113results about How to "Save process" patented technology

Drilling method of carbon dioxide laser includes steps: preparing locating point on layer next to the outer layer; before pressfitting added layer, browning oxidizing surface of target bonding pad; after pressfitting added layer, milling location hole / polishing edge, washing surface under high pressure; browning front surface of copper, thinning and coursing the surface before drilling hole by layer; first time to drill hole by laser; positioning film perforation by using plate location hole in original etching method for making window of copper, burning through copper foil and resin above the locating point on layer next to the outer layer so as to expose the locating point; second time to drill hole by laser; using the exposed locating point as position fixing to make micro hole inplate; washing surface under high pressure to remove browning layer after drill hole. The invention saves dry film and etching liquid, and raises process precision.

The invention discloses a method for producing synthetic leather by using a solvent-free double-component polyurethane scraping and coating method and the synthetic leather produced by using the same. The method comprises the following steps: (1) controlling the flow of a material loading machine so that an M material and an N material are mixed in the mixing chamber of the material loading machine and then poured, scraped and coated to release paper coated with an isolation layer, drying so as to obtain a foamed material layer, wherein the coating amount of scraping and coating is 50-2000g/m<2>; (2) pressing and compounding the foamed material layer, heating and solidifying; and (3) coiling, curing, and separating out the release paper at last, so as to obtain the synthetic leather finished product. According to the invention, an organic solvent and water are not used in the synthesis and mixing of polyurethane resin on a foaming layer and a bonding layer and in the various links of embarkation. Compared with the method for producing the foaming layer with a water-based polyurethane composite material, the method disclosed by the invention can greatly reduce energy consumption; and the synthetic leather has good property and excellent hand feeling.

The invention discloses a method for breeding functional formula rice varieties, belonging to the technical field of special rice breeding. The method is characterized by comprising the following steps of selecting a rice variety with larger extending area and good quality in production as the recurrent parent, crossing the recurrent parent with black rice, purple rice, red rice, glutinous rice and giant embryo rice respectively, backcrossing the offsprings with the recurrent parent, breeding the near-isogenic lines which have agronomic traits similar to the agronomic traits of the recurrent parent and respectively have the traits of the black rice, purple rice, red rice, glutinous rice and giant embryo rice and mixing the seeds in proportion to prepare the seeds for production of the formula rice. The method has the following beneficial effects that after the formula rice varieties bred by the method are planted, the shapes of plants and leaves and the agronomic traits are neat and consistent; the rice obtained by grinding unhulled rice can simultaneously contain the five functional rice, namely the black rice, the purple rice, the red rice, the glutinous rice and the giant embryo rice; the functional formula rice can be produced by planting the seeds; the production method is simple and is high in efficiency and good in benefits; and the produced high nutrition functional formula rice integrates color, aroma, taste and nutrition curative effect and has good health care function.

The invention discloses a method for extracting stevioside from fresh stevia rebaudiana leaves, which comprises: crushing fresh stevia rebaudiana leaves with homogenizing crushing equipment under a condition of water, performing pressure filtration in continuous automatic discharge filtering equipment, subjecting the filtrate to flocculation by mixed flocculating agent; and absorbing by resin, analyzing, desalting and decolorizing by resin, concentrating and spray drying to obtain the stevioside product. In the invention, time and working procedures are saved, a long-distance transport process is avoided, raw material cost is lowered, discharge of waste water is reduced greatly, and clean production can be realized basically.

The present invention relates to a making method of a vapor barrier film for a vacuum heat insulating shield, and a choke film of the vacuum heat insulating shield special for construction. The choke film not only satisfies the high choke performance needed by the vacuum heat insulating shield, but also has the advantages of puncture resistance, weather resistance, cracking resistance, easy hot sealing and good protective effect. The making method uses the following technical scheme: upper-layer material is fed to the topside flow way, and middle-layer material, lower-layer material, binder between the middle-layer material and the upper-layer material and binder between the middle-layer material and the lower-layer material are fed to each flow way of a module in turn; the upper-layer material is selected from PDVC, PS or PET, the middle-layer material is selected from PE, PVOH, PA, EVOH, EVA, PET or PP, and the lower-layer material is PE; a film bubble pipe is extruded through the module; the film bubble pipe is cooled; a clamping plate device in a shape of a character of 'ren' is leaded in to planish the film bubble pipe; and a single-layer flat film of 50 t 200 mum is made through a winder.

The invention discloses a hot rolled bainitic steel rail and a production process. The hot rolled bainitic steel rail comprises the following chemical compositions in percentage by weight: 0.10 to 0.35 percent of C, 0.80 to 2.00 percent of Si, 0.80 to 3.30 percent of Mn, less than 2.00 percent of Cr, 0.0010 to 0.0100 percent of N, 0.01 to 0.10 percent of Nb, 0.02 to 0.2 percent of V, 0.005 to 0.06 percent of Ti, 0.10 to 0.40 percent of Mo, less than 0.00005 percent of H and the balance of Fe and inevitable impurities. The process is characterized in that: a hole pattern method is adopted for the rough rolling of the steel rail, a universal method is adopted for the precision rolling of the steel rail, the rolling interval of adjacent passes in the rough rolling is controlled to more than 5 seconds and not more than 35 seconds, and the steel rail after the rolling is naturally cooled in the air to room temperature. The production process limits the size of residual austnesite in M-A islands and between lath bainitic ferrite; the proportion of the lath bainitic ferrite is over 75 percent; comprehensive indexes of performance such as specific elongation and the like are improved; and the production process can be also applied to turnout bainitic steel rails and bainitic AT rails.

The invention relates to a method for producing an anti-corrosion pattern in production of a printed circuit board, and the method comprises the steps of: drilling a hole, metalizing the hole, performing electrophoretic coating of a resist, producing the anti-corrosion pattern by laser, performing chemical etching and the like. The method with the electrophoretic coating of a resist and the production of the anti-corrosion pattern by the laser is adopted for replacing an existing tenting method process with the steps of hot-press lamination of an anti-corrosion photoinduced masking dry film, exposure, developing and the like or replacing the steps of pattern electroplating of an anti-corrosion metal layer and the like. According to the method disclosed by the invention, a process route for producing the anti-corrosion pattern is shortened, the operation steps are simplified, the operability is improved, the anti-corrosion coating is applied by electrophoresis, materials are easy to obtain, the operation is simple and easy, and the formed anti-corrosion coating is thin in thickness, uniform and reliable; and the anti-corrosion pattern formed by direct photoetching through the laser method is high in precision, good in an environment and great in production flexibility. The method disclosed by the invention is suitable for sample, small-batch, multi-variety and higher-precision production of the circuit boards, and is also suitable for production of ordinary circuit boards.

The invention relates to a method for extracting gallium and germanium from zinc smelting slag, in particular to a method for wet extraction of gallium and germanium metals from zinc smelting slag. The method is characterized in that: in the extraction process, the zinc smelting slag is subjected to two-stage acid leaching, the gallium is leached out in the first stage, and then the acid leaching slag after the gallium is leached out is subjected to the second-stage acid leaching, so that the germanium is leached out. According to the method, the leaching characteristics of scattered metal enriched slag gallium and germanium and the extraction characteristics of the gallium and the germanium are found in experiments, a process flow that the gallium and the germanium are leached out and extracted by steps to enrich the gallium and the germanium is provided, so that the germanium leaching and extraction form a closed loop, the alkali neutralization work procedure is eliminated, the alkali consumption is eliminated, the acid consumption is reduced, and the wastewater drainage is reduced.

The invention discloses an integrally-molded shoe sole. The shoe sole comprises an insole molded through foaming and an outsole molded without foaming. The insole is attached to the outsole, and the insole and the outsole are integrally molded; the shoe sole is integrally molded in one mold, the attaching program is not needed, the number of working procedures is small, and the cost is low; the service life is long, the specific gravity is small, elasticity is good, the damping effect is excellent, and wearing comfort is high. The invention further provides a manufacturing mold of the integrally-molded shoe sole. The mold is provided with an outsole cavity and an insole cavity at the same time, one-time casting molding of the shoe sole can be achieved, the mold is simple in structure and reasonable in layout, the produced shoe sole is attractive and high in yield, and the invention further provides a production method of the integrally-molded shoe sole. Low-temperature molding is achieved, the flow process is simple, operation is convenient, time and labor are saved, and the shoe sole is environment-friendly and safe; color spraying operation is not needed, the shoe sole with the dual-color effect is formed, the working procedure is simple, and energy saving and emission reduction are achieved.

The invention discloses an insulation board made of composite materials and a preparation method thereof. The insulation board is made of the following raw materials in parts by weight: 8 to 10 parts of polyphenyl granule, 150 to 200 parts of cement, 20 to 30 parts of fly ash, 5 to 10 parts of sepiolite, 10 to 20 parts of fibrous brucite, 15 to 20 parts of adhesion agent, 0.6 to 1 part of anti-crack fiber, 1 to 2 parts of curing agent, 0.4 to 0.6 part of anti-sliding agent, 0.5 to 0.7 part of hydrophobic agent, 0.4 to 0.6 part of AES, and 100 to 120 parts of water; the preparation method comprises the following steps: proportionally putting the cement, fly ash, sepiolite, fibrous brucite, anti-crack fiber, anti-sliding agent and hydrophobic agent into a stirring machine, and stirring; adding adhesion agent, curing agent and AES into the stirring machine, and stirring; adding polyphenyl granule into the stirring machine so as to obtain thermal mortar; after hardening the thermal mortar, manufacturing the finish product of the insulation board made of the composite materials. The insulation board made of the composite materials, provided by the invention, has excellent heat preservation and heat insulation performance, excellent fireproof performance, high compressive strength and high tensile strength, and is light in weight.

The invention aims at solving defects such as low light oil yield, high foam layer, and high coke yield of prior arts, and discloses a delayed coking method. The method is characterized in that: a mixed raw material is heated in a heating furnace; the heated hot material flow enters a primary hydrocyclone, such that a gas phase (1) and a mixed liquid phase (1) are obtained; the gas phase (1) is quenched and is delivered into a fractionation column; high-temperature steam is injected into the mixed liquid phase (1), and the mixture is delivered into a secondary hydrocyclone; the secondary hydrocyclone separates the mixed liquid phase (1) into a gas phase (2) and a mixed liquid phase (2). The gas phase (2) is delivered into a fractionation column; high-temperature steam is injected into the mixed liquid phase (2), and the mixture is delivered into a coke column; coke is discharged from the bottom of the coke column, and reaction oil gas is delivered into the fractionation column.

The invention relates to a medical instrument, discloses an inlaid digital imaging system of a gynecological endoscope and belongs to the technical field of manufacture of accessories used for electronic digital endoscope medical image workstations of vagina and intrauterine integrated diagnosis and therapy of the gynecological departments. The inlaid digital imaging system of gynecological endoscope comprises an endoscope telescope body, an LED light source and a CCD (charge coupled device) miniature digital camera, the front end of the endoscope telescope body is connected with a transparent cover, the LED light source and the CCD miniature digital camera are respectively arranged in the transparent cover, a power module and a digital signal processing module are arranged in the endoscope telescope body, the power module is respectively connected with the LED light source and the CCD digital camera, the digital signal processing module is connected with the CCD miniature digital camera, a signal output port is arranged at the rear end of the endoscope telescope pipe body, and the signal output port is connected with the digital signal processing module. The inlaid digital imaging system of the gynecological endoscope can be used for examining vagina wall, cervix uteri or even intrauterine and is wide in observation vision field.

The invention discloses a method for breeding a color wheat variety and belongs to the technical field of special wheat breeding. According to the method, a white-grain wheat variety with high yield and high quality is selected to serve as a recurrent parent and hybridized with black-grain wheat, purple-grain wheat and green-grain wheat, progeny and the recurrent parent are subjected to multi-generation backcross, a wheat near-isogenic line is bred and mixed with the white-grain wheat recurrent parent in certain ratio, and a color wheat production variety is generated, wherein for the wheat near-isogenic line, plant and leaf types, agronomic characters and yield traits of the wheat near-isogenic line are close to those of the recurrent parent, and the wheat near-isogenic line has characters of the black grains, purple grains and green grains. After the color wheat variety is planted, the plant and leaf types and the agronomic characters are neat and the same, the yield is high, and harvested wheat contains white-grain wheat, black-grain wheat, purple-grain wheat and green-grain wheat, integrates color, aroma, taste and nutrition efficacy and has very good nutrition and health care functions.

The invention discloses a whole-span prefabricated H-steel-concrete composite beam bridge and a construction method. The whole-span prefabricated H-steel-concrete composite beam bridge comprises an H-steel combination and a concrete bridge plate which is poured on the H-steel combination; the H-steel combination comprises H-steels placed in parallel in the bridge width direction; and the whole-span length is the length direction of the H-steels. The whole-span prefabricated H-steel-concrete composite beam bridge has the advantages that the construction of a bridge deck slab is simple and the hoisting weight of the bridge deck slab is light; during making, factory machining and manufacturing procedure does not exist and the later mounting and erecting difficulty is reduced; and meanwhile, as the H-steels can avoid adverse effects such as welding residual stress, more stable mechanical property, better bearing capacity and better durability are obtained; and the making cost can be greatly reduced. Compared with the steel plate girder in the prior art, the whole-span prefabricated H-steel-concrete composite beam bridge has the advantages that the welding or bolting process can be eliminated; construction processes uneasy to control, such as prestressed structure steel strand tensioning and grouting, hollow slab girder hinge joint connection and so on do not exist; the quality of aprofiled-steel composite beam can be effectively guaranteed; and requirements on equipment and technical skills of workers can be reduced.

The invention relates to a preparation method of o-chloro-p-nitroaniline, which takes p-nitroaniline as a raw material, and prepares the o-chloro-p-nitroaniline by directly inputting chlorine gas for implementing the chlorination reaction in a diluted hydrochloric acid medium with a temperature of between -20 and 10 DEG C, wherein, the p-nitroaniline and the input chlorine gas are present in a molar ratio of 1:1-1.1. The preparation method can prepare the o-chloro-p-nitroaniline with best quality, and has advantages of simple process, high yield, low production cost and non wastewater discharge.

The invention discloses a magnetic field-induced preparation method of a molecularly-imprinted magnetic enrichment material of trace quantity of chlorophenol pollutant molecules in seawater. The preparation method comprises that under magnetic field induction, an epoxy group-functionalized magnetic polymer is prepared by suspension polymerization and in-situ oxidation, a chlorophenol environmental pollutant polyamine template molecule is obtained by an intermolecular hydrogen bonding self-assembling technology, an amino-functionalized magnetic molecularly-imprinted composite material bonding with the template molecule is prepared under magnetic field induction, and in the presence of an acid/alcohol extractant, through pH adjustment, the template molecule is eluted and the chlorophenol molecule-imprinted magnetic composite material is obtained. The preparation method has simple processes and a low cost and realizes uniform particle size distribution and stable properties of the desired product. The molecularly-imprinted magnetic enrichment material can realize high-efficiency and high-selectivity adsorption and removal of trace quantity of chlorophenol pollutants in seawater and can be used for base dispersion-magnetic solid phase extraction detection of trace quantity of chlorophenol pollutants in seawater.

The invention relates to an external wall insulation and decoration integrated plate with sand grain decoration for outer wall surface and a production line of the external wall insulation and decoration integrated plate. The plate comprises a middle heat-insulating layer, a rectangular frame and a coagulation layer, wherein the rectangular frame wraps the periphery of the middle heat-insulating layer and is formed by inner and outer layers of fiberglass meshes; the coagulation layer of cement slurry and fiberglass short shred is filled inside and outside the frame; the joint faces of the middle heat-insulating layer and the upper-layer inner surface of the coagulation layer as well as the middle heat-insulating layer and the lower-layer inner surface of the coagulation layer are in convex-concave connection; and sand grain is arranged at the upper-layer outer surface layer of the coagulation layer. The invention also provides the production line of the plate. The plate and the production line of the plate, provided by the invention, have the advantages that: (1) an heat-insulating board is arranged between the coagulation layer of the cement slurry and the fiberglass short shred, the plate can be completed in a precast plant, and exposed heat-insulating materials no longer exist in construction site to ensure that safety production is guaranteed, and potential safety hazard does not exist; and (2) external wall insulation and decoration surface layers are simultaneously completed to ensure that the working procedure and the working time are saved, the construction period and the engineering quantity are decreased, a qualitative leap is realized, and a remarkable economic benefits are obtained.

The invention discloses an aqueous two-component safety airbag cover decoration elastic hand feeling coating material and a preparation method thereof, and a coating formed by the elastic hand feelingcoating material, wherein the raw materials comprise: an aliphatic hydroxyl functional polyester type polyurethane dispersion body, an aliphatic anionic polyurethane dispersion body, an anionic polycarbonate polyurethane dispersion body, an organic silicon defoamer, an alkynediol molecular defoamer, a polyether modified siloxane wetting leveling agent, deionized water, a wetting dispersant, extinction powder and an ultra-high molecular weight polydimethylsiloxane dispersion body hand feeling agent. Acording to the invention, the prepared coating material is an aqueous coating material, has characteristics of low VOC, environment friendliness, excellent adhesive force, good water resistance, good moisture resistance, good gasoline resistance, good acid/alkali resistance, good car wax resistance and good moisturizing-cream resistance, and can be directly sprayed on safety airbag cover decoration member base materials without primer coating; and the coating formed by the coating materialhas characteristics of strong adhesion, good hand feeling and the like.

The invention discloses nanometer composite dry powder marble wall lacquer used for decorating building external wall, which consists of the materials with the following weight percentage: 30 to 45 percent of white cement; 25 to 50 percent of mountain meal; 8 to 25 percent of ground chalk; 8 to 30 percent of color sand; 5 to 10 percent of multi-color rock slices; 3 to 8 percent of dispersible powdered emulsion polymer; 0.3 to 0.6 percent of cellulose ether, 0.2 to 0.5 percent of dry powder defoamer, 0.5 to 1.5 percent of dry powder pigment, and 1 to 3 percent of nanomaterial. The nanometer composite dry powder marble wall lacquer disclosed by the invention has the advantages of good durability, innocuity, tastelessness, no pollution, environmental protection, variety of colors, high decorativeness, fire prevention, waterproofness, pollution-proofness, wearability, durability, no crack, nonscale, economy, practicality and so on.

The invention relates to a support for connecting an inner upper surface with an inner lower surface of an oil tank. The support comprises at least one connection column. An end face is arranged on each of the upper side and the lower side of each connection column, and is coated with plastic. A notch is formed in each connection column. The connection columns can be in the shape of I, H, M or W or in other shapes. The support has the advantages that the strength can be guaranteed, and the support can be broken easily during collision, so that surface tearing and leakage of the oil tank are avoided, and safety of the oil tank is guaranteed.

The invention relates to UV (ultraviolet) coating, particularly colored UV coating. The colored UV coating is characterized by comprising the following components by weight ratio: 22-27% of methyl-polyhydroxy-acrylate oligomer, 20-22% of acetate-epoxy acrylate oligomer, 15-19% of activated methyl polyurethane resin, 8-10% of reactive diluent, 10-12% of ethylene glycol dimethyl ester, 7-8% of coupled tri-n-butyl-dipropyl phthalate, 0.8-2.5% of photoinitiator, 0.5-1.5% of flatting agent, 3-5% of inorganic deep-curing initiator, 1.5-3.5% of adhesive and 2.-5% of pigment. According to the invention, the limitation of the traditional UV that an expectant using effect can be achieved only by spraying primer and UV gloss oil finish paint in sequence is broken through, the pigment is added into the gloss oil, and the color and performance of the traditional UV can be achieved by one-time spraying.

The invention provides an image shooting device in panorama mode, comprising a fixed base, two or more lens modules and a control circuit. The fixed base is provided with two or more windows, each of which corresponds to different visual angles; the lens module is mounted inside the fixed base and formed by an image shooting unit and a circuit board; the circuit board converts images shot by the image shooting unit into electric signals and outputs the electric signals; the control circuit is configured inside the fixed base and electrically connected with the lens module for connecting images shot by two or more lens modules in series so as to form pictures in the panorama mode. The invention also provides another image shooting device in the panorama mode, which is provided with a reflection component and a focus component inside the fixed base.

The invention relates to the technical field of wellhead devices, in particular to a multi-seat type fast-assembly wellhead device. A valve on a Christmas tree or a gas production tree can be quickly replaced. The device comprises a valve switching clamping mechanism, a rotating motor drives a rotating gear to rotate, the rotating gear drives an annular rack to drive a rotating shaft to rotate on a base, rotation of a forked flat plate is achieved, and the forked flat plate drives a plurality of clamping cross beams to conduct circular motion with the rotating shaft as the circle center. Different valves can reach the Christmas tree or the gas production tree, and meanwhile two arc-shaped clamping arms can be used for clamping the detached valves and driving the detached valves to leave the Christmas tree or the gas production tree in the rotating process. A worker does not need to stoop to place the detached valves on the ground or lift up new valves to place on the Christmas tree or the gas production tree, so that the physical strength of the worker is saved, and the time and process for replacing the valves are saved.

The invention provides a method for preparing eight-treasure granules. The method comprises the following steps: eight medical materials such as radix codonopsis and bighead atractylodes rhizomes are prepared into Chinese herbal pieces as requested; the angelica sinensis, the ligusticum wallichii and the roasted bighead atractylodes rhizomes are extracted through ethanol reflux after being mixed and ethanol is recovered; the dregs of the decoctions of the angelica sinensis, the ligusticum wallichii and the roasted bighead atrac tylodes rhizome are added with water and then are decocted, wherein the dregs are continuously extracted through the ethanol at a low temperature; the remaining five Chinese herbal pieces such as the radix codonopsis, the Indian buead, the prepared rehmannia roots and the honey-fried licorice roots are added with water and then are decocted; the extracted solutions are mixed and then are concentrated into extractum with a hot test density of 1.08 to 1.20; the extractum is added with ethanol for ethanol precipitation and stilly placed; the supernatant are taken away, the ethanol is recovered, then the solution is concentrated into extractum with a hot test density 1.35-1.38; the extractum is added with auxiliary materials to be made into sugary granules and sugarless granules. According to the method, drug effective ingredients are reserved to the maximum extent; the quantity of the extractum extracted from the eight treasures are remarkably reduced; the problems that in the actual production process, prepared agents are difficult to form and the original technology is susceptible to moisture absorption and caking are solved, so that the method is suitable for industrial production and enables the quality of the drug more stable.

The invention provides a valve fixing device. The valve fixing device comprises a valve with a mounting hole and a valve mounting plate, a bolt with a head and a threaded rod, and a nut; the valve fixing device is characterized in that the threaded rod orderly penetrates through the valve and the valve mounting plate to be in threaded connection with the nut, a damping rubber ring sleeving the threaded rod is arranged between the threaded rod and the valve mounting plate, and comprises a rubber ring body and a clamping part, and an engagement part matched with the clamping part is arranged on the nut. As the damping rubber ring is matched with the nut, the mounting steps are reduced, the mounting procedure is optimized and the mounting efficiency is improved.

The invention discloses a preparation method of a liquid-state nano disperse dye modified by graphene and graphene derivatives. A disperse dye filter cake and the graphene or the graphene derivativesare mixed, wherein the graphene derivatives comprise a graphene oxide and a reduced graphene oxide; the mixture is ground to obtain the liquid-state nano disperse dye modified by the graphene and thegraphene derivatives. A high-temperature high-pressure one-bath dyeing method is adopted for dyeing a terylene fabric, and reduction of the graphene oxide can be achieved in the reduction cleaning process. The fabric is endowed with the color performance by the disperse dye and endowed with the functionality by the reduced graphene oxide, dyeing and finishing are completed through a one-step method, the fabric is endowed with the colors and functionality, the after-treatment technology is omitted, the reduction time of the reduced graphene oxide is shortened, and the liquid-state nano dispersedye has great application potential in the field of textiles.

The invention relates to a shaping and punching device. The shaping and punching device comprises a control unit I and a working unit II, wherein the working unit comprises a mold core device, a longitudinal positioning mechanism, a clamping and shaping mechanism and a punching mechanism, the mold core device, the longitudinal positioning mechanism, the clamping and shaping mechanism and the punching mechanism are installed on a workbench, the mold core device is used for providing a mold core corresponding to an opening of a steering knuckle bracket so as to be convenient for shaping and punching, the longitudinal positioning mechanism is used for tightly propping an oil storage cylinder assembly and determining the front and back position of the steering knuckle bracket, the clamping and shaping mechanism is used for clamping the oil storage cylinder assembly, determining the punching position of the steering knuckle bracket and shaping the steering knuckle bracket, and the punching mechanism is used for accurately punching a mounting hole in the steering knuckle bracket; and the positioning, clamping, shaping and punching of a workpiece are completed under the control of the control unit according to set procedures. A method for shaping and punching the oil storage cylinder steering knuckle bracket comprises the steps of (1) assembling the shaping and punching device, (2) pressing and shaping, and (3) punching. The device has the advantages of scientific design, compact structure and convenience in assembly and disassembly, and the use method has the advantages of simplicity and convenience in operation, high punching precision and good product quality.