115 results about "Needle penetration" patented technology

The utility model discloses needling equipment with a mesh belt mesh feeding mechanism. The needling equipment comprises the mesh belt mesh feeding mechanism and a needling mechanism, the mesh belt mesh conveying mechanism comprises two conveying meshes which are arranged up and down at an interval, and a fiber mesh is conveyed between the two conveying meshes; the up-down conveying net is composed of a plurality of net belts which are sequentially arranged in parallel, and gaps allowing needles of the needling mechanism to penetrate through are formed between the adjacent net belts. The mesh belt mesh conveying mechanism is adopted to replace a common mesh pressing roller, a mesh stripping plate and a mesh supporting plate, the phenomenon that a fluffy fiber mesh is blocked when entering a needling area due to the fact that the fiber mesh rebounds due to the fact that gaps exist between the mesh pressing roller and the mesh stripping plate as well as between the mesh pressing roller and the mesh supporting plate can be avoided, the fiber mesh is clamped and synchronously conveyed between the upper conveying mesh and the lower conveying mesh, and the needling efficiency is improved. The efficiency of the needling equipment can be greatly improved, and the process speed limitation of the traditional needling equipment is broken through.

The invention provides a machine learning-based acupuncture combined transcranial magnetic stimulation scheme selection method, which comprises the following steps of: performing acupuncture on an object, recording acupuncture data, and obtaining acupuncture text characteristics; the acupuncture data comprises acupuncture object data and acupuncture operation data, the acupuncture object data comprises gender, age, disease name, symptom, medical history and living habit, and the acupuncture operation data comprises body position, acupuncture point, acupuncture sequence, needle inserting, needle moving and duration; performing transcranial magnetic stimulation on the needled object for multiple times to obtain transcranial magnetic stimulation data, the transcranial magnetic stimulation data including hot spot positioning, working parameters, process data and effect data, and obtaining transcranial magnetic stimulation features; establishing association between acupuncture text features and transcranial magnetic stimulation features, constructing a database storing multiple groups of acupuncture combined transcranial magnetic stimulation schemes, and selecting a layered random forest regression model for training; and selecting an acupuncture combined transcranial magnetic stimulation scheme from the database according to actual data by using a reverse prediction method.

1. The name of the design product: needle plate polishing mold for needle loom. 2. The use of the design product: used for clamping the needle plate of the needle loom and guiding the polishing treatment of the surface and needle hole of the needle plate by abrasive. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses a forming method of an aerogel heat insulation part, which comprises the following steps: selecting a needling die, a forming die and a porous pressing plate according to the shape and the size of a target heat insulation part, needling and forming a fiber preform on the needling die, coating the preform with demolding cloth, and sewing at the edge; the prefabricated body is arranged in a forming mold, the mold gap is adjusted twice, two-step vacuum-assisted sol-gel dipping compounding is conducted, gel aging, solvent replacement and supercritical drying are completed together with the mold, and a finished product is obtained after demolding. According to the method, machining is not needed, fiber completeness can be kept, thin part machining cracking is effectively avoided, the product thickness precision and surface flatness are improved, the defects of air holes, insufficient pouring and the like are overcome, and the method is suitable for preparing thin aerogel heat insulation parts of various structures.

A composite textile can include one or more nonwoven fiber webs (e.g., with staple fibers) joined to one or more functional layers (e.g., nonwoven layer with elastomeric continuous filament fibers). In at least some examples, the layers are joined by fiber plugs, which include bundles of staple-fiber portions extending through (and frictionally retained within) openings (e.g., needle-penetration openings) within the composite textile. In addition, the fiber plugs can have varied properties that are collectively optimized to impart desired properties (e.g., stretch properties) to the composite textile. For example, the fiber plugs can include different numbers of fibers and can be anchored at different depths within the composite textile.

1. Name of the product in this design: Lawn Lamp (Needle-pierced Guanxiang Four Scenes). 2. Purpose of this design: for decorative lighting. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted. 6. Other situations requiring explanation: Other explanations: The front view, rear view, left view, and right view of the changed state are the power-off state of the front view, rear view, left view, and right view of this application.

The application discloses a kind of bubble elimination device and method for complex curved surface component automatic laying, belong to composite material laying technical field, including rack, be provided with needle roller mechanism, compaction roller mechanism on rack;Needle roller mechanism includes several needle roller, be provided with needle on needle roller, each needle roller is connected with rack by first attitude adjusting component, and first attitude adjusting component realizes the attitude adjustment of needle roller;Compaction roller mechanism includes several compaction rollers, each compaction roller is connected with rack by second attitude adjusting component, and second attitude adjusting component realizes the attitude adjustment of compaction roller.The application is integrated with needle roller mechanism, compaction roller mechanism, each needle roller is adapted to a first attitude adjusting component, each compaction roller is adapted to a second attitude adjusting component, to make needle roller mechanism, compaction roller mechanism can adapt to the defoaming compaction operation of different curvature component surface sheet.

The utility model provides a needling rolling device for a perforated film, which comprises a rack, an upper roller and a lower roller are arranged on the rack, a plurality of arrayed conical bulges are arranged on the surface of the upper roller, grooves corresponding to the bulges are arranged on the surface of the lower roller, raised positioning thimbles are arranged at the bottoms of the grooves, and the positioning thimbles are arranged on the surfaces of the upper roller and the lower roller. And the height of the positioning ejector pin is lower than the depth of the groove. By means of the structure, when a large hole of a punching film is punched, the punching film passing through can be rolled under the cooperation of the protrusion of the upper roller and the groove of the lower roller, and the punching position can be positioned under the arrangement of the positioning ejector pin of the groove, so that the accuracy of the hole position is improved, and the punching efficiency is improved. The deviation of the hole site is avoided, and the processing quality of the large hole of the perforated film is improved.

This invention provides a method for assessing the risk of internal short-circuit failure in a battery cell. The method includes acquiring the cell's parameter information and calculating the theoretical limiting short-circuit resistance value; preparing a test electrode assembly; performing a needle penetration test on the test electrode assembly; measuring and obtaining the actual short-circuit resistance value of the electrode plates in the test electrode assembly; and comparing the actual short-circuit resistance value with the theoretical limiting short-circuit resistance value to determine the level of short-circuit failure risk of the electrode assembly. This method, by comparing the theoretical limiting short-circuit resistance value with the actual short-circuit resistance value, can quickly assess the level of short-circuit failure risk of the test electrode assembly, shorten the assessment cycle, provide feedback and guidance for product design, and save on cell sample manufacturing and testing costs by using a test electrode assembly instead of a real battery cell.

A drug delivery device includes an ingestible pill including an enteric coating that covers a patch which defines therein a chamber, the patch being constructed to allow entry of liquid into the chamber. The patch includes at least one raised pouch that protrudes outwardly from the patch and which is in fluid communication with the chamber. The at least one raised pouch includes at least one drug-delivery needle. A gas-generating substance is disposed in the chamber. The gas-generating substance is configured to release gas after the liquid has entered the chamber, the gas being flowable into the at least one raised pouch.

This application provides a flexible production line capable of producing multi-grammage PET filament composite materials, relating to the field of nonwoven fabric production equipment technology. The production line includes, in sequence, a raw material processing unit, a mixing unit, a screw melt extrusion unit, a filtration unit, a metering extrusion unit, a drawing and filament forming unit, a hot air preheating unit, and a path switching mechanism for switchable high-grammage and low-grammage paths. The high-grammage path includes a cross-laying unit, a needle-punching composite unit, a slicing unit, and a hot-pressing unit, while the low-grammage path includes a hot-rolling unit and a winding and slitting unit. The drawing and filament forming unit employs a three-section fiber drawing machine (upper, middle, and lower), with a 30°–45° deflected airflow introduced in the middle section. This application achieves flexible switching between high-grammage and low-grammage products through the path switching mechanism, enabling the production of PET filament composite materials ranging from 9 g / m² to 2600 g / m² on the same production line, suitable for applications such as automotive sound insulation materials and filter materials.

This invention discloses an intelligent, efficient, and low-damage garlic scape harvester, comprising a walking base on which a divider, a pre-processing mechanism, a clamping and conveying mechanism, and a storage bin are mounted. The pre-processing mechanism includes a needle holder, needles, and a pushing mechanism, as well as a strip plate arranged parallel to the needle holder, with through holes corresponding to each needle. A guide mechanism and a spring are provided between the strip plate and the needle holder, the spring causing the strip plate to tend to move away from the needle holder. The pre-processing mechanism also includes a holding block and a driving component, the holding block being able to enter or leave the space between the needle holder and the strip plate under the action of the driving component. In this invention, on the one hand, different functional states can be determined according to the characteristics of the garlic scape for needle piercing or clamping operations. On the other hand, it can effectively improve the success rate of needle penetration into the garlic scape, ensuring that the needles can be successfully pulled out of the garlic scape, preventing damage to the garlic scape and leaves due to untimely needle removal.

A shape forming tool for pre-carbonization shaping of a fibrous preform is provided, comprising a rounded preform and an inner die to fit within the preform. The rounded preform may be a cylindrical, conical, or frustoconical shape. The inner die may be of a non-uniform diameter and / or have complex features. The preform may shrink to conform to the inner die.

The application provides a needle punching rubber extraction method and device, and particularly relates to the following steps: S10: adjusting a needle punching mechanism to a set initial position, and obtaining a rubber extraction instruction; S20: according to the rubber extraction instruction, moving the needle punching mechanism to a target needle punching point in a first direction, and after the needle punching mechanism reaches the target needle punching point and completes the needle punching operation, moving the needle punching mechanism in a second direction; wherein, when the needle punching mechanism moves to a trigger position in the first direction or the needle punching mechanism moves to the trigger position in the second direction, a walking mechanism starts to move along the displacement direction of a guide rail frame to drive the needle punching mechanism to move along a rubber tree; S30: when the needle punching mechanism reaches a next needle punching position of the rubber tree, obtaining the rubber extraction instruction again, moving the needle punching mechanism to the target needle punching point in the first direction according to the rubber extraction instruction, and performing the needle punching operation; and S40: repeating steps S20 to S30 until the needle punching operation of the whole rubber tree is completed. The needle punching rubber extraction method ensures operation accuracy and reduces dependence on manual work.

The utility model discloses needle-punched thermal composite foamed cotton which comprises an inner layer and an outer layer, and glycerin monostearate gathering surface layers are arranged on the surfaces of the inner layer and the outer layer. Galling layers are arranged on the corresponding surfaces of the inner layer and the outer layer and comprise wool tops pulled up from the inner part of the inner layer and / or the outer layer and wool tops pulled up from the glyceryl monostearate gathering surface layer; the wool tops are heated and melted to form a bonding layer; and the bonding layer is provided with a cavity. The utility model has the advantages that: the hindrance caused by the accumulation of the glycerin monostearate on the surface layer to the integration of the glycerin monostearate is overcome; and the melting bonding layer is formed only through melting of the wool tops, so that the bonding strength is improved, the cavities are formed in the bonding layer, the elasticity of the whole material is improved, and the steel coil packaging material is particularly suitable for steel coil packaging with a damping effect.

The invention discloses battery bottom needling test equipment, and relates to the technical field of battery test, and the equipment comprises a fixed bracket which is provided with a supporting end and is rotatably provided with a plurality of carrier rollers; the transverse moving mechanism is arranged at the bottom of the fixed bracket through a bracket; the longitudinal moving mechanism is arranged on the transverse moving mechanism so that the transverse moving mechanism can drive the transverse moving mechanism to transversely move below the carrier rollers; and the needling mechanism is arranged on the longitudinal moving mechanism, so that the longitudinal moving mechanism drives the needling mechanism to transversely move below the carrier rollers. Through the transverse moving mechanism and the longitudinal moving mechanism, and the plurality of carrier rollers used for lifting the battery packs are rotatably arranged on the fixed bracket, so that the needling mechanism can be finely adjusted along the X axis and the Y axis to carry out needling experiments on the battery packs with different sizes and at different positions, and the applicability of the test equipment is effectively improved; and the test efficiency of the battery pack is indirectly improved.

The invention relates to the technical field of power battery testing, in particular to a power battery thermal runaway testing method, system and device. The device comprises a needling machine body integrated hydraulic system, a needling assembly is vertically arranged above the needling machine body integrated hydraulic system and is driven by the hydraulic system to feed in the Z direction, a steel needle with a built-in heating assembly is installed at the front end, and a plurality of temperature collecting points are arranged in the steel needle at different positions in the axial direction; the battery fixing assembly comprises a supporting platform fixed to the needling machine body and a replaceable fixing clamp and is located over the needling assembly. The voltage temperature monitoring assembly comprises a voltage sensor connected with the positive and negative electrodes of the battery and temperature sensors arranged at the positive and negative electrodes, the large surface, the side surface and steel needle temperature acquisition points of the battery; the control assembly is in signal connection with the hydraulic system, the heating assembly and the voltage and temperature monitoring assembly. According to the technical scheme, the problem that needling and internal heating cannot be integrally implemented or serially implemented in the prior art can be solved.

The utility model discloses an asphalt penetration testing device and relates to the technical field of asphalt tests. The asphalt needle penetration testing device comprises a needle penetration instrument, a constant-temperature controller, a constant-temperature container and a sample transfer device positioned in the constant-temperature container, the penetrometer is used for carrying out detection, penetrometer and penetrometer reading on an asphalt sample, and the constant temperature controller is connected with the constant temperature container and is used for carrying out constant temperature treatment on the asphalt sample in the constant temperature container; the sample transfer device comprises a rotating device located in the middle and a plurality of moving devices located on the outer side of the rotating device, each moving device comprises a sliding channel and a sample containing piece, the sliding channels are in sliding connection with the sample containing pieces, the sample containing pieces are used for containing the asphalt samples, and the rotating devices are used for fixing and rotating the sample containing pieces. By adopting the asphalt penetration testing device, the problem of low working efficiency of manual operation in the prior art can be solved.

The window structure comprises a window frame and a window sash arranged on the window frame in a swinging mode, the radial section of the bottom wall of the window frame is arranged in a step shape and forms a step face used for being in clearance fit with the bottom wall of the window sash when the window sash and the window frame are closed, and a dustproof blanket is laid on the step face. The dustproof blanket is formed by sequentially stacking and adhering a surface layer, a middle layer and a bottom layer, a connecting structure used for detachably connecting the laying blanket with the bottom wall of the window frame is arranged between the bottom layer and the step surface, and the surface layer is a fluff layer formed by processing elastic knitted fibers through a weaving or tufting or needling process. The side-hung window solves the problems that dust is prone to being accumulated at the bottom of a window frame of a traditional side-hung window, and accumulated dust is difficult to deal with.

The present application relates to the technical field of filter material preparation, and particularly relates to a wear-resistant blended gradient needle-punched filter material and a preparation method, which comprises the following steps: S1, preparing a first mixture and a second mixture; S2, respectively laying the first mixture and the second mixture to obtain an inner layer and an outer layer; S3, hooking and bonding the outer layer and the inner layer by pre-punching to obtain a base material; S4, vacuum impregnating the base material in an impregnation liquid for h; S5, treating the base material in step S4 at 80-120 DEG C for 15-30 min; S6, applying a finishing agent to the surface of the base material treated in step S5 by padding; S7, treating the base material treated in step S6 at 150-200 DEG C for 3-5 min; and S8, laying a PTFE microporous membrane on the base material treated in step S7. The filter material prepared by the present application has high transverse breaking strength and longitudinal breaking strength, and excellent filtering efficiency.

The invention discloses a method for determining microcosmic RVE of an acupuncture ceramic matrix composite material, and belongs to the field of composite material design. According to the method, a CT projection image of the microstructure of the material is obtained by cutting a sample and performing CT scanning. Secondly, recognizing the geometric dimension (side length and height) of the RVE in the image, and counting the volume distribution of the RVE; then, fitting an exponential distribution function through a volume distribution histogram, and defining an integral range of a characteristic length, which is a core index for representing the statistical uniformity of the material, on the basis of the function; and finally, calculating the average height of the RVE in combination with the integral range, and determining the side length of the RVE as a volume constraint, thereby establishing a mesoscopic RVE model with statistical representativeness. According to the method, the size of the RVE is determined from the aspect of probability by quantifying the volume distribution and the feature length.

This utility model discloses a sheet-like cooling eye mask, comprising a three-layer composite structure from the outside to the inside. The outer layer is a membrane fabric layer, the middle layer is a functional layer, and the functional layer includes a sheet-like cooling pad adhered to the inner surface of the membrane fabric layer. The sheet-like cooling pad is a solid phase change material sheet. During the pressing process, the sheet-like cooling pad is shaped as required by a mold. The sheet-like cooling pad is bonded to the bottom surface of the membrane fabric layer by hot melt adhesive dot matrix. The center of the sheet-like cooling pad has an elliptical through hole, the position of which corresponds to the eye area. The inner layer is a skin-friendly non-woven fabric layer, which covers the opening of the elliptical through hole. The edge of the skin-friendly non-woven fabric layer is connected to the membrane fabric layer by ultrasonic welding to form a cooling pad receiving cavity. In summary, it has the advantages of reducing the number of needle-punched fabric layers, reducing cost, reducing pressure on the eye area, preventing the sheet-like cooling pad from directly contacting the eye, reducing cold compress irritation, and facilitating continuous replenishment of essence.

The invention relates to an efficient intelligent bag breaking machine gripper, and relates to the technical field of material unpacking treatment, the efficient intelligent bag breaking machine gripper comprises a rack, two rotating plates are rotatably arranged on the rack, gripping blocks are rotatably arranged at the bottoms of the rotating plates, pricking needles are uniformly distributed on the bottom surfaces of the gripping blocks in the length direction of the gripping blocks, and the pricking needles are used for pricking into material bags; a first driving mechanism is arranged on the rotating plate and used for driving the grabbing block to rotate, the grabbing block drives the pricking needles to be switched between the vertical state and the horizontal state under the action of the first driving mechanism, and a second driving mechanism is arranged on the rack and used for driving the rotating plate to rotate. The rotating plate drives the pricking needles on the grabbing block to move in the direction with the needle tips facing upwards under the action of the second driving mechanism. Through the combined action of vertical piercing, horizontal switching and upward lifting of the pricking needle, residual materials in the bag are fully shaken off, material waste is reduced, and the material utilization rate is increased.

The application relates to the technical field of composite material preparation, and specifically discloses a preparation method of a high-performance carbon fiber 2.5D flat plate. The preparation method comprises the following steps: S1, preparing carbon cloth and a net tire; S2, preparing a preform: adopting the carbon cloth and the net tire to form unit layers, alternately laying the unit layers, and layer-by-layer needling, first using a first needle to perform needling, and when the thickness of the plate is greater than 6 mm, using a second needle to perform needling; compared with the first needle, the distance from the first stabbing point of the second needle to the needle tip is shortened by 1-2 mm, other hooks are adjusted to the position of the needle tip, the adjustment distance is equal to the distance from the first stabbing point of the second needle to the needle tip, and the needle hook angle of the second needle is smaller than that of the first needle by 5-6 DEG; and S3, obtaining a C / C flat plate through deposition, impregnation, carbonization, high-temperature treatment and machining treatment of the fiber preform obtained in the above step. The method can be used for preparing a carbon fiber flat plate, the carbon fiber flat plate prepared by the method has small pinholes and uniform distribution, and has high comprehensive performance.

The invention provides a preparation method and a preparation device of a composite geotextile and the geotextile. The preparation method specifically comprises the following steps: preparing a polypropylene filament non-woven geotextile, a short fiber needle-punched geotextile and a filament geotextile; placing the short fiber needle-punched geotextile between the polypropylene filament non-woven geotextile and the filament geotextile; needling the three layers of geotechnical cloth through needling equipment, so that short fibers of the short fiber needle-punched geotechnical cloth are respectively wound with the polypropylene filament non-woven geotechnical cloth and the filament geotechnical cloth to form composite geotechnical cloth; in the conveying and rolling process of the composite geotechnical cloth, the hot-pressing compound machine is started, and the hot-pressing plate is driven to press the composite geotechnical cloth downwards; and the pressed composite geotechnical cloth is subjected to electrostatic adsorption, and then a winding completion stage is started. According to the preparation method and device of the composite geotechnical cloth and the geotechnical cloth, the polypropylene filament non-woven geotechnical cloth can be compounded with the filament geotechnical cloth in a needling mode, and the performance of the composite geotechnical cloth is improved.

The application discloses a kind of fatigue notch coefficient's consideration needle-punched composite material fatigue life prediction method, it is related to composite material fatigue strength theory field.The method of the application includes, the calculation of material stress concentration coefficient, the influence of establishing stress level to material, the relationship between stress concentration coefficient and fatigue notch coefficient is established, the influence of stress concentration coefficient and fatigue notch coefficient is introduced by establishing stress level, the fatigue life of notch is calculated by means of smooth test piece S-N curve (stress-life curve), equation simplification.The fatigue life prediction method of needle-punched composite material considering fatigue notch coefficient proposed in the application has been verified by corresponding test of needle-punched ceramic matrix composite material.The proposed method has clear physical meaning, and can be used for constant amplitude fatigue life prediction of needle-punched composite material containing notch.

The application discloses a needled non-woven zinc-air battery flexible electrolyte film, which comprises a support body formed by interwinding PP fibers and PVA fibers and an alkaline aqueous solution in interwinding pores of the two fibers. 2 The thickness of the support body is 25-50 mm, the surface density of the support body is 200-210 g / m 2. The length of the PP fiber is 38±5 mm, the diameter is 1.2-2.0D, the length of the PVA fiber is 51±5 mm, and the diameter is 12-13D. The alkaline aqueous solution is composed of potassium hydroxide KOH and zinc acetate Zn(Ac)2. The application further discloses a preparation method of the needled non-woven zinc-air battery flexible electrolyte film. The application solves the problems of complex preparation process and poor mechanical property of the conventional electrolyte film in the prior art.