307 results about "Needle penetration" patented technology

The invention discloses a component global homogenized C / C-UHTCs composite material and a preparation method thereof.The preparation method comprises the steps that non-woven cloth is laid, then needling is conducted in the Z direction to obtain a carbon fiber preform, chemical vapor deposition is conducted on the carbon fiber preform to obtain a C / C composite material, molten salt infiltration treatment is conducted on the C / C composite material, a C / C-UHTCs porous body containing a UHTCs interface layer is obtained, and the C / C-UHTCs porous body containing the UHTCs interface layer is obtained; carrying out reactive infiltration treatment on the C / C-UHTCs porous body by adopting silicon-containing alloy powder to obtain a C / C-UHTCs composite material; the C / C-UHTCs composite material prepared by the preparation method provided by the invention has the advantages of extremely high density, extremely low porosity, no fiber damage, intact interface and uniformization of components, the mass ablation rate is a negative value after the C / C-UHTCs composite material is ablated by oxyacetylene flame at 2600 DEG C for 180s, and the C / C-UHTCs composite material has extremely excellent ablation resistance.

The invention discloses a preparation method of composite geotechnical cloth, belongs to the technical field of geotechnical material processing, and solves the problems of insufficient interlayer bonding strength, poor permeation stability and incapability of adapting to regional differentiation mechanical requirements in the traditional process. According to the method, two layers of synthetic fiber geotextile and a layer of polymer geomembrane are selected, and a gradient needling machine is adopted to implement a double-station gradient needling process, specifically, thick needle needling pre-reinforcement is synchronously conducted on the upper side and the lower side till the membrane thickness is 50-60% of the depth, then fine needle needling finishing is conducted till the membrane thickness is 70-80% of the depth, the needling density is preset to be 20-70 needles / cm according to different stress areas of a membrane material, and the needling density is 20-70 needles / cm according to different stress areas of the membrane material; in the process, data of needling depth, needling density and membrane material tension are collected in real time through a dynamic monitoring system, parameters are automatically adjusted, and finally a stable structure is formed through heat setting treatment at 120-140 DEG C for 8-12 minutes. The composite geotextile prepared by the method has a high-strength bonding interface and excellent anti-seepage performance, and is suitable for the engineering fields of water conservancy project anti-seepage, road base reinforcement, refuse landfill isolation and the like.

The invention discloses a high-temperature-resistant thermal protection coating reinforced composite material and a preparation method thereof, belongs to the field of light thermal insulation materials, and solves the problems that high-temperature sintering is needed in the preparation process of an existing thermal protection coating, and the coating effect is affected. The method comprises the following steps: mixing a functional material, a reinforcing agent and a sintering aid, ball-milling, and sieving to obtain a filler; adding the binding agent into the dispersing agent and stirring; adding the filler into the dispersing agent solution, and performing ultrasonic treatment and stirring to obtain a mixture; spraying the mixture onto a fiber web tire, and curing; a fiber web tire loaded with the thermal protection coating is obtained; laying the fiber web tire on the surface of the fiber felt, and combining the fiber web tire and the fiber felt through a needling process to obtain a fiber preform; placing the fiber preform in a mold, pouring resin into the mold, and sealing the mold; and carrying out sol-gel and normal-pressure drying to prepare the high-temperature-resistant thermal protection coating reinforced composite material. The prepared composite material is low in density, low in heat conductivity and excellent in ablation resistance.

The invention discloses a preparation method of a high-density carbon-carbon composite material, which comprises the following steps: soaking a needled prefabricated body in a resin mixed solution, vacuumizing and dipping, drying in a drying oven, then putting into a mold, carrying out hot-pressing curing molding, and carbonizing to obtain the high-density carbon-carbon composite material. According to the preparation method, the carbon-carbon composite material with the density larger than 1.2 g / cm < 3 > can be obtained through one-time dipping and one-time hot pressing, the production period is short, energy consumption is low, the production cost is remarkably reduced, and the carbon-ceramic composite material with the density larger than 1.2 g / cm < 3 > can be obtained through one-time dipping and one-time hot pressing. And the prepared carbon-carbon composite material can achieve a high-density effect when the density is low, and has the characteristics of good air tightness, difficulty in deformation at high temperature and the like.

The invention belongs to the technical field of material detection, and relates to a modified asphalt penetration measuring device and a use method thereof.The modified asphalt penetration measuring device is characterized in that the lower side of an installation frame is connected with a first limiting rod, and the farthest distance between the center of a standard needle installed on a measuring head assembly and the lower end of the first limiting rod is larger than or equal to 10 mm; the lowest point of the first limiting rod is higher than a standard needle installed on the measuring head assembly, two opposite second limiting rods are arranged on the installation frame in a sliding mode, and the two second limiting rods are located on the two sides of the position between the second limiting rods and the standard needle on the measuring head assembly respectively. The distance between the test point of the standard needle on the asphalt and the edge of the sample container is greater than or equal to 10mm by utilizing the limiting of the limiting rod I, so that the edge effect is avoided, the test point is close to the central area of the asphalt, and the measurement precision is improved; besides, the two limiting rods II are used for centering, limiting and stabilizing the sample containing vessel, so that the distance between the test points can be ensured to be greater than or equal to 10mm only by ensuring that the angle between the adjacent standard needles is close to 120 degrees, and mutual influence is avoided.

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.

A method for producing a composite material part comprising —a step of producing a preform formed of unidirectional continuous fibers oriented in at least one fiber orientation, —a step of applying non-woven filaments to the preform, and —a step of needling the filaments by means of a needling device comprising a plurality of needles, each needle being provided with a notch extending along a notch axis perpendicular to the main longitudinal axis of the needle, or several notches each extending along a notch axis perpendicular to the main longitudinal axis of the needle, the notch axes being parallel to each other, the needles and the preform being arranged so that the notch axes form a non-zero angle with the fiber orientation.

The invention relates to the technical field of needling machine equipment, in particular to a needling device suitable for a special-shaped composite material preform, which comprises a mounting seat, a speed reducing motor is connected to the mounting seat, the output end of the speed reducing motor is connected with a rotating shaft, the rotating shaft is connected with an eccentric through hole of an eccentric wheel, and the eccentric wheel is rotatably connected in a cylindrical needle bearing; the cylindrical needle bearing is inserted into a second through hole in the end of the push plate, the push plate is in sliding fit with the mounting base, the other end of the push plate is connected with the quick-change needle row, the other end of the quick-change needle row faces the tool, the bottom of the mounting base is connected with the horizontal moving part, and the quick-change needle row is adjusted to face the normal direction of a prefabricated body and conducts needling on the prefabricated body. The surface of the R-angle prefabricated body and the surface of the conical prefabricated body can be needled, and then the purpose of tight combination of fibers in the prefabricated body is achieved.

The invention discloses a needling mass transfer device based on a mechanical reciprocating structure, and relates to the technical field of mass transfer, the needling mass transfer device comprises a marble base, and a mechanical needling system, a blue film moving system and a PCB moving system which are arranged on the marble base, the mechanical needling system is arranged on a portal frame, and the portal frame is fixed at the top of the marble base; the PCB moving system is fixed to the center of the marble base, and the blue film moving system is arranged above the PCB moving system in a crossing mode and located below the mechanical needling system. According to the needling mass transfer device based on the mechanical reciprocating structure, the mechanical structure is used for driving the mechanical structure to conduct vertical needling through the rotating motor, and chips evenly distributed on a blue film are flexibly needled to a target welding spot; and non-direct motor driving, flexible contact and theoretically no transfer speed upper limit Mini LED chip mass transfer can be realized.

The utility model belongs to the technical field of batteries, and particularly relates to a positive plate, a battery and electric equipment, the positive plate comprises a positive current collector and an active material layer, the positive current collector is provided with a protection structure, the protection structure is arranged between the positive current collector and the active material layer, and the active material layer is arranged between the positive current collector and the active material layer. The protection structure comprises a ceramic layer and a gel layer, and the ceramic layer, the gel layer and the active material layer are sequentially arranged on the surface of the positive current collector in the thickness direction of the positive current collector; the ceramic layer and the gel layer can effectively form a dual-protection structure on the surface of the positive current collector, and when the battery is subjected to a needling test, the negative active material firstly contacts with the active material layer, then respectively contacts with the gel layer and the ceramic layer, and finally reaches the surface of the positive current collector, so that the negative active material can be effectively protected. Therefore, the contact area of the negative electrode active material and the positive electrode current collector is effectively reduced, the needling test passing rate of the battery is further improved, and the safety performance of the battery is improved.

The invention provides a needling method cement blanket and a processing technology thereof, and relates to the technical field of cement blankets, the needling method cement blanket comprises a top fabric layer, function complementation is achieved through a three-layer composite structure of the top fabric layer, a curable layer and a bottom fabric layer, a top polyester non-woven fabric has filtering and protecting effects, particles of the curable layer can be prevented from seeping out, and the effect of preventing the particles from seeping out is achieved. The high-strength polypropylene fiber woven fabric at the bottom layer provides stable support, so that the shape stability in construction and use is guaranteed; the integrated connection characteristic is prominent, all the layers are tightly combined through the needling technology, the layering problem is avoided, and the overall reliability is improved. The real-time monitoring module arranged on the needling machine can dynamically capture the thickness change of the curable layer, the response time is shortened to be within 0.5 second, and the thickness deviation can be found in time; deviation correction is automatic, when the thickness exceeds the threshold value of + / -0.5 mm, the spreading speed is automatically adjusted, manual intervention is not needed, the thickness out-of-tolerance rate is reduced to 1% or below from 15% or above of a traditional technology, and the problem of uneven thickness is thoroughly solved.

The invention discloses a carbon footprint measuring and calculating method and system in the production process of a needle-punched geotextile product, and belongs to the technical field of carbon footprint accounting, and the method comprises the steps: obtaining a plurality of production processing links of the needle-punched geotextile product; obtaining production data and auxiliary equipment data of a plurality of production processing links; acquiring a carbon emission factor matched with the production data and the auxiliary equipment data; and constructing a carbon footprint accounting model, and performing calculation based on the carbon footprint accounting model, the carbon emission factors, the production data and the auxiliary equipment data to obtain the carbon footprint in the production process of the needle-punched geotextile product. According to the method, the carbon footprint in the needle-punched geotextile production process can be comprehensively and accurately measured and calculated, an enterprise is assisted to locate a carbon emission key link, an energy-saving and emission-reducing strategy is formulated according to the carbon emission key link, the environmental competitiveness and the sustainable development capacity are improved, and effective technical support and reference examples are provided for carbon footprint measurement and calculation in related industries.

The invention discloses a needle-punched glass fiber aerogel sound-absorbing plate which comprises the following components: 30-50% of a silicon dioxide aerogel precursor, 20-40% of a needle-punched glass fiber felt, 1-3% of a silane coupling agent, 0.5-1% of a dispersing agent, 0.2-0.5% of a defoaming agent, 3-8% of reinforced fibers and 2-5% of a binder. Through needled glass fiber mat reinforcement, silane interface modification and normal-pressure drying processes, collaborative optimization of high strength (compressive strength is greater than 0.64 MPa), high sound absorption performance (sound absorption coefficient is greater than 0.8) and low heat conductivity coefficient (0.018) of the material is realized. The preparation process is simple, the cost is low, and the material is suitable for noise treatment in the fields of buildings, automobiles, aerospace and the like and has remarkable economic benefits and environmental benefits.

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 present application relates to a leather substrate heat drying and stretching device, belonging to the field of leather production and manufacturing, which includes a frame, an oven and an stretching mechanism, the stretching mechanism including a base sprocket, an extension sprocket, an extension chain and a pressure roller, a plurality of extension needle plates connected to the extension chain, the surface of the pressure roller abuts the surface of the base on the side away from the extension needle plate, a plurality of needles fixedly connected to the extension needle plate, and the needles pass through the base at the side edge of the base; two extension chains are provided and are respectively located on opposite sides of the base, the extension sprocket is rotatably arranged in the oven, the extension sprocket is engaged with the extension chain, the extension sprocket and the base sprocket are respectively located on opposite sides of the extension chain, and in the direction of movement along the base, the extension chain between the base sprocket and the extension sprocket gradually moves away from the middle of the base along the width direction of the base. The base is stretched by pulling the base through the stretching mechanism, so that the base is actively deformed to the target width, improving the controllability of the base's thermal deformation and facilitating subsequent processing.

The invention relates to the technical field of sewing machines, in particular to a control method for preventing needle breakage during backstitch, which mainly comprises the following steps: a feeding motor and a feed lifting motor respectively drive a feeding tooth to horizontally move back and forth and move up and down; a standard sewing mode, a thick material backstitch mode and a cloth thickness threshold value are set, in the thick material backstitch mode, the rotation time sequence of a feeding motor relative to a main shaft in the standard sewing mode is advanced by a preset angle, and the rotation time sequence of a feed lifting motor relative to the main shaft is kept unchanged; the feeding motor and the feed lifting motor jointly drive the feeding teeth to move along a similar rectangular thick material backstitch track, and in a cloth feeding period when the feeding teeth move along the thick material backstitch track, the moment when the feeding teeth complete front and back horizontal cloth feeding is earlier than the moment when the machine needle pierces the cloth; when the thickness of the sewn cloth exceeds the cloth thickness threshold value and the sewing process is backstitching, the standard sewing mode is switched into the thick material backstitching mode for sewing. And needle breakage during backstitching of thick materials can be avoided.

The present invention discloses a needling mechanism, a needling machine and a method for replacing needles of an automotive carpet, mainly relating to the field of carpet needling. It includes a pressing plate assembly and a needle plate assembly with an up-and-down lifting stroke; the needle plate assembly includes a mounting frame, a pressing plate, a quick-installation plate and a barbed needle. The pressing plate is located below the mounting frame and its height position relative to the mounting frame is adjustable. The quick-installation plate is hinged to the mounting frame. Equally spaced strip-shaped grooves are provided on the quick-installation plate. A strip-shaped through hole corresponding to its length direction is provided in the center of the bottom of the strip-shaped groove. The width of the strip-shaped through hole is adapted to the diameter of the barbed needle. A rectangular block corresponding to the width of the strip-shaped groove is provided at the top of the barbed needle. The top surface of the rectangular block is located above the opening of the strip-shaped groove. The bottom surface of the pressing plate is in contact and cooperation with the top surface of the rectangular block. The pressing plate assembly has a flat plate below the barbed needle, and a needle hole is provided at the installation position of the flat plate corresponding to the barbed needle. The beneficial effect of the present invention is that the installation and maintenance of the barbed needle are more labor-saving, fast, and the fixation is reliable and firm.

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.

The utility model relates to the technical field of composite needle-punched non-woven fabric production, and discloses a composite needle-punched non-woven fabric winding mechanism which comprises a connecting frame, the front inner side and the rear inner side of the connecting frame are rotationally connected with a first guide roller, an electric push rod is started through a fixed winding quick-release mechanism, then a hexagonal column of the electric push rod is completely separated from a winding roller, and the first guide roller is connected with a second guide roller. Then the winding rollers are sleeved with the corresponding winding drums of different models, the rotating blocks are manually rotated, so that the winding drums are fixed, the winding rollers of different models are rapidly fixed, the winding work of the composite needle-punched non-woven fabrics of different models is met, meanwhile, the operation is reversely repeated in the later-period disassembling process, and the working efficiency is greatly improved. According to the device, the hexagonal column of the device is separated from the winding roller, so that the subsequent composite needle-punched non-woven fabric and the winding roller can be conveniently and rapidly disassembled, the situation that more time and energy are spent on workers is avoided, meanwhile, the outer portion of the clamping block does not make contact with the inner wall of a winding barrel, and winding rollers of different models can be rapidly disassembled.

The invention relates to the technical field of spiral paving, and discloses a spiral paving device which is characterized in that a rotary paving mechanism is arranged on the left side of the top of a horizontal ground, a movable paving mechanism is arranged on the right side of the rotary paving mechanism, and a paving working mechanism is arranged on the front side of the movable paving mechanism; a prepreg cloth transferring mechanism is arranged on the right side of the paving working mechanism, an unwinding and cutting mechanism is arranged on the right side in the prepreg cloth transferring mechanism, the rotary paving mechanism comprises a fixing table, the fixing table is arranged at the top of the horizontal ground, and the bottom of the fixing table is attached to the top of the horizontal ground; and the top of the fixed table is rotationally connected with a rotating structure. A first needling tooling at the tail end of the six-axis robot firstly loosens a material piece, the material piece is laid on a mold body, meanwhile, a rubber strip is clamped into a groove in the mold body, an air cylinder drives a fixing structure to rotate on the inner side of a fixing frame, the material piece is controlled on a mold, and an external motor drives a rotating structure to drive the whole mold to rotate.

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.

The utility model discloses a device for testing the needle passing performance of a medicine injection. The device comprises an equipment base; a box body and a fixing frame are installed at the top of the equipment base, an injector is arranged at the top of the fixing frame through a clamping piece, one end of the injector penetrates into an inner cavity of the fixing frame and is provided with an injection needle, a supporting arm is movably arranged in an inner cavity of the box body, and the supporting arm penetrates through the box body and extends outwards; according to the utility model, the lifting assembly is arranged in the box body to move the support arm up and down, then the injector is pushed and pulled through the mounting seat, so that liquid medicine is sucked and discharged by the injector, and then the injection needle is mounted on the injector, so that the needle passing performance of medicine passing through the injection needle can be detected when the mounting seat moves up and down; meanwhile, the device is further provided with a pressure sensor and a display screen, the push-pull force of the injector is visually displayed on the display screen, the needle passing performance of the medicine is accurately reflected, the structure is simple, operation is easy, and the testing period is short.

The utility model relates to the related field of cotton quilt needling machines, in particular to a cotton quilt needling machine for cotton quilt production, which comprises a device body, the device body internally comprises a main frame, a storage component and an adjusting component, a needling frame is arranged at the top of the main frame, a control box is arranged on one side of the lower end of the main frame, and the control box is connected with the storage component. A mounting groove is formed in one side of the lower end of the main rack, a limiting hole is formed in the inner wall of the mounting groove, the storage assembly is rotationally mounted in the mounting groove, the adjusting assemblies are mounted on the two side walls of the main rack, the storage assembly comprises a storage box, a storage groove is formed in the inner side of the storage box, and the storage groove is formed in the inner side of the storage box. An extension plate is rotationally arranged in the storage groove, the adjusting assembly comprises a fixing sleeve, the storage box and the extension plate can be conveniently taken and placed, the processed end of the cotton quilt can be conveniently supported and placed, the supporting rod can be rotationally adjusted, the unprocessed side of the cotton quilt can be conveniently supported and placed, and the rear end of the cotton quilt is prevented from mopping the ground.

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.

Systems and methods are disclosed that include providing a syringe with an enhanced needle, at least part of which is subjected to a treatment that enhances the performance of the needle. The treatment is administering at least a portion of the needle by projecting a heated, ionized airflow over the at least a portion of the needle at a temperature of at least 225°F to not greater than 325°F for not greater than 1 second. The treatment reduces a post-draw needle penetration force of the needle as compared to a traditional untreated needle, enhances lubrication adherence to the needle, and reduces residual metallic particle contamination resulting from the manufacturing process when compared to a traditional needle that has not been subjected to a surface treatment, which result in a significant reduction in the pain patient may experience during an injection.

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.

To provide a tufted carpet with no edge processing using a needle punch base fabric, which does not require an edge processing step, can reduce the number of steps in carpet manufacturing, shortens the production time per carpet, eliminates the need for thread materials and machine maintenance for edge processing, and further eliminates labor costs, thereby reducing the overall production cost. [Solution] The borderless tufted carpet is composed of, from top to bottom, a yarn layer 2, a needle-punched base fabric layer 1, an emulsion layer 3, a binder layer 4, a backing fabric layer 5, and an anti-slip layer. The yarn layer is tufted onto the needle-punched base fabric layer. The needle-punched base fabric layer is a needle-punched nonwoven fabric and is integrated with the binder layer by either lamination with a binder or heat and pressure consolidation. The emulsion layer is evenly applied to the underside of the needle-punched base fabric layer. The binder layer is made of one of PE, EVA, PO, SBR, asphalt, PU, ​​or TPE.