1021 results about "Thermoforming" patented technology

The invention discloses a hot forming preparation method of a high-temperature superconducting MgB2 wire rod based on resistance heating. The method comprises the following steps: 1, carrying out cold rotary swaging deformation after tubing to obtain a single-core complex; 2, after resistance heating, carrying out hot drawing deformation to obtain a single-core composite round wire; thirdly, the single-core composite round wires are bundled and assembled and then subjected to cold rotary swaging, and a multi-core bundled and assembled complex is obtained; 4, after resistance heating, carrying out hot drawing deformation to obtain a multi-core clustered composite MgB2 round wire; and 5, carrying out vacuum heat treatment to obtain the high-temperature superconducting MgB2 wire rod. Resistance heating is carried out before hot drawing deformation, so that the center Mg rod and the middle Nb barrier layer obtain excellent thermoplasticity, coordinated and uniform plastic deformation of the center Mg rod and the middle Nb barrier layer and the outer Cu sheath and uniform flowing of filled powder are achieved, and the MgB2 superconducting wire which is free of knots on the surface, free of core breakage in the interior and uniform in deformation is obtained and is suitable for the field of high-temperature superconducting. And meanwhile, the machining pass is reduced, the machining time is greatly shortened, and the preparation process is simplified.

Method and system for optically checking molded parts (10) in a transmitted light method, more particularly closures or the like produced by thermoforming or compression molding methods, comprising transporting the molded parts (10) from a transport device (50) through an optical checking area, and recording at least one image of the molded part (10) using a recording device (20), whereby the molded part (10) is located between the recording device (20) and an illumination device (30) and is illuminated by same, whereby the image is evaluated using processing means (40) in such a way that defects of the molded part (10) and / or statistical deviations from a normal distribution are able to be determined, from which conclusions are able to be drawn about a manufacturing process of the molded parts (10) in a molding tool having a cavity, whereby the conclusions are able to be used to control the manufacturing process.

The invention relates to the field of plastic meal box processing, and particularly discloses a plastic meal box positive pressure thermal forming process which comprises the following steps: S1, conveying a plastic sheet to a heating station, and pressing and sealing the periphery of the plastic sheet through a clamp to form an airtight area required by forming; s2, the plastic sheets are subjected to partitioned precise heating and state monitoring, specifically, precise control over the heating process of the plastic sheets is achieved through the following sub-steps; by constructing a partitioned precise heating and closed-loop state monitoring system, a traditional heating process depending on artificial experience is converted into a data-driven intelligent process. A target temperature distribution curve is generated based on a three-dimensional model and material characteristics, a real-time temperature monitoring and predictive control algorithm is combined, a heating strategy is dynamically adjusted, it is ensured that a sheet temperature field rapidly and stably reaches a uniform melting or high-elastic state, and the consistency of heating uniformity and forming quality is remarkably improved.

The invention discloses thermal forming equipment and a thermal forming system, and is applied to the technical field of thermal forming. An upper slide block and a lower slide block; the transmission assembly is installed on the equipment frame, the transmission assembly comprises a power component, a power conversion component connected with the power component, a torque transshipment mechanism connected with the power conversion component and a feedback encoder used for obtaining the rotation angle of the torque transshipment mechanism, and the power conversion component and the torque transshipment mechanism are both in a gear shape; the torque transfer mechanism is used for driving the upper sliding block to move towards or away from the lower sliding block; the power component and the feedback encoder are both connected with the controller, and the controller is used for controlling the power component to act according to the rotation angle, obtained by the feedback encoder, of the torque transshipment mechanism. According to the thermal forming equipment, the moving position of the upper sliding block can be better fed back, the mold closing position precision between the upper mold and the lower mold is improved, and the machining precision of a workpiece is further improved.

The invention discloses a hot melting forming device and method for a synthetic quartz glass cylinder, through modular structural design, the synergistic effect of positioning, exhausting, pressing and forming is achieved, and the hot melting forming device for the synthetic quartz glass cylinder specifically comprises a graphite pressure head connecting rod, a graphite pressure head, a graphite center rod and a forming mold. According to the hot-melting forming method for the synthetic quartz glass cylinder, the device is adopted, a synthetic quartz glass ingot is pretreated, a low-impurity demolding material is laid during assembling, gradient heating is conducted on three temperature areas of a heating furnace, pressurization is conducted after softening, and then differential cooling is conducted, so that efficient preparation of the high-purity synthetic quartz glass cylinder is achieved; and the purity of the finished product meets the strict requirements of high-precision processes such as semiconductor wafer processing and thin film deposition on the material purity. According to the invention, the large-diameter and ultra-long synthetic quartz glass cylinder can be stably produced, the requirement of large-size development of semiconductor equipment is met, and the blank in the field of large-size high-purity quartz glass cylinder preparation in the prior art is filled.

A keyboard membrane, which is a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts, the concave-convex part comprises a plurality of upwardly protruding pressing parts, each of the pressing parts has a top wall and a peripheral wall extending downward from a periphery of the top wall; the keyboard membrane is disposed on a key module with keys; each of the pressing parts is connected with one of the keys of the key module; a periphery of the keyboard membrane has a peripheral edge extending outward from the pressing part, and the peripheral edge wraps the key module to form a waterproof and dustproof keyboard.

The invention provides a hot forming method of a zinc-based coated steel plate, the coated steel plate, a hot forming part and a hot forming system. According to the hot forming method of the zinc-based coated steel plate, cracking caused by brittleness of liquid metal on the surface of the coated steel plate is prevented through the uniform controlled cooling effect of the high-temperature spraying medium, and when the temperature of the steel plate is reduced, cracking caused by the brittleness of the liquid metal can be prevented; and the formed hot forming part is good in surface quality, the defects of piebald and chromatic aberration caused by non-uniform cooling are avoided, high-strength parts within the range of 500-2000 MPa can be formed, the strength of the formed steel plate is guaranteed, and the brittleness problem of liquid metal can be prevented.

The invention relates to the technical field of B column production, and discloses a lightweight B column partition heating forming device and a thermal forming process thereof, the lightweight B column partition heating forming device comprises a machine base, a machine frame arranged on the machine base, a stamping assembly arranged on the machine base and the machine frame, and an ejection mechanism arranged in the stamping assembly; the stamping assembly comprises an upper die base and a lower die base, a die cavity is formed in the upper side of the lower die base, and a partition heating part for conducting partition heating on the B column is arranged in the lower die base. According to the lightweight B column partition heating forming device, a heater in the heating system controls a plurality of heating plates to conduct partition heating on different areas of a B column product, cooling water in the upper die base continuously flows in combination with the cooling system, differential cooling is achieved, and through the partition heating and differential cooling mode, the weight of the B column product is greatly reduced. The performance of each region of a B column product can be effectively guaranteed, unnecessary material use is reduced, the lightweight design of the B column is achieved, the overall weight of an automobile is reduced, and the development trend of lightweight of the automobile is met.

Improved separator film compositions, methods and systems for use in producing thermoformed dental appliances are disclosed.

A thermoforming method for a high-strength steel part. A hot stamping die comprises an upper die (1) and a lower die (2); the lower die is located in a water tank (3); the water tank is used for containing hot water above 60°C; during use, the lower die is partially or completely immersed in hot water; the lower die is provided with at least two sheet supports; each sheet support comprises a fixed rod (7) vertically fixed on the bottom surface of the water tank; the upper end of the fixed rod is rotatably connected to a cross beam (8) by means of a rotating shaft (9); one ends of the cross beams of the sheet supports cooperate with each other to support sheets, and the other ends of the cross beams are rotatably connected to the upper ends of pull rods (10); the lower ends of the pull rods are connected to the fixed rods by means of springs (11); and in an initial state, the height of the cross beams is greater than the liquid level of hot water. Further provided is a low-melting-point coating part with a low micro-crack depth. The low-melting-point coating part comprises a substrate and a low-melting-point coating located on the surface of the substrate; the low-melting-point coating part is formed by hot stamping; micro-cracks are generated in the substrate and the low-melting-point coating in the forming process; and most of the micro-cracks extending from the low-melting-point coating to the substrate are located at concave fillet tangent points of the low-melting-point coating part, and a small part of the micro-cracks extending from the low-melting-point coating to the substrate are located at positions other than the concave fillet tangent points of the low-melting-point coating part. Further provided are a thermoforming method for the low-melting-point coating part, a hot bath edge cutting device for the high-strength steel part, and a method for using the hot bath edge cutting device. According to the thermoforming method, in the direct forming process, the micro-crack expansion process of the low-melting-point coating and the substrate is effectively inhibited, the service life of the low-melting-point coating part is ensured, and excellent corrosion resistance is shown.

The utility model belongs to the technical field of suppository packaging strip processing equipment, and particularly relates to a suppository packaging strip sealing device which comprises a base, a clamping groove is formed in the top of the base, a limiting groove is formed in the inner bottom of the clamping groove, a second packaging strip is movably connected to the top of a first packaging strip, and a mounting groove is formed in the base. A sliding rod is slidably connected into the mounting groove, a first connecting column and a second connecting column are fixedly connected to the top of the sliding rod, the top of the first connecting column and the top of the second connecting column penetrate through the base and are attached to the bottom of the first packaging strip, a movable column is fixedly connected to the top of the sliding rod, and a thermoplastic head is arranged above the clamping groove; and the shape of the thermoplastic head corresponds to that of the clamping groove. Through the arrangement of the sliding rod and the movable column, the suppository packaging strip subjected to thermoforming can be conveniently pushed out from the interior of the clamping groove, and therefore the suppository packaging strip can be conveniently taken; and by arranging the first placing table and the second placing table, the practicability of the device is improved.

The invention relates to a forward extrusion forming device and method suitable for a neodymium iron boron permanent magnet ring. The invention belongs to the technical field of hot forming of rare earth permanent magnet materials, and particularly relates to a neodymium iron boron permanent magnet ring and a forming method thereof. The die mechanism comprises a forward extrusion gasket, a forward extrusion positioning ring, a forward extrusion downward pressing column, a forward extrusion sleeve, a forward extrusion container, a forward extrusion die sleeve, a forward extrusion core column and a forward extrusion pressing ring, the forward extrusion sleeve is positioned through the forward extrusion container, the forward extrusion container is positioned through the forward extrusion die sleeve, and the forward extrusion downward pressing column is positioned through the forward extrusion positioning ring. The blank moves downwards along with downward movement of the forward extrusion pressing ring in the thermal deformation process. The problem that cracks on the inner wall of the magnetic ring are obvious is solved, the magnetic performance uniformity of the magnetic ring is improved, and the subsequent machining cost is reduced.

This thermoforming machine includes a thermoforming chamber having at least one heated air inlet through which heated air flows into the thermoforming chamber at a controlled pressure. The air inlet cooperates with a heated air flow distribution regulator located in the thermoforming chamber and through which the heated air flows out of the thermoforming chamber at a predetermined temperature. The regulator includes a heated air flow regulating mask receiving heated air flow, having a plurality of flow restricting elements providing different air flow restrictions.

The invention is applicable to the technical field of thermal forming dies, and provides a thermal forming part anti-cracking die structure which comprises a base box, the top of the base box is connected with a top plate through a supporting plate, the top of the top plate is provided with a lifting assembly, the lifting end of the lifting assembly is connected with a mounting plate, and the bottom of the mounting plate is connected with an upper die through an upper heating assembly. A force application assembly is installed between the flanging position of the upper die and the installation plate, and buffering assemblies are installed on the left side and the right side of the upper die and located at the lifting end of the lifting assembly. An installation groove is formed in the position, under the upper mold, of the top of the base box, a lower heating assembly is installed in the installation groove, a lower mold is installed on the lower heating assembly, and a forming cavity is reserved above the lower mold; the force application end of the force application assembly applies pressure to the flanging of the upper side of the upper die, so that the pressure applied to the material at the plane and the cambered surface of the lower side of the upper die is consistent when the material is stamped, and the problem that the flanging of the material is broken due to uneven stress in the stamping process is avoided.

The invention relates to the technical field of blister thermoforming, and discloses a high-precision controllable thermoforming method of a blister machine, which comprises the following steps: extracting a feature recognition material type, and calculating to obtain a thermal diffusion coefficient; a temperature field is collected in real time, temperature distribution at the next moment is predicted, a fuzzy rule base is established to dynamically adjust PID parameters, a falling risk coefficient is calculated based on the actually measured temperature, and whether airflow compensation is started or not is judged; a mold cavity structure is constructed, and a vacuum degree curve is set in stages; material flow monitoring is conducted on the material, and the vacuum degree is corrected through fuzzy control; analyzing to obtain a coordinate deviation, and executing dynamic compensation; performing real-time correction according to the coordinate deviation, establishing an inter-station coupling coefficient matrix through multi-station cooperative control, and performing temperature compensation; and constructing a multi-dimensional quality evaluation model, performing analysis to obtain a comprehensive quality index, judging whether to trigger a key parameter optimization process or not based on the comprehensive quality index, and performing real-time feedback optimization.

The present invention discloses a thermoforming mold and equipment, which are applied to the field of thermoforming technology. The thermoforming mold includes: an upper mold and a lower mold, wherein a cavity for placing a workpiece is formed between the upper mold and the lower mold, and a cavity is provided inside each of the upper mold and the lower mold. In addition, a hollow portion is provided at a target position on one side of the upper mold and the lower mold near the cavity, and the hollow portion is connected to the cavity so that a medium in the cavity can be sprayed onto the workpiece through the hollow portion; a plurality of ejectors, wherein the ejectors are installed in the cavity of the upper mold and / or the lower mold; and a plurality of medium pipelines, which are arranged in the cavity and are used to supply medium to the ejectors, and the pressure of the medium pipelines is adjustable. The thermoforming mold provided by the present invention can improve the forming accuracy and efficiency of the workpiece, effectively eliminate the phenomenon of workpiece quenching deformation, and the weldability of the workpiece after quenching is good, and the workpiece surface is not easily oxidized.

The invention relates to a composition for making a film-forming masking coating adhering to at least part of a surface of a substrate intended to be thermoformed for manufacturing a selectively metallized three-dimensional item, said composition comprising at least one organic polymer matrix formed of one or more organic monomers and / or polymers, said polymer matrix being curable to form said masking coating that, after curing, for a thickness of between 0.1 μm and 50 μm, has a deformation ratio at break higher than 30%, at a temperature of between 20° C. and 270° C.The invention is particularly adapted for making a composition suitable for making a coating on the surface of a substrate intended to be thermoformed.

A system for forming a blister package includes a thermoformable film and a lidding film. The thermoformable film has a thermoformable film exterior layer and a thermoformable film interior layer. The thermoformable film exterior layer includes at least 50% by weight polypropylene. The thermoformable film interior layer includes at least 50% by weight polypropylene and (a) a tackifier and / or (b) a cyclic olefin copolymer. The lidding film includes a lidding film exterior layer, a seal layer, and a lidding film interior layer between the lidding film exterior layer and the seal layer. The lidding film exterior layer includes at least 50% polypropylene. The lidding film interior layer includes at least 50% polypropylene and a tackifier. The seal layer includes a polyolefin plastomer.

This thermoforming device, which performs thermoforming of a continuously supplied resin sheet to simultaneously mold two or more rows of containers in the feed direction of the resin sheet, has: protruding linear portions of a leading clamp forming thin-walled portions in a direction perpendicular to the feed direction between the two rows of the containers; and protruding linear portions of an upper mold, wherein the protruding linear portions have a cooling means and do not raise the temperatures of the thin-walled portions to a crystallization temperature during heat set thermoforming.

The invention relates to the technical field of plate thermal forming, in particular to a flitch indirect thermal forming machining process which comprises the following steps that S100, a prepared flitch is subjected to cold stamping, so that the flitch is pressed into a formed blank in a preset shape; s200, the formed blank in the step S100 is put into a heating conveying device through a feeding port to be preheated, and a discharging port of the heating conveying device conveys the preheated formed blank to a hot pressing station from the discharging port; and S300, the preheated formed blank is quenched under pressing of a mold, and a finished product is obtained after cooling and hardening. Wherein the heating and conveying device is at least provided with a feeding port and a discharging port, and the heating and conveying device is used for heating the formed blank and transferring the formed blank to a hot pressing station. According to the invention, the time for waiting for heating the forming material is saved, and the forming period is greatly shortened.

The invention belongs to the technical field of plate vacuum hot forming, and particularly relates to a high-temperature forming vacuum sheath used for forming a metal plate and a plate forming method.The high-temperature forming vacuum sheath used for forming the metal plate comprises an inner-layer soft vacuum sheath body, an outer-layer soft vacuum sheath body, an outer-layer soft vacuum sheath body, an inner-layer soft vacuum sheath body and an outer-layer soft vacuum sheath body, and the hard sheath wraps the outer side of the inner-layer soft vacuum sheath. The plate forming method comprises the following steps that S1, the formed plate blank is placed in the cavity of the inner-layer soft vacuum sheath, and the cavity is sealed after being vacuumized; s2, the inner-layer soft vacuum sheath filled with the formed plate blank is placed in a hard sheath; s3, the hard sheath is placed in a hot press to be machined; and S4, after cooling, the formed component is separated from the inner-layer soft vacuum sheath and the hard sheath, and the formed metal part is obtained. According to the invention, the air exhaust cost can be reduced, the air exhaust quality is improved, and the vacuum hot-pressing forming cost of the plate blank is reduced.

The invention relates to the technical field of automobile part machining, in particular to an automobile part thermal forming die cooling device and system.The heated part is placed in a fixed die, a lifting air cylinder drives a stamping plate to descend, the stamping plate and the fixed die are matched to conduct stamping forming on the part, and the lifting air cylinder is reset after forming; the auxiliary component ejects the formed part out of the fixed die, the formed part can be taken out conveniently, the draught fan enables the connecting box to form negative pressure, the dust suction pipe and the cleaning hopper generate suction force, the driving component drives the sliding block to slide on the sliding guide rail, the sliding block drives the cleaning hopper and the cleaning brush to move back and forth, and the cleaning brush brushes off chippings attached to the stamping plate. According to the cooling device for the fixed mold, brushed-off chippings and chippings in the fixed mold are sucked into the collecting component through the cleaning hopper and the dust suction pipe, the cooling assembly cools the fixed mold while the chippings are cleaned, and the cooling efficiency of the fixed mold can be improved through air flow generated during chipping cleaning.

The invention discloses a composite connection method for a die-casting structural part and a hot-formed steel part, and belongs to the technical field of automobile part production methods. The composite connection method for the die-casting structural part and the hot-formed steel part comprises the steps that according to product requirements, the die-casting structural part is manufactured through a vacuum die-casting process, the hot-formed steel part is manufactured through a hot forming stamping process, and a transition connecting part is manufactured through a cold stamping process; the transition connecting piece and the die-casting structural piece are clamped, the transition connecting piece is attached to the upper surface of the die-casting structural piece, the thermal forming steel piece is clamped, and the thermal forming steel piece is attached to the upper surface of the transition connecting piece; self-piercing riveting is conducted on the die-casting structural part and the transition connecting part according to the self-piercing riveting quality requirement; according to the spot welding quality requirement, spot welding is conducted on the hot-formed steel part and the transition connecting part, the die-casting structural part, the transition connecting part and the hot-formed steel part are connected into a combination, and the connection precision and the connection quality between the die-casting structural part and the hot-formed steel part can be improved.

The present invention discloses a composite material product hot forming servo hydraulic press, which belongs to the technical field of hydraulic presses. The composite material product hot forming servo hydraulic press comprises a machine base, a hydraulic component, a heating component, a fixing plate, a female mold, a female mold assembly block, a driving component, a connecting plate, a mounting plate, a male mold, and a cleaning component. In the present invention, when performing press forming, the side walls of the four female mold assembly blocks are against the side walls of the female mold, so that a forming cavity is formed between the four female mold assembly blocks and the female mold, and then the male mold is driven downward by the hydraulic component so that the composite material semi-finished product placed in the forming cavity can be press formed. After the press forming is completed, the female mold assembly block is driven by the driving component to move in a direction away from the female mold and move upward at the same time, so that the cleaning component can scrape off the particles that fall off the side wall of the female mold assembly block due to thermal friction and the oxide layer during the process of resetting with the male mold upward.

Articles may be formed from a thermoformable composition, the thermoformable composition including: a) about 35 wt % to about 95 wt % of an acrylic pre-polymerized syrup; b) about 0 wt % to about 10 wt % of a comonomer; and c) about 5 wt % to about 65 wt % of a filler having an average particle size (d50) in a range of about 0.1 μm to about 50 μm; wherein the article has a surface having a gloss measurement at a 60° measurement angle within a range of about 0 Gloss Units to about 20 Gloss Units, and a roughness Ra within a range of about 1 microinch to about 100 microinches. Methods may include producing a thermoformed article by the steps of: i) preparing a thermoformable composition; ii) casting the thermoformable composition into a sheet; and iii) thermoforming the cast sheet against a mold to produce a thermoformed article.

A dental appliance manufacturing system includes a plate. Molds of dental arches are to be positioned on the plate. The dental appliance manufacturing system further includes a heating section configured to be adjusted based on the molds positioned on the plate. The heating section is configured to heat one or more sheets of plastic to generate one or more heated sheets. The dental appliance manufacturing system further includes a thermoforming chamber configured to simultaneously thermoform the one or more heated sheets over the molds positioned on the plate to form a plurality of dental appliances.

The invention discloses a lining high-vacuum regulating valve, which comprises a valve body and a valve rod arranged in the valve body, and further comprises a valve core connected with the valve rod and a valve cover provided with a stuffing box, and is characterized in that the inner surface of the valve body is coated with a first lining layer, and the first lining layer and the valve body form a conformal coating structure through a thermal forming process; the outer surface of the valve element is coated with a second lining layer, and the second lining layer and the valve element form a common coating structure through the thermal forming technology. Through the means of combining a high-temperature mold pressing injection molding process and a dovetail groove rivet composite structure, the industrial problems of stripping deformation of a lining material and a metal valve body and medium leakage under the high-vacuum working condition are solved, and the structural stability of the lining layer under the extreme negative pressure and the zero leakage effect of gas-liquid media are obtained; and the equipment reliability and environmental safety of vacuum distillation, negative pressure reaction and other processes in the fields of chemical industry, pharmacy and the like are remarkably improved.

The utility model discloses a buoyancy lift type adjustable positioning tool for a thermal forming die. The buoyancy lift type adjustable positioning tool comprises a positioning tool body, an upper nitrogen spring and a lower nitrogen spring. The upper nitrogen spring is arranged in the upper die, the lower nitrogen spring is arranged in the lower die, the upper nitrogen spring and the lower nitrogen spring are oppositely arranged, and the positioning tool body is fixedly connected to the end of the lower nitrogen spring. During mold closing, the upper nitrogen spring and the lower nitrogen spring abut against each other to drive the material sheet to descend to a forming working face along with the positioning tool body. And during mold opening, the upper and lower nitrogen springs are reset, and the positioning tool body returns to the initial position. The positioning tool adapts to thermal forming parts with different heights through adjustment of the upper nitrogen spring and the lower nitrogen spring, the strength of the positioning tool is enhanced, the risks of positioning tool breakage and die damage are reduced, and the positioning precision and the thermal forming quality are improved.

The present application discloses a thermoforming device for composite plastic sheets, and relates to the technical field of thermoforming devices, which includes a frame, a clamping frame, a processing frame and a supporting frame, wherein a thermoforming mold and a vacuum mechanism are arranged on the frame; the clamping frame, the processing frame and the supporting frame are all slidably arranged on the frame, and a plastic sheet that can fit with the mold opening of the thermoforming mold is arranged on the clamping frame; a pretreatment mechanism for processing the plastic sheet into a prototype that matches the thermoforming mold is arranged on the processing frame; a supporting assembly that cooperates with the pretreatment mechanism is arranged on the supporting frame, and can make the outer wall of the prototype correspond to the inner wall of the thermoforming mold, and make the distance between the outer wall of the prototype and the corresponding points on the inner wall of the thermoforming mold keep synchronous and uniform changes and finally keep the same, and the vacuum mechanism is configured to absorb the air between the prototype and the thermoforming mold. The thermoforming device provided by the present application can make the thickness of the plastic sheet more uniform after forming.