36results about "Thread-laying mechanisms" patented technology

The utility model relates to a sewing machine, which comprises a sewing machine main body assembly, a sewing machine main body structure and a sewing machine main body assembly, the sewing thread routing assembly comprises a thread trapper structure, a counter structure and a thread drawing device structure, and the thread trapper structure, the counter structure and the thread drawing device structure are all arranged on the sewing machine main body structure. According to the technical scheme, the problems that in the prior art, thread ends of the thread trimming and bird nest preventing technology of a sewing machine are different in length, and the control precision of the thread ends is not enough are effectively solved.

The utility model relates to the technical field of bartacking machines, in particular to a combined driving mechanism of a bartacking machine and the bartacking machine. Comprising a thread sweeping mechanism used for executing a thread sweeping action; the presser foot lifting mechanism is used for executing a presser foot lifting action; the thread trimming mechanism is used for executing a thread trimming action; the driving motor is used for driving the thread sweeping mechanism, the presser foot lifting mechanism and the thread trimming mechanism to work; the thread sweeping mechanism comprises a thread sweeping action assembly, a thread sweeping mechanism and a thread sweeping mechanism, the transmission arm is used for being connected with the driving motor; the thread sweeping connecting rod is used for connecting the thread sweeping action assembly and the transmission arm, so that the driving motor can drive the thread sweeping action assembly to execute the thread sweeping action; the thread sweeping mechanism further comprises an independent driving assembly, and the independent driving assembly can independently drive the thread sweeping mechanism to work.

The present invention relates to a double-needle two-color pattern machine, including a workbench, a fixed frame, which is arranged above the workbench and fixed relatively to the workbench; a machine base, which is arranged on the fixed frame, and the first and second machine needles arranged vertically are installed on the machine base, and the machine base is arranged to rotate around its own axis so that the first machine needle or the second machine needle corresponds to the workstation; a clamping mechanism, which has two groups of clamping components respectively used to clamp or release the surface thread on the first machine needle and the surface thread on the second machine needle; a driving component, the power output end of which is connected to the clamping mechanism drive, so that the two groups of clamping components correspond to the workstation one by one; a hooking plate, which corresponds to the workstation and is arranged to be able to transport the surface thread at the workstation to the corresponding clamping component. The entire operation process is more convenient, fast, time-saving and labor-saving, and reduces costs.

The utility model belongs to sewing machine technical field, especially point to a kind of for the stabilizing structure of the thread shifting lever of multi-needle sewing machine, it includes slider slide rail group, connecting seat and adjusting lever, the slider slide rail group includes slider and slide rail, the slide rail is fixed on sewing machine body, the slider is slidably arranged on slide rail, the sewing machine body is provided with thread shifting lever, the thread shifting lever moves left and right with sewing machine work, the connecting seat is arranged on slider, one end of the adjusting lever is connected with thread shifting lever, its other end is adjustably connected with connecting seat, the adjusting lever, connecting seat and slider move with thread shifting lever moves, the utility model aims at providing a kind of stabilizing structure for the thread shifting lever of multi-needle sewing machine, which is reasonable in structure and simple, can move with thread shifting lever, and play the stabilizing effect.

The sewing machine needle bar thread hook comprises a thread hook body and a thread hook skirt edge, the thread hook skirt edge is arranged on the thread hook body, and a gap between the thread hook skirt edge and the thread hook body serves as a thread passing opening. And the upper thread is wound on the needle rod thread hook through the thread passing opening. The thread hook skirt edge is arranged on the thread hook body, the thread passing opening is formed between the thread hook body and the thread hook skirt edge, the end, away from the thread hook body, of the thread hook skirt edge is located on the outer side of the projection of the thread hook body in the vertical direction, and an upper thread can directly swing into the thread passing opening from the end of the thread hook skirt edge. The problem that the threading process is difficult due to a hole type threading mode in the prior art is solved, and threading convenience is improved.

The utility model discloses an auxiliary threading mechanism of a sewing machine, which comprises a sewing machine shell, a guide hook, a guide plate, a take-up lever and a guide slider, the guide hook, the guide plate and the take-up lever are arranged on the sewing machine shell, the lower end of the guide plate is provided with a guide tip protruding out of the sewing machine shell, and the guide slider is slidably arranged on the outer surface of the sewing machine shell. The outer surface of the sewing machine shell is provided with an identification path for indicating the movement direction of the guide sliding block, the guide sliding block is provided with a connecting part, during threading, one end of a sewing thread is connected with the connecting part, and the guide sliding block is moved to drive the connecting part to sequentially pass through the guide plate, the guide tip part and the take-up lever along the identification path; the sewing upper thread threading device can assist an operator in correctly threading the sewing upper thread. The sewing upper thread threading device has the advantages that the sewing upper thread can be sequentially wound on the guide tip part and the thread take-up lever.

To enable an operator to insert a thread wound out from a new bobbin into a thread inlet from a front side of a sewing machine with high workability by looking straight at the thread inlet with high discriminability when exchanging a thread.SOLUTION: A thread guide device of an embroidery sewing machine includes a spool holder 1 on which a support member for supporting a bobbin B and a thread inlet for allowing a thread T wound out from the bobbin B to be inserted are provided, a tension table 15 provided in front of the thread holder 1, and a flexible tube 10 for guiding the thread T inserted from the thread inlet toward the tension table 15. The thread inlet opens forward and is located at a level higher than the bobbin B. The tube 10 extends backward from the thread inlet and is bent and extends forward.SELECTED DRAWING: Figure 1

In sewing methods using a sewing machine, this makes it easier to maintain the correct tension of the upper thread. [Solution] In a sewing method using a sewing machine 10 equipped with an upper thread tension device 11, a thread guide 12 for changing the direction of the upper thread T that has passed through the upper thread tension device 11, and a balance beam 13 that can pull up the upper thread T while it is passing through the thread guide 12, the sewing machine 10 further equipped with an upper thread guide member 100 having a first guide section 120 for changing the direction of the upper thread T that has passed through the thread guide 12 and directing it back towards the thread guide 12, the upper thread T that has passed through the thread guide 12 is passed through the first guide section 120 to change its direction, passed back through the thread guide 12 before passing it through the balance beam 13, and then sewing is performed while it is passed through the balance beam 13.

To provide a yarn standing device capable of holding a yarn with good workability and a sewing machine.SOLUTION: A yarn standing device 2 has a yarn standing rod 3 to which a yarn reel 10 is fitted, a yarn hooking base 16 on which a yarn 9 wound around the yarn reel 10 is hooked, and a yarn holding slider 21 that can slide with respect to the yarn hooking base 16 and slides between a first position to cover a yarn hooking part 8 on which the yarn is hooked of the yarn hooking base 16 and a second position to expose the yarn hooking part 8. A yarn 9 hooked on the yarn hooking part 8 is held by sliding the yarn holding slider 21 to the first position.SELECTED DRAWING: Figure 3

The utility model discloses a silk thread sewing machine head which comprises an adapter, a needle bar, a needle bar driving mechanism, a guide ring and a connecting rod swing assembly, the needle bar is arranged on the adapter in a penetrating mode, a machine needle is arranged at the bottom of the needle bar, and the needle bar driving mechanism is used for controlling the needle bar to move up and down. The guide ring is arranged on the adapter seat in a sleeving mode and can slide up and down, the connecting rod swing assembly is connected with the guide ring, a cycloid presser foot is arranged on the connecting rod swing assembly, and the connecting rod swing assembly can drive the cycloid presser foot to swing left and right on the machine needle when moving. According to the thread sewing machine head, the guide ring and the connecting rod swing assembly are ingeniously applied, the guide ring can achieve power transmission of swing driving and can also achieve the functions of turning, reversing and the like during thread swinging, the thread sewing machine head can achieve the rapid sewing effect that thread swinging and sewing are conducted at the same time, sewn threads are more uniform and firmer, and the sewing efficiency is improved. Cycloid can be performed according to a pattern set by the system.

The utility model relates to an automatic sewing and folding device for cotton yarn sewing production, which comprises two mounting racks, a conveying component is mounted on the mounting rack on the front side, an overturning component is also mounted on the mounting rack on the front side, a conveying belt component is mounted on the mounting rack on the rear side, and workbenches are connected to the left and right parts of the mounting rack on the rear side. The sewing assemblies are installed on the upper sides of the workbenches, the fixing frame is placed between the outer sides of the workbenches, and the two mechanical arm assemblies are slidably connected to the fixing frame. The negative pressure installation assembly and the adsorption disc are additionally arranged on the mechanical arm assembly, when the mechanical arm assembly grabs cotton yarn downwards, the negative pressure installation assembly exhausts air in the lower portion of the cotton yarn and air in the adsorption disc, and therefore the adsorption disc adsorbs the cotton yarn, and the mechanical arm assembly grabs the cotton yarn more stably; therefore, the situation that the mechanical arm assembly falls off in the cotton yarn grabbing process is avoided, and the overall cotton yarn production efficiency can be improved.

The utility model relates to the technical field of sewing equipment, and discloses a thread shifting mechanism which comprises a thread shifting connecting plate which is rotatably arranged on a machine frame through a pin shaft and connected with a power mechanism so that the power mechanism can drive the thread shifting connecting plate to rotate around the pin shaft relative to the machine frame. The connecting end of the shifting rod is rotatably connected with the thread shifting connecting plate, and the free end of the shifting rod is provided with a thread shifting rod assembly used for shifting a thread; and the sliding groove clamping jaw is arranged below the wire shifting connecting plate and is rotatably arranged on the rack, the shifting rod is installed in the sliding groove clamping jaw in a sliding mode, and the sliding groove clamping jaw is used for limiting the moving direction of the shifting rod. The thread shifting connecting plate, the shifting rod and the sliding groove clamping jaw form a crank sliding block mechanism, the sliding groove clamping jaw is arranged below the thread shifting connecting plate, the thread shifting mechanism shifts threads up and down, compared with existing left-right thread shifting, the movement track of the shifting rod is effectively restrained, the movement range of the shifting rod in the horizontal direction is reduced, the movement space needed by the thread shifting mechanism is further reduced, and the thread shifting mechanism is convenient to use. And the space utilization rate is improved.

The utility model relates to the technical field of sewing machines, in particular to a left thread hook assembly of a sewing machine, which comprises a fixed part and a left thread hook, the fixed part is fixed on a machine head of the sewing machine and positioned on one side of a needle of a take-up lever, and an elastic reset part on the fixed part is connected with the left thread hook. The left thread hook is arranged on the fixing piece in the mode that the left thread hook can transversely move towards one side of a thread clamping device of the take-up-lever, the left thread hook is provided with an upper guiding part, a lower guiding part and an elastic part, the upper guiding part and the lower guiding part are both used for an upper thread to penetrate through and guide the upper thread towards the needle hole direction, and the upper guiding part and the lower guiding part are flexibly connected from high to low. The lower guide part can be reset under the action of the elastic part; the utility model further discloses the sewing machine adopting the left thread hook assembly of the sewing machine. The left thread hook assembly can improve the tension of a thread channel, and after the tension of the thread channel is reduced, the sewing problems of thread breakage, stitch skipping and the like can be reduced.

The application relates to a synchronous thread hooking and feeding mechanism of a double-head sewing machine, which comprises a driving module for driving a transmission module, a transmission module for driving a thread hooking module and a feeding module to work, a thread hooking module for hooking threads on materials, and a feeding module for assisting material movement, the driving module is in transmission connection with the transmission module, the thread hooking module and the feeding module are respectively in transmission connection with the transmission module, wherein the driving module drives the transmission module to work, thereby driving the thread hooking module to hook threads on materials and driving the feeding module to move the materials, and the double head can realize synchronous working thread hooking and feeding functions.

The utility model discloses a sewing device which is used for sewing a first cutting piece needing to be flanged to a second cutting piece. The device comprises a workbench, a sewing template and a sewing machine, and the workbench can generate airflow; the sewing template is arranged on the workbench and can make the first cutting piece upwarp so that the first cutting piece can be grabbed and folded to form a turnover part. The sewing template is further provided with a turning plate, and the turning plate is suitable for pressing the folding part. The sewing template is further provided with a cover plate, the cover plate is rotationally connected with the bottom plate and used for pressing a second cutting piece located between the turning plate and the cover plate, the cover plate is provided with a sewing groove, and the sewing groove right faces the portion, not covered by the turning plate, of the through hole. The sewing machine sews the first cutting piece needing to be flanged to the second cutting piece along the sewing groove, the sewing device can help an operator to accurately and rapidly perform flanging, and the production efficiency and the processing quality are greatly improved.

The invention relates to the technical field of linear sewing machines, and discloses an efficient linear sewing machine which comprises a fabric thread frame and further comprises a discharging device and a collecting device, an upper thread is arranged at the bottom of the fabric thread frame, an upper thread clamp is arranged on one side of the upper thread, a thread breakage detection box is arranged on one side of the upper thread clamp, and a thread breakage detection device is arranged on the other side of the upper thread clamp. A correlation switch is arranged on one side of the broken line detection box, a display screen is arranged on one side of the correlation switch, a presser foot air cylinder is arranged on one side of the display screen, a needle plate is arranged at the bottom of the presser foot air cylinder, a machine needle is arranged at the bottom of the needle plate, a presser foot is arranged at the bottom of the machine needle, and a line passing plate is arranged on one side of the presser foot air cylinder. By arranging the main assembling area, 65 needles can be installed and sewn at the same time, the maximum sewing range is 0-406 mm, mattress foxing strips of 0-500 mm can be produced, the use requirement of a user can be met, two servo motors are used for driving, enough power is provided for driving, and high-speed production sewing can be conducted.

[Problem] To facilitate the ability to maintain proper thread tension of an upper thread in a sewing method that uses a sewing machine. [Solution] Provided is a sewing method that uses a sewing machine 10 comprising an upper-thread tensioning device 11, a thread hook 12 for changing the direction of an upper thread T passed through the upper-thread tensioning device 11, and a thread take-up lever 13 that can carry out an operation of pulling up the upper thread T in a state in which the upper thread T has passed through the thread hook 12. For the sewing machine 10, a sewing machine is used that further comprises an upper-thread guide member 100 having a first guide part 120 for reversing the direction of the upper thread T passed through the thread hook 12 and directing the upper thread T once again to the thread hook 12. The upper thread T that has passed through the thread hook 12 is hooked to the first guide part 120 and subjected to a reversal of direction, then hooked once again to the thread hook 12 before being passed through the thread take-up lever 13, and then sewing is carried out with the upper thread T in a state of being passed through the thread take-up lever 13.

The utility model relates to the technical field of zippers, in particular to a zipper belt with a non-continuous sewing expansion cloth belt and sewing equipment for manufacturing the zipper belt, during working, a basic cloth belt to be sewn and the expansion cloth belt synchronously and continuously pass through a sewing mechanism under the action of a belt dragging mechanism, and the sewing mechanism sews and fixes the passing expansion cloth belt on the side portion of the basic cloth belt. The method comprises the following steps: sewing a base cloth belt with a preset length, stopping for a preset time after sewing the base cloth belt with the preset length, then starting sewing the base cloth belt with the preset length, and repeating the steps, so that the produced expansion cloth belt is along the length direction of the base cloth belt: sewing lines between the expansion cloth belt and the base cloth belt are arranged in a sectional manner, and local sections of the expansion cloth belt are separated from the base cloth belt in a non-sewing manner. In this way, when goods are supplied to an application manufacturer, the application manufacturer only needs to cut off the expansion cloth belt which is not sewed and fixed at the non-sewed position of the expansion cloth belt, the procedure of unsewed threads is omitted, time and labor are saved, and the working efficiency is improved.

The utility model provides a sewing machine needle bar thread hook, a pricking mechanism and a sewing machine, which are applied to the sewing machine. Comprising a wire hook main body and a wire hook skirt edge, the wire hook skirt edge is arranged on the wire hook main body, and a gap between the wire hook skirt edge and the wire hook main body is a wire passing opening; an outer thread accommodating part is arranged on the outer wall of the thread hook main body on the upper side of the thread passing opening, and an inner thread accommodating part is arranged on the inner wall of the thread hook skirt edge on the lower side of the thread passing opening; an upper thread is wound into the needle rod thread hook through the thread passing opening and is positioned in the outer thread accommodating part and the inner thread accommodating part. The outer thread containing part is arranged on the outer wall of the thread hook body, the inner thread containing part is arranged on the inner wall of the thread hook skirt edge, an upper thread is located in the inner thread containing part and the outer thread containing part, meanwhile, the outer thread containing part has a certain inclination from top to bottom, the upper thread is tightly attached to the surface of the outer thread containing part, and the stress between the upper thread and the needle bar thread hook can be effectively reduced.

The utility model discloses an automatic untwisting device for twisted threads, and relates to the technical field of untwisting devices, the automatic untwisting device for twisted threads comprises a base, the upper end of the base is provided with a mounting base, a motor and an extension rod; according to the automatic twisted thread untwisting device, through the arrangement of a brake assembly, a CCD camera recognizes a sewing thread penetrating through a thread inlet hole, under the condition that the sewing thread is knotted, a first electric telescopic rod drives a mounting frame, a guide frame and a thread clamping frame to clamp the sewing thread, and then a synchronous wheel and a synchronous belt are driven through the output end of a motor; the untwisting state of the sewing thread is monitored through a CCD camera, after untwisting is completed, operation of a motor is stopped, meanwhile, a brake assembly brakes the rotating tray, then a first electric telescopic rod drives a mounting frame, a guide frame and a thread clamping frame to reset, and the sewing thread is untwisted. Therefore, the phenomenon that the sewing thread is broken is avoided.

The utility model relates to a sewing machine thread shifting device which comprises a connecting plate, open grooves are formed in the positions, close to the left side and the right side, of the top of the connecting plate, magnets are fixedly connected in the open grooves, ropes are fixedly connected to the centers of the front side and the rear side of the connecting plate, and the positions, close to the top, of the edges of the outer sides of the ropes are sleeved with movable pipes. Through mutual cooperation of the connecting plate, the magnet, the movable pipe, the T-shaped plate and other structures, the connecting plate can be placed on the sewing machine, the magnet is attracted to the surface of the sewing machine, the connecting plate is preliminarily limited, then the two ropes are wound around the surface of the sewing machine, and the two ropes are wound around the surface of the sewing machine. And the T-shaped plate on the movable pipe on one side is placed in the T-shaped groove in the movable pipe on the other side, so that the connecting plate is further limited.

The transmission box comprises a box body, a driving shaft rotatably connected to one side of the box body, a thread tensioning mechanism, a thread shifting mechanism and a needle bending mechanism, wherein the thread tensioning mechanism comprises a thread guide, a thread tensioning rod and a first transmission assembly, the thread guide is provided with a thread guide hole, the thread tensioning rod is located beside the thread guide, the driving shaft can drive the thread tensioning rod to reciprocate up and down through the first transmission assembly when the driving shaft rotates, and the thread tensioning rod is provided with a thread tensioning hole; the thread shifting mechanism comprises a thread shifting hook and a second transmission assembly, the driving shaft can drive the thread shifting hook to reciprocate along the horizontal direction through the second transmission assembly when the driving shaft rotates; the needle bending mechanism comprises a needle and a third transmission assembly, the needle is provided with a thread passing channel extending along the length direction of the needle, and the driving shaft can drive the needle to move close to or away from the thread shifting hook through the third transmission assembly when the driving shaft rotates.

This invention provides a right thread hook for a sewing machine, a thread guide mechanism, a sewing machine, and a thread trajectory for the right thread hook. It includes a fixed part and a guide part. The guide part is slidably connected to the fixed part, and the thread passes through the guide part. The guide part can slide along the fixed part with the thread, keeping the thread in a low-tension position. In this invention, the guide part is slidably connected to the fixed part, thus ensuring that the thread-carrying range of the thread guide includes the movement range of the large thread clamp surface and the thread take-up lever's thread hole. During sewing, the guide part slides along the fixed part with the thread, keeping the thread in a low-tension position at all times, reducing tension fluctuations, and preventing thread slippage and breakage.

The utility model discloses a sewing machine with a thread shifting structure, and relates to the related technical field of sewing machines. The sewing machine comprises a sewing machine body, the sewing machine body is fixedly connected with a thread shifting frame through a bolt, the thread shifting frame is fixedly provided with a driving motor through a motor installation support, an output shaft of the driving motor is fixedly sleeved with a rotating disc, and the rotating disc is fixedly connected with a connecting sliding rod through a locknut. The driving motor drives the rotating disc to rotate, the thread shifting rotating rod can be driven to move back and forth around the connecting column head through cooperation of the connecting sliding rod, the connecting rod and the rear connecting column, and therefore the thread shifting hook can be driven to move back and forth to shift threads of the sewing machine, and an external structure does not need to be used for assisting the thread shifting rotating rod to reset. And a limiting structure does not need to be installed to limit the thread shifting rotating rod, so that the thread shifting structure of the sewing machine is more concise, and the moving range of the thread shifting rotating rod can be flexibly adjusted by moving and adjusting the connecting sliding rod along the adjusting groove.

The utility model discloses an automatic laying device for horsetail interlining material, which relates to the technical field of sewing equipment, and comprises a support body and horsetail hair, one end of the horsetail hair is fixed on the support body, the other end of the horsetail hair is suspended, and a driving component drives the support body to rotate, so that all the horsetail hair circularly rotates. The moving direction of the horsetail hair right opposite to the sewing needle is the same as the moving direction of the cloth, the horsetail hair is used for being sewn by the sewing thread when the cloth is sewn and drawn out after sewing is completed, the horsetail hair is clamped between the sewing thread and the cloth during sewing, a certain space is occupied, the horsetail hair bears certain pressure, and the cloth moves along a straight line after sewing is completed. The horsetail hair rotates around the axis, and the horsetail hair can be drawn out of the sewing thread after moving by a certain distance. According to the device provided by the utility model, the horsetail interlining can be automatically laid, the horsetail hair material is continuously and circularly used, the loss of the material can be effectively reduced, sewing is completed while the horsetail interlining disc rotates, and the sewing efficiency of the horsetail interlining can be improved.

The invention discloses a device and a method for automatically suturing locking stitches made of super-thick and special materials, and the device comprises a pre-pricking assembly which comprises a pre-pricking needle used for puncturing a prefabricated body; the suturing assembly comprises a suturing needle used for suturing the prefabricated body; the third driving unit is used for switching the positions of the suture needle and the pre-pricking needle; in any suture process of forming the lock stitch, the pre-puncturing needle punctures the prefabricated body, and then the suture needle sutures the prefabricated body. The sewing needle and the pre-pricking needle which are arranged in an up-and-down hiding mode are changed into the sewing needle and the pre-pricking needle which are arranged in a left-and-right hiding mode, the sewing needle does not need to be lifted up by 100 mm for parallel hiding, the upper thread penetrating through the sewing needle can be reduced to 50-60 mm after the sewing needle is lifted up, the sewing needle only needs to be lifted up to exceed the thickest sewing material, and friction damage to the thread is much smaller.

The invention provides a thin-wall conical section preform sewing device, which belongs to the technical field of bilateral sewing devices, and comprises a thread leading mechanism, a thread hooking mechanism, an inclination mechanism and a translation mechanism, the wire leading mechanism drives a wire leading crank to complete the whole-circle movement through a group of synchronous belt wheels, and a wire leading needle carried on the wire leading mechanism reciprocates to realize the mechanism wire leading action; the thread hooking mechanism drives the cam to complete the whole-circle movement and is accurately matched with the thread leading needle carrying the thread to complete the sewing action; the tilting mechanism is driven by a hand-cranking wheel to drive a carrying block on a trapezoidal lead screw to move to complete inclination angle change, a thread leading needle is promoted to vertically penetrate into a sewing material all the time, a rotating shaft is borne on the tilting mechanism, and the rotating shaft is driven to control the needle pitch. The translation mechanism moves through a guide rail sliding block, the translation freedom degree is added for the inclination mechanism, and the translation action is completed in the sewing process. The circular sewing device is compact in structure, circular sewing of the thin-wall conical section prefabricated body can be achieved, and sewing efficiency and product quality consistency are improved.

The utility model provides a thread shifting mechanism of a sewing machine, and belongs to the technical field of sewing machines. The problem that an existing wire shifting mechanism is insufficient in working reliability is solved. According to the thread shifting mechanism of the sewing machine, the sewing machine comprises a base and a rotating shuttle arranged in the base, the thread shifting mechanism comprises a thread shifting rod and a strip-plate-shaped thread shifting base located on the side portion of the rotating shuttle, the thread shifting rod is arranged on the thread shifting base, and the end portion of the thread shifting rod can stretch into the upper portion of the rotating shuttle to do circumferential circulating motion. The end, away from the rotating shuttle, of the thread shifting base is rotationally arranged on the base, a driving piece is further arranged on the base, and the driving piece can drive the other end of the thread shifting base to horizontally swing forwards so that the end of the thread shifting rod can be away from the rotating shuttle. The thread shifting rod can be effectively prevented from colliding with the thread trimming movable cutter, so that the reliability of sewing work is remarkably improved.

The utility model discloses a thread puller of a sewing machine. The thread puller comprises a sewing machine head and a thread pulling structure. According to the thread puller of the sewing machine, by arranging the thread pulling structure, after the sewing machine stops sewing, the driving motor can drive the straight gear to rotate at the moment, the thread fixing assembly can be driven to move rightwards through meshing transmission of the straight gear and the straight rack, a thread can be pulled to move rightwards, and a long thread on a machine needle is shortened; the threaded column can be driven to rotate by rotating the rotary knob, the distance between the limiting block and the check block can be changed by utilizing spiral transmission of the threaded column and the nut seat, and when the limiting block moves to the check block, the thread hook and the connecting plate do not continue to move at the moment, so that the thread hook and the connecting plate do not continue to move. Therefore, the lengthened length of the sewing thread of the machine needle can be changed by adjusting the distance between the limiting block and the stop block, the pulled-out length of the sewing thread on the machine needle can be finely adjusted, and the problem that the sewing thread on the machine needle is pulled out is avoided.