624 results about "Pultrusion" patented technology

The invention discloses an electromagnetic heating and heat preservation system for a wind power blade girder plate pultrusion die, and relates to the technical field of thermal field regulation and control, comprising the following steps: activating an electromagnetic coil array to generate an alternating magnetic field, synchronously starting a heat preservation layer device, and triggering a gradient heating mode when the temperature of the die reaches a preset threshold value; a mold temperature field is monitored in real time, the power of an electromagnetic coil and parameters of a heat preservation layer are dynamically adjusted, a target temperature gradient is established, an electromagnetic heating device and a mechanical traction device are linked in the pultrusion process, and heat dissipation control is triggered according to the material flowing state; and after heat dissipation control is completed, the main power source is cut off, the mode is switched to the waste heat recovery mode, mold waste heat is guided into the energy storage device, and the cooling rate is controlled. According to the method, accurate mode switching of electromagnetic heating from uniform temperature rise to gradient heating is achieved through cooperation of magnetic field activation and a gradient triggering mechanism, and the temperature gradient establishment speed and the morphological stability are effectively improved in cooperation with power regulation and control partition differentiation power instruction and thermal insulation layer parameter dynamic matching.

The invention relates to the technical field of data analysis, in particular to a dynamic mold pressure data analysis system for polyurethane pultrusion production, which comprises a mold pressure data capture module, a pressure gradient trend calculation module, a mold abnormal pressure identification module, a mold pressure adjustment data module and a multi-dimensional pressure state monitoring module. According to the invention, through data capture of the multi-node pressure sensor, high-precision real-time monitoring of internal pressure of the mold is realized, data integrity is enhanced, limitation of single data is avoided, pressure feature identification of different areas of the mold is realized, abnormality judgment accuracy is improved, normal fluctuation and abnormal accumulation are distinguished, and abnormal areas are accurately locked; temperature and ultrasonic signal analysis is introduced, curing abnormity and bubble aggregation are identified, the monitoring range is expanded, the data acquisition precision, the analysis depth and the regulation and control capability are improved, abnormity detection is more scientific, regulation and control are more intelligent, resin flowing is optimized, and the quality fluctuation risk is reduced.

The invention discloses an intelligent control method and device for composite material curing, equipment, a storage medium and a program product, and relates to the technical field of material processing, and the intelligent control method for composite material curing comprises the steps that the material dielectric constant of a composite material and temperature data in the curing process are obtained; determining the regional curing degree of the composite material based on the dielectric constant of the material and the temperature data; and carrying out traction speed control on the curing process of the composite material according to the regional curing degree. The curing process is reflected in real time through changes of material dielectric constants and temperature data, and the traction speed is dynamically adjusted in combination with an external thermal imaging temperature value, so that the traction speed is synchronous with the curing reaction, and the yield of pultrusion products is improved.

The invention relates to the technical field of polyurethane pultrusion, in particular to a preparation method of a polyurethane pultrusion resin composite material, which comprises the following steps: drawing glass fiber into a glue dipping tank filled with polyurethane resin for dipping; heating the impregnated glass fiber in a pre-forming mold to obtain a pre-cured gel forming body; when it is judged that preparation of the pre-cured gel forming body does not meet the preset standard according to the scattering intensity standard deviation of the pre-cured gel forming body, preparation parameters are adjusted; the pre-cured gel forming body meeting the preset standard is put into a pultrusion mold for pultrusion, and a cured forming body is obtained; when it is judged that the preparation of the cured molded body does not meet a preset standard according to the average ripple amplitude, determining an adjustment strategy for the preparation of the cured molded body to do not meet the standard according to the curvature variance of the surface lines; and pulling and naturally cooling the cured molded body meeting the preset standard to obtain the polyurethane resin composite material. The preparation efficiency of the resin composite material is improved.

The invention discloses a vacuum-assisted pultrusion preforming device for a composite material. The vacuum-assisted pultrusion preforming device comprises a yarn threading plate, a gum dipping tank, a gum extruding roller and a vacuum-assisted preforming mold which are sequentially arranged in the pultrusion direction, wherein fiber bundles penetrate through the yarn threading plate in a layered mode, the gum dipping tank is used for containing resin, and the gum extruding roller is used for extruding redundant resin. The vacuum auxiliary preforming mold is provided with a preforming mold cavity, a vacuum cavity is formed in one section of the preforming mold cavity of the vacuum auxiliary preforming mold, an air exhaust hole is formed in the upper portion of the vacuum cavity, and a semi-permeable membrane allowing gas to pass through but blocking resin to pass through is arranged at the air exhaust hole. And the air exhaust hole is externally connected with a vacuumizing device. The vacuum-assisted pultrusion preforming device can effectively discharge microbubbles in resin and fiber bundles, effectively control uniform distribution of the content of the resin and remarkably promote full infiltration of high-viscosity resin to fibers.

The utility model discloses a dipping device for pultrusion production of a glass fiber reinforced plastic composite fence, and relates to the technical field of dipping devices. The wire guiding devices are symmetrically and fixedly connected to the top end of the liquid storage tank; the outer wall of the pressing device is fixedly connected with the inner wall of the liquid storage tank, the wire guiding device is arranged, glass fiber filaments can be effectively guided to enter the liquid storage tank, it is ensured that the glass fiber filaments are sequentially impregnated, production interruption caused by entanglement of the glass fiber filaments is avoided, the production efficiency is improved, and the production cost is reduced. By means of the arrangement of the adjusting disc and the limiting disc, the distance can be adjusted according to the thickness of different glass fibers, multiple glass fiber filaments are prevented from being tangled, it is guaranteed that each glass fiber filament can be evenly impregnated, and therefore the quality stability of products is improved.

The invention provides a straight groove type gum dipping system suitable for a pultrusion process, comprising: a gum injection module for performing gum dipping operation on fibers; the detection module is used for monitoring and controlling the impregnation quality of the glue injection module by using a camera device on the outer side of the glue injection module, controlling the working state of the glue injection module by using a floating ball sensing device on the inner side of the glue injection module, and evaluating the impregnation quality through a built-in visual recognition algorithm; wherein the camera device monitors the liquid level of the glue solution in real time and feeds back the change rate of the liquid level, and working parameters of the camera device are adjusted according to the change rate of the liquid level; and the interaction module is used for feeding back the evaluation result of the detection module to the client, and a worker adjusts various parameters in the gum dipping operation according to the evaluation result. The automatic detection device has the beneficial effects that through the design that the camera device is combined with the floating ball to sense the liquid level of the glue solution, automatic detection of the production quality is completed, the working efficiency is improved, and the labor cost is reduced.

The invention relates to the field of composite pultrusion machines, in particular to a self-adaptive pultrusion system of a composite pultrusion machine and a control method of the self-adaptive pultrusion system. The self-adaptive pultrusion system comprises a pultrusion mold, a drawing device, an ultrasonic detection module and a control module; the ultrasonic detection module is used for emitting ultrasonic waves and receiving ultrasonic signals penetrating through the composite material so as to obtain acoustic parameters related to the curing degree of the composite material; and the control module is configured to calculate the current curing degree of the composite material based on the acoustic parameters, compare the current curing degree with a preset target curing degree, and adjust the drawing speed of the drawing device in real time according to a comparison result so as to perform closed-loop feedback control on the curing process of the composite material. According to the embodiment of the invention, the ultrasonic technology is utilized to carry out online and nondestructive detection on the curing degree of the composite material, and the closed-loop feedback control is carried out on the drawing speed based on the detection result, so that the synchronous optimization of the production efficiency and the product quality is realized.

The invention relates to the field of carbon fiber epoxy resin modification and preparation, in particular to a pultrusion epoxy resin composition and application thereof, an epoxy resin material and a preparation method and application of the epoxy resin material. Wherein the component A comprises an epoxy resin mixture, a diluent, a coupling agent, a modified carbon nanotube and a release agent; the epoxy resin mixture comprises at least two of polyfunctional epoxy resin, rigid particle modified bisphenol epoxy resin, hydantoin epoxy resin and alicyclic epoxy resin; the component B comprises a curing agent, a toughening agent, a composite accelerant and a catalyst; the composite accelerant is selected from at least two of modified imidazole, chromium acetylacetonate and triphenyl ethyl phosphonium bromide; the composition overcomes the defects that the viscosity of an epoxy resin system is relatively high and all the components need to be mixed at relatively high temperature, and the heat resistance and the strength retention rate are high while the toughness is improved.

The utility model discloses an anti-deformation glass fiber reinforced plastic pultrusion profile traction device, which relates to the technical field of glass fiber reinforced plastic pultrusion, and is characterized by comprising a bottom plate and four supporting legs fixedly arranged on the bottom surface of the bottom plate, and an extrusion mechanism and a traction mechanism are arranged above the bottom plate; the device has the technical effects that the extrusion mechanism is provided with a plurality of extrusion rollers with adjustable height, an electric telescopic rod with an anti-deformation function and two groups of sliding rollers, so that on one hand, the height of the extrusion rollers can be adjusted according to actual requirements, and the applicability of the device is enhanced; on the other hand, in the extruding and pulling process of the glass fiber reinforced plastic, the front and rear ends of the glass fiber reinforced plastic are effectively limited through electric telescopic rods and sliding rollers, deformation is prevented, meanwhile, an electric push rod and a telescopic connecting rod on the top face of a fixing frame ensure stable horizontal sliding of a lifting frame, and a limiting rod and a control rod on a connecting frame are matched to make a connecting frame and the sliding rollers move accurately and stably.

The invention discloses a composite material barrel shell, a spliced buoy and a floating mat structure, the composite material barrel shell comprises a barrel shell body which is continuously formed by adopting a fiber reinforced material through a pultrusion process, and a mounting plane of a plane structure is formed at the top of the barrel shell body; the two sides, in the width direction of the barrel shell body, of the installation plane protrude to form installation turned-over edges. The spliced buoy comprises a plurality of composite barrel shells and spliced plugs, and barrel shell bodies are linearly arranged in the length direction. Due to the fact that the whole top face of the barrel shell body is the installation plane of the plane structure, assembling connection with an upper structure is facilitated, all the installation planes and the installation turnups can support the upper structure, and the splicing type floating barrel can be conveniently and flexibly spliced to obtain the splicing type floating barrel with the needed length according to actual requirements. And meanwhile, the splicing operation is simple, and the splicing efficiency is high. The floating mat structure can be used as various water platforms and is good in universality, high in structural strength and good in weather resistance.

The invention belongs to the technical field of pultrusion, and discloses a J-shaped beam forming method based on a pultrusion RTM process and a J-shaped beam. The invention discloses a J-shaped beam forming method based on a pultrusion RTM process. The J-shaped beam forming method comprises the steps that a laying layer structure of a J-shaped beam is set; drawing the fiber fabric according to the layering structure; drawing the fiber fabric into a preforming mold for preforming; and pulling the pre-formed fiber fabric into a forming mold for final forming. A traditional autoclave forming process of the J-shaped beam is changed into a pultrusion forming process, a laying layer structure of the J-shaped beam is designed according to the structural stress and thickness of the J-shaped beam and is converted into a yarn fiber fabric of a pultrusion RTM process, and the yarn fiber fabric is subjected to preforming and final forming through a preforming mold and a forming mold. And the repeated heating and cooling process in the curing process in the autoclave forming process is simplified, and the production efficiency of the J-shaped beam is improved. The J-shaped beam disclosed by the invention has the advantages of net profile boundary and no need of additional processing.

A pre-stressed pultruded glass fiber reinforced thermoplastic lumber suitable for demanding construction environments, particularly marine and outdoor applications, features a solid core composed of a thermoplastic, such as PVC, blended with 15% to 40% by weight of pelletized chopped strand glass fibers. Pre-tensioned elongated continuous fiber reinforcements are embedded within and coextensive with this core via pultrusion. The presence of pelletized and fragmented glass fibers within the core enhances the mechanical coupling between the core and the continuous reinforcements, facilitating the transfer of tensile stress to the core as compressive pre-stress. An outer co-extruded cap stock provides protection against UV and IR radiation and enhances impact resistance. The resulting lumber exhibits a high modulus of elasticity (exceeding 800,000 psi), at least 60% fiber length retention, improved durability, and resistance to common wood degradation factors without the use of toxic chemicals.

The invention discloses a forming method of a high-bending-strength composite insulator winding pipe, which comprises the following steps: firstly, an inner layer structure of the insulator winding pipe is prepared by a pultrusion process, the inner layer structure is cylindrical, the outer diameter of the inner layer structure is matched with the inner diameter of the winding pipe, and a plurality of uniformly distributed cambered surface bulges are formed on the surface of the inner layer structure; a reinforced interface layer is formed on the outer wall of the inner layer structure, is formed by aramid fiber preform fabric, and is treated by a modified epoxy glue solution by adopting a three-dimensional orthogonal weaving process; the interface layer is tightly attached to the inner layer structure, epoxy / polyurethane glue liquid is coated outside the interface layer, and a semi-finished winding pipe product is formed; the winding pipe semi-finished product is subjected to pre-curing treatment, a small number of uncured groups are reserved, external packaging is conducted through an injection molding method, a winding pipe blank with an outer layer structure is obtained, and the outer diameter of the winding pipe blank is matched with that of the finished product; and demolding the winding pipe blank, fettling and carrying out quality inspection to obtain a finished product of the high-bending-strength composite insulator winding pipe. The method can remarkably improve the mechanical strength and durability of the winding pipe, and has wide application prospects.

The invention provides a coordinated control method and system for a pultrusion line, and belongs to the technical field of plastic state substance processing. The production requirement information is analyzed, and a weaving instruction is sent to a weaving machine to weave a net-shaped layer; controlling a winding machine to wind wefts to obtain a fiber braided fabric; injecting liquid resin into the fiber braided fabric; and the fiber braided fabric injected with the liquid resin is heated, cured and formed through pultrusion equipment, speed coordination control is conducted based on a traction machine, and a target production product is pulled out through pultrusion and traction. According to the pultrusion line coordination control method and system, the fiber braided fabric is braided and wound on the basis of the production requirement information, the liquid resin is injected into the fiber braided fabric, the fiber braided fabric injected with the liquid resin is heated, cured and formed through the pultrusion equipment, and speed coordination control is conducted on the basis of the traction machine; and a target production product is pulled out through pultrusion, so that the production efficiency of the extruded and drawn wire is greatly improved.

The invention discloses a multi-source data-driven intelligent optimization method for a composite material pultrusion process. The method comprises the following steps: forming a multi-source process database by collecting process parameters and multi-working-condition simulation data obtained by simulation in real time; constructing a technological process LSTM prediction model based on a long short-term memory network, predicting quality, energy consumption and efficiency parameters of the product, and performing multi-target autonomous optimization to obtain a collaborative optimal solution set of the quality, energy consumption and efficiency of the product; according to the collaborative optimal solution set, a process scheme is generated, and an instruction is formed and issued; and according to the data of the staged multi-source process database, constructing a continuously learned data sample, updating and optimizing the process LSTM prediction model, and updating and optimizing the process decision-making scheme library. Compared with the prior art, the method has the advantages that autonomous decision, accurate control and continuous optimization of pultrusion process parameters are realized, so that the production efficiency is remarkably improved and the energy consumption is reduced on the premise of ensuring stable and reliable product quality.

The invention belongs to the field of photovoltaic materials, provides a preparation method and application of reinforced polyurethane resin for a photovoltaic frame, and solves the problem that the existing polyurethane resin for the photovoltaic frame cannot have excellent flame retardant property, water resistance, aging resistance and mechanical property at the same time. Comprising the following steps: carrying out a reaction on polytetrahydrofuran ether glycol and polyisocyanate to obtain a polyurethane prepolymer, and chemically grafting a phosphorus-containing compound onto a polyurethane main chain by using prepared 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, so as to obtain the flame-retardant polyurethane. Hydroxyl-terminated polydimethylsiloxane and polyhydric alcohol are used as part of flexible chain segments to be embedded into a polyurethane main chain, 2-(2-hydroxy-4-acryloyl)-2H-benzotriazole is added to serve as an anti-ultraviolet agent, and final polyurethane resin is obtained through reaction. And injecting the polyurethane resin and the glass fiber into a mold, and preparing the photovoltaic frame profile through a pultrusion process.

The invention discloses a pultrusion apparatus for manufacturing a vehicle component having ribs. The interior of the vehicle component is divided into a plurality of regions by at least one rib, and the vehicle component is formed of a composite material having a constant thickness. A pultrusion apparatus includes a molding unit configured to mold a vehicle member by applying a fiber and a nonwoven fabric while impregnating the fiber with a resin. The molding unit includes: an upper mold forming a space; a lower die disposed below the upper die and coupled to the upper die; and a mandrel configured to be inserted into a gap formed between the upper mold and the lower mold, and one end of the mandrel is fastened to the upper mold.

The invention discloses a device for preparing a continuous fiber reinforced thermoplastic resin composite prepreg wire rod, and belongs to the technical field of composite material manufacturing. The device comprises a continuous wire releasing system, a fiber pretreatment system, a resin impregnation system, a solution volatilization system, a wire shaping system and a post-treatment system. In the preparation process of the continuous fiber reinforced thermoplastic resin prepreg wire, the thermoplastic resin in the prepreg wire is fully wetted and uniformly distributed through the continuous activation treatment of the fiber pretreatment system and the homogenization extrusion impregnation process of the resin impregnation system. And continuous preparation of the 3D printing continuous fiber reinforced thermoplastic resin prepreg wire with high fiber content and low porosity can be realized through subsequent processes such as efficient volatilization of the solution volatilization system and multi-level pultrusion shaping of the shaping system. The mechanical property and the production efficiency of the 3D printing continuous fiber reinforced thermoplastic resin prepreg wire and the composite material thereof can be obviously enhanced, and meanwhile, the manufacturing scheme is stable and reliable.

The invention relates to the technical field of frame production, in particular to pultrusion production equipment for a fiber reinforced composite photovoltaic frame, which comprises a machine body serving as a carrier of the whole device, a mold mounted on the machine body, a bearing seat arranged on one side of the machine body, and a cutting mechanism mounted on the machine body and used for cutting along the outline of the photovoltaic frame. A track is fixedly connected to the end of the bearing column, a cutting machine is movably installed on the track, a connecting column is slidably connected into the reset groove, a supporting seat is fixedly connected to the connecting column, the cutting machine is installed on the supporting seat, and a transmission mechanism used for driving the cutting machine and the frame to move synchronously is further installed on the machine body. The transmission mechanism is arranged, in the synchronous moving and cutting process, the frames always keep stable moving speed and tension, the cutting machine can accurately cut according to the preset size, it is ensured that the length and shape of each frame meet the design requirement, and the size precision and consistency of products are improved.

The invention relates to the technical field of composite material engineering, and discloses a basalt fiber glass fiber reinforced plastic insulating arm and a preparation process thereof, and an arm body of an insulating plate is prepared by pultrusion and subsequent machining of the following components: 50-75 parts by mass of basalt fiber or fabric thereof; 25-50 parts by mass of an epoxy resin system; the flame retardant comprises 0.5-2 parts by mass of a coupling agent and 1-5 parts by mass of a flame retardant. The arm body is a square tubular object, one end of the arm body is provided with a diagonal plane, five first round through holes distributed in a Z shape are formed in one side wall, close to one end of the diagonal plane, of the arm body, and four second round through holes distributed in a square shape are formed in one side wall of the other end of the arm body. A reinforced framework is constructed by basalt fibers, an epoxy resin matrix is combined, and a pultrusion technology is adopted. The finished insulation arm not only shows the end part bearing capacity of about 1 ton and the high insulation level of 200 kilovolts, but also has the characteristics of excellent chemical corrosion resistance and light weight.

A deck board system for integrating artificial turf and drainage features includes a plurality of deck board panels, each with an extruded or pultruded panel body featuring an internal screw boss, an internal reinforcement strip, an overhang, a ledge, drainage openings on the topside, and underside openings. The system further comprises a finishing feature and an artificial turf layer. The overhang engages with adjacent panels, while the finishing feature straddles at least two panels and engages with the overhang. The artificial turf layer covers one or more deck board panels, providing a seamless and functional deck surface with integrated drainage capabilities.

The invention relates to the technical field of composite material preparation, and discloses a high-load composite material telegraph pole and a pultrusion preparation method thereof.The method comprises the steps of fiber configuration, resin matrix preparation, dipping, preforming, pultrusion and aftertreatment. Wherein the proportion of fibers for direct yarn feeding accounts for a high proportion of the total mass of the fibers, the fibers are distributed in the longitudinal direction of a product, the longitudinal reinforcing effect of the telegraph pole is guaranteed, the loading capacity and mechanical strength of the product are improved, meanwhile, the tension of the fibers is controlled through a tension control system, the stability of the fibers before dipping is guaranteed, and a fiber reinforcing system is optimized; the functional additive is added, and the functional additive comprises nano silicon dioxide subjected to plasma surface treatment and a silane coupling agent, so that the uniformity and dispersity of a resin matrix are improved, the interface bonding of fibers and resin is enhanced, and the overall performance of the composite material is improved.

The utility model discloses an impregnation system for a resin-fiber pultrusion composite material, which comprises a pressure chamber and a matched cover plate, the pressure chamber is enclosed by a bottom plate, a first wall plate, a third wall plate, a first side plate and a second side plate, and the first wall plate and the third wall plate are distributed at the left end, the right end, the front end and the rear end of the bottom plate; a second wallboard is arranged to divide the pressure chamber into a first pressure chamber and a second pressure chamber, a prefabricated mold is installed on the second wallboard, a fiber outlet is formed in the first wallboard, a second pipeline connector is arranged at the bottom of the first pressure chamber, and a fiber inlet and a first pipeline connector are formed in the cover plate. According to the utility model, a double-cabin structure is arranged to control the pressure in the first pressure cabin to be low positive pressure and the pressure in the second pressure cabin to be negative pressure, so that after fibers are fully infiltrated, excessive glue solution is removed through pultrusion, and inclusion bubbles and volatile matters are fully removed, thereby improving the quality of a resin-fiber pultrusion composite material product; and high pressure and strict sealing requirements of traditional high-pressure injection are reduced, and the device is suitable for the field of gum dipping.

The invention relates to the technical field of composite material forming, in particular to a pultrusion process and system based on resin-based constant-pressure control, and the pultrusion process comprises the following steps: fiber guiding gum dipping: selecting a normal-pressure mode or a closed mode; collecting die cavity pressure data and pultrusion force data in real time; the pressure data of the mold cavity are compared with a set interval, and the glue injection flow and / or the pultrusion speed are / is adjusted; and comparing pultrusion data with a set interval, reversely optimizing the pressure of the mold cavity based on tension feedback, and reducing the stress of the product, and the method has the following beneficial effects that the resin supply or pultrusion speed is adjusted in real time and the pressure of the mold cavity is kept constant by combining a dual-mode resin impregnation system (normal-pressure impregnation / closed glue injection) with a mold cavity pressure closed-loop control technology. A pressure-tension cooperative control model is innovatively provided, and internal stress distribution of the product is optimized. The embodiment verifies that the pultrusion force can be reduced by more than 15%, the bubble rate can be reduced by more than 30%, and the mechanical property and the production stability of the product can be obviously improved.

The invention relates to the field of automobile part manufacturing, in particular to an automobile seat cross beam reinforcing framework and a manufacturing method. The structure comprises a framework beam structure arranged between an automobile chassis and a seat cross beam, the structure is in a hollow beam shape with an inner cavity with two open ends, coating grooves are formed in the two sides of the upper end face and the lower end face, and SNS polystyrene foam is arranged in the grooves; the skeleton beam structure is provided with a first electrophoresis liquid tank, a second electrophoresis liquid tank and corresponding electrophoresis liquid holes, and is internally provided with a reinforcing beam; the framework beam structure is formed by a continuous fiber reinforced composite material containing polyurethane resin and a fiber reinforced body through mold closing pultrusion. The manufacturing method of the reinforced framework comprises the steps of fiber material arrangement, resin injection, pultrusion curing and the like. According to the application, the effects of reducing the weight of the seat, improving the comfort and torsion resistance of the seat, improving the electrophoresis quality, reducing the noise and vibration, realizing automatic production and improving the production efficiency and the product quality stability are achieved.

The invention discloses a high-modulus fiber hard rod woven preform and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a high-modulus fiber rod by adopting a pultrusion process; (2) designing and processing a weaving mold; (3) inserting and fixing the high-modulus fiber rods on the processing and weaving mold along the Z-axis direction to form a fiber rod array according to the size requirement of the prefabricated body; (4) a layer of X-axis fiber rods and a layer of Y-axis fiber rods are laid in the fiber rod array channel in the X-axis direction and the Y-axis direction respectively; forming a unit layer; (5) inserting + 45-degree and / or-45-degree fiber rods after the number of unit layers reaches 4-6; and (6) repeating the steps (4)-(5) until the designed height of the prefabricated body is reached to obtain the prefabricated body. According to the method, the boundary dimension and spacing of the fabric can be designed to the maximum extent, and the requirement for shape integrity of the prefabricated body is met; the obtained fabric is good in regularity, strong in designability, high in prefabricated body density, and high in overall stability and mechanical property.

The utility model provides a yarn guide device for pultrusion process, which comprises a plurality of layers of creels, the top of each layer of creel is detachably provided with a plurality of yarn guide plates along the X-axis direction, the yarn guide plates are provided with yarn threading holes side by side along the Y-axis direction, and the yarn threading holes are arranged in the X-axis direction. Yarn threading holes are formed in the yarn guide plates, the yarn threading holes in the yarn guide plates are sequentially increased progressively according to the number difference value of the yarn threading holes in the two adjacent yarn guide plates, the yarn guide device further comprises a fixing assembly used for assembling all the yarn guide plates into a whole in an attached mode, and when the yarn guide plates are assembled into the whole in an attached mode, the corresponding yarn threading holes in the yarn guide plates are coaxially formed and coincide. During yarn threading, the yarn guide plates are taken down and are tightly fixed together through the fixing assemblies, so that the corresponding yarn threading holes in all the yarn guide plates coincide, yarn bundles of yarn bundle rolls can conveniently penetrate through the corresponding yarn threading holes in the yarn guide plates at a time, rapid and accurate yarn threading of the yarn bundles can be achieved, a large amount of manpower is saved, yarn bundle crossing and fiber scratching and fuzzing during yarn threading are avoided, and the yarn threading efficiency is improved. And even the fiber is snapped.

The utility model discloses a modular preforming tension bracket suitable for pultrusion process, which comprises a first threading frame and a second threading frame which are arranged at an interval, a plurality of mounting holes are arranged on the first threading frame and the second threading frame, a detachable first unit panel is arranged in the mounting hole on the first threading frame, and a detachable second unit panel is arranged in the mounting hole on the second threading frame. A detachable second unit panel is arranged in the mounting hole in the second yarn penetrating part, a yarn penetrating hole and a felt penetrating channel are formed in the first unit panel, and a yarn penetrating hole is formed in the second unit panel. The tension control device is simple in structure and convenient to operate, can flexibly adjust and arrange the positions of yarns and felts according to different products, can independently control tension on each surface, has the characteristics of high universality, flexible layout, accurate positioning, independent tension control and the like, and effectively solves the problem that the straightness and profile tolerance of the products are difficult to control during production of pultrusion composite materials at present.

The invention relates to the technical field of transmission shaft machining, in particular to a kinetic energy transmission shaft body and a machining process integrating pultrusion, weaving, winding and glue injection, the kinetic energy transmission shaft body comprises a shaft body, the shaft body is formed by winding a continuous composite material reinforced thermosetting resin prepreg tape, and a composite material comprises a reinforcing material, a base material, a functional additive and filler; a plurality of limiting grooves are formed in the inner wall of the shaft body, the limiting grooves extend in the axial direction of the shaft body, the length of the limiting grooves is consistent with that of the shaft body, and pultrusion, weaving, winding and glue injection processes are organically integrated, so that the manufactured kinetic energy transmission shaft body has high specific strength, high torsional rigidity, excellent interlayer bonding performance and good dynamic stability; meanwhile, a limiting groove can be precisely machined in the inner wall of the shaft body, the high-precision torque transmission requirement is met, and the defects that a traditional metal shaft body is heavy and prone to corrosion and layers of a single composite material shaft body are prone to layering are overcome.