20 results about "Low pressure molding" patented technology

A sealing mechanism is provided, including a housing, a groove, and a sealing element. The housing includes a first member and a second member, and the groove is formed between the first and second members. The sealing element is formed in the groove by Low Pressure Molding (LPM) and surrounds at least one of the first and second members.

The invention discloses a light-weight aluminum alloy casting low-pressure forming device and an operation technology, and the light-weight aluminum alloy casting low-pressure forming device comprises a heat preservation furnace which is installed on a lifting base and is provided with a liquid rising pipe, an opening and closing cylinder installed on a support, and an upper mold installed at the lower end of the opening and closing cylinder, a connecting pipeline matched with the output end of the air compressor is arranged on the outer wall of the heat preservation furnace, a pressure relief pipeline is further arranged on the heat preservation furnace, and the heat preservation furnace further comprises a gas rapid filling unit. The low-pressure casting machine is provided with the quick gas filling unit, so that a large amount of nitrogen can be quickly filled into the furnace, the gas filling time is shortened, the working efficiency of the low-pressure casting machine is greatly improved, and the quick gas filling unit can be repeatedly used by releasing the nitrogen in the furnace into the hollow pipe for the first time; and meanwhile, the nitrogen is extruded by the gravity of the heavy object to maintain the air pressure in the furnace to reach a set constant pressure range, and the device is also suitable for different liquid levels of molten aluminum alloy in the furnace.

The invention discloses a preparation method of high-temperature magnetic slurry for an inductor capable of being formed at low pressure, and relates to the technical field of electronic component materials. Magnetic powder is pretreated through a coupling agent, a uniform molecular layer can be formed on the surface of the magnetic powder, the acting force between the magnetic powder and organic molecules of a glue solution is improved, dispersity is enhanced, and eddy-current loss is reduced; the epoxy resin system with a specific ratio uniformly coats the magnetic powder by means of a high-speed rotation mode of a homogenizer, and can be converted into a viscous flow state after being heated, so that the magnetic powder has excellent warm-pressure fluidity, improves the magnetic density through pressing, can be matched with a curing agent to be rapidly cured, can be stably formed under the low pressure of 30-50 MPa, and avoids coil damage and magnetic core cracking; and the method is suitable for preparation of complex-structure composite inductors.

The invention provides an amorphous integrally-formed inductor based on ultra-low-voltage forming and a preparation method of the amorphous integrally-formed inductor, and relates to the field of inductor ultra-low-voltage forming, and the method comprises the steps that prepared amorphous powder is obtained and pressed to obtain a compact amorphous T-shaped magnetic core; winding the amorphous T-shaped magnetic core, welding a material sheet to lead out a terminal on the wound magnetic core to obtain a coil-amorphous magnetic core, and placing the welded coil-amorphous magnetic core in a forming die for powder filling and low-pressure pressing to obtain an inductor body; performing spraying rust prevention treatment on the inductor body to obtain a prefabricated inductor; and removing the pins of the prefabricated inductor to obtain the amorphous integrally-formed inductor. The amorphous powder with low loss and high magnetic conductivity is adopted to form the integrated inductor in an ultra-low voltage mode, the deformation of the copper wire and the risk of high-voltage turn-to-turn short circuit of the copper wire are reduced, the risk of open circuit caused by high voltage at the welding point of the copper wire is also avoided, and the reliability of the integrated inductor is improved.

An article includes a hollow enclosure defining a void. The void has a first section and a second section separate from the first section. An electronic component is housed in the first section and the second section of the void. A low pressure mold material is molded into the first section of the void and cured around a first segment of the electronic component to encapsulate the first segment of the electronic component. A support seal is inserted into the second section of the void adjacent a second segment of the electronic component. The support seal defines a sealing barrier on one side of the low pressure mold material that limits the flow of low pressure mold material out of the first section of the void.

The present invention relates to a low pressure molding process employing a polyolefin copolymer-based molding material for manufacturing an article requiring alcohol resistance and the use of the polyolefin copolymer based materials for low pressure molding applications.

Disclosed are an inductive component and a preparation method therefor and an application thereof. The preparation method comprises the following steps: (1) mixing and granulating a first magnetic alloy powder, a second magnetic alloy powder, and a binder, and then performing pressing, and baking and curing the pressed blank to obtain a magnetic central core; (2) combining the magnetic central core obtained in step (1) with a coil and placing into a mold cavity, injecting a cladding powder slurry, and then baking to obtain a semi-finished component; and (3) coating an insulation layer on the surface of the semi-finished component obtained in step (2), performing paint stripping, and then performing electroplating to form an electrode layer to obtain the inductive component. By performing the low-pressure forming process, the inductive component provided by the present application has the advantages of low basic pressure between the coil and the powder, small change of the DC impedance of the coil and small internal stress of the powder, solving the problems of high interlayer defect rate and interlayer short circuit of the products caused by serious insulation damage of the powder under high pressure in the existing process.

The utility model discloses a waterproof connection stable charging seat, which comprises a shell, an external connection hole is arranged on the shell, a butt joint groove is formed on the shell, and a special-shaped hole site is convexly formed in the butt joint groove; a protective layer; a PCB (printed circuit board), wherein an interface is arranged on the PCB; a magnetic ring; and at least two spring needles. According to the utility model, the spring needle passes through the special-shaped hole site and is fixed on the PCB in a welding manner, the contact pressure is strong during charging so as to effectively reduce the impedance and enhance the charging efficiency, and meanwhile, the protection layer formed at low pressure is arranged outside the PCB, so that the waterproof and dustproof effects can be effectively realized, the hardness of the product can be improved, and the charging efficiency is ensured while the product quality is improved. And good waterproof and dustproof performance is possessed, and the product force is effectively improved. Besides, a magnetic ring is arranged in the butt joint groove so as to attract an external socket during charging, so that the charging seat is effectively prevented from being accidentally separated, the connection stability during charging is enhanced, and the charging seat has great market competitiveness.

The present invention discloses a low-pressure forming device and operation process for lightweight aluminum alloy castings, including a holding furnace installed on a lifting base and equipped with a riser pipe, a clamping cylinder installed on a bracket, an upper mold installed at the lower end of the clamping cylinder, a lower mold arranged below the upper mold, a connecting pipe adapted to the output end of an air compressor arranged on the outer wall of the holding furnace, a pressure relief pipe also arranged on the holding furnace, and further including a gas rapid filling unit. By setting the gas rapid filling unit, a large amount of nitrogen can be rapidly filled into the furnace, reducing the inflation time and greatly improving the working efficiency of the low-pressure casting machine. Moreover, by discharging the nitrogen in the furnace to the hollow pipe for the first time, the gas rapid filling unit can be reused. At the same time, the gravity of a heavy object is used to squeeze the nitrogen to maintain the furnace pressure within a set constant pressure range, which is also applicable even for different liquid levels of the aluminum alloy melt in the furnace.

The invention discloses an electrolyte membrane, a preparation method thereof and an all-solid-state battery. The electrolyte includes at least: an inorganic electrolyte; an organic electrolyte composite, the organic electrolyte composite comprising: a porous material; and an organic electrolyte. The electrolyte compound is obtained by introducing the porous adsorption organic electrolyte, so that the solid-state battery with the electrolyte compound can realize low-voltage forming and low-voltage working, and excellent electrical performance and thermal stability are realized.

The utility model discloses a kind of low-pressure injection mould for lithium battery sealing element, it is related to injection mould technical field, for the forming of the sealing plastic piece of the two ends of lithium battery core, the injection mould includes lower mould of upper mould, lower plate, intermediate plate, spacer plate and bottom plate, the upper mould includes upper plate, the inside of the upper plate is equipped with two groups of feeding block, the inside of each feeding block is equipped with two feeding ports, the top of the lower plate is also provided with two groups of LR sliding block, the sliding block is provided with inclined column insertion hole.The utility model in operating process, for security, cannot exert too large pressure and too high temperature to it, therefore by the setting of the low-pressure forming mould of the utility model, when clamping, inclined column drives LR sliding block to be pressed to the middle, when opening mould, inclined column drives LR block to be pulled apart to two sides, so that the mould is convenient to take and place product, convenient to use.

The present invention discloses a powder component composite pressing system and a molding method. The powder component composite pressing system includes a first pressing and molding unit, a transfer unit, and a second pressing and molding unit. The first pressing and molding unit is used for pre-pressing Class A materials, the rectifying slide is used for transferring the preformed products after pressing, the transfer unit includes a conveyor belt and a manipulator, the conveyor belt is used for screening and transferring the preformed products; the second pressing and molding unit is used for composite pressing of Class A material preforms and Class B materials. According to the powder component composite pressing system and molding method of the present invention, Class A materials with low molding process difficulty are pressed by the first pressing and molding unit, and then transferred to the second pressing and molding unit by the transfer unit, and composite pressed together with Class B materials, so as to realize the processing of pressed products of different materials, with high production efficiency and low production cost.

The present invention provides an iron-based soft magnetic alloy powder having high fluidity and thus being able to obtain high filling even in a low pressure molding method. A crystalline iron-based soft magnetic alloy powder is provided, which contains 0.5 to 10 weight % Si, 0 to 7 weight % Cr and 0.01 to 1.2 weight % Al, and the remainder is composed of Fe and inevitable impurities. The crystalline iron-based soft magnetic alloy powder may also contain 0.001 to 0.01 weight % Ca.

The invention discloses a soft magnetic composite magnetic powder core preparation method based on low-pressure forming and a product thereof, and the method comprises the following steps: performing ultrasonic dispersion on magnetic powder and flexible insulating flaky ceramic powder, and then drying to obtain composite magnetic powder coated with the flexible insulating ceramic powder. The mixed material and epoxy resin are placed in an internal mixer to be melted and mixed, and uniform magnetic powder-resin feed is obtained; cooling and crushing the mixed material to obtain soft magnetic composite magnetic powder core granules, and finally performing hot-pressing curing under the pressure of 10-30MPa and at 160-180 DEG C to obtain the high-frequency high-magnetic-conductivity low-loss soft magnetic composite magnetic powder core. The talcum powder is introduced and cooperates with the epoxy resin through plastic deformation to form a flexible insulating layer, and compared with rigid filler (such as Al2O3 / SiO2), the flexible insulating layer additionally provides a stress buffering function, so that high-frequency loss is further reduced on the basis of ensuring high magnetic conductivity.

The utility model relates to an embedded laminated terminal injection molding part, which comprises a plurality of laminated terminals, a low-pressure molded first injection molding material is arranged between the adjacent terminals, and the low-pressure molded injection molding material supports and insulates the adjacent terminals. The periphery of the terminal and the first injection molding material is wrapped with a second injection molding material formed by high pressure. Since the first injection molding material formed by low-pressure molding is arranged between the adjacent terminals in advance, during high-pressure injection molding, in the process that the second injection molding material wraps the terminals and the first injection molding material to form the injection molding part, due to the supporting and insulating effects of the first injection molding material, the terminal and the first injection molding material are not easy to deform; the high voltage does not eliminate the gap between the adjacent terminals so as not to cause abnormal electrical insulation.

The present application relates to a kind of card pressure pipe forming methods of guiding pressure and flow, which is by setting the guiding pressure and flow hole at the low-pressure forming section of punch, during the expansion of punch, the liquid in the liquid channel in punch enters into the low-pressure forming section of punch through the guiding pressure and flow hole, and enters into the inner wall of die cavity and the outer wall of pipe blank between;So that the liquid pressure inside and outside pipe blank is equal, so as to prevent pipe blank from swelling deformation under the action of internal and external pressure;The punch of greater friction resistance or the punch of high-pressure sealing section that first contact with the end of pipe blank will push the axial movement of pipe blank, until the high-pressure sealing section of two groups of punch is contacted with the end of pipe blank, and the centering of pipe blank is realized;Two groups of punch continue to move towards each other, while increasing the injection amount of liquid medium, so that the liquid medium between the inner wall of pipe blank and the high-pressure sealing section of punch promotes the swelling deformation of the forming site of pipe blank, until the outside of the forming site cooperates with the inner wall of die cavity, so as to complete the forming of card pressure pipe.

The invention discloses an isostatic forming die for an internal channel of a material. The isostatic forming die comprises an isostatic pressing die, a low-pressure forming die, an internal channel die and a bar support. Putting an isostatic pressing mold with an upper opening into a low-pressure forming mold, pouring an isostatic pressing working medium which is the same as that of an isostatic pressing machine into an inner channel mold pipeline material of which the length is not less than the total length of an inner channel, and sealing two ends of an inner channel mold pipeline after the working medium is filled; the method comprises the following steps: putting a workpiece into an isostatic pressing die, carrying out loop binding and fixing by using a wire and bar bracket to form a workpiece inner channel die which is completely consistent with the design, punching holes in the isostatic pressing die corresponding to the two ends of the inner channel die, enabling the two ends of the inner channel die to penetrate out of the holes, and then carrying out sealing seamless bonding on the two ends of the inner channel die and the isostatic pressing die. The invention provides an isobaric forming method for machining of an internal channel of a workpiece with a homogeneous material or solid powder as a base material.

The present invention relates to a dry film-forming method, a dry electrode pole piece, a preparation method thereof, and a battery. The dry film-forming method reduces dependence on mechanical shearing through pre-fiberization treatment of an adhesive, thereby reducing energy consumption. The method adopts graded rolling technology, first low-pressure molding, and then high-pressure densification, thereby improving the pressing effect. In addition, electrostatically assisted compounding and segmented electrification are adopted to increase charge density, improve interfacial contact through charge action, overcome the defect of insufficient bonding force, enhance the bonding strength between the dry electrode film and the current collector, and improve the electrode quality.

The utility model provides a low pressure forming die of flow guide pipe relates to metal atomization powder making technical field. Including base, the top of base is inserted with forming insert piece, the top around forming insert piece is provided with male die lining, is provided with fixed outer sleeve on the outside of male die lining and base, is embedded with top cover on fixed outer sleeve and male die lining, and forming insert piece, base, male die lining and top cover form the loading area. This forming die has reduced the production period of flow guide pipe, and the shortest 2 hours complete flow guide pipe finished product's processing, has reduced the production cost of flow guide pipe, and the production cost is not more than 10% of isostatic pressure forming process cost, has realized light weight, has reduced equipment investment cost with the middle pressure, low pressure forming process, and in the case of lacking the middle pressure, low pressure mechanical equipment, also can realize stable production with manual ramming, has high mobility and practicality, and the flow guide pipe finished product of batch production meets the production demand of metal atomization powder completely through production application.