Fully automatic foot-winding machine

Abstract

The present invention discloses a fully automatic hemming machine, and the key points are as follows: it includes a workbench assembly, a sewing assembly, a material supporting mechanism, an adjustable material supporting mechanism, a feeding mechanism, a material hooking mechanism and a detection mechanism. The workbench assembly includes a frame, a workbench board and a table board lifting mechanism. The workbench board is fixedly arranged on the frame through the table board lifting mechanism, and the height of the workbench board can be adjusted through the table board lifting mechanism. The sewing assembly includes a sewing head. The material supporting mechanism is used to support the fabric into a tubular shape. The adjustable material supporting mechanism is used to adjust and adapt to tubular sizes of different sizes. The feeding mechanism rotates the supported tubular fabric, so as to perform feeding. The material hooking mechanism turns the edge of the rotated fabric after being supported. The sewing head stitches and fixes the fabric after the edge is turned. The detection mechanism is used to judge the starting sewing position and the ending sewing position.

Description

Technical Field

[0001] The present invention relates to the field of sewing processing equipment, and specifically to a fully automatic hemming machine for hemming the cuffs of trousers in sewn garments and tubular parts of other garments. Background Art

[0002] A hemming machine is a sewing machine used for hemming the cuffs of trousers and tubular parts of other garments, and is widely used in garment production. When processing the end of the cuff of a pair of trousers (i.e., the lower end of the trousers), in order to be neat and beautiful, the raw edge at the lower end needs to be turned over. The usual method is to first turn the inside of the trousers to the outside, then fold the end of the cuff upwards once and then fold it again, so as to turn the raw edge to the inside to cover it, and then perform sewing. After sewing, turn the trousers back to the front. The lower end of the cuff looks flat and beautiful, and the raw edge is not easy to come off and spread after being sewn inside. Summary of the Invention

[0003] The purpose of the present invention is to provide a fully automatic hemming machine for hemming cuffs, which has a simple structure and a high degree of automation.

[0004] The basic technical solution for achieving the purpose of the present invention is: a fully automatic hemming machine, the structural features of which are: including a workbench assembly, a sewing assembly, a material supporting mechanism, an adjustable material supporting mechanism, a feeding mechanism, a material hooking mechanism and a detection mechanism. The workbench assembly includes a frame, a workbench board and a table board lifting mechanism. The workbench board is fixedly arranged on the frame through the table board lifting mechanism, and the height of the workbench board can be adjusted through the table board lifting mechanism. The sewing assembly includes a sewing head. The material supporting mechanism is used to support the fabric into a tubular shape. The adjustable material supporting mechanism is used to adjust and adapt to different tubular sizes. The feeding mechanism rotates the supported tubular fabric to perform feeding. The material hooking mechanism turns up the fabric after being supported and rotating. The sewing head stitches and fixes the turned-up fabric, and the detection mechanism is used to judge the starting sewing position and the ending sewing position.

[0005] Based on the above basic technical solution, the technical solution is: the sewing assembly includes a sewing head. A head support column is arranged on the right side of the workbench board. The sewing head is arranged along the front-rear direction on the right part of the workbench board. The left side of the sewing head is hinged to the workbench board. When performing maintenance, the sewing head is flipped open to the left to expose the corresponding lower part. After the sewing head is flipped, it is supported by the head support column.

[0006] Based on the above respective corresponding technical solutions, the technical solution is: the sewing assembly includes a sewing head and a fabric positioning mechanism. The fabric positioning mechanism includes an upper positioning plate. The upper positioning plate is vertically arranged on the sewing head along the left-right direction through a corresponding connecting seat, and the distance between the upper positioning plate and the sewing needle can be adjusted.

[0007] The technical solutions based on the above respective technical solutions are as follows: The material supporting mechanism includes a material supporting mechanism mounting seat, a first material supporting component, a second material supporting component, a third material supporting component, and a fourth material supporting component. The first material supporting component includes a first material supporting rod. The second material supporting component includes a second material supporting rod. The third material supporting component includes a third material supporting rod. The fourth material supporting component includes a fourth material supporting rod. After the first material supporting rod, the second material supporting rod, the third material supporting rod, and the fourth material supporting rod are opened, they support the fabric.

[0008] The technical solutions based on the above respective technical solutions are as follows: The first material supporting component further includes a first connecting rod and a first material supporting cylinder. The first material supporting rod is horizontally and fixedly arranged on the upper right part of the front side of the first connecting rod in the front-rear direction. A first rolling sleeve is rotatably arranged on the first material supporting rod. The lower left part of the first connecting rod is rotatably arranged on the lower part of the front side of the material supporting mechanism mounting seat. The first material supporting cylinder is hinged to the upper part of the left side of the front side of the material supporting mechanism mounting seat by its cylinder body, and the piston rod of the first material supporting cylinder is hinged to the first connecting rod, so that the first material supporting cylinder drives the first material supporting rod to swing through the first connecting rod.

[0009] The technical solutions based on the above respective technical solutions are as follows: The second material supporting component further includes a second connecting rod and a second material supporting cylinder. The second material supporting rod is horizontally and fixedly arranged on the upper front side of the second connecting rod in the front-rear direction. A second rolling sleeve is rotatably arranged on the second material supporting rod. The middle part of the second connecting rod is rotatably arranged on the right part of the material supporting mechanism mounting seat. The second material supporting cylinder is hinged to the upper part of the left side of the rear side of the material supporting mechanism mounting seat by its cylinder body, and the piston rod of the second material supporting cylinder is hinged to the lower end of the second connecting rod, so that the second material supporting cylinder drives the second material supporting rod to swing through the second connecting rod.

[0010] The technical solutions based on the above respective technical solutions are as follows: The third material supporting component further includes a third material supporting roller guiding component, a third material supporting cylinder, a guiding hook, and a positioning retaining ring. The third material supporting roller guiding component includes a third linear guide rail and a third material supporting roller mounting seat. The third linear guide rail is fixedly arranged on the upper part of the front side of the material supporting mechanism mounting seat along the up-down direction by its guide rail. The third material supporting roller mounting seat is fixedly arranged on the slider of the third linear guide rail. The third material supporting rod is horizontally and fixedly arranged on the third material supporting roller mounting seat in the front-rear direction. A third rolling sleeve is rotatably arranged on the third material supporting rod. The third material supporting cylinder is hinged to the lower part of the front side of the material supporting mechanism mounting seat by its cylinder body, its piston rod extends upward, and the upper end of the piston rod is hinged to the third material supporting roller mounting seat, so that the third material supporting cylinder drives the third material supporting roller to move up and down along the third linear guide rail of the third material supporting roller guiding component. The guiding hook is in a U shape with an opening facing backward, the guiding hook is vertically arranged in the up-down direction, and the lower end of the guiding hook is fixedly arranged on the front end of the third material supporting rod. The positioning retaining ring is coaxially fixedly arranged on the rear part of the third rolling sleeve.

[0011] The technical solution based on the above respective technical solutions is: The fourth material supporting component further includes a fourth connecting rod and a fourth material supporting cylinder. The fourth material supporting rod is horizontally and fixedly arranged on the upper front side of the fourth connecting rod in the front-rear direction. A fourth rolling sleeve is rotatably arranged on the fourth material supporting rod. The lower end of the fourth connecting rod is rotatably arranged on the upper front part of the material supporting mechanism mounting seat. The fourth material supporting cylinder has its cylinder body hinged to the upper right part of the material supporting mechanism mounting seat, its piston rod extends leftward, and the end of the piston rod is hinged to the middle part of the fourth connecting rod, so that the fourth material supporting cylinder drives the fourth material supporting rod to swing through the fourth connecting rod.

[0012] The technical solution based on the above respective technical solutions is: The adjustable material supporting mechanism includes an adjustable material supporting mechanism mounting seat, an adjustable material supporting mechanism adjusting seat, an adjustable material supporting mechanism guiding component, a first adjusting connecting rod, a fifth material supporting rod, a first fabric limiting component and a first plum blossom handle screw.

[0013] The upper side surface of the adjustable material supporting mechanism mounting seat is set to be lower on the left and higher on the right. A T-shaped groove penetrating through its left and right sides and opening upward is provided on the upper side surface. A first rectangular nut is provided in the wider groove section at the lower part of the T-shaped groove. The adjustable material supporting mechanism guiding component includes a linear guide rail. The linear guide rail is fixedly arranged on the front side of the adjustable material supporting mechanism mounting seat, is set to be lower on the left and higher on the right, and is arranged parallel to the T-shaped groove. The adjustable material supporting mechanism adjusting seat is fixedly arranged on the slider of the linear guide rail of the adjustable material supporting mechanism guiding component. The screw rod of the first plum blossom handle screw passes downward through the corresponding part of the adjustable material supporting mechanism adjusting seat and is screwed onto the first rectangular nut in the T-shaped groove.

[0014] The first adjusting connecting rod is formed by fixedly connecting two sections. The left part of the first adjusting connecting rod is fixedly arranged on the upper right part of the front side of the adjustable material supporting mechanism adjusting seat, and the height position of its right end can be adjusted. The fifth material supporting rod is horizontally and fixedly arranged on the right end of the first adjusting connecting rod in the front-rear direction. A fifth rolling sleeve is rotatably arranged on the fifth material supporting rod, and a rubber sleeve or a nylon sleeve is sleeved on the fifth rolling sleeve. The first fabric limiting component includes a first limiting flap, a first limiting flap mounting seat, a first limiting flap adjusting seat and a second plum blossom handle screw. The first limiting flap is fixedly arranged on the first limiting flap adjusting seat, and is arranged in a C shape around the nylon sleeve on the fifth rolling sleeve along the circumferential direction of the fifth rolling sleeve and has a corresponding fitting gap. The first limiting flap mounting seat is fixedly arranged on the middle part of the first adjusting connecting rod. The first limiting flap adjusting seat is slidably arranged on the first limiting flap mounting seat in the front-rear direction. The first limiting flap adjusting seat is provided with a waist-shaped hole penetrating through its upper and lower parts in the front-rear direction. The screw rod of the second plum blossom handle screw passes downward through the waist-shaped hole and is screwed onto the corresponding screw hole on the first limiting flap mounting seat.

[0015] The technical solution based on the above-mentioned corresponding technical solutions is: the adjustable material supporting mechanism also includes a sixth material supporting rod and a second cloth limiting assembly. The sixth material supporting rod is horizontally fixedly arranged on the front left part of the adjustable material supporting mechanism adjustment seat in the front-back direction, and a sixth roller sleeve is rotatably arranged on the sixth material supporting rod, and the sixth roller sleeve is covered with a rubber sleeve or a nylon sleeve.

[0016] The second cloth limiting assembly includes a second limiting baffle, a second limiting baffle mounting seat and a third plum handle screw. The second limiting baffle is fixedly arranged on the second limiting baffle mounting seat, and is arranged along the circumference of the sixth roller sleeve to surround the nylon sleeve on the sixth roller sleeve and leave a corresponding matching gap, which is used to limit the cloth. The second limiting baffle mounting seat is slidably arranged on the left part of the adjustable support mechanism adjustment seat along the front-back direction, and the second limiting baffle mounting seat is provided with a waist-shaped hole running through it from top to bottom along the front-back direction. The screw rod of the third plum handle screw passes downward through the waist-shaped hole and is screwed into the corresponding screw hole on the adjustable support mechanism adjustment seat, so that the handle of the third plum handle screw presses and fixes the second limiting baffle mounting seat on the adjustable support mechanism adjustment seat, and the front side surface of the second limiting baffle and the front side surface of the first limiting baffle are in the same flat vertical plane.

[0017] The technical scheme based on the above-mentioned corresponding technical schemes is: it also includes a material stripping mechanism. The material stripping mechanism includes a material stripping roller, a material stripping roller mounting plate, a material stripping motor, a material stripping lifting cylinder and a positioning detection device. The positioning detection device is used to detect whether the rear end of the cloth is in place. The material stripping lifting cylinder is fixedly arranged on the front side of the third material supporting roller mounting seat of the third material supporting assembly by its cylinder body in the up and down direction, and its piston rod extends downward. The material stripping lifting cylinder adopts a cylinder with a guide rod. The material stripping motor is fixedly connected to the piston rod of the material stripping lifting cylinder by its motor housing through the corresponding mounting seat, and the motor shaft of the material stripping motor extends horizontally to the right. The material stripping roller mounting plate is transmission-arranged on the motor shaft of the material stripping motor and is located below the third roller sleeve of the third material supporting assembly. There are a number of material stripping rollers, and each material stripping roller is arranged on the material stripping roller mounting plate at equal intervals along the circumference of the material stripping roller mounting plate. The axis of the material stripping roller mounting plate is perpendicular to the plane where the axis of each material stripping roller is located.

[0018] The technical solution based on the above-mentioned corresponding technical solutions is: the positioning detection device includes a material removal detection photoeye and a photoeye adjustment component. The material removal detection photoeye is arranged on the photoeye adjustment component, and the detection position of the material removal detection photoeye can be adjusted by the photoeye adjustment component.

[0019] The technical scheme based on the above-mentioned corresponding technical schemes is: the photoeye adjustment assembly includes a fixed mounting rod, a photoeye fixing seat, a photoeye adjustment seat, a photoeye adjustment screw and a photoeye adjustment guide rod. The fixed mounting rod is fixedly arranged horizontally on the right lower part of the supporting mechanism mounting seat of the supporting mechanism in the front-back direction and extends forward. The photoeye fixing seat is fixedly arranged on the front end of the fixed mounting rod. The photoeye adjustment guide rod is fixedly arranged on the photoeye fixing seat, parallel to the fixed mounting rod, and extends backward. The photoeye adjustment seat is slidably arranged on the fixed mounting rod and the photoeye adjustment guide rod. The photoeye adjustment seat is provided with screw holes running through the front and back of the photoeye adjustment screw. A positioning retaining ring is provided at the front of the photoeye adjustment screw, and an adjustment handle is provided at the front end of the photoeye adjustment screw. The part between the positioning retaining ring and the adjustment handle of the photoeye adjustment screw is rotatably arranged in the photoeye fixing seat through a resin bearing, and the rear screw is screwed into the screw hole of the photoeye adjustment seat. The photoeye adjustment screw is driven to rotate by rotating the adjustment handle, thereby adjusting the position of the photoeye adjustment seat in the front-back direction. The stripping detection photoeye is fixed on the photoeye adjustment seat and is used to detect whether the rear end of the cloth is in place.

[0020] The technical scheme based on the above-mentioned corresponding technical schemes is: the feeding mechanism includes an active feeding assembly. The active feeding assembly includes a feeding motor, a feeding roller, a first feeding driven shaft, a feeding driven shaft mounting sleeve, a second feeding driven shaft, a first feeding synchronous belt pulley, a second feeding synchronous belt pulley, a first feeding synchronous belt, a third feeding synchronous belt pulley, a fourth feeding synchronous belt pulley and a second feeding synchronous belt. The feeding motor is fixedly arranged on the right rear part of the sewing machine head of the sewing assembly, with its motor shaft facing forward, and the first feeding synchronous belt pulley is arranged on the motor shaft of the feeding motor. The second feeding driven shaft is arranged on the middle part of the sewing machine head by its axial direction along the front-back direction, the second feeding synchronous belt pulley is arranged on the rear end of the second feeding driven shaft, and the third feeding synchronous belt pulley is arranged on the front end of the second feeding driven shaft. The first feeding synchronous belt is arranged around the first feeding synchronous belt pulley and the second feeding synchronous belt pulley. The feed driven shaft mounting sleeve is fixedly arranged on the middle part of the sewing machine head along the front-back direction by its axial direction, the first feed driven shaft is rotatably arranged in the feed driven shaft mounting sleeve, and the front end of the first feed driven shaft is provided with a connecting sleeve. The fourth feed synchronous belt pulley is arranged on the rear end of the first feed driven shaft, and the second feed synchronous belt is arranged around the third feed synchronous belt pulley and the fourth feed synchronous belt pulley. The feed roller is arranged on the front part of the first feed driven shaft, located between the feed driven shaft mounting sleeve and the connecting sleeve, and located on the right side of the needle of the sewing machine head. The surface of the feed roller is arranged in a serrated shape.

[0021] The technical solution based on the above-mentioned corresponding technical solutions is that the feeding mechanism also includes a pressing material conveying assembly. The pressing material conveying assembly includes a conveying motor, a reducer, a pressing material conveying mounting seat, a pressing material conveying synchronous belt, a first pressing material conveying synchronous belt pulley, a pressing material conveying synchronous belt pulley swing arm, a first driven wheel mounting shaft, a second driven wheel mounting shaft, a second pressing material conveying synchronous belt pulley, a third pressing material conveying synchronous belt pulley, a synchronous belt pulley swing arm driving cylinder and a synchronous belt tensioning mechanism.

[0022] The pressing material conveying mounting seat is fixedly arranged on the front part of the upper right side of the sewing machine head. The reducer is fixedly arranged on the pressing material conveying mounting seat, and its output shaft is arranged in the front-back direction and extends forward. The conveying motor is fixedly connected to the rear part of the reducer by its motor housing, and the motor shaft of the conveying motor is drivingly connected to the input end of the reducer. The first pressing material conveying synchronous belt pulley is drivingly arranged on the output shaft of the reducer. The second driven wheel mounting shaft is fixedly arranged on the lower part of the pressing material conveying mounting seat in the front-back direction and extends forward. The pressing material conveying synchronous belt pulley swing arm is rotatably arranged on the second driven wheel mounting shaft from its middle part. The first driven wheel mounting shaft is fixedly arranged on the right end of the pressing material conveying synchronous belt pulley swing arm in the front-back direction and extends forward. The second pressing material conveying synchronous belt pulley is rotatably arranged on the first driven wheel mounting shaft and is located above the feed roller. The third pressing material conveying synchronous belt pulley is rotatably arranged on the second driven wheel mounting shaft and is located in front of the pressing material conveying synchronous belt pulley swing arm. The press material conveying synchronous belt is arranged around the first press material conveying synchronous belt pulley and the second press material conveying synchronous belt pulley, and is driven by a meshing belt that passes around the third press material conveying synchronous belt pulley from the lower right side. The synchronous belt pulley swing arm driving cylinder is hingedly connected to the upper right part of the press material conveying mounting seat by the upper end of its cylinder body, and its piston rod extends downward, and the lower end of the piston rod is hingedly connected to the left end of the press material conveying synchronous belt pulley swing arm, so that the synchronous belt pulley swing arm driving cylinder drives the second press material conveying synchronous belt pulley to be lifted or pressed down through the press material conveying synchronous belt pulley swing arm.

[0023] The synchronous belt tensioning mechanism includes a tensioning wheel mounting shaft, a tensioning wheel, a lower pressure arm, a compression spring mounting rod and a tensioning compression spring. The lower pressure arm is hingedly connected to the lower rear part of the press material conveying mounting seat by its rear end. The tensioning wheel mounting shaft is fixedly arranged on the front end of the lower pressure arm in the front-to-back direction and extends forward. The tensioning wheel is rotatably arranged on the tensioning wheel mounting shaft and is located on the right side of the press material conveying synchronous belt. A waist-shaped through hole running through the upper and lower parts of the lower pressure arm is provided in the middle part of the lower pressure arm. The lower end of the compression spring mounting rod is fixedly arranged on the lower rear part of the press material conveying mounting seat, and the corresponding part of the middle part is located in the waist-shaped through hole of the lower pressure arm. The tensioning compression spring is arranged on the compression spring mounting rod and is located on the upper side of the lower pressure arm. It is in a compressed state and is used to press the front end of the lower pressure arm downward so that the tensioning wheel is pressed against the press material conveying synchronous belt, so that the press material conveying synchronous belt remains in a tensioned state.

[0024] Based on the above respective technical solutions, the technical solution is: The sewing assembly includes a sewing head, a rear presser mechanism, and a fabric positioning mechanism. The fabric positioning mechanism includes an upper positioning plate. The upper positioning plate is vertically arranged on the sewing head in the left-right direction through a corresponding connecting seat, and the distance between the upper positioning plate and the sewing needle can be adjusted.

[0025] The rear presser mechanism includes a rear presser foot, a rear presser mechanism mounting seat, a rear presser mechanism guiding assembly, a rear presser foot driving cylinder, and a rear presser foot mounting seat. The rear presser foot is provided with a sewing notch that penetrates up and down and opens forward. The rear presser mechanism mounting seat is fixedly arranged on the sewing head and is located behind the sewing needle. The rear presser mechanism guiding assembly includes a linear guide rail. The linear guide rail is fixedly arranged on the rear side of the rear presser mechanism mounting seat by its slider. The guide rail of the linear guide rail is arranged in the up-down direction, and the rear presser foot mounting seat is fixedly arranged on the guide rail of the linear guide rail. The rear presser foot driving cylinder is fixedly arranged on the rear presser mechanism mounting seat by its cylinder block. Its piston rod extends downward, and the end of the piston rod is fixedly connected to the rear presser foot mounting seat. The rear presser foot is fixedly arranged on the rear presser foot mounting seat, so that the rear presser foot is driven by the rear presser foot driving cylinder to lift upward or press downward.

[0026] The feeding mechanism further includes a front presser mechanism. The front presser mechanism includes a front presser foot, a front presser foot mounting seat, a front presser foot swing arm, and a front presser foot driving cylinder. The front presser foot swing arm is rotatably arranged at its middle on the second driven wheel mounting shaft and is located in front of the third presser feeding synchronous belt pulley. The left end of the front presser foot swing arm is provided with an oval through hole that penetrates its front and rear. The front presser foot mounting seat is fixedly arranged on the right end of the front presser foot swing arm. The front presser foot is fixedly arranged on the front presser foot mounting seat and is located in front of the rear presser foot of the rear presser mechanism. The front presser foot driving cylinder is hinged at its upper part of the cylinder block to the upper right part of the presser feeding mounting seat. Its piston rod extends downward, and a bolt is arranged along the front-rear direction at the lower end of the piston rod. The rear part of the bolt passes through the oval through hole at the left end of the front presser foot swing arm from front to back and is fixedly screwed and fixed at the lower end of the piston rod, fixedly connecting the piston rod of the front presser foot driving cylinder to the left end of the front presser foot swing arm. Thus, the front presser foot is driven by the front presser foot driving cylinder through the front presser foot swing arm to lift or press down.

[0027] Based on the above respective technical solutions, the technical solution is: The material hooking mechanism includes a material hooking mechanism mounting seat, a material hooking hook, a first material hooking mounting seat, a first material hooking guiding assembly, a first material hooking driving cylinder, a second material hooking mounting seat, a second material hooking guiding assembly, and a second material hooking driving cylinder.

[0028] The hook material mechanism mounting seat is fixedly arranged on the middle right side of the sewing head of the sewing assembly. The second hook material guiding assembly adopts a linear guide rail, and the linear guide rail is horizontally fixedly arranged on the right side of the hook material mechanism mounting seat along the front-back direction by its guide rail. The second hook material mounting seat is fixedly arranged on the slider of the linear guide rail. The second hook material driving cylinder is fixedly arranged on the rear right side of the hook material mechanism mounting seat along the front-back direction by its cylinder body, its piston rod extends forward, and the end of the piston rod is fixedly connected to the second hook material mounting seat. The second hook material mounting seat is driven by the second hook material driving cylinder to move back and forth along the second hook material guiding assembly. The first hook material guiding assembly adopts a linear guide rail, the slider of the linear guide rail is fixedly connected to the right side of the second hook material mounting seat, and the guide rail of the linear guide rail is fixedly connected to the first hook material mounting seat along the up-down direction. The first hook material driving cylinder is fixedly arranged on the second hook material mounting seat along the up-down direction by its cylinder body, its piston rod extends upward, and the end of the piston rod is fixedly connected to the first hook material mounting seat. Thus, the first hook material mounting seat is driven by the first hook material driving cylinder to move up and down along the first hook material guiding assembly. The hook material hook is an integral part, and the hook material hook includes a connecting rod part and a hooked part. The hook material hook is horizontally fixedly arranged on the first hook material mounting seat along the front-back direction by its connecting rod part. The hooked part is in a C shape with an opening facing backward, and the opening of the hooked part is located to the left of the connecting rod part. The hooked part is inclined with the left side lower and the right side higher.

[0029] Based on the above respective corresponding technical solutions, the technical solution is: The detection mechanism includes a detection wheel, a detection wheel mounting arm, a detection rotating shaft, a rotating shaft mounting seat, a rotating shaft driving arm, a rotating shaft driving cylinder, a driving cylinder mounting seat, a rotating shaft return spring, and a bone position detection optical eye. The detection wheel is rotatably arranged at the left end of the detection wheel mounting arm, and the rotation axis of the detection wheel is horizontally arranged along the front-back direction. The rotating shaft mounting seat is fixedly arranged on the hook material mechanism mounting seat, and the detection rotating shaft is rotatably arranged in the rotating shaft mounting seat along the front-back direction. The right end of the detection wheel mounting arm is fixedly arranged at the front end of the detection rotating shaft. The left end of the rotating shaft driving arm is fixedly arranged at the rear end of the detection rotating shaft. The driving cylinder mounting seat is fixedly arranged on the rear part of the rotating shaft mounting seat and protrudes rightward. The rotating shaft driving cylinder is fixedly arranged on the driving cylinder mounting seat along the up-down direction by its cylinder body, its piston rod extends downward, and the end of the piston rod is fixedly connected to the right part of the rotating shaft driving arm. The rotating shaft return spring is arranged between the right part of the rotating shaft driving arm and the right part of the driving cylinder mounting seat and is in a stretched state. The bone position detection optical eye is fixedly arranged on the lower right side of the driving cylinder mounting seat along the front-back direction and faces forward, and is used to detect whether the right end of the rotating shaft driving arm is at the corresponding position height in front of the bone position detection optical eye.

[0030] Based on the above respective corresponding technical solutions, the technical solution is: It further includes a material supporting component. The material supporting component includes a material supporting rod. The material supporting rod is integrally in an L shape. The material supporting rod is horizontally fixedly arranged on the lower right side of the workbench plate along the front-back direction by its right part section, and the front part section of the material supporting rod is horizontally arranged along the left-right direction. A sponge sleeve is sleeved on the front part section of the material supporting rod.

[0031] The present invention has the following beneficial effects: (1) The fully automatic hem rolling machine of the present invention has a simple structure. When in use, it is only necessary to put the trouser legs that have been folded once on the sewing machine head and the corresponding material support rod, and the hooking mechanism performs the second folding and hemming, and the feeding mechanism feeds the material, and the sewing machine assembly performs the sewing. The degree of automation is high, which greatly improves the production and processing efficiency. The fully automatic hem rolling machine of the present invention can also be used for the hemming of the tubular part of other clothing.

[0032] (2) The working table of the fully automatic rolling machine of the present invention is fixed on the frame by a table lifting mechanism. The height of the working table can be adjusted by the table lifting mechanism to adapt to operators of different heights. It has strong adaptability, greatly improves the operating comfort of the operator, makes the operation smoother, and is conducive to improving processing efficiency.

[0033] (3) The left side of the sewing machine head of the fully automatic sewing machine of the present invention is hingedly connected to the work table and can be flipped open to expose the corresponding lower part. After flipping, it is supported by the machine head support column to facilitate maintenance.

[0034] (4) The fully automatic presser foot machine of the present invention is provided with a front pressing mechanism and a rear pressing mechanism, and adopts a method of separating the front and rear presser feet. The front presser foot presses the single-layer fabric part of the trouser leg, and the rear presser foot presses the three-layer fabric part after the folding edge of the trouser leg. This ensures that during sewing, the front and rear presser feet respectively press the fabric around the machine needle flat, which greatly improves the flatness after sewing and is beneficial to improving product quality.

[0035] (5) The fabric positioning mechanism of the sewing assembly of the fully automatic trouser leg sewing machine of the present invention is provided with an upper positioning plate, which is used to position the trouser leg fabric in the front-to-back direction to ensure that the sewing stitches are neat. The position of the upper positioning plate in the front-to-back direction can be adjusted, which can be applied to different requirements of sewing stitch widths and has a wide range of applications. The fabric positioning mechanism is provided with a lower positioning plate, which is used for positioning when adjusting the pick-up detection light eye.

[0036] (6) The fully automatic foot-rolling machine of the present invention is provided with a supporting mechanism and an adjustable supporting mechanism. The supporting mechanism is provided with four groups of supporting components (a first supporting component, a second supporting component, a third supporting component and a fourth supporting component). The four groups of supporting components are used in combination with the adjustable supporting mechanism, which can adapt to the supporting range of trouser legs of different sizes, ensure that the trouser legs are flat after being stretched, and have strong adaptability. In addition, the adjustable supporting mechanism is provided with a first cloth limiting component and a second cloth limiting component, which is beneficial to improving the processing quality. The fifth supporting rod of the adjustable supporting mechanism of the present invention is suitable for supporting materials for clothing of sizes for thin body types, normal body types and fat body types when used in conjunction with the supporting mechanism. The fifth supporting rod and the sixth supporting rod of the adjustable supporting mechanism are suitable for supporting materials for clothing of large sizes such as those for obese body types when used together with the supporting mechanism.

[0037] (7) The third support assembly of the support mechanism of the fully automatic trouser leg sewing machine of the present invention is provided with a guide hook, which can prevent the trouser leg from being mistakenly put between the third support rod and the lower part of the sewing machine head, ensuring that the fabric can be put on the third support rod, which is conducive to improving production efficiency. The third support assembly is provided with a positioning retaining ring, which can position the trouser leg fabric and improve the processing quality.

[0038] (8) The fully automatic trouser leg rolling machine of the present invention is provided with a feeding mechanism, which can make the trouser leg rotate around the supporting mechanism and the lower part of the machine head, so as to facilitate sewing. The feeding roller surface of the active feeding assembly of the feeding mechanism is serrated, which is used to increase the friction between the trouser leg and the cloth. When the pressing conveying synchronous belt of the pressing conveying assembly presses the trouser leg cloth onto the feeding roller, the friction between the cloth and the feeding roller can be increased, so as to prevent the trouser leg from idling and slipping when rotating, and ensure the reliability of feeding.

[0039] (9) The press-feed conveying assembly of the fully automatic roller-foot machine of the present invention is provided with a synchronous belt tensioning mechanism, which can ensure that the press-feed conveying synchronous belt is in a tensioned state to prevent idling, and can reduce the angle formed by the press-feed conveying synchronous belt around the second press-feed conveying synchronous belt pulley on the other hand (that is, the press-feed conveying synchronous belt located on the upper part of the second press-feed conveying synchronous belt pulley moves downward toward the press-feed conveying synchronous belt located on the lower part of the second press-feed conveying synchronous belt pulley), so as to facilitate installation and extend into the front part of the sewing machine head.

[0040] (10) The fully automatic trouser leg rolling machine of the present invention is provided with a detection mechanism, which can detect the bulging part (commonly referred to as bone position in the industry) on the trouser leg, thereby setting the corresponding sewing starting position and ending position.

[0041] (11) The fully automatic trouser leg machine of the present invention is provided with a material stripping mechanism. During the sewing process, when the material stripping detection light eye cannot detect the lower part of the sewing machine head, it means that the rear part of the trouser leg is attached to the front side of the positioning retaining ring, the material stripping lifting cylinder of the material stripping mechanism does not work, and the material stripping motor does not work. When the material stripping detection light eye detects the lower part of the sewing machine head, it means that there is a gap between the rear part of the trouser leg and the front side of the positioning retaining ring, so that the piston rod of the material stripping lifting cylinder of the material stripping mechanism retracts upward, so that the corresponding material stripping roller clamps the trouser leg fabric on the third roller sleeve of the third support rod, and at the same time, the material stripping motor drives the material stripping roller mounting plate to rotate, and the upper part of the material stripping roller mounting plate rotates backward, and the material stripping roller on the material stripping roller mounting plate pushes the trouser leg fabric backward, so that the rear part of the trouser leg fabric is not attached to the front side of the positioning retaining ring, ensuring that the width of the sewing stitch is consistent, greatly improving the processing quality, and further improving the degree of automation, without the need for manual intervention and correction.

[0042] (12) When the fabric is folded, there will be three layers. The linear speeds of the lower fabric in contact with the feeding roller and the upper fabric in contact with the pressure-feeding synchronous belt are different. If the same speed is used for feeding both the upper and lower parts, the upper fabric will accumulate, resulting in wrinkling. The feeding mechanism of the fully automatic hemming machine of the present invention is provided with an active feeding component and a pressure-feeding component, which are respectively driven by corresponding motors, and can achieve different feeding speeds for the upper and lower parts, ensuring that the fabric is relatively flat and greatly improving the sewing quality.

[0043] (13) The front presser foot swing arm of the front presser mechanism of the fully automatic hemming machine of the present invention is provided with a waist-shaped hole connection, which can adjust the height after the front presser foot presses down, so as to adapt to fabrics of different thicknesses and has a wide range of applications.

[0044] (14) The fully automatic hemming machine of the present invention is provided with a fabric supporting component, which can support the front part of the fabric, reduce the angle between the sagging fabric and the fabric supporting component, so that it is more smooth when the fabric rotates and is not easily twisted together. The outer circumference of the front part of the fourth roller is provided with knurling, which can increase the friction with the fabric, prevent the fabric from sliding forward, and improve the sewing quality. At the same time, the fabric supporting component also has a protective function, preventing the operator from approaching the fabric supporting component and avoiding accidental injury. Description of the Drawings

[0045] Figure 1 It is a schematic structural diagram of the fully automatic hemming machine of the present invention.

[0046] Figure 2 It is Figure 1 a left view schematic diagram.

[0047] Figure 3 It is Figure 1 a right view schematic diagram.

[0048] Figure 4 It is Figure 1 a top view schematic diagram.

[0049] Figure 5 It is a schematic diagram when observing from the Figure 1 upper left front of

[0050] Figure 6 It is Figure 1 a schematic diagram when observing from the lower right rear of

[0051] Figure 7 It is Figure 1 a schematic diagram after removing the fabric supporting component when observing from the lower right front of

[0052] Figure 8 It is Figure 1 a schematic diagram after removing the fabric supporting component when observing from the upper right rear of

[0053] Figure 9 Schematic diagram of the workbench component without the workbench board when observed from above Figure 1

[0054] Figure 10 Schematic diagram of the lifting connecting frame of the platen lifting mechanism when observed from the upper right front Figure 1

[0055] Figure 11 Schematic diagram of the active feeding component of the sewing component and the feeding mechanism when observed from the upper left front Figure 1

[0056] Figure 12 Enlarged schematic diagram of the back presser mechanism of the sewing component

[0057] Figure 13 Enlarged schematic diagram of the upper positioning plate of the fabric positioning mechanism of the sewing component

[0058] Figure 14 Enlarged schematic diagram of the active feeding component of the feeding mechanism when observed from the lower left rear Figure 1

[0059] Figure 15 Enlarged schematic diagram of the pressure feeding component of the feeding mechanism when observed from the lower left rear Figure 1

[0060] Figure 16 Enlarged schematic diagram of the pressure feeding component of the feeding mechanism when observed from the upper right front Figure 1

[0061] Figure 17 Schematic diagram of Figure 1 the material supporting mechanism in

[0062] Figure 18 Schematic diagram of Figure 17 when observed from the left

[0063] Figure 19 Schematic diagram when observed from the upper right front of Figure 17

[0064] Figure 20 Schematic diagram when observed from the upper left rear of Figure 17

[0065] Figure 21 Enlarged schematic diagram of the adjustable material supporting mechanism when observed from the upper left front of Figure 1

[0066] Figure 22 Enlarged schematic diagram of the adjustable material supporting mechanism when observed from the lower right front of Figure 1 ​​​​​​​​​​

[0067] Figure 23 An enlarged schematic view of the sewing assembly, the material hooking mechanism, and the detection mechanism when observed from the upper right front of Figure 1 .

[0068] Figure 24 Is Figure 1 An enlarged schematic view of the material hooking mechanism and the detection mechanism in

[0069] Figure 25 An enlarged schematic view of the material hooking mechanism and the detection mechanism when observed from the lower right front of Figure 1 .

[0070] Figure 26 An enlarged schematic view of the material hooking mechanism and the detection mechanism when observed from the upper left front of Figure 1 .

[0071] Figure 27 An enlarged schematic view of the material supporting mechanism and the material scraping mechanism when observed from the upper right front of Figure 1 .

[0072] Figure 28 An enlarged schematic view of the material scraping device of the material scraping mechanism when observed from the upper right front of Figure 1 .

[0073] Figure 29 An enlarged schematic view of the positioning detection device of the material scraping mechanism when observed from the upper left front of Figure 1 .

[0074] Figure 30 A schematic view of the structure when the sewing head of the sewing assembly, the active feeding assembly of the feeding mechanism, and the material supporting mechanism are in the expanded state.

[0075] Figure 31 Is Figure 30 A right view schematic of

[0076] Figure 32 An enlarged schematic view when observed from the lower right front of Figure 31 .

[0077] Figure 33 An enlarged schematic view when observed from the upper left front of Figure 31 .

[0078] The reference numerals in the drawings are:

[0079] Workbench assembly 1, frame 1-1, workbench board 1-2, head support column 1-21,

[0080] Table board lifting mechanism 1-3, lifting connecting frame 1-31, worm and worm gear box 1-32, worm shaft 1-33, crank 1-34, gear 1-35, rack 1-36, sewing assembly 2, sewing head 21, sewing needle 21-1,

[0081] Rear material pressing mechanism 22, rear presser foot 22-1, sewing notch 22-11, rear material pressing mechanism mounting seat 22-2, rear material pressing mechanism guiding component 22-3, rear presser foot driving cylinder 22-4, rear presser foot mounting seat 22-5, fabric positioning mechanism 23, upper positioning plate 23-1, material hooking rod groove 23-11, lower positioning plate 23-2,

[0082] Material supporting mechanism 3, material supporting mechanism mounting seat 3-1, decorative protective cover 3-2, first material supporting component 3a, first material supporting rod, first rolling sleeve 3a-11, first connecting rod 3a-2, first material supporting cylinder 3a-3, second material supporting component 3b, second material supporting rod 3b-1, second rolling sleeve 3b-11, second connecting rod 3b-2, second material supporting cylinder 3b-3, third material supporting component 3c, third material supporting rod, third rolling sleeve 3c-11, third material supporting roller guiding component 3c-2, third linear guide rail 3c-21, third material supporting roller mounting seat 3c-22, third material supporting cylinder 3c-3, guiding hook 3c-4, positioning retaining ring 3c-5, fourth material supporting component 3d, fourth material supporting rod 3d-1, fourth rolling sleeve 3d-11, fourth connecting rod 3d-2, fourth material supporting cylinder 3d-3,

[0083] Adjustable material supporting mechanism 4, adjustable material supporting mechanism mounting seat 4-1, T-shaped groove 4-1a, adjustable material supporting mechanism adjusting seat 4-2, adjustable material supporting mechanism guiding component 4-3, first adjusting connecting rod 4-4, fifth material supporting rod 4-5, fifth rolling sleeve 4-51, sixth material supporting rod, sixth rolling sleeve 4-61, first fabric limiting component 4-7, first limiting tab 4-71, first limiting tab mounting seat 4-72, first limiting tab adjusting seat 4-73, second plum blossom handle screw 4-74, second fabric limiting component 4-8, second limiting tab 4-81, second limiting tab mounting seat 4-82, third plum blossom handle screw 4-83, first plum blossom handle screw 4-9,

[0084] Feeding mechanism 5, active feeding component 5a, feeding motor 5a-1, feeding roller 5a-2, first feeding driven shaft 5a-3, connecting sleeve 5a-31, feeding driven shaft mounting sleeve 5a-4, second feeding driven shaft 5a-5, first feeding synchronous pulley 5a-6, second feeding synchronous pulley 5a-7, first feeding synchronous belt 5a-8, third feeding synchronous pulley 5a-9, fourth feeding synchronous pulley 5a-10, second feeding synchronous belt 5a-11,

[0085] The pressing and conveying assembly 5b, the conveying motor 5b-1, the reducer 5b-2, the pressing and conveying mounting seat 5b-3, the pressing and conveying synchronous belt 5b-4, the first pressing and conveying synchronous pulley 5b-5, the pressing and conveying synchronous pulley swing arm 5b-6, the first driven wheel mounting shaft 5b-7, the second driven wheel mounting shaft 5b-8, the second pressing and conveying synchronous pulley 5b-9, the third pressing and conveying synchronous pulley 5b-10, the synchronous pulley swing arm driving cylinder 5b-11, the synchronous belt tensioning mechanism 5b-12, the tensioning wheel mounting shaft 5b-12-1, the tensioning wheel 5b-12-2, the lower pressing arm 5b-12-3, the compression spring mounting rod 5b-12-4, the tensioning compression spring 5b-12-5,

[0086] Front pressing mechanism 5c, front presser foot 5c-1, front presser foot mounting seat 5c-2, front presser foot swing arm 5c-3, front presser foot driving cylinder 5c-4,

[0087] The hooking mechanism 6, the hooking mechanism mounting seat 6-1, the hooking hook 6-2, the connecting rod part 6-21, the hook part 6-22, the first hooking mounting seat 6-3, the first hooking guide assembly 6-4, the first hooking drive cylinder 6-5, the second hooking mounting seat 6-6, the second hooking guide assembly 6-7, the second hooking drive cylinder 6-8, the limit screw 6-9,

[0088] Detection mechanism 7, detection wheel 7-1, detection wheel mounting arm 7-2, detection shaft 7-3, shaft mounting seat 7-4, shaft driving arm 7-5, shaft driving cylinder 7-6, driving cylinder mounting seat 7-7, shaft reset spring 7-8, bone position detection photoeye 7-9,

[0089] Material stripping mechanism 8, material stripping roller 8-1, O-type rubber sealing ring 8-1a, material stripping roller mounting plate 8-2, material stripping motor 8-3, material stripping lifting cylinder 8-4, material stripping detection photocell 8-5, photocell adjustment assembly 8-6, fixed mounting rod 8-6-1, photocell fixing seat 8-6-2, photocell adjustment seat 8-6-3, photocell adjustment screw 8-6-4, adjustment handle 8-6-41, photocell adjustment guide rod 8-6-5, detection light 100, material supporting assembly 9, material supporting rod 9-1, sponge sleeve 9-2. DETAILED DESCRIPTION

[0090] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings. Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1 The direction is forward, away from Figure 1 The side that is at the rear is the one at the rear.

[0091] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0092] It should be understood that terms such as "upper", "lower", "inside" and "outside" to indicate directions or positional relationships are based on the positional relationships described in the drawings and are only used to facilitate the description of the present invention or simplify the description, rather than to indicate a specific direction that must be possessed.

[0093] (Example 1)

[0094] See Figures 1 to 33 The fully automatic rolling machine of the present invention comprises a workbench component 1, a sewing component 2, a material supporting mechanism 3, an adjustable material supporting mechanism 4, a feeding mechanism 5, a material hooking mechanism 6, a detection mechanism 7, a material scraping mechanism 8 and a material supporting component 9.

[0095] See Figures 1 to 10 The workbench assembly 1 includes a frame 1-1, a workbench 1-2 and a workbench lifting mechanism 1-3. The workbench 1-2 is fixedly arranged on the frame 1-1 by the workbench lifting mechanism 1-3, and the height of the workbench 1-2 can be adjusted by the workbench lifting mechanism 1-3. A head support column 1-21 is arranged on the right side of the workbench 1-2. The workbench lifting mechanism 1-3 includes a lifting connection frame 1-31, a worm gear box 1-32, a worm shaft 1-33, a crank 1-34, a gear 1-35 and a rack 1-36. The left and right parts of the lifting connection frame 1-31 are respectively slidably arranged on the left and right parts of the frame 1-1, and are both slidably arranged in the up-down direction. A rack 1-36 is respectively arranged on the left and right parts of the lifting connection frame 1-31, and the rack 1-36 is arranged in the up-down direction. The worm gear box 1-32 is fixedly arranged on the frame 1-1. The worm shaft 1-33 is arranged on the frame 1-1 for rotation in the left-right direction, and the worm shaft 1-33 is driven to rotate by the turbine of the worm gear box 1-32. The crank 1-34 is arranged on the worm of the worm gear box 1-32. Thus, the worm shaft 1-33 is rotated by turning the crank 1-34. A gear 1-35 is arranged on each of the left and right ends of the worm shaft 1-33. The gears 1-35 on the left and right ends of the worm shaft 1-33 are respectively meshed with the corresponding racks 1-36 on the left and right parts of the lifting connecting frame 1-31. The workbench 1-2 is fixedly arranged on the lifting connecting frame 1-31. The supporting assembly 9 includes a supporting rod 9-1. The supporting rod 9-1 is L-shaped as a whole, and the supporting rod 9-1 is horizontally fixedly arranged on the lower right part of the workbench 1-2 in the front-back direction by its right section, and the front section of the supporting rod 9-1 is horizontally arranged in the left-right direction. The front section of the supporting rod 9-1 is covered with a sponge sleeve 9-2.

[0096] See Figures 1 to 8 、 Figures 11 to 13 、 Figure 23 and Figures 30 to 33 , the sewing assembly 2 includes a sewing head 21, a rear presser mechanism 22 and a fabric positioning mechanism 23. The sewing head 21 is arranged along the front-rear direction on the right part of the workbench plate 1-2. The left side of the sewing head 21 is hinged to the workbench plate 1-2. When performing maintenance, the sewing head 21 is flipped open to the left to expose the corresponding lower part. After the sewing head 21 is flipped, it is supported by the head support column 1-21.

[0097] The rear presser mechanism 22 includes a rear presser foot 22-1, a rear presser mechanism mounting seat 22-2, a rear presser mechanism guiding assembly 22-3, a rear presser foot driving cylinder 22-4 and a rear presser foot mounting seat 22-5. The rear presser foot 22-1 is provided with a sewing notch 22-11 that penetrates up and down and opens forward. The rear presser mechanism mounting seat 22-2 is fixedly arranged on the sewing head 21, behind the sewing needle 21-1. The rear presser mechanism guiding assembly 22-3 includes a linear guide rail. The slider of the linear guide rail is fixedly arranged on the rear side of the rear presser mechanism mounting seat 22-2. The guide rail of the linear guide rail is arranged along the up-down direction. The rear presser foot mounting seat 22-5 is fixedly arranged on the guide rail of the linear guide rail. The rear presser foot driving cylinder 22-4 has its cylinder body fixedly arranged on the rear presser mechanism mounting seat 22-2. Its piston rod extends downward, and the end of the piston rod is fixedly connected to the rear presser foot mounting seat 22-5. The rear presser foot 22-1 is fixedly arranged on the rear presser foot mounting seat 22-5, so that the rear presser foot 22-1 is driven by the rear presser foot driving cylinder 22-4 to lift upward or press downward.

[0098] The fabric positioning mechanism 23 includes an upper positioning plate 23-1 and a lower positioning plate 23-2. The upper positioning plate 23-1 is vertically arranged on the sewing head 21 along the left-right direction through a corresponding connecting seat, behind the rear presser foot 22-1, and is used for positioning the fabric in the front-rear direction. The position of the upper positioning plate 23-1 in the front-rear direction can be adjusted. The distance between the front side of the upper positioning plate 23-1 and the sewing needle 21-1 is 7 to 46 millimeters. A hook rod groove 23-11 that penetrates front-rear and opens downward is provided on the right part of the upper positioning plate 23-1. The lower positioning plate 23-2 is C-shaped. The C-shaped opening of the lower positioning plate 23-2 is fixedly arranged on the lower front part of the sewing head 21, and its front side is in the same vertical plane as the front side of the upper positioning plate 23-1. See Figures 1 to 8 、 Figures 17 to 20 、 Figure 27 and Figures 30 to 33, the material supporting mechanism 3 includes a material supporting mechanism mounting base 3-1, a first material supporting component 3a, a second material supporting component 3b, a third material supporting component 3c, a fourth material supporting component 3d, and a decorative protective cover 3-2. The decorative protective cover 3-2 is fixedly arranged on the material supporting mechanism mounting base 3-1 to cover the corresponding parts of the first material supporting component 3a, the second material supporting component 3b, the third material supporting component 3c, and the fourth material supporting component 3d, playing a role of aesthetic decoration and protection.

[0099] The first material supporting component 3a includes a first material supporting rod, a first connecting rod 3a-2, and a first material supporting cylinder 3a-3. The first material supporting rod is horizontally and fixedly arranged at the upper right part of the front side of the first connecting rod 3a-2 in the front-rear direction. A first rolling sleeve 3a-11 is rotatably arranged on the first material supporting rod. The lower left part of the first connecting rod 3a-2 is rotatably arranged on the lower part of the front side of the material supporting mechanism mounting base 3-1. The first material supporting cylinder 3a-3 is hinged to the upper left part of the front side of the material supporting mechanism mounting base 3-1 by its cylinder body, and the piston rod of the first material supporting cylinder 3a-3 is hinged to the first connecting rod 3a-2, so that the first material supporting cylinder 3a-3 drives the first material supporting rod to swing through the first connecting rod 3a-2.

[0100] The second material supporting component 3b includes a second material supporting rod 3b-1, a second connecting rod 3b-2, and a second material supporting cylinder 3b-3. The second material supporting rod 3b-1 is horizontally and fixedly arranged at the upper front side of the second connecting rod 3b-2 in the front-rear direction. A second rolling sleeve 3b-11 is rotatably arranged on the second material supporting rod 3b-1. The middle part of the second connecting rod 3b-2 is rotatably arranged on the right part of the material supporting mechanism mounting base 3-1. The second material supporting cylinder 3b-3 is hinged to the upper left part of the rear side of the material supporting mechanism mounting base 3-1 by its cylinder body, and the piston rod of the second material supporting cylinder 3b-3 is hinged to the lower end of the second connecting rod 3b-2, so that the second material supporting cylinder 3b-3 drives the second material supporting rod 3b-1 to swing through the second connecting rod 3b-2.

[0101] The third material supporting component 3c includes a third material supporting rod, a third material supporting roller guiding component 3c-2, a third material supporting cylinder 3c-3, a guiding hook 3c-4 and a positioning retaining ring 3c-5. The third material supporting roller guiding component 3c-2 includes a third linear guide rail 3c-21 and a third material supporting roller mounting seat 3c-22. The third linear guide rail 3c-21 is fixedly arranged on the upper front side of the material supporting mechanism mounting seat 3-1 along the vertical direction by its guide rail. The third material supporting roller mounting seat 3c-22 is fixedly arranged on the slider of the third linear guide rail 3c-21. The third material supporting rod is horizontally and fixedly arranged on the third material supporting roller mounting seat 3c-22 along the front-rear direction, and a third rolling sleeve 3c-11 is rotatably arranged on the third material supporting rod. The cylinder body of the third material supporting cylinder 3c-3 is hinged to the lower front side of the material supporting mechanism mounting seat 3-1, its piston rod extends upward, and the upper end of the piston rod is hinged to the third material supporting roller mounting seat 3c-22, so that the third material supporting cylinder 3c-3 drives the third material supporting roller 3c-1 to move up and down along the third linear guide rail 3c-21 of the third material supporting roller guiding component 3c-2. The guiding hook 3c-4 is U-shaped with an opening facing backward, the guiding hook 3c-4 is vertically arranged along the vertical direction, and the lower end of the guiding hook 3c-4 is fixedly arranged on the front end of the third material supporting rod. The positioning retaining ring 3c-5 is coaxially fixedly arranged on the rear part of the third rolling sleeve 3c-11, and the front side of the positioning retaining ring 3c-5 and the front side of the upper positioning plate 23-1 are in the same vertical plane.

[0102] The fourth material supporting component 3d includes a fourth material supporting rod 3d-1, a fourth connecting rod 3d-2 and a fourth material supporting cylinder 3d-3. The fourth material supporting rod 3d-1 is horizontally and fixedly arranged on the upper front side of the fourth connecting rod 3d-2 along the front-rear direction, a fourth rolling sleeve 3d-11 is rotatably arranged on the fourth material supporting rod 3d-1, and knurling is provided on the outer periphery of the front part of the fourth rolling sleeve 3d-11. The lower end of the fourth connecting rod 3d-2 is rotatably arranged on the upper front side of the material supporting mechanism mounting seat 3-1. The cylinder body of the fourth material supporting cylinder 3d-3 is hinged to the upper right part of the material supporting mechanism mounting seat 3-1, its piston rod extends leftward, and the end of the piston rod is hinged to the middle part of the fourth connecting rod 3d-2, so that the fourth material supporting cylinder 3d-3 drives the fourth material supporting rod 3d-1 to swing through the fourth connecting rod 3d-2.

[0103] See Figures 1 to 8 、 Figure 21 and Figure 22 As shown in

[0104] The upper side of the adjustable material supporting mechanism mounting seat 4-1 is set with the left side lower and the right side higher. A T-shaped groove 4-1a that penetrates through its left and right sides and opens upward is provided on the upper side. A first rectangular nut is provided in the wider groove section at the lower part of the T-shaped groove 4-1a. The adjustable material supporting mechanism guiding component 4-3 includes a linear guide rail, which is fixedly arranged on the front side of the adjustable material supporting mechanism mounting seat 4-1 by its guide rail, is set with the left side lower and the right side higher, and is arranged parallel to the T-shaped groove 4-1a. The adjustable material supporting mechanism adjusting seat 4-2 is fixedly arranged on the slider of the linear guide rail of the adjustable material supporting mechanism guiding component 4-3. The screw rod of the first plum blossom handle screw 4-9 passes downward through the corresponding part of the adjustable material supporting mechanism adjusting seat 4-2 and is screwed onto the first rectangular nut in the T-shaped groove 4-1a. When in use, loosen the first plum blossom handle screw 4-9, and the adjustable material supporting mechanism adjusting seat 4-2 can move left and right along the linear guide rail of the adjustable material supporting mechanism guiding component 4-3. After moving to the required position, tighten the first plum blossom handle screw 4-9 to fix the adjustable material supporting mechanism adjusting seat 4-2 on the adjustable material supporting mechanism mounting seat 4-1 so that it cannot move left and right to adapt to trouser legs of different sizes.

[0105] The first adjusting connecting rod 4-4 is formed by fixedly connecting two sections. The left part of the first adjusting connecting rod 4-4 is fixedly arranged on the right part of the front side of the adjustable material supporting mechanism adjusting seat 4-2, and the height position of its right end can be adjusted. The fifth material supporting rod 4-5 is horizontally fixedly arranged along the front-rear direction on the right end of the first adjusting connecting rod 4-4. A fifth roller 4-51 is rotatably arranged on the fifth material supporting rod 4-5, and a rubber sleeve or a nylon sleeve is sleeved on the fifth roller 4-51. In this embodiment, it is a nylon sleeve.

[0106] The sixth material supporting rod is horizontally fixedly arranged along the front-rear direction on the left part of the front side of the adjustable material supporting mechanism adjusting seat 4-2. A sixth roller 4-61 is rotatably arranged on the sixth material supporting rod, and a rubber sleeve or a nylon sleeve is sleeved on the sixth roller 4-61. In this embodiment, it is a nylon sleeve.

[0107] The first fabric limiting component 4-7 includes a first limiting flap 4-71, a first limiting flap mounting seat 4-72, a first limiting flap adjusting seat 4-73, and a second plum blossom handle screw 4-74. The first limiting flap 4-71 is fixedly arranged on the first limiting flap adjusting seat 4-73, and is arranged in a C shape around the nylon sleeve on the fifth roller 4-51 along the circumferential direction of the fifth roller 4-51 with a corresponding fitting gap left. The fitting gap is 0.1 to 0.5 mm, and in this embodiment it is 0.25 mm, which is used to limit the fabric. When the fabric passes through this nylon sleeve, the rear part abuts against the front side of the first limiting flap 4-71, and the front side of the first limiting flap 4-71 and the front side of the upper positioning plate 23-1 are in the same vertical plane. The first limiting flap mounting seat 4-72 is fixedly arranged on the middle part of the first adjusting link 4-4. The first limiting flap adjusting seat 4-73 is slidably arranged on the first limiting flap mounting seat 4-72 in the front-rear direction. The first limiting flap adjusting seat 4-73 is provided with a waist-shaped hole penetrating up and down in the front-rear direction. The screw rod of the second plum blossom handle screw 4-74 passes downward through this waist-shaped hole and is screwed into the corresponding screw hole on the first limiting flap mounting seat 4-72. Thus, the handle of the second plum blossom handle screw 4-74 presses and fixes the first limiting flap adjusting seat 4-73 on the first limiting flap mounting seat 4-72.

[0108] The second fabric limiting component 4-8 includes a second limiting flap 4-81, a second limiting flap mounting seat 4-82, and a third plum blossom handle screw 4-83. The second limiting flap 4-81 is fixedly arranged on the second limiting flap mounting seat 4-82, and is arranged around the nylon sleeve on the sixth roller 4-61 along the circumferential direction of the sixth roller 4-61 with a corresponding fitting gap left. The fitting gap is 0.1 to 0.5 mm, and in this embodiment it is 0.25 mm, which is used to limit the fabric. When the fabric passes through this nylon sleeve, the rear part abuts against the front side of the second limiting flap 4-81. The second limiting flap mounting seat 4-82 is slidably arranged on the left part of the adjustable material supporting mechanism adjusting seat 4-2 in the front-rear direction. The second limiting flap mounting seat 4-82 is provided with a waist-shaped hole penetrating up and down in the front-rear direction. The screw rod of the third plum blossom handle screw 4-83 passes downward through this waist-shaped hole and is screwed into the corresponding screw hole on the adjustable material supporting mechanism adjusting seat 4-2. Thus, the handle of the third plum blossom handle screw 4-83 presses and fixes the second limiting flap mounting seat 4-82 on the adjustable material supporting mechanism adjusting seat 4-2, and the front side of the second limiting flap 4-81 and the front side of the first limiting flap 4-71 are in the same vertical plane.

[0109] See Figures 1 to 8 、 Figure 11 and Figures 14 to 16 , the feeding mechanism 5 includes a main feeding component 5a, a pressing and conveying component 5b, and a front pressing mechanism 5c.

[0110] See Figures 1 to 8 、Figure 11 and Figure 14 The active feeding component 5a includes a feeding motor 5a-1, a feeding roller 5a-2, a first feeding driven shaft 5a-3, a feeding driven shaft mounting sleeve 5a-4, a second feeding driven shaft 5a-5, a first feeding synchronous belt pulley 5a-6, a second feeding synchronous belt pulley 5a-7, a first feeding synchronous belt 5a-8, a third feeding synchronous belt pulley 5a-9, a fourth feeding synchronous belt pulley 5a-10, and a second feeding synchronous belt 5a-11.

[0111] The feeding motor 5a-1 is fixedly arranged on the right rear part of the sewing head 21 of the sewing component 2, its motor shaft faces forward, and the first feeding synchronous belt pulley 5a-6 is drivingly arranged on the motor shaft of the feeding motor 5a-1. The second feeding driven shaft 5a-5 is rotationally arranged on the middle part of the sewing head 21 along the front-rear direction by its axis, the second feeding synchronous belt pulley 5a-7 is drivingly arranged on the rear end of the second feeding driven shaft 5a-5, and the third feeding synchronous belt pulley 5a-9 is drivingly arranged on the front end of the second feeding driven shaft 5a-5. The first feeding synchronous belt 5a-8 is arranged around the first feeding synchronous belt pulley 5a-6 and the second feeding synchronous belt pulley 5a-7. The feeding driven shaft mounting sleeve 5a-4 is fixedly arranged on the middle part of the sewing head 21 along the front-rear direction by its axis, the first feeding driven shaft 5a-3 is rotationally arranged in the feeding driven shaft mounting sleeve 5a-4, and a connecting sleeve 5a-31 is provided at the front end of the first feeding driven shaft 5a-3. The fourth feeding synchronous belt pulley 5a-10 is drivingly arranged on the rear end of the first feeding driven shaft 5a-3, and the second feeding synchronous belt 5a-11 is arranged around the third feeding synchronous belt pulley 5a-9 and the fourth feeding synchronous belt pulley 5a-10. The feeding roller 5a-2 is drivingly arranged on the front part of the first feeding driven shaft 5a-3, between the feeding driven shaft mounting sleeve 5a-4 and the connecting sleeve 5a-31, and on the right side of the sewing needle 21-1 of the sewing head 21 in the material discharging direction. The surface of the feeding roller 5a-2 is provided with serrations to increase the friction with the fabric, prevent idling, and ensure the reliability of feeding.

[0112] See Figures 1 to 8 、 Figure 15 and Figure 16 The pressing and conveying component 5b includes a conveying motor 5b-1, a speed reducer 5b-2, a pressing and conveying mounting seat 5b-3, a pressing and conveying synchronous belt 5b-4, a first pressing and conveying synchronous belt pulley 5b-5, a pressing and conveying synchronous belt pulley swing arm 5b-6, a first driven wheel mounting shaft 5b-7, a second driven wheel mounting shaft 5b-8, a second pressing and conveying synchronous belt pulley 5b-9, a third pressing and conveying synchronous belt pulley 5b-10, a synchronous belt pulley swing arm driving cylinder 5b-11, and a synchronous belt tensioning mechanism 5b-12.

[0113] The presser-feeding mounting seat 5b-3 is fixedly arranged on the upper front part of the right side of the sewing head 21. The speed reducer 5b-2 is fixedly arranged on the presser-feeding mounting seat 5b-3, and its output shaft is arranged in the front-rear direction and extends forward. The conveying motor 5b-1 is fixedly connected to the rear part of the speed reducer 5b-2 by its motor housing, and the motor shaft of the conveying motor 5b-1 is in transmission connection with the input end of the speed reducer 5b-2. The first presser-feeding synchronous pulley 5b-5 is arranged in transmission on the output shaft of the speed reducer 5b-2. The second driven wheel mounting shaft 5b-8 is fixedly arranged in the lower part of the presser-feeding mounting seat 5b-3 in the front-rear direction and extends forward. The presser-feeding synchronous belt pulley swing arm 5b-6 is rotatably arranged on the second driven wheel mounting shaft 5b-8 by its middle part. The first driven wheel mounting shaft 5b-7 is fixedly arranged on the right end of the presser-feeding synchronous belt pulley swing arm 5b-6 in the front-rear direction and extends forward. The second presser-feeding synchronous pulley 5b-9 is rotatably arranged on the first driven wheel mounting shaft 5b-7 and is located above the feeding roller 5a-2. The third presser-feeding synchronous pulley 5b-10 is rotatably arranged on the second driven wheel mounting shaft 5b-8 and is located in front of the presser-feeding synchronous belt pulley swing arm 5b-6. The presser-feeding synchronous belt 5b-4 is arranged around the first presser-feeding synchronous pulley 5b-5 and the second presser-feeding synchronous pulley 5b-9, and bypasses from the lower right of the third presser-feeding synchronous pulley 5b-10 and is in meshing belt transmission with the third presser-feeding synchronous pulley 5b-10. The synchronous belt pulley swing arm driving cylinder 5b-11 is hinged to the upper part of the right part of the presser-feeding mounting seat 5b-3 by the upper end of its cylinder body, its piston rod extends downward, and the lower end of the piston rod is hinged to the left end of the presser-feeding synchronous belt pulley swing arm 5b-6, so that the synchronous belt pulley swing arm driving cylinder 5b-11 drives the second presser-feeding synchronous pulley 5b-9 to lift or lower through the presser-feeding synchronous belt pulley swing arm 5b-6.

[0114] The synchronous belt tensioning mechanism 5b-12 includes a tensioning wheel mounting shaft 5b-12-1, a tensioning wheel 5b-12-2, a lower pressing arm 5b-12-3, a compression spring mounting rod 5b-12-4, and a tensioning compression spring 5b-12-5. The lower pressing arm 5b-12-3 is hinged at its rear end to the lower rear side of the material pressing and conveying mounting seat 5b-3. The tensioning wheel mounting shaft 5b-12-1 is fixedly arranged in the front end of the lower pressing arm 5b-12-3 along the front-rear direction and extends forward. The tensioning wheel 5b-12-2 is rotatably arranged on the tensioning wheel mounting shaft 5b-12-1 and is located on the right side of the material pressing and conveying synchronous belt 5b-4. A waist-shaped through hole penetrating the upper and lower parts of the lower pressing arm 5b-12-3 is provided in the middle of the lower pressing arm 5b-12-3. The lower end of the compression spring mounting rod 5b-12-4 is fixedly arranged on the lower rear side of the material pressing and conveying mounting seat 5b-3, and the corresponding part in the middle is located in the waist-shaped through hole of the lower pressing arm 5b-12-3. The tensioning compression spring 5b-12-5 is arranged on the compression spring mounting rod 5b-12-4 and is located on the upper side of the lower pressing arm 5b-12-3 and is in a compressed state, and is used to press down the front end of the lower pressing arm 5b-12-3, so that the tensioning wheel 5b-12-2 presses tightly on the material pressing and conveying synchronous belt 5b-4, and the material pressing and conveying synchronous belt 5b-4 is kept in a tensioned state.

[0115] The front material pressing mechanism 5c includes a front pressing foot 5c-1, a front pressing foot mounting seat 5c-2, a front pressing foot swing arm 5c-3, and a front pressing foot driving cylinder 5c-4. The front pressing foot swing arm 5c-3 is rotatably arranged at its middle part on the second driven wheel mounting shaft 5b-8 and is located in front of the third material pressing and conveying synchronous belt wheel 5b-10. A waist-shaped through hole penetrating the front and rear parts of the front pressing foot swing arm 5c-3 is provided at the left end of the front pressing foot swing arm 5c-3. The front pressing foot mounting seat 5c-2 is fixedly arranged at the right end of the front pressing foot swing arm 5c-3. The front pressing foot 5c-1 is fixedly arranged on the front pressing foot mounting seat 5c-2 and is located in front of the rear pressing foot 22-1 of the rear material pressing mechanism 22. The front pressing foot driving cylinder 5c-4 is hinged at its cylinder body upper part to the upper right part of the material pressing and conveying mounting seat 5b-3, and its piston rod extends downward. A bolt is arranged along the front-rear direction at the lower end of the piston rod. The rear part of the bolt passes through the waist-shaped through hole at the left end of the front pressing foot swing arm 5c-3 from front to rear and is fixedly screwed and fixed at the lower end of the piston rod, so as to fixedly connect the piston rod of the front pressing foot driving cylinder 5c-4 with the left end of the front pressing foot swing arm 5c-3. Thus, the front pressing foot driving cylinder 5c-4 drives the front pressing foot 5c-1 to lift or press down through the front pressing foot swing arm 5c-3.

[0116] See Figures 1 to 8 and Figures 23 to 26 , the material hooking mechanism 6 includes a material hooking mechanism mounting seat 6-1, a material hooking hook 6-2, a first material hooking mounting seat 6-3, a first material hooking guiding component 6-4, a first material hooking driving cylinder 6-5, a second material hooking mounting seat 6-6, a second material hooking guiding component 6-7, a second material hooking driving cylinder 6-8, and a limit screw 6-9.

[0117] The material hooking mechanism mounting base 6-1 is fixedly arranged at the middle right side of the sewing head 21 of the sewing assembly 2. The second material hooking guiding assembly 6-7 adopts a linear guide rail, and the guide rail of the linear guide rail is horizontally fixedly arranged on the right side of the material hooking mechanism mounting base 6-1 in the front-back direction. The second material hooking mounting base 6-6 is fixedly arranged on the slider of the linear guide rail. The second material hooking driving cylinder 6-8 has its cylinder body fixedly arranged on the rear part of the right side of the material hooking mechanism mounting base 6-1 in the front-back direction, and its piston rod extends forward. The end of the piston rod is fixedly connected to the second material hooking mounting base 6-6, and the second material hooking mounting base 6-6 is driven by the second material hooking driving cylinder 6-8 to move back and forth along the second material hooking guiding assembly 6-7. The first material hooking guiding assembly 6-4 adopts a linear guide rail, and the slider of the linear guide rail is fixedly connected to the right side of the second material hooking mounting base 6-6. The guide rail of the linear guide rail is fixedly connected to the first material hooking mounting base 6-3 in the up-down direction. The first material hooking driving cylinder 6-5 has its cylinder body fixedly arranged on the second material hooking mounting base 6-6 in the up-down direction, and its piston rod extends upward. The end of the piston rod is fixedly connected to the first material hooking mounting base 6-3, so that the first material hooking mounting base 6-3 is driven by the first material hooking driving cylinder 6-5 to move up and down along the first material hooking guiding assembly 6-4. The material hooking hook 6-2 is an integral part, and the material hooking hook 6-2 includes a connecting rod portion 6-21 and a hooked portion 6-22. The material hooking hook 6-2 has its connecting rod portion 6-21 horizontally fixedly arranged on the first material hooking mounting base 6-3 in the front-back direction and extends forward from the material hooking rod slot 23-11 of the upper positioning plate 23-1. The hooked portion 6-22 is located on the front side of the upper positioning plate 23-1. The hooked portion 6-22 is in a C shape with an opening facing backward, and the opening of the hooked portion 6-22 is located to the left of the connecting rod portion 6-21. The hooked portion 6-22 is inclined with the left side lower and the right side higher, which is convenient for the hooked portion 6-22 to extend backward into the folded part between the trouser leg tube and the original trouser leg tube. The limit screw 6-9 is screwed on the second material hooking mounting base 6-6 and is located above the guide rail of the first material hooking guiding assembly 6-4.

[0118] See Figures 1 to 9 and Figures 24 to 27 As shown in FIGS. and, the detection mechanism 7 includes a detection wheel 7-1, a detection wheel mounting arm 7-2, a detection rotating shaft 7-3, a rotating shaft mounting seat 7-4, a rotating shaft driving arm 7-5, a rotating shaft driving cylinder 7-6, a driving cylinder mounting seat 7-7, a rotating shaft return spring 7-8 and a bone position detection optical eye 7-9.

[0119] The detection wheel 7-1 adopts a deep groove ball bearing, and the inner ring of the deep groove ball bearing is fixedly set on the left end of the detection wheel mounting arm 7-2, and the outer ring rotation axis of the deep groove ball bearing is horizontally set in the front-to-back direction. The shaft mounting seat 7-4 is fixedly set on the hooking mechanism mounting seat 6-1, and the detection shaft 7-3 is rotatably set in the shaft mounting seat 7-4 in the front-to-back direction. The right end of the detection wheel mounting arm 7-2 is fixedly set on the front end of the detection shaft 7-3. The left end of the shaft driving arm 7-5 is fixedly set on the rear end of the detection shaft 7-3. The driving cylinder mounting seat 7-7 is fixedly set on the rear part of the shaft mounting seat 7-4 and protrudes to the right. The shaft driving cylinder 7-6 is fixedly set on the driving cylinder mounting seat 7-7 by its cylinder body in the up-down direction, and its piston rod extends downward, and the end of the piston rod is fixedly connected to the right part of the shaft driving arm 7-5. The shaft return spring 7-8 is arranged between the right part of the shaft drive arm 7-5 and the right part of the drive cylinder mounting seat 7-7, and is in a stretched state. The bone position detection photoeye 7-9 is fixedly arranged on the right lower part of the drive cylinder mounting seat 7-7 along the front-back direction, facing forward, and is used to detect whether the right end of the shaft drive arm 7-5 is at a corresponding position height in front of the bone position detection photoeye 7-9.

[0120] See Figures 1 to 9 , Figure 28 and Figure 29 The material removal mechanism 8 includes a material removal roller 8-1, a material removal roller mounting plate 8-2, a material removal motor 8-3, a material removal lifting cylinder 8-4 and a positioning detection device. The positioning detection device includes a material removal detection photocell 8-5 and a photocell adjustment component 8-6.

[0121] The material lifting cylinder 8-4 is fixedly arranged on the front side of the third material supporting roller mounting seat 3c-22 of the third material supporting assembly 3c by its cylinder body in the up-down direction, and its piston rod extends downward. The material lifting cylinder 8-4 adopts a cylinder with a guide rod. The material lifting motor 8-3 is fixedly connected to the piston rod of the material lifting cylinder 8-4 by its motor housing through the corresponding mounting seat, and the motor shaft of the material lifting motor 8-3 extends horizontally to the right. The material lifting roller mounting plate 8-2 is transmission-arranged on the motor shaft of the material lifting motor 8-3, and is located below the third roller sleeve 3c-11 of the third material supporting assembly 3c.

[0122] There are several stripping rollers 8-1, and in this embodiment, there are 12. The stripping rollers 8-1 are rotatably arranged on the stripping roller mounting plate 8-2 at equal intervals along the circumference of the stripping roller mounting plate 8-2. The axis of the stripping roller mounting plate 8-2 is perpendicular to the plane where the axis of each stripping roller 8-1 is located. The stripping roller 8-1 is covered with an O-type rubber sealing ring 8-1a.

[0123] The photoeye adjustment assembly 8-6 includes a fixed mounting rod 8-6-1, a photoeye fixing seat 8-6-2, a photoeye adjustment seat 8-6-3, a photoeye adjustment screw 8-6-4 and a photoeye adjustment guide rod 8-6-5. The fixed mounting rod 8-6-1 is fixedly mounted horizontally along the front-to-back direction on the lower right part of the supporting mechanism mounting seat 3-1 of the supporting mechanism 3, and extends forward. The photoeye fixing seat 8-6-2 is fixedly mounted on the front end of the fixed mounting rod 8-6-1. The photoeye adjustment guide rod 8-6-5 is fixedly mounted on the photoeye fixing seat 8-6-2, parallel to the fixed mounting rod 8-6-1, and extends backward. The photoeye adjustment seat 8-6-3 is slidably mounted on the fixed mounting rod 8-6-1 and the photoeye adjustment guide rod 8-6-5. The photoeye adjustment seat 8-6-3 is provided with screw holes running through the front and back thereof. The front part of the photoeye adjustment screw 8-6-4 is provided with a positioning retaining ring, and the front end of the photoeye adjustment screw 8-6-4 is provided with an adjustment handle 8-6-41. The part between the positioning retaining ring of the photoeye adjustment screw 8-6-4 and the adjustment handle 8-6-41 is rotatably arranged in the photoeye fixing seat 8-6-2 through a resin bearing, and the rear screw is screwed into the screw hole of the photoeye adjustment seat 8-6-3. The photoeye adjustment screw 8-6-4 is driven to rotate by rotating the adjustment handle 8-6-41, so as to adjust the position of the photoeye adjustment seat 8-6-3 in the front and rear directions. The material removal detection photoeye 8-5 is fixedly arranged on the photoeye adjustment seat 8-6-3, and the detection light 100 of the material removal detection photoeye 8-5 (for ease of understanding, a virtual detection light 100 is drawn in the attached drawings of the specification) points to the lower part of the sewing machine head 21 of the sewing assembly 2, and is located 0.2 to 1 mm in front of the lower positioning plate 23-2.

[0124] The fully automatic trouser leg rolling machine of the present invention comprises the following steps when processing trouser legs:

[0125] 1. When the fully automatic foot roller machine is in the initial reset state: the piston rod of the rear presser foot driving cylinder 22-4 of the rear presser mechanism 22 is in the upward retracted state, causing the rear presser foot 22-1 to lift upward; the piston rod of the front presser foot driving cylinder 5c-4 of the front presser mechanism 5c of the feeding mechanism 5 is in the downward extended state, causing the front presser foot 5c-1 to lift upward. The piston rod of the synchronous pulley swing arm driving cylinder 5b-11 of the presser feeding assembly 5b is in the downward extended state, causing the second presser feeding synchronous pulley 5b-9 to lift upward; the piston rod of the second driving cylinder 6-8 of the material hooking mechanism 6 is in the forward extended state, causing the material hooking hook 6-2 to move forward; the piston rod of the first driving cylinder 6-5 of the material hooking mechanism 6 is in the upward extended state, causing the material hooking hook 6-2 to move upward; the piston rod of the rotating shaft driving cylinder 7-6 of the detection mechanism 7 is in the downward extended state, causing the detection wheel 7-1 to lift upward; the piston rod of the first supporting cylinder 3a-3 of the first supporting assembly 3a of the material supporting mechanism 3 is in the retracted state, causing the first supporting rod to move closer to the front part of the sewing head 21; the piston rod of the second supporting cylinder 3b-3 of the second supporting assembly 3b is in the extended state, causing the second supporting rod 3b-1 to move closer to the front part of the sewing head 21; the piston rod of the third supporting cylinder 3c-3 of the third supporting assembly 3c is in the extended state, causing the third supporting rod to move upward and closer to the front part of the sewing head 21; the piston rod of the fourth supporting cylinder 3d-3 of the fourth supporting assembly 3d is in the extended state, causing the fourth supporting rod 3d-1 to move closer to the front part of the sewing head 21; the piston rod of the material scraping lifting cylinder 8-4 of the material scraping mechanism 8 is in the downward extended state.

[0126] 2. Placing the fabric: First, turn the entire trouser leg tube of the pants inside out (turn the original inside to the outside and the original outside to the inside), and then turn the frayed part at the end of the trouser leg tube outward by 180 degrees (that is, fold it toward the side where the original inside of the trouser leg tube was, so that the original inside of the folded part is opposite to the original inside side of the trouser leg tube). The crease after folding is the end of the sewn pants. Put the end part of the folded trouser leg tube on the lower front part of the sewing head 21, and also put the fifth supporting rod 4-5 of the adjustable material supporting mechanism 4, the first supporting rod of the first supporting assembly 3a, the second supporting rod 3b-1 of the second supporting assembly 3b, the third supporting rod of the third supporting assembly 3c, the fourth supporting rod 3d-1 of the fourth supporting assembly 3d and the feeding roller 5a-2 of the feeding mechanism 5 all inside. The end of the trouser leg tube fits against the front side of the upper positioning plate 23-1 and the front side of the first limiting flap 4-71 of the first fabric limiting assembly 4-7. Place the corresponding front part of the fabric on the front section of the material supporting rod 9-1.

[0127] When the size of the sewn trouser leg tube is larger, also put the sixth supporting rod of the adjustable material supporting mechanism 4 inside, and the end of the trouser leg tube fits against the front side of the second limiting flap 4-81 of the second fabric limiting assembly 4-8 at the same time.

[0128] III. Expand the trouser leg tube into a cylindrical shape: The piston rod of the first material support cylinder 3a-3 of the first material support assembly 3a of the material support mechanism 3 extends, causing the first material support rod to move away from the sewing head 21; the piston rod of the second material support cylinder 3b-3 of the second material support assembly 3b retracts, causing the second material support rod 3b-1 to move away from the sewing head 21; the piston rod of the third material support cylinder 3c-3 of the third material support assembly 3c retracts downward, causing the third material support rod to move downward and away from the sewing head 21; the piston rod of the fourth material support cylinder 3d-3 of the fourth material support assembly 3d retracts, causing the fourth material support rod 3d-1 to move away from the sewing head 21; thus, the trouser leg tube is expanded into a cylindrical shape by the first material support rod, the second material support rod 3b-1, the third material support rod, and the fourth material support rod 3d-1; the trouser leg tube surrounds the first material support rod, the second material support rod 3b-1, the third material support rod, the fourth material support rod 3d-1, the fifth material support rod 4-5, the feeding roller 5a-2, and the part below the sewing needle 21-1 of the sewing head 21.

[0129] The piston rod of the first hook driving cylinder 6-5 retracts downward, causing the left part of the hooked part 6-22 of the hook 6-2 to press downward on the trouser leg tube; then the piston rod of the second hook driving cylinder 6-8 of the hook mechanism 6 retracts backward, causing the hooked part 6-22 of the hook 6-2 to extend backward into the space between the folded part of the trouser leg tube and the original trouser leg tube, and then the piston rod of the first hook driving cylinder 6-5 extends upward, causing the hook 6-2 to lift upward; the distance between the frontmost part of the hooked part 6-22 and the front side of the upper positioning plate 23-1 is less than the width of the folded part of the trouser leg tube. When the folded part rotates counterclockwise past the hooked part 6-22, the front edge of the folded part is hooked backward by the hooked part 6-22 to the space between the original trouser leg tube and the previous folded part, so that the edge part is turned backward 180 degrees for the second time from the bottom.

[0130] The piston rod of the rotating shaft driving cylinder 7-6 of the detection mechanism 7 retracts upward, causing the detection wheel 7-1 to press the trouser leg tube fabric downward onto the fourth roller 3d-11 of the fourth material support rod 3d-1 of the fourth material support assembly 3d; the trouser leg tube is usually sewn into a cylindrical shape by two pieces of fabric, so there are two joints in the circumferential direction of the trouser leg tube. The thickness at the two joints is usually the thickness of three layers of fabric, which is thicker than the thickness of the single-layer fabric of the trouser leg tube (i.e., it bulges a little). In the industry, these two joint parts are customarily called bone positions. When the bone position is between the detection wheel 7-1 and the fourth roller 3d-11, the detection wheel 7-1 will be pushed upward, so the right end of the rotating shaft driving arm 7-5 will move downward. At this time, the bone position detection light eye 7-9 cannot detect the corresponding part of the right end of the rotating shaft driving arm 7-5 in front of it, and it is judged that the bone position is between the detection wheel 7-1 and the fourth roller 3d-11 at this time;

[0131] The piston rod of the synchronous pulley swing arm driving cylinder 5b-11 of the material pressing and conveying assembly 5b of the material feeding mechanism 5 retracts upward, causing the second material pressing and conveying synchronous pulley 5b-9 to press downward, and the material pressing and conveying synchronous belt 5b-4 presses the corresponding part of the trouser leg tube tightly on the feeding roller 5a-2 of the active material feeding assembly 5a.

[0132] IV. The feeding motor 5a-1 of the active material feeding assembly 5a drives the feeding roller 5a-2 to rotate, and the conveying motor 5b-1 of the material pressing and conveying assembly 5b drives the material pressing and conveying synchronous belt 5b-4 to rotate. Thus, the trouser leg tube rotates counterclockwise under the combined action of the feeding roller 5a-2 and the material pressing and conveying synchronous belt 5b-4. When the bone position detection optical eye 7-9 first detects that there is a bone position between the detection wheel 7-1 and the fourth roller sleeve 3d-11, a delay time T is set. According to the rotation speed of the trouser leg tube and the circumferential distance of the trouser leg tube between this bone position and the sewing needle 21-1 of the sewing head 21, this delay time T is calculated. When the delay time T ends, the piston rod of the back material pressing foot driving cylinder 22-4 of the back material pressing mechanism 22 extends downward, causing the back material pressing foot 22-1 to press downward on the trouser leg tube fabric. The piston rod of the front material pressing foot driving cylinder 5c-4 of the front material pressing mechanism 5c of the material feeding mechanism 5 retracts upward, causing the front material pressing foot 5c-1 to press downward on the trouser leg tube fabric. The sewing head 21 starts sewing, stitching and fixing the folded three-layer fabric together.

[0133] VI. When the bone position detection optical eye 7-9 secondarily detects that there is a bone position between the detection wheel 7-1 and the fourth roller sleeve 3d-11, the sewing head 21 continues sewing. When the bone position detection optical eye 7-9 tertially detects that there is a bone position between the detection wheel 7-1 and the fourth roller sleeve 3d-11, the piston rod of the second hook driving cylinder 6-8 of the hook mechanism 6 extends forward, causing the hook part 6-22 of the hook 6-2 to withdraw forward from between the folded part of the trouser leg tube and the original trouser leg tube. After the sewing head 21 continues sewing for the delay time T, it stops sewing, and the sewing is completed. The fully automatic hemming machine returns to the initial reset state.

[0134] VII. During the sewing process, when the material pulling detection optical eye 8-5 does not detect the lower part of the sewing head 21, the material pulling lifting cylinder 8-4 of the material pulling mechanism 8 does not act, and the material pulling motor 8-3 does not act. When the material pulling detection optical eye 8-5 detects the lower part of the sewing head 21, the piston rod of the material pulling lifting cylinder 8-4 of the material pulling mechanism 8 retracts upward, causing the corresponding material pulling roller 8-1 to clamp the trouser leg tube fabric on the third roller sleeve 3c-11 of the third material supporting rod. At the same time, the material pulling motor 8-3 drives the material pulling roller mounting disc 8-2 to rotate, and the upper part of the material pulling roller mounting disc 8-2 rotates backward. The trouser leg tube fabric is pulled backward through the material pulling roller 8-1 on the material pulling roller mounting disc 8-2, causing the trouser leg tube fabric to block the detection light 100 of the material pulling detection optical eye 8-5, so that the material pulling detection optical eye 8-5 does not detect the lower part of the sewing head 21.

[0135] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fully automatic hemming machine, characterized in that: it includes a workbench assembly, a sewing assembly, a fabric supporting mechanism, an adjustable fabric supporting mechanism, a feeding mechanism, a fabric hooking mechanism and a detection mechanism; the workbench assembly includes a frame, a workbench board and a workbench board lifting mechanism; the workbench board is fixedly arranged on the frame through the workbench board lifting mechanism, and the height of the workbench board can be adjusted through the workbench board lifting mechanism; the sewing assembly includes a sewing head; the fabric supporting mechanism is used to support the fabric into a tubular shape; the adjustable fabric supporting mechanism is used to adjust and adapt to different tubular sizes; the adjustable fabric supporting mechanism includes an adjustable fabric supporting mechanism mounting seat, an adjustable fabric supporting mechanism adjusting seat and a fifth fabric supporting rod; the adjustable fabric supporting mechanism adjusting seat is arranged on the adjustable fabric supporting mechanism mounting seat, and the fifth fabric supporting rod is arranged on the adjustable fabric supporting mechanism adjusting seat; the feeding mechanism rotates the supported tubular fabric to perform feeding; the feeding mechanism includes a main feeding assembly; the main feeding assembly includes a feeding motor and a feeding roller; the feeding roller is driven by the feeding motor to rotate for feeding; the fabric hooking mechanism includes a fabric hooking hook, a first fabric hooking driving cylinder and a second fabric hooking driving cylinder; the first fabric hooking driving cylinder drives the fabric hooking hook to extend forward or retract backward, and the second fabric hooking driving cylinder drives the fabric hooking hook to lift upward or press downward, and the fabric hooking hook curls the edge of the supported and rotating fabric; the sewing head stitches and fixes the curled fabric, and the detection mechanism is used to judge the starting sewing position and the ending sewing position.

2. The fully automatic hemming machine according to claim 1, characterized in that: the sewing assembly includes a sewing head and a fabric positioning mechanism; the fabric positioning mechanism includes an upper positioning plate; the upper positioning plate is vertically arranged on the sewing head in the left-right direction through a corresponding connecting seat, and the distance between the upper positioning plate and the sewing needle can be adjusted.

3. The fully automatic hemming machine according to claim 1, characterized in that: the fabric supporting mechanism includes a fabric supporting mechanism mounting seat, a first fabric supporting component, a second fabric supporting component, a third fabric supporting component and a fourth fabric supporting component; the first fabric supporting component includes a first fabric supporting rod; the second fabric supporting component includes a second fabric supporting rod; the third fabric supporting component includes a third fabric supporting rod; the fourth fabric supporting component includes a fourth fabric supporting rod; the first fabric supporting rod, the second fabric supporting rod, the third fabric supporting rod and the fourth fabric supporting rod support the fabric after opening.

4. The fully automatic hemming machine according to claim 1, characterized in that: the adjustable fabric supporting mechanism further includes an adjustable fabric supporting mechanism guiding component, a first adjusting connecting rod, a first fabric limiting component and a first plum blossom handle screw; the upper side surface of the adjustable fabric supporting mechanism mounting seat is set with the left side lower and the right side higher, and a T-shaped groove penetrating through its left and right sides and opening upward is provided on the upper side surface, and a first rectangular nut is provided in the wider groove section at the lower part of the T-shaped groove; the adjustable fabric supporting mechanism guiding component includes a linear guide rail, the linear guide rail is fixedly arranged on the front side of the adjustable fabric supporting mechanism mounting seat by its guide rail, is set with the left side lower and the right side higher, and is arranged parallel to the T-shaped groove, and the adjustable fabric supporting mechanism adjusting seat is fixedly arranged on the slider of the linear guide rail of the adjustable fabric supporting mechanism guiding component; the screw rod of the first plum blossom handle screw passes downward through the corresponding part of the adjustable fabric supporting mechanism adjusting seat and is screwed on the first rectangular nut in the T-shaped groove; The first adjusting link is formed by two sections being fixedly connected, the left part of the first adjusting link is fixedly arranged on the front right part of the adjusting seat of the adjustable supporting mechanism, and the height position of the right end thereof can be adjusted; the fifth supporting rod is horizontally fixedly arranged on the right end of the first adjusting link along the front-back direction; the fifth supporting rod is rotatably provided with a fifth roller sleeve, and the fifth roller sleeve is covered with a rubber sleeve or a nylon sleeve; The first cloth limiting assembly includes a first limiting baffle, a first limiting baffle mounting seat, a first limiting baffle adjusting seat and a second plum handle screw; the first limiting baffle is fixedly arranged on the first limiting baffle adjusting seat, and is surrounded in a C shape along the circumference of the fifth roller sleeve around the nylon sleeve on the fifth roller sleeve and leaves a corresponding fitting gap; the first limiting baffle mounting seat is fixedly arranged on the middle part of the first adjusting connecting rod, and the first limiting baffle adjusting seat is slidably arranged on the first limiting baffle mounting seat along the front-to-back direction, and the first limiting baffle adjusting seat is provided with a waist-shaped hole running through it from top to bottom along the front-to-back direction, and the screw rod of the second plum handle screw passes downward through the waist-shaped hole and is screwed into the corresponding screw hole on the first limiting baffle mounting seat.

5. The fully automatic rolling foot machine according to claim 3, Features: It also includes a material scraping mechanism; the material scraping mechanism includes a material scraping roller, a material scraping roller mounting plate, a material scraping motor, a material scraping lifting cylinder and a positioning detection device; the positioning detection device is used to detect whether the rear end of the cloth is in place; The material-eating lifting cylinder is fixedly arranged on the front side of the third material-eating roller mounting seat of the third material-eating assembly by its cylinder body in the up-down direction, and its piston rod extends downward; the material-eating lifting cylinder adopts a cylinder with a guide rod; the material-eating motor is fixedly connected to the piston rod of the material-eating lifting cylinder by its motor housing through the corresponding mounting seat, and the motor shaft of the material-eating motor extends horizontally to the right; the material-eating roller mounting plate is transmission-arranged on the motor shaft of the material-eating motor, and is located below the third roller sleeve of the third material-eating assembly; there are several material-eating rollers, and each material-eating roller is rotationally arranged on the material-eating roller mounting plate at equal intervals along the circumference of the material-eating roller mounting plate; the axis of the material-eating roller mounting plate is perpendicular to the plane where the axis of each material-eating roller is located.

6. The fully automatic rolling foot machine according to claim 5, Features: The positioning detection device includes a material removal detection photoeye and a photoeye adjustment component; the material removal detection photoeye is arranged on the photoeye adjustment component, and the detection position of the material removal detection photoeye can be adjusted by the photoeye adjustment component; the material removal detection photoeye is used to detect whether the rear end of the cloth is in place.

7. The fully automatic rolling foot machine according to claim 1, Features: The feeding mechanism includes an active feeding assembly; the active feeding assembly also includes a first feeding driven shaft, a feeding driven shaft mounting sleeve, a second feeding driven shaft, a first feeding synchronous pulley, a second feeding synchronous pulley, a first feeding synchronous belt, a third feeding synchronous pulley, a fourth feeding synchronous pulley and a second feeding synchronous belt; The feeding motor is fixedly arranged at the rear right side of the sewing head of the sewing assembly, with its motor shaft facing forward, and the first feeding synchronous pulley is drivingly arranged on the motor shaft of the feeding motor; the second feeding driven shaft is rotationally arranged along the front-back direction on the middle part of the sewing head axially, the second feeding synchronous pulley is drivingly arranged at the rear end of the second feeding driven shaft, and the third feeding synchronous pulley is drivingly arranged at the front end of the second feeding driven shaft; the first feeding synchronous belt is arranged around the first feeding synchronous pulley and the second feeding synchronous pulley; the feeding driven shaft mounting sleeve is fixedly arranged along the front-back direction on the middle part of the sewing head axially, the first feeding driven shaft is rotationally arranged in the feeding driven shaft mounting sleeve, and a connecting sleeve is arranged at the front end of the first feeding driven shaft; the fourth feeding synchronous pulley is drivingly arranged at the rear end of the first feeding driven shaft, and the second feeding synchronous belt is arranged around the third feeding synchronous pulley and the fourth feeding synchronous pulley; the feeding roller is drivingly arranged on the front part of the first feeding driven shaft, between the feeding driven shaft mounting sleeve and the connecting sleeve, and on the right side of the sewing needle of the sewing head in the discharging direction; the surface of the feeding roller is arranged in a serrated shape.

8. The full-automatic hemming machine according to claim 7, characterized in that: the feeding mechanism further includes a pressing and feeding assembly; the pressing and feeding assembly includes a conveying motor, a speed reducer, a pressing and feeding mounting seat, a pressing and feeding synchronous belt, a first pressing and feeding synchronous pulley, a pressing and feeding synchronous pulley swing arm, a first driven wheel mounting shaft, a second driven wheel mounting shaft, a second pressing and feeding synchronous pulley, a third pressing and feeding synchronous pulley, a synchronous pulley swing arm driving cylinder and a synchronous belt tensioning mechanism; the pressing and feeding mounting seat is fixedly arranged at the front upper part of the right side of the sewing head; the speed reducer is fixedly arranged on the pressing and feeding mounting seat, with its output shaft arranged along the front-back direction and extending forward; the conveying motor is fixedly connected to the rear part of the speed reducer by its motor housing, and the motor shaft of the conveying motor is drivingly connected to the input end of the speed reducer; the first pressing and feeding synchronous pulley is drivingly arranged on the output shaft of the speed reducer; the second driven wheel mounting shaft is fixedly arranged along the front-back direction at the lower part of the pressing and feeding mounting seat and extends forward; the pressing and feeding synchronous pulley swing arm is rotationally arranged at the middle part on the second driven wheel mounting shaft; the first driven wheel mounting shaft is fixedly arranged along the front-back direction at the right end of the pressing and feeding synchronous pulley swing arm and extends forward; the second pressing and feeding synchronous pulley is rotationally arranged on the first driven wheel mounting shaft and is located above the feeding roller; the third pressing and feeding synchronous pulley is rotationally arranged on the second driven wheel mounting shaft and is located in front of the pressing and feeding synchronous pulley swing arm; the pressing and feeding synchronous belt is arranged around the first pressing and feeding synchronous pulley and the second pressing and feeding synchronous pulley, and bypasses from the lower right of the third pressing and feeding synchronous pulley and is in meshing belt transmission with the third pressing and feeding synchronous pulley; the synchronous pulley swing arm driving cylinder is hinged to the upper right part of the pressing and feeding mounting seat by its cylinder body upper end, its piston rod extends downward, and the lower end of the piston rod is hinged to the left end of the pressing and feeding synchronous pulley swing arm, so that the synchronous pulley swing arm driving cylinder drives the second pressing and feeding synchronous pulley to lift or lower through the pressing and feeding synchronous pulley swing arm; The synchronous belt tensioning mechanism includes a tensioning wheel mounting shaft, a tensioning wheel, a lower pressing arm, a compression spring mounting rod, and a tensioning compression spring; the lower pressing arm is hinged to the lower rear side of the material pressing and conveying mounting seat at its rear end; the tensioning wheel mounting shaft is fixedly arranged at the front end of the lower pressing arm along the front-rear direction and extends forward; the tensioning wheel is rotatably arranged on the tensioning wheel mounting shaft and is located on the right side of the material pressing and conveying synchronous belt; a waist-shaped through hole penetrating the upper and lower parts is provided in the middle of the lower pressing arm; the lower end of the compression spring mounting rod is fixedly arranged at the lower rear side of the material pressing and conveying mounting seat, and the corresponding part in the middle is located in the waist-shaped through hole of the lower pressing arm. The tensioning compression spring is arranged on the compression spring mounting rod and is located on the upper side of the lower pressing arm and is in a compressed state, so as to press down the front end of the lower pressing arm, make the tensioning wheel press tightly on the material pressing and conveying synchronous belt, and keep the material pressing and conveying synchronous belt in a tensioned state.

9. The full-automatic hemming machine according to claim 7, characterized in that: The sewing assembly includes a sewing machine head, a rear material pressing mechanism, and a fabric positioning mechanism; the fabric positioning mechanism includes an upper positioning plate; the upper positioning plate is vertically arranged on the sewing machine head along the left-right direction through corresponding connecting seats, and the distance between the upper positioning plate and the sewing needle can be adjusted; The rear material pressing mechanism includes a rear presser foot, a rear material pressing mechanism mounting seat, a rear material pressing mechanism guiding assembly, a rear presser foot driving cylinder, and a rear presser foot mounting seat; the rear presser foot is provided with a sewing notch penetrating the upper and lower parts with an opening forward; the rear material pressing mechanism mounting seat is fixedly arranged on the sewing machine head and is located behind the sewing needle; the rear material pressing mechanism guiding assembly includes a linear guide rail. The linear guide rail is fixedly arranged on the rear side of the rear material pressing mechanism mounting seat by its slider, and the guide rail of the linear guide rail is arranged along the up-down direction. The rear presser foot mounting seat is fixedly arranged on the guide rail of the linear guide rail; the rear presser foot driving cylinder is fixedly arranged on the rear material pressing mechanism mounting seat by its cylinder block, its piston rod extends downward, and the end of the piston rod is fixedly connected to the rear presser foot mounting seat; the rear presser foot is fixedly arranged on the rear presser foot mounting seat, so that the rear presser foot is driven by the rear presser foot driving cylinder to lift upward or press downward; The feeding mechanism further includes a front material pressing mechanism; the front material pressing mechanism includes a front presser foot, a front presser foot mounting seat, a front presser foot swing arm, and a front presser foot driving cylinder; the front presser foot swing arm is rotatably arranged on the second driven wheel mounting shaft at its middle part and is located in front of the third material pressing and conveying synchronous belt pulley; a waist-shaped through hole penetrating the front and rear parts is provided at the left end of the front presser foot swing arm; the front presser foot mounting seat is fixedly arranged at the right end of the front presser foot swing arm; the front presser foot is fixedly arranged on the front presser foot mounting seat and is located in front of the rear presser foot of the rear material pressing mechanism; the front presser foot driving cylinder is hinged to the upper right part of the material pressing and conveying mounting seat by its upper cylinder block, its piston rod extends downward, a bolt is arranged along the front-rear direction at the lower end of the piston rod, and the rear part of the bolt passes through the waist-shaped through hole at the left end of the front presser foot swing arm from front to back and is fixedly screwed and fixed at the lower end of the piston rod, so as to fixedly connect the piston rod of the front presser foot driving cylinder with the left end of the front presser foot swing arm. Thus, the front presser foot is driven by the front presser foot driving cylinder through the front presser foot swing arm to lift or press down.

10. The full-automatic hemming machine according to claim 1, characterized in that: The material hooking mechanism includes a material hooking mechanism mounting seat, a first material hooking mounting seat, a first material hooking guiding assembly, a second material hooking mounting seat, and a second material hooking guiding assembly; The material hooking mechanism mounting seat is fixedly arranged on the middle part of the right side of the sewing head of the sewing assembly; the second material hooking guiding assembly adopts a linear guide rail, and the linear guide rail is horizontally fixedly arranged on the right side of the material hooking mechanism mounting seat along the front-back direction by its guide rail, and the second material hooking mounting seat is fixedly arranged on the slider of the linear guide rail; the second material hooking driving cylinder is fixedly arranged on the rear part of the right side of the material hooking mechanism mounting seat along the front-back direction by its cylinder body, its piston rod extends forward, and the end of the piston rod is fixedly connected to the second material hooking mounting seat, and the second material hooking mounting seat is driven by the second material hooking driving cylinder to move back and forth along the second material hooking guiding assembly; the first material hooking guiding assembly adopts a linear guide rail, the slider of the linear guide rail is fixedly connected to the right side of the second material hooking mounting seat, and the guide rail of the linear guide rail is fixedly connected to the first material hooking mounting seat along the up-down direction; the first material hooking driving cylinder is fixedly arranged on the second material hooking mounting seat along the up-down direction by its cylinder body, its piston rod extends upward, and the end of the piston rod is fixedly connected to the first material hooking mounting seat, so that the first material hooking mounting seat is driven by the first material hooking driving cylinder to move up and down along the first material hooking guiding assembly; the material hooking hook is an integral part, and the material hooking hook includes a connecting rod part and a hook part; the material hooking hook is horizontally fixedly arranged on the first material hooking mounting seat along the front-back direction by its connecting rod part; the hook part is in a C shape with an opening facing backward, and the opening of the hook part is located on the left side of the connecting rod part; the hook part is inclined with the left side lower and the right side higher.

11. The full-automatic hemming machine according to claim 10, characterized in that: The detection mechanism includes a detection wheel, a detection wheel mounting arm, a detection rotating shaft, a rotating shaft mounting seat, a rotating shaft driving arm, a rotating shaft driving cylinder, a driving cylinder mounting seat, a rotating shaft return spring, and a bone position detection light eye; The detection wheel is rotatably arranged at the left end of the detection wheel mounting arm, and the rotation axis of the detection wheel is horizontally arranged along the front-back direction; the rotating shaft mounting seat is fixedly arranged on the material hooking mechanism mounting seat, and the detection rotating shaft is rotatably arranged in the rotating shaft mounting seat along the front-back direction; the right end of the detection wheel mounting arm is fixedly arranged on the front end of the detection rotating shaft; the left end of the rotating shaft driving arm is fixedly arranged on the rear end of the detection rotating shaft; the driving cylinder mounting seat is fixedly arranged on the rear part of the rotating shaft mounting seat, protruding rightward; the rotating shaft driving cylinder is fixedly arranged on the driving cylinder mounting seat along the up-down direction by its cylinder body, its piston rod extends downward, and the end of the piston rod is fixedly connected to the right part of the rotating shaft driving arm; the rotating shaft return spring is arranged between the right part of the rotating shaft driving arm and the right part of the driving cylinder mounting seat, and is in a stretched state; the bone position detection light eye is horizontally fixedly arranged on the lower right side of the driving cylinder mounting seat along the front-back direction, facing forward, and is used to detect whether the right end of the rotating shaft driving arm is at the corresponding position height in front of the bone position detection light eye.

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