358results about "Pressers" patented technology

The invention provides a cloth stem-crossing detection sewing device and method. The cloth stem-crossing detection sewing device comprises a first presser foot rod provided with an outer presser foot, a second presser foot rod provided with an inner presser foot, a presser foot transmission mechanism, a control module, a sewing material thickness detection sensor, an alternating quantity adjusting mechanism, an alternating quantity detection sensor and an alternating quantity adjusting driving source. The sewing material thickness detection sensor is obliquely mounted at the bottom of the sewing machine shell; detection points, falling on the sewing material, of the sewing material thickness detection sensor are distributed on the rear sides of the outer presser foot and the inner presser foot in the feeding direction of forward feeding during forward sewing of the sewing machine; the presser foot transmission mechanism is provided with a transmission swing seat for determining the alternating quantity of presser feet, and the alternating quantity adjusting driving source is connected with the transmission swing seat through the alternating quantity adjusting mechanism. The sewing material thickness is effectively detected in advance, so that the presser foot alternation amount is adjusted in time, the presser foot alternation amount of the sewing machine adapts to the change of the sewing material thickness, efficiency is improved, stem-crossing stitches are beautified, and sewing quality is guaranteed.

A sewing machine external unit includes: a holder holding fabric; a driver being detachable from a bed of a sewing machine and driving the holder along an upper surface of the bed; a pressing member moving in an up-down direction according to movement of a sewing needle in the up-down direction, pressing the fabric while the sewing needle is stuck in the fabric, and rising together with the sewing needle in response to the sewing needle coming out of the fabric and rising; a position detector detecting a position of the pressing member in the up-down direction; a signal output part outputting a signal to the sewing machine; and a controller outputting a needle drive signal for driving the sewing needle from the signal output part to the sewing machine, and controlling driving of the holder and / or the sewing needle based on a detection result of the position detector.

The invention relates to an automatic sewing device and method for sound insulation cotton and hook-and-loop fastener adhesive tape, the automatic sewing device comprises a feeding mechanism, a material taking mechanism, a material receiving mechanism, a material pressing mechanism, a template machine and a discharging mechanism, the input end of the material taking mechanism is arranged relative to the output end of the feeding mechanism; the output end of the material taking mechanism and the output end of the material receiving mechanism are arranged relative to the input end of the material pressing mechanism, the discharging mechanism is arranged relative to the output end of the material pressing mechanism, and the template machine is arranged relative to the material pressing mechanism. According to the design, the feeding mechanism, the material taking mechanism, the material receiving mechanism, the material pressing mechanism and the discharging mechanism are integrated, full-process automatic operation can be achieved, all the mechanisms work cooperatively, human intervention is reduced, the sewing consistency of sound insulation cotton and hook-and-loop fasteners is effectively improved, and the product quality stability is guaranteed; and meanwhile, each mechanism can realize respective independent operation, so that invalid waiting time is avoided, the procedure connection efficiency is greatly improved, and the efficient mass production requirement is met.

The invention relates to a sewing machine and a cloth pricking stroke adjusting device thereof. The cloth pricking stroke adjusting device comprises a driving mechanism, and an output shaft of the driving mechanism rotates to drive a presser foot lifting cam and an adjusting crank to rotate to a working position; the working positions comprise at least one adjusting position of the presser foot lifting cam and at least one adjusting position of the adjusting crank; the adjusting position of the presser foot lifting cam corresponds to the upper limit position and the lower limit position of the foot lifting module; the adjusting crank is hinged to the adjusting connecting rod, the adjusting position of the adjusting crank corresponds to the target angle of the adjusting crank, and the driving mechanism drives the adjusting crank to swing to the target angle, so that the position of the fixed end of the adjusting connecting rod changes along with the target angle of the adjusting crank. By adjusting the position target of the fixed end of the connecting rod, the target cloth puncturing stroke is correspondingly adjusted, the cloth puncturing stroke adjusting device is applied to the sewing machine, and the sewing machine with the cloth puncturing stroke adjusting function is obtained.

The utility model discloses a top fly machine, which relates to the technical field of sewing machines and comprises a workbench provided with a top fly processing area for placing cloth. The sewing mechanism comprises a machine head and an X-direction driving assembly, and the X-direction driving assembly is used for driving the machine head to slide in the X direction; the cutting mechanism is arranged above the front fly machining area and comprises a first cutting driving assembly, a second cutting driving assembly, a linear cutting knife and an angle knife, the first cutting driving assembly is used for driving the linear cutting knife to vertically ascend and descend, and the second cutting driving assembly is used for driving the angle knife to vertically ascend and descend; the presser foot mechanism can be pressed down above the cloth in the front fly processing area to drag the cloth to walk in the Y direction. According to the utility model, a single sewing needle can be adopted to sew on cloth according to a U-shaped track, the cost of a machine head is reduced, a Y-shaped kerf can be processed, and the production requirement is met.

The utility model discloses a flexible freight bag sling sewing machine, and relates to the field of flexible freight bag processing, in particular to a flexible freight bag sling sewing machine which comprises a sewing machine body, the body is provided with a U-shaped supporting plate, the supporting plate is provided with a positioning strip used for supporting a flexible freight bag sling, the positioning strip is internally provided with a movable cavity, and the movable cavity is internally provided with a clamping groove. According to the flexible freight bag sewing machine, the problems that when an existing flexible freight bag sewing machine is used for sewing the hanging belts, the fixing effect on the hanging belts is poor, the hanging belts are prone to deformation, sewing lines can move, use of the flexible freight bags can be affected, and the safety of the flexible freight bags is affected are solved. Moreover, the widths of different suspenders are different, and the required positions of suture lines are also different.

The invention relates to a presser foot lifting control method of a sewing machine and the sewing machine, and the presser foot lifting control method of the sewing machine comprises the following steps: receiving a voltage value of an electronic pedal; when the sewing machine is in the first state, determining a target presser foot lifting mode and a preset presser foot lifting height according to sewing requirements; the first state comprises a sewing state; according to the voltage value and the target presser foot lifting mode, the target presser foot lifting height of the presser foot is determined; the target presser foot lifting height is smaller than or equal to the preset presser foot height. By means of the presser foot lifting device, the situation that the presser foot is collided with the machine needle in the sewing process is avoided, and meanwhile the sewing efficiency is improved by combining automatic control over the height of the presser foot lifting device.

The application relates to a height calibration method of a lifting presser foot, an electronic device and a storage medium. The height calibration method of the lifting presser foot comprises the following steps: controlling a driving member to run to a preset initial position; controlling the driving member to rotate clockwise by a first preset angle, so that the lifting presser foot runs to a first height; controlling the driving member to rotate counterclockwise by a second preset angle, so that the lifting presser foot runs to a second height; subtracting the first height from the second height to obtain a height difference; and adjusting the rotation angle of the driving member, so that the height difference is within a preset height difference range. Through the application, the problem of different heights of lifting presser feet in the related art is solved, and the heights of the lifting presser feet are consistent.

The invention provides a lower thread cutting device of a flat chain seam sewing machine. According to the utility model, the problem that the operator is difficult to understand and inconvenient due to the difference that whether the tension applied to the thread by the thread trapper can be released or not by operating the pedal and operating the presser foot lifting rod due to the presence or absence of the lower thread cutting device can be solved. The lower thread cutting device is provided with a lower thread cutting operation mechanism (5) which enables the thread loosening mechanism (4) and the lower thread cutting mechanism (3) to operate, and a presser foot lifting operation mechanism (6) which does not enable the lower thread cutting mechanism (3) to operate and enables the thread loosening mechanism (4) and the presser foot lifting mechanism (2) to operate. Therefore, the force of the thread trapper (11) can be released by operating the pedal plate with a foot regardless of the presence or absence of the off-line cutting device.

This utility model relates to the field of sewing machine presser foot technology, and discloses a widened feed presser foot for sewing machines. It includes a presser foot body with an adjustment groove inside. A guide foot is fixedly connected to one side of the presser foot body, and an adjustment assembly is provided inside the presser foot body. The adjustment assembly includes an extension rod, which is slidably connected inside the adjustment groove. An extension foot is fixedly connected to one side of the extension rod, and a fastening bolt is threaded inside the extension rod. A butterfly knob is fixedly connected to the top of the fastening bolt. In this utility model, the extension foot is adjusted and limited within the adjustment groove via the extension rod. After the extension foot is adjusted to the correct position, the fastening bolt is simply rotated using the butterfly knob, causing the fastening bolt to screw into the extension rod and abut against the presser foot body. This achieves the effect of easily adjusting the width of the presser foot, solving the problems of narrow presser feet easily causing fabric shifting, uneven feed due to vibration, difficulty in aligning with the fabric, and a small force-bearing area, thus improving the practicality of the presser foot.

The utility model relates to the technical field of knitting, and provides a vibration cutter device for a template sewing machine, which comprises a controller, a mounting plate connected with a machine head body on a frame of the template sewing machine, a cutter mechanism, a lifting mechanism, a presser foot mechanism, a first driving mechanism and a cloth feeding mechanism, the vibrating cutter is arranged in the first rotating seat in a penetrating mode, a cutter of the vibrating cutter can penetrate out of the bottom of the first rotating seat and penetrate through a groove in the middle of a presser foot of the presser foot mechanism to cut cloth on a template sewing machine workbench, and the cloth feeding mechanism comprises a second fixing seat, a second rotating seat, a rotating shaft, a first cloth feeding wheel, a second cloth feeding wheel and a second driving mechanism. The first cloth feeding wheel and the second cloth feeding wheel penetrate out of the top face of the second rotating base and are located on the two sides of the cutter groove respectively, and the first cloth feeding wheel and the second cloth feeding wheel are located under the presser foot and matched with the presser foot to clamp and convey cloth. The cutting knife of the template sewing machine solves the problems that when a cutting knife of an existing template sewing machine is used for cutting cloth, wrinkles are prone to being generated, and the cutting precision is poor.

The synchronous gear ring cloth feeding mechanism facilitating cloth positioning comprises a presser foot support, a motor, a positioning plate, a gear ring and a gear, a limiting guide rail is arranged at the bottom of the presser foot support, the gear ring is embedded in the limiting guide rail, the motor is fixed on one side of the presser foot support, an output shaft of the motor is connected with the gear, and the gear is meshed with the gear ring. A presser foot plate extends out of the front end of the presser foot support, the positioning plate is arranged on one side of the presser foot plate, the positioning plate is inserted on the presser foot support and comprises a pressing plate and a positioning block, the positioning block is located on the outer side of the pressing plate, and the thickness of the positioning block is larger than that of the pressing plate. The cloth is driven by the gear ring to move forwards, so that displacement of the upper layer and the lower layer of the cloth due to no driving force is avoided; meanwhile, a positioning plate is arranged on the outer side of the presser foot plate to position and limit the outer side of the cloth, so that the track of a sewing needle is always parallel to the outer edge of the cloth, skewing of a sewing thread is avoided, and the sewing effect is guaranteed; and the positioning plate can be replaced, so that the device can be conveniently used under sewing thread widths of different specifications.

The double-concealed-thread sewing presser foot comprises a presser foot handle and a presser foot plate, a first needle falling area and a second needle falling area are arranged on the presser foot plate, a rope penetrating area is further arranged on the presser foot plate and located between the first needle falling area and the second needle falling area, and the rope penetrating area is connected with the first needle falling area and the second needle falling area to form a material wrapping penetrating hole. The inlet of the core rope is formed between the two needle falling areas, so that the core rope can be wrapped by the wrapping material in advance and double hemming is performed for sewing, the core rope is prevented from being deformed, and the sewn edge wrapping strip is rounder and has a stereoscopic impression.

The utility model provides a feeding upper pulling machine, including: casing, needle bar mechanism, presser foot mechanism and feeding mechanism, the inside of casing is provided with rotatable main shaft to drive needle bar mechanism to do reciprocating motion, the presser foot mechanism is provided with presser foot drive source and can independently rotate presser foot wheel, in addition, the feeding mechanism is installed in the casing, and the feeding mechanism is installed in the casing. The feeding device comprises a driving shaft, a feeding shaft, a feeding driving source, a feeding wheel and a steering assembly, the driving shaft is transversely connected to the feeding driving source, the feeding shaft is longitudinally installed on the machine shell, the feeding driving source drives the driving shaft to transversely rotate, and the steering assembly drives the feeding wheel to rotate. The steering assembly can convert transverse rotation into longitudinal rotation so as to drive the feeding shaft and the feeding wheel to synchronously and longitudinally rotate, so that the needle bar mechanism, the presser foot mechanism and the feeding mechanism can independently operate, and then an internal mechanism of a conventional upper pulling machine can be effectively replaced; therefore, the space configuration of the needle rod mechanism and the feeding mechanism in the machine shell can be improved.

A sewing machine includes a needle bar, a needle plate formed with a needle hole, a presser bar, a sewing machine motor, a presser motor, and a controller. The controller is configured to perform a first-stitch operation of, at start or restart of sewing, driving the sewing machine motor to move the needle bar from a lower needle position to an upper needle position, and then driving the presser motor to move the presser bar from a lowered position to a normal position. The controller is configured to perform a second-stitch operation of, based on a detection result of movement of a sewing workpiece placed on the needle plate, driving the sewing machine motor to move the needle bar in the upper-lower direction in a state where the presser bar is located at the normal position.

The utility model discloses a positioning mechanism of a sewing machine, which comprises a platform, a sewing module fixedly connected to the top of the platform, and cloth placed on the top of the platform and waiting for sewing of the sewing module, connecting blocks are fixedly connected to two sides of the back of the platform, and pressing plates are movably connected to the inner sides of the connecting blocks through pin shafts. The side, away from the connecting block, of the pressing plate extends to the top of the platform and makes contact with the surface of the cloth, and the surface of the pressing plate is hollowed out. Through the integrated design of the platform, the sewing module, the cloth, the connecting block, the pressing plate and other components, accurate positioning and fixing of the cloth are achieved, the pressing plate can swing according to needs and release or fix the cloth due to the movable connection design of the pressing plate, and therefore the positioning requirement in the sewing process is met, and in addition, the sewing efficiency is improved. The hollowed-out design of the surface of the pressing plate allows stitches of the sewing module to penetrate through the cloth for sewing, and the stitches are not hindered by the pressing plate.

This invention relates to the field of sewing machine technology, and discloses a thread-releasing and presser foot lifting mechanism for a sewing machine and a sewing machine. The mechanism includes a thread-releasing assembly for opening the thread clamp and a presser foot lifting assembly. The thread-releasing assembly includes a top plate rotatable around a pivot and a thread-releasing pin. The top plate is driven to rotate around the pivot by the presser foot lifting assembly, thereby causing the thread-releasing pin to open the thread clamp and perform a thread-releasing action. The presser foot assembly includes a presser foot rod and a presser foot. The presser foot lifting assembly includes an adjusting block fixedly mounted on the presser foot rod and a manual presser foot lifting component. A toggle block is provided on the rear side of the adjusting block. The presser foot assembly also includes an adjusting component for adjusting the presser foot lifting height and pressure. By using the top plate and the thread-releasing pin, when the presser foot is lifted by the presser foot lifting assembly, it is driven to rotate around the pivot, thereby causing the thread-releasing pin to open the thread clamp and perform a thread-releasing action. This ensures that the thread clamp automatically completes the thread-releasing action during the presser foot lifting process, thus simplifying the structure and improving working accuracy.

This utility model discloses an intelligent presser foot structure that can be independently controlled up and down, including a shaft extending horizontally through the housing and a bushing extending vertically through the housing. A drive motor is installed inside the housing, and the output shaft of the drive motor is connected to a main gear column. A driven gear column is connected to the rear end of the shaft, and the main gear column and the driven gear column mesh. The drive motor is signal-connected to a controller, which controls the reciprocating rotation amplitude of the drive motor output shaft after receiving control commands. The bushing extends out of the housing and is connected to the presser foot. A lifting rod is connected to the front end of the shaft, and a bushing block is connected to the bushing. A transmission arm is provided between the lifting rod and the bushing block. The presser foot is driven by the drive motor, and the cooperation between the presser foot and the sewing needle can be arbitrarily adjusted. When dealing with fabrics of different thicknesses, the reciprocating rotation amplitude of the drive motor output shaft can be adjusted according to the thickness gradient, thereby adjusting the height of the presser foot. This effectively solves the problem of presser foot height cooperation, reduces the frequency of skipped stitches and thread breakage during sewing, and improves sewing quality.

This invention relates to a mechanism and its working method for simultaneously controlling the stitch pitch and lifting the presser foot using a stepper motor. It addresses the problems of low precision, difficulty in adjusting the stitch pitch, and cost savings. The technical solution of this invention includes: a stitch pitch drive wheel and a presser foot lifting cam assembly are provided at the output shaft end of the stepper motor; a stitch pitch driven wheel is provided on the stitch pitch cam shaft; a U-shaped groove is provided on the extension line of the center hole of the stitch pitch driven wheel; two fan-shaped notches are fixed symmetrically on both sides of the U-shaped groove; a stitch pitch cam connecting rod connects the stitch pitch driven wheel and the stitch pitch adjustment frame; a knee control rod is provided on the left side of the stepper motor output shaft; the top of the knee control rod is connected to a knee control lifting lever; a presser foot lifting sliding block is provided on the hexagonal head screw of the lifting clamp; the presser foot lifting sliding block has a square notch; and circular through holes are arranged on both sides of the notch; the small hole end of the Z-shaped presser foot lifting cam rod is fixed to the presser foot lifting sliding block by a pin; one end of the pin is fixed with an E-type retaining spring.

An automatic feeding lockstitch sewing machine belongs to the technical field of lockstitch sewing machine feeding equipment for textile manufacturing, comprises a fixed base, a lockstitch sewing main machine, a control panel, an electromagnetic sheet, a rotating device, a connecting device and a pressing device, and is characterized in that the lockstitch sewing main machine is connected to the middle of the left edge of the upper surface of the fixed base; a control panel is connected to the middle of the right side of the upper surface of the lockstitch sewing main machine, electromagnetic sheets are symmetrically connected to the middles of the right sides of the front and rear surfaces of the fixed base, a rotating device is inserted in the middle of the right side surface of the fixed base, and a connecting device is inserted in the middle of the inner side surface of the rotating device; a pressing device is inserted in the middle of the upper surface of the connecting device, a worker can quickly install the feeding device at different positions of the lockstitch sewing machine at any time, meanwhile, the feeding device can be assembled and disassembled without an auxiliary tool, and the feeding device can be suitable for feeding materials to the lockstitch sewing machine in different directions.

A sewing machine that suppresses sewing defects is provided. The sewing machine includes: a sewing needle, held by a needle bar and moving back and forth while holding an upper thread; a shuttle, configured to hold a bobbin around which a lower thread is wound and which is housed in a bobbin case, and cooperating with the sewing needle to form a seam; a presser foot member, configured to press a to-be-sewn article at a sewing position directly below the sewing needle; a feeding mechanism, feeding the to-be-sewn article from the sewing position to a first direction; a needle drive portion, provided separately from a belt drive portion to synchronously move the sewing needle and the presser foot component in the first direction; and a control portion, which controls so that the needle drive portion and the belt drive portion operate independently.

Sewing machine (100), including: a needle vertical movement mechanism which moves a needle bar up and down; a sewing machine motor (16) which drives the needle vertical movement mechanism as a drive source; a transporter holder (32) which holds a transporter (31) which transports a workpiece on a needle plate; a horizontal transport mechanism which receives a driving force from the sewing machine motor (16) and transmits a horizontal back-and-forth movement to the feed dog support (32); and a vertical transport mechanism which imparts a vertical back-and-forth movement to the transporter holder (32), wherein the horizontal transport mechanism includes a transport adjustment motor (57) which changes and adjusts the division of the horizontal reciprocating movement by the sewing machine motor (16) with respect to the feed dog support (32), the vertical transport mechanism comprises a vertical transport motor (66) which provides the vertical reciprocating movement with respect to the transporter support (32) as a drive source, the sewing machine (100) includes a control device (90) which controls the feed adjustment motor (57) and the vertical feed motor (66) in order to cause the feed dog (31) to transport the workpiece, the control device (90) controls the vertical transport motor (66) in such a way that the feed dog (31) performs a circular movement along a predetermined path in synchronization with a rotation angle of a main shaft which is rotatably driven by the sewing machine motor (16), and controls the vertical transport motor (66) in such a way that a path of the feed dog (31) in a transport section is corrected according to a rotation speed of the main shaft.

The utility model provides a sewing machine with needle spacing adjustment and positioning swing seat zero position, specifically relates to sewing machine manufacturing technical field. Including drive source and swing seat zero position positioning mechanism, its characterized in be, drive source drives the slider on the output shaft indirectly to swing seat and executes swing seat zero position positioning. The utility model discloses a sewing machine with needle spacing adjustment and positioning swing seat zero position has the characteristics of high precision of positioning swing seat zero point position compared with prior art, and the static positioning wheel is fixed with the adjusting dynamic wheel, makes the operation more stable, the clearance of each component is smaller after positioning, the mechanical wear degree of each component is smaller, and the noise is relatively lower, has the advantages of stable operation, the drive source of the utility model preferably uses the step motor or servo motor, so that the drive source can be smoothly realized under the intelligent control program of sewing machine, has higher popularization and use value.

The application provides a cloth cutting control method, device and equipment of a lock eye machine and a storage medium. The method comprises the following steps: determining a cloth cutting entry position and a cloth cutting exit position according to an obtained sewing pattern; starting a sewing process; and controlling the cloth cutting tool to move downward along a vertical direction when a needle moves to a preset position, wherein the cloth moves along a horizontal direction during the sewing process, and the cloth cutting tool contacts the cloth when the cloth cutting tool is at the cloth cutting entry position in the horizontal direction. The cloth cutting tool is controlled to move up and down along the vertical direction when the cloth cutting tool moves downward along the vertical direction to a lowest position point, and the cloth cutting tool moves up and down along the vertical direction until the cloth cutting tool is at the cloth cutting exit position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the thickness of the cloth. The method simplifies the calculation process of the cloth cutting tool during cloth cutting, solves the problems of spindle speed reduction, stitch deformation and the like caused by the downward pressing type cloth cutting, improves the sewing and cloth cutting efficiency, and ensures the appearance of the finished product.

The bag-making sewing machine comprises a supporting plate, a sewing machine body is fixedly connected to the position, close to the right side, of the top of the supporting plate, a through groove is formed in the position, close to the left side, of the top of the supporting plate, sliding grooves are formed in the front side wall and the rear side wall of an inner cavity of the through groove, and four vertical grooves are formed in the tops of the sliding grooves; a movable plate is arranged at the position, close to the bottom, of an inner cavity of the through groove, through mutual cooperation of a swing plate, a connecting plate, a spring, a movable block and other structures, the connecting plate can be moved left and right, the connecting plate drives a fixed block and the movable block to move, and the connecting plate drives a limiting plate to move through the spring; a packaging bag material is placed between the connecting plate and the limiting plate, the connecting plate and the limiting plate limit and press the packaging bag material, and the sewing stability of the packaging bag material is guaranteed.

The utility model belongs to the technical field of button sewing machines, and relates to a structure capable of trimming a thread first and then lifting a presser foot for a button sewing machine, which comprises a rack, a thread trimming device and a presser foot lifting device, a driving motor is arranged on the rack, a driving wheel is fixed on a rotating shaft of the driving motor, and the driving wheel is connected with the thread trimming device and the presser foot lifting device. The thread trimming device and the presser foot lifting device are movably connected with the driving wheel through the starting plate, the driving wheel rotates to sequentially drive the thread trimming device and the presser foot lifting device, a thread trimming groove and a presser foot lifting groove are formed in the starting plate and communicate with each other, and the thread trimming device and the presser foot lifting device are arranged on the starting plate. And the driving wheel is provided with a rolling shaft which is matched with the thread trimming groove and the presser foot lifting groove for use. The utility model aims to provide the structure which is used for the button sewing machine, can solve the problem of complex structure, and is short in thread end after thread trimming.

The application provides a presser foot slow descent control method, system, electronic device and sewing machine. The method comprises: obtaining target data; the target data comprises a target position, a current position and a preset slow descent position of a presser foot; the preset slow descent position is a preset pause position of the presser foot; comparing the target position and the preset slow descent position to obtain a comparison result; if the comparison result indicates that slow descent is needed, lowering the presser foot from the current position to the target position according to a preset slow descent strategy; and if the comparison result indicates that slow descent is not needed, lowering the presser foot from the current position to the target position according to a closed-loop control algorithm. The presser foot lowering speed can be effectively reduced for an electromagnet presser foot lifting mechanism, and noise is reduced. Meanwhile, the application range is wide, and the application is suitable for different electromagnet presser foot lifting mechanisms, such as flat sewing and overlock sewing.

This utility model discloses a lifting device for a sewing machine presser foot, including a drive mechanism, a transmission assembly, and a presser foot connecting component. The drive mechanism is located below the sewing machine, with its bottom engaging with the operator's thigh to convert the pushing action of the thigh into driving force. The transmission assembly has a rotatable shaft located at the bottom of the sewing machine on the side away from the presser foot. The top of the drive mechanism is connected to the first end of the transmission assembly, and the second end of the transmission assembly has the presser foot connecting component. When the drive mechanism is pushed along the length of the sewing machine, it rotates around the transmission assembly as its central axis, causing the presser foot connecting component to move up and down along the height of the sewing machine. This utility model's drive mechanism, located below the sewing machine and engaging with the thigh to convert the pushing action into driving force, drives the presser foot connecting component to rise and fall via the transmission assembly. This frees up the hands, has a compact structure, smooth transmission, and improves operational convenience and efficiency.

The invention provides a material pressing template of a sewing mechanism. The material pressing template comprises a first rack, a lifting module, a second rack, a lower-stage discharging plate, an upper-stage discharging plate, a small pressing plate driving mechanism, a small pressing plate, a large pressing plate driving mechanism and a large pressing plate. The upper-stage discharging plate, the small pressing plate and the large pressing plate which can move independently are arranged, the lifting module is matched to drive the upper-stage discharging plate, the small pressing plate driving mechanism and the large pressing plate driving mechanism to drive the small pressing plate and the large pressing plate to turn over, and step-by-step and region-by-region pressing of multiple layers of cut-parts is achieved. By means of the design, dislocation caused by friction force between the cut-parts in the pressing process is effectively avoided, the device is particularly suitable for occasions where high-precision sewing needs to be conducted on multi-layer cut-part cloth, and the sewing quality and the production efficiency are remarkably improved. The invention further provides a sewing mechanism.