23results about "Thread-laying mechanisms" patented technology

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 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.

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.

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 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.

[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 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 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.

The invention relates to a thread pulling device matching method, a single-motor driving structure and a flat seaming machine. The thread shifting device matching method comprises the following steps that a, after a control center detects the action of a rear pedal, a stepping motor is started, timing is started, and the stepping motor starts to rotate at the rotating speed V from a stepping motor angle B corresponding to the actual sewing needle pitch; b, the control center calculates thread shifting delay time T, the calculation formula of the thread shifting delay time T is T = B-A / V, and A is the angle of the stepping motor after thread trimming is completed; c, the control center starts the wire dialing device after timing to the wire dialing delay time T; according to the method, the required time from the rear pedal stepping to the end of thread trimming under different needle pitches is calculated, the time is used as thread shifting delay time T, timing is started from the rear pedal stepping, and a thread shifting device is started after timing reaches the thread shifting delay time T; therefore, the thread shifting actions of the thread shifting device under different needle pitches can be completed within the interval time from the end of thread trimming to the start of presser foot lifting.

The utility model discloses a three-dimensional flyknit vamp edge covering device, which belongs to the field of flyknit process, and comprises a working frame, the upper top end of the working frame is provided with a wire outlet assembly, the wire outlet assembly comprises a vertical plate fixedly connected to the upper top end of the working frame, the inner wall of the vertical plate is fixedly connected with a wire placing box, and the inner wall of the wire placing box is rotatably connected with a fixed roller. The side wall of the thread containing box is rotationally connected with a reciprocating lead screw, the outer wall of the reciprocating lead screw is sleeved with a thread outlet seat in a threaded mode, through cooperative use of all the devices, the thread outlet efficiency and stability of the edge covering device are improved, the phenomenon that weaving threads are wound and knotted in the flyknit process, and then the flyknit edge covering efficiency is affected is avoided, and through operation of the flyknit device, the flyknit edge covering efficiency is improved. According to the flyknit edge covering machine, the weaving thread is driven to penetrate through the inner wall of the thread outlet base, the weaving thread can smoothly pass through the three-jaw chuck, then the reciprocating lead screw is matched to enable the thread outlet base to drive the weaving thread on the outer wall of the bobbin to be evenly and stably discharged, and then the flyknit edge covering stability and efficiency are improved.

The utility model relates to a sewing machine, in particular to a laser sewing machine. The sewing machine structurally comprises a base, a machine body is arranged above the base, a machine head is arranged in front of the machine body, a needle rod and a presser foot rod are arranged in the machine head, a laser lamp tube is arranged on one side of the needle rod in the machine head, a tooth-shaped refraction slide is arranged below the laser lamp tube, and after a sewing stitch laser beam emitted by the laser lamp tube passes through the tooth-shaped refraction slide, the sewing stitch laser beam passes through the tooth-shaped refraction slide. The cloth feeding tooth shielding plate is arranged below the machine head, and is lifted up and down through a lifting mechanism. According to the laser sewing machine, sewing stitches are clear and accurate, the cloth feeding tooth shielding plate can be rapidly adjusted through the lifting mechanism, and the laser sewing machine is suitable for to-be-processed cloth with different thicknesses.

According to the overlock machine and the stitch control method, the overlock machine comprises a main shaft, an upper curved needle, a lower curved needle and a thread supply adjustable device, the thread supply adjustable device comprises a first cam piece set and a second cam piece set, and the first cam piece set is used for pushing a lower curved needle thread in an intermittent mode so as to control thread supply and take-up of the lower curved needle; the second cam sheet group is independent of the first cam sheet group and is used for pushing the upper curved needle thread in an intermittent manner so as to control the thread supply and take-up of the upper curved needle; wherein the first cam piece set and the second cam piece set rotate synchronously, and the upper curved needle takes up threads in advance compared with the lower curved needle. In this way, large-range adjustment of the thread amount of the upper looper and the lower looper can be achieved, and 360-degree full-range thread supply and take-up time sequence accurate regulation and control can be completed within the rotation period of a single main shaft; and the formed upper looper thread ring can be prevented from being pulled obliquely due to the take-up action of the lower looper, so that a fuller upper looper thread ring can be formed during sewing of the overedger, and the sewing quality is improved.