CN210262251U - Drum rolls up lower hem machine - Google Patents

Abstract

The utility model discloses a drum lap-down machine, which comprises a worktable mechanism and a sewing machine head. The worktable mechanism comprises an installation bedplate, and the sewing machine head is fixedly arranged on the installation bedplate. The key points are as follows: the device further comprises a supporting mechanism, a crimping assembly, a raking mechanism, a discharging device and a receiving device. The material supporting mechanism is used for supporting the cloth to be sewn into a cylindrical shape and feeding the cloth around the sewing machine head. The hemming assembly is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the hemming assembly is used for turning the rear end of the cloth inwards and forwards. The material raking mechanism is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the material raking mechanism is used for adjusting the position of the rear end of the cloth. The discharging device is used for taking down the cloth from the supporting mechanism. The material receiving device is arranged in front of the workbench and used for receiving the cloth finished by the hemming sewing and taken down by the material discharging device from the material supporting mechanism.

Description

Drum rolls up lower hem machine

Technical Field

The utility model relates to a sewing processing equipment field specifically is a drum book lower hem machine that is used for the lower hem turn-up of clothing tube-shape part to make up.

Background

In the garment processing, the process of turning the raw edges of the fabric inwards and then sewing is called as edge curling, so that the edge contour of the garment is smoother and more attractive, and the fabric is not easy to scatter, thereby being a common garment processing mode. The hem portion of various clothes is generally completed by hemming sewing in which a peripheral portion of a cloth is folded back by a predetermined width to be overlapped with the lower side of the remaining portion and the vicinity of the peripheral portion is sewn. The sewing machine head part of the existing cylinder roll lower hem machine is a mature technology, and the sewing machine head is generally provided with an edge trimming component for trimming the edge burrs of the folded part of the cloth. All equipment manufacturers buy the sewing machine head, and then design corresponding curling, feeding and receiving assemblies to form the cylinder roll lower hem machine with higher automation degree.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, the higher drum of clothing tube-shape part's of degree of automation lower hem turn-up is made up rolls down the pendulum machine.

Realize the utility model discloses the basic technical scheme of purpose is: a cylinder roll downswing machine comprises a working table mechanism and a sewing machine head. The worktable mechanism comprises an installation bedplate, and the sewing machine head is fixedly arranged on the installation bedplate. The structure is characterized in that: the device further comprises a supporting mechanism, a crimping assembly, a raking mechanism, a discharging device and a receiving device. The material supporting mechanism is arranged on the front part of the mounting table plate of the working table mechanism in the left-right direction and used for supporting the cloth to be sewn into a cylindrical shape and feeding the cloth around the sewing machine head. The hemming assembly is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the hemming assembly is used for turning the rear end of the cloth inwards and forwards. The material raking mechanism is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the material raking mechanism is used for adjusting the position of the rear end of the cloth. The discharging device is fixedly arranged on the front part of the mounting bedplate of the worktable mechanism and used for taking down the cloth from the supporting mechanism. The material receiving device is arranged in front of the workbench and used for receiving the cloth finished by the hemming sewing and taken down by the material discharging device from the material supporting mechanism.

The technical scheme based on the basic technical scheme is as follows: the worktable mechanism also comprises a frame and a bedplate lifting mechanism. The installation bedplate is fixedly arranged on the rack through a bedplate lifting mechanism, and the height of the installation bedplate can be adjusted through the bedplate lifting mechanism.

The technical scheme based on the corresponding technical scheme is as follows: the crimping assembly comprises a feeding supporting plate, a width adjusting assembly and a third air pipe. The feeding supporting plate is horizontally and fixedly arranged on the mounting table plate of the working table mechanism and is positioned on the right side of the sewing machine head. The width adjustment assembly includes a positioning fence, a first auxiliary presser foot and a second auxiliary presser foot. The positioning backup plate is fixedly arranged on a sewing table surface at the lower part of the sewing machine head and is positioned behind the machine needle, and the distance from the positioning backup plate to the front and back direction of the machine needle can be adjusted. The first auxiliary presser foot and the second auxiliary presser foot are fixedly arranged on the positioning backup plate from left to right in sequence. The third trachea sets up in the rear side top of feeding layer board, is that the left part is preceding in the horizontal direction, and the right part inclines the setting backward. And a row of air outlet holes are formed in the lower side of the left part of the third air pipe along the axial direction of the third air pipe, and each air outlet hole is arranged along the radial direction of the third air pipe and blows air towards the front lower part to enable the part to be curled of the cloth to be turned over forwards.

The technical scheme based on the corresponding technical schemes is as follows: prop material mechanism and prop material subassembly and first drive assembly including fixed propping material subassembly, removal. The fixed material supporting assembly is arranged on the right part of the front part of the mounting table plate of the working table mechanism and is positioned on the right side of the sewing machine head. The fixed material roller that props subassembly includes first material roller and the first roller driving motor of propping, is propped the material roller by first roller driving motor drive first and rotates. The movable material supporting component comprises a second material supporting roller and a second roller driving motor. The second roller driving motor drives the second material supporting roller to rotate. The first driving assembly drives the movable material supporting assembly to move left and right, and the movable material supporting assembly is matched with the fixed material supporting assembly to support the cloth into a cylindrical shape for rotary feeding.

The technical scheme based on the corresponding technical schemes is as follows: the fixed material subassembly that props still includes first fixed mounting seat, first roller drive shaft, first compression roller and compression roller drive actuating cylinder. An auxiliary bedplate is fixedly arranged on the right part of the upper side of the installation bedplate of the worktable mechanism. The first fixed mounting seat is fixedly arranged on the auxiliary bedplate. The first roller driving shaft is arranged on the left side of the first fixed mounting seat in a front-back rotating mode. The first material supporting roller is coaxially and fixedly arranged on the front part of the driving shaft of the first roller. The first roller driving motor is fixedly arranged at the rear part of the first fixed mounting seat through a motor shell, and a motor shaft of the first roller driving motor is in transmission connection with the rear end of the first roller driving shaft through a coupling, so that the first roller driving motor drives the first material supporting roller to rotate. The rear part of the first material supporting roller is provided with a material guiding part which is in a round table shape with a large front part and a small back part. The compression roller driving cylinder is fixedly arranged on the first fixed mounting seat through a cylinder body, and a piston rod of the compression roller driving cylinder extends towards the lower left side. The first compression roller is rotatably arranged on the end of a piston rod of the compression roller driving cylinder through a corresponding mounting seat, and the compression roller driving cylinder drives the first compression roller to be close to or far away from the first material supporting roller.

The movable material supporting assembly further comprises a second fixed mounting seat, a second driven shaft, a movable material supporting motor synchronous belt wheel, a movable material supporting second synchronous belt wheel, a movable material supporting synchronous belt, a second pressing roller mounting plate and a second pressing roller driving cylinder. The second roller driving motor is fixedly arranged on the left part of the rear side of the second fixed mounting seat through a motor shell, a motor shaft of the second roller driving motor extends forwards, and a synchronous belt wheel of the moving material supporting motor is arranged on the motor shaft of the second roller driving motor in a transmission mode. The second driven shaft is arranged on the right part of the second fixed mounting seat in a forward and backward rotating mode. The second material supporting roller is fixedly sleeved on the front part of the second driven shaft. The second synchronous belt wheel for moving and supporting materials is arranged at the rear end of the second driven shaft in a transmission way. The material synchronous belt is propped around removing to remove to prop material motor synchronous pulley and remove to prop material second synchronous pulley setting to prop the material roller and rotate by second roller driving motor drive second. The second compression roller rotates along the front-back direction and is arranged on the front side of the right part of the second compression roller mounting plate and located above the second material supporting roller. The second press roll mounting plate is rotatably connected to the right part of the upper part of the second fixed mounting seat through the middle part of the lower part of the second press roll mounting plate. The second compression roller driving cylinder is hinged to the left portion of the upper portion of the second fixed mounting seat through a cylinder body, a piston rod of the second compression roller driving cylinder extends rightwards and is connected to the left portion of the second compression roller mounting plate through a joint bearing, and therefore the second compression roller driving cylinder drives the second compression roller to lift up or press down.

The technical scheme based on the corresponding technical schemes is as follows: the first driving assembly comprises a third fixed mounting seat, a first driving motor, a motor shaft synchronous pulley, a second synchronous pulley, a first synchronous belt and a first linear guide rail. The third fixed mounting seat is fixedly arranged on the left part of the front part of the mounting bedplate. The first driving motor is fixedly arranged on the left part of the third fixed mounting seat through a motor shell, a motor shaft of the first driving motor extends forwards, and a synchronous belt pulley of the motor shaft is arranged on the motor shaft in a transmission manner. The second synchronous pulley is rotatably arranged on the right part of the third fixed mounting seat, and the rotating axis of the second synchronous pulley is parallel to the axis of the motor shaft of the first driving motor. The first timing belt is disposed around the motor shaft timing pulley and the second timing pulley. The first linear guide rail is fixedly arranged on the front part of the third fixed mounting seat along the left-right direction by the guide rail. The second fixed mounting seat of the movable material supporting mechanism is fixedly arranged on the sliding block of the first linear guide rail. The sliding block of the first linear guide rail is fixedly connected with the first synchronous belt through the corresponding synchronous belt clamp, so that the first driving motor drives the moving and supporting mechanism to move left and right along the first linear guide rail.

The technical scheme based on the corresponding technical schemes is as follows: still include and rise detection subassembly. The tension detection assembly comprises a pressure plate, a pressure plate swing arm, a pressure plate driving cylinder, a first detection light eye and a first detection baffle. The swing arm of the pressure plate is rotatably connected to the lower part of the second fixed mounting seat from the middle part of the swing arm of the pressure plate. The pressure plate is horizontally and fixedly arranged on the front side of the right end of the pressure plate swing arm in the front-back direction and is positioned on the right side of the second material supporting roller. The front part of the material pressing plate is provided with an anti-misoperation sleeve part, the anti-misoperation sleeve part is erected upwards, and the highest position of the upper part is higher than the lowest position of the lower part of the second material supporting roller. The pressure plate driving cylinder is hinged to the left end of the lower portion of the second fixed mounting seat through a cylinder body, a piston rod of the pressure plate driving cylinder extends rightwards, and the pressure plate driving cylinder is rotatably connected to the left portion of the pressure plate swing arm through a corresponding joint bearing. Thereby the pressure plate is driven by the pressure plate driving cylinder to press or lift the pressure plate through the pressure plate swing arm.

The first detection light eye is fixedly arranged on the right part of the rear side of the second fixed mounting seat, and the first detection baffle is fixedly arranged on the right part of the pressure plate swing arm and matched with the first detection light eye.

The technical scheme based on the corresponding technical schemes is as follows: prop the material mechanism and still include supplementary material pressing component. The auxiliary material pressing assembly comprises a lower tug, an upper pressing wheel driving cylinder and a lower tug mounting seat. The lower tug mounting seat is fixedly arranged on the lower part of the front part of the left side of the sewing machine head and is positioned on the left side of the needle. The lower tug is rotatably arranged on the lower tug mounting seat, and the rotating axis of the lower tug is horizontally arranged along the front-back direction. The upper pinch roller driving cylinder is fixedly arranged on the upper portion of the front portion of the left side of the sewing machine head from the cylinder body of the upper pinch roller driving cylinder in the vertical direction, a piston rod of the upper pinch roller driving cylinder extends downwards, a pinch roller seat is hinged to the end of the piston rod, and a hinged shaft is horizontally arranged in the front-back direction. The upper pinch roller is rotatably arranged on the pinch roller seat, and the rotating axis of the upper pinch roller is parallel to the hinge axis.

The technical scheme based on the corresponding technical schemes is as follows: also comprises a backstitch assembly. The backstitch assembly comprises a backstitch plate, a backstitch mounting seat, a backstitch connecting plate, a backstitch driving cylinder and a locking device. The upper part of the back-stitching plate is provided with a horizontal back-stitching part along the front-back direction. The front part of the inverted-L-shaped connecting part is arranged on the front part of the inverted-seam plate. The front right side of the connecting part is provided with a mounting part. The backstitch plate is fixedly arranged on the upper part of the backstitch connecting plate through a connecting part of the backstitch plate. The horizontal backstitch part of the backstitch plate is positioned on the upper side of the lower sewing table of the sewing machine head. The backstitch connecting plate is rotatably connected to the backstitch mounting seat from the lower part of the left side of the backstitch connecting plate. The backstitch driving cylinder is fixedly arranged on the lower part of the front part of the left side of the sewing machine head by a cylinder body. The backstitch mounting seat is fixedly arranged on a piston rod of the backstitch driving cylinder, and the backstitch driving cylinder drives the backstitch plate to move back and forth. The locking device is used for locking the backstitch connecting plate to prevent the backstitch connecting plate from freely rotating, and the backstitch connecting plate can rotate after the locking is released.

The technical scheme based on the corresponding technical schemes is as follows: the material raking mechanism comprises a lower material raking mechanism and a positioning assembly. The lower material-raking mechanism comprises a lower material-raking mounting seat, a lower material-raking roller mounting disc, a lower material-raking motor, a lower material-raking adjusting arm, a lower material-raking adjusting cylinder, a lower material-raking first synchronous belt pulley, a lower material-raking second synchronous belt pulley, a lower material-raking synchronous belt, a material supporting plate and a material guiding plate.

The lower raking mounting seat is fixedly arranged on the mounting bedplate. The lower material raking adjusting arm is L-shaped and is rotatably connected to the front part of the lower material raking mounting seat from the middle part of the lower material raking adjusting arm. The lower raking adjusting cylinder 6 is hinged to the upper portion of the rear portion of the right side of the lower raking mounting seat through a cylinder body, a piston rod of the lower raking adjusting cylinder is rotatably connected to the upper end of the rear portion of the lower raking adjusting arm through a corresponding joint bearing, and therefore the lower raking adjusting cylinder drives the lower raking adjusting arm to rotate, and the front portion of the lower raking adjusting arm is lifted up or pressed down. The lower material-raking roller mounting disc and the lower material-raking second synchronous belt pulley are coaxially and rotatably arranged at the front end of the lower material-raking adjusting arm, and the lower material-raking roller mounting disc and the lower material-raking second synchronous belt pulley are in transmission connection and synchronously rotate. The lower material scraping rollers are arranged on the lower material scraping roller mounting disc in a rotating mode at equal intervals of angles along the circumferential direction of the lower material scraping roller mounting disc. The axis of the lower material scraping roller mounting disc is vertical to the plane of the axis of each lower material scraping roller. The lower material raking motor is fixedly arranged on the right side of the rear part of the lower material raking mounting seat, and a motor shaft of the lower material raking motor extends leftwards and is arranged in parallel with a rotating shaft of the lower material raking second synchronous belt pulley. The lower material-raking first synchronous belt pulley is arranged on a motor shaft of the lower material-raking motor in a transmission way, and the lower material-raking synchronous belt is arranged around the lower material-raking first synchronous belt pulley and the lower material-raking second synchronous belt pulley. The material supporting plate is fixedly arranged on the left side of the lower material raking adjusting arm in the front-back direction. The left side of the material supporting plate is obliquely arranged in a manner that the material is low at the left side and high at the right side, so that the cloth can conveniently enter the upper part of the material supporting plate.

The guide plate is fixedly arranged on the front part of the lower material raking mounting seat and is positioned above the material supporting plate and the upper material raking roller mounting disc, and the lower side of the guide plate is obliquely arranged in a manner of being low on the left and high on the right. The right part of the material guide plate is an induction part with a lower left part and a higher right part. The front part of the material guide plate is provided with a material supporting part which is arranged in a U shape with a backward opening.

The positioning assembly comprises a first inductive switch and a second inductive switch. The first inductive switch is arranged on the front part of the lower side of the mounting bedplate, the front-back position of the first inductive switch can be adjusted, and the inductive position of the first inductive switch is positioned on the inductive part of the material guide plate. The second inductive switch is arranged on the front part of the lower side of the auxiliary bedplate and positioned on the right side of the first inductive switch, the front-back position of the second inductive switch can be adjusted, and the inductive position of the second inductive switch is positioned on the inductive part of the material guide plate.

The technical scheme based on the corresponding technical schemes is as follows: the material raking mechanism also comprises an upper material raking mechanism. The upper material-raking mechanism comprises an upper material-raking mounting seat, an upper material-raking roller mounting disc, an upper material-raking motor, an upper material-raking adjusting arm, an upper material-raking adjusting cylinder, an upper material-raking first synchronous belt pulley, an upper material-raking second synchronous belt pulley and an upper material-raking synchronous belt.

The upper material raking adjusting arm is L-shaped and is rotatably connected to the front part of the upper material raking mounting seat from the middle part of the upper material raking adjusting arm. The upper raking adjusting cylinder is hinged to the upper portion of the rear portion of the right side of the upper raking mounting seat through a cylinder body, a piston rod of the upper raking adjusting cylinder is rotatably connected to the upper end of the rear portion of the upper raking adjusting arm through a corresponding joint bearing, and therefore the upper raking adjusting cylinder drives the upper raking adjusting arm to rotate, and the front portion of the upper raking adjusting arm is lifted up or pressed down. The upper material-raking roller mounting disc and the upper material-raking second synchronous belt pulley are coaxially and rotatably arranged at the front end of the upper material-raking adjusting arm, and the upper material-raking roller mounting disc is in transmission connection with the upper material-raking second synchronous belt pulley and synchronously rotates. The upper material scraping rollers are arranged on the upper material scraping roller mounting disc in a rotating mode at equal intervals of angles along the circumferential direction of the upper material scraping roller mounting disc. The axis of the upper scraping roller mounting disc is vertical to the plane of the axis of each upper scraping roller. The upper material scraping roller mounting disc is positioned above the right part of the feeding supporting plate.

The upper material raking motor is fixedly arranged on the right side of the rear part of the upper material raking mounting seat, and a motor shaft of the upper material raking motor extends leftwards and is arranged in parallel with a rotating shaft of the upper material raking second synchronous belt pulley. The upper material-raking first synchronous belt pulley is arranged on a motor shaft of the upper material-raking motor in a transmission way, and the upper material-raking synchronous belt is arranged around the upper material-raking first synchronous belt pulley and the upper material-raking second synchronous belt pulley.

The technical scheme based on the corresponding technical schemes is as follows: the crimping assembly further comprises a first air tube, a fourth air tube, a fifth air tube, a sixth air tube and a seventh air tube. The first air pipe is fixedly arranged above the feeding supporting plate and blows air towards the feeding supporting plate below, so that cloth is tightly attached to the feeding supporting plate and keeps flat. The fourth air pipe is fixedly arranged on the left side of the material guide plate, blows towards the rear and is used for unfolding the rear edge of the cloth. The fifth air pipe is fixedly arranged on the right side of the material guide plate, blows towards the rear and is used for unfolding the rear edge of the cloth. The sixth air pipe is fixedly arranged on the left side of the material supporting plate, blows towards the rear, is used for supporting the rear edge of the cloth, and works together with the fourth air pipe to keep the edge of the cloth flat. The seventh air pipe is fixedly arranged on the right side of the material supporting plate, blows towards the rear, is used for supporting the rear edge of the cloth and is used for keeping the edge of the cloth flat under the combined action of the seventh air pipe and the fifth air pipe.

The technical scheme based on the corresponding technical schemes is as follows: a detection assembly is also included. The detection assembly includes and counter-light eye. The feeding supporting plate is provided with light eye holes penetrating through the upper part and the lower part, and the two light eyes of the opposite light eyes are respectively arranged on the upper side and the lower side of the light eye holes of the feeding supporting plate.

The technical scheme based on the corresponding technical schemes is as follows: the discharging device comprises a discharging connecting frame, a discharging driving device, a clamping positioning plate, a material turning frame and an anti-collision column. The discharging connecting frame is fixedly arranged on the right part of the lower side of the mounting bedplate and extends forwards out of the mounting bedplate. The clamping positioning plate is vertically and fixedly arranged on the front part of the lower side of the mounting bedplate along the left-right direction. The discharging driving device comprises a discharging cylinder and a rotating seat. The rotary seat is rotatably connected to the discharging connecting frame through the middle part of the rotary seat. The discharging cylinder is hinged to the discharging connecting frame through a cylinder body, a piston rod of the discharging cylinder extends forwards, and the discharging cylinder is rotatably connected to the lower end of the rotating seat through a corresponding joint bearing. The material turning frame is in an inverted L shape. The lower end of the right vertical rod part of the material turning frame is fixedly arranged in the upper part of the rotating seat. Thereby the upper cross rod part of the material turning frame is driven to swing back and forth through the discharging air cylinder.

The technical scheme based on the corresponding technical schemes is as follows: the material receiving device comprises a material receiving frame, a material discharging platform, a material receiving adjusting frame, a material receiving platform driving device and a material receiving slide rail. The material placing platform is fixedly arranged on the upper part of the material receiving frame and used for placing clothing and cloth to be sewn. The front part of the material receiving adjusting frame is rotatably connected to the lower part of the front part of the material receiving frame. The lower side of the rear part of the material receiving adjusting frame is hinged with an adjusting arm, the length of the adjusting arm can be adjusted, the other end of the adjusting arm is hinged to the rear part of the lower part of the material receiving frame, and the included angle between the material receiving adjusting frame and the horizontal plane is adjusted by changing the length of the adjusting arm. The material receiving slide rails are two, and the material receiving platform is arranged on the material receiving adjusting frame in a front-back sliding mode through the two material receiving slide rails. Receive material platform drive arrangement and drive actuating cylinder including the platform, the platform drives actuating cylinder and is followed around by its cylinder body to fixed setting on receiving the material alignment jig, with receive the mutual parallel arrangement of material slide rail, the piston rod that the platform drove actuating cylinder stretches out backward and receives material platform fixed connection to drive actuating cylinder by the platform and drive the seesaw of receiving the material platform on receiving the material alignment jig.

The utility model discloses following beneficial effect has: (1) the utility model discloses a drum is rolled up and is put quick-witted simple structure down, only need during the use artifical cloth cover can accomplish automatic hem on propping the material mechanism, make up and receive the material, degree of automation is higher, has improved production machining efficiency greatly.

(2) The utility model discloses an installation platen of workstation mechanism passes through the fixed setting of platen elevating system in the frame, can adjust the height of installation platen through platen elevating system, can adapt to the operator of different heights, and adaptability is strong, has improved operator's operation travelling comfort greatly, and the operation is more smooth and easy, is favorable to improving machining efficiency. The installation platen is provided with an auxiliary platen, and the fixed material supporting assembly, the crimping assembly, the detection assembly and the material raking mechanism of the material supporting mechanism are all arranged on the auxiliary platen, can be detached from the installation platen as a whole for transportation, and are convenient to assemble.

(3) The utility model discloses a fixed first material roller that props of propping material subassembly is equipped with O type rubber seal for increasing frictional force prevents that the cloth from along the first forward landing of axis that props the material roller, is favorable to improving the yield.

(4) The utility model discloses a removal props the second of expecting the subassembly and props the material roller and can remove about, adapts to the cloth of not unidimensional size, and adaptability is strong, and the range of application is wide. The second compression roller is located above each O-shaped rubber sealing ring of the second material supporting roller, so that the cloth can be prevented from slipping to cause stacking and wrinkling when rotating, the smoothness of the cloth is guaranteed, and the sewing quality is favorably improved.

(5) The utility model discloses a prop material mechanism and be equipped with supplementary material subassembly of pressing, go up the pinch roller and can upwards or downstream along with the change of cloth thickness, when guaranteeing that the cloth passes through smoothly, rely on self action of gravity good throughout with cloth corresponding part partial pressure under on the tow boat, make the cloth keep good tight state that rises after making out, prevent that the cloth from kick-backing to the aircraft nose direction, be favorable to improving and make up the quality.

(6) The utility model discloses a tight determine module that rises can judge that the cloth rises and tightly spends suitable, keeps the cloth level and smooth, has improved the quality of making up greatly. The front portion of the pressure plate is provided with an anti-misoperation sleeve portion, the anti-misoperation sleeve portion is erected upwards, the cloth can be prevented from being sleeved on the upper side of the pressure plate by mistake, the cloth is ensured to be sleeved on the lower side of the pressure plate, and the efficiency of workers is improved.

(7) The utility model discloses a turn-up subassembly is equipped with first trachea, the second trachea, the third trachea, the fourth trachea, the fifth trachea, sixth trachea and seventh trachea, first trachea enables the cloth to paste and keeps leveling on the feeding layer board, the second trachea enables the cloth to press close to the response portion of smooth eye pick-up plate, improve and judge the rate of accuracy, the left part downside of third trachea is equipped with a row of venthole along its axial, each venthole all sets up along the radial of third trachea, advance the below and blow, make the part of cloth waiting the turn-up overturn forward, fourth trachea and fifth trachea blow towards the rear, can expand the rear portion edge of cloth (the cloth has elasticity, can form corresponding inside roll up), sixth trachea and seventh trachea blow towards the rear, the cloth edge supporting device is used for supporting the rear edge of the cloth and keeping the edge of the cloth flat under the combined action of the fourth air pipe and the fifth air pipe.

(8) The utility model discloses a turn-up subassembly is equipped with width adjustment assembly, can adapt to the different requirements of making up stitch seam width, and the cloth behind first supplementary presser foot and the supplementary presser foot of second enable the hem keeps leveling.

(9) The utility model discloses be equipped with the backstitch subassembly, can change the direction of falling of the cloth of two cloth seam departments, make the joint department of two bone positions keep being opposite direction in week like this.

(10) The utility model discloses a locating component is used for detecting the terminal position behind the turn-up of cloth, gives signal control and goes up to take off material mechanism and take off material mechanism down and make corresponding action, dials the cloth forward or backward through taking off the material gyro wheel of taking off on the material gyro wheel mounting disc, ensures that the width of hem is unanimous basically, has improved processingquality greatly, further improves degree of automation simultaneously, does not need artificial intervention to rectify, makes up the better and stable of quality.

(11) The utility model discloses a be equipped with discharge apparatus, can be automatic take off the cloth from propping material mechanism, improved production efficiency greatly.

(12) The utility model discloses be equipped with material collecting device, material collecting device's blowing platform is used for putting the cloth of waiting to make up, receives the material platform and is used for depositing the good cloth of making up that discharge apparatus took off from propping material mechanism, has improved the convenience of workman's operation greatly, has further improved production efficiency.

(13) The utility model discloses be equipped with the determine module, detect the position of cloth rear end (unedged end or terminal after the turn-up) through third inductive switch, give control signal control and go up to take off material mechanism and take off material mechanism down and make corresponding action, can judge through fourth inductive switch whether the workman will cloth cover on equipment and switch inductive switch and take off material mechanism down and control on going up, find out the joint department that needs the backstitch through the eyes that jet-rays, further improved the degree of automation of equipment.

Drawings

Fig. 1 is a schematic structural view of the drum rolling and swinging machine of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a right-side view of fig. 1.

Fig. 4 is a schematic top view of fig. 1.

Fig. 5 is a schematic view as viewed from the upper right front of fig. 1.

Fig. 6 is a schematic view when viewed from the front left upper side of fig. 1.

Fig. 7 is a schematic view of fig. 1 with the discharging device and the receiving device removed.

Fig. 8 is a schematic view when viewed from the left front lower side of fig. 7.

Fig. 9 is a schematic view as viewed from the front right lower side of fig. 7.

Fig. 10 is a schematic view of the table mechanism as viewed from the lower right rear side of fig. 1.

Fig. 11 is a schematic view of the table mechanism with the mounting table removed, as viewed from above in fig. 1.

Fig. 12 is a schematic view of the elevating link frame of the table mechanism as viewed from the upper right front of fig. 1.

Fig. 13 is a schematic view of the material collecting device as viewed from the left rear lower side of fig. 1.

Fig. 14 is an enlarged schematic view of the tripper device as viewed from the upper right front of fig. 1.

Fig. 15 is an enlarged schematic view of the moving material supporting assembly of the material supporting mechanism when viewed from the upper right rear side of fig. 1.

Fig. 16 is an enlarged schematic view of the moving material supporting assembly of the material supporting mechanism when viewed from the front left upper side of fig. 1.

FIG. 17 is an enlarged schematic view of the backstitch assembly as viewed from the top left front of FIG. 1.

Fig. 18 is an enlarged schematic view of the material supporting mechanism, the hemming assembly, the detecting assembly and the raking mechanism when viewed from the front left upper side of fig. 1, wherein the raking mechanism is in a state of waiting for material distribution.

Fig. 19 is an enlarged schematic view of the material supporting mechanism, the hemming assembly, the detecting assembly and the material raking mechanism when viewed from the left rear lower side of fig. 1, wherein the material raking mechanism is in a state of waiting for material distribution.

Fig. 20 is an enlarged schematic view of the fixed material supporting assembly of the material supporting mechanism when viewed from the front left upper side of fig. 1.

Fig. 21 is an enlarged schematic view of the fixed material supporting assembly of the material supporting mechanism when viewed from the left rear upper side of fig. 1.

Fig. 22 is an enlarged schematic view of a portion a in fig. 3.

Fig. 23 is an enlarged schematic view of the upper raking mechanism as viewed from the front left upper side of fig. 1.

Fig. 24 is an enlarged schematic view of the lower raking mechanism as viewed from the front left lower side of fig. 1, wherein the raking mechanism is in a state of being ready for discharging the cloth.

Fig. 25 is an enlarged schematic view of the lower raking mechanism as viewed from the right front upper side of fig. 1, wherein the raking mechanism is in a state of being ready to discharge a cloth.

The reference numbers in the drawings are:

a worktable mechanism 1, a frame 1-1, an installation bedplate 1-2, an auxiliary bedplate 1-21, a bedplate lifting mechanism 1-3, a lifting connecting frame 1-31, a worm and gear box 1-32, a worm shaft 1-33, a crank 1-34, a gear 1-35, a rack 1-36,

the device comprises a sewing machine head 2, a material supporting mechanism 3, a fixed material supporting component 3a, a first fixed mounting seat 3a-1, a first material supporting roller 3a-2, an O-shaped rubber sealing ring 3a-21, a material guiding part 3a-22, a first roller driving shaft, a first roller driving motor 3a-3, a first press roller 3a-4 and a press roller driving cylinder 3a-5,

a movable material supporting component 3b, a second fixed mounting seat 3b-1, a second material supporting roller 3b-2, a second roller driving motor 3b-3, a second driven shaft 3b-4, a movable material supporting motor synchronous pulley 3b-5, a movable material supporting second synchronous pulley 3b-6, a movable material supporting synchronous belt 3b-7, a second press roller 3b-8, a second press roller mounting plate 3b-9, a second press roller driving cylinder 3b-10, a first driving component 3c, a third fixed mounting seat 3c-1, a first driving motor 3c-2, a motor shaft synchronous pulley 3c-3, a second synchronous pulley 3c-4, a first synchronous belt 3c-5, a first linear guide rail 3c-6, an auxiliary material pressing component 3d, a lower dragging wheel 3d-1, an upper pinch roller 3d-2, an upper pinch roller driving cylinder 3d-3, a pinch roller seat 3d-31, a lower tug mounting seat 3d-4,

a tension detection component 4, a pressure plate 4-1, an anti-misoperation sleeve part 4-11, a pressure plate swing arm 4-2, a balancing weight 4-21, a pressure plate driving cylinder 4-3, a first detection photoeye 4-4, a first detection baffle 4-5,

a crimping component 5, a feeding supporting plate 5-1, a smooth hole 5-11, a width adjusting component 5-2, a positioning backup plate 5-21, a gas blowing hole 5-21a, a first auxiliary presser foot 5-22, a second auxiliary presser foot 5-23,

a first air pipe 5-3, a second air pipe 5-4, a third air pipe 5-5, an air outlet hole 5-51, a fourth air pipe 5-6, a fifth air pipe 5-7, a sixth air pipe 5-8, a seventh air pipe 5-9, a backstitch assembly 6, a backstitch plate 6-1, a horizontal backstitch portion 6-1a, a connecting portion 6-1b, an installation portion 6-1c, a backstitch installation seat 6-2, a backstitch connecting plate 6-3, a backstitch driving cylinder 6-4, a locking device 6-5, a raking mechanism 7, an upper raking mechanism 7a, an upper raking installation seat 7a-1, an upper raking roller 7a-2, an upper raking roller installation plate 7a-3, an upper raking motor 7a-4, an upper raking adjusting arm 7a-5, an upper raking adjusting cylinder 7a-6, a first upper material-raking synchronous belt pulley 7a-7, a second upper material-raking synchronous belt pulley 7a-8, an upper material-raking synchronous belt,

a lower material raking mechanism 7b, a lower material raking mounting seat 7b-1, a lower material raking roller 7b-2, a lower material raking roller mounting disc 7b-3, a lower material raking motor 7b-4, a lower material raking adjusting arm 7b-5, a lower material raking adjusting cylinder 7b-6, a lower material raking first synchronous belt wheel 7b-7, a lower material raking second synchronous belt wheel 7b-8, a lower material raking synchronous belt, a material supporting plate 7b-10, a material guiding plate 7b-11, a material supporting part 7b-111, an induction part 7b-112, a positioning component 7c, a first induction switch 7c-1 and a second induction switch 7c-2,

a discharging device 8, a discharging connecting frame 8-1, a discharging driving device 8-2, a discharging cylinder 8-21, a rotating seat 8-22, a clamping and positioning plate 8-3, a material turning frame 8-4, an anti-collision column 8-5,

a material receiving device 9, a material receiving frame 9-1, a material discharging platform 9-2, a material receiving adjusting frame 9-3, an adjusting arm 9-31, a material receiving platform 9-4, a material receiving platform driving device 9-5, a platform driving air cylinder 9-51 and a material receiving slide rail 9-6,

the device comprises a detection assembly 10, a third inductive switch 10-1, a fourth inductive switch 10-2, a photo eye detection plate 10-3, a sensing part 10-3a and an opposite photo eye 10-4.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. The description of the orientation of the utility model is performed according to the orientation shown in fig. 1, that is, the up-down left-right direction shown in fig. 1 is the up-down left-right direction of the description, the side towards which fig. 1 faces is the front side, and the side departing from fig. 1 is the rear side.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used only for convenience in describing the present invention or simplifying the description, but do not indicate that a particular orientation must be provided.

(example 1)

See fig. 1 to 25, the utility model discloses a drum is rolled up lower hem machine includes worktable mechenism 1, sewing machine head 2, props material mechanism 3, rises and tightly surveys detection component 4, turn-up subassembly 5, backstitch subassembly 6, takes off material mechanism 7, discharge apparatus 8, material collecting device 9 and detection component 10.

Referring to fig. 1 to 12, the worktable mechanism 1 includes a frame 1-1, a mounting bedplate 1-2, and a bedplate elevating mechanism 1-3. The installation bedplate 1-2 is fixedly arranged on the frame 1-1 through a bedplate lifting mechanism 1-3, and the height of the installation bedplate 1-2 can be adjusted through the bedplate lifting mechanism 1-3. The right part of the upper side of the installation bedplate 1-2 is fixedly provided with an auxiliary bedplate 1-21. The bedplate lifting mechanism 1-3 comprises a lifting connecting frame 1-31, a worm and gear box 1-32, a worm shaft 1-33, a crank 1-34, a gear 1-35 and a rack 1-36. The left part and the right part of the lifting connecting frame 1-31 are respectively arranged on the left part and the right part of the frame 1-1 in a sliding way and are arranged in a sliding way along the up-down direction. The left part and the right part of the lifting connecting frame 1-31 are respectively provided with a rack 1-36, and the racks 1-36 are arranged along the vertical direction. The worm gear box 1-32 is fixedly arranged on the frame 1-1. The worm shafts 1-33 are arranged on the machine frame 1-1 in a left-right rotating mode, and the worm shafts 1-33 are driven to rotate by the worm wheels of the worm gear boxes 1-32. The crank 1-34 is arranged on the worm of the worm gear box 1-32 in a transmission way. Thereby rotating the worm shafts 1 to 33 by rotating the crank 1 to 34. The left end and the right end of the worm shaft 1-33 are respectively provided with a gear 1-35 in a transmission way. The gears 1-35 at 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 installation bedplate 1-2 is fixedly arranged on the lifting connecting frame 1-31. The sewing machine head 2 is fixedly arranged on the mounting bedplate 1-2.

Referring to fig. 1 to 9, 15, 16, and 18 to 21, the material supporting mechanism 3 includes a fixed material supporting assembly 3a, a movable material supporting assembly 3b, a first driving assembly 3c, and an auxiliary pressing assembly 3 d. The first driving component 3c drives the movable material supporting component 3b to move left and right, and the movable material supporting component and the fixed material supporting component 3a are matched to support cloth (in the embodiment, the cloth is two pieces of cloth which are sewn together and are cylindrical after being rolled and are supported, and the axial direction of the cloth is arranged along the front and back directions) to form a cylinder.

Referring to fig. 1 to 9 and 18 to 21, the fixed material supporting assembly 3a includes a first fixed mounting seat 3a-1, a first material supporting roller 3a-2, a first roller driving shaft, a first roller driving motor 3a-3, a first press roller 3a-4 and a press roller driving cylinder 3 a-5. The first fixed mounting seat 3a-1 is fixedly arranged on the auxiliary bedplate 1-21. The first roller driving shaft is rotatably provided on the left side of the first fixed mount 3a-1 in the front-rear direction. The first material supporting roller 3a-2 is coaxially and fixedly arranged on the front part of the driving shaft of the first roller. The first material supporting roller 3a-2 is positioned at the right side of the feeding supporting plate 5-1. The first roller driving motor 3a-3 is fixedly arranged at the rear part of the first fixed mounting seat 3a-1 by a motor shell, and a motor shaft of the first roller driving motor is in transmission connection with the rear end of the first roller driving shaft through a coupling, so that the first roller driving motor 3a-3 drives the first material supporting roller 3a-2 to rotate. The first material supporting roller 3a-2 is coaxially provided with an O-shaped rubber sealing ring 3a-21 for increasing friction force and preventing the cloth from sliding forwards along the axis of the first material supporting roller 3 a-2. The rear part of the first material supporting roller 3a-2 is provided with a material guiding part 3a-21, and the material guiding part 3a-21 is in a circular truncated cone shape with a large front part and a small back part. The compression roller driving cylinder 3a-5 is fixedly arranged on the first fixed mounting seat 3a-1 by a cylinder body, and a piston rod of the compression roller driving cylinder extends towards the lower left. The first pressing roller 3a-4 is rotatably arranged at the end of a piston rod of the pressing roller driving cylinder 3a-5 through a corresponding mounting seat, the pressing roller driving cylinder 3a-5 drives the first pressing roller 3a-4 to be close to or far away from the first material supporting roller 3a-2, when the cloth conveying device is used, the pressing roller driving cylinder 3a-5 drives the first pressing roller 3a-4 to be close to the first material supporting roller 3a-2, the corresponding part of cloth is clamped by the first pressing roller 3a-4 and the first material supporting roller 3a-2, the first material supporting roller 3a-2 can rotate to convey the cloth, and the cloth is prevented from slipping.

Referring to fig. 1 to 9, 15 and 16, the movable material supporting assembly 3b comprises a second fixed mounting base 3b-1, a second material supporting roller 3b-2, a second roller driving motor 3b-3, a second driven shaft 3b-4, a movable material supporting motor synchronous pulley 3b-5, a movable material supporting second synchronous pulley 3b-6, a movable material supporting synchronous belt 3b-7, a second press roller 3b-8, a second press roller mounting plate 3b-9 and a second press roller driving cylinder 3 b-10. The second roller driving motor 3b-3 is fixedly arranged on the left part of the rear side of the second fixed mounting seat 3b-1 through a motor shell, a motor shaft of the second roller driving motor extends forwards, and a moving material supporting motor synchronous pulley 3b-5 is arranged on the motor shaft of the second roller driving motor 3b-3 in a transmission mode. The second driven shaft 3b-4 is rotatably arranged on the right part of the second fixed mounting seat 3b-1 in the front-back direction. The second material supporting roller 3b-2 is sleeved on the front part of the second driven shaft 3b-4 and is in transmission fixed connection with the second driven shaft 3 b-4. A group of O-shaped rubber sealing rings 3b-21 are arranged on the rear part of the second material supporting roller 3b-2, and the group of O-shaped rubber sealing rings 3b-21 are sequentially arranged from back to front. The second synchronous belt wheel 3b-6 for moving and supporting materials is arranged at the rear end of the second driven shaft 3b-4 in a transmission way. The movable material supporting synchronous belt 3b-7 is arranged around a movable material supporting motor synchronous belt pulley 3b-5 and a movable material supporting second synchronous belt pulley 3b-6, so that the second material supporting roller 3b-2 is driven by the second roller driving motor 3b-3 to rotate for feeding. The second press roll 3b-8 is rotatably arranged on the front side of the right part of the second press roll mounting plate 3b-9 in the front-back direction and is positioned above each O-shaped rubber sealing ring 3b-21 of the second material supporting roll 3 b-2. The second press roll mounting plate 3b-9 is rotatably connected to the upper right part of the second fixed mounting base 3b-1 from the lower middle part thereof. The second pressing roller driving cylinder 3b-10 is hinged to the left part of the upper part of the second fixed mounting seat 3b-1 through a cylinder body, a piston rod of the second pressing roller driving cylinder extends rightwards and is connected to the left part of the second pressing roller mounting plate 3b-9 through a joint bearing, so that the second pressing roller driving cylinder 3b-10 drives the second pressing roller 3b-8 to lift or press down, the second pressing roller 3b-8 and the second material supporting roller 3b-2 clamp the corresponding part of the cloth, the second material supporting roller 3b-2 can rotate to carry out cloth conveying, and the cloth is prevented from slipping.

Referring to fig. 1 to 9, 15 and 16, the first driving assembly 3c includes a third fixed mount 3c-1, a first driving motor 3c-2, a motor shaft timing pulley 3c-3, a second timing pulley 3c-4, a first timing belt 3c-5 and a first linear guide 3 c-6. The third fixed mounting seat 3c-1 is fixedly arranged on the left part of the front part of the mounting bedplate 1-2. The first driving motor 3c-2 is fixedly arranged on the left part of the third fixed mounting seat 3c-1 by a motor shell, a motor shaft of the first driving motor extends forwards, and a motor shaft synchronous belt wheel 3c-3 is arranged on the motor shaft in a transmission way. The second synchronous pulley 3c-4 is rotatably provided on the right portion of the third fixed mount 3c-1 with its rotational axis arranged in parallel with the axis of the motor shaft of the first drive motor 3 c-2. The first timing belt 3c-5 is provided around the motor shaft timing pulley 3c-3 and the second timing pulley 3 c-4. The first linear guide rail 3c-6 is fixedly arranged on the front part of the third fixed installation seat 3c-1 along the left-right direction by the guide rail. The second fixed mounting seat 3b-1 of the movable material supporting mechanism 3b is fixedly arranged on a sliding block of the first linear guide rail 3 c-6. The sliders of the first linear guide 3c-6 are fixedly coupled to the first synchronous belt 3c-5 by corresponding synchronous belt clips, so that the moving supporting mechanism 3b is driven to move left and right along the first linear guide 3c-6 by the first driving motor 3 c-2.

Referring to fig. 1 to 9, the auxiliary material pressing assembly 3d includes a lower tug 3d-1, an upper pressing wheel 3d-2, an upper pressing wheel driving cylinder 3d-3, and a lower tug mounting base 3 d-4. The lower tug mounting seat 3d-4 is fixedly arranged on the lower portion of the front portion of the left side of the sewing machine head 2 and is positioned on the left side of a machine needle, namely one side of a discharge material after cloth hemming sewing, the lower tug 3d-1 is rotatably arranged on the lower tug mounting seat 3d-4, and the rotating axis of the lower tug 3d-1 is horizontally arranged along the front-back direction. The upper pinch roller driving cylinder 3d-3 is fixedly arranged on the upper part of the front part of the left side of the sewing machine head 2 from the cylinder body along the vertical direction, the piston rod of the upper pinch roller driving cylinder 3d-3 extends downwards, the end head of the piston rod is hinged with a pinch roller seat 3d-31, and the hinged shaft is horizontally arranged along the front-back direction. The upper pinch roller 3d-2 is rotatably arranged on the pinch roller seat 3d-31, and the rotating axis and the hinge axis are arranged in parallel. When the cloth pressing device is used, the upper pressing wheel driving cylinder 3d-3 drives the upper pressing wheel 3d-2 to fall downwards onto the lower dragging wheel 3d-1 to press cloth, when the thickness of the cloth between the upper pressing wheel 3d-2 and the lower dragging wheel 3d-1 changes (for example, after the cloth is turned up, the thickness of the cloth can be changed from a single layer to two layers, and the seam of the cylindrical cloth is usually the thickness of three layers of cloth before the turned edge), the upper pressing wheel 3d-2 can move upwards or downwards along with the change of the thickness of the cloth, so that the corresponding part of the cloth is pressed on the lower dragging wheel 3d-1 well all the time under the action of self gravity while the cloth passes through smoothly.

Referring to fig. 16 and 17, the tension detection assembly 4 comprises a pressure plate 4-1, a pressure plate swing arm 4-2, a pressure plate driving cylinder 4-3, a first detection optical eye 4-4 and a first detection baffle 4-5. The swing arm 4-2 of the pressure plate is rotatably connected to the lower part of the second fixed mounting seat 3b-1 from the middle part thereof. The left end of the pressure plate swing arm 4-2 is provided with a balancing weight 4-21. The pressure plate 4-1 is horizontally and fixedly arranged on the front side of the right end of the pressure plate swing arm 4-2 in the front-back direction and is positioned on the right side of the second material supporting roller 3 b-2. An anti-misoperation sleeve part 4-11 is arranged at the front part of the pressure plate 4-1, the anti-misoperation sleeve part 4-11 is erected upwards, the highest part of the upper part is higher than the lowest part of the lower part of the second material supporting roller 3b-2, so that the cloth can be prevented from being sleeved on the upper side of the pressure plate 4-1 by mistake, and the cloth is ensured to be sleeved on the lower side of the pressure plate 4-1. The left side of the pressure plate 4-1 is arranged in a left-high and right-low mode, and the right side of the pressure plate 4-1 is arranged in a right-high and left-low mode, so that the cloth is guided, and the cloth can smoothly rotate along the lower side of the pressure plate 4-1. The pressure plate driving cylinder 4-3 was made of a mini cylinder made of 10-CA stainless steel MI10 by alder. The pressure plate driving cylinder 4-3 is hinged to the left end of the lower portion of the second fixed mounting seat 3b-1 through a cylinder body, a piston rod of the pressure plate driving cylinder extends rightwards, and the pressure plate driving cylinder is rotatably connected to the left portion of the pressure plate swing arm 4-2 through a corresponding joint bearing. Thereby the pressure plate drives the cylinder 4-3 to press down or lift up the pressure plate 4-1 through the pressure plate swing arm 4-2. The first detection light eye 4-4 is fixedly arranged on the right part of the rear side of the second fixed mounting seat 3b-1, and the first detection baffle 4-5 is fixedly arranged on the right part of the pressure plate swing arm 4-2 and matched with the first detection light eye 4-4. When the sewing machine is used, the pressure plate driving cylinder 4-3 drives the right part of the pressure plate swing arm 4-2 to drive the pressure plate 4-1 to press on cloth downwards, meanwhile, the first detection baffle 4-5 moves downwards, and when the first detection light eye 4-4 cannot detect the first detection baffle 4-5, the cloth is proper in tension degree and can be sewn. When the first detection photoeye 4-4 can still detect the first detection baffle 4-5, the cloth is tight, the first driving motor 3c-2 drives the movable material supporting mechanism 3b to move rightwards along the first linear guide rail 3c-6, and the cloth is loosened.

Referring to fig. 1 to 9, 18 to 21, 23 and 24, the crimping assembly 5 includes a feed blade 5-1, a width adjusting assembly 5-2, a first air duct 5-3, a second air duct 5-4, a third air duct 5-5, a fourth air duct 5-6, a fifth air duct 5-7, a sixth air duct 5-8 and a seventh air duct 5-9. The feeding supporting plate 5-1 is horizontally and fixedly arranged on the front part of the lower material raking mounting seat 7b-1 and is positioned on the right side of the sewing machine head. The right end of the feeding supporting plate 5-1 is obliquely arranged towards the lower right, so that cloth can conveniently enter the upper part of the feeding supporting plate 5-1. The feeding supporting plate 5-1 is provided with a smooth eye hole 5-11 penetrating through the upper part and the lower part.

The width adjustment assembly 5-2 includes a positioning fence 5-21, a first auxiliary presser foot 5-22 and a second auxiliary presser foot 5-23. The positioning backup plate 5-21 is fixedly arranged on a sewing table surface at the lower part of the sewing machine head 2 and is positioned behind the machine needle, the distance from the positioning backup plate to the machine needle in the front-back direction can be adjusted, the distance is also the width of a sewing stitch, and after the positioning backup plate 5-21 is arranged, the front side surface of the second fixed installation seat 3b-1 of the movable material supporting component 3b and the front end surface of the positioning backup plate 5-21 are adjusted to be in the same vertical plane arranged in the left-right direction. The front side of the positioning backup plate 5-21 is provided with a forward air blowing hole 5-21a, and the air blowing hole 5-21a blows air in advance for smoothing the edge of the cloth. The first auxiliary presser foot 5-22 and the second auxiliary presser foot 5-23 are fixedly arranged on the positioning backup plate 5-21 from left to right in sequence and used for keeping the cloth after edge folding flat and preventing the cloth from being scattered.

The first air pipe 5-3 is fixedly arranged on the lower material raking mounting seat 7b-1, is positioned above the feeding supporting plate 5-1, and blows air towards the feeding supporting plate 5-1 below to ensure that the cloth is tightly attached to the feeding supporting plate 5-1 and keeps flat. The second air pipe 5-4 is fixedly arranged on the first fixed mounting base 3a-1 and blows air towards the rear side of the sensing part 10-3a of the photo eye detection plate 10-3, so that the cloth is close to the sensing part 10-3a of the photo eye detection plate 10-3. The third air pipe 5-5 is fixedly arranged on the first fixed mounting seat 3a-1 and is positioned above the rear side of the feeding supporting plate 5-1, and the left part of the third air pipe is forward and the right part of the third air pipe is backward inclined in the horizontal direction. The lower side of the left part of the third air pipe 5-5 is provided with a row of air outlet holes 5-51 along the axial direction, each air outlet hole 5-51 is arranged along the radial direction of the third air pipe 5-5, and air is blown towards the front lower part to ensure that the part to be curled of the cloth is turned over forwards.

The fourth air tube 5-6 is fixedly provided on the left side of the guide plate 7b-11, and blows air toward the rear for spreading the rear edge of the cloth (the cloth has elasticity and is formed into a corresponding inward roll). The fifth air pipe 5-7 is fixedly arranged on the right side of the material guide plate 7b-11, blows towards the rear and is used for unfolding the rear edge of the cloth. The sixth air pipe 5-8 is fixedly arranged on the left side of the material supporting plate 7b-10, blows towards the rear, is used for supporting the rear edge of the cloth, and is used for keeping the edge of the cloth flat under the combined action of the sixth air pipe 5-6. The seventh air pipe 5-9 is fixedly arranged on the right side of the material supporting plate 7b-10, blows air towards the rear, is used for supporting the rear edge of the cloth, and is used for keeping the edge of the cloth flat under the combined action of the seventh air pipe 5-7.

Referring to fig. 1 to 9 and 17, the backstitch assembly 6 comprises a backstitch plate 6-1, a backstitch mounting seat 6-2, a backstitch connecting plate 6-3, a backstitch driving cylinder 6-4 and a locking device 6-5.

The upper part of the back-off plate 6-1 is provided with a horizontal back-off part 6-1a along the front-back direction. The front part of the inverted-L-shaped connecting part 6-1b is arranged at the front part of the inverted-seam plate 6-1, and the right side of the front part of the connecting part 6-1b is provided with a mounting part 6-1 c. The backstitch plate 6-1 is fixedly arranged on the upper part of the backstitch connecting plate 6-3 through a connecting part 6-1 b. The horizontal backstitch portion 6-1a of the backstitch plate 6-1 is located on the upper side of the lower sewing table of the sewing head 2. The backstitch connecting plate 6-3 is rotatably connected to the backstitch mounting seat 6-2 from the lower part of the left side of the backstitch connecting plate. And the backstitch driving cylinder 6-4 adopts a CXSM10-30 duplex cylinder of SMC. The backstitch driving cylinder 6-4 is fixedly arranged on a lower tug mounting seat 3d-4 of the auxiliary material pressing assembly 3d through a cylinder body and is positioned below the lower tug 3 d-1. The backstitch mounting seat 6-2 is fixedly arranged on a piston rod of the backstitch driving cylinder 6-4, and the backstitch driving cylinder 6-4 drives the backstitch plate 6-1 to move back and forth. The locking device 6-5 adopts a Misimm PXKN5 knob plunger. The locking device 6-5 is fixedly arranged on the rear side of the backstitch mounting seat 6-2, and a pin shaft of the locking device penetrates through the backstitch mounting seat 6-2 from back to front and then extends into a corresponding positioning hole in the backstitch connecting plate 6-3, so that the backstitch connecting plate 6-3 cannot rotate, and the horizontal backstitch part 6-1a of the backstitch plate 6-1 is in a horizontal state. When the bobbin in the lower part of the sewing machine head 2 needs to be replaced, the pin of the locking device 6-5 is moved backwards, so that the pin is withdrawn from the positioning hole on the backstitch connecting plate 6-3, then the upper part of the backstitch connecting plate 6-3 is rotated leftwards, the horizontal backstitch part 6-1a of the backstitch plate 6-1 can be far away from the sewing machine head 2, and therefore the lower part of the sewing machine head 2 is opened, and the bobbin is replaced.

Referring to fig. 1 to 9, 18, 19, 22 to 25, the raking mechanism 7 includes an upper raking mechanism 7a, a lower raking mechanism 7b and a positioning assembly 7 c.

Referring to fig. 1 to 9, 18, 19 and 23, the upper material raking mechanism 7a includes an upper material raking mounting base 7a-1, an upper material raking roller 7a-2, an upper material raking roller mounting plate 7a-3, an upper material raking motor 7a-4, an upper material raking adjusting arm 7a-5, an upper material raking adjusting cylinder 7a-6, an upper material raking first synchronous pulley 7a-7, an upper material raking second synchronous pulley 7a-8 and an upper material raking synchronous belt (not shown in the figures).

The upper material raking adjusting arm 7a-5 is L-shaped, and the upper material raking adjusting arm 7a-5 is rotatably connected to the front part of the upper material raking mounting seat 7a-1 from the middle part of the upper material raking adjusting arm. The upper raking adjusting cylinder 7a-6 is hinged to the upper portion of the rear portion of the right side of the upper raking mounting seat 7a-1 through a cylinder body, a piston rod of the upper raking adjusting cylinder is rotatably connected to the upper end of the rear portion of the upper raking adjusting arm 7a-5 through a corresponding joint bearing, and therefore the upper raking adjusting cylinder 7a-6 drives the upper raking adjusting arm 7a-5 to rotate, and the front portion of the upper raking adjusting arm 7a-5 is lifted up or pressed down. The upper material-raking roller mounting disc 7a-3 and the upper material-raking second synchronous belt pulley 7a-8 are coaxially and rotatably arranged at the front end of the upper material-raking adjusting arm 7a-5, and the upper material-raking roller mounting disc 7a-3 is in transmission connection with the upper material-raking second synchronous belt pulley 7a-8 and synchronously rotates. The upper scraping roller mounting disc 7a-3 is positioned on the right side of the first air pipe 5-3. The number of the upper material scraping rollers 7a-2 is 12 in the embodiment. The upper material scraping rollers 7a-2 are arranged on the upper material scraping roller mounting disc 7a-3 in a rotating mode at equal intervals and angles along the circumferential direction of the upper material scraping roller mounting disc 7 a-3. The axis of the upper scraping roller mounting disc 7a-3 is vertical to the plane of the axis of each upper scraping roller 7 a-2. An O-shaped rubber sealing ring is sleeved on the upper material scraping roller 7a-2 and used for increasing friction force and facilitating replacement. The upper scraping roller mounting disc 7a-3 is positioned above the right part of the feeding supporting plate 5-1.

The upper raking motor 7a-4 is fixedly arranged on the right side of the rear part of the upper raking mounting seat 7a-1, and a motor shaft of the upper raking motor extends leftwards and is arranged in parallel with a rotating shaft of the upper raking second synchronous belt pulley 7 a-8. The upper material raking first synchronous belt pulley 7a-7 is arranged on a motor shaft of the upper material raking motor 7a-4 in a transmission mode, and the upper material raking synchronous belt is arranged around the upper material raking first synchronous belt pulley 7a-7 and the upper material raking second synchronous belt pulley 7 a-8.

Referring to fig. 1 to 9, 18, 19, 24 and 25, the lower material raking mechanism 7b comprises a lower material raking mounting base 7b-1, a lower material raking roller 7b-2, a lower material raking roller mounting disc 7b-3, a lower material raking motor 7b-4, a lower material raking adjusting arm 7b-5, a lower material raking adjusting cylinder 7b-6, a lower material raking first synchronous pulley 7b-7, a lower material raking second synchronous pulley 7b-8, a lower material raking synchronous belt (not shown in the figure), a material supporting plate 7b-10 and a material guiding plate 7 b-11.

The lower raking mounting seat 7b-1 is fixedly arranged on the auxiliary bedplate 1-21 and is positioned at the left of the first fixed mounting seat 3 a-1. The lower raking adjusting arm 7b-5 is L-shaped, and the lower raking adjusting arm 7b-5 is rotatably connected to the front part of the lower raking mounting seat 7b-1 from the middle part of the lower raking adjusting arm. The lower material raking adjusting cylinder 7b-6 is hinged on the upper part of the rear part of the right side of the lower material raking mounting seat 7b-1 through a cylinder body, and a piston rod of the lower material raking adjusting cylinder is rotatably connected on the upper end of the rear part of the lower material raking adjusting arm 7b-5 through a corresponding joint bearing, so that the lower material raking adjusting cylinder 7b-6 drives the lower material raking adjusting arm 7b-5 to rotate, and the front part of the lower material raking adjusting arm 7b-5 is lifted up or pressed down. The lower material-raking roller mounting disc 7b-3 and the lower material-raking second synchronous belt pulley 7b-8 are coaxially and rotatably arranged at the front end of the lower material-raking adjusting arm 7b-5, and the lower material-raking roller mounting disc 7b-3 is in transmission connection with the lower material-raking second synchronous belt pulley 7b-8 and synchronously rotates. The number of the lower scraping rollers 7b-2 is 12 in the embodiment. The lower scraping rollers 7b-2 are arranged on the lower scraping roller mounting disc 7b-3 in a rotating mode at equal intervals and angles along the circumferential direction of the lower scraping roller mounting disc 7 b-3. The axis of the lower scraping roller mounting disc 7b-3 is vertical to the plane of the axis of each lower scraping roller 7 b-2. An O-shaped rubber sealing ring is sleeved on the lower scraping roller 7b-2 and used for increasing friction force and facilitating replacement.

The lower raking motor 7b-4 is fixedly arranged on the right side of the rear part of the lower raking mounting seat 7b-1, and a motor shaft of the lower raking motor extends leftwards and is arranged in parallel with a rotating shaft of a second synchronous belt pulley 7b-8 for lower raking. The lower raking first synchronous belt wheel 7b-7 is arranged on a motor shaft of the lower raking motor 7b-4 in a transmission mode, and the lower raking synchronous belt is arranged around the lower raking first synchronous belt wheel 7b-7 and the lower raking second synchronous belt wheel 7 b-8.

The material supporting plate 7b-10 is fixedly arranged on the left side of the lower material raking adjusting arm 7b-5 along the front-back direction. The left side of the material supporting plate 7b-10 is obliquely arranged with a height from left to right, so that the cloth can conveniently enter the upper part of the material supporting plate 7 b-10. The material guide plate 7b-11 is fixedly arranged on the front part of the lower material raking mounting seat 7b-1 and is positioned above the material supporting plate 7b-10 and the upper material raking roller mounting disc 7a-3, and the lower side of the material guide plate is obliquely arranged in a manner of being low on the left and high on the right. The right part of the guide plate 7b-11 is a sensing part 7b-112 with a lower left part and a higher right part. The front part of the material guide plate 7b-11 is provided with a material supporting part 7b-111, and the material supporting part 7b-111 is arranged in a U shape with a backward opening.

When the material pushing and discharging device works, the lower material pushing and discharging adjusting cylinder 7b-6 drives the front part of the lower material pushing and discharging adjusting arm 7b-5 to move upwards, so that the material supporting plate 7b-10 is upwards close to the lower part of the material guiding plate 7 b-11. The lower material scraping roller 7b-2 clamps the cloth on the lower side of the material guide plate 7b-11 from below. When the material needs to be raked backwards, the lower raking motor 7b-4 drives the lower raking roller mounting disc 7b-3 to rotate, so that the material is stirred backwards through the corresponding lower raking roller 7b-2 on the upper part.

Referring to fig. 1 to 9, 18, 19 and 22, the positioning assembly 7c includes a first inductive switch 7c-1 and a second inductive switch 7 c-2. The first inductive switch 7c-1 and the second inductive switch 7c-2 both adopt diffuse reflection type photoelectric switches. The first inductive switch 7c-1 is arranged on the lower front part of the auxiliary bedplate 1-21, the position of the first inductive switch in the front-back direction can be adjusted, the inductive position 7c-11 of the first inductive switch 7c-1 is positioned on the inductive part 7b-112 of the material guide plate 7b-11 and is positioned on the front side of the circular truncated cone rear end surface of the material guide part 3a-22 of the first material supporting roller 3a-2 in the front-back direction. The second inductive switch 7c-2 is arranged on the lower front part of the auxiliary bedplate 1-21 and is positioned at the right side of the first inductive switch 7c-1, the front-back position of the second inductive switch 7c-2 can be adjusted, and the inductive position 7c-21 of the second inductive switch 7c-2 is positioned on the inductive part 7b-112 of the material guide plate 7b-11 and is positioned at the back side of the circular truncated cone rear end surface of the material guide part 3a-22 of the first material supporting roller 3a-2 in the front-back direction.

Referring to fig. 1 to 6 and 14, the discharging device 8 comprises a discharging connecting frame 8-1, a discharging driving device 8-2, a clamping and positioning plate 8-3, a material overturning frame 8-4 and an anti-collision column 8-5.

The unloading connecting frame 8-1 is fixedly arranged on the right part of the lower side of the mounting bedplate 1-2 and extends forwards out of the mounting bedplate 1-2. The clamping positioning plate 8-3 is vertically and fixedly arranged on the front part of the lower side of the mounting bedplate 1-2 along the left-right direction. The discharging driving device 8-2 comprises a discharging cylinder 8-21 and a rotating seat 8-22. The rotary seat 8-22 is rotatably connected with the discharging connecting frame 8-1 from the middle part thereof. The discharging cylinder 8-21 is hinged on the discharging connecting frame 8-1 by the cylinder body, the piston rod thereof extends forwards and is rotationally connected on the lower end of the rotating seat 8-22 through a corresponding joint bearing. The material turning frame 8-4 is in an inverted L shape. The lower end of the right vertical rod part of the material turning frame 8-4 is fixedly arranged in the upper part of the rotating seat 8-22. Thereby driving the upper cross rod part of the material overturning frame 8-4 to swing back and forth through the discharging air cylinder 8-21. The anti-collision columns 8-5 are rubber studs. The anti-collision column 8-5 is fixedly screwed on the lower part of the front part of the discharging connecting frame 8-1 and is positioned on the front part of the lower end of the rotating seat 8-22, and when the lower end of the rotating seat 8-22 rotates forwards, the anti-collision column buffers and dampens shock.

Referring to fig. 1 to 6 and 13, the material receiving device 9 comprises a material receiving frame 9-1, a material placing platform 9-2, a material receiving adjusting frame 9-3, a material receiving platform 9-4, a material receiving platform driving device 9-5 and a material receiving slide rail 9-6. The material placing platform 9-2 is fixedly arranged on the upper part of the material receiving frame 9-1 and is used for placing clothing and cloth to be sewn. The front part of the material receiving adjusting frame 9-3 is rotatably connected to the lower part of the front part of the material receiving frame 9-1. The lower side of the rear part of the material receiving adjusting frame 9-3 is hinged with an adjusting arm 9-31, the length of the adjusting arm 9-31 can be adjusted, the other end of the adjusting arm 9-31 is hinged to the rear part of the lower part of the material receiving frame 9-1, and the included angle between the material receiving adjusting frame 9-3 and the horizontal plane is adjusted by changing the length of the adjusting arm 9-31. The two material receiving slide rails 9-6 are provided, and the material receiving platform 9-4 is arranged on the material receiving adjusting frame 9-3 in a sliding manner along the front-back direction through the two material receiving slide rails 9-6. The material receiving platform driving device 9-5 comprises a platform driving air cylinder 9-51, the platform driving air cylinder 9-51 is fixedly arranged on the material receiving adjusting frame 9-3 along the front-back direction by a cylinder body of the platform driving air cylinder and is arranged in parallel with the material receiving sliding rail 9-6, a piston rod of the platform driving air cylinder 9-51 extends backwards and is fixedly connected with the material receiving platform 9-4, and therefore the platform driving air cylinder 9-51 drives the material receiving platform 9-4 to move back and forth on the material receiving adjusting frame 9-3.

Referring to fig. 1 to 9 and 18 to 21, the sensing assembly 10 includes a third inductive switch 10-1, a fourth inductive switch 10-2, a photo-eye sensing plate 10-3, and an opposed photo-eye 10-4.

The third inductive switch 10-1 is a diffuse reflection type photoelectric switch, the third inductive switch 10-1 is arranged on the front part of the lower side of the auxiliary bedplate 1-21, the position of the third inductive switch in the front-back direction can be adjusted, the inductive position 10-11 of the third inductive switch 10-1 is positioned on the inductive part 7b-112 of the material guide plate 7b-11 and is positioned on the front side of the circular truncated cone rear end surface of the material guide part 3a-22 of the first material supporting roller 3a-2 in the front-back direction.

The photo-eye detection plate 10-3 is fixedly arranged on the first fixed mounting base 3a-1, the front part of the photo-eye detection plate 10-3 is provided with a sensing part 10-3a, and the sensing part 10-3a is vertically arranged along the left-right direction. The sensing part 10-3a is positioned at the left of the first material supporting roller 3a-2 and behind the feeding supporting plate 5-1. The fourth inductive switch 10-2 is a diffuse reflection type photoelectric switch, the fourth inductive switch 10-2 is fixedly arranged on the first fixed mounting base 3a-1, and the sensing part of the fourth inductive switch is positioned on the rear side of the sensing part 10-3a of the photo eye detection plate 10-3 and used for judging whether the cloth curling is finished. Two photoeye of the opposite photoeye 10-4 are fixedly arranged on the first fixed mounting seat 3a-1 and are respectively positioned at the upper side and the lower side of a photoeye hole 5-11 of the feeding supporting plate 5-1. The opposite light eyes 10-4 are used for judging the thickness change of the cloth passing through the light eye holes 5-11, so as to judge whether the cloth is a bone position (the cloth is sewn into a cylinder by two pieces of cloth, so that two joints are arranged in the circumferential direction, the two joints are usually inverted in the same direction along the circumferential direction when the two joints are initially sewn, so that the thickness of the joint is usually the thickness of three layers of cloth, and the joint is thicker than the single layer of cloth of the cylinder body, namely, the joint is bulged, and the joint is conventionally called as the bone position in the industry).

The utility model discloses a working method of drum roll lower hem machine has following step:

firstly, in an initial state, the first press roller 3a-4 is in a state of being far away from the first material supporting roller 3a-2 and waiting for material release; a second material supporting roller 3b-2 of the movable material supporting assembly 3b is positioned at the right part and is close to the sewing machine head 2; the second press roller 3b-8 is in an upward-lifted state to be placed with cloth; the front part of the upper material raking adjusting arm 7a-5 is in an upward-lifted state for placing cloth; the front part of the lower material raking adjusting arm 7b-5 is in a downward state for placing the cloth. The piston rod of the discharging cylinder 8-21 of the discharging driving device 8-2 is in an extending state, so that the upper cross rod part of the material turning frame 8-4 is backwards close to the workbench plate 1-2. The backstitch of the backstitch assembly 6 drives a piston rod of the air cylinder 6-4 to extend forwards, so that a horizontal backstitch part 6-1a of the backstitch plate 6-1 is far away from a sewing table of the sewing machine head 2 forwards.

And secondly, sleeving the cylindrical clothing fabric on the first material supporting roller 3a-2 and the second material supporting roller 3b-2 (when the fabric is customarily sleeved, a worker grasps two bone positions to sleeve the equipment, wherein the two bone positions are respectively positioned at the first material supporting roller 3a-2 and the second material supporting roller 3 b-2), and meanwhile, sleeving the corresponding parts of the material pressing plate 4-1, the material feeding supporting plate 5-1, the material guide plate 7b-11 and the sewing machine head 2. The left rear end of the cloth is made to lean against the front side of a second fixed mounting seat 3b-1, the middle rear end of the cloth is made to lean against the front side of a positioning backup plate 5-21 of a width adjusting assembly 5-2, the right rear end of the cloth is put on a material guide part 3a-22 of a first material supporting roller 3a-2, and an induction part 10-3a of a photo eye 10-3 is shielded, at the moment, the fourth induction switch 10-2 cannot detect the induction part 10-3a, the cloth is judged to be well sleeved by a worker, the equipment is in a standby working state, and the equipment can work, at the moment, whether burrs at the rear end of the cloth before curling are in a detection range is detected by a third induction switch 10-1 of the detection assembly 10, and a signal is given to control an upper material raking mechanism 7a and a lower material raking mechanism 7b to work. The front part of the cloth droops and is positioned at the front side of the upper part of the material turnover frame 8-4 and the front side of the clamping positioning plate 8-3.

And thirdly, after the worker sleeves the cloth, the starting device drives the second material supporting roller 3b-2 to move leftwards by the first driving motor 3c-2, so that the cloth is supported to be in a tensioned cylindrical shape. The second pressing roller driving cylinder 3b-10 drives the second pressing roller 3b-8 to downwards clamp the corresponding part of the cloth with the second material supporting roller 3 b-2; the pressing roller driving cylinder 3a-5 drives the first pressing roller 3a-4 to be close to the first material supporting roller 3a-2 and clamp the corresponding part of the cloth with the first material supporting roller 3 a-2; the upper material-raking adjusting cylinder 7a-6 drives the front part of the upper material-raking adjusting arm 7a-5 to descend, so that the corresponding upper material-raking roller 7a-2 on the upper material-raking roller mounting disc 7a-3 presses the cloth on the feeding supporting plate 5-1 from the upper part; the lower material raking adjusting cylinder 7b-6 drives the front part of the lower material raking adjusting arm 7b-5 to move upwards, so that the corresponding lower material raking roller 7b-2 on the lower material raking roller mounting disc 7b-3 presses the cloth on the lower side of the material guide plate 7b-11 from the lower part.

And fourthly, a pressure plate driving cylinder 4-3 of the tension detection assembly 4 drives the right part of a pressure plate swing arm 4-2 to drive the pressure plate 4-1 to press on the cloth, meanwhile, a first detection baffle 4-5 moves downwards, and when the first detection light eye 4-4 cannot detect the first detection baffle 4-5, the cloth tension is proper, and sewing can be performed. When the first detection photoeye 4-4 can still detect the first detection baffle 4-5, the cloth is tight, the first driving motor 3c-2 drives the movable material supporting mechanism 3b to move rightwards along the first linear guide rail 3c-6, and the cloth is loosened.

And fifthly, the first roller driving motor 3a-3 drives the first material supporting roller 3a-2 to rotate, and the second roller driving motor 3b-3 drives the second material supporting roller 3b-2 to rotate, so that the cloth rotates. Referring to fig. 22, a is the position of the burr at the rear end of the cloth, and b is the position of the terminal end after the curling, namely the plane where the front end surface of the positioning backup plate 5-21 is located. After feeding is started, when the third inductive switch 10-1 of the detection assembly 10 detects that burrs at the rear end of the cloth are on the left side of the position a, the upper scraping roller mounting disc 7a-3 of the upper scraping mechanism 7a rotates anticlockwise (described by the position shown in fig. 22) to scrape the cloth backwards (to the right in fig. 22), and the lower scraping roller mounting disc 7b-3 of the lower scraping mechanism 7b rotates clockwise (described by the position shown in fig. 22) to scrape the cloth backwards (to the right in fig. 22); when the third inductive switch 10-1 of the detection assembly 10 detects that the burr at the rear end of the cloth is on the right side of the position a, the upper scraping roller mounting disk 7a-3 of the upper scraping mechanism 7a rotates clockwise (described by the position shown in fig. 22) to scrape the cloth forward (on the left side shown in fig. 22), and the lower scraping roller mounting disk 7b-3 of the lower scraping mechanism 7b rotates counterclockwise (described by the position shown in fig. 22) to scrape the burr forward (on the right side shown in fig. 22) to make the burr of the cloth substantially on the position a. In the process that the rear end of the cloth moves towards the sewing machine head 2 from the first material supporting roller 3a-2, air is blown from the air outlet 5-51 at the lower side of the left part of the third air pipe 5-5 in advance to the lower part, so that the part to be turned over, which is drooped at the rear end of the cloth, forwards turns over, and when the part enters the space between the sewing machine head 2 and the second auxiliary presser foot 5-23, the cloth is turned over and turned over forwards and inwards.

Sixthly, in the rotating process of the cloth, when the opposite light eye 10-4 detects that the bone position passes for the first time, setting corresponding first rotation delay time T1 according to the rotation speed of the cloth, after the first delay time T1, rotating the joint of the bone position detected for the first time to the left side of the horizontal back-stitching part 6-1a of the back-stitching plate 6-1, and then stopping the rotation of the cloth; the backstitch of the backstitch assembly 6 drives a piston rod of the air cylinder 6-4 to retract backwards, so that a horizontal backstitch part 6-1a of the backstitch plate 6-1 extends backwards to the right of a joint of a bone position. The cloth is then reversed and the joint is blocked by the horizontal backstitch 6-1a, thereby changing the original direction, so that the two joints are maintained in the circumferentially opposite directions. After the backstitch is finished, the backstitch of the backstitch assembly 6 drives a piston rod of the air cylinder 6-4 to extend forwards, so that a horizontal backstitch part 6-1a of the backstitch plate 6-1 is far away from a sewing table of the sewing machine head 2 forwards, the joint is not affected at the moment, and the sewing can be started. Meanwhile, a part of cloth on the left side of the bone position is curled but is not sewn.

Seventhly, after sewing is started, when the tail end of the cloth which is curled but not sewn reaches the detection range of the third inductive switch 10-1 of the detection assembly 10, the third inductive switch 10-1 of the detection assembly 10 detects whether the tail end of the curled cloth is in the detection range or not and gives a signal to control the upper material raking mechanism 7a and the lower material raking mechanism 7b to work. When the position reaches the front of the fourth inductive switch 10-2, no cloth covers the inductive part 10-3a of the photoeye detecting plate 10-3, at the moment, the third inductive switch 10-1 of the detecting component 10 stops controlling the upper material-raking mechanism 7a and the lower material-raking mechanism 7b to work, the first inductive switch 7c-1 and the second inductive switch 7c-2 of the positioning component 7c give out signals to control the upper material-raking mechanism 7a and the lower material-raking mechanism 7b to work, so that the tail end of the curled cloth is corrected from the position a to the position b and is kept at the position b, and the width of stitches of the sewn cloth which is curled is consistent.

Eighthly, when the eyes 10-4 detect the bone position passing for the third time (the bone position is the bone position detected for the first time after the back stitching), setting corresponding second rotation delay time T2 according to the rotation speed of the cloth, and ending the stitching after the second delay time T2.

Ninth, after sewing is finished, the platform driving cylinder 9-51 drives the material receiving platform 9-4 to move backwards, and the corresponding part of the cloth is clamped and fixed on the clamping and positioning plate 8-3; then the first pressing roller 3a-4 is far away from the first material supporting roller 3a-2 to reset; the second press roller 3b-8 is lifted upwards for resetting; a pressure plate driving cylinder 4-3 of the tension detection assembly 4 drives the right part of a pressure plate swing arm 4-2 to upwards drive a pressure plate 4-1 to upwards reset; the front part of the upper material raking adjusting arm 7a-5 is lifted upwards for resetting; the front part of the lower material raking adjusting arm 7b-5 descends downwards to reset. The second material supporting roller 3b-2 of the movable material supporting component 3b resets rightwards and is close to the sewing machine head 2. The discharging cylinder 8-21 drives the upper part of the material turning frame 8-4 to move forwards, so that the upper part of the material is fallen on the material receiving platform 9-4, and then the platform driving cylinder 9-51 drives the material receiving platform 9-4 to move forwards to complete material receiving; the discharging air cylinder 8-21 drives the upper part of the material overturning frame 8-4 to move backwards and reset.

The above-mentioned embodiments further describe in detail the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, the working method of the drum rolling and swinging machine provided by the present embodiment is only a specific description of the operation of the present apparatus, and the present apparatus can be adjusted and controlled by different control methods, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A cylinder roll lower hem machine comprises a working table mechanism and a sewing machine head; the working table mechanism comprises an installation table plate, and the sewing machine head is fixedly arranged on the installation table plate; the method is characterized in that: the automatic material pushing and collecting device also comprises a material supporting mechanism, a crimping assembly, a material pushing mechanism, a discharging device and a material collecting device; the material supporting mechanism is arranged on the front part of the mounting table plate of the working table mechanism in the left-right direction and is used for supporting the cloth to be sewn into a cylindrical shape and feeding the cloth around the sewing machine head; the hemming assembly is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the hemming assembly is used for turning the rear end of the cloth inwards and forwards; the material raking mechanism is arranged on the right part of the front part of the mounting table plate and is positioned in the right feeding direction of the sewing machine head, and the material raking mechanism is used for adjusting the position of the rear end of the cloth; the discharging device is fixedly arranged on the front part of the mounting bedplate of the worktable mechanism and is used for taking down the cloth from the supporting mechanism; the material receiving device is arranged in front of the workbench and used for receiving the cloth finished by the hemming sewing and taken down by the material discharging device from the material supporting mechanism.

2. The cylindrical reel downswing machine of claim 1, wherein: the crimping assembly comprises a feeding supporting plate, a width adjusting assembly and a third air pipe; the feeding supporting plate is horizontally and fixedly arranged on the mounting table plate of the working table mechanism and is positioned on the right side of the sewing machine head; the width adjusting assembly comprises a positioning backup plate, a first auxiliary presser foot and a second auxiliary presser foot; the positioning backup plate is fixedly arranged on a sewing table surface at the lower part of the sewing machine head, is positioned behind the machine needle, and can adjust the distance from the positioning backup plate to the front and back direction of the machine needle; the first auxiliary presser foot and the second auxiliary presser foot are fixedly arranged on the positioning backup plate from left to right in sequence; the third air pipe is arranged above the rear side of the feeding supporting plate, and the left part of the third air pipe is forward and the right part of the third air pipe is backward inclined in the horizontal direction; and a row of air outlet holes are formed in the lower side of the left part of the third air pipe along the axial direction of the third air pipe, and each air outlet hole is arranged along the radial direction of the third air pipe and blows air towards the front lower part to enable the part to be curled of the cloth to be turned over forwards.

3. The cylindrical reel downswing machine of claim 1, wherein: the material supporting mechanism comprises a fixed material supporting component, a movable material supporting component and a first driving component; the fixed material supporting assembly is arranged on the right part of the front part of the mounting table plate of the working table mechanism and is positioned on the right side of the sewing machine head; the fixed material supporting assembly comprises a first material supporting roller and a first roller driving motor, and the first roller driving motor drives the first material supporting roller to rotate; the movable material supporting component comprises a second material supporting roller and a second roller driving motor; a second roller driving motor drives a second material supporting roller to rotate; the first driving assembly drives the movable material supporting assembly to move left and right, and the movable material supporting assembly is matched with the fixed material supporting assembly to support the cloth into a cylindrical shape for rotary feeding.

4. The cylindrical reel downswing machine of claim 3, wherein: the fixed material supporting assembly further comprises a first fixed mounting seat, a first roller driving shaft, a first pressing roller and a pressing roller driving cylinder; an auxiliary bedplate is fixedly arranged on the right part of the upper side of the installation bedplate of the worktable mechanism; the first fixed mounting seat is fixedly arranged on the auxiliary bedplate; the first roller driving shaft is arranged on the left side of the first fixed mounting seat in a front-back rotating manner; the first material supporting roller is coaxially and fixedly arranged on the front part of the first roller driving shaft; the first roller driving motor is fixedly arranged on the rear part of the first fixed mounting seat through a motor shell, and a motor shaft of the first roller driving motor is in transmission connection with the rear end of the first roller driving shaft through a coupling, so that the first roller driving motor drives the first material supporting roller to rotate; the rear part of the first material supporting roller is provided with a material guiding part which is in a circular truncated cone shape with a large front part and a small back part; the compression roller driving cylinder is fixedly arranged on the first fixed mounting seat through a cylinder body, and a piston rod of the compression roller driving cylinder extends towards the lower left; the first compression roller is rotatably arranged on the end of a piston rod of the compression roller driving cylinder through a corresponding mounting seat, and the compression roller driving cylinder drives the first compression roller to be close to or far away from the first material supporting roller;

the movable material supporting assembly further comprises a second fixed mounting seat, a second driven shaft, a movable material supporting motor synchronous belt wheel, a movable material supporting second synchronous belt wheel, a movable material supporting synchronous belt, a second pressing roller mounting plate and a second pressing roller driving cylinder;

the second roller driving motor is fixedly arranged on the left part of the rear side of the second fixed mounting seat through a motor shell, a motor shaft of the second roller driving motor extends forwards, and a synchronous belt pulley of the moving material supporting motor is arranged on the motor shaft of the second roller driving motor in a transmission way; the second driven shaft is arranged on the right part of the second fixed mounting seat in a forward and backward rotating manner; the second material supporting roller is fixedly sleeved on the front part of the second driven shaft; the second synchronous belt pulley for moving and supporting materials is arranged at the rear end of a second driven shaft in a transmission way; the movable material supporting synchronous belt is arranged around a synchronous belt wheel of a movable material supporting motor and a second synchronous belt wheel of a movable material supporting, so that a second roller driving motor drives a second material supporting roller to rotate; the second compression roller is rotatably arranged on the front side of the right part of the second compression roller mounting plate in the front-back direction and is positioned above the second material supporting roller; the second press roll mounting plate is rotatably connected to the right part of the upper part of the second fixed mounting seat from the middle part of the lower part of the second press roll mounting plate; the second compression roller driving cylinder is hinged to the left portion of the upper portion of the second fixed mounting seat through a cylinder body, a piston rod of the second compression roller driving cylinder extends rightwards and is connected to the left portion of the second compression roller mounting plate through a joint bearing, and therefore the second compression roller driving cylinder drives the second compression roller to lift up or press down.

5. The cylindrical reel downswing machine of claim 4, wherein: the first driving assembly comprises a third fixed mounting seat, a first driving motor, a motor shaft synchronous pulley, a second synchronous pulley, a first synchronous belt and a first linear guide rail; the third fixed mounting seat is fixedly arranged on the left part of the front part of the mounting bedplate; the first driving motor is fixedly arranged on the left part of the third fixed mounting seat through a motor shell, a motor shaft of the first driving motor extends forwards, a synchronous belt pulley of the motor shaft is arranged on the motor shaft in a transmission way, the second synchronous belt pulley is arranged on the right part of the third fixed mounting seat in a rotating way, and the rotating axis of the second driving motor is parallel to the axis of the motor shaft of the first driving motor; the first synchronous belt is arranged around the motor shaft synchronous belt wheel and the second synchronous belt wheel; the first linear guide rail is fixedly arranged on the front part of the third fixed mounting seat along the left-right direction; a second fixed mounting seat of the movable material supporting mechanism is fixedly arranged on a sliding block of the first linear guide rail; the sliding block of the first linear guide rail is fixedly connected with the first synchronous belt through the corresponding synchronous belt clamp, so that the first driving motor drives the moving and supporting mechanism to move left and right along the first linear guide rail.

6. The cylindrical reel downswing machine of claim 4, wherein: the tension detection assembly is also included; the tension detection assembly comprises a pressure plate, a pressure plate swing arm, a pressure plate driving cylinder, a first detection light eye and a first detection baffle; the swing arm of the pressure plate is rotatably connected to the lower part of the second fixed mounting seat from the middle part of the swing arm of the pressure plate; the material pressing plate is horizontally and fixedly arranged on the front side of the right end of the material pressing plate swing arm in the front-back direction and is positioned on the right side of the second material supporting roller; the front part of the material pressing plate is provided with an anti-misoperation sleeve part, the anti-misoperation sleeve part is erected upwards, and the highest part of the upper part is higher than the lowest part of the lower part of the second material supporting roller; the pressure plate driving cylinder is hinged to the left end of the lower part of the second fixed mounting seat through a cylinder body, a piston rod of the pressure plate driving cylinder extends rightwards and is rotatably connected to the left part of the pressure plate swing arm through a corresponding joint bearing; thereby the pressure plate drives the cylinder to press or lift the pressure plate through the pressure plate swing arm;

the first detection light eye is fixedly arranged on the right part of the rear side of the second fixed mounting seat, and the first detection baffle is fixedly arranged on the right part of the pressure plate swing arm and matched with the first detection light eye.

7. The cylindrical reel downswing machine of claim 1, wherein: the material supporting mechanism further comprises an auxiliary material pressing component; the auxiliary material pressing assembly comprises a lower tug, an upper pressing wheel driving cylinder and a lower tug mounting seat; the lower tug mounting seat is fixedly arranged on the lower part of the front part of the left side of the sewing machine head and is positioned on the left side of the needle; the lower tug is rotatably arranged on the lower tug mounting seat, and the rotating axis of the lower tug is horizontally arranged along the front-back direction; the upper pressing wheel driving cylinder is fixedly arranged on the upper part of the front part of the left side of the sewing machine head from the cylinder body of the upper pressing wheel driving cylinder in the vertical direction, a piston rod of the upper pressing wheel driving cylinder extends downwards, a pressing wheel seat is hinged to the end head of the piston rod, and a hinged shaft is horizontally arranged in the vertical direction; the upper pinch roller is rotatably arranged on the pinch roller seat, and the rotating axis of the upper pinch roller is parallel to the hinge axis.

8. The cylindrical reel downswing machine of claim 1, wherein: the backstitch assembly is also included; the backstitch assembly comprises a backstitch plate, a backstitch mounting seat, a backstitch connecting plate, a backstitch driving cylinder and a locking device; the upper part of the back-stitching plate is provided with a horizontal back-stitching part along the front-back direction; the front part of the inverted-L-shaped connecting part is arranged on the front part of the inverted-seam plate; the right side of the front part of the connecting part is provided with a mounting part; the backstitch plate is fixedly arranged on the upper part of the backstitch connecting plate through a connecting part of the backstitch plate; the horizontal backstitch part of the backstitch plate is positioned on the upper side of the lower sewing table of the sewing machine head; the backstitch connecting plate is rotatably connected to the backstitch mounting seat from the lower part of the left side of the backstitch connecting plate; the backstitch driving cylinder is fixedly arranged on the lower part of the front part of the left side of the sewing machine head by a cylinder body; the backstitch mounting seat is fixedly arranged on a piston rod of the backstitch driving cylinder, and the backstitch driving cylinder drives the backstitch plate to move back and forth; the locking device is used for locking the backstitch connecting plate to prevent the backstitch connecting plate from freely rotating, and the backstitch connecting plate can rotate after the locking is released.

9. The cylindrical reel downswing machine of claim 1, wherein: the material raking mechanism comprises a lower material raking mechanism and a positioning component;

the lower material-raking mechanism comprises a lower material-raking mounting seat, a lower material-raking roller mounting disc, a lower material-raking motor, a lower material-raking adjusting arm, a lower material-raking adjusting cylinder, a lower material-raking first synchronous belt pulley, a lower material-raking second synchronous belt pulley, a lower material-raking synchronous belt, a material supporting plate and a material guiding plate;

the lower raking mounting seat is fixedly arranged on the mounting bedplate; the lower raking adjusting arm is L-shaped and is rotatably connected to the front part of the lower raking mounting seat from the middle part of the lower raking adjusting arm; the lower raking adjusting cylinder 6 is hinged to the upper part of the rear part of the right side of the lower raking mounting seat through a cylinder body, and a piston rod of the lower raking adjusting cylinder is rotatably connected to the upper end of the rear part of the lower raking adjusting arm through a corresponding joint bearing, so that the lower raking adjusting cylinder drives the lower raking adjusting arm to rotate, and the front part of the lower raking adjusting arm is lifted or pressed down; the lower material raking roller mounting disc and the lower material raking second synchronous belt pulley are coaxially and rotatably arranged at the front end of the lower material raking adjusting arm, and the lower material raking roller mounting disc and the lower material raking second synchronous belt pulley are in transmission connection and synchronously rotate;

a plurality of lower scraping rollers are arranged on the lower scraping roller mounting disc in a rotating manner along the circumferential direction of the lower scraping roller mounting disc at equal intervals and angles; the axis of the lower scraping roller mounting disc is vertical to the plane where the axis of each lower scraping roller is located; the lower raking motor is fixedly arranged on the right side of the rear part of the lower raking mounting seat, and a motor shaft of the lower raking motor extends leftwards and is arranged in parallel with a rotating shaft of a second lower raking synchronous belt pulley; the lower material raking first synchronous belt pulley is arranged on a motor shaft of the lower material raking motor in a transmission way, and the lower material raking synchronous belt is arranged around the lower material raking first synchronous belt pulley and the lower material raking second synchronous belt pulley;

the material supporting plate is fixedly arranged on the left side of the lower material raking adjusting arm in the front-back direction; the left side of the material supporting plate is obliquely arranged in a manner that the material is low at the left side and high at the right side, so that the cloth can conveniently enter the upper part of the material supporting plate;

the material guide plate is fixedly arranged on the front part of the lower material raking mounting seat and is positioned above the material supporting plate and the upper material raking roller mounting disc, and the lower side of the material guide plate is obliquely arranged in a manner of being lower left and higher right; the right part of the material guide plate is an induction part with a lower left part and a higher right part; the front part of the material guide plate is provided with a material supporting part which is arranged in a U shape with a backward opening;

the positioning assembly comprises a first inductive switch and a second inductive switch; the first induction switch is arranged on the front part of the lower side of the mounting bedplate, the front-back position of the first induction switch can be adjusted, and the induction position of the first induction switch is positioned on the induction part of the material guide plate; the second inductive switch is arranged on the front part of the lower side of the auxiliary bedplate and positioned on the right side of the first inductive switch, the front-back position of the second inductive switch can be adjusted, and the inductive position of the second inductive switch is positioned on the inductive part of the material guide plate.

10. The cylindrical reel downswing machine of claim 9, wherein: the material raking mechanism also comprises an upper material raking mechanism; the upper material-raking mechanism comprises an upper material-raking mounting seat, an upper material-raking roller mounting disc, an upper material-raking motor, an upper material-raking adjusting arm, an upper material-raking adjusting cylinder, an upper material-raking first synchronous belt pulley, an upper material-raking second synchronous belt pulley and an upper material-raking synchronous belt;

the upper raking adjusting arm is L-shaped and is rotationally connected to the front part of the upper raking mounting seat from the middle part of the upper raking adjusting arm; the upper raking adjusting cylinder is hinged to the upper part of the rear part of the right side of the upper raking mounting seat through a cylinder body, and a piston rod of the upper raking adjusting cylinder is rotatably connected to the upper end of the rear part of the upper raking adjusting arm through a corresponding joint bearing, so that the upper raking adjusting cylinder drives the upper raking adjusting arm to rotate, and the front part of the upper raking adjusting arm is lifted or pressed down; the upper material skimming roller mounting disc and the upper material skimming second synchronous belt pulley are coaxially and rotatably arranged at the front end of the upper material skimming adjusting arm, and the upper material skimming roller mounting disc is in transmission connection with the upper material skimming second synchronous belt pulley and synchronously rotates;

a plurality of upper scraping rollers are arranged on the upper scraping roller mounting disc in a rotating manner along the circumferential direction of the upper scraping roller mounting disc at equal intervals and angles; the axis of the upper scraping roller mounting disc is vertical to the plane where the axis of each upper scraping roller is located; the upper scraping roller mounting disc is positioned above the right part of the feeding supporting plate;

the upper raking motor is fixedly arranged on the right side of the rear part of the upper raking mounting seat, and a motor shaft of the upper raking motor extends leftwards and is arranged in parallel with a rotating shaft of the upper raking second synchronous belt pulley; the upper material-raking first synchronous belt pulley is arranged on a motor shaft of the upper material-raking motor in a transmission way, and the upper material-raking synchronous belt is arranged around the upper material-raking first synchronous belt pulley and the upper material-raking second synchronous belt pulley.

11. The cylindrical reel downswing machine of claim 9, wherein: the crimping assembly further comprises a first air pipe, a fourth air pipe, a fifth air pipe, a sixth air pipe and a seventh air pipe; the first air pipe is fixedly arranged above the feeding supporting plate, and blows air towards the feeding supporting plate below to ensure that the cloth is tightly attached to the feeding supporting plate and keeps flat; the fourth air pipe is fixedly arranged on the left side of the material guide plate, blows towards the rear and is used for unfolding the rear edge of the cloth;

the fifth air pipe is fixedly arranged on the right side of the material guide plate, blows air towards the rear and is used for unfolding the rear edge of the cloth;

the sixth air pipe is fixedly arranged on the left side of the material supporting plate, blows towards the rear, is used for supporting the rear edge of the cloth and works together with the fourth air pipe to keep the edge of the cloth flat;

the seventh air pipe is fixedly arranged on the right side of the material supporting plate, blows towards the rear, is used for supporting the rear edge of the cloth and is used for keeping the edge of the cloth flat under the combined action of the seventh air pipe and the fifth air pipe.

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