53results about "Flat warp knitting machines" patented technology

The present invention relates to the technical field of plush fabrics and their preparation, and particularly relates to a warp-knitted integrated plush fabric and a preparation method thereof. The plush fabric includes a first plush layer, a second plush layer, and a connecting layer located between the first plush layer and the second plush layer. The first plush layer includes a front comb extension line layer, which is formed by processing the extension lines of the front comb. The connecting layer sequentially includes a middle comb extension line layer, a back comb extension line layer, a middle comb coil layer, and a front comb coil layer from the first plush layer to the second plush layer. Each layer is formed by the common interlacing of the extension lines of the middle comb, the extension lines of the back comb, the coils of the middle comb, and the coils of the front comb in sequence. The second plush layer includes a back comb coil layer, a back comb extension line layer, or a combined layer of both. The preparation method includes yarn warping, machine knitting, and dyeing and finishing. The present invention can form various variable structures, and at the same time, the respective types and colors of the plush on the front and back can be independently selected and freely combined according to the design and requirements, forming many style effects.

The application relates to the technical field of jacquard cloth processing, improves the problem that the concave-convex pattern exists on the inner surface of the existing jacquard cloth after processing and influences the skin feeling, discloses 3D jacquard cloth with fishing line interlayer and a warp knitting machine, which comprises a base tissue layer and a jacquard layer, the jacquard layer comprises at least a first jacquard layer and a second jacquard layer, the first jacquard layer and the second jacquard layer are sequentially knitted on the base tissue layer, the first jacquard layer is knitted by elastic threads, the second jacquard layer is knitted by common yarns, the second jacquard layer comprises pattern tissues and mesh tissues, and the pattern tissues and the mesh tissues cooperate to form a jacquard pattern. The application can form effective spacing between the inner and outer layers of cloth through the intermediate elastic threads, the jacquard cloth can be directly used as the fabric of clothes or shoes, and an inner lining is not needed.

The application relates to the technical field of warp knitting fabric processing, and relates to a processing technology of a yarn-pressing type knitted fabric. The processing technology is obtained by operating a double needle bed warp knitting machine to obtain a front fabric piece and a back fabric piece which are connected to each other. The double needle bed warp knitting machine comprises a front needle bed and a back needle bed. The front needle bed is provided with a first flower presser and a second ground combing bar which are arranged in sequence. The back needle bed is provided with a fourth ground combing bar and a fifth ground combing bar which are arranged in sequence. A third ground combing bar is arranged between the second ground combing bar and the fourth ground combing bar. The front needle bed and the back needle bed are respectively provided with a yarn guiding and looping assembly which is matched with the third ground combing bar. The application is helpful for economically upgrading old equipment to meet the production demand of new fabrics.

A double-needle bed Raschel warp knitting machine includes a pair of front jacquard guide bars (JB2, 3) and a pair of rear jacquard guide bars (JB4, 5) as jacquard guide bars. The front jacquard guide bars (JB2, 3) and the rear jacquard guide bars (JB4, 5) are half-pitch jacquard guide bars. As ground guide bars, it includes at least one front ground guide bar (GB1) located in front of the front jacquard guide bars (JB2, 3) and at least one rear ground guide bar (GB6, 7, 8) located in rear of the rear jacquard guide bars (JB4, 5). The double-needle bed Raschel warp knitting machine is characterized in that the four half-pitch jacquard guide bars are equipped with jacquard yarn guides at the same position in the width direction of the knitting machine.

The invention discloses a positive tension compensation device for ECMO oxygenation film low-tension weft laying, which comprises a brushless motor, a transmission gear set, a pull-back type spring motor, a yarn storage drum and a yarn winding disc, and is characterized in that the brushless motor is connected with the pull-back type spring motor through the transmission gear set, and the pull-back type spring motor is connected with the yarn storage drum; the transmission gear set is connected with the yarn winding disc, and the yarn winding disc is connected with the yarn storage drum. The brushless motor drives the pull-back type clockwork motor to store energy through the transmission gear set and drives the yarn storage drum to rotate to achieve positive yarn storage, weft laying yarn is stored on the yarn storage drum, and the yarn winding disc assists in yarn storage through inertia of the weft laying mechanism. According to the device, a pull-back type spring motor is introduced to serve as a regulation medium, and self-adaptive compensation of yarn tension is achieved through elastic potential energy of a pull-back type spring.

The application discloses a one-way moisture-conducting imitated shuttle-weaving warp-knitting lining fabric and a production process, and belongs to the field of textile technology. The application is characterized by the following: three guide bars and a lining device, namely GB1, GB2, GB3 and MS1, are arranged on a warp-knitting machine, GB1 forms a loop, GB2 and GB3 do not form a loop, and MS1 adopts full-width lining; GB1 and MS1 adopt hydrophobic yarn; GB2 and GB3 adopt hydrophilic yarn; GB1 is fully threaded and adopts two or more needle flat knitting, and forms a bottom layer by reverse lapping; MS1 is fully threaded, GB2 and GB3 are alternately threaded and unthreaded, the unthreaded portions are complementary, the lining structure change and the bottom layer form an "avoiding lapping effect", the hydrophilic and hydrophobic properties of the yarns on the front and back surfaces of the fabric are different, a wetting gradient is formed, and the one-way moisture-conducting effect is achieved. Test results show that the horizontal and vertical water washing size change rates of the one-way moisture-conducting imitated shuttle-weaving warp-knitting lining fabric are both less than or equal to 1%, and the one-way moisture-conducting index reaches level 3 or above.

The lawn machine comprises a looping mechanism, a guide bar mechanism and a grass filament cutting mechanism, the guide bar mechanism comprises a front guide bar seat and a rear guide bar seat, the front guide bar seat and the rear guide bar seat are installed on a front swing shaft and a rear swing shaft respectively, at least two ground guide bars are installed on the front guide bar seat, and the grass filament cutting mechanism is installed on the rear guide bar seat. The grass thread cutting mechanism comprises a plurality of velvet cutting hooks, a hook knife seat, a plurality of cutting knives and a cutting knife seat, the plurality of cutting knives are arranged on the cutting knife seat at intervals and in parallel in the width direction of the lawn mower, the plurality of cutting knives are driven by a second driving mechanism to move back and forth in the front-back direction of the lawn mower, and at least two grass thread guide bars are arranged on the back guide bar seat in the front-back direction of the lawn mower. Grass threads of different colors penetrate into the grass thread guide bars, the velvet cutting hooks are arranged on the bush-hook base in the width direction of the lawn mower at intervals in parallel, and the distances between the velvet cutting hooks and the latch needle are equal. The artificial lawn forming machine can produce artificial lawns with various color blocks at a time, and is simple in structure and high in production efficiency.

The present invention relates to a stitch-bonding machine with horizontally aligned slide needles arranged at a stitch-bonding station of the stitch-bonding machine, at least one weft thread laying device for laying at least one weft thread in a weft thread laying area of the stitch-bonding machine, and opposing, circulating weft thread transport chains. The invention further relates to a stitch-bonding method in which, on a stitch-bonding machine, when properly set up for operation, at least one horizontally extending weft thread is produced with a reciprocating weft thread laying device, which is fed to horizontally moving slide needles arranged at a stitch-bonding station of the stitch-bonding machine by means of opposing, circulating weft thread transport chains.In the stitch-bonding machine according to the invention, when properly installed, the weft thread laying device is arranged above the stitch-bonding station, and the weft thread transport chains run from top to bottom throughout the entire weft thread laying area. In the stitch-bonding method according to the invention, the at least one weft thread is continuously fed from above to the stitch-bonding station by the weft thread transport chains.

The application discloses a double-face asynchronous warp knitting machine, comprising: a first needle bed system, comprising a first needle bed assembly and a first needle bed driving mechanism, the first needle bed assembly comprising first latch needles, the first needle bed driving mechanism being used for driving the first latch needles to operate according to a first curve; a second needle bed system, comprising a second needle bed assembly and a second needle bed driving mechanism, the second needle bed assembly comprising second latch needles, the second needle bed driving mechanism being used for driving the second latch needles to operate according to a second curve, so that the loop-forming period of the second latch needles is twice that of the first latch needles. A double-face asynchronous knitting process is disclosed, comprising the following steps: S101, the first latch needles are loop-formed; S102, the first latch needles are loop-formed; S103, the second latch needles are loop-formed; and S104, the steps S101-S103 are circularly repeated. A knitted fabric is knitted by the double-face asynchronous warp knitting machine. The application has the advantages that special cloth surfaces with rich changes can be knitted.

The invention provides a warp knitting technology and a warp knitting machine for warp knitting mesh cloth for an automobile seat, and relates to the technical field of warp knitting machines, the warp knitting mesh cloth for the automobile seat comprises a rack, a knitting system, a guide bar transverse moving system and a transmission system.The guide bar transverse moving system comprises a transverse moving cam device, a swing lever, a transverse moving roller device, an indexing base and a guide bar plate, and the swing lever is rotatably installed on the rack; the transverse moving roller device is rotatably installed on the swing lever and rolls along the outer surface of the transverse moving cam device, the swing lever is in transmission connection with the guide bar plate, the transverse moving roller device comprises an inflation wheel, a pushing shaft, a hollow shaft and a plurality of supporting frames, the hollow shaft is sleeved with the inflation wheel in a sealed mode, the pushing shaft is rotatably installed in the hollow shaft, and the supporting frames are arranged on the hollow shaft. A torsion spring is arranged between the pushing shaft and the hollow shaft, a pushing rod pushing inclined face is arranged on the outer side of the pushing shaft, the supporting frames are installed on the hollow shaft in a sliding mode, the supporting frames are in transmission connection with the corresponding pushing inclined face of the hollow shaft, the supporting frames press the inner side of the inflation wheel, and weaving flaws are reduced.

The invention discloses a cooperative control optimization system for a warp knitting multi-axial weft laying movement process, and relates to the technical field of textile machinery manufacturing, the cooperative control optimization system comprises a weft laying execution unit, a sensing detection unit and a control system, the weft laying execution unit comprises a warp feeding device, a weft laying device and a traction device, and the sensing detection unit is used for detecting operation parameters of each execution unit. According to the cooperative control optimization system for the warp knitting multi-axial weft insertion movement process, global optimization control over the warp knitting multi-axial weft insertion process is achieved by constructing a cooperative control framework integrating a physical mechanism and data driving, and the multi-modal sensing unit is adopted for collecting operation data in real time; by simplifying parallel processing of a mechanism model and a digital twin virtual mapping system and combining a double-check mechanism of a dynamic optimization engine, a control instruction giving consideration to global performance optimization can be generated online, the contradiction between local optimization and global collaboration in a traditional control method is overcome, and the capacity of the system for coping with complex disturbance is improved.

The present invention relates to a color-changing breathable mesh fabric, which includes a color-changing mesh fabric layer and a breathable flexible layer, and the color-changing mesh fabric layer is fixedly connected to the breathable flexible layer. In the color-changing breathable mesh fabric of the present invention, a core-spun yarn is formed by winding three color-changing yarns around an elastic core wire. Compared with using powders with color-changing properties to coat the surface of the fabric, the excellent color-changing effect of the fabric is given through the color-changing property of the fiber itself, which has a durable and efficient performance and good extensibility. A production device for a color-changing breathable mesh fabric includes a double-needle bed warp knitting machine, two wire feeding machines, and two mesh fabric winding machines. In the production device for a color-changing breathable mesh fabric of the present invention, the old yarn and the new yarn are docked through a wiring component in cooperation with a winding component, so that when the yarn is insufficient during knitting, there is no need to stop the machine to connect the wire and waste time. Then, the winding component stably winds three color-changing yarns around the surface of the elastic core wire to form a core-spun yarn for knitting.

A warp-knitted integrated plush fabric and preparation method thereof are provided. The plush fabric includes a first plush layer, a second plush layer, and a connecting layer; wherein the first plush layer includes a front guide bar underlap layer formed by processing the front guide bar underlaps; the connecting layer, from the first plush layer to the second plush layer, successively includes a middle guide bar underlap layer, a back guide bar underlap layer, a middle guide bar loop layer, and a front guide bar loop layer, each layer being formed by interknitting the corresponding middle guide bar underlaps, back guide bar underlaps, middle guide bar loops, and front guide bar loops successively; the second plush layer includes a back guide bar loop layer, a back guide bar underlap layer, or a combination of both. The preparation method includes the steps of yarn warping, on-machine knitting, and dyeing and finishing.

The present invention discloses a miscolored jacquard warp knitted fabric and its weaving process. Among them, the weaving process of a miscolored jacquard warp knitted fabric includes weaving preparation and weaving. Through the above steps, on the observation surface of the obtained fabric, the visual effect presented by the first yarn can be observed within a certain angle range, and the visual effect presented by the second yarn can be observed within another angle range. Among them, the above fabric can observe different visual effects within different angle ranges, and its effect is given by weaving without the need for post-treatment processes. Therefore, the production cost of the fabric can be reduced.

The present application relates to the field of knitting technology, particularly to a yarn holder with movable yarn nozzle, texture structure, fabric, Flyknit fabric, and its weaving process, wherein the yarn holder comprises a yarn holder and several yarn nozzles. The yarn holder is provided with a first adjustment mechanism for controlling and adjusting the position and direction of the yarn holder. The position and direction of the movable yarn nozzle are adjusted through a second adjustment mechanism on the yarn holder, and at least one movable yarn nozzle is arranged on the yarn holder. The yarn holder according to the present application can be provided with fixed yarn nozzles and movable yarn nozzles. The movable yarn nozzle is controlled by a mechanical structure to move and swing within the active area on the yarn holder. The active area is divided into various types based on the layout of the yarn nozzles. Additionally, the layout structure of the fixed yarn nozzles and movable yarn nozzles is configured as a hierarchical structure, which facilitates the yarn nozzle to perform more weaving actions. The movable yarn nozzle can swing back and forth, so that the moving amplitude of the movable yarn nozzle is adjusted to be smaller than the swing amplitude. The movable yarn nozzle can be adjusted quickly to the weaving position, and the coordination effect is good.

This invention provides a warp knitting process and machine for warp knitting mesh fabric used in automobile seats, relating to the field of warp knitting machine technology. It comprises a frame, a weaving system, a guide bar traversing system, and a transmission system. The guide bar traversing system includes a traversing cam device, a swing lever, a traversing roller device, an indexing seat, and a guide bar plate. The swing lever is rotatably mounted on the frame, and the traversing roller device is rotatably mounted on the swing lever. The traversing roller device rolls along the outer surface of the traversing cam device. The swing lever is driven by the guide bar plate. The traversing roller device includes an inflatable wheel, a push shaft, a hollow shaft, and several support frames. The inflatable wheel is sealed outside the hollow shaft, and the push shaft is rotatably mounted inside the hollow shaft. A torsion spring is provided between the push shaft and the hollow shaft, and a push rod pushing inclined surface is provided on the outside of the push shaft. Each support frame is slidably mounted on the hollow shaft, and each support frame is driven by the corresponding push inclined surface of the hollow shaft. The support frames press against the inner side of the inflatable wheel, reducing weaving defects.

A spacer fabric has a first flat warp-knitted fabric layer having openings each formed by a respective plurality of stitches and a second flat warp-knitted fabric layer also having openings that are each formed by a respective plurality of stitches. The second warp-knitted fabric layer further has at least a first yarn system and a second yarn system and yarns of the first yarn system run in a production direction on exactly over respective stitch wale and yarns of the second yarn system extend over at least two adjacent stitch wales that run in the production direction. The openings are larger than one of the stitches or a space between two of the stitches. Spacer yarns interconnect the warp-knitted fabric layers.

The invention relates to a warp knitting machine for producing a knitted fabric (10), having a plurality of knitting tools (14) which are provided for interconnecting weft yarns (S) and warp yarns (K) in a loop-forming manner in a work area (12) by means of a knitting yarn (W), a cutting device (24) for cutting off the weft yarns (S) such that free weft yarn ends (SE) are formed on the respective weft yarns (S), and a yarn turning device (26) which is provided for turning the free weft yarn ends (SE) in the direction of the work area (12).

The invention relates to the technical field of textile mechanical equipment manufacturing, in particular to a multi-axial warp knitting machine capable of knitting carbon fibers and glass fibers, which comprises a warp knitting machine main machine, and further comprises a first weft laying assembly, a second weft laying assembly, a third weft laying assembly and a fourth weft laying assembly, the second weft laying assembly comprises a weft laying execution structure and a driving structure, the weft laying execution structure is used for laying a second kind of fiber yarn, and the driving structure is fixedly arranged on the rack of the warp knitting machine main machine and used for driving the weft laying execution structure to move between the working position and the standby position; according to the invention, one machine has two purposes without enlarging the occupied area of the equipment, the equipment sharing is facilitated, the production flexibility and the cost saving are realized, and the unique technical value of the integrated mixed material prefabricated body can be created.

The invention relates to the technical field of textile mechanical equipment manufacturing, in particular to a weft laying trolley device with a yarn pressing function, which comprises a rack and a weft laying trolley arranged on the rack, and further comprises a reciprocating motion mechanism arranged on the rack and used for driving the weft laying trolley to do reciprocating motion in the horizontal direction; the yarn pressing executing mechanism is arranged on the weft laying trolley and is used for executing a yarn pressing action and an avoiding action; the track guide mechanisms are arranged at the two ends of the rack, and when the weft laying trolley drives the yarn pressing executing mechanism to synchronously move to the two ends of the rack, the track guide mechanisms drive the yarn pressing executing mechanism to be switched from the avoiding action to the yarn pressing action, so that the yarn pressing action is achieved; the risk of fatigue fracture of the spring is eliminated, the reliability of long-term operation is ensured, the noise is reduced, the impact noise of spring resilience is avoided through mechanical forced driving, the working environment is improved, the structure is simplified, pneumatic elements and control systems are not needed, and the manufacturing cost and the maintenance cost are remarkably reduced.

The application relates to a variable-density full-width laid-in warp knitting fabric weaving device and relates to the field of textiles. The device comprises a laid-in unit and a variable-density unit. The variable-density unit comprises a conveying chain guide rail, a conveying chain link slidingly connected in the conveying chain guide rail, a laid-in yarn holder mounted on the conveying chain link, an electromagnetic density controller mounted on the inner wall of the conveying chain guide rail, an electromagnetic signal processing converter mounted on the bottom of the conveying chain link, an electromagnetic density contact foot mounted on one side of the electromagnetic signal processing converter, and a second electromagnetic speed changer electrically connected with the electromagnetic density controller. The laid-in unit comprises a laid-in trolley and laid-in yarns penetrating into guide holes of the laid-in trolley. The laid-in yarns are adjusted in density distance by the variable-density unit to form variable-density laid-in yarns. The device solves the technical problems and defects of the variable-density full-width laid-in warp knitting machine.

The present invention relates to the technical field of pile fabrics and the preparation thereof, and in particular to a warp-knitted integrated pile fabric and a preparation method therefor. The pile fabric comprises a first pile layer, a second pile layer, and a connecting layer located between the first pile layer and the pile layer, wherein the first pile layer comprises a front guide bar laid-in yarn layer formed by processing laid-in yarn of a front guide bar; the connecting layer sequentially comprises, from the first pile layer to the second pile layer, a middle guide bar laid-in yarn layer, a back guide bar laid-in yarn layer, a middle guide bar loop layer and a front guide bar loop layer, which are sequentially and respectively formed by interlacing laid-in yarns of a middle guide bar, laid-in yarns of a back guide bar, loops of the middle guide bar and loops of the front guide bar; and the second pile layer comprises a back guide bar loop layer, a back guide bar laid-in yarn layer, or a combination layer thereof. The preparation method comprises yarn warping, on-machine knitting, and dyeing and finishing. The present invention can form a variety of structures, and the types and colors of pile on the front and back sides can be independently selected and freely combined on the basis of a design and requirements, thereby forming a variety of style effects.

The present invention relates to the knitting technology field, and more particularly to a yarn guide table having a movable yarn nozzle, a patterned structure, a woven fabric, a flyknitted fabric, and a knitting process thereof. The yarn guide table includes a yarn guide table and multiple yarn nozzles. The yarn guide table is provided with a first adjustment mechanism for controlling and driving to adjust the position and orientation of the yarn guide table. The position and orientation of the movable yarn nozzle on the yarn guide table is adjusted by a second adjustment mechanism, and the yarn guide table is provided with at least one movable yarn nozzle. The yarn guide table according to the present invention may be provided with a fixed yarn nozzle and a movable yarn nozzle that cooperate with each other. The movable yarn nozzle is controlled by a mechanical structure to move and oscillate within a movable area of ​​the yarn guide table, and multiple types of movable areas are divided according to the layout of the yarn nozzle. Furthermore, the layout configuration of the fixed yarn nozzle and the movable yarn nozzle is designed in a layered structure, making it easier for the yarn nozzle to perform more knitting operations. The movable yarn nozzle can be swung back and forth, and since the movement range for adjusting the movable yarn nozzle is smaller than the swing range, the yarn nozzle can be adjusted by swinging back and forth so that it quickly displaces to the knitting position, resulting in an excellent cooperative effect.

The invention discloses a high-speed two-needle bar warp knitting machine which comprises a rack, a looping device, a guide bar device and a reciprocating driving device, the guide bar device comprises a plurality of front cradle mechanisms and a plurality of rear cradle mechanisms, and the front cradle mechanisms and the rear cradle mechanisms are oppositely distributed at the top of the rack at intervals. The front cradle mechanism and the plurality of rear cradle mechanisms swing back and forth around the cradle rotation center; the reciprocating driving device comprises a power driving part, a front vehicle main shaft driving part, a rear vehicle main shaft driving part, a front vehicle auxiliary shaft driving part and a rear vehicle auxiliary shaft driving part. The power driving part provides power for the front vehicle main shaft driving part, the rear vehicle main shaft driving part, the front vehicle auxiliary shaft driving part and the rear vehicle auxiliary shaft driving part to do reciprocating motion. Four-shaft transmission with the cams and the eccentric wheels matched with each other is adopted, the guide bar stroke is optimized, path diversification can be achieved, diversified knitting requirements are met, the knitting speed can be increased on the premise that stable operation is guaranteed, and production efficiency can be improved.

To provide an elastic warp knitted fabric which is knitted from elastic fibers and inelastic fibers and follows a body movement even during high-speed exercise.SOLUTION: There is provided an elastic warp knitted fabric which is knitted from elastic fibers and inelastic fibers, wherein the elastic fibers are made of a polyurethane elastomer whose polyol component is a copolyether polyol of tetrahydrofuran and 3-alkyltetrahydrofuran. The elastic fibers are knitted in a double stitch structure. The CF index of the elastic fiber satisfies the following formula (Formula 1):√d / Ls≤10.0...(Formula 1) (where d is the total fineness of the elastic fiber and Ls is the sinker loop length per course of the elastic fiber). The elastic warp knitted fabric has a hysteresis loss rate of 40% or less in the weft direction at 100% elongation of the knitted fabric.SELECTED DRAWING: None

Said endovascular prosthesis (1) is made up of a tubular knitted textile structure having, within the meshes of said knitted textile structure, at least one helical continuous weft thread (3) extending along the entire main dimension of the endovascular prosthesis. Said at least one thread (3) is formed of a shape memory alloy having previously undergone such a treatment, and in particular a thermomechanical treatment such that, at the temperature of the human body, the thread provides the structure with the tubular shape thereof by super-elastic or shape-memory effect.

The application relates to a constant-tension full-width backing weft knitting machine and a yarn feeding method, and relates to the field of warp knitting machines. The application is characterized in that a yarn feeding mechanism is arranged on the machine body of the full-width backing weft knitting machine, a yarn laying mechanism is arranged above the yarn feeding mechanism on the machine body of the full-width backing weft knitting machine, a tension monitoring module is arranged on the yarn laying mechanism, and a yarn supply mechanism is arranged above the yarn laying mechanism. In this case, the yarn is actively unwound from the disc head and runs between the yarn laying trolley without turning and twisting; the active yarn feeding is matched with the tension monitoring module, real-time tension data is fed back to the control system, the control system adjusts the running speed of the disc head according to the feedback result, the tension fluctuation problem is reduced, and the yarn is fed with constant tension; the yarn feeding device is not only suitable for feeding low-strength or low-elasticity yarns, but also suitable for realizing the full-width backing process of glass fibers, carbon fibers and the like in the yarn turning-free and zero-degree yarn feeding mode.

A warp knitting machine (1) is described which has a needle bed (2) carrying needles (3), a group of guide bars (4) movable in a deflection direction with weft bars (6) for laying weft threads, and a fabric take-off device (18). It is desired to be flexible when manufacturing a web by means of a warp knitting machine. To this end, at least one guide sinker (13) is arranged to project through a space between two needles (3), wherein the weft bar (5) supplies a weft thread on the guide sinker (13) when the weft bar (5) is moved between the two needles (3).