42results about How to "Act as a pressure buffer" patented technology

The invention discloses a package sealing airtightness detection device, and the device comprises a rack, a supporting platform disposed on the rack, an air cylinder disposed on the rack, a pressure plate which is connected with the air cylinder and located exactly above the supporting plate, a pressure sensor which is disposed on the supporting platform, and an image collection sensor which is disposed on the rack and faces the supporting platform. The pressure plate is used for applying pressure to a package bag, and the pressure sensor detects the value of the pressure. The image collection sensor monitors the condition of the package bag, thereby judging whether the sealing of the package bag meets the requirements.

The invention discloses a shell embossing device of electronic product production in the technical field of shell embossing. The device comprises a bottom supporting table. The top of the bottom supporting table is provided with a vertical plate. The rear end of the vertical plate is provided with a motor mounting plate. The top of the motor mounting plate is provided with a driving motor. The front end of the vertical plate is provided with a fixing block. A clamping rod is located in a shifting groove. The bottom of the left and right sides of an upper and lower swing rod is connected with pressing rods. The middles of the outer walls of the pressing rods are sleeved with pressing rod sleeves. The bottoms of the pressing rods are provided with pressing heads. Four sets of movable rods are movably inserted into the left side and the right side of the top front side of the bottom supporting table. The outer walls of the movable rods are covered with compression springs. Electronic product placement seats are arranged at the tops of the movable rods. Elastic clamping blocks are arranged on four sides of the top of the electronic product placement seats. According to the shell embossing device of electronic product production, shell embossing of left and right two groups of electronic products can be rapidly conducted according to the lever principle, and the embossing operationis quick and efficient.

The invention provides a well drilling high strength pressure-bearing plugging agent and an application thereof, the plugging agent including: 20-30 parts of PPS plastic granular material, 15-30 partsof a graphite type granular material, 35-45 parts of a granular filling material, and 3-10 parts of a fiber material, the mass parts of the components adding to 100 in total. The graphite type granular material is selected from one or more of natural graphite granules and expanded graphite granules, the size being 40-80 meshes under standard screening sieve. The granular filling material mainly includes CaCO3 or silicate. The pressure-bearing plugging agent has high strength in main material, and is not liable to break under the complex stress status in a well; by means of the graphite type granular material, the granular filling material and the fiber material, a stable and solid blocking layer can be formed; in addition, the pressure-bearing plugging agent is high in temperature resistance, so that failure due to deterioration of the materials at high temperature is avoided. The pressure-bearing plugging agent can satisfy the demand of improving pressure-bearing capability of a stratum in deep well drilling.

The invention relates to a solder wire soldering flux capable of reducing splashing and a preparation method thereof. The soldering flux is composed of the following components in percentage by weightof 1.0-10.0% of compound organic acid, 0.2-5.0% of compound activator, 0.1-1.0% of compound defoamer, 2.0-10.0% of compound solvent, 0.1-1.0% of antioxidant, 0.1-1.0% of corrosion inhibitor and the balance of compound rosin. The preparation method comprises the following steps of heating, stirring and melting the compound rosin, adding the compound organic acid and the low-melting-point indissolvable activator, adding the solution dissolved with the high-melting-point dissolvable activator, the antioxidant and the corrosion inhibitor, finally adding the compound defoamer, performing continuous stirring at the constant temperature of 145-165 DEG C, performing full dissolving, and performing uniform mixing, thereby obtaining the soldering flux. The soldering flux is high in activity, easy to tin during welding, low in corrosion, small in residue and high in insulation resistance, the splashing number and the splashing distance of the soldering flux and tin beads in the welding process of a lead-free tin wire can be greatly reduced, the RoHS instruction is met, and the reliability of electronic and electrical products after welding is guaranteed.

The invention provides a light cold-mixed resin steel bridge deck pavement material. The steel bridge deck pavement material consists of cold-mixed resin, mineral aggregate and fibers, wherein the mass ratio of the cold-mixed resin to the mineral aggregate is (11-20):100; the mineral aggregate comprises light high-strength coarse aggregate, fine aggregate and mineral powder; the mass percentage of the light high-strength coarse aggregate in the mineral aggregate is 20-45 percent; the fibers are chopped steel fibers, and the total mass is 0.5-2 percent of the mass of the steel bridge deck pavement material. The steel bridge deck pavement material is low in density and high in performance, and can play a role in reducing the constant load on a steel deck on the premise of keeping the thickness of a bridge deck pavement structure invariable; or the rigidity of a deck system is enhanced by increasing the thickness of a pavement layer under the condition of keeping the constant load on the deck invariable.

The invention relates to opening hot-pressing equipment for an underpants elastic band. The equipment comprises a rack, a first air cylinder is fixed to the rack, a hot-pressing device used for hot pressing is fixed to the first air cylinder, an opening device used for opening an underpants elastic band and a first driving mechanism used for driving the opening device to move to open the underpants elastic band are arranged on the rack, a workbench is further fixed to the rack, when the underpants elastic band is unfolded by the unfolding device, the two sides of the underpants elastic band are arranged in the circumferential direction of the side face of the workbench in a winding mode, and the hot-pressing device is located above the workbench. The equipment has the advantages that: theunderpants elastic band and underpants can be better attached, and the underpants elastic band can bond the underpants in a more all-around mode.

The invention relates to a high-pressure-impact-prevention and antifreezing device of a transmitter diaphragm. The device comprises an antifreezing component and an impact prevention component. The antifreezing component and the impact prevention component are connected through a connection pipe and a joint. The impact prevention component comprises an impact prevention device shell, a guiding pressing pipeline, a guiding pressing casing pipe, a thrust conversion mechanism, a high and low pressure switching mechanism and a position detection mechanism, wherein the guiding pressing pipeline, the guiding pressing casing pipe, the thrust conversion mechanism, the high and low pressure switching mechanism and the position detection mechanism are arranged in the shell. The guiding pressing pipeline is arranged in the guiding pressing casing pipe. The upper portion of the thrust conversion mechanism is connected to the position detection mechanism, and a lower portion is connected to the high and low pressure switching mechanism. The structure of the device is simple and operation is convenient. The cut-off effect of a pipeline can be normally measured when there is high pressure and thesafety of the transmitter diaphragm is guaranteed.

The present invention relates to the field of display technology, in particular to a pressure detection paper and a preparation method thereof, comprising a paper layer and a pressure-sensitive color-developing layer adhered to the paper layer, wherein the pressure-sensitive color-developing layer is prepared from the following raw materials by weight : 15-30 parts of leuco dye microcapsules, 9-18 parts of spacer, 10-15 parts of adhesive, 15-30 parts of developer microcapsules, 1-3 parts of surfactant and 30-45 parts of solvent. The pressure detection paper has a flat surface and a smooth surface, and the pressure-sensitive color developing layer coated on the paper layer is not easy to drop powder, has stain resistance and yellowing resistance, and has good color development density and color development speed.

A solder wire flux capable of reducing spatter and a preparation method thereof, the flux is composed of 1.0-10.0% compounded organic acid, 0.2-5.0% compounded activator, and 0.1-1.0% compounded defoamer , 2.0-10.0% compound solvent, 0.1-1.0% antioxidant, 0.1-1.0% corrosion inhibitor and the balance compound rosin. Heat and stir the compound rosin to melt, then add compound organic acid and low melting point insoluble activator, then add solution with high melting point soluble activator, antioxidant and corrosion inhibitor, and finally add compound defoamer, Constant temperature of 145-165°C and continuous stirring to dissolve fully and mix evenly to prepare soldering flux. The flux of the present invention has high activity, easy soldering, low corrosion, small residue, and high insulation resistance, which can greatly reduce the amount and splash distance of flux and tin beads in the soldering process of lead-free tin wire, and meet the RoHS directive , to ensure the reliability of electronic and electrical products after welding.

The invention discloses a hydrogen-nickel battery negative electrode sheet and a method for manufacturing a hydrogen-nickel battery using the same. The negative electrode sheet is a double negative electrode sheet, and the manufacturing method comprises welding a single negative electrode short sheet at the end of a single negative electrode long sheet through a negative electrode connection substrate. Double negative electrode sheet, first weld a small piece of protective film with a width larger than the width of the negative electrode connection substrate on the diaphragm corresponding to the connection seam of the double negative electrode sheet, and then place the diaphragm welded with the protective film between the positive and negative electrode sheets, and then place the The double negative plate, diaphragm, and positive plate are rolled into a cylindrical shape and loaded into the battery case, and finally the nickel-hydrogen battery is assembled by injecting electrolyte, installing a cap and sealing ring. It can effectively control and manufacture pole pieces with different thicknesses and different amounts of negative electrode active materials, improve the utilization rate of negative electrode active materials and the performance of the battery, correspondingly reduce the thickness of double negative electrode pieces and occupy the volume of the shell, and reduce the battery life. The manufacturing cost and assembly difficulty significantly improve the manufacturing efficiency of the battery, and are especially beneficial to the manufacture of high-capacity batteries.

The invention belongs to the technical field of pipelines, and provides a high-pressure-resistant and impermeable heat-preservation composite pipeline and a preparation method thereof. The heat-preservation composite pipeline comprises an inner-layer working layer, a middle-layer insulating layer and an outer-layer protective layer which are sequentially arranged from inside to outside, wherein the inner-layer working layer comprises an impermeable barrier layer, a polyethylene material layer, a modified reinforcing layer, a heat-sensitive micro-foaming adhesive layer and a prepreg tape winding layer which are sequentially arranged from inside to outside, wherein the polyethylene material layer is a PERT-II type high-density polyethylene material layer, the impermeable barrier layer is made of nylon MXD6 or ethylene / vinyl alcohol copolymers, the modified reinforcing layer is a glass fiber reinforced nylon MXD6 layer, the prepreg tape winding layer is a glass fiber reinforced polyethylene prepreg tape layer, and the modified reinforcing layer is composed of the following components of, in parts by weight, 35-50 parts of nylon MXD6, 15-50 parts of glass fiber, 0.2-1 part of a silanecoupling agent, 1-2 parts of an antioxidant, 0.5-1 part of a lubricant and 5-15 parts of a toughening agent. The heat-preservation composite pipeline and the preparation method solve the problem thatthe high-density polyethylene composite heat preservation pipeline is low in pressure resistance.

A medical guide wire comprises a flexible strip-shaped core shaft, a guide wire head end positioned at the head part of the core shaft and a coating layer covering the core shaft and made of flexible material, wherein the guide wire head end is hollow and spindle-shaped and has a smooth surface, and provided with flexible strip-shaped petals; the strip-shaped petals are arranged in the axial direction. The guide wire can buffer the pressure to the cavity passage by the guide wire through self-deformation, lowers the risk of cavity passage punching, and reduces the risk of clinical operation.

The invention relates to a bottle pushing machine for production of a glass bottle and provided with a pressure buffering device. The bottle pushing machine comprises a bottle pushing device, wherein the bottle pushing device comprises a groove plate for bottle pushing; the pressure buffering device is arranged on the bottle pushing device; the pressure buffering device comprises a corrugated suction disk, a spring suction disk, an airbag suction disk and a flexible ball push plate; the corrugated suction disk and the spring suction disk are arranged on the two sides of an upper bracket correspondingly; and the airbag suction disk and the flexible ball push plate are arranged on the two sides of a lower bracket correspondingly. The bottle pushing machine can achieve a pressure buffering effect, avoids damage to the glass bottle and improves the production efficiency and the product quality.

The invention relates to a cylindrical lithium-manganese dioxide battery. The safe cylindrical lithium-manganese dioxide battery comprises a battery case and a safe structure winding core positioned in the battery case, wherein a positive plate is connected with the battery case by a lug, a negative plate is connected with a seal assembly by the lug, and both ends of the safe structure winding core are respectively provided with an upper insulating ring and a lower insulating ring which play the roles of isolation, insulation, supporting and shock absorption. A circular cover plate of the hotmelt electrolyte corrosion-resisting seal assembly is connected with the battery case by way of welding. The seal assembly comprises a T-shaped terminal post, sealed insulating plastics, the circularcover plate and a connecting ring. A self-starting blast-proof pressure relief device is designed on the top of the battery case and comprises a pressure release valve, a deformable groove, a positive terminal and an air chamber. The cylindrical lithium-manganese dioxide battery optimizes the dimension scales of the positive plate and the negative plate of the winding core, as well as the seam assembly, the sealing material quality and the pressure relief device on the battery case, thereby enhancing the safety of the battery, prolonging the storage life thereof and reducing the cost of production and materials simultaneously.