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780results about "Programme-controlled sewing machines" patented technology

Sewing piece counting method and device, electronic equipment and storage medium

The invention provides a sewing piece counting method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining event data generated when an employee operates a specific sewing process; obtaining a standard sewing template matched with the sewing process; the standard sewing template comprises standard process working hours, standard thread trimming times and a standard floating range; constructing a to-be-counted piece array based on the event data and the standard trimming times; each element in the to-be-counted piece array represents the actual working time required by a worker for sewing one piece of clothes; comparing actual working hours with standard piece counting working hours determined on the basis of the standard working procedure working hours and the standard floating range, and judging whether the staff completes sewing of one piece of clothes or not according to a comparison result; if yes, the number of sewn clothes is accumulated; otherwise, the number of sewn clothes is kept unchanged. According to the invention, automatic calculation of the garment sewing yield of employees can be realized, and the accuracy of the piece counting result is improved by optimizing the setting mode of the standard floating range.
Owner:JACK SEWING MASCH CO LTD

Robot and method for sewing an object

Embodiments of present disclosure relates to a robot and method for sewing an object. The robot includes a first robotic arm adapted to hold a needle, the needle carrying a length of a thread, a second robotic arm adapted to hold the needle, and a controller configured to move the first and second robotic arms to perform a plural of sewing operations so as to form a plural of stitches on the object A sewing operation includes moving the first robotic arm a first distance to cause the needle to penetrate a part of the object; and moving the second robotic arm to hold a penetration portion of the needle and pull the whole needle out of the object after the needle being released by the first robotic arm.
Owner:ABB (SCHWEIZ) AG

Automated heart valve manufacturing

An automated system that can be used for prosthetic heart valve manufacturing or suturing procedures. The system can include a first automated fixture that includes an articulating arm and a target device holder. The system can also include one or more additional automated fixtures, which can be configured as one or more suturing arms that include another articulating arm and a needle holder. The first automated fixture can be configured to rotate a target device held by the holder to allow the one or more additional automated fixtures to perform operations such as form sutures on the target device without intervention of a human operator. The system can include a display system configured to display status information of a suturing procedure.
Owner:EDWARDS LIFESCIENCES CORP

Sewing system

To reduce power consumption of a sewing machine.SOLUTION: A sewing system comprises: a plurality of sewing machines that operate in a normal mode and a low power waiting mode to wait with a lower power consumption than the normal mode; and a control part connected to the plurality of sewing machines through network. The control part acquires information relating to operating state from the plurality of sewing machines and transmits instruction to shift to the low power waiting mode to the sewing machine with the operating state satisfying a mode switching condition among the plurality of sewing machines.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Sewing machine and methods of using the same

A method for calibrating one or more optical sensors on a sewing machine, including collecting data of one or more features of one or more predefined regions associated with the sewing machine, processing the data through one or more neural networks, wherein the one or more neural networks detect and recognize the one or more features of the one or more predetermined regions from the data, calculating one or more accuracy indicators of the one or more features from the data as compared to one or more trained features from the one or more neural networks, comparing the value of the one or more accuracy indicators to one or more indicator thresholds and adjusting one or more parameters of one or more optical sensors based on the comparison between the one or more accuracy indicators and the one or more indicator thresholds.
Owner:SINGER SOURCING LTD LLC

Sewing machine and sewing method thereof

The invention provides a sewing machine and a sewing method thereof, and belongs to the technical field of sewing equipment. The problem that an existing sewing machine is insufficient in sewing quality is solved. The sewing machine comprises a base, a needle plate with a needle falling hole, a bottom shuttle located below the needle plate, a straight-rod-shaped transmission rod and a strip-shaped thread shifting rod, the transmission rod is located on the side portion of the bottom shuttle and movably connected to the base, the end, close to the bottom shuttle, of the transmission rod is fixedly connected with one end of the thread shifting rod, and the other end of the transmission rod is connected with a thread shifting driving assembly. Under the driving of the thread shifting driving assembly, the transmission rod can perform reciprocating motion in the axial direction and swing at the same time, so that the other end of the thread shifting rod performs circumferential circulating motion and can be located between the needle falling hole and the bottom shuttle. Reverse stitches can be avoided in the sewing process, the sewing machine has the advantage of being low in manufacturing cost, and the sewing quality is further improved.
Owner:ZHEJIANG BAOYU SEWING MACHINE

Systems, methods, and apparatuses for guiding a sewing operation of a sewing machine

A system and method, for guiding a sewing operation for a sewing machine, are provided herein. One of one or more stitch objects having stitch data associated therewith may be selected. Each of the one or more stitch objects are defined by a geometric pattern. The stitch data of the one of the one or more stitch objects is analyzed to identify one or more lines forming the geometric pattern. At least a portion of a sewing material is sewn, onto the workpiece with the needle, in a direction defined by a first of the one or more lines forming the geometric pattern. A primary light source projects a first of one or more guidelines onto the workpiece. The first of the one or more guidelines corresponds to a second of the one or more lines forming the geometric pattern.
Owner:SINGER SOURCING LTD LLC

Suit cloth sewing method under structural hierarchy analysis

The invention provides a western-style clothes cloth sewing method under structural hierarchy analysis, and relates to the technical field of clothes manufacturing processes, and the western-style clothes cloth sewing method comprises the following steps: cutting and overlapping according to a preset sewing scheme to form an initial structure; performing three-dimensional simulation by using a 3D visual collector to generate an edge position set; planning a stitching path; a self-adaptive tension control system is used for monitoring tension in real time, and the cloth feeding speed and stitch force of the sewing machine are adjusted in a self-adaptive mode; and performing edge sewing on the initial structure through the sewing system according to the sewing path, the cloth feeding speed and the stitch force. The technical problem that in the prior art, due to the fact that elastic fabric is prone to tensile deformation in the sewing process and sewing lines are not uniform, the sewing position deviates can be solved, tailoring is carried out through the preset scheme, three-dimensional simulation is carried out through the 3D visual collector, the edge position is accurately determined, the accuracy of the sewing position is improved, and the sewing efficiency is improved. Therefore, sewing quality and efficiency are improved.
Owner:JIANGSU HUBAO GROUP CO LTD

Manipulator sewing method and device, sewing equipment, computer readable storage medium and computer program product

PendingCN119115961AMovement Speed ​​AdjustmentMeet stitch length requirementsProgramme-controlled sewing machinesProgramme-controlled manipulatorRobot handEquipment computers
The invention relates to a manipulator sewing method and device, sewing equipment, a computer readable storage medium and a computer program product, and relates to the technical field of sewing. The method comprises the steps that based on a sewing drawing of a to-be-sewn cutting piece, moving track information of a mechanical arm in the sewing process of the to-be-sewn cutting piece is determined; the to-be-sewn cutting piece is sewn through the sewing machine, and the manipulator is controlled to press and move the to-be-sewn cutting piece in the sewing process of the to-be-sewn cutting piece based on the moving track information; the moving speed of the mechanical arm in the sewing process of the to-be-sewn cutting piece is obtained; based on the moving speed and a preset stitch length corresponding to the to-be-sewn cutting piece, the sewing speed of the sewing machine is adjusted, so that the actual stitch length on the to-be-sewn cutting piece is consistent with the preset stitch length. By adopting the method, the sewing qualification rate can be improved.
Owner:GUANGDONG ESQUEL TEXTILES CO LTD

A single-acting blade anti-bird nest wire-cutting mechanism and its control method

This invention provides a single-action anti-bird nest thread-cutting mechanism and its control method. The single-action anti-bird nest thread-cutting mechanism includes a fixed blade, a rotatable movable blade, a thread-cutting drive source, and a thread-cutting drive assembly. The fixed blade has a fixed blade edge. The thread-cutting drive source is connected to the movable blade via the thread-cutting drive assembly, driving the movable blade to rotate towards or away from the fixed blade. The movable blade has a starting thread hook groove and a separating thread hook groove. The starting thread hook groove allows the sewing machine needle to pass through. The movable blade has a moving blade edge on its surface facing the fixed blade. The starting thread hook groove and the separating thread hook groove are distributed on the same side of the moving blade edge. This application uses the same thread-cutting drive source and the same set of movable and fixed blades to achieve the purpose of preventing bird nests during the starting thread cutting and automatic thread cutting after sewing, effectively avoiding thread breakage during the starting thread and achieving a stable effect of normal starting thread without bird nest clumps.
Owner:JACK SEWING MASCH CO LTD

Middle presser foot mechanism control method and middle presser foot mechanism

The invention discloses a medium presser foot mechanism control method and a medium presser foot mechanism, and the method comprises the following steps: a control unit controls the rotation of a main shaft motor, a medium presser foot motor and a feeding motor according to a target pattern parameter, and obtains a target sewing stitch; the control unit obtains a given material pressing angle range from the expected material pressing angle range according to the cloth thickness and the sewing speed; the control unit obtains a given middle presser foot stroke from the expected middle presser foot stroke according to the cloth thickness and the middle presser foot height; according to the middle presser foot mechanism, a motor drives a crank, fisheye connectors A and B, a connecting rod, a pressing rod guide frame and other assemblies, and follow-up vertical movement of a middle presser foot is achieved. A motor is fixed through a support, an output shaft is connected with a driving crank, and the driving crank drives a fisheye connector A to be connected with a connecting rod and transmits motion to a pressing rod and a middle pressing foot. The pressing rod guide frame plays a guiding role and limits rotation of the pressing rod. The induction plate is arranged on the driving crank, when the middle presser foot is lifted to the highest point, the sensor can sense the induction plate, and position feedback is achieved.
Owner:JACK SEWING MASCH CO LTD

Seam starting control method based on presser foot lifting feeding

The invention provides a sewing starting control method based on presser foot lifting feeding. The sewing starting control method comprises the following steps that an electric control unit, a presser foot rod, a presser foot and a presser foot lifting mechanism are arranged in a sewing machine; after the sewing material to be sewn is placed, the presser foot is put down, and the electric control unit receives a thick material sewing starting signal; before a feeding tooth sinks downwards into a needle plate during sewing of a first needle, an electric control unit controls a presser foot lifting driving source to act, the presser foot lifting driving source drives a presser foot rod and a presser foot to move upwards through a presser foot lifting transmission unit, the presser foot is lifted to the sewing target height, and the upwarp angle of the presser foot relative to the horizontal plane is reduced; at the moment, the presser foot is still pressed and attached to the sewing starting part of the to-be-sewn sewing material, and the horizontal component force of the pressure applied to the sewing starting part of the to-be-sewn sewing material by the presser foot is not larger than the maximum static friction force between the sewing starting part of the to-be-sewn sewing material and the sewing machine needle plate; in this way, after the feeding teeth sink downwards into the needle plate in the first stitch starting process, the undesirable phenomenon that the sewing starting part of the sewing material to be sewn is pushed away by the presser foot is avoided, and sewing starting material pushing is effectively avoided.
Owner:JACK SEWING MASCH CO LTD

Automatic sewing and cutting management system for underwear processing

The invention relates to the technical field of intelligent manufacturing and management of textiles and garments, and discloses an automatic sewing and cutting management system for underwear processing. The system comprises a central control module, a material conveying and positioning sub-module, a machine vision acquisition sub-module, a multi-axis linkage sewing mechanical arm sub-module and a cutting execution sub-module. According to the system, image data of raw materials and semi-finished products are collected through a machine vision collection sub-module before sewing and after sewing respectively, the initial deformation quantity and the secondary deformation quantity are calculated through a central control module, then a dynamic sewing path and an actual cutting path are generated, and a mechanical arm is controlled to execute self-adaptive sewing and accurate cutting; a sensing-decision-execution closed-loop intelligent control strategy is adopted, the problem of deformation accumulation of the high-elasticity fabric in the processing process is effectively solved, the precision and efficiency of underwear production and the material utilization rate are further improved, and small-batch multi-variety flexible automatic production is achieved.
Owner:FOSHAN FEIDAIER CLOTHING CO LTD

Sewing management system and sewing management method

To properly inspect a sewing object.SOLUTION: A sewing management system comprises: a plurality of sewing steps to sew sewing objects using sewing machines; a correlation data storage part to store correlation data indicating relation of inspection levels with inspection steps of the sewing objects executed after the sewing steps; and an output part to make an output device output the inspection levels according to the inspection steps.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Sewing machine and methods of using the same

An exemplary sewing machine includes a sewing head, a needle bar holding a needle, a motor for moving the needle during a sewing operation, a user interface, a data gathering device, a data storage device, and a processor. The data gathering device gathers data related to at least one of the sewing machine, an environment surrounding the sewing machine, a sewing material, the sewing operation performed by the sewing machine, and one or more interactions of a user with the sewing machine. The data storage device stores gathered data and data related to a neural network. The processor processes the gathered data through the neural network to generate processed data. Based on the processed data, the processor controls at least one of the user interface, the data storage device, and the motor.
Owner:SINGER SOURCING LTD LLC

Intelligent sewing equipment

The utility model discloses intelligent sewing equipment which is characterized in that a first manipulator of the intelligent sewing equipment grabs and moves a first cloth piece from a first feeding assembly to a first detection plane, and then grabs and moves a second cloth piece from a second feeding assembly to a second detection plane; after outer contour positioning is conducted on a first cloth piece and a second cloth piece through a first visual detector, positioning information of the first cloth piece and the second cloth piece is obtained, a first moving track for controlling a first mechanical arm to move is generated according to the positioning information, and the first mechanical arm grabs and moves the first cloth piece to a second detection plane based on the first moving track; then the first sewing assembly sews the first cloth piece and the second cloth piece which are stacked into a whole, and a first sheet is formed. According to the intelligent sewing equipment, the labor cost is reduced, the sewing efficiency is improved, and the problem of cloth piece stacking is solved.
Owner:ANTA (CHINA) CO LTD

Sewing management system and sewing management method

To provide data for analyzing causes of defects of a sewing object.SOLUTION: A sewing management system comprises: an input data acquisition part to acquire input data indicating defects of a plurality of sewing objects sewn by a plurality of operators using a plurality of sewing machines from an input device; a processing part to calculate defect rate for each of a plurality of evaluation items relating to sewing based on the input data; and an output part to output the defect rate.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Sewing management system and sewing management method

To provide data for analyzing the cause of a defect of a sewn object.SOLUTION: A sewing management system comprises: a defect cause storage unit to store a plurality of defect items, which are items on defect causes for sewn objects sewn by operators using sewing machines; an input data acquisition unit to acquire input data indicating defect causes from an input device; a processing unit to classify the input data by defect item; and an output unit to output the classified input data.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Sewing management system and sewing management method

To properly make a production plan of a sewn product.SOLUTION: A sewing management system includes: a normal operation time calculation unit that calculates normal operation time indicating time required for a normal operation in which an operator sews a sewing target by using a sewing machine; a correction operation time calculation unit that calculates correction operation time indicating time required for a correction operation in which the operator corrects the sewing target after the normal operation by using the sewing machine; and an output unit that outputs the normal operation time and the correction operation time.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Presser foot slow descending control method and system, electronic equipment and sewing machine

The invention provides a presser foot slow descending control method and system, electronic equipment and a sewing machine. The method comprises the steps of obtaining target data; the target data comprises a target position, a current position and a preset slow descending position of the presser foot; the preset slow descending position is a preset pause position of the presser foot; comparing the target position with the preset slow descent position to obtain a comparison result; if the comparison result shows that slow descending is needed, descending the presser foot from the current position to the target position according to a preset slow descending strategy; and if the comparison result shows that slow descending is not needed, descending the presser foot from the current position to the target position according to a closed-loop control algorithm. The descending speed of the presser foot can be effectively reduced aiming at the electromagnet lifting presser foot, and noise is reduced. Meanwhile, the application range is wide, and the device is suitable for different electromagnet presser foot lifting machine types, such as flat sewing and overlock sewing.
Owner:ZHEJIANG ZOBOW MECHANICAL & ELECTRICAL TECH

System and method for monitoring real-time working state of intelligent sewing machine

The invention discloses a system and a method for monitoring the real-time working state of an intelligent sewing machine, and relates to the technical field of sewing machine running state monitoring. By comparing an actual ratio with a task preset ratio, a generated synchronous error set can accurately reflect the stability state of a feeding action in a sewing task; and further extracted deviation level parameters, fluctuation amplitude parameters and fluctuation trend characteristics are counted through a sliding window, so that the numerical trend of synchronous deviation between a feeding system and a needle bar system can be dynamically quantified, and subsequent trend modeling of fluctuation behaviors can be supported. The stitch density change score obtained through calculation can evaluate the stitch density stability of the current sewing task section in real time, abnormal section recognition and dynamic marking are carried out in combination with density tolerance threshold parameters, and a finally formed abnormal marking result set enables the system to have traceable, quantifiable and linkable density abnormal state sensing capacity.
Owner:YUANJIANG JIASHENG CLOTHING CO LTD

Self-adaptive intelligent control method for template machine

The invention discloses a template machine self-adaptive intelligent control method, and relates to the technical field of template machine control, and the method comprises the steps: carrying out the correction calculation of the coordinates of to-be-sewn track points of a preset sewing track of to-be-sewn clothes in each sub-region in combination with the deviation distance of each sub-region, obtaining the correction point coordinates of each to-be-sewn track point, and obtaining the correction point coordinates of each to-be-sewn track point; the deviation rectifying track is input into a template sewing machine control module, the template sewing machine is made to conduct sewing operation according to the deviation rectifying track, the deviation conditions of the template sewing machine in all the sub-areas of the working table top are accurately analyzed, and targeted deviation rectifying is conducted on the preset sewing track of the current to-be-sewn clothes according to the deviation conditions; the generated deviation rectifying track is transmitted to a control module of the template sewing machine, so that the template sewing machine performs sewing according to the deviation rectifying track, the sewing accuracy and stability of the template sewing machine are improved, and sewing deviation caused by the fact that the preset sewing track is not consistent with the actual sewing condition is reduced.
Owner:DONGGUAN STEADY CONTROL AUTOMATION TECH CO LTD

Method and device for generating sewing processing graphic file through character description

The invention relates to a method and a device for generating a sewing processing graphic file by text description, mainly based on a ComfyUI server, a Stable Diffusion model and a ControlNet model are combined for use, a descriptor is converted into a picture, and a picture contour is extracted to generate a stitch path. And the stitch server optimizes a needle point path through an algorithm, and generates a binary data packet containing coordinates, a connection sequence and a null shift instruction. And after receiving the data packet, the sewing machine equipment decodes the data packet, reconstructs a path and performs processing operation, and finally sews a pattern corresponding to the descriptor on the material. According to the method, full-process automation from characters to file processing is achieved, the design efficiency is remarkably improved, the use threshold is lowered, and the method is suitable for the fields of personalized design, intelligent manufacturing and the like and has wide application value and innovative significance.
Owner:SHENZHEN XINGHUO CNC TECHNOLOGY CO LTD

Sewing control method of computer sewing machine

The invention provides a sewing control method of a computer sewing machine, and belongs to the technical field of sewing machines. The problem that an existing computer sewing machine is insufficient in sewing quality is solved. The sewing control method comprises the following steps that A, a thread shifting device with a thread shifting rod is arranged on the side portion of a bottom shuttle; b, the control system judges and records a reverse stitch needle point; c, sewing a first needle; d, the feeding device drives the sewing material to move to a next-needle sewing position, and according to whether the needle point of the current sewing position is a reverse stitch needle point or not, the following actions are executed: if yes, a thread shifting rod is controlled to move and act on a bottom thread between a bottom shuttle and a needle plate, so that one part of the bottom thread crosses an axial lead where a machine needle is located, and the other part of the bottom thread crosses an axial lead where the machine needle is located; then the machine needle brings the upper thread to the position below the needle plate, the thread shifting rod is separated from the bottom thread, and the upper thread and the bottom thread are interwoven to form a stitch; if not, the machine needle moves downwards to bring the upper thread to the position below the needle plate, and the upper thread and the bottom thread are interwoven to form a stitch. The sewing machine has the advantages of high sewing quality and low manufacturing cost.
Owner:ZHEJIANG BAOYU SEWING MACHINE

Automatic sleeve stitching method, automatic sleeve stitching machine and readable storage medium

The invention discloses an automatic sleeve stitching method, an automatic sleeve stitching machine and a readable storage medium, and relates to the technical field of textile sewing. The automatic sleeve stitching method comprises the following steps: setting a sewing pattern, judging a sewing type, if the sewing type is a cylindrical sleeve, executing a cylindrical sleeve process, and if the sewing type is an unfolded sleeve, executing an unfolded sleeve process; the cylindrical sleeve process comprises a cylindrical sleeve sewing sub-process and a cylindrical sleeve edge aligning sub-process, the cylindrical sleeve edge aligning sub-process and the cylindrical sleeve sewing sub-process are executed at the same time, and the cylindrical sleeve edge aligning sub-process comprises the steps that two pieces of cloth are separated, and the edges of the two pieces of cloth are detected and aligned; repeating the previous step until the segmentation point of the last segment is sewn, pausing sewing, and executing the next step; the two pieces of cloth are attached, and the edges of the two pieces of cloth are detected and aligned at the same time; and repeating the previous step until the sewing of the cylindrical sleeve is completed. According to the automatic sleeve stitching method, sewing of the unfolded sleeve and the cylindrical sleeve can be completed, and the automation degree and the intelligence degree of sleeve stitching are improved.
Owner:BULLMER ELECTROMECHANICAL TECH

Sewing management system and sewing management method

To provide data for analyzing causes of defects of a sewing object.SOLUTION: A sewing management system comprises: an input data acquisition part to acquire input data indicating a defect part of each of a plurality of sewing objects having the same design sewn by operators using sewing machines from an input device; and an output part to make a display device display an image of the sewing object by superimposing a first symbol indicating the defect part on the image of the sewing object.SELECTED DRAWING: Figure 1
Owner:JUKI CORP

Sewing efficiency detection method and system based on sewing machine worker action analysis, medium and terminal

The invention provides a sewing efficiency detection method and system based on sewing machine worker action analysis, a medium and a terminal. The method comprises the following steps of obtaining a motor starting time point and a motor stopping time point of sewing equipment; obtaining a turner sewing image of a time period between the adjacent motor stop time point and the motor start time point; based on the sewing image of the turner, acquiring the action duration of each sewing action executed by the turner, wherein the sewing actions comprise cutting piece taking, cutting piece sewing, cutting piece arranging and cutting piece placing; and obtaining the sewing efficiency of the lathe worker based on the sewing action and the action duration. According to the sewing efficiency detection method and system based on sewing turner action analysis, the medium and the terminal, the turner sewing efficiency is detected based on action recognition of the sewing turner and action data of the sewing machine, and the method and the system are rapid and efficient.
Owner:JACK SEWING MASCH CO LTD

Scanning type sewing machine capable of automatically switching programs

The utility model provides a scanning type sewing machine capable of automatically switching programs, and relates to the technical field of sewing equipment. Comprising a sewing main body suitable for sewing a workpiece and a control system, a clamping frame is arranged on the sewing main body, a scanner is installed on the clamping frame, the scanner is suitable for scanning a bar code which is arranged on the workpiece and carries program information, and the scanner is connected with the control system. And when the bar code on the workpiece is scanned, the control system drives the sewing main body to automatically reset and switch to a program corresponding to the bar code. Through the scheme, the working efficiency of the sewing machine can be improved, and human errors are reduced.
Owner:HMT XIAMEN NEW TECHN MATERIALS

Thread trimming control method, thread trimming control system and sewing machine

The invention relates to a thread trimming control method, a thread trimming control system and a sewing machine, the thread trimming control method comprises the following steps: arranging a first sensor, a second sensor and a third sensor which are arranged in sequence, the distance between the first sensor, the second sensor and the third sensor is L1, and the distance between the second sensor and the third sensor is L2; when the fabric reaches the second sensor from the first sensor, the controller calculates that the current stitch length of the sewing machine is O1 = L1 / N, and N is the number of turns of rotation of the sewing machine; the controller calculates the number of turns of rotation required by the sewing machine within the distance of L2, M = L2 / O1 = m + n, and m is an integer, 0 lt; nlt; 1; when ngt; k, when the fabric passes through the second sensor, the controller adjusts the stitch length of the sewing machine through the execution motor and the stitch length adjusting mechanism, so that the adjusted stitch length O2 meets the condition that L2 / O2 = x + y, and x is an integer, 0 lt; yt; Yt; 1, y < = k, 0.4 < = k < = 0.6; when n is smaller than or equal to k, the sewing machine continues sewing according to the stitch length of O1. According to the thread trimming control method, the thread trimming control system and the sewing machine, the problem that under the existing large-stitch-length sewing working condition, cloth and thread residues are very prone to being scattered is solved.
Owner:JACK SEWING MASCH CO LTD