85results about "Leather sewing" patented technology

The utility model discloses a leather glove processing sewing machine with a hand pressing prevention function, and relates to the technical field of sewing machines, the leather glove processing sewing machine comprises an adjusting mechanism, the adjusting mechanism comprises a working table, a collecting groove is formed in one side of the top of the working table in a penetrating mode, a knob is arranged on one side of the working table, a lead screw is arranged in a clamping groove formed in the working table, and a clamping groove is formed in the other side of the working table; a bearing seat is arranged at the end, away from the rotary knob, of the lead screw, two moving blocks are arranged outside the lead screw, and sliding blocks are arranged on the two sides of the two moving blocks. The adjusting piece is rotated clockwise to drive the pressing plate to press downwards, the leather gloves laid on the placing table can be pressed and fixed, the situation that the hands of an operator hold the leather gloves is avoided, the risk that the hands are crushed by a needle head is reduced, the screw rod is driven to rotate by rotating the rotary knob, and then the leather gloves on the placing table can move synchronously, so that the safety of the operator is improved. The purpose of sewing the leather gloves is achieved.

A robot and a method for sewing an object. The robot includes a robotic arm configured to hold a needle. The needle is tied with a thread. The robot includes a controller configured to move the needle, wherein the object includes a flexible outer surface and pre-stitches formed on the outer surface. Each of the pre-stitches includes a thread section including a top side and an opposite bottom side facing the outer surface. The controller is configured to perform a sewing operation by causing the needle to go across the thread section along a path defined between the bottom side of the thread section and the outer surface of the object.

An apparatus and method for applying stitches to a decorative component having a three dimensional configuration is provided. A head for applying stitches to a decorative component having a three dimensional configuration, including: a needle bar assembly operatively coupled to the head; a looper configured to cooperate with the needle bar assembly in order to provide a plurality of stitches in the decorative component, the looper rotating in a plane parallel to the decorative component; a post assembly configured to drive the looper in a reciprocating fashion in the plane, wherein the post assembly is operatively coupled to a motor configured to drive the needle bar assembly in a reciprocating fashion, the post assembly being operatively coupled to the head via a cylinder arm assembly and a downshaft assembly; and wherein the cylinder arm assembly is rotated in a synchronized manner with a rock frame through mechanical linkage connecting a rock frame drive shaft to the cylinder arm assembly.

The utility model provides a sole sewing machine. The shoe sole sewing machine comprises a working wheel and a pressing wheel. Materials to be sewn are pressed between the working wheel and the pressing wheel through the pressing wheel, the pressing wheel is pressed in a normal state during working, and the automatic arm lifting assembly can drive the materials to be lifted partially or completely so as to exit the pressing state. The automatic arm lifting assembly comprises an arm lifting driving piece used for driving the automatic arm lifting assembly to act, and the arm lifting driving piece is arranged on the outer side of a shell of the upper pulling machine. According to the shoe sole sewing machine, the problem that the lifting arm driving piece is prone to failure due to the influence of lubricating materials is solved by moving the lifting arm driving piece to the outside of the shell of the upper pulling machine. Therefore, the long-term work of the lifting arm driving piece can be ensured. And meanwhile, the specific position of the lifting arm driving piece can be reasonably arranged on the outer side of the shell to optimize the boundary dimension of the equipment.

The invention discloses a sewing device for reinforcing luggage corners, and belongs to the technical field of sewing machines, the sewing device comprises a supporting frame, the lower end of the supporting frame is connected with a fixed lifting assembly, the middle of a top plate of the supporting frame is connected with an edge extension driving assembly, and the lower end of the top plate of the supporting frame is connected with a switchable edge extension limiting assembly; the lower end of the edge extending driving assembly is connected with a bending and edge covering assembly, the upper end of the bending and edge covering assembly is connected with a self-bending driving assembly, the luggage is positioned, fixed and lifted to make contact with the bending and edge covering assembly through the fixing and lifting assembly, and at the moment, the edge extending driving assembly is started; the edge extension driving assembly drives the self-bending driving assembly to move under the limiting of the switchable edge extension limiting assembly, the self-bending driving assembly automatically drives the bending and edge covering assembly to fold the edge covering cloth and wrap the edge of the luggage, at the moment, the edge extension driving assembly covers the edge of the luggage, and automatic edge extension and edge covering of the luggage are achieved.

To provide a leather fabric formed so as to have good appearance by making continuous sewing machine stitches by lock stitch sewing on a surface using relatively thick multifilament yarn.SOLUTION: A leather product is formed by making sewing machine stitches by lock stitch sewing on a leather fabric, and has a first yarn constituting the sewing machine stitches on a first surface on the front side of the leather fabric, and a second yarn constituting the sewing machine stitches on a second surface on the rear side of the leather fabric. Thickness of the leather fabric is 2 to 12 millimeters. The first yarn and the second yarn are multifilament yarns. Thickness of the first yarn is 1600 to 4000 dtex and thicker by 600 dtex or more than the second yarn. Thickness of the second yarn is 1000 to 1800 dtex. Knot between the first yarn and the second yarn is located closer to a second surface in a thickness direction of the leather fabric.SELECTED DRAWING: Figure 2

The utility model relates to the technical field of garment processing. A twill quilting line template comprises a foldable middle plate, a left plate and a right plate, the left plate and the right plate are rotatably mounted on two sides of the middle plate, the left plate and the right plate can be folded towards the middle to be pressed on the middle plate, symmetrical twill quilting lines are arranged on the left plate and the right plate, and hollow grooves corresponding to the twill quilting lines on the left plate and the right plate are formed in the middle plate. The utility model provides a twill quilting template which can effectively improve quilting efficiency and finished product quality, can finish quilting through one template, and is convenient to operate and use. The technical problems that in the prior art, the effect of PU leather during twill quilting is difficult to guarantee, common flatcar twill quilting cloth is prone to twist and deformation, the quality is seriously affected, and the processing efficiency is low are solved.

The invention relates to the technical field of sewing machines and discloses a bag sewing machine which comprises a sewing machine body, a limiting assembly is installed on the right side of the sewing machine body, a limiting cylinder is installed in the sewing machine body, a needle head is installed in the limiting cylinder through a bolt, and a base is slidably connected to the bottom of the sewing machine body. A stabilizing assembly is installed in the base, a supporting assembly is installed at the top of the base, a feeding assembly is installed in the supporting assembly, the stabilizing assembly comprises a U-shaped toothed plate, and two deflection gears are connected to the surface of the U-shaped toothed plate in an engaged mode. By arranging the stabilizing assembly, an adjusting lead screw is rotated firstly, so that a U-shaped toothed plate moves in the vertical direction, a deflection gear rotates under the meshing action of the U-shaped toothed plate, a long rod drives an abutting plate to deflect, and therefore one side of the abutting plate abuts against the top of the workbench, and the device can be more stable when working; and the working stability of the device is improved.

The utility model discloses a shoelace or stripping auxiliary device which is characterized in that the shoelace or stripping auxiliary device comprises an auxiliary plate detachably arranged on a sewing machine, the sewing machine comprises a sewing table, a cloth feeding wheel and a machine needle aligned to the sewing table, and the upper portion of the auxiliary plate is provided with a transverse strip guide through hole allowing a shoelace or stripping to penetrate through. And the transverse strip guide through hole is positioned above the sewing table and is aligned with the machine needle. The transverse strip guide through hole of the shoelace or stripping auxiliary device is formed according to the width of the shoelace or stripping, when the shoelace or stripping auxiliary device is used, the shoelace or stripping only needs to penetrate through the transverse strip guide through hole and is placed among a sewing table, a cloth feeding wheel and a machine needle, then a sewing machine is started, the transverse strip guide through hole has a guide function on the shoelace or stripping, a sewing thread is smoother, and the production efficiency is improved. The quality of the shoelace or the drawn strip after sewing is guaranteed, the shoelace or the drawn strip does not need to be manually held in the sewing process, the labor intensity of workers is greatly reduced, and only a new shoelace or a new drawn strip needs to be placed after the shoelace or the drawn strip is sewn.

To form continuous and attractive machine stitches on the surface of a leather fabric using a comparatively thick multifilament thread with a lock stitch.SOLUTION: The manufacturing method of a leather product includes a thread preparation step of preparing an upper thread and a lower thread for a sewing machine, a placement step of placing the leather fabric on a needle plate with the back side facing up, and a sewing step of sewing the leather fabric with a lock stitch. The thickness of the leather fabric is 2 to 12 millimeters. The upper thread and the lower thread are multifilament threads. The thickness of the upper thread is 1000 to 1800 decitex. The thickness of the lower thread is 1600 to 4000 decitex, which is 600 decitex or more thicker than the upper thread. In the thread preparation step, the tension of the upper thread is adjusted to 15 to 21 newtons, and the tension of the lower thread is adjusted to 1 to 2 newtons.SELECTED DRAWING: Figure 3

Presented are automated manufacturing systems for fabricating engineered textiles, footwear and apparel formed with such engineered textiles, methods for making such engineered textiles, and memory-stored, processor-executable instructions for operating such manufacturing systems. An automated manufacturing system constructs engineered textiles from workpieces composed of superposed, unwoven wires. The system includes a movable end effector bearing a stitching head and an image capture device. The stitching head has a thread feeder and sewing needle to generate stitches. The image capture device captures images of the workpiece and outputs data indicative thereof. A system controller receives this image capture device data and locates, from the captured image of the workpiece, gaps defined between quadrangles of the superposed wires. The controller commands the end effector to sequentially move the stitching head and thereby align the sewing needle with the gaps, and commands the stitching head to insert a succession of stitches within these gaps.

The utility model discloses a shoe material delivery mechanism for shoemaking equipment, which comprises a machine body and a sewing table for placing the machine body, the machine body is provided with a sewing part for sewing external shoemaking materials, the sewing table is provided with a delivery mechanism, the position of the sewing table corresponding to the delivery mechanism is provided with a through hole, and the through hole is communicated with the delivery mechanism. The conveying mechanism comprises a first part correspondingly arranged above the through hole, a second part correspondingly arranged below the through hole and a motor used for driving the second part to move, the first part and the second part are matched to convey the external shoemaking material towards the sewing part, and the first part is in contact with the second part; the contact position of the first part and the second part and the end, facing the sewing table, of the sewing part are arranged on the same horizontal line with the upper table top of the sewing table, the shoe material conveying mechanism for the shoemaking sewing machine can roll and press shoe materials to enable the shoe materials to enter the sewing link smoothly, stitch skipping is not prone to occurring, and conveying is stable and convenient.

The invention relates to the technical field of seat cover processing, and discloses a leather sewing device for automobile seat cover production, which comprises a sewing table, a pressing plate is arranged above the sewing table, a longitudinal sliding groove is formed in the right upper part of the pressing plate, a mounting seat is slidably connected in the longitudinal sliding groove, and a sewing machine is fixedly mounted on the surface of the mounting seat. The sewing end of the sewing machine corresponds to the right edge of the pressing plate. When two pieces of leather need to be sewn, the first hydraulic rod is controlled to extend to drive the lifting frame and the pressing plate to move downwards, the two pieces of leather can be pressed, then the sewing machine slides on the surface of the longitudinal sliding groove, the purpose of pressing and sewing the two pieces of leather is achieved, the sewing quality of the chair cover is ensured, and in the using process, the sewing efficiency is improved. The transverse lead screw is driven by the servo motor to rotate, and the positions of the transverse moving seat and the pressing plate can be transversely adjusted, so that the position of leather located on the bottom side of the pressing plate is conveniently adjusted, and convenience is provided for sewing work.

An automated manufacturing system for constructing an engineered textile from a workpiece composed of superposed wires, the manufacturing system comprising: a movable end effector; a processing head mounted to the movable end effector; a position sensor configured to determine real-time positions of the processing head and output sensor signals indicative thereof; and a system controller operatively connected to the movable end effector, the position sensor, and the processing head, the system controller being programmed to: determine a plurality of joint locations for the superposed wires; command the movable end effector to sequentially move the processing head to align the processing head with each of the joint locations; receive, from the position sensor, the sensor signals indicative of the real-time positions of the processing head; determine, from the received sensor signals and a captured image of the workpiece, an estimated distance between each of the real-time positions of the processing head and a next adjacent one of the joint locations; estimate a plurality of desired trajectories for the processing head each based on the estimated distance between the real-time position of the processing head and the respective next adjacent one of the joint locations; and command the processing head to join the superposed wires at the joint locations to form the engineered textile.

An automated manufacturing system (300) for constructing an engineered textile (132) from a workpiece (132') composed of superposed wires (140, 142), the manufacturing system (300) comprising: a movable end effector (302); a stitching head (310) mounted to the movable end effector (302) and including a thread feeder (316) and a sewing needle (320) cooperatively configured to generate stitches; an image capture device (330) mounted to the movable end effector (302) and configured to capture an image of the workpiece (132') and output data indicative thereof; and a system controller (304) operatively connected to the movable end effector (302), the stitching head (310), and the image capture device (330), the system controller (304) being programmed to: receive, from the image capture device (330), the data indicative of the captured image of the workpiece (132'); locate, from the captured image of the workpiece (132'), multiple gaps each defined between a respective quadrangle of the superposed wires (140, 142); command the movable end effector (302) to sequentially move the stitching head (310) to thereby align the sewing needle (320) with each of the gaps; and command the stitching head (310) to insert a succession of stitches within the gaps between the superposed wires (140, 142).

According to the luggage splicing technology based on the tenon-and-mortise concave-convex structure, all luggage materials and novel suture line materials (such as artificial science and technology new materials) are covered, machining is conducted by means of the 3D cutting and carving technology, the precision is adjusted according to the material characteristics, and the thickness after splicing is consistent with that of a single-layer material. The technology breaks through the limitation of a traditional process, inherits the mortise and tenon culture, assists in building a Chinese luxury luggage brand and promotes culture output, and is suitable for splicing luggage and related products.

To suppress positional deviation in stitches in a skin.SOLUTION: A manufacturing device of skin with stitch includes: a skin receiving jig 1 having a three-dimensional-shaped receiving surface 7 for receiving a three-dimensional-shaped skin 40, and a fixing device (adsorption device) for fixing the skin 40 which the receiving surface 7 has received; a sewing machine 20 for sewing stitches on the skin 40; a robot 30 for taking out the skin from the skin receiving jig 1, moving it to the sewing machine 20 and feed-driving it; and a control device for controlling the sewing machine 20 and the robot 30.SELECTED DRAWING: Figure 1

A robot (200) for sewing an object (290),comprising: a robotic arm (220) configured to hold a needle (280), the needle (280) tied with a thread (285) in advance, and a controller (210) configured to move the needle (280), wherein the object (290) includes a flexible outer surface (297) and pre-stitches formed on the outer surface (297), each of the pre-stitches includes a thread section (292) including a top side (293) and an opposite bottom side (295) facing the outer surface (297), and the controller (210) is configured to perform a sewing operation by causing the needle (280) to go across the thread section (292) along a path defined between the bottom side (295) of the thread section (292) and the outer surface (297) of the object (290). By the robot (200) for sewing object (290), automatic sewing using a needle (280) can be realized with reduced scratches. A method for sewing an object (290) is also provided.

An automated manufacturing system (300) for constructing an engineered textile (132) from a workpiece (132') composed of superposed wires (140, 142), the manufacturing system (300) comprising: a movable end effector (302); a stitching head (310) mounted to the movable end effector (302) and including a thread feeder (316) and a sewing needle (320) cooperatively configured to generate stitches; an image capture device (330) mounted to the movable end effector (302) and configured to capture an image of the workpiece (132') and output data indicative thereof; and a system controller (304) operatively connected to the movable end effector (302), the stitching head (310), and the image capture device (330), the system controller (304) being programmed to: receive, from the image capture device (330), the data indicative of the captured image of the workpiece (132'); locate, from the captured image of the workpiece (132'), multiple gaps each defined between a respective quadrangle of the superposed wires (140, 142); command the movable end effector (302) to sequentially move the stitching head (310) to thereby align the sewing needle (320) with each of the gaps; and command the stitching head (310) to insert a succession of stitches within the gaps between the superposed wires (140, 142).

The present invention proposes an auxiliary processing part of a shoe upper decoration structure, comprising an upper plywood and a lower plywood spaced apart, an M-shaped covering strip channel formed between the upper plywood and the lower plywood, and two V-shaped decorative strip channels formed on the lower side of the lower plywood; a first sewing groove is provided at a position corresponding to the middle of the covering strip channel on the lower plywood, and a second sewing groove is provided on both sides of the lower plywood, and the two second sewing grooves are respectively located on both sides of the covering strip channel, the first sewing groove and the second sewing groove are both arranged along the front and rear directions of the lower plywood, the rear sides of the first sewing groove and the second sewing groove both pass through the rear side of the lower plywood, and the front end of the first sewing groove is located in front of the front end of the second sewing groove; needle holes are provided on the upper plywood corresponding to the front ends of the first sewing groove and the second sewing groove, respectively, which can guide the movement of the covering strip and the decorative strip, automatically fold the covering strip, and automatically wrap the decorative strip, thereby improving the processing efficiency and molding quality of the decorative structure.

Method for sewing decorative seams with the following process steps: - the sewing dress (12) is positioned in the sewing machine (10) in such a way that the seam stub (28) of the functional seam (24), which is approximately teardrop-shaped in cross-section, runs in a seam groove (40) of the sewing machine (10), - the sewing garment (12) is fixed in the seam trench (40) by a seam sword (54) which is placed on the functional seam (24) from the side (56) of the sewing garment (12) opposite the seam trench (40), - the two reference elements (20, 22) of the sewing dress (12) connected by the functional seam (24) are brought into a position approximately perpendicular to the functional seam (24) by a presser set (50) of the sewing machine (12) and held there, - at least one decorative seam is applied parallel to the functional seam (24) by means of a sewing needle (58) positioned laterally next to the seam blade (54), - characterized in that - the seam stub (28) of the functional seam (24) is fixed approximately at the level of the functional seam (24) on both sides by a taper (48) at the upper edge area of ​​the seam trench (40).

To suppress positional deviation in stitches in a skin.SOLUTION: A manufacturing device of skin with stitch includes: a skin receiving jig 1 having a three-dimensional-shaped receiving surface 7 for receiving a three-dimensional-shaped skin 40, and a fixing device (adsorption device) for fixing the skin 40 which the receiving surface 7 has received; a sewing machine 20 for sewing stitches on the skin 40; a robot 30 for taking out the skin from the skin receiving jig 1, moving it to the sewing machine 20 and feed-driving it; and a control device for controlling the sewing machine 20 and the robot 30.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of fur processing, and discloses splicing equipment which comprises a first supporting frame, a second supporting frame is arranged on the outer side of the first supporting frame, an inserting rod is fixedly connected to the surface of the second supporting frame, the outer wall of the inserting rod is matched with the inner wall of an inserting opening, a positioning structure is arranged on the surface of the first supporting frame, and the inserting opening is matched with the inserting opening. The positioning structure comprises a rotating disc, the rotating disc is rotatably connected to the surface of the first supporting frame, a moving groove is formed in the surface of the first supporting frame, a threaded rod is rotatably connected to the inner wall of the moving groove, a moving block is in threaded connection to the outer wall of the threaded rod, and a moving plate is fixedly connected to the top of the moving block. A limiting rod is arranged at the bottom of the moving plate, a spring is fixedly connected to the bottom of the moving plate, a positioning plate is fixedly connected to the end, away from the moving plate, of the spring, an anti-skid pad is fixedly connected to the bottom of the positioning plate, and by arranging the positioning structure, the splicing efficiency of the fur is improved.

The utility model relates to the technical field of bag manufacturing, and discloses a bag manufacturing overlock machine which comprises a supporting table, an overlock machine body is fixedly installed on the edge of the top of the supporting table, an installation block is in lap joint with the outer side of the overlock machine body, a first screw pin is in threaded connection with the interior of the installation block, and a cover plate is connected to the top of the installation block in a clamped mode. A rotating shaft is rotatably connected to the interior of the mounting block, a roller is fixedly connected to the exterior of the rotating shaft, a magnet is fixedly connected to the exterior of the overlock machine, an iron block is attracted to the outer side of the magnet, and a connecting rod is fixedly connected to one side of the iron block. Compared with the prior art, the leather overlock device has the advantages that the installation block and the cover plate are both linear, leather can linearly move in the gap between the installation block and the cover plate, the installation block, the cover plate and the needle head are located on the same horizontal line, and therefore the phenomenon that the leather deviates in the overlock process can be prevented.

The leather cloth sewing equipment comprises a base, the top of the base is fixedly connected with a stand column, one side of the stand column is connected with a transverse column in a sliding mode, one side of the stand column is provided with a lifting assembly, and the lifting assembly is used for driving the transverse column to move. The lifting assembly drives the transverse column to move on one side of the stand column, the sewing machine is made to be close to leather cloth, the leather cloth is sewn according to processing requirements, meanwhile, the feeding assembly drives the discharging table to move on the top of the base, the leather cloth sewing efficiency is effectively improved, and in the sewing process, the sewing efficiency is improved. The dust collection fan operates and sucks leather scraps and dust generated by sewing into the dust collection box through the dust collection pipe, meanwhile, the dust collection frame effectively collects the leather scraps and the dust, the leather scraps and the dust are treated through the effect of the dust collection groove, and the situation that dust accumulation influences the leather cloth sewing quality and normal operation of sewing equipment is avoided; therefore, the leather cloth sewing efficiency and quality are integrally improved.

A sewing machine for sewing articles, comprising: a turret (3), constrained to a base (2), which bears a sewing needle (4), facing downwards, with the relative sewing yarn (5); first activating means, arranged in the turret, for movement of the needle; a profiled arm (8) supported, in an oscillating way, by a unit (10) borne by the base and rotatably supporting a bushing (11) located beneath the needle and open towards the needle, with the axis of the bushing being coaxial to the axis of oscillation of the arm; stabilising means (12), associated to the arm (8) destined, with the oscillation in one direction of the arm, to impress an oscillation in the opposite direction, and of equal amplitude, on the bushing (11); a rotary hook (13), located in the bushing (11); second activating means (14), acting in phase with the first activating means to draw the rotary hook in rotation for formation in the bushing, and in cooperation with the needle, with the relative sewing yarn (5), of a sewing stitch; means for connecting the unit (10) to the base (2) to enable the oscillation of the unit according to coaxial arcs of circumference the axis (C) of which intercepts the topmost point (T) reached by the end (53) of the rotary hook (13) during the course of the rotation thereof.

The invention relates to the field of upper pulling machines, in particular to an upper pulling machine for injection molding shoe production, which comprises a machine head, a machine needle assembly and a crochet needle assembly are arranged on the machine head, the machine needle assembly is used for conveying a thread group, and the crochet needle assembly is used for hooking the thread group; a feeding wheel is arranged on one side of the machine head, a blowing assembly matched with the feeding wheel is arranged on one side of the feeding wheel, and the blowing assembly is used for blowing out air to clean uppers; a dredging assembly is arranged on one side of the air blowing assembly and used for dredging a gas channel entering the air blowing assembly. A feeding wheel is arranged on one side of the machine head, a presser foot frame is arranged on one side of the presser foot frame, a presser foot wheel is arranged on one side of the presser foot frame, a guide frame is installed on the machine head, and the guide frame is used for conveying uppers into the position between the feeding wheel and the presser foot wheel in a matched mode.

A sewing machine for sewing articles, comprising: a turret (3), constrained to a base (2), which bears a sewing needle (4), facing downwards, with the relative sewing yarn (5); first activating means, arranged in the turret, for movement of the needle; a profiled arm (8) supported, in an oscillating way, by a unit (10) borne by the base and rotatably supporting a bushing (11) located beneath the needle and open towards the needle, with the axis of the bushing being coaxial to the axis of oscillation of the arm; stabilising means (12), associated to the arm (8) destined, with the oscillation in one direction of the arm, to impress an oscillation in the opposite direction, and of equal amplitude, on the bushing (11); a rotary hook (13), located in the bushing (11); second activating means (14), acting in phase with the first activating means to draw the rotary hook in rotation for formation in the bushing, and in cooperation with the needle, with the relative sewing yarn (5), of a sewing stitch; means for connecting the unit (10) to the base (2) to enable the oscillation of the unit according to coaxial arcs of circumference the axis (C) of which intercepts the topmost point (T) reached by the end (53) of the rotary hook (13) during the course of the rotation thereof.

The utility model belongs to the field of handicraft production discloses a kind of material fixing device for double needle sewing process, including the first clamping plate being fixedly arranged on ground;Second clamping plate is hingedly arranged on ground, and second clamping plate swings towards the direction close to or away from first clamping plate;Spring is fixedly connected between first clamping plate and second clamping plate, and the clamping surface of first clamping plate is abutted with the clamping surface of second clamping plate in free state;Pedal is hingedly arranged on ground, and its rotation axis is parallel with the rotation axis of second clamping plate;Pulling member is fixedly connected between pedal and second clamping plate, and the distance from the connecting point of pedal and pulling member to the connecting point of second clamping plate and pulling member is adapted to the length of pulling member.The utility model can improve the stability when material is fixed and the flexibility when leather material is finely adjusted, ensure sewing precision, improve the comfort and work efficiency of operator;The utility model is applicable to handicraft production industry, and is used for clamping material to be sewn.