plate B43 by means of bolt connection. The clamping clamp B52 is slidably disposed inside the installation tube B51, and the right end of the clamping clamp B52 extends out of the installation tube B51 for connection with the yarn tube B53. The yarn tube B53 and the yarn tube seat B54 are detachably connected. Furthermore, it also includes a rotating head B55, which includes a stator plate B551 and a moving plate B552. The stator plate B551 and the moving plate B552 are rotatably connected. The stator plate B551 is connected to the right end of the clamping head B52. A spring B553 is sleeved on the clamping head B52. The left end of the spring B553 is connected to the mounting tube B51, and the right end of the spring B553 is connected to the stator plate B551. The spring B553 has a tendency to drive the clamping head B52 away from the mounting tube B51. A pressure head B554 is connected to the right end of the moving plate B552. The right end of the pressure head B554 can be inserted into the yarn tube B53 and is detachably connected to the yarn tube B53.

[0070] When clamping the yarn tube B53, push the rotating head B55 to move to the left. The leftward movement of the rotating head B55 causes the clamping chuck B52 and the pressure head B554 to move to the left. When the clamping chuck B52 moves to the left, it slides into the mounting tube B51, compressing the spring B553 on the clamping chuck B52. Align the right end of the yarn tube B53 with the yarn tube seat B54 and connect it to the yarn tube seat B54. Then, align the central axis of the yarn tube B53 with the central axis of the yarn tube seat B54. The elastic force stored in the spring B553 acts on the clamping chuck B52 through the stator plate B551, forming a restoring force that makes the clamping chuck B52 tend to push to the right. When the yarn tube B53 is assembled... After positioning, under the continuous tension of spring B553, pressure head B554 aligns with yarn tube B53, thereby axially pressing and positioning yarn tube B53 on yarn tube seat B54 to prevent axial movement during high-speed rotation and winding. When disassembling yarn tube B53, simply pull yarn tube B53 in the opposite direction to overcome the pressure of spring B553 and retract the clamping head B52, allowing pressure head B554 to disengage from yarn tube B53, achieving quick disassembly and replacement of yarn tube B53. This design provides stable axial clamping force through spring B553 and, combined with the rotating head B55's angular deviation-adapting rotational connection, achieves quick, reliable clamping and convenient replacement of yarn tube B53.

[0071] In a preferred embodiment, the unwinding drive unit B7 includes a second torque motor B8 fixedly mounted on the second fixed plate B44, and the output shaft of the second torque motor B8 is connected to the yarn tube seat B54. The second torque motor B8 is fixedly mounted on the rotating second fixed disk B44. During unwinding, the second torque motor B8 rotates while being preset to a constant torque output mode by the controller. When the winding tape peels off from the fiber surface and is pulled towards the yarn tube B53, the load torque generated by the winding tape on the yarn tube seat B54 interacts with the output torque of the second torque motor B8. If the tension of the winding tape is stable due to uniform material or smooth traction, and the load torque is balanced with the preset torque, the second torque motor B8 maintains the current speed for smooth winding. If the winding tape becomes loose, causing a decrease in tension and the load torque to be lower than the preset torque, the second torque motor B8 automatically accelerates its rotation along the winding direction according to its torque control characteristics, actively tightening the loose winding tape until the tension returns to the set range. Conversely, if the tension increases abnormally, the second torque motor B8 can decelerate or brake briefly to prevent overload. Through this real-time dynamic adjustment, the second torque motor B8 ensures that the winding tape maintains a basically constant tensile tension throughout the winding process, thereby achieving smooth and uniform winding and providing a stable tension basis for the subsequent neat arrangement and regular winding of the winding tape.

[0072] In the preferred embodiment of this example, the second torque motor B8 used is a widely used and technologically mature type of motor in the field. Its working principle and output characteristics are clearly described in existing technologies (such as patent documents, motor product manuals, and automation control textbooks). The second torque motor B8 can be set and maintained at a constant output torque by an external controller. When the load torque is lower than its set value, the second torque motor B8 will actively rotate until the load torque is balanced with the set torque, thereby realizing closed-loop dynamic control of the tension of the winding tape. This second torque motor B8, through its inherent torque-speed characteristic curve and the cooperation of the feedback control circuit, can automatically identify tension fluctuations caused by changes in the interlayer bonding force of the winding tape and adjust the rotation direction and speed in real time to compensate for tension deviations. Therefore, the use of the second torque motor B8 as the constant tension control actuator in this embodiment is a reasonable use of the inherent function of a known component. Its implementation method and technical effects are clear, explicit, and achievable for those skilled in the art, and meet the requirements of the patent law regarding the clarity of claims.

[0073] In a preferred embodiment, the yarn laying unit B6 includes two yarn laying blocks B61, a yarn laying shaft B62, and a yarn guide B63. The two yarn laying blocks B61 are respectively fixedly mounted on a first fixed plate B43 and a second fixed plate B44. The yarn laying shaft B62 is rotatably mounted on the two yarn laying blocks B61. One end of the yarn laying shaft B62 passes through the first fixed plate B43 and is connected to a driven sprocket B64. A driving sprocket B65 is coaxially fixedly connected to the yarn tube seat B54. A chain B66 is provided between the driving sprocket B65 and the driven sprocket B64.

[0074] Two spiral guide grooves are formed along the axial direction of the yarn guide shaft B62. The two spiral guide grooves are connected end to end, and the spiral directions of the two spiral guide grooves are opposite and their phases are staggered. The lead wire B63 is provided with a sliding pin that cooperates with the spiral guide groove. When the yarn guide shaft B62 rotates, the sliding pin moves along the trajectory of the spiral guide groove, thereby driving the lead wire B63 to reciprocate linearly along the axial direction of the yarn guide shaft B62, so as to achieve uniform reciprocating distribution of the winding tape on the surface of the yarn tube B53. A guide rod B67 is provided between the two yarn guide blocks B61, and the lead wire B63 is slidably connected to the guide rod B67.

[0075] The yarn guide B63 is equipped with a guide wheel or guide roller B631. After the winding tape is peeled from the fiber reinforcement, it is guided by the guide wheel or guide roller B631 and enters the yarn tube B53 in the yarn tube winding unit B5. The installation angle of the guide wheel or guide roller B631 is adjustable to accommodate different winding tape widths or in / out directions. In this embodiment, the distance between the guide wheel or guide roller B631 and the center of the first fixed plate B43 is lower than the distance between the center of the yarn tube B53 and the first fixed plate B43. Since the starting point of the winding tape peeling off from the fiber surface is closer to the rotation center axis (i.e., the center of the first fixed plate B43), setting the guide roller or guide wheel B631 closer to the center of the first fixed plate B43 allows for a more direct and smooth reception of the winding tape peeled off from the fiber surface. This avoids excessively long overhangs or sharp turns in the winding tape in space, thereby reducing additional friction and tension fluctuations caused by path twists. By making the center distance of the guide roller or guide wheel B631 smaller than the center distance of the yarn tube B53, a gradually expanding and stable spatial transition path can be naturally formed during the transmission of the winding tape from the inner guide point to the outer take-up point. This helps maintain the tension uniformity of the winding tape during the guiding and transfer process and effectively prevents the winding tape from interfering with or colliding with other components of the device during high-speed rotation.When the yarn tube holder B54 rotates under the drive of the second torque motor B8 for winding, the driving sprocket B65, which is fixed coaxially with it, rotates synchronously and transmits power through the chain B66 to the driven sprocket B64 installed at one end of the winding shaft B62, thereby driving the winding shaft B62 to rotate continuously between the two winding blocks B61. The winding shaft B62 is machined with two helical guide grooves that are connected end-to-end, with opposite spiral directions and staggered phases. The sliding pin installed on the lead wire B63 simultaneously engages with these two helical guide grooves. When the winding shaft B62 rotates, the sliding pin is constrained by both helical guide grooves and moves along the trajectory of the helical guide grooves. Because the spiral directions of the two helical guide grooves are opposite, the sliding pin will first move along one helical direction during one rotation, and after reaching the end of one helical guide groove, it will seamlessly switch to the other opposite helical guide groove to continue moving, thus repeating the cycle. This converts the rotational motion of the spool B62 into a continuous reciprocating linear motion of the guide wire B63 along the axial direction of the spool B62. Simultaneously, the guide wire B63 is slidably connected to the guide rod B67, which is fixed between the two spool blocks B61, via a sliding structure. The guide rod B67 provides additional radial support and guidance for the reciprocating motion of the guide wire B63, ensuring the straightness and stability of its trajectory. The stripped winding tape first passes through the guide wheel or guide roller B631 on the guide wire B63, and then, guided by the reciprocating motion of the guide wire B63, is evenly and neatly layered and wound onto the surface of the synchronously rotating yarn tube B53. This achieves automatic and precise winding of the winding tape during the winding process, preventing the winding tape from accumulating, overlapping, or gaps on the yarn tube B53, thereby improving the utilization rate of the yarn tube B53's capacity and ensuring the regularity of the winding tape roll for subsequent reuse.

[0076] The second torque motor B8 outputs a constant torque to maintain stable winding tension of the winding tape. Its rotational output is driven by a coaxially fixed drive sprocket B65 and chain B66, which drives the wire guide shaft B62 to rotate continuously. The specially designed bidirectional spiral guide groove on the wire guide shaft B62 converts the rotational motion into the axial reciprocating motion of the wire guide B63, achieving uniform distribution of the winding tape. This design eliminates the need for separate drive and control units for winding and wire guide, which not only greatly simplifies the transmission structure and reduces manufacturing costs and energy consumption, but more importantly, ensures strict synchronization between the winding speed and the wire guide rhythm. This fundamentally avoids problems such as wire guide misalignment, winding tape accumulation, or tension fluctuations that may occur due to asynchronous control of multiple motors. Thus, it achieves efficient, stable, and high-quality winding tape recovery operations under limited space and single power conditions, demonstrating outstanding creativity in functional integration and motion coordination.

[0077] In a preferred embodiment, a dynamic balance adjustment assembly is also included. The dynamic balance adjustment assembly includes at least one counterweight rod B9, which is installed between the first fixed plate B43 and the second fixed plate B44. A counterweight block is detachably connected to the counterweight rod B9. In this embodiment, it is preferred that there are two counterweight rods B9.

[0078] After the unwinding device 4 is assembled or the rotating load such as the yarn tube B53 is replaced, the mass distribution of components such as the yarn tube winding unit B5, the yarn laying unit B6, and their loads may be asymmetrical, causing vibration in the rotating system during high-speed operation. At this time, by adding, removing, or adjusting the position of the detachable counterweights on the counterweight rod B9, which is symmetrically installed between the first fixed plate B43 and the second fixed plate B44, the mass distribution of the entire rotating frame can be changed. During operation, the device is typically run at low speed under no-load or standard load conditions to detect its vibration. Subsequently, counterweights are added, removed, or moved at the corresponding positions on the counterweight rod B9. The counterweight bar B9 is fixed in a position on the rod until the rotating system runs smoothly at the rated operating speed and the vibration is significantly reduced. The counterweight bar B9 is usually arranged symmetrically to ensure that the center of mass of the adjusted system coincides with the axis of rotation. This can eliminate or greatly reduce the centrifugal force and dynamic load caused by mass eccentricity to a certain extent. This dynamic balance adjustment mechanism enables the device to adapt to changes in working conditions such as different specifications of yarn tube B53 and different winding amounts of winding tape, and always maintain good dynamic balance performance. This not only improves the stability, reliability and service life of the equipment, but also allows for higher unwinding speeds with lower drive power, thereby improving production efficiency.

[0079] In this embodiment, the unwinding servo motor B31 not only drives the entire unwinding rotating assembly B2 to rotate around the fiber axis to achieve reverse spiral peeling of the winding tape, but also provides a unified rotating carrier for the yarn tube winding unit B5 and the yarn laying unit B6 through the rigid structure of the fixed disk support shaft mounting unit B4, enabling them to revolve accordingly. Through the second torque motor B8 integrated on the mounting unit B4 and the mechanical linkage design, the constant tension active winding of the yarn tube B53 and the automatic reciprocating yarn laying of the lead wire B63 are realized in the revolving state. The three process actions of peeling, winding, and yarn laying are coupled in space and time through the same rotating motion carrier. The integrated design of functional decomposition and collaborative control is achieved by the embedded second torque motor B8 and mechanical transmission, which enables the device to complete the fully automated operation from peeling to neat recycling, significantly improving the system compactness, collaborative accuracy and energy efficiency ratio.

[0080] In a preferred embodiment, the fixed-length cutting device 5 includes a cutting machine fixed frame 51 and a cutting machine assembly 52 slidably disposed on the cutting machine fixed frame 51. A saw blade protective cover 53 and two guide rails 54 are fixedly disposed on the cutting machine assembly 52. ​​A double downward pressure cylinder 55 is disposed on the saw blade protective cover 53 for fixing the fiber reinforcement body. A cutting cylinder (not shown) and a cutting blade (not shown) are disposed inside the cutting machine assembly 52. ​​The cutting cylinder can push the cutting blade to move upward or downward. When moving upward, the fiber reinforcement body is cut off.

[0081] Adjustable brackets 56 are slidably mounted on two guide rails 54. Fixed baffles 57 and fixed plates 58 are mounted on the adjustable brackets 56. A clamping cylinder 59 is fixedly mounted on the fixed plate 58. A pressure plate 591 is connected to the piston end of the clamping cylinder 59. The pressure plate 591 is correspondingly arranged with the fixed baffles 57. The fiber rib body is located between the pressure plate 591 and the fixed baffles 57.

[0082] The cutting machine assembly 52 is equipped with a push cylinder (not shown). One end of the push cylinder is connected to the cutting machine fixed frame 51, and the other end of the push cylinder is connected to the cutting machine assembly 52.

[0083] It also includes a turning device 6, which includes a turning machine 61, a turning cylinder 62, and a turning unit 63 hinged to the turning machine 61. One end of the turning cylinder 62 is hinged to the turning machine 61, and the other end of the turning cylinder 62 is hinged to the turning unit 63. The turning unit 63 includes a turning frame 64, a first baffle unit 65 and a second baffle unit 66 disposed above the turning frame 64, and a turning mechanism is provided between the first baffle unit 65 and the second baffle unit 66. The stroke adjustment plate 67 is fixedly connected to the push rod 68 on the cutting machine assembly 52. ​​The first baffle unit 65 is fixedly connected to the push rod 68. The first baffle unit 65 includes a stripping plate 651 and a connecting plate 652 fixedly installed on the push rod 68. A cutting baffle plate 653 is slidably arranged between the stripping plate 651 and the connecting plate 652. A baffle plate cylinder 654 is fixedly installed on the connecting plate 652. The piston end of the baffle plate cylinder 654 is connected to the cutting baffle plate 653.

[0084] The second material blocking unit 66 includes a flip-plate baffle 661, which is fixedly connected to the flip-plate stroke adjustment plate 67.

[0085] When the fiber reinforcement body is continuously conveyed into the cutting area by the traction device, the front end of the fiber reinforcement body first passes through the saw blade protection cover 53 of the cutting machine assembly 52 and continues to extend forward until it hits the fixed baffle 57, which is pre-set in position by the adjusting bracket 56. At this time, the extension length of the fiber reinforcement body is the set cutting length. Subsequently, the clamping cylinder 59 on the fixed plate 58 is activated, driving the pressure plate 591 and the fixed baffle 57 to firmly clamp the fiber reinforcement body. At the same time, the cylinder rod of the double downward pressing cylinder 55 on the saw blade protection cover 53 extends to press the fiber reinforcement body from above, achieving multiple fixation. Immediately afterwards, the pushing cylinder inside the cutting machine assembly 52 is activated, pushing the entire cutting machine assembly 52 (including the saw blade protection cover 53) to move forward. The cover 53, guide rail 54, and adjusting bracket 56 fixed thereon slide to one side relative to the clamped fiber reinforcement along the guide rail 54 on the fixed frame 51 of the cutting machine. During this synchronous sliding process, the push rod 68 installed on the cutting machine assembly 52 drives the first baffle unit 65 (including the cutting baffle plate 653, the stripping plate 651, etc.) and the second baffle unit 66 fixedly connected thereto to move together. When the sliding distance of the cutting machine assembly 52 reaches the preset cutting length (i.e., the distance from the initial position of the fixed baffle plate 57 to the cutting point), the cutting cylinder inside it is activated, driving the cutting blade to move upward. The high-speed rotating cutting blade cuts the fiber reinforcement body. After the cutting is completed, the cutting blade descends and resets. The double-pressing cylinder 55 and clamping cylinder 59 successively release the fixing of the cut fiber segment. At this time, the cut fiber segment continues to move forward under the push of the subsequently continuously conveyed fiber segment; its front end first contacts the flipping baffle 661 of the second baffle unit 66 and pushes it to rotate around the axis. When the rotation angle reaches the position set by the flipping stroke adjustment plate 67, the flipping signal is triggered, and the flipping cylinder 62 then acts, pulling the flipping unit 63 hinged to the flipping machine 61 to flip as a whole, so that its bottom plate opens to form a dropping slope; at the same time, the baffle cylinder 654 of the first baffle unit 65 retracts, driving the cutting baffle 653 along the guide between the stripping plate 651 and the connecting plate 652. As the rail 54 rises, the cut rebar segment that was originally leaning against the cutting baffle 653 also rises. When its upper surface contacts the fixed stripper plate 651, it is resisted and detaches from the cutting baffle 653. Under the action of gravity, it slides down the ramp of the opened tilting unit 63, completing the automatic collection. Finally, the tilting cylinder 62 reverses its action to reset the bottom plate of the tilting unit 63, and the baffle cylinder 654 extends to reset the cutting baffle 653. At the same time, the cutting machine assembly 52 slides back to the initial position under the drive of the push cylinder. The entire system is ready for the next cutting and tilting cycle, realizing the mechanized and automated continuous operation of the entire process from fixed length, clamping, cutting to automatic triggering of material dropping.

[0086] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A fiber- reinforced-pultrusion production line, characterized in that, In sequence along the advancing direction of the fiber tendon, there are: a preforming device (1) for bundling and preforming the fiber bundle after impregnation of resin, forming a compact fiber bundle assembly; a winding device (2) arranged at the output end of the preforming device (1) for covering the fiber bundle assembly with a spiral winding tape to form a semi-finished tendon material with a tape winding layer; a heating and curing mold (3) receiving the semi-finished tendon material from the winding device (2) for heating and curing the semi-finished tendon material under the constraint of the heating and curing mold (3) to form a cured tendon material with a thread structure; an unwinding device (4) arranged at the output end of the heating and curing mold (3) for continuously stripping and synchronously winding the winding tape on the surface of the cured tendon material to form a fiber tendon body; a fixed-length cutting device (5) located on the output path of the unwinding device (4) for fixed-length cutting of the fiber tendon body. The winding device (2) comprises a winding frame body (A1) and a rotating assembly (A2) which is rotatably mounted on the winding frame body (A1); The rotating assembly (A2) comprises at least one winding assembly (A3) which is mounted on the rotating assembly (A2) and rotates synchronously with the rotating assembly (A2); The winding assembly (A3) comprises a winding tape fixing disc (A31), a winding tape roll (A32) and a clamping mechanism (A33) which is integrally arranged on the winding tape fixing disc (A31), the clamping mechanism (A33) having an expansion part (A4) for radially expanding the central hole of the winding tape roll (A32) and a gland part (A5) for applying axial compression force to the winding tape roll (A32); The rotating assembly (A2) comprises a rotating shaft (A21), a rotating bracket (A22) and a driving member (A23), the rotating shaft (A21) being rotatably mounted on the winding frame body (A1), the rotating bracket (A22) being fixedly connected with the rotating shaft (A21), and the driving member (A23) being mounted on the winding frame body (A1) for driving the rotating shaft (A21) to rotate; The rotating shaft (A21) is a hollow structure with open ends, and a winding hole (A24) is formed at the middle position of the rotating shaft (A21); Further comprising an inner mold pipe assembly (A6) comprising a front inner mold pipe (A61) and a rear inner mold pipe (A62) arranged on the advancing path of the fiber bundle assembly, the front inner mold pipe (A61) and the rear inner mold pipe (A62) being arranged in the rotating shaft (A21) and fixedly connected with the winding frame body (A1), respectively, the front inner mold pipe (A61) and the rear inner mold pipe (A62) being hollow structures for providing axial support for the fiber bundle assembly, and the area between the front inner mold pipe (A61) and the rear inner mold pipe (A62) forming a working area for winding the winding tape.

2. Fibrous tendon pultrusion line according to claim 1, characterized in that: The preforming device (1) comprises a resin impregnation structure (11), a braiding machine (12) and / or a winding machine (13), the resin impregnation structure (11) is arranged upstream of the braiding machine (12) or winding machine (13) and is used for resin impregnation of fiber bundles; The resin impregnation structure (11) comprises a glue tank (111) for containing resin, a yarn passing plate (112) and a yarn separating unit (113) for guiding and separating fiber bundles; the braiding machine (12) or winding machine (13) is used for braiding or winding the fiber bundles impregnated with resin.

3. Fibrous tendon pultrusion line according to claim 2, characterized in that: The expansion part (A4) includes a first screw rod (A41a) fixedly installed on the axis of the winding belt fixing disc (A31), a first ring sleeve (A42a) is sleeved on the first screw rod (A41a), and a plurality of first expansion claws (A43a) are arranged around the first ring sleeve (A42a); A fixing ring (A44a) is fixedly arranged on the winding belt fixing disc (A31), a plurality of first sliding bars (A45a) are slidably connected in the fixing ring (A44a), one end of the first sliding bar (A45a) is connected with the corresponding first expansion claw (A43a), and the other end of the first sliding bar (A45a) is hingedly connected with a first connecting piece (A46a), and the free end of the first connecting piece (A46a) is hingedly connected with the first ring sleeve (A42a); The first screw rod (A41a) is threadedly connected with a first locking sleeve (A47a), and the first locking sleeve (A47a) can drive the first ring sleeve (A42a) to move; The gland part (A5) includes a winding belt gland (A51) sleeved outside the fixing ring (A44a), the winding belt gland (A51) is located on the upper surface of the winding belt coiled material (A32), the winding belt gland (A51) is provided with a gland connecting sleeve (A52), and the gland connecting sleeve (A52) is threadedly connected with the first screw rod (A41a); The winding belt fixing disc (A31) is rotationally installed on the rotating support (A22), a first torque motor (A7) is fixedly arranged on the other side of the rotating support (A22), and the output shaft of the first torque motor (A7) penetrates the rotating support (A22) and is fixedly connected with the winding belt fixing disc (A31) in a same shaft manner; The number of the winding assemblies (A3) is two, and the two winding assemblies (A3) are installed on the rotating support (A22).

4. The fiber tendon pultrusion line of claim 2, wherein: The expansion part (A4) includes a second screw rod (A41b) fixedly installed on the axis of the winding belt fixing disc (A31), a second ring sleeve (A42b) is sleeved on the second screw rod (A41b), the second ring sleeve (A42b) can move up and down along the axial direction of the second screw rod (A41b), and a plurality of second expansion claws (A43b) are arranged around the second ring sleeve (A42b); The second expansion claw (A43b) and the second ring sleeve (A42b) are provided with a second sliding bar (A45b), one end of the second sliding bar (A45b) is connected with the corresponding second expansion claw (A43b), the other end of the second sliding bar (A45b) is hinged with a second connecting piece (A46b), the free end of the second connecting piece (A46b) is hinged with the second ring sleeve (A42b); a plurality of tension springs (A44b) are arranged between the second sliding bar (A45b) and the second connecting piece (A46b), the free end of the tension spring (A44b) is connected with the second screw rod (A41b), the tension spring (A44b) has a tendency to drive the second expansion claw (A43b) to retract; The second screw rod (A41b) is slidably connected with a second locking sleeve (A47b), the second locking sleeve (A47b) can drive the second ring sleeve (A42b) to move; The gland part (A5) comprises a winding belt gland (A51), the second locking sleeve (A47b) is formed with a gland part (A521), the bottom of the gland part (A521) abuts against the winding belt gland (A51), and the second locking sleeve (A47b) and the second expansion claw (A43b) are provided with a connecting rope (A53); The winding belt fixing disc (A31) is fixedly installed on the rotating support (A22), the other side of the rotating support (A22) is fixedly provided with a stepping motor (A8), the output shaft of the stepping motor (A8) penetrates the rotating support (A22) and the winding belt fixing disc (A31) and is fixedly connected with the second screw rod (A41b) coaxially.

5. Fibrous tendon pultrusion line according to claim 4, characterized in that: The heating and curing mold (3) comprises a shaping table and a plurality of forming molds (31) arranged on the shaping table, a heating sleeve is arranged in each forming mold (31), and a semi-finished product reinforcing bar is sequentially connected with the unwinding device (4) by penetrating each forming mold (31).

6. Fibrous tendon pultrusion line according to claim 5, characterized in that: The unwinding device (4) comprises an unwinding frame body (B1), an unwinding rotating assembly (B2) and an unwinding driving assembly (B3), the unwinding rotating assembly (B2) and the unwinding driving assembly (B3) are installed on the unwinding frame body (B1), the unwinding rotating assembly (B2) can rotate around the fiber reinforcing bar axis to reversely spiral strip the winding belt on the surface of the fiber reinforcing bar, and the unwinding driving assembly (B3) is connected with the unwinding rotating assembly (B2) and is used for driving the unwinding rotating assembly (B2) to rotate; The unwinding rotating assembly (B2) comprises a mounting unit (B4), a bobbin winding unit (B5) arranged on the mounting unit (B4), a wire arranging unit (B6) and an unwinding driving unit (B7), the unwinding driving unit (B7) is used for driving the bobbin winding unit (B5) to rotate and simultaneously driving the wire arranging unit (B6) to move, and the wire arranging unit (B6) is used for uniformly and reciprocally arranging the winding belt along the axial direction of the bobbin winding unit (B5). The mounting unit (B4) comprises a first supporting shaft (B41) and a second supporting shaft (B42) which are rotatably mounted on the unwinding frame body (B1), the first supporting shaft (B41) and the second supporting shaft (B42) are coaxially arranged and internally hollow, forming a central passage for the fiber rod to pass through, the end of the first supporting shaft (B41) is coaxially fixedly connected with a first fixed disc (B43), the end of the second supporting shaft (B42) is coaxially fixedly connected with a second fixed disc (B44), the yarn tube winding unit (B5) and the wire arranging unit (B6) are arranged between the first fixed disc (B43) and the second fixed disc (B44), and the first fixed disc (B43) and the second fixed disc (B44) are provided with through holes which are in communication with the central passage, so that the fiber rod passes through in sequence; The unwinding driving assembly (B3) comprises an unwinding servo motor (B31), a driving synchronous wheel (B32) is connected to the output shaft of the unwinding servo motor (B31), a driven synchronous wheel (B33) is coaxially fixedly connected to the second supporting shaft (B42) and / or the first supporting shaft (B41), and a belt (B34) is tensioned between the driving synchronous wheel (B32) and the driven synchronous wheel (B33); The yarn tube winding unit (B5) comprises a mounting tube (B51), a pressing clamp (B52), a yarn tube (B53) and a yarn tube seat (B54), the mounting tube (B51) is detachably mounted on the first fixed disc (B43), the pressing clamp (B52) is slidably arranged in the mounting tube (B51), the end of the pressing clamp (B52) extends out of the mounting tube (B51) for connecting with the yarn tube (B53), and the yarn tube (B53) and the yarn tube seat (B54) are detachably connected; Further comprising a rotating head (B55), the rotating head (B55) comprises a stator disc (B551) and a rotor disc (B552), the stator disc (B551) is rotatably connected with the rotor disc (B552), the stator disc (B551) is connected with the end of the pressing clamp (B52), a spring (B553) is sleeved on the pressing clamp (B52), one end of the spring (B553) is connected with the mounting tube (B51), the other end of the spring (B553) is connected with the stator disc (B551), and the spring (B553) has a tendency to drive the pressing clamp (B52) away from the mounting tube (B51); The rotor disc (B552) is connected with a pressing head (B554), the pressing head (B554) can be clamped into the yarn tube (B53) and detachably connected with the yarn tube (B53).

7. Fibrous tendon pultrusion line according to claim 6, characterized in that: The unwinding driving unit (B7) comprises a second torque motor (B8) which is fixedly mounted on the second fixed disc (B44), and the output shaft of the second torque motor (B8) is connected with the yarn tube seat (B54). The wire arrangement unit (B6) comprises two wire arrangement blocks (B61), a wire arrangement shaft (B62) and a lead wire device (B63), the two wire arrangement blocks (B61) are fixedly installed on the first fixed disc (B43) and the second fixed disc (B44) respectively, the wire arrangement shaft (B62) is rotatably installed on the two wire arrangement blocks (B61), one end of the wire arrangement shaft (B62) penetrates through the first fixed disc (B43) and is connected with a driven sprocket (B64), the bobbin seat (B54) is coaxially fixedly connected with a driving sprocket (B65), and the driving sprocket (B65) and the driven sprocket (B64) are provided with a chain (B66); Along the axial direction of the wire arrangement shaft (B62), the outer periphery of the wire arrangement shaft (B62) is formed with two spiral guide grooves, the two spiral guide grooves are connected end to end, and the spiral directions of the two spiral guide grooves are opposite and the phases are staggered; The lead wire device (B63) is provided with a sliding pin matched with the spiral guide groove, when the wire arrangement shaft (B62) rotates, the sliding pin moves along the track of the spiral guide groove, thereby driving the lead wire device (B63) to move reciprocatingly along the axial direction of the wire arrangement shaft (B62), so as to realize the uniform reciprocating arrangement of the winding belt on the surface of the bobbin (B53); A guide rod (B67) is arranged between the two wire arrangement blocks (B61), and the lead wire device (B63) is slidably connected with the guide rod (B67); The lead wire device (B63) is provided with a guide wheel or a guide roller (B631), the winding belt is guided into the bobbin winding unit (B5) through the guide wheel or the guide roller (B631) after being peeled off from the fiber rod, and the installation angle of the guide wheel or the guide roller (B631) can be adjusted to adapt to different winding belt widths or in-out belt directions; Further comprising a dynamic balance adjusting assembly, the dynamic balance adjusting assembly comprises at least one counterweight rod (B9), the counterweight rod (B9) is installed between the first fixed disc (B43) and the second fixed disc (B44), and a counterweight block is detachably connected to the counterweight rod (B9).

8. Fibrous tendon pultrusion line according to claim 7, characterized in that: The fixed-length cutting device (5) comprises a cutting machine fixed frame (51) and a cutting machine assembly (52) slidably arranged on the cutting machine fixed frame (51), the cutting machine assembly (52) is fixedly provided with a saw blade protection cover (53) and two guide rails (54), the saw blade protection cover (53) is provided with double downward pressing air cylinders (55) for fixing the fiber rod body, and the cutting machine assembly (52) is internally provided with a cutting cylinder and a cutting blade, the cutting cylinder can drive the cutting blade to move upward or downward, and the fiber rod body is cut when the cutting blade moves upward; Two guide rails (54) are provided with an adjusting support (56) slidingly arranged thereon, the adjusting support (56) is provided with a fixed baffle (57) and a fixed plate (58), the fixed plate (58) is fixedly installed with a clamping cylinder (59), a piston end of the clamping cylinder (59) is connected with a pressing plate (591), the pressing plate (591) is arranged corresponding to the fixed baffle (57), and the fiber body is located between the pressing plate (591) and the fixed baffle (57); The cutting machine assembly (52) is provided with a pushing cylinder, one end of the pushing cylinder is connected with the cutting machine fixed frame (51), and the other end of the pushing cylinder is connected with the cutting machine assembly (52).

9. Fibrous tendon pultrusion line according to claim 8, characterized in that: Further comprising a material turning device (6), the material turning device (6) comprises a material turning machine (61), a material turning cylinder (62) and a material turning unit (63) hinged on the material turning machine (61), one end of the material turning cylinder (62) is hinged with the material turning machine (61), and the other end of the material turning cylinder (62) is hinged with the material turning unit (63); The material turning unit (63) comprises a material turning frame body (64), a first material blocking unit (65) and a second material blocking unit (66) arranged above the material turning frame body (64), a material turning stroke adjusting plate (67) is arranged between the first material blocking unit (65) and the second material blocking unit (66), a push rod (68) is fixedly connected on the cutting machine assembly (52), and the first material blocking unit (65) and the second material blocking unit (66) are fixedly connected with the push rod (68); The first material blocking unit (65) comprises a material stripping plate (651) and a connecting plate (652) fixedly installed on the push rod (68), a cutting material blocking plate (653) is slidingly arranged between the material stripping plate (651) and the connecting plate (652), a material blocking plate cylinder (654) is fixedly arranged on the connecting plate (652), and a piston end of the material blocking plate cylinder (654) is connected with the cutting material blocking plate (653); The second material blocking unit (66) comprises a turning plate material blocking plate (661), and the turning plate material blocking plate (661) is fixedly connected with the material turning stroke adjusting plate (67).

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