152results about How to "Efficient production" patented technology

The invention provides a genetically engineered bacterium for producing polydeoxyribonucleotide as well as a construction method and application of the genetically engineered bacterium. The genetically engineered bacterium comprises kluyveromyces marxianus for expressing a salmon DNA polymerase I gene. According to the invention, the edible probiotic Kluyveromyces marxianus is transformed through genetic engineering, efficient, safe and controllable production of PDRN is realized, the biological activity of PDRN is equivalent to that of PDRN from a natural source, and large-scale production and application of PDRN are facilitated.

The invention belongs to the technical field of metallurgy, and particularly relates to a long-casting-time production method of food-grade tinplate. The tinplate comprises the following chemical components in percentage by mass: 0.040%-0.060% of C, less than or equal to 0.020% of Si, 0.20%-0.30% of Mn, less than or equal to 0.015% of P, less than or equal to 0.0080% of S, 0.025%-0.040% of Al, less than or equal to 0.060% of Cr, less than or equal to 0.060% of Cu, less than or equal to 0.060% of Ni, less than or equal to 0.010% of Nb, less than or equal to 0.010% of V, less than or equal to 0.010% of Ti, less than or equal to 0.0030% of B and the balance of iron and inevitable impurities. The production method comprises the steps of converter smelting, LF furnace refining, RH furnace net circulation and continuous casting protective pouring. On the basis of ensuring the cleanliness of the molten steel, the casting times are increased to more than 30, the production efficiency is high, and the product quality is good.

This invention discloses a method for preparing a large round billet for continuous casting of forged cold-rolled roll sleeves, comprising: controlling the composition system, wherein the chemical composition of the raw material steel is: C: 0.65-0.75%, Si: 0.25-0.40%, Mn: 0.35-0.50%, P≤0.020%, S≤0.020%, Cr: 1.90-2.10%, Ni: 0.30-0.45%, Mo: 0.20-0.40%, V: 0.05-0.10%; and controlling the continuous casting process parameters, wherein the superheat is controlled within a certain range. The casting temperature is maintained between 15 and 35°C, the casting speed is kept stable at 0.24 ± 0.01 m / min, the crystallizer water flow is controlled at 3700 L / min, and the secondary cooling water flow in the crystallizer is controlled at 0.12 L / Kg. During continuous casting, a 200 A / 2.5 HZ electromagnetic stirring of the casting flow and a 500 A / 1.2 HZ strong end electromagnetic stirring are used. The heat treatment process parameters for the continuously cast round billets are controlled as follows: red-charging annealing of the continuously cast round billets, furnace charging temperature ≥ 400°C, heating rate ≤ 100°C / h, holding at 730°C for ≥ 15 h, furnace cooling to 400°C, and air cooling upon exiting the furnace. This invention ensures the hardness and wear resistance of the cold-rolled roll sleeves while improving toughness and machinability, avoiding surface cracking and internal cracking of the roll sleeves during the casting and forging processes, ultimately achieving high-efficiency production and long service life of the roll sleeves.

A parallel continuous rapid emulsion preparation device includes a pure water tank connected to a pure water main pipe via a water pump. The pure water main pipe is connected to the inlet pipes of an aqueous phase reactor, an oil phase reactor, and a dilution reactor via a first, second, and third pure water branch pipe, respectively. A glycerol tank is connected to the oil inlet pipes of the oil phase reactor and the dilution reactor via a gear pump, a glycerol main pipe, a first glycerol branch pipe, and a second glycerol branch pipe, respectively. The discharge pipe at the bottom of the aqueous phase reactor is connected to the inlet of the oil phase reactor via a first feed pump. The discharge pipe at the bottom of the oil phase reactor is connected to the inlet of the dilution reactor via a second feed pump. The discharge pipe at the bottom of the dilution reactor is connected to a storage tank. Heating structures are provided on the side walls of the aqueous phase reactor and the oil phase reactor. Vacuum pipes are provided on the top of both the oil phase reactor and the dilution reactor, and these vacuum pipes are connected to a vacuum pump.

This invention provides a method for controlling the weight of a solid tire carcass and its application, relating to the field of tire carcass technology. The method includes the following steps: (a) weighing the base rubber after molding and comparing it to the standard weight of the base rubber to obtain a weight difference value; (b) correcting the amount of intermediate rubber based on the weight difference value from step (a), weighing the tire carcass after molding the intermediate rubber, and comparing it to the standard weight of the intermediate rubber tire carcass to obtain a weight difference value; (c) correcting the amount of tread rubber used in one stage based on the weight difference value from step (b), weighing the tire carcass after molding the first stage of tread rubber, and comparing it to the standard weight of the first stage of tread rubber tire carcass to obtain a weight difference value; (d) correcting the amount of tread rubber used in the second stage based on the weight difference value from step (c), and molding the tread rubber in two stages to obtain the finished tire carcass. This invention, through segmented weighing and multi-stage correction, gradually offsets the weight errors in each molding stage, achieving a tire carcass weight error of ±0.1 kg, far superior to existing weight control precision.

The present application relates to the fields of gene therapy and molecular biology. More specifically, the present invention relates to a method for producing a modified adeno-associated virus (AAV) capsid and to a modified AAV capsid produced by said method, as well as to an isolated nucleic acid encoding said modified capsid and a vector based on recombinant adeno-associated virus for delivering a heterologous nucleic acid sequence to a subject, which includes said modified capsid.

The invention discloses a functional fabric preparation method and finishing equipment for realizing fabric functionalization, and relates to the technical field of textile fabric functionalization and finishing equipment. According to the preparation method of the functional fabric, the functional finishing agent and fabric fibers can be triggered to be subjected to chemical grafting reaction through ultraviolet irradiation and / or heating, and the textile fabric is subjected to one-time continuous multifunctional finishing; the finishing equipment comprises two functional modules, an ultraviolet light initiation module and a thermal initiation module, can support different finishing processes of fabrics, realizes chemical covalent bond grafting reactions of different principles, has strong production operability and high flexibility, and has ideal popularization and application values in the fields of textile fabric finishing and engineering.

The invention discloses a battery fiber of an ultraviolet curing electrolyte as well as a preparation method and application of the battery fiber. The battery fiber comprises an electrode fiber core, a gel electrolyte layer and a polymer encapsulation layer from inside to outside. The electrode fiber core is formed by twisting and compounding a positive electrode fiber and a negative electrode fiber; the gel electrolyte layer is formed by curing a precursor containing a photocuring monomer, a photoinitiator, a linear polymer and a lithium salt through ultraviolet irradiation. According to the preparation method, a stable gel electrolyte layer is rapidly constructed on the surface of the fiber at normal temperature through an ultraviolet curing technology, so that the potential safety hazard that a traditional liquid electrolyte is easy to leak is solved, an electrode-electrolyte interface is also remarkably optimized, and the interface impedance is reduced. The obtained battery fiber has excellent flexibility, high safety and good electrochemical performance, the slender one-dimensional form of the battery fiber can be directly woven into an intelligent fabric through a textile technology, and an ideal flexible embedded power supply solution is provided for wearable electronic equipment.

The invention discloses a food processing method and a food processor, and belongs to the technical field of food processors. The food processing method comprises the following steps: S1, collecting food processing data, including collecting mixing state data in a food processing and mixing process and operation data of a food processor; s2, preprocessing food processing data to obtain a training data set; s3, a food processing model is established based on the training data set by using a recurrent neural network, the input of the food processing model is processed food processing data, and the output is a prediction result of a mixed state; s4, inputting food processing data collected in real time into the food processing model for predicting a food mixing state at a future moment; and S5, adjusting operation parameters of the food processor according to a prediction result of the food processing model so as to realize optimization and efficiency improvement of the mixing process.

The invention relates to a stamping device with deburring and stacking functions, and belongs to the technical field of stamping devices. Comprising a base, a feeding mechanism is arranged on the side edge of the base, a stamping machine body is installed on the base, a stamping mechanism for stamping and cutting coil stock on the feeding mechanism is installed on the stamping machine body, and a conveying mechanism is arranged on the bottom side of the stamping mechanism and used for conveying stamped sheets to a stacking mechanism; the stamping machine body comprises a movable mold plate, a fixed mold plate and a connecting rod, the stamping mechanism comprises an upper pressing mold and a lower pressing mold, the feeding mechanism comprises a feeding support and a material collecting support, the conveying mechanism comprises a first conveying belt, a grinding wheel assembly and a second conveying belt, the stacking mechanism comprises an inner ring component, a first telescopic motor, an arc-shaped plate and a lifting head, and a discharging mechanism is further arranged. According to the stamping piece stacking device, the stamping pieces are subjected to stamping piece cutting, deburring, stacking, discharging and other operations, the stamping pieces stacked in a staggered mode can be effectively smoothed, and the technical effects of efficient machining and orderly stacking of the stamping pieces are achieved.

The utility model relates to the field of ceramic tile manufacturing equipment, and discloses a continuous edge scraping machine which comprises a green brick conveying line and an edge scraping mechanism arranged in the middle of the green brick conveying line. The edge scraping mechanism comprises a first rack, a scraper assembly arranged on the top of the first rack and a scraper driving mechanism used for driving the scraper assembly to move left and right in a reciprocating mode. Under the horizontal projection, the moving route of the scraper assembly and the moving route of the green brick obliquely intersect to form an acute angle, and the scraper assembly is used for scraping the front end face of the green brick. According to the continuous edge scraping machine, the limitation of a traditional edge scraping machine is broken through, the edge scraping mechanism is ingeniously and obliquely arranged, the green brick conveying speed and the edge scraping speed are dynamically adjusted, under the condition that a green brick conveying line is not stopped, edge scraping operation is synchronously achieved, time loss caused by frequent starting and stopping of the conveying line is completely eradicated, the productivity is greatly improved, and the production cost is reduced. And high-efficiency production is realized.

The application discloses a kind of high furnace cloth chute inclination and material line compensation method, comprising: selecting a cloth inclination as reference inclination, and obtaining its corresponding reference material line height;Actual material line height of current high furnace is obtained, and the height difference with reference line is calculated;Material flow trajectory is divided into N continuous compensation intervals according to height difference;Pre-calculate the endpoint compensation value of each compensation interval, and the endpoint compensation value is the angle compensation amount that reference inclination needs to adjust at current material line height to keep the radial position of cloth drop point unchanged relative to reference material line;Determine the compensation interval where actual material line height difference is located, and the actual compensation angle corresponding to actual material line height difference is calculated using linear interpolation according to the upper and lower endpoint compensation value of the interval;Actual compensation angle is applied to reference inclination, and the cloth inclination that should be executed at current actual material line height is obtained.The application realizes the accurate compensation of chute inclination angle to material line height difference.

The utility model relates to the technical field of cutting devices, and discloses an efficient cutting device for PS profile production, which comprises a device shell, a first motor and a feeding mechanism, the feeding mechanism for conveying PS profiles is arranged in the device shell, the first motor is fixedly connected to the back of the device shell, and the second motor is fixedly connected to the back of the device shell. A first rotating rod is fixedly connected to the output end of the first motor, the sliding block is slidably connected to the interior of the fixing shell, a fixing buckle is fixedly connected to the exterior of the sliding block, a clamping block for clamping the PS plate is arranged on the outer side of the fixing shell, and a second rotating rod is rotatably connected between the clamping block and the fixing buckle; and a third rotating rod is rotationally connected between the clamping block and the fixing buckle. When the cutting device is used for cutting, a plate is clamped by the clamping blocks, so that the stability of the plate in the cutting process is ensured, and the tilting or displacement of the plate caused by the action of cutting force is prevented, therefore, the cutting precision and stability are greatly improved, the product quality is ensured, and the production of PS profiles is more efficient and reliable.

The present application relates to a kind of high-efficiency environmental protection machine-made fine sand production method and its application, the method includes the following steps: (1) feed screening;(2) one-stage screen washing;(3) coarse crushing, medium crushing and screening;(4) two-stage sand washing;(5) fine crushing closed-circuit screening;(6) wet rod grinding sand and dehydration;(7) crushing, shaping and classification;(8) slurry dewatering.The present application adopts dry-wet combined sand making process, and the sand making rate is higher, the quality indexes such as mud content, moisture content, grading, stone powder content of finished sand can be better controlled in sand making process, the quality of finished machine-made fine sand is guaranteed, has the advantages of small one-time investment, low operation and management cost, coarse aggregate surface is clean, fine aggregate stone powder loss is less, etc., while dust pollution caused by dry sand making can be effectively reduced, stone powder and waste water can be recycled, the whole machine-made fine sand production is efficient and clean, and has strong popularization and application value.

This invention discloses a three-proof combined pump, its usage method, and a dedicated dosing device, including a drainage device and a dosing device, with the dosing device located below the drainage device. The drainage device has a two-stage sand settling cylinder on its exterior. The lower end of the drainage device is also connected to a drainage cylinder. The dosing device is entirely located inside the drainage cylinder, and the inner wall of the drainage cylinder and the exterior of the dosing device form a drainage channel, i.e., the lower port of the drainage device communicates with the drainage channel. The drainage device uses its internal plunger to power the dosing pump of the dosing device; that is, the upper end of the piston rod of the dosing device corresponds to the internal plunger of the drainage device. This invention not only solves the pump blockage and jamming problems caused by sand (coal powder) production, but also addresses the corrosion and scale prevention problems of high gas-oil ratio wells or coalbed methane production wells, thereby achieving high-efficiency production.

This invention focuses on the application of a PtZn / Al2O3 bimetallic catalyst in the propane dehydrogenation reaction. A uniquely structured mixed oxide support was synthesized through a co-precipitation strategy incorporating an appropriate amount of silicon (Si), and metallic Pt was loaded using an equal-volume impregnation method. Benefiting from the uniform dispersion of Zn, Pt is atomically dispersed on the surface of Zn nanoclusters, improving metal utilization and catalytic efficiency. The introduction of Si significantly optimizes the metal-support interaction, greatly enhancing the catalyst's activity and stability. With catalyst particles of 20-40 mesh, it exhibits excellent catalytic performance, along with good high-temperature stability and resistance to carbon deposition. This preparation process is simple, reproducible, and achieves efficient and highly selective propylene production with low amounts of precious metals, demonstrating promising industrial application prospects.

The utility model provides a kind of flybar hook component special for packaging substrate, and "7" shape is constituted by connecting hook and fixed base plate through vertical connecting rod, hook is composed of first vertical section, second vertical section and horizontal connecting section, and first vertical section connects vertical rod.Flybar fixing assembly of hook contains first screwing screw, threaded hole and spring piece.Fixed base plate contains base plate ontology, at least one second screwing screw and threaded hole, can firmly fix backlight sheet, solve the problems of inconvenient operation, position inflexibility and poor monitoring of existing flybar hook component special for packaging substrate.Its detachable structure makes backlight sheet installation and disassembly convenient, improves efficiency.Precise fixing backlight sheet in flybar middle, simulates actual environment, monitoring is more real, it is convenient to find problem, improves product quality and consistency.In addition, the hook can also fix various production materials, has universality, reduces production cost, reduces interruption and quality problem, improves the stability and reliability of VPTH production line.

The application relates to the technical field of track beams, and provides a formwork system and a beam body production system. The formwork system comprises a moving base provided with a first track; fixed bases arranged on the two sides of the moving base, the fixed bases being provided with second tracks; a bottom die fixed on the moving base, the first tracks being arranged on the two sides of the bottom die; side dies capable of moving from one of the first tracks and the second tracks to the other, when the side dies move to the first tracks, the side dies and the bottom die surround to form cavities for pouring beam bodies. The formwork system provided by the application can effectively solve the problem of excessive number of formworks required for beam body production in the prior art, greatly reduces the number of formworks on the production line, and reduces the production and manufacturing cost of the track beam.

The utility model discloses a kind of clean vegetable processing cutting device, it is related to clean vegetable processing technical field, including conveyer belt, conveying table, the conveyer belt one end is provided with conveying table, each corner at conveyer belt and conveying table bottom is uniformly fixedly connected with support leg, conveying table upper end surface is rotatably connected with threaded rod and threaded rod outer wall is threadedly connected with threaded sleeve, threaded sleeve upper end surface is fixedly connected with the vegetable feeding plate, conveying table left and right two ends are fixedly connected with extension plate, extension plate upper end surface is fixedly connected with support rod, fixedly connected with main plate between two groups of support rods, main plate upper end surface is provided with pressing mechanism and cutting mechanism, by the coordinated work of cam, reciprocating plate, sliding sleeve and the like structure, the automatic cutting of vegetable is realized, and reset is completed after each cutting, ensure the continuous operation and efficient production of equipment, after cutting, automatic trigger is achieved by the operation of plate, and the design of slanting end of plate can more effectively successfully push the cut vegetable into conveyer belt.

The invention relates to the technical field of microorganisms, in particular to recombinant genetically engineered bacteria of yarrowia lipolytica as well as a construction method and application of the recombinant genetically engineered bacteria. The succinic acid production performance of the recombinant genetically engineered bacterium of yarrowia lipolytica is remarkably improved, high succinic acid yield and production intensity are achieved, the recombinant genetically engineered bacterium can be applied to stable and efficient production of succinic acid, the performance of the recombinant genetically engineered bacterium is stable, and the recombinant genetically engineered bacterium can be suitable for large-scale industrial production of succinic acid.

The application discloses a glass raw material homogenizer for a V-belt conveyor, the upper belt surface of the V-belt conveyor is provided with the homogenizer, the homogenizer comprises a distribution plate, a collecting bin and a stirring mechanism, the distribution plate is vertically arranged on the upper belt surface of the V-belt conveyor, the distribution plate separates the material on the upper belt surface of the V-belt conveyor on both sides, the collecting bin is installed on both sides of the distribution plate, the lower surfaces of the distribution plate and the collecting bin are close to the upper belt surface of the V-belt conveyor, the stirring mechanism is installed on the distribution plate and located between the two collecting bins, and a plurality of stirring heads of the stirring mechanism are one-to-one corresponding with a plurality of discharge ports of the collecting bin. The homogenizer is directly installed on the V-belt conveyor, on-line mixing of the prepared glass raw material is realized, the uniformity of the raw material is improved, and the melting and clarifying effects of the raw material after entering a kiln are improved; the use of a mixer for mixing the raw material is avoided, the conveying work of the raw material is not interrupted, and continuous conveying and efficient production of the glass raw material are ensured.

The utility model discloses a front and rear mould inner sliding block two -color mould structure relates to two -color mould's technical field, it includes a front mould, two front moulds and two rear moulds, adopts the two -color mould of front and rear mould inner sliding block structure, through the rotation switching of two rear moulds, can complete twice injection on the same injection molding machine continuously, has reduced the transfer time of product between different equipment or mould, has realized the efficient production of two -color product, moreover, the telescopic of slider drive assembly automatic drive slider with the opening and closing mould action of mould, need not additional operation step, has further improved the automation degree and efficiency of production.

The utility model relates to the field of film processing, concretely relates to a kind of anti-wrinkle device in film processing winding, including main body frame, the middle place of main body frame bottom is provided with roll material cylinder, the side of roll material cylinder is provided with motor assembly, the side of the top of main body frame is provided with height limiting roller, the other side of the top of main body frame is provided with transmission roller, the middle place of the top of main body frame is provided with main roller shaft, the top of main roller shaft, height limiting roller, transmission roller is paved with film roll material, the bottom of the side main roller shaft in the middle place of main body frame is provided with second auxiliary roller shaft, the side of the front of main body frame close to the bottom of first auxiliary roller shaft is provided with additional frame, the utility model utilizes the structure cooperation of main roller shaft, auxiliary roller shaft, and the reciprocating action of heterogender grid, constructs multistage anti-wrinkle mechanism, from reference tension guarantee, to the tension and speed dynamic adjustment of multiple nodes, all-around intervention wrinkle generation.

The utility model provides a kind of spinneret, belong to textile machinery technical field.Its structure includes: a plurality of shunt cone is arranged to form array in the upper end of spinneret body, the shape of the array is regular hexagon, there are a plurality of spinneret hole in the periphery of each shunt cone;Every two adjacent shunt cone is arranged at equal intervals;Every two adjacent spinneret hole is arranged at equal intervals.The utility model is designed with new structure, can optimize the spinning process of fiber, improve the dispersion uniformity and surface quality of fiber.Through the structure design and material selection of spinneret, realize efficient, stable fiber production.The spinneret includes spinneret body and multiple spinneret holes arranged on the spinneret body.The shape, size and arrangement of spinneret hole are carefully designed to achieve uniform dispersion of fiber.At the same time, spinneret body is made of high-temperature-resistant and wear-resistant material to ensure stability in high temperature and high pressure environment.

This application relates to the field of temperature control equipment technology, specifically a coolant flow regulation and leak prevention device for semiconductor temperature control equipment. The device utilizes a liquid pump in a coolant regulation component to circulate coolant in cooling pipes, which connect the coolant regulation component and the semiconductor manufacturing equipment. Several sets of cooling pipes are equipped with flow meters and flow regulation devices, and the cooling pipes run through the semiconductor manufacturing equipment. The coolant regulation component includes a liquid pump and a variable frequency refrigeration compressor, both connected to a main controller. The leak prevention component includes several sets of leakage sensors corresponding to the cooling pipes and a first solenoid valve located on the cooling pipe at the inlet of the semiconductor manufacturing equipment. Each leakage sensor is externally connected to an alarm and a user controller, which is signal-connected to the main controller. This application enables real-time monitoring of the fluid state in the cooling pipes, ensuring the stability and reliability of the liquid supply during semiconductor manufacturing, thereby improving manufacturing efficiency and product quality.

The present application relates to a kind of high-precision feeding and head tail automatic processing method, the efficient cooperation of position sensor and encoder is realized to the real-time monitoring and accurate control of feeding process by this method, i.e., the method can automatically detect the tail position of bar, accurately calculate the remaining length, and accurately control the lifting and pressing of the upper wheel of the feeding wheel group at the critical moment, ensure the seamless connection and stable clamping between new and old material rods, this innovation not only greatly improves the consistency and reliability of product, but also significantly reduces the error that may be introduced due to manual operation, effectively reduces the labor intensity and overall production cost.In addition, the optimized waste treatment process further enhances the economy, brings significant benefits to the material cutting and forming process in modern manufacturing, making the entire production process more efficient, environmentally friendly and economical.

The present application relates to the field of microorganism, discloses a kind of fusarium fujikuroi, the fungicide containing the bacteria and their application and the method for producing gibberellin.The preservation number of the fusarium fujikuroi is CCTCC NO:M 20221848.The present application further provides the application of the fusarium fujikuroi in producing gibberellin.The method for producing gibberellin includes the following steps: the fusarium fujikuroi and / or the fungicide is inoculated into seed culture medium to carry out seed culture and obtain seed liquid;The seed liquid is inoculated into fermentation culture medium to carry out fermentation culture.The fusarium fujikuroi provided by the present application can resist gamma ray irradiation, has good environmental adaptability and gibberellin production potential, and is suitable for industrial production.

The utility model discloses a counter convenient for automatic assembly, which relates to the technical field of counters and comprises a main body structure and a counter shell, a head wheel is arranged on one side of an inner cavity of the counter shell, a first carry wheel is arranged on one side of the head wheel, a number wheel is arranged on the other side of the inner cavity of the counter shell, and a second carry wheel is arranged on the other side of the inner cavity of the counter shell. A second carry wheel is arranged between every two adjacent number wheels; the outer convex edge of the assembly component is convenient for the four-axis robot to grab the shell, so that quick positioning and transferring are realized; through cooperation of a first mounting hole, a second mounting hole, a first counter shaft, a second counter shaft, a first guide boss and a second guide boss, wheel body mounting standardization is achieved, the assembling efficiency is improved, through clamping connection of a first anti-disengaging rotating shaft and a second anti-disengaging rotating shaft with a shaft sleeve, a four-axis robot can be rapidly mounted, the stability is guaranteed, the labor cost is reduced, the mounting time is shortened, and the working efficiency is improved. The market high-efficiency production requirement is met, and the enterprise competitiveness is enhanced.

This invention belongs to the field of lithium-ion production technology, and specifically relates to a high-efficiency and energy-saving mixing system for petroleum coke and pitch used in the production of aluminum electrolytic anode carbon blocks. The system includes a working plate with a material discharge hole at its top, and two rotating support seats symmetrically fixed to the top of the working plate. A large mixing cylinder is rotatably mounted on each of the two rotating support seats, with a discharge pipe connected to its outer side. The large mixing cylinder has an elliptical hollow structure, wider in the middle and narrower at both ends, used to accommodate and mix petroleum coke and pitch raw materials. Two annular support members are fixedly installed on the outer sides of both ends of the large mixing cylinder, and these two annular support members rotatably engage with the two rotating support seats. This invention achieves bidirectional reverse mixing, dual-mode heating for energy saving, precise temperature control and insulation, leak-proof sealing, and high-efficiency production, improving the quality and efficiency of anode carbon block production while reducing energy consumption.

The utility model discloses a kind of defect positioning device of non-woven fabric, belong to non-woven fabric production equipment technical field, the device includes the defect detection positioning assembly on non-woven fabric slitting and picking waste equipment, it contains color difference sensor densely arranged in cloth surface width, back light plate on equipment and the indicator light of back light plate periphery, when color difference sensor detects defect, output is set to stop signal according to pre-set stop distance, so that defect accurately stays in back light plate area;Indicator light and sensor detection point position one-to-one correspondence, when detecting defect, corresponding horizontal position indicator light is lit, the device can quickly and accurately locate defect, improve detection efficiency and accuracy, facilitate operator processing, suitable for the defect detection positioning of multiple non-woven fabric.