Abstract: A tubular double-needle bed warp knitting machine includes a let-off mechanism, a knitting element, and a take-up and batching device. The knitting element includes guide needles in a circular pattern, two circular needle beds arranged internally and externally, knitting needles in a circular pattern along the internal and external needle beds, and knitting components that move in coordination with the knitting needles. Some of the guide needles form loops on the internal and external circular needle beds, while other guide needles alternately form loops on the internal and external circular needle beds to connect sections of the two fabric pieces to create a three-dimensional tubular fabric. The formed three-dimensional tubular fabric exits the knitting area through the traction of the take-up and batching device.

Abstract: A flat-knitted three-dimensional fabric with an internal support structure, and the fabric is consisted of an upper surface layer, a lower surface layer, and a support structure yarn in a middle, wherein the upper surface layer and the lower surface layer comprise alternate-knitted single-sided stitches and fully-knitted single-sided stitches; the upper surface layer and the lower surface layer are connected by means of tuck knitting of the support structure yarn in the middle to form the integrally formed three-dimensional fabric with an internal support structure; and the alternate-knitted single-sided stitches are correspond to tuck loops formed by the support structure yarn and are used to lock the tuck loops formed by the support structure yarn in the middle, such that the support structure yarn will not puncture the surfaces of the fabric when the fabric is pressed.

Abstract: A yarn tension control method includes a bobbin ascending or descending on sliding rails on a yarn carrier module. When the pattern is designed, the ascending or descending speed, time and distance of the fixing frame is calculated directly according to a yarn carrier stop, the quantity of redundant yarn and the speed of the carriage. When the carriage contacts a yarn carrier, a contact sensor feeds a signal back to the carriage, a signal emitter emits an instruction, and when a signal receiver receives the instruction, the fixing frame is controlled to ascend along the sliding rails. When the carriage drives the yarn carrier to enter a knitting area, needles are elected by a needle selection electromagnetic valve, knitting motion information is fed back to the carriage, the signal emitter emits an instruction, and when the signal receiver receives the instruction, the fixing frame is controlled to descend.

Abstract: A flat-knitted three-dimensional fabric with an internal support structure, and the fabric is consisted of an upper surface layer, a lower surface layer, and a support structure yarn in a middle, wherein the upper surface layer and the lower surface layer comprise alternate-knitted single-sided stitches and fully-knitted single-sided stitches; the upper surface layer and the lower surface layer are connected by means of tuck knitting of the support structure yarn in the middle to form the integrally formed three-dimensional fabric with an internal support structure; and the alternate-knitted single-sided stitches are correspond to tuck loops formed by the support structure yarn and are used to lock the tuck loops formed by the support structure yarn in the middle, such that the support structure yarn will not puncture the surfaces of the fabric when the fabric is pressed.

Abstract: A knitting method for a warp knitted jacquard three-color figured fabric comprising: (1) defining the basic traverse information of a jacquard bar in non-offset state; (2) A-color pattern area is composed of jacquard pattern texture and jacquard pattern needle supplement texture; (3) B-color pattern area is composed of jacquard pattern texture and jacquard pattern needle supplement texture; (4) a mesh structure of C-color ground net area is composed of jacquard mesh texture and ground bar texture; (5) a pattern contour area is formed by using two jacquard bars to bar the outer contour of the A-color pattern area or the outer contour of the B-color pattern area; (6) the elastic area is composed of a ground bar texture, and a ground bar is used to knit the elastic area texture.

Abstract: The disclosure discloses a control method of pattern loading for a high speed double needle bar warp knitting machine. Through disposing two or more than two high speed FIFO pattern data cache regions on a shog controller, a data read-write conversion function of each cache region continuously and automatically is respectively realized. Needle collision caused by guide bar shogging during pattern loading is avoided. Pattern loading steps of the double needle bar warp knitting machine are simplified; the work intensity is reduced; and the work reliability is improved.

Abstract: The disclosure discloses an online detection method of circular weft knitting stripe defects based on a gray gradient method, and belongs to the technical field of textile product detection. The method provides a defect detection and positioning method based on the gray gradient method. Before the detection on a new product, only a model needs to be trained to obtain stripe defect feature images with different stitch types and different stitch densities, and the detection is directly performed in a subsequent process. Defects can be fast and accurately recognized, and a cam position causing the stripe defects can be calculated according to a quantity of shot images between the feature images and a marked image, courses in which marks in the marked image are located, courses in which defects in a defect image are located, and machine operation parameters. Moreover, a defect detection device required by the disclosure can be modified on an original circular knitting machine, so the detection cost is reduced.

Abstract: The disclosure discloses an online detection method of circular weft knitting stripe defects based on a gray gradient method, and belongs to the technical field of textile product detection. The method provides a defect detection and positioning method based on the gray gradient method. Before the detection on a new product, only a model needs to be trained to obtain stripe defect feature images with different stitch types and different stitch densities, and the detection is directly performed in a subsequent process. Defects can be fast and accurately recognized, and a cam position causing the stripe defects can be calculated according to a quantity of shot images between the feature images and a marked image, courses in which marks in the marked image are located, courses in which defects in a defect image are located, and machine operation parameters. Moreover, a defect detection device required by the disclosure can be modified on an original circular knitting machine, so the detection cost is reduced.

Abstract: The disclosure discloses a method of whole garment knitting in horizontal direction along the back center, and belongs to the technical field of knitted fabrics. The method can be used for directly knitting an integrally shaped left piece and right piece, wherein a sleeve, a front body, a back body, a front placket, a lapel and a lapel collar of the left piece or the right piece are all integrally shaped, and can be directly sewn at back center lines and collar center lines through a looper to form a fully-shaped upper garment including plackets and a collar portion. According to the solution, the knitting process is simple, manual or single yarn lifting sewing is not needed, and the garment knitting efficiency is improved.

Abstract: The disclosure discloses a control method of pattern loading for a high speed double needle bar warp knitting machine, and belongs to the technical field of warp knitting equipment. Through disposing two or more than two high speed FIFO pattern data cache regions on a shog controller, a data read-write conversion function of each cache region continuously and automatically is respectively realized. According to a current position of each guide bar, a target position of current shogging of an original pattern and a starting course position of a novel pattern, a control system of the double needle bar warp knitting machine automatically calculates a shogging displacement required by each guide bar in a pattern loading process, and sends out instruction information to a shog driving execution unit corresponding to each guide bar.

Abstract: The disclosure discloses a method of whole garment knitting in horizontal direction along the back center, and belongs to the technical field of knitted fabrics. The method can be used for directly knitting an integrally shaped left piece and right piece, wherein a sleeve, a front body, a back body, a front placket, a lapel and a lapel collar of the left piece or the right piece are all integrally shaped, and can be directly sewn at back center lines and collar center lines through a looper to form a fully-shaped upper garment including plackets and a collar portion. According to the solution, the knitting process is simple, manual or single yarn lifting sewing is not needed, and the garment knitting efficiency is improved.

Abstract: A knitting method for a warp knitted jacquard three-color figured fabric comprising: (1) defining the basic traverse information of a jacquard bar in non-offset state; (2) A-color pattern area is composed of jacquard pattern texture and jacquard pattern needle supplement texture; (3) B-color pattern area is composed of jacquard pattern texture and jacquard pattern needle supplement texture; (4) a mesh structure of C-color ground net area is composed of jacquard mesh texture and ground bar texture; (5) a pattern contour area is formed by using two jacquard bars to bar the outer contour of the A-color pattern area or the outer contour of the B-color pattern area; (6) the elastic area is composed of a ground bar texture, and a ground bar is used to knit the elastic area texture.

Abstract: A jacquard warp tensioning device for a warp knitting machine, comprising a pair of side panels (1) disposed on two sides of the machine casing, a warp beam (2) positioned at the upper portions of the side panels (1), a plurality of warp guide rods (3, 4, 5) disposed at positions lower than that of the warp beam (2) and a flat spring warp dividing device (16), wherein an upper tension balancing device (6) and a lower tension balancing device (11) are disposed between the warp beam (2) and the warp guide rods (3, 4, 5), the upper tension balancing device (6) comprising an upper rotating shaft (7) with two ends thereof disposed on the side panels (1), an upper servo motor (8) disposed at one end of the upper rotating shaft (7) and an upper tensioning rod (9) fixedly disposed on the upper rotating shaft (7) by means of a plurality of upper connecting rods (10), the lower tension balancing device (11) comprising a lower rotating shaft (12) with two ends thereof disposed on the side panels (1), a lower servo motor

Abstract: A knitting method and an apparatus for a cylindrical biaxial weft-knitted three-dimensional knitted structure. The biaxial three-dimensional knitted structure comprises two weft plain stitch structures (7, 7?), a group of spacer yarns (416), two groups of weft inserting yarns (415, 415?) and a group of warp inserting yarns (43), wherein the two groups of weft inserting yarns are used for selective weft inserting on a needle dial (11) or a needle cylinder (13), the warp inserting yarns are positioned between the two groups of weft inserting yarns, the two weft plain stitch structures are connected with each other by the group of spacer yarns, for jointly clamping the weft inserting yarns and the warp inserting yarns, in order to form a biaxial weft-knitted three-dimensional knitted structure.

Abstract: A method for knitting fall-plate structures on warp-knitting machines, including: the fall-plate guide bar makes an overlap when the groove needle bar is going upward and the previous loop is held by the sinker bar; the groove needle bar and the tongue bar simultaneously go downward but these two items are kept not closed, and the overlapped yarn and the previous loop are slipping inside together; the groove needle bar go upward again while both the fall-plate yarn and the previous loop are held by the sinker bar, making the two yarns slip out of the groove needle. Meanwhile, a ground guide bar makes an overlap, finishing lapping. When moving the groove needle bar downward for a second time, retreating the old loop and the pressed yarn; forming a new loop, by the ground yarn; placing the pressed yarn under the new loop; and forming the fall-plate structures.

Abstract: A jacquard warp tensioning device for a warp knitting machine, comprising a pair of side panels (1) disposed on two sides of the machine casing, a warp beam (2) positioned at the upper portions of the side panels (1), a plurality of warp guide rods (3, 4, 5) disposed at positions lower than that of the warp beam (2) and a flat spring warp dividing device (16), wherein an upper tension balancing device (6) and a lower tension balancing device (11) are disposed between the warp beam (2) and the warp guide rods (3, 4, 5), the upper tension balancing device (6) comprising an upper rotating shaft (7) with two ends thereof disposed on the side panels (1), an upper servo motor (8) disposed at one end of the upper rotating shaft (7) and an upper tensioning rod (9) fixedly disposed on the upper rotating shaft (7) by means of a plurality of upper connecting rods (10), the lower tension balancing device (11) comprising a lower rotating shaft (12) with two ends thereof disposed on the side panels (1), a lower servo motor

Abstract: A knitting method and an apparatus for a cylindrical biaxial weft-knitted three-dimensional knitted structure. The biaxial three-dimensional knitted structure comprises two weft plain stitch structures (7, 7?), a group of spacer yarns (416), two groups of weft inserting yarns (415, 415?) and a group of warp inserting yarns (43), wherein the two groups of weft inserting yarns are used for selective weft inserting on a needle dial (11) or a needle cylinder (13), the warp inserting yarns are positioned between the two groups of weft inserting yarns, the two weft plain stitch structures are connected with each other by the group of spacer yarns, for jointly clamping the weft inserting yarns and the warp inserting yarns, in order to form a biaxial weft-knitted three-dimensional knitted structure.

Abstract: A method for forming yarn pressing weave by using a groove pin warp knitting machine based on servo driving. The method is performed on a Raschel groove pin warp knitting machine, and specifically comprises: a. enabling a groove pin body (3) to rise for a first time, utilizing a sinker (5) to press against an old coil, utilizing a yarn pressing guide comb (1) to perform traverse movement before the pin, and finishing yarn laying; b. enabling the groove pin body (3) and a groove pin core (4) to descend, enabling the groove pin body (3) to be kept open, and enabling pressed yarn (6) and the old coil not to undergo ring sleeving and to together move into a pin hook; c.