63results about "Take-up devices" patented technology

The invention provides a sewing machine right thread hook, a thread passing mechanism, a sewing machine and a right thread hook upper thread track, the sewing machine right thread hook comprises a fixing portion and a guiding portion, the guiding portion is slidably connected to the fixing portion, an upper thread is arranged in the guiding portion in a penetrating mode, and the guiding portion can slide on the fixing portion along with the upper thread to enable the upper thread to be in a low-tension position. The guide part is connected to the fixing part in a sliding mode, so that the thread containing range of the thread passing part comprises the movement range of the thread clamping face of the large thread clamping device and the movement range of the thread passing hole of the take-up lever, when sewing work is carried out, the guide part can slide on the fixing part along with an upper thread, the upper thread is made to be located at the low-tension position all the time, the change amplitude of tension is reduced, and sewing efficiency is improved. And the problems of line throwing and line breaking are avoided.

The sewing equipment comprises a sewing machine body, the sewing machine body comprises a machine needle and a presser foot, the sewing equipment further comprises a U-shaped workbench and a thread adjusting mechanism, the U-shaped workbench is used for bearing and fixing a voice coil damper assembly of the loudspeaker, and the voice coil damper assembly comprises a voice coil, a damper and a brocade silk thread; the presser foot is used for pressing down and fixing the damper on the U-shaped workbench; the thread adjusting mechanism comprises a thread adjusting rod, and the thread adjusting rod is used for upwards lifting the first section of the brocade silk thread; the machine needle is used for connecting preset connecting points of the brocade silk threads to the damper in a sewing mode, and the first section of each brocade silk thread protrudes upwards by a radian after sewing is completed. According to the invention, the brocade silk threads of the voice coil can be sewed and connected to the damper, so that the routing problem of the brocade silk threads is solved; the length of the brocade silk threads can be controlled, and the radian consistency of the brocade silk threads is controlled.

The invention discloses an automatic take-up tension control method of a template machine, and belongs to the technical field of textile. The invention aims to solve the problems of low tension control precision and poor adaptability caused by insufficient nonlinear interference compensation, lack of multi-working-condition collaborative analysis and high manual dependency in the prior art. According to the method, the cloth thickness is collected in real time through a thickness sensor, and a yarn consumption predicted value is output through a core model in combination with the stitch length; the AI module feeds back dynamic optimization model parameters based on the broken line record and the stitch tightness, and generates accurate line consumption; a servo motor is driven on the basis of the difference between the value and the standard quantity, and the rotation angle of the motor is converted into the angular displacement of the take-up-lever through a four-bar mechanism composed of a coupler, an eccentric shaft and the take-up-lever. By combining closed-loop feedback of a displacement sensor and spindle phase collaboration and integrating AI anomaly diagnosis, a self-optimization system driven by historical data is constructed, and tension stability and stitch quality under complex working conditions are continuously improved.

The utility model discloses an upper thread supply mechanism of a sewing machine, and relates to the technical field of sewing machines. The sewing machine is provided with a machine arm, a main shaft motor is arranged on the machine arm, the main shaft motor is in locking connection with a main shaft to drive the main shaft to rotate, and the upper thread supply mechanism of the sewing machine comprises a driving motor, a thread take-up lever, a thread passing hook and other components. The upper thread feeding mechanism of the sewing machine is additionally and independently provided with the driving motor as an independent driving source, so that the situation that the control relation between the upper thread feeding mechanism and the movement of the main shaft is complicated due to the fact that the movement of the take-up lever is controlled by the rotation of the main shaft motor is avoided. The upper thread feeding mechanism solves the problem that in the prior art, the thread taking-up amount of the upper thread feeding mechanism is difficult to adjust rapidly according to the type of fabric.

To provide a sewing machine that has a cam-type balance, uses a plurality of needle threads, and can match sewing finishing of the threads.SOLUTION: A sewing machine comprises: a needle bar that holds a first sewing machine needle and a second sewing machine needle, and is vertically driven; a balance that allows a first needle thread fed to the first sewing machine needle and a second needle thread fed to the second sewing machine needle to be inserted, and operates in conjunction with the needle bar; a cam part including a first cam for adjusting thread tightness by guiding the first needle thread passing through the balance and a second cam for adjusting the tread tightness by guiding the second needle thread passing through the balance, provided apart from the first cam; and a sewing machine body in which the needle bar, the balance, and the cam part are provided. The first cam and the second cam are fitted to the sewing machine body so that positions thereof can be independently adjusted to the sewing machine body.SELECTED DRAWING: Figure 6

The present invention addresses the problem of preventing hitch stitches caused by lower thread factors. A needle plate (19) has a needle hole (19a) and a guide hole (31) that communicates with the needle hole. The guide hole is offset toward a front surface of a sewing machine and is also offset in the rotation direction of a bobbin case from the line of vertical movement of a sewing needle. The needle plate also has a groove part (32) that extends from the guide hole (31) in front of the needle hole in the direction opposite the rotation direction of the bobbin case. The top of the groove part and the portion of the groove part that leads to the guide hole are open, and the remainder of the groove part is a bottom surface and a side wall. During a sewing operation, a lower thread that protrudes from the bobbin case extends upward through the needle hole or the guide hole. Depending on the movement direction of a holder (a frame 5) for an article to be sewed, the lower thread passes through the guide hole and is guided to the front side of the needle hole via the groove part. The bottom surface of the groove part is closed, which prevents an upper thread loop that rises along the lower thread from catching on the groove part.

The utility model discloses a sewing machine balancing device and a sewing machine. The sewing machine balancing device comprises a thread passing seat shaft; the thread take-up crank is sleeved on the thread passing seat shaft; the balance assembly is connected with the thread take-up crank, and a height difference exists between the mass center of the balance assembly and the axis of the thread take-up crank; when the needle bar assembly connected with the thread passing seat shaft moves to the highest point, the thread take-up crank swings along with the thread passing seat shaft and enables the balance assembly to swing to the lowest point; when the needle bar assembly moves to the lowest point, the thread take-up crank swings along with the thread passing seat shaft and enables the balance assembly to swing to the highest point. According to the sewing machine, the balancing assembly is connected to the thread take-up crank, the unbalanced vertical inertia force generated when the needle rod assembly moves is counteracted through the inertia force generated by the balancing assembly, vibration of the whole sewing machine is reduced through balancing of the inertia force, mainly vibrating, of the needle rod assembly, and the working reliability and stability of the sewing machine are improved.

The utility model provides a variable thread quantity take-up auxiliary device, which relates to the technical field of clothing sewing, and comprises a driver, a transmission connecting rod, a slide block and a guide member, during working, the driver drives the slide block to do reciprocating translational motion along the guide member through the transmission connecting rod, the guide member is provided with a chute, and the slide block does linear displacement along the chute; the sliding block is provided with a movable thread passing hook, the movable thread passing hook can move horizontally along with the sliding block, the movable thread passing hook pulls a thread to move, the position of the thread is changed by changing the position of the movable thread passing hook, the position state of the thread is changed, and the thread supply amount is adjusted.

The present application proposes a split-type flat-bed sewing machine, which specifically relates to the technical field of flat-bed sewing machine manufacturing. The flat-bed sewing machine has a frame, a table, a thread-up mechanism and a thread-down mechanism, and is characterized in that the thread-up mechanism at least has a needle bar assembly, a presser foot lifting assembly and a thread-taking assembly, and the thread-down mechanism at least has a feed dog assembly, a rotary hook assembly and a thread-cutting assembly, and there is no mechanical transmission connection between the thread-up mechanism and the frame, and the thread-down mechanism has no mechanical transmission connected to the table. The present application proposes a split-type flat-bed sewing machine, which has an thread-up mechanism and a thread-down mechanism that each operate independently, and cleverly separates the thread-up mechanism and the thread-down mechanism in terms of mechanical transmission, cancels the traditional upper and lower linkage mechanical transmission structure, and realizes the oil-free operation of the flat-bed sewing machine mechanical transmission mechanism without lubrication, simplifies the mechanical structure, and greatly reduces the manufacturing cost of the sewing machine, and has a high promotion value.

The present invention aims to avoid occurrence of a hitch stitch caused by a lower thread. A needle plate (19) has a needle hole (19a) and a guide hole (31) communicating with the needle hole. The guide hole is located near a front side of a sewing machine and positionally deviated from an up-down movement trajectory of a sewing needle in a rotating direction of a rotary hook. Further, the needle plate has a groove (32) formed in front of the needle hole and extending from the guide hole (31) in a direction opposite to the rotating direction of the rotary hook. While the groove is open upward and at its portion leading to the guide hole, the other portions of the groove are defined by a bottom surface and side walls. In a sewing operation, a lower thread moved out of the rotary hook extends upward through the needle hole or the guide hole. Depending on a direction in which a holding member (frame 5) holding a sewing workpiece moves, the lower thread passes through the guide hole to be guided to the front of the needle hole via the groove. Because the groove is closed at the bottom surface, an upper thread loop moving upward along the lower thread can be prevented from getting caught in the groove.

The invention discloses an overlock machine thread take-up and thread trapper dynamic adjusting device and an overlock machine, and relates to the technical field of sewing. The technical problems that in the prior art, when thin fabric is sewed by an overlock machine, the fabric wrinkles due to the fact that the tension of machine needles and threads is too large are solved, and meanwhile it is guaranteed that stitches are compact and attractive are solved. The adjusting device comprises a machine shell, a take-up lever, a main shaft and a machine needle thread trapper, the machine needle thread trapper comprises a thread trapper shaft and is provided with a machine needle thread trapper dynamic adjusting mechanism, and the machine needle thread trapper dynamic adjusting mechanism comprises a double-spring structure arranged on the thread trapper shaft in a sleeving mode; the rotating shaft is linked with the main shaft; the eccentric wheel is arranged on the rotating shaft; the sliding rod assembly is connected with the eccentric wheel and the yarn trapper shaft; an external thread adjusting structure is arranged at the front end of the yarn trapper shaft; when the main shaft rotates, the eccentric wheel and the sliding rod assembly enable the pressure of the thread trapper to be increased in the needle stabbing stage and decreased in the needle ascending stage. The adjusting device has the advantages that the thin fabric is effectively prevented from wrinkling during sewing, and meanwhile, the stitch can be kept compact and attractive.

The technical scheme belongs to the technical field of template machines, and particularly relates to a needle rod device of a template machine, which comprises a rack, a needle rod, a needle head, a needle rod, a needle rod and a needle rod, the displacement mechanism is arranged on the machine frame, the displacement mechanism comprises a displacement driving part and a needle rod connector arranged at the output end of the displacement driving part, the front end of the needle rod connector is arranged outside the machine needle rod in a sleeving mode, and the displacement driving part drives the machine needle rod to move in a reciprocating mode in the needle inserting direction through the needle rod connector; the rotating mechanism is arranged on the machine frame, the rotating mechanism comprises a rotating driving part, the machine needle rod is arranged at the output end of the rotating driving part, and the rotating driving part is used for driving the machine needle rod to rotate with the axis of the machine needle rod as the center.

The invention discloses a speed-reduction-controlled thread take-up mechanism and a sewing machine, and relates to the technical field of sewing machines, the speed-reduction-controlled thread take-up mechanism comprises a base, a main shaft, a thread bonding cam and a speed reduction assembly, the main shaft is rotationally matched on the base, the thread bonding cam is rotationally matched on the base, and a groove is formed in the side wall of the thread bonding cam; the speed reduction assembly is arranged between the spindle and the routing cam, the spindle drives the routing cam to rotate through the speed reduction assembly, and the rotating speed of the routing cam is lower than that of the spindle. According to the take-up mechanism with the speed reduction control function and the sewing machine, the low rotating speed of the thread bonding cam can be kept under the high-speed sewing condition, and then the thread supply stability is kept.

The invention discloses a method for sewing high-density cloth thread throwing prevention and a sewing device, flexible thread supply is used, a thread supply amount curve envelops a thread demand amount curve, and the method comprises the following steps: setting a main shaft rotation angle phi, enabling a peak value of the thread supply amount curve to move rightwards, and enabling the peak value height fluctuation to be less than + / -10%; the sewing equipment comprises a flexible thread supply device, and the thread throwing prevention method for sewing the high-density cloth is adopted.

The invention discloses a thread bonding mechanism and a sewing machine, the thread bonding mechanism comprises a first fixing piece, a pressing rod sliding block, a thread passing assembly and a driving shaft, the pressing rod sliding block is movably connected to the first fixing piece through a first guide mechanism, the pressing rod sliding block can move in the height direction, the pressing rod sliding block is provided with an inclined surface, and the inclined surface is provided with a thread passing hole; an angle is formed between the inclined plane and the height direction; the wire passing assembly comprises a second fixing piece connected to the shell, a guide rod which is connected to the second fixing piece and can horizontally move relative to the second fixing piece, a roller which is connected to one end of the guide rod and abuts against the inclined face, and a wire passing device connected to the other end of the guide rod. The driving shaft is in transmission connection with the pressing rod sliding block through a transmission assembly, and the driving shaft can drive the pressing rod sliding block to move in the height direction when rotating around the axis of the driving shaft, so that the inclined face pushes the guide rod to horizontally move, and the thread passing device is driven to horizontally move so as to pull a thread penetrating through the thread passing device. The problem that the thread amount and the cloth thickness are not matched can be effectively solved.

The utility model belongs to the technical field of sewing machines. The problem that in the prior art, threading and removing of a covering thread are difficult is solved. The thread passing structure of the sewing machine comprises a first thread passing hole formed in a thread passing frame and a second thread passing hole formed in a supporting frame, a rocker arm frame is connected with a thread bonding plate with a third thread passing hole, and a machine shell is further connected with a tensioning frame with a fourth thread passing hole. The first thread passing hole, the third thread passing hole, the second thread passing hole and the fourth thread passing hole are sequentially distributed from top to bottom, the fourth thread passing hole, the third thread passing hole, the second thread passing hole and the first thread passing hole are sequentially distributed from left to right, and the first thread passing hole is formed in the front-back direction of the sewing machine. The second thread passing hole and the third thread passing hole are formed in the left-right direction of the sewing machine, and the fourth thread passing hole is formed in the up-down direction of the sewing machine. The utility model has the advantage of greatly facilitating the threading and removing operation of the covering thread.

The utility model discloses a thread drawing device of a sewing machine, which comprises a machine head, the machine head is provided with a thread drawing device, the thread drawing device comprises an electromagnet, a mounting bracket, a movable thread plate, a hinge column, a base plate and a hinge spring, the electromagnet is mounted on the mounting bracket, the mounting bracket is fixed on the base plate, and the hinge spring is fixed on the movable thread plate. One end part of the movable thread plate is rotationally mounted on the base plate through a hinge column, the other end of the movable thread plate corresponds to the electromagnet, and a threading hole for a sewing thread to pass through is formed in the movable thread plate; the hinge spring is sleeved on the hinge column, one end of the hinge spring abuts against the movable wire board, and the other end of the hinge spring abuts against the installation support. When the sewing machine is used for drawing threads, the thread drawing device can be well matched with the sewing machine to work and quickly act and can be timely matched with other devices to press the threads, so that the sewing machine can better draw the threads, the technical defects of an existing structure are overcome, and the thread residue phenomenon of a bird nest is effectively prevented.

The double-needle mechanism comprises two needle rod supports, a sliding support and a support shaft. Each needle rod support is independently provided with a needle rod slidingly installed thereon. The two needle rods are respectively connected with a machine needle at one end of the corresponding needle rod support. The support shaft is connected with the two needle rods and can drive the two machine needles to make reciprocating movement relative to the needle rod support along the axial direction of the needle rod. The two needle rod supports are slidingly installed on the sliding support so that the distance between the two needle rod supports can be adjusted by sliding the two needle rod supports on the sliding support. The double-needle mechanism can adjust the distance between the two needle rod supports, i.e. the needle position, to meet the requirements of different garment processes and avoid the problems caused by replacing the machine needle.

A needle plate has a needle hole and a guide hole communicating with the needle hole. The guide hole is located near a front side of a sewing machine and positionally deviated from an up-down movement trajectory of a sewing needle in a rotating direction of a rotary hook. The needle plate has a groove formed in front of the needle hole and extending from the guide hole in a direction opposite to the rotating direction of the rotary hook. While the groove is open upward and at its portion leading to the guide hole, the other portions of the groove are defined by a bottom surface and side walls. In a sewing operation, depending on a direction in which a member holding a sewing workpiece moves, the lower thread passes through the guide hole to be guided to the front of the needle hole via the groove.

The present invention discloses a thread taking-up mechanism of a sewing machine, the technical scheme of which includes a main shaft and a casing on a sewing machine body, a thread taking-up rod and a needle bar being arranged on the main shaft, the thread taking-up rod extending out of the side wall of the casing and swinging back and forth in a curved trajectory, the needle bar extending out through the bottom of the casing and making reciprocating motion in the vertical direction, a needle being arranged at the protruding end of the needle bar; a thread clamp, a thread loosening hook and an adjusting frame are further arranged on the side of the casing where the thread taking-up rod extends out, the adjusting frame being arranged between the thread clamp and the thread taking-up rod, the thread loosening hook being connected to the main shaft through a transmission mechanism, the sewing thread being passed through the thread clamp, the adjusting frame, the thread taking-up rod and the needle in sequence, the present invention has a thread compensation function, which prevents the sewing thread from being too tight or too loose to cause unsightly stitches, and at the same time improves the needle insertion accuracy, and the thread amount is adjustable, which can assist the thread taking-up mechanism in controlling the thread amount, and can sew excellent and smooth stitches for fabrics of different thicknesses.

The present application discloses a control method, system, electronic device and storage medium for a synchronous vehicle, and the technical field to which it belongs is clothing processing equipment technology. The control method of the synchronous vehicle includes: when the thread take-up lever of the synchronous vehicle is in the upper needle stop position, recording the initial mechanical angle of the spindle motor; judging whether the presser foot of the synchronous vehicle is lifted; if so, determining the current mechanical angle of the spindle motor; calculating the spindle rotation angle according to the initial mechanical angle and the current mechanical angle; if the spindle rotation angle is within a preset range, adjusting the output power of the spindle motor to increase the rotational torque of the spindle motor; wherein the rotational torque of the spindle motor is used to increase the resistance to the downward movement of the piercing thread take-up mechanism. The present application can avoid the downward movement of the piercing thread take-up mechanism caused by lifting the presser foot, thereby improving the safety of the synchronous vehicle.

The invention belongs to the technical field of sewing machines, and particularly relates to a method for improving the needle raising thread carrying effect of a template and a template machine, and the method comprises the following steps: S1, entering an internal circulation; s2, judging whether the current sewing needle number is smaller than or equal to the set needle number N, and if yes, entering the step S3; if not, entering the step S8; s3, compared with normal sewing, the height of a middle presser foot is reduced; s4, compared with normal sewing, the follow-up amplitude of the middle presser foot is reduced; s5, compared with normal sewing, the middle presser foot lifting opportunity lags behind; s6, in the ascending process of the take-up-lever, a thread loosening mechanism loosens threads; s7, in the descending process of the take-up-lever, the thread loosening mechanism closes thread loosening, and the step S1 is executed again; and S8, normally sewing, and returning to the step S1. According to the invention, the needle-lifting thread carrying rate can be improved, the needle-lifting thread loosening phenomenon is reduced, the rework rate is reduced, and the production efficiency is effectively improved.

The utility model provides a sewing machine right thread hook, a thread passing mechanism and a sewing machine, the right thread hook comprises a fixed part and a thread path extension part, and the thread path extension part is arranged on the fixed part; the upper thread is arranged in the thread channel extension part in a penetrating manner, and the position of the upper thread relative to the fixed part is variable, so that the upper thread is in a vertical state. According to the right thread hook of the sewing machine, the thread passing mechanism and the sewing machine, the thread containing range of the thread passing portion on the thread channel extension portion comprises the movement range of the thread clamping face of the large thread clamping device and the movement range of the thread passing hole of the take-up lever, when sewing work is carried out, an upper thread can swing on the thread passing portion, the upper thread is made to be located at the low-tension position all the time, the variation amplitude of tension is reduced, and the sewing efficiency is improved. The stress condition of the large thread trapper is improved, the upper thread stability is improved, and therefore the problems of thread throwing, thread breaking and the like are reduced.

Embodiments of present disclosure relates to a thread drawing device and a thread drawing method. The thread drawing device comprises: a drive assembly (70) comprising a drive wheel (72) comprising a working platform (722) for supporting a thread (85), the thread (85) comprising a fixed end (852) fixed on an object (90) and a movable end (854) carried by a tool, a pressing assembly (60) comprising a pressing member (62) configured to move between a first position at which the pressing member (62) engages the working platform (722) to clamp the thread to be pulled therebetween and a second position at which the pressing member (62) disengages from the working platform (722) to release the thread to be pulled; and a motor (74) configured to rotate the drive wheel (72) when the pressing member (62) is at the first position so as to move a loose part (855) of the thread at the fixed end from the fixed end to the movable end.

The utility model belongs to the technical field of sewing equipment, and particularly relates to a sewing machine. Comprising a machine shell and a take-up-lever pin, a take-up-lever pin hole and an adjusting shaft hole are formed in the machine shell, the diameter of the take-up-lever pin hole is larger than or equal to the aperture of the adjusting shaft hole, the take-up-lever pin hole and the adjusting shaft hole are coaxially arranged, and the take-up-lever pin comprises a take-up-lever pin body and an eccentric section eccentrically arranged at one end of the take-up-lever pin body. The eccentric section is parallel to the axis of the take-up-lever pin body, the take-up-lever pin body is arranged in the take-up-lever pin hole, and the eccentric section is connected with the take-up-lever assembly. The take-up-lever pin hole and the adjusting shaft hole are coaxially arranged, the take-up-lever pin can be connected with a take-up-lever assembly only by arranging the take-up-lever pin into an eccentric structure, the take-up-lever pin hole and the adjusting shaft hole can be machined at the same time through one drilling tool, two-time clamping is not needed, machining is easy and convenient, and precision is high.

The utility model discloses a machine head of a full-automatic sewing machine for an automobile trim panel. The device mainly comprises a machine head baffle, a machine head baffle 2, an upper thread clamping assembly, a presser foot assembly, a cylinder 1, a cylinder joint, a machine head mounting base body, a circuit board mounting plate, an electromagnetic valve, a board card mounting plate, a presser foot sliding rail, a presser foot limiting block, a motor mounting plate, a synchronous pulley 1, a synchronous belt, a machine head mounting base plate, a needle bar upper guide sleeve, a machine head shell, a tensioning assembly, a sensor support and a bearing seat. The device comprises a bearing seat support, a synchronous pulley assembly and a needle bar assembly. The upper wire clamping assembly is installed on the machine head shell. The presser foot assembly is mounted on the machine head shell; the tensioning assembly is mounted on the machine head mounting base plate; the synchronous pulley assembly is mounted on the main shaft; the needle bar assembly is arranged on the machine head shell; the sewing machine head with the thread trimming function is efficient and reliable, stable sewing of a machine is guaranteed, production efficiency is greatly improved, and product quality is improved.

The utility model provides a sewing machine thread tension adjusting device and an adjusting device control system which are applied to a sewing machine. The thread tension adjusting device comprises a driving assembly, a thread trapper shaft, a thread picking spring assembly, a driven thread clamping assembly, a driving thread clamping piece, an elastic body and a pressing cap, and one end of the thread trapper shaft is connected with the driving assembly. One end, far away from the driving assembly, of the yarn trapper shaft sequentially penetrates through the yarn picking spring assembly, the driven yarn clamping assembly, the driving yarn clamping sheet and the elastic body and then is connected with the pressing cap; an upper thread of the sewing machine penetrates between the driving thread clamping piece and the driven thread clamping assembly. The driving thread clamping piece and the pressing cap are arranged at the two ends of the elastic body respectively, and the end faces, close to the elastic body, of the driving thread clamping piece and the pressing cap are smooth planes, so that stress of the elastic body is uniform, stability of thread tension is guaranteed, tension parameters needing to be set during sewing can be reduced, and the probability of stitch skipping and thread breaking is effectively reduced.

The utility model discloses a thread picking mechanism for sewing machine relates to sewing machine technical field, including thread picking lever, thread picking connecting rod and thread picking cam, one end of thread picking lever is fixedly connected with the connecting block, is equipped with the card hole on the connecting block, be provided with the sliding plate in thread picking connecting rod, the sliding plate sliding connection is in thread picking connecting rod, and the one end of sliding plate is through the one side of thread picking connecting rod to the outside of thread picking connecting rod, one end of sliding plate is fixedly connected with the L shaped clamping plate, the one end away from L shaped clamping plate of thread picking connecting rod is equipped with the sliding slot, the L shaped clamping plate sliding connection is in the sliding slot, the utility model discloses buckle type connection, when replacing thread picking lever, only need to pull out the sliding plate, can complete dismounting and installation in short time.

The utility model discloses a feeding needle take-up mechanism and a flat seaming machine, the feeding needle take-up mechanism comprises a feeding needle swing pin and a feeding needle swing connecting rod, one end of the feeding needle swing connecting rod is provided with a rotating sleeve, and the rotating sleeve is rotatably sleeved on the feeding needle swing pin; a first grease groove is formed in the outer side face of the needle feeding swing pin and used for storing lubricating grease to lubricate the needle feeding swing pin and the needle feeding swing connecting rod. Original oil lubrication is changed into grease lubrication, sewing material pollution caused by oil leakage of lubricating oil in the sewing process can be avoided, abrasion caused by reduction of the amount of the lubricating oil can be avoided, and the sewing quality and the lubrication effect are both improved.

The present application proposes a sewing machine in which an upper thread mechanism and a lower thread mechanism rotate in coordination for sewing, and specifically relates to the technical field of sewing machine manufacturing. The sewing machine has an upper thread mechanism, a lower thread mechanism and a needle plate, wherein the upper thread mechanism and the lower thread mechanism rotate in coordination with the machine needle as the central axis for sewing, and the lower thread mechanism has a fixed seat connected to the needle plate; the upper thread mechanism is mounted and fixed on the output shaft of the upper thread drive motor, and the upper thread drive motor rotates with the machine needle as the central axis, and the lower thread mechanism is mounted on the output shaft of the lower thread drive motor, and the lower thread drive motor rotates with the machine needle as the central axis. The rotary intelligent sewing machine of the present application cleverly separates the upper thread mechanism and the lower thread mechanism in structure and power. The sewing of the special stitches of the sewing machine of the present application is effective, and can be applied to the sewing of different sewing products, and the special sewing function can also be applied to different sewing machines, which has high practicality and a broad market prospect.