76 results about "Forming pressure" patented technology

The invention discloses a moisture-proof corrugated paper generation method and system based on machine vision. Humidity distribution data are obtained through image acquisition equipment, uniformity deviation characteristics are extracted through an image processing algorithm and input into an intelligent analysis model, and if deviation exceeds a threshold value, a coating thickness adjusting signal is output to determine the spraying amount of a moisture-proof agent; then, on the basis of the spraying amount, a structural integrity image in the forming stage is collected, deformation parameters are extracted, a production parameter optimization instruction is generated through a feedback verification unit in combination with the effect mapping relation model, an execution mechanism is driven to adjust the pre-drying temperature and the forming pressure, and meanwhile finished product moisture resistance detection data are obtained; finally, a closed-loop regulation and control cycle is formed through detection data and deviation characteristics, model parameters are optimized, deviation changes are continuously monitored, the mapping model is dynamically adjusted to adapt to different paper types, intelligent real-time optimization is achieved, and the production efficiency and the moisture-proof performance stability are improved.

The present application relates to a kind of preparation methods of peelable polyimide laminated film, which is made of multiple polyimide composite films by hot pressing forming, wherein the polyimide composite film is composed of polyimide film and adhesive, by controlling the thickness of adhesive layer, forming temperature, forming pressure and holding time, the peel strength of laminated film is controlled, and the peel strength controllable polyimide laminated film is obtained.Compared with the prior art, the present application effectively controls the peel strength of laminated film, and obtains a peelable polyimide laminated film with controllable peel strength.The method can control the peel strength of laminated film according to the use requirement, is easy to process and use, has low requirement for equipment, is easy to implement, and can be used for preparing peelable gasket.

This utility model discloses a novel surface co-extrusion device for heating pipes with an oxygen barrier layer, relating to the field of heating pipe manufacturing technology. The utility model includes a conveying chamber, a cooling jacket, and a discharging sleeve. A forming sleeve is fixed to one end of the conveying chamber, a cooling jacket is fixed to the end of the forming sleeve away from the conveying chamber, a heat insulation plate is fixed to the end of the cooling jacket away from the forming sleeve, and a discharging sleeve is fixed to the end of the heat insulation plate away from the cooling jacket. A homogenizing plate is fixed in the middle of the conveying chamber, and a central shaft is fixed through the center of the homogenizing plate along its central axis. The central shaft is fixed inside the conveying chamber. Homogenizing holes are uniformly opened throughout the homogenizing plate. An inner filter sleeve is fixed inside the discharging sleeve. This utility model, by setting up the conveying chamber, cooling jacket, and discharging sleeve, solves the problem that during the surface co-extrusion of heating pipes with an oxygen barrier layer, the high surface temperature of the pipe base material and the high fluidity after bonding with the oxygen barrier layer cause uneven thickness of the oxygen barrier layer, and the insufficient uniform forming pressure of the heating pipe.

The utility model belongs to the technical field of concrete detection, and particularly relates to a high-strength concrete test piece pressure forming device which comprises a base and a rotating supporting piece arranged on the base, an extrusion forming piece is arranged on the rotating supporting piece, hydraulic push rods are arranged on the extrusion forming piece in an up-down corresponding mode, a fixing plate is arranged on the base, and the fixing plate is arranged on the base. The hydraulic push rod is arranged on the fixing plate, a torsional spring automatic rebounding mechanism is arranged on the side face of the base, an inner clamping plate is arranged on the rotating supporting piece, the inner clamping plate is arranged on a rebounding rod, and the rebounding rod is arranged on the torsional spring automatic rebounding mechanism. By rotating the supporting piece and the extrusion forming piece, the device can have a rotating switching function, so that pressure forming operation can be conveniently carried out on concrete of different specifications, and when the pressure forming piece is rotated and switched to cope with concrete pieces of different specifications, the efficiency is improved, and the labor intensity of workers is reduced. And the preparation requirements of diversified test pieces in laboratories or industrial production can also be met.

The invention discloses a high-flux composite material preparation mold. The high-flux composite material preparation mold comprises a bottom mold and a plurality of forming modules mounted on the bottom mold, each single forming module comprises a resin mold, a pressurizing module and a heating module; the heating module is installed on the bottom die, the resin die is arranged above the heating module, a forming area is arranged in the resin die, a prepreg of a composite material is arranged in the forming area, the pressurizing module is arranged above the forming area of the resin die, the pressurizing module is used for applying pressure to the prepreg, and the heating module is used for heating the prepreg; the pressurizing modules in the forming modules are mutually independent, and the heating modules in the forming modules are mutually independent. The invention further discloses a preparation method based on the mold. Different forming pressures and forming temperature-time curves can be provided for a plurality of sample pieces, the plurality of composite material sample pieces are formed at the same time, a large number of composite material samples are synthesized in a parallelization mode, and the high-throughput preparation function of small-sample-size composite materials is achieved.

The present invention provides a pressure molding device comprising a dimension measurement portion that is easy to apply in a die and capable of reliably measuring dimensions. One embodiment provides a pressure molding device comprising an upper die and a lower die arranged in a first direction, wherein the upper die comprises a first cam portion which allows, as one of the upper die and the lower die moves in the first direction, part of the lower die to move in a second direction that is different from the first direction, and a material fixing portion which fixes a material along with a material support portion according to the movement in the first direction, and the lower die comprises a second cam portion corresponding to the first cam portion, the material support portion supporting the material, and a molding portion which is moved along with the second cam portion and molds the material. In addition, the pressure molding device further comprises a dimension measurement portion which is located at the lower portion of the molding portion and is movable in the second direction.

The invention belongs to the technical field of foamed polypropylene, and provides foamed polypropylene with high compressive strength and rebound resilience and a molded part thereof. The foamed polypropylene beads are prepared from composite particles with a core layer and a skin layer through carbon dioxide primary foaming and hot air secondary foaming, the core layer comprises high-melt-strength polypropylene, aluminum borate whiskers treated by a coupling agent, a hydrogenated styrene-ethylene-butylene-styrene block copolymer, polypropylene grafted glycidyl methacrylate, a cell nucleating agent and a lubricant, and the skin layer comprises low-melting-point polypropylene and a lubricant. When the low density is 18-20 g / L, the 25% compression strength of a molded part is not lower than 125 kPa, the 25% compression strength of the molded part is not lower than 350 kPa when the density is 40-44 g / L, the 25% compression strength of the molded part is not lower than 800 kPa when the density is 80-85 g / L, the 25% compression permanent deformation of the molded part is not higher than 10%, and the molded part has low molding pressure and excellent appearance; the method is suitable for the application fields of automobile bumper core materials, high-end protective packaging, new energy battery turnover trays and the like.

The utility model discloses a friction-free turning and bending structure for automobile thick-material products, which belongs to the technical field of stamping dies and comprises a lower die holder and a punch, the lower die holder is provided with a pressing portion, a turning and bending mechanism is arranged on the side of the pressing portion and comprises a turning base, a forming punch, a lever component and a pressing block, and the forming punch is arranged on the turning base. The overturning base is fixed to a lower die base, the forming punch is installed on the overturning base in the mode of overturning around a horizontal transverse shaft, the forming punch is provided with a forming pressing face, the lever component is installed on the overturning base in the mode of overturning around the horizontal transverse shaft, the pressing block is in linkage with the punch, and the pressing block downwards abuts against the lever component and pokes the forming punch through the lever component. The forming punch is connected with a spring, and the spring applies elastic force to the forming punch to enable the forming pressing face to be away from the pressing part. According to the bending structure, the appearance quality, the bending stability and the size precision of a hinge product are improved, the service life of a die is prolonged, and loss and cost in the production process are reduced.

The invention relates to the field of container corrugated plate machining, in particular to container corrugated plate pressure forming equipment and a using method thereof.The container corrugated plate pressure forming equipment comprises a forming machine support, a cleaning mechanism, a hydraulic forming mold, a hydraulic pressure forming mold, a hydraulic pressure forming mold, a hydraulic pressure forming mold pressing mechanism and a hydraulic pressure forming mold pressing mechanism, the cleaning mechanism is movably installed between the two sides of the inner wall of the cleaning groove and used for cleaning foreign matter on the surface of the plate, and the flow dividing mechanism is movably installed in the middle of the forming machine support, matched with the cleaning mechanism in a transmission mode and used for removing unqualified plates. According to the pressure forming equipment for the corrugated plate of the container, the wedge-shaped scraping plate, the L-shaped guide groove, the guide rod and other components are used in cooperation, when abnormal protrusions exist on the surface of a plate, the linear conveying motion of the plate can be converted into the transverse separation motion of the wedge-shaped scraping plate, and therefore unqualified plates can be effectively detected; and resource waste caused by pressure forming of unqualified plates is avoided.

The utility model discloses a high-toughness copper-clad plate forming device which comprises a box body, a support is welded to the top end of the box body, and a first motor is fixedly installed in the middle of the top end of the support. By means of combination of a first motor, a first threaded rod and a first threaded sleeve, the distance between a hydraulic mechanism and a copper-clad plate material can be accurately regulated and controlled, accurate setting of a forming pressure operation position is achieved, pressure can be evenly applied to copper-clad plates of different specifications, the size precision and flatness of formed products are remarkably improved, defects caused by uneven pressure are reduced, and the production efficiency is improved. The product quality and the qualification rate are improved; by means of cooperation of the movable plate, the sliding mechanism, the pull rope, the first spring and other components, it is ensured that the device is stable in structure and controllable in action when the first threaded sleeve moves, the pull rope and the first spring can buffer and assist in supporting and absorbing impact force when hydraulic pressure is applied, the copper-clad plate is prevented from being damaged, the service life of mechanical components is prolonged, the maintenance cost is reduced, and production safety and reliability are enhanced.

The invention provides a high-density functional ball for repeatedly opening and closing a leaking stoppage circulation tool and a preparation method of the high-density functional ball, and relates to the technical field of drilling tools. The high-density functional ball for repeatedly opening and closing the leaking stoppage circulating tool comprises the following raw materials in percentage by weight: 70-85% of polyether-ether-ketone, 10-20% of copper powder and 5-10% of silicon nitride. The preparation method comprises the following steps that polyether-ether-ketone, copper powder and silicon nitride are fully mixed and dried, and a mixture is obtained; melting the mixture at a high temperature, then injecting into a ball mold for pressure forming, and air-cooling to normal temperature to obtain a formed ball; and the formed ball body is subjected to graded tempering treatment, ball body surface finish machining treatment is conducted after cooling, and the functional ball has the advantages of being large in density, stable in shear pressure and good in mechanical property. The preparation process can improve the problems of high thermal expansion coefficient, stress concentration and the like of the polyether-ether-ketone raw material.

The invention belongs to the technical field of metal plastic processing, and provides a stamping die surface micro-texture processing method and design system.The stamping die surface micro-texture processing method comprises the steps that a dynamic working condition matrix in a historical production time period is collected and constructed, and multi-physics field coupling simulation of finite element and fluid dynamics analysis is utilized; designing optimal initial microstructure parameters of the to-be-machined stamping die to perform microstructure machining, monitoring and collecting temperature deviation and pressure deviation in real time in the machining process, judging whether thermal deformation out-of-tolerance or forming pressure abnormity occurs or not, if yes, triggering correction compensation, collecting compensation information in a historical production time period, and if not, executing the step 3; calculating a correction compensation parameter by combining the temperature deviation and the pressure deviation, performing correction compensation on the micro-texture, performing gradient layer deposition on the surface of the micro-texture after correction compensation is completed, constructing and training a micro-texture efficiency attenuation model, predicting a friction coefficient value in an attenuation deduction time period and judging whether reprocessing is triggered or not, and if yes, executing the step 2; and if not, reprocessing is carried out.

The invention discloses a preparation method of large-size high-strength Y2O3-MgO nano-composite ceramic, and relates to the field of transparent ceramic materials, the preparation method comprises the following steps: loading Y2O3-MgO nano-composite powder with the particle size of 10-60 nm into a cold isostatic pressing mold, then loading into a sealing bag, and vacuumizing; the sealed sample piece is put into a cold isostatic press for cold isostatic pressing forming, the forming pressure is 140-200 MPa, and a low-defect-density green body is obtained; and carrying out vacuum and hot isostatic pressing sintering on the formed Y2O3-MgO nano complex-phase green body. According to the preparation method, the problems that the large-size Y2O3-MgO nano-composite ceramic is low in yield, relatively large in grain size, relatively poor in mechanical property and the like can be solved through a stepped cold isostatic pressing molding technology and a vacuum + hot continuous sintering technology, and the preparation method is a preparation scheme of the Y2O3-MgO nano-composite ceramic with practical application value.

This utility model relates to a paper box edge rolling machine, and particularly to a rotary feeding paper box edge rolling machine, which includes a pre-forming station, a feeding station, and a final forming station. The feeding station and the final forming station are connected by a turntable. The forming lower mold is set on the turntable and distributed circumferentially along the turntable. The final forming station is equipped with a final forming upper mold. The pre-forming station is equipped with a pre-forming upper mold and a pre-forming bottom mold. A material transfer assembly is connected between the pre-forming station and the feeding station. The material transfer assembly includes a material transfer seat and a material transfer nozzle. The material transfer nozzle is distributed circumferentially along the material transfer seat and there are at least two sets. The material transfer seat is rotatably set, and the material transfer nozzle is raised and lowered. The independent pre-forming station increases the paper box forming pressure. When one set of material transfer nozzles picks up material at the pre-forming station, the other set of material transfer nozzles releases material at the feeding station. The feeding speed is fast, and a corner folding block can also be set at the pre-forming bottom mold.

The invention provides a glass processing method, hot bending glass and a protective film. The glass processing method comprises the following steps: (1) cutting the glass, and then carrying out CNC (Computer Numerical Control) corner polishing; (2) carrying out first sweeping treatment on the front surface of the glass to enable the side edge of the front surface of the glass to be arc-shaped; (3) cleaning for the first time; (4) the glass is put into a hot bending mold to be subjected to hot bending treatment, so that the reverse side of the glass is sunken inwards, the forming temperature of the hot bending treatment is 650-850 DEG C, and the forming pressure is 4-6 Mpa; (5) carrying out secondary polishing treatment after hot bending treatment, and respectively polishing the front surface and the back surface of the glass; (6) cleaning for the second time after sweeping for the second time; (7) carrying out acid bath after cleaning for the second time; and (8) carrying out toughening treatment after the acid bath. The hot bending glass and the protective film obtained by the method provided by the invention have more comfortable side hand feeling.

To provide a horizontal multistage pressure molding machine capable of easily inspecting cut blanks without any hassle. [Solution] A horizontal multi-stage pressure molding machine equipped with a plurality of rolling stations arranged side by side on a machine base, each consisting of a die 5 and a punch, cutting means 10 provided on one side of the machine base 2 for cutting a bar-shaped material X into workpieces of a predetermined length, and transfer means 12 for sequentially transferring the workpieces to the plurality of rolling stations, and equipped with a receiving and holding mechanism 18 for receiving and holding cut blanks cut by the cutting means 10 and discharged from the workpieces.

The utility model belongs to the technical field of seal head manufacturing, and particularly relates to special hydraulic equipment for manufacturing a large-diameter seal head with the diameter larger than 10 m. The special hydraulic equipment comprises a base and a hydraulic shell, the top of the base is connected with the hydraulic shell through a supporting rod, and a forming assembly is fixed to the top of the base; a forming cavity is formed in the top of a forming die of the forming assembly, sliding cavities are evenly formed in the top of the forming cavity in a surrounding mode, reset sliding blocks are installed in the sliding cavities in a sliding mode, sliding rods are connected to the rear ends of the reset sliding blocks, and springs are embedded in the sliding rods. The plate-shaped part is placed on the forming die, the forming pressure head is driven by the hydraulic cylinder to perform one-time downward pressing, and then the plate-shaped part is pressed by the plurality of resetting modules, so that the plate-shaped part forms a one-time recess during one-time downward pressing, and the condition that the plate-shaped part is cracked due to overlarge one-time hydraulic forming deformation is avoided; and meanwhile, the temperature of the plate can be increased through one-time hydraulic deformation, and the hardness and strength can be reduced to a certain degree.

The present application relates to the technical field of composite material processing forming, and discloses a method for improving the bonding strength of fiber reinforced polypropylene composite material and aluminum alloy, which comprises the following steps: processing aluminum alloy plate into a metal base plate, and blending and granulating a polypropylene base and glass fibers to obtain composite granules; outputting a laser beam on the surface of the metal base plate, and repeatedly scanning multiple parallel micro-line segments to process micro-grid grooves; positioning the metal base plate in a mold cavity, laying the composite granules in the groove area, heating and warming the closed mold to make the granules into a composite melt, and applying a forming pressure to make the melt enter the inside of the groove; cooling the mold in the closed state to make the melt crystallize and solidify under the limitation of the groove sidewall, opening the mold to take out the composite component and placing it. The present application improves the melt filling by controlling the groove morphology through multi-pass micro-line segment scanning, limits the deformation by cooling the closed mold, and releases the residual thermal stress by standing, thereby improving the interfacial bonding strength of the composite component.

The utility model discloses a ceramic fiber tube forming die which comprises two groups of die bodies, a first connecting block and a second connecting block are respectively fixed on two sides of the die bodies. Compared with the prior art, due to the split type mold body structural design, the risk of structural damage during demolding of the ceramic fiber pipe is remarkably reduced, the first connecting block and the second connecting block arranged on the two sides of the mold body are accurately engaged through a step structure and anti-skid lines and are matched with the first bolt for locking, and the sealing performance and stability of the forming cavity are ensured; the mold core is of a gradually-changed taper structure, the maximum-diameter end is fixed to the connecting flange, contact resistance between a fiber pipe and the mold core during demolding is effectively reduced, the pressure relief opening releases redundant gas in the initial forming stage to avoid the bubble defect, the supporting spring pushes the sealing plate to close the air hole to maintain forming pressure in the later stage, and the rejection rate is greatly reduced; and meanwhile, the split type die body design simplifies the die maintenance process, and the production cost is reduced.

The invention discloses a special-shaped plate pressure forming method based on gradient heating and mold constraint, and relates to the technical field of special-shaped plate forming, and the special-shaped plate pressure forming method comprises the steps of plate blanking, plate partition heating, plate feeding and positioning, mold closing, pressure maintaining forming, demolding and the like. Through the synergistic effect of gradient partition heating and multi-stage curvature mold constraint, efficient production and high-precision forming of the special-shaped plate are achieved.

The application belongs to the field of optics and nanomaterial self-assembly, and provides a material with structural color and a preparation method and application thereof. A polymer nanoring is used as an assembly unit, an easily volatile organic solvent is used as a dispersion medium, and a water vapor interface is used as an assembly interface. A self-assembly process induced by an interface surface tension gradient is used to make the nanoring array directionally arrange on the water surface. The nanoring has an outer diameter of 500-1000 nm and a thickness of 100-400 nm. Subsequently, LB film analyzer technology is used to controllably transfer the closely arranged nanoring array to a transparent substrate under suitable film forming pressure, film forming speed, film pulling speed and film pulling pressure to obtain a material with structural color. The structural color material prepared by the application has obvious structural color and angle correlation, and the structural color can be regulated by the size of the assembly unit, and is suitable for use in the fields of display, anti-counterfeiting, encryption and the like.

The invention relates to the technical field of molds, and discloses a multi-point forming mold, the upper end of the multi-point forming mold is provided with a forming pressure head assembly, the forming pressure head assembly comprises a support, the outer wall of the support is circular or the support is cylindrical, the upper end of the support is provided with a first spherical groove, and a large spherical head capable of swinging is arranged in the first spherical groove; a large jacking surface is arranged on the upper end face of the large ball head, a plurality of small ball heads capable of swinging are arranged on the large jacking surface, the small ball heads and the large jacking surface swing to make contact with the pressing surface in the curved surface pressing process of the small ball heads, and the large jacking surface is round; the large ball head of the multi-point forming die can swing in the first spherical groove, first-time shape adaptation can be carried out in the curved surface pressing process, meanwhile, after the small ball head makes direct contact with a pressing face, the small ball head further swings to adjust the position, and therefore the height difference between adjacent pressing points is reduced, the whole pressing curvature is smoother, the pressed curved surface is smoother, and the pressing efficiency is improved. The three-dimensional curved surface is higher in precision, and wrinkles on the surface of the product are prevented.

The application discloses a low magnetic loss magnetic core manufacturing process, and belongs to the technical field of magnetic material production processes. The application discloses the influence of three Fe-Si-Al powder particle sizes, namely D50=90 mu m, D50=35 mu m and D50=5 mu m, and the amount of an insulating agent, namely phosphoric acid, on the high-frequency soft magnetic performance of a magnetic powder core, and obtains the optimal powder particle size selection under the conditions of medium and high frequencies and high power. Then, the application discloses the influence of the amount of alumina raw material and the forming pressure on the high-frequency soft magnetic performance of the magnetic powder core. By comparing the magnetic properties of the magnetic powder cores coated by two kinds of inorganic coating agents, namely alumina and phosphoric acid, an improvement scheme for the alumina coating layer is proposed. The Fe-Si-Al magnetic powder core obtained by the process has the lowest magnetic loss. Therefore, the application solves the technical problem of how to reduce the magnetic loss of the magnetic core.

This method for manufacturing a sintered member comprises: a step for pressure-molding a raw material powder packed in a cavity of a mold to produce a cylindrical powder compact; and a step for sintering the powder compact. This mold comprises: a die having a hollow part penetrating in a first direction; a core rod inserted into the hollow part along the first direction; a lower punch inserted between the die and the core rod; a first upper punch inserted into the hollow part so as to be in contact with the upper end surface of the core rod; and a second upper punch inserted between the die and the first upper punch. The side surface of the first upper punch has a plurality of tapered surfaces, the outer dimensions of which decrease toward the lower end surface, and one or more orthogonal surfaces orthogonal to the first direction. In the step of producing a powder compact, the raw material powder is pressure-molded by the upper end surface of the lower punch, the side surface including the plurality of tapered surfaces and one or more orthogonal surfaces of the first upper punch, and the lower end surface of the second upper punch.

The application provides a rheological pressing forming method of a powder metallurgy structure: a powder containing ceramic and metal is mixed with a thermoplastic adhesive to obtain a semi-solid hot material, the semi-solid hot material is crushed to obtain feed particles, the feed particles are preheated to 60-80 DEG C, meanwhile, a mold is preheated to 60-100 DEG C, then the feed particles are filled into the mold, the mold is pressurized to 30-60 MPa, and the temperature is raised to 5-50 DEG C higher than the softening point temperature of the organic binder, the mold is kept at the temperature and pressure for 15-60 min, the mold heating is stopped, the mold is cooled, the blank is solidified, and then the blank is demolded to obtain a precision blank. The application realizes near-net-shape forming of high-performance precision complex parts under low forming pressure, provides good flowability of the slurry of the feed under constant temperature conditions, has good adaptability to materials, the prepared precision structure can be widely applied to the fields of mechanism manufacturing, biological medicine, energy and environment in the powder metallurgy field, and has good application prospect.

The utility model discloses environment-friendly forming equipment for regenerated magnesia carbon bricks, and belongs to the technical field of refractory material forming equipment. Comprising a bearing table, a pressure forming mechanism fixedly connected to the upper end of the bearing table, a first moving mechanism arranged at the upper end of the bearing table, a forming box placed at the upper end of the bearing table, a heating mechanism arranged at the upper end of the bearing table and used for heating the forming box, a support fixedly connected to the upper end of the bearing table and an upper frame fixedly connected to the upper portion of the side wall of the support. The lower frame body is fixedly connected to the lower portion of the side wall of the support, the magnetic attraction frame is arranged between the upper frame body and the lower frame body in a sliding mode, the discharging mechanism is fixedly connected to the lower end of the lower frame body, the material stirring mechanism is arranged on the discharging mechanism, and the limiting mechanism is arranged on the support and used for limiting the magnetic attraction frame. The first moving mechanism is used for moving the forming box. The iron removal device has the advantages of dispersed forming procedures, low iron removal efficiency, non-uniform material distribution, poor blank preheating effect and insufficient automation degree.

The utility model discloses a refractory material efficient forming pressure control device, specifically related to material processing and forming technical field, including powder forming press, the powder forming press outside is equipped with recovery mechanism, the recovery mechanism includes the arc slide that fixed in the powder forming press outside, arc slide top fixedly equipped with arc electric slide rail, arc electric slide rail top is equipped with the sliding table, the sliding table top fixedly equipped with L shape board, L shape board one side fixedly equipped with the cylinder. The utility model discloses through setting recovery mechanism, has the function of the excess refractory material powder that scatters on its surface under the premise of not influencing powder forming press normal work to carry out recovery treatment, thereby solved the problem that the normal production efficiency of powder forming press is affected when the operation of stopping powder forming press work can be carried out to the recovery excess refractory material powder.

This invention belongs to the field of polytetrafluoroethylene (PTFE) gasket production technology, specifically providing a large-diameter PTFE gasket molding device and production method. The large-diameter PTFE gasket molding device includes a pressure molding machine and a feeding assembly. The pressure molding machine includes a molding machine body, a lower mold, and a translation mechanism. The translation mechanism can drive the lower mold to move between the pressing station and the feeding station. The feeding assembly includes a base, a feeding mechanism, a first driving mechanism, and a second driving mechanism. When in the feeding station, the first and second driving mechanisms drive the feeding mechanism to move in the horizontal plane, enabling it to accurately cover the entire cavity area of ​​the lower mold, thus achieving automated material feeding. During the feeding process, the feeding port remains in contact with the upper surface of the lower mold to prevent powder leakage. The pressure molding machine and the feeding assembly work together to achieve automatic feeding of raw materials for large-diameter PTFE gaskets, solving the problems of high labor intensity and low efficiency associated with manual labor.

The application provides a kind of warping compensation control composite moulding forming method and device, comprising: based on fiber layer, product geometry, mould geometry and moulding forming process to establish digital twin model, calculate product warping size deviation and residual stress;In the model, add compensation soft diaphragm, control the forming pressure of different areas of product by designing the thickness of different areas of diaphragm, improve the size accuracy of product;The diaphragm of different thickness distribution of the optimization is laid on the surface of the preformed composite blank;The forming preform containing diaphragm is placed into the component forming mould, and after heating and pressurizing, it is cooled to integrally form composite component;Verify the component forming precision improvement effect, and feedback back to digital twin model.The application has the characteristics of easy control, low cost and quick modification, the soft diaphragm used not only can compensate the size accuracy of product, but also has the effect of easy demoulding, improving fiber body and surface quality.