52results about "Pressers" patented technology

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.

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.

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 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 utility model belongs to the technical field of template machine relates to a truss belt template machine, including the head, be provided with the belt feeding mechanism, auxiliary presser foot mechanism and cutting mechanism on the head, the belt feeding mechanism draws truss belt to the bowl type presser foot in auxiliary presser foot mechanism, the cutting mechanism includes displacement cylinder, cutting cylinder and cutting blade, the displacement cylinder sets up in one side of auxiliary presser foot mechanism and drives cutting cylinder and cutting blade and moves between standby position and work position, when cutting cylinder and cutting blade move to work position, cutting blade is located bowl type presser foot's just below and is driven by cutting cylinder and cuts truss belt. The truss belt template machine provided by the utility model is equipped with special cutting mechanism, improves sewing efficiency, and reduces labor intensity.

The utility model discloses a sewing machine presser foot belongs to sewing machine accessory technical field, specifically includes presser foot main part and gasket, is equipped with the adhesive layer between gasket and presser foot main part, and the both ends of presser foot main part are all equipped with the clamping slot downwards, and the slot wall on the middle part of each clamping slot is equipped with a positioning slot, too. The both ends of gasket are equipped with the card station, and the position corresponding every positioning slot in the middle part of card station has the positioning lug of integrated molding. The utility model discloses, and the clamping slot is opened out integrally at the front, rear both ends of presser foot respectively, and can effectively promote the stability of assembly between gasket and presser foot simultaneously in the cooperation setting of positioning slot and positioning lug, with the cooperation of clamping slot and card station, and the cooperation of positioning slot and positioning lug, even under the situation of high frequency vibration, can effectively prevent gasket and appear front, back, left, right displacement, and then combine the auxiliary fixing of adhesive layer, can effectively promote the stability of assembly between gasket and presser foot.

The application provides a zipper sewing template and an automatic zipper feeding machine. The zipper sewing template comprises a bottom plate, a partition plate, a pressing plate and a connecting assembly. The bottom plate is provided with a long strip-shaped first sewing port along a first path. The partition plate is rotatably connected to one side of the bottom plate. The partition plate is provided with a second sewing port. The partition plate and the bottom plate are vertically attached to clamp and fix the cloth. The pressing plate is rotatably connected to one side of the partition plate. The pressing plate is provided with a avoiding port for avoiding the sewing needle. The pressing plate and the partition plate are vertically attached to clamp and fix the cloth tape of the zipper. The connecting assembly is arranged on the bottom plate and is used for connecting and fixing the partition plate and the pressing plate. The zipper sewing template provided by the application uses the partition plate and the pressing plate to respectively fix the cloth and the zipper in the whole process. The connecting assembly is used for fixing the partition plate, the pressing plate and the bottom plate. The pressing plate is always pressed downward to tightly press the zipper. The staff does not need to manually press the zipper all the time, so that the labor intensity is reduced and the sewing efficiency is increased.

This application relates to the technical field of sewing machines, and in particular to a presser foot assembly and an overlock sewing machine. The presser foot assembly includes a presser foot frame and a presser foot plate. The presser foot frame has a presser foot head; the presser foot plate rests upward against the presser foot head and is capable of swinging up and down around the presser foot head. The presser foot plate has a starting state and a working state. When the presser foot plate is in the starting state, it is tilted upward, and the presser foot head is perpendicular to the presser foot plate. When the presser foot plate is in the working state, it swings upward or downward around the presser foot head. When the presser foot plate of this application encounters sequined fabric with a thicker stem, the sequined fabric can pass smoothly under the presser foot plate, preventing the thicker sequined fabric from accumulating at the presser foot plate. This allows the overlock sewing machine using this presser foot assembly to be suitable for overlock sequined fabrics with thicker stems.

This utility model discloses an anti-arching sewing mechanism, including a frame. From front to back, the frame is equipped with an active roller assembly, a tension adjusting device, and a sewing device. The tension adjusting device includes two symmetrical first pillars fixedly connected to the top of the frame. Each first pillar has a vertically oriented groove, and a screw is vertically rotatably connected to the inner wall of the bottom of the groove. This utility model utilizes the tension adjusting device and a first motor to drive a worm gear and screw transmission structure to dynamically adjust the material tension path length and precisely control the material tension, preventing arching caused by uneven tension, improving sewing quality and finished product quality. Simultaneously, a hydraulic rod on the mounting plate drives the sewing device to move up and down, allowing it to quickly contact the material to perform the sewing action or quickly detach from the material for easy material replacement and position adjustment, improving the convenience and efficiency of the sewing operation.

The utility model relates to the technical field of sewing, in particular to an automatic stem reversing device and a sewing machine. An automatic stem pouring device is used for automatic stem pouring of materials and at least comprises a linear driving piece and a shifting piece used for stem pouring of the materials. The rotating mechanism comprises a mounting seat and a rotating seat, a rotating groove is formed in the mounting seat, the rotating seat is rotationally mounted in the rotating groove and connected with the linear driving part so as to be driven by the linear driving part to rotate relative to the mounting seat in the rotating groove, and the shifting piece is fixed to the rotating seat and can move along with the rotating seat; and the downward pressing transmission mechanism is arranged on the rotating mechanism and used for enabling the rotating seat to move towards the material stem position along the axis of the rotating groove when the mounting seat rotates so as to drive the shifting piece to perform downward pressing movement towards the stem position and perform stem pouring. Through the arrangement of the rotating mechanism, linear driving of the linear driving piece is converted into rotating downward pressing movement of the shifting piece towards the stem position, and operation is convenient while space is saved.

The utility model belongs to the technical field of edge covering machine, concretely relates to a kind of edge covering machine for textile finished product production and processing, including work platform, the top of work platform is equipped with sewing machine, the top of work platform is also rotationally connected with rotating column, the outside of rotating column is movably connected with rotating frame, rotating frame is used to conduct edge covering strip, the outside of rotating column is equipped with pullback subassembly, pullback subassembly is used to pull back edge covering strip, pullback subassembly includes the top plate fixed in the top of rotating column, the bottom of top plate is fixed with at least one second clamping block, the top of rotating frame is fixed with multiple first clamping block corresponding with second clamping block, the top of work platform and located the outside of rotating column is fixed with installation shell.The utility model can accurately control the tightness degree of edge covering strip, avoid wrinkling when edge is sewn with cloth due to tension slack, greatly improve product appearance quality, and can adjust edge covering strip tension, adaptability adjustment according to different batch fabric characteristics.

This utility model relates to the field of sewing machine technology and discloses a sewing machine head, including a housing with a cavity open at one end. An end cap is provided at the opening of the cavity. A presser foot bar and a needle bar, with their lower ends extending out of the housing, are arranged side-by-side within the cavity. The extended end of the presser foot bar is provided with a presser foot. A presser foot lifting mechanism is provided within the cavity for raising the presser foot. The presser foot lifting mechanism includes an adjusting block on the presser foot bar and a manual presser foot lifting assembly on the inner wall of the cavity. An adjusting assembly for adjusting the presser foot lifting height and pressure is provided at the top of the housing. The adjusting assembly allows for better adjustment of the height the presser foot is raised by the manual presser foot lifting assembly and the pressure the presser foot applies to the fabric. Compared to existing sewing machines where the end cap needs to be removed for presser foot lifting height adjustment, this sewing machine head allows for adjustment without removing the end cap. The adjustment operation is simple and convenient, requiring no special tools such as screwdrivers, which is beneficial for practical use.

The utility model discloses a presser foot bottom plate, a composite presser foot and a sewing machine in the technical field of sewing machines. A filling groove is arranged on the contact surface of the presser foot bottom plate, and a filling layer made of a material different from that of the presser foot bottom plate is arranged in the filling groove. The bottom surface of the filling layer is located below the contact surface of the presser foot bottom plate, and the distance between the bottom surface of the filling layer and the contact surface is L, where 0 < L ≤ 0.2 mm. The utility model adopts a composite structure, which not only enables the composite presser foot to have the service performance of a plastic presser foot and the service life of a metal presser foot at the same time, but also can reduce the processing precision requirements for the presser foot bottom plate and lower the production cost.

The utility model discloses a kind of edge folding cutting machines, including rack and the table top being set on rack, still include folding mechanism, adsorption mechanism, tablet extension mechanism, tablet jacking mechanism, material taking transfer mechanism and sewing main shaft mechanism;The folding mechanism is set on table top, and the bidirectional folding of fabric is realized by folding plate;The adsorption mechanism is set below table top, and fabric is fixed by air hole negative pressure adsorption;The tablet extension mechanism and tablet jacking mechanism are respectively set in table top side and below, and the local area of fabric is held by the cooperation of both;Material taking transfer mechanism is straddled between table top and sewing main shaft mechanism, for transferring folded fabric. The positioning, folding, transfer, sewing and other key processes of fabric are integrated on a device, realize the continuous automatic operation from laying to sewing forming, greatly reduce manual intervention. Each mechanism is cooperated by time sequence and space, ensure that process connection is smooth, improve processing efficiency and folding accuracy.

The utility model relates to the field of clothing manufacturing, in particular to a sewing machine tooth fork assembling jig. The utility model provides a sewing machine tooth fork assembling jig which can conveniently carry out auxiliary positioning on a presser foot and a machine needle, ensure the accuracy of an installation position and improve the coaxiality of the presser foot and the machine needle. A sewing machine fork assembling jig comprises a base, a sewing machine and the like, and the upper side of the rear portion of the base is connected with the sewing machine. According to the utility model, the overturning die is inserted into the base, the clamping block is used for centering and positioning the machine needle, the positioning clamping block is used for clamping the machine needle, the positioning block is moved, taken out and horizontally rotated, and then the positioning block is inserted into the limiting piece, so that the mounting position of the presser foot is aligned with the fixed frame; the effects that auxiliary positioning can be conveniently carried out on the presser foot and the machine needle, it is ensured that the installation position is accurate, and the coaxiality of the presser foot and the machine needle is improved are achieved.

This application discloses a triangular needle sewing device for wavy lace, including a sewing worktable and a machine body, the machine body being mounted on the sewing worktable; a presser foot connecting rod is connected to the end of the machine body, and the presser foot connecting rod is connected to a presser foot assembly; the presser foot assembly includes a mounting base, a first presser foot, and a second presser foot, the mounting base being connected to the presser foot connecting rod, and the first and second presser feet being mounted on the bottom of the mounting base; a width adjustment structure is provided between the first and second presser feet, the first and second presser feet being adapted to different widths of lace sewing paths through the width adjustment structure. By providing a width adjustment structure between the two presser feet, the distance between the two presser feet can be flexibly adjusted to meet the sewing paths of different needles, eliminating the step of changing presser feet of different specifications, enabling the sewing equipment to meet the sewing of different wavy lace, thereby improving sewing efficiency.

This application relates to a method, electronic device, and storage medium for calibrating the height of a pressure foot. The method includes: controlling a drive component to move to a preset initial position; controlling the drive component to rotate clockwise by a first preset angle, causing the pressure foot to move to a first height; controlling the drive component to rotate counterclockwise by a second preset angle, causing the pressure foot to move to a second height; calculating the difference between the first height and the second height to obtain a height difference; and adjusting the rotation angle of the drive component to ensure that the height difference is within a preset height difference range. This application solves the problem of inconsistent pressure foot heights in related technologies, achieving consistent pressure foot heights.

This utility model relates to the field of sewing assistance technology and discloses a precision sewing and positioning fixture for reflective strips in mountaineering clothing production. It includes a base plate, a pressure plate placed on top of the base plate, and a support plate fixedly installed on one side of the upper surface of the base plate. The pressure plate has four sets of sewing openings on both sides, each in a strip shape. A groove is provided on the front side of the pressure plate. A limiting groove is provided in the middle of the support plate. This utility model, by incorporating a damping hinge, a pressure plate, and a base plate, allows the reflective strip and sleeve fabric to be laid flat on the base plate, within the coverage area of ​​the pressure plate. After laying, the damping hinge allows force to be applied to rotate a horizontal plate, which in turn moves the pressure plate until it presses flat onto the sleeve fabric. The sewing head of an external sewing mechanism then moves along the sewing opening to sew. Compared to existing manual pressing and pushing sewing methods, this prevents over-sewing and indirectly improves garment quality through precise sewing.

This technical solution belongs to the field of sewing machine technology, specifically relating to a presser foot device for a sewing machine, including a machine head housing; a presser foot mechanism slidably mounted on the machine head housing for pressing the fabric; and a pressure adjusting mechanism mounted on the machine head housing and connected to the presser foot mechanism. The pressure adjusting mechanism includes: a pressure adjusting drive component mounted on the machine head housing; a pressure adjusting crank rotatably mounted on the machine head housing, with one end of the crank connected to the drive end of the pressure adjusting drive component; and a lower spring mounted between the presser foot mechanism and the other end of the pressure adjusting crank. The pressure of the presser foot mechanism on the fabric is adjusted by regulating the extension and contraction of the lower spring through the pressure adjusting drive component. This allows the pressure of the presser foot mechanism to change accordingly when dealing with fabrics of different thicknesses. The combination of mechanical transmission and digital adjustment improves the accuracy of pressure regulation. Simultaneously, it simplifies the tedious process of manually adjusting the presser foot mechanism pressure, saving time and effort and improving production efficiency.

The application discloses a double-station feeding mechanism and a sewing machine, and relates to the technical field of sewing equipment. In order to solve the problem that the moving slider of the existing sewing machine is prone to fail to move to the position during the sewing process, the double-station feeding mechanism comprises a feeding frame, the feeding frame is connected with a guide rail assembly at one end of a rack shaft through a connecting piece, the guide rail assembly comprises a mounting plate connected with the rack shaft, the mounting plate is provided with a guide rail extending along the X direction and a slider sliding along the guide rail, the slider is connected with the connecting piece, a first driving device is arranged at a first end of the mounting plate, an output end of the first driving device is connected with the slider, a feeding table assembly is rotationally connected with the rack shaft, the feeding table assembly is arranged perpendicularly to the mounting plate, the feeding table assembly is provided with a limiting groove extending along the X direction, a moving slider is arranged in the limiting groove, the moving slider is connected with a second driving device, the second driving device and the first driving device are located at the same end of the mounting plate and are both connected with a controller signal.

The utility model discloses a roll collar structure of krag, including krag machine still including the needle plate and presser foot connected with krag machine, the needle plate is located the top of presser foot, the needle plate has the pull cylinder installation mouth, the presser foot has the pull cylinder avoidance mouth, just the pull cylinder avoidance mouth with pull cylinder installation mouth opposite setting, wherein, the pull cylinder avoidance mouth's one side wall has the guide slope. The utility model is when the presser foot will the piece of clothing lightly press to the presser plate, and the pull cylinder of krag machine is located the pull cylinder installation mouth, and the piece of clothing is lifted up by the pull cylinder avoidance mouth, when the pull cylinder rotates, utilizes the friction between the pull cylinder and the piece of clothing to drive the piece of clothing to move steadily forward, and, setting the guide slope on the one side of pull cylinder avoidance mouth, is used for guiding the piece of clothing to go forward, can effectively avoid the piece of clothing to appear the wrinkle phenomenon when moving forward, improves the flatness of collar finished product, and further improves the aesthetic degree.

A fastener tape (3) and a cloth (101) are sewn to each other along a second virtual line (G2) parallel with a first virtual line (G1) determined from a direct contact between two or more fastener elements (4) and a sewing machine foot (200). The fastener tape (3) and the cloth (101) are sewn to each other along a fourth virtual line (G4) parallel with a third virtual line (G3) determined from a direct contact between a plastic member (10) and the sewing machine foot (200). The plastic member (10) has a guide surface (11) that the sewing machine foot (200) contacts such that the first and third virtual lines (G1, G3) extend on the same line to form one guide line (L1) and the second and fourth virtual lines (G2, G4) extend on the same line to form one planned sawing line (F2).

This invention belongs to the field of down jacket anti-feather leakage technology, and discloses a device for reinforcing and securing the seams of down jackets to prevent feather leakage. The device includes a work platform with a sewing machine head installed in the center. A needle is installed at the end of the sewing machine head. Through the coordination of structures such as a down-pressing plate, a fabric-pressing plate, a pusher block, and a needle plate, the device facilitates precise positioning and sewing of the filled down jacket fabric. During positioning, the sewn edges of the fabric are aligned with the pusher block. Then, the down-pressing plate is inserted between the two layers of fabric to press in the down filling. The upper fabric is held by the fabric-pressing plate, and the lower fabric is pressed against the base plate by a clamping plate. Both ends are pressed tightly by the needle plate to prevent displacement. The pusher block is pushed at a uniform speed according to the sewing speed. At this time, the entire fabric moves forward with the base plate, and the down filling is continuously and evenly pressed inward by the down-pressing plate, facilitating overlock sewing and ensuring no down is trapped at the seam, thus reinforcing the seams.

The utility model discloses a kind of lift pressure foot mechanisms, including press bar and front lever, front lever is provided with lift pressure column, and the abutting portion is arranged between the lift pressure column of front lever and press bar, and the abutting portion is used to keep the abutment of press bar and the lift pressure column of front lever;Or, press bar is provided with press bar sleeve, and the abutting portion is arranged between press bar sleeve and the lift pressure column of front lever, and the abutting portion is used to keep the abutment of press bar sleeve and the lift pressure column of front lever;By abutting portion, the abutment of press bar or press bar sleeve and the lift pressure column of front lever is always realized, prevent the gap after press bar lifting due to the thickness problem of cloth, to prevent press bar and / or press bar sleeve and the lift pressure column of front lever directly collide in the operation process to produce noise, improve the operation comfort of operation process, prevent long-time collision from causing parts damage simultaneously, improve overall service life.

This invention discloses a pressing device for a baby carrier machine and a method for sewing baby carriers and buttons. The pressing device includes a feeding plate, a liftable mounting base, a left and right linear drive mechanism, a snap fastener plate, a presser foot, and a pressure plate. The snap fastener plate has a stepped groove, the stepped surface of which allows buttons to slide into from back to front. The presser foot is located above the stepped groove. The left and right linear drive mechanism drives the pressure plate to move in the left and right direction, and the rear end of the pressure plate can press down on the end of the baby carrier. The pressure plate presses the end of the baby carrier onto the button, preventing the end of the baby carrier from lifting or shifting, and ensuring the quality of longitudinal sewing. The pressure plate is away from the presser foot and away from the stepped groove, ensuring smooth transverse sewing and sewing quality. The method for sewing baby carriers and buttons includes the following steps: button feeding, baby carrier feeding, pressing down on the end of the baby carrier and the baby carrier, longitudinal sewing, loosening the end of the baby carrier and the baby carrier, and transverse sewing.

In a sewing machine presser foot device that uses air pressure from an air cylinder to press the presser foot, the aim is to improve the appearance of the sewing machine. [Solution] The presser foot device 5 of a sewing machine comprises an arm 2 forming the upper part of the sewing machine frame 1, a head 3 positioned on the left side of the arm 2, a side cover 4 positioned on the left side of the head 3, a presser bar 6 pivotally supported by the side cover 4 so as to be vertically movable, a presser base 7 positioned below the head 3 with its upper part in contact with the presser bar 6, and a presser foot 8 attached to the tip of the presser base 7. The presser foot device 5 further comprises a presser crank 9 positioned above the presser bar 6 and having an L-shape with one end in contact with the upper end of the presser bar 6, an air cylinder 11 positioned at the rear of the head 3 with a cylinder rod 11a in contact with the other end of the presser crank 9, and a regulator connected to the air cylinder 11.

This invention provides a conveniently maintained positioning presser foot, comprising a presser foot bracket, a connecting block, a presser foot plate, and a limiting baffle. The connecting block is rotatably connected to the top of the presser foot bracket via a rotating shaft, and a spring is provided between the presser foot bracket and the connecting block. The bottom of the presser foot bracket has a mounting groove, and the top of the presser foot plate is fitted into this groove. A T-pin is provided on one side of the limiting baffle, and a rotation limiting hole is opened on the presser foot bracket. The T-pin passes through the rotation limiting hole, allowing the limiting baffle to be rotatably connected to the presser foot bracket. A spindle is located above the side of the presser foot bracket closest to the limiting baffle, and a torsion spring is fitted on the spindle. The two ends of the torsion spring are fixed to the presser foot bracket and the limiting baffle, respectively. This invention, by providing a mounting block on the top of the presser foot plate, utilizes the elastic deformation of the material to make the presser foot plate detachable, facilitating replacement and avoiding the inconvenience of replacing the entire presser foot assembly due to wear, thus reducing replacement costs.

The utility model discloses a magic tape suture device, including frame, sewing machine, coaxial setting has work surface material disc and basic surface material disc on the frame, the work surface conveying channel and the basic surface conveying channel of parallel setting are set up to the frame on the opposite work surface material disc and basic surface material disc correspondingly, is provided with work surface cutting device on the work surface conveying channel, is provided with basic surface cutting device on the basic surface conveying channel, sets up work surface conveying clamp on the work surface conveying channel side, sets up pre -fixing mechanism and material conveying clamp on the basic surface conveying channel side, and the movable frame is set up below the sewing machine, and the material conveying channel that sets up with basic surface conveying channel alignment is set up on the movable frame, still sets up suture pressure strip mechanism and suture pressure block mechanism on the material conveying channel side. Its advantages are: realize the automatic processing of magic tape, and can suture the four edges of magic tape, can effectively improve the reliability of magic tape product, can improve production efficiency greatly.

This invention provides a sewing machine presser foot device that reduces costs while also allowing for accurate measurement of fabric thickness. [Solution] A magnet 9 is attached to the presser foot 2 midway along its longitudinal direction via a bracket 10. A Hall sensor unit 5 is attached to the left side of the sewing machine frame 1 via a bracket 8, and the Hall sensor 6 is positioned opposite the magnet 9. The Hall sensor 6 is a Hall effect linear sensor, and the magnet 9 is positioned so that its magnetic poles, corresponding to the polarity of the Hall sensor 6, face the Hall sensor 6.