467 results about "Pultrusion" patented technology

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 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 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 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.

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 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 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.

A laying structure of and a laying implementation method for a thick-walled multi-cavity pultruded beam in the shape of a Chinese character "目" for a vehicle body, relating to the technical field of rail transit. The laying structure comprises a first cavity region (1), a second cavity region (2), a third cavity region (3), and an outer skin region (4) that are all formed by laying multi-axial fabrics. The second cavity region (2) is located between the first cavity region (1) and the third cavity region (3), and the first, second and third cavity regions are collectively wrapped by the outer skin region (4) to form a rectangular structure in the shape of the Chinese character "目". In the laying structure of a thick-walled multi-cavity pultruded beam in the shape of the Chinese character "目" for a vehicle body, quasi-isotropic mechanical properties of the thick-walled multi-cavity pultruded beam in the shape of the Chinese character "目" for a vehicle body are achieved by laying multi-axial fabrics; moreover, the laying structure is adapted to a pultrusion process, and optimizes the structural design, improving the overall rigidity and strength.

The invention relates to a method for producing a fiber-reinforced, polymeric continuous profiled element (1), wherein the continuous profiled element (1), having preferably at least one hollow chamber (2, 2′), comprises a core profile (10) which can be produced by means of a pultrusion process, and wherein during the pultrusion process at least one continuous strand having reinforcement fibers (5) is integrated into the polymer matrix (4) of the core profile (10). According to the invention, the curing of the core profile (10) is carried out by means of a dual-cure method.

The utility model discloses an anti-damage device for removing demolding cloth on the surface of a pultrusion plate, which comprises a rack arranged at an outlet of an unreeling machine, three groups of guide roller groups are arranged on the rack, the pultrusion plate slides on the three groups of guide roller groups, and reeling wheels are arranged on the rack at the upper side and the lower side of the outlet of the unreeling machine. An auxiliary tool and a mold removing tool are further installed on the machine frame, the auxiliary tool is arranged close to an outlet of the unwinding machine, and the mold removing tool is arranged on the side away from the outlet of the unwinding machine. According to the utility model, the auxiliary tool and the mold removing tool are arranged, so that a pultrusion plate does not jump up and down when moving at a high speed, the pultrusion plate runs at a good speed, and the surface of the pultrusion plate is not damaged when the demolding cloth is torn off, so that the loss of the plate is effectively prevented.

The invention provides a high-temperature-resistant optical fiber intelligent rib and a manufacturing method of an intelligent rib and a steel strand thereof, and the manufacturing method of the high-temperature-resistant optical fiber intelligent rib comprises the following steps: 1, forming a high-molecular polymer loose tube outside an optical fiber, and placing the loose tube in a pre-forming mold; the method comprises the following steps of 1, preparing a high-molecular polymer loose tube, 2, paving the carbon fibers mixed with a small amount of S-shaped glass fibers outside the high-molecular polymer loose tube, and finally, placing basalt fibers on the outermost layer, and 3, forming an optical fiber composite fiber rib by utilizing a pultrusion process, and placing the basalt fibers on the outermost layer to form the fiber composite fiber rib. The intelligent steel strand can be directly stranded together with a steel wire and subjected to high-temperature stabilization treatment.

The invention relates to continuous and efficient plant fiber yarn processing equipment and an automatic control method. The method comprises the following steps: setting parameters; constant tension establishment: the PLC realizes constant tension conveying based on tension feedback and speed feedforward; pre-infiltration is carried out; performing total immersion modification: running the yarns in a modification tank along a Z-shaped path, and starting ultrasonic oscillation at the same time; performing infrared preheating; washing and liquid squeezing: guiding the yarns into a washing unit to remove residual modified liquid, and then performing secondary liquid squeezing by a liquid squeezing unit to stabilize the moisture content; partitioned drying: performing roller surface contact heating and forced air drying; the tension and the temperature are monitored on line, and when the tension or the temperature exceeds the limit, a PLC conducts automatic linkage correction; cooling and rolling; and linkage control: performing master-slave or synchronous control with downstream pultrusion equipment according to the speed / tension signal. Compared with the prior art, the device has the advantages of realizing efficient and continuous automatic production, improving the efficiency, improving the modification uniformity and penetration depth, improving the product performance and the like.

A fixing device of a pultrusion die comprises two fixing bases which are defined as the first fixing base and the second fixing base. The fixing seat comprises a base, a fixing groove used for containing a mold is formed in the base, and an opening of the fixing groove faces upwards. The top of the base is connected with a fixing plate, and the bottom face of the fixing plate abuts against the mold. According to the fixing device of the pultrusion die, through the fixing groove with the upward opening, the die can be directly placed in the fixing groove from top to bottom, operation is easy, and use is convenient; and a fixing plate is matched with a fixing groove, so that the mold is laterally fixed, and a good fixing effect on the mold is ensured.

The invention discloses a composite material pultrusion frame data acquisition and management system based on reinforcement learning. The system comprises a real-time process parameter acquisition and filtering unit, a digital twinborn simulation unit, a reinforcement learning control unit, a hyper-parameter optimization unit, an abnormity early warning unit and a data management unit. The system obtains a process parameter data stream through a sensor array and nonlinear Kalman filtering, generates a control strategy through a digital twin model and a SoftActor-Critic algorithm, optimizes hyper-parameters through an artificial bee colony algorithm, identifies and early warns process abnormal parameters in real time, and constructs a data feature library and auxiliary decision data. According to the invention, the data acquisition precision of the pultrusion process, the intelligent level of the production process and the product quality stability are improved.

The invention discloses a glass fiber pultrusion material density non-contact detection method, electronic equipment and a medium, and the glass fiber pultrusion material density non-contact detection method comprises the following steps: establishing a glass fiber pultrusion material density detection model based on a near infrared spectrum; and obtaining the original near-infrared diffuse reflection spectrum of the glass fiber pultrusion material to be detected and obtaining the density value of the glass fiber pultrusion material to be detected. By adopting the non-contact detection method for the density of the glass fiber pultrusion material, the electronic equipment and the medium, the non-destructive off-line detection of the glass fiber pultrusion material can be realized, the non-contact detection method is particularly suitable for the on-line detection of the glass fiber pultrusion material, and the non-contact detection of the density of the glass fiber pultrusion material can be realized by directly carrying out rapid and efficient non-destructive detection on a product at a production line outlet. A density detection result can be reflected to a production end in real time, so that real-time online optimization and adjustment of production process parameters are realized, and the production stability and the quality stability of the glass fiber pultrusion material are improved.

The invention relates to a method for manufacturing a reinforcement structure for a wind turbine blade (10), the method comprising the steps of: 1) arranging a plurality of strips (63) of fibrous reinforcement material into adjacent stacks (65a, b, c) of strips forming a layered structure (61) having a plurality of fibrous reinforcement layers (67) wherein adjacent ones of the plurality of fibrous reinforcement layers are separated by an intermediate layer (66), according to the invention, at least one separator comb (70) is provided for the resin (1, 2), the at least one separator comb comprising: a base region (71) and a tooth region (73) comprising a plurality of teeth (74) extending from the base region (71), where the plurality of teeth (74) are arranged with a linear array of gaps (79) between adjacent teeth (74), the gaps (79) being configured for allowing the resin to flow from one side of the separator comb (70) to the other side of the separator comb (70), and wherein the plurality of teeth (74) are configured for penetrating the intermediate layer (66), 3) inserting the at least one separating comb (70) between two adjacent stacks (65a, b, c) of strips and penetrating the plurality of intermediate layers (66) with the plurality of teeth (74) such that a plurality of strips (63) of the adjacent stacks (65a, b, c) of strips are separated by the at least one separating comb (70), 4) after inserting the at least one separating comb (70) between the adjacent stacks (65a, b, c) of strips, the method includes (1) optionally moving the layered structure (61) into a desired position, such as into a wind turbine blade shell mold, (5) optionally removing the at least one divider comb (70), and (6) infusing the layered structure with a resin to form a reinforcing structure (78).

Technical Description of Basalt Fibers as Reinforcement Basalt fibers can be processed into reinforcement in concrete in a wide variety of forms. The starting point for all reinforcement products considered here is continuous basalt fibers. Short-fiber concretes, which are subject to separate considerations, are therefore not included in this compilation. Following production, the filaments are generally bundled into rovings and processed either by pultrusion into one-dimensional rods, profiles, or lamellae, or by textile manufacturing processes such as embroidery or knitting into two- or multi-dimensional textiles [1]. Reinforcement products manufactured by pultrusion are always a two-component system consisting of the fibers and an impregnation of a (polymeric) matrix. These are called fiber-reinforced plastics (FRP).Textiles can, in principle, be manufactured without impregnation, as the sewing thread provides a certain degree of stabilization. However, this comes at the cost of reduced strength and stiffness, since only the outer filaments are in direct contact with the concrete, while the inner filaments are activated solely through friction. Furthermore, impregnation protects the filaments from the alkaline environment of the concrete. Therefore, according to current technological standards, textiles are also impregnated. The chemical composition of the fibers and the matrix, as well as the fiber volume ratio, significantly determine the properties of the reinforcement product.

The invention provides pultrusion equipment for preparing a UD block, a method for preparing the UD block, the UD block, a wind power blade and a wind generating set. The pultrusion equipment comprises: a gum dipping tank; a plurality of yarn holes penetrating through the pre-forming plate are formed in the pre-forming plate, and the yarn holes are distributed in the pre-forming plate in an equal-proportion amplification mode according to the section shape of the UD block; the material extruding die comprises a cavity, and the sectional area of an inlet of the cavity is larger than that of an outlet of the cavity; glass fibers are impregnated in the impregnation tank, then sequentially pass through the yarn holes of the pre-forming plate and the cavity of the extrusion mold, and finally are subjected to curing forming through the curing forming mold, so that the UD block is formed. According to the invention, the gas and redundant resin mixture wrapped in the impregnated glass fiber can be extruded to improve the performance of the UD block.

The utility model discloses a heating plate thermal insulation device for pultrusion, which comprises a heating plate, a pultrusion mold matched with the heating plate is fixedly connected onto the inner wall of the heating plate, heat conduction pipes are mounted on the outer walls of two ends of the heating plate, and a thermal insulation device matched with the heating plate is fixedly connected onto the outer wall of the heating plate. The heating plate heat preservation device for pultrusion is characterized in that the heat preservation device is of a multi-layer composite structure, the multi-layer composite structure comprises a heat preservation plate outer layer, a heat preservation plate middle layer and a heat preservation plate inner layer, and a heating plate plug port is formed in the outer wall of one end of the heating plate. The heat preservation layer is completely attached to the outer wall of the heating plate, the problems of heat preservation dead corners, serious heat loss and the like of the heating plate are solved, the heat preservation layer is of a multi-layer composite structure, heat conduction, convection and radiation loss are effectively prevented, the energy utilization rate is increased, and the pultrusion quality is guaranteed.

The invention discloses a preparation and test method of a pultrusion plate splicing seam tensile spline for a wind power blade. The preparation tool comprises an electric heating platform, a spline pouring forming area and a vacuum exhaust hood. The sample strip pouring forming area is arranged in an area covered by the vacuum exhaust hood on the electric heating platform, and is formed by splicing pultrusion plates between the two pultrusion plates in a surrounding manner; a cushion block for preventing the two pultrusion plates from moving oppositely is arranged at each of the two ends of the pultrusion plate abutted seam, so that the pultrusion plate abutted seam can always meet the size requirement of a target abutted seam sample strip. Therefore, the technical problem that the gap of the splicing seam between existing pultrusion plates is not accurate can be solved.

This invention relates to the field of centralized feeding equipment technology, and discloses a centralized feeding device for pultrusion line glue injection, including a feeding hopper. A suction pipe is fixedly connected to the top of the feeding hopper, and a one-way valve is installed on the outer wall of the suction pipe. A connecting cylinder is fixedly connected to the top of the suction pipe, and an exhaust pipe is fixedly connected to the bottom of the connecting cylinder. A two-way valve is installed on the outer wall of the exhaust pipe. A piston rod is slidably connected to the top of the connecting cylinder, and a piston plate is fixedly connected to the bottom of the piston rod. A connecting plate is fixedly connected to the top of the piston rod, and the bottom of the actuating rod is fixedly connected to the output end of a cylinder. By extending and retracting the cylinder, the connecting plate drives the piston rod to slide within the connecting cylinder. The piston plate moves accordingly, and the piston rod drives the piston plate to move upwards. Gas in the feeding hopper enters the connecting cylinder. When moving downwards, the gas is discharged through the exhaust pipe, achieving auxiliary air bubble discharge from the feeding hopper and effectively reducing air bubbles generated during mixing in the feeding hopper.

The invention discloses a high-speed pultrusion optical cable reinforcing core and a production process thereof, and the core comprises an outer sheath, the outer surface of the outer sheath is provided with a directional diameter, the interior of the outer sheath is fixedly connected with an aluminum-plastic composite layer, the outer surface of the aluminum-plastic composite layer is provided with a ring groove, the interior of the aluminum-plastic composite layer is provided with a vertical groove, and the vertical groove is provided with an annular groove. A wrapping layer and a cable core filling layer are fixedly connected in the aluminum-plastic composite layer, an embedding groove is formed in the cable core filling layer, a center reinforcing rib is fixedly connected in the embedding groove, the center reinforcing rib is provided with three sets of supporting plates, and deformation grooves are formed in the outer surfaces of the three sets of supporting plates. According to the utility model, through the arrangement of the central reinforcing rib and the deformation grooves formed in the supporting plates connected with the central reinforcing rib, the optical cable has the bending characteristic while the passing strength of the optical cable is improved.