CN111206348A

CN111206348A - Automatic serger

Info

Publication number: CN111206348A
Application number: CN201910887406.9A
Authority: CN
Inventors: 陈中华
Original assignee: Changzhou Zhigu Electrical And Mechanical Technology Co ltd
Current assignee: Changzhou Zhigu Electrical And Mechanical Technology Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-29

Abstract

The invention discloses an automatic overlock machine which comprises a frame, a working platform and an overlock machine head. The work platform includes a main platen and a head platen. The key points are as follows: also comprises a material raking device. The material raking device comprises an installation seat assembly, a material raking roller, a feeding presser foot, a roller adjusting assembly and a detection assembly. The mounting seat assembly is arranged on the machine head bedplate and positioned on the right side of the overlock machine head. The roller adjusting component is arranged on the mounting seat component. The material scraping roller is rotationally arranged on the roller adjusting component, and the roller adjusting component controls the material scraping roller to lift or press down. When the material scraping roller is pressed downwards, the material is distributed to drive the material scraping roller to rotate, and the material is guided backwards by the material scraping roller. The detection assembly is used for judging whether the material scraping roller needs to be lifted or pressed down. The feeding presser foot is arranged on the mounting seat assembly, and the position of the feeding presser foot in the vertical direction can be adjusted to ensure that the feeding of cloth is in a flat state.

Description

Automatic serger

Technical Field

The invention relates to the technical field of sewing equipment, in particular to an automatic overlock machine for overlock process in garment processing.

Background

One process is called overlocking (also called overlocking) in the garment processing process. Because the materials used by terylene clothes and the like are generally synthetic fibers and have relatively hard texture, the yarns at the edge seams of the cut clothes are easy to be scattered, so the overlock is needed, and the overlock is realized by overlock using a special overlock machine to overlock the yarns in the clothes at the edge seams to prevent the yarns from scattering, and simultaneously, the overlock also plays a role of beauty. The conventional overlock machine usually comprises a frame, a working platform and an overlock machine head, and during operation, cloth needs to be manually held to feed, so that the working efficiency is too low. Some overlock machines with feeding devices have appeared at first, but the feeding devices of the overlock machines are complex in structure and not ideal in effect, and cannot achieve a good effect of feeding cloth in place.

Disclosure of Invention

The invention aims to provide an automatic serger for clothing serging, which is simple in structure and high in automation degree.

The basic technical scheme for realizing the purpose of the invention is as follows: an automatic overlock machine comprises a frame, a working platform and an overlock machine head. The work platform includes a main platen and a head platen. The main bedplate is fixedly arranged on the frame and is in a horizontal state. The left part of the main bedplate is provided with a machine head hole which penetrates through the upper part and the lower part of the main bedplate and has a backward opening. The overlock machine head is fixedly arranged on the frame and is positioned in a machine head hole of the main bedplate. The machine head bedplate is detachably and fixedly arranged in a machine head hole of the main bedplate and is matched with the overlock machine head to cover the corresponding part of the overlock machine head. The upper surface of the head platen is flush with the upper surface of the main platen. The structure is characterized in that: also comprises a material raking device. The material raking device comprises an installation seat assembly, a material raking roller, a feeding presser foot, a roller adjusting assembly and a detection assembly. The mounting seat assembly is arranged on the machine head bedplate and positioned on the right side of the overlock machine head. The roller adjusting component is arranged on the mounting seat component. The material scraping roller is rotationally arranged on the roller adjusting component, and the roller adjusting component controls the material scraping roller to lift or press down. When the material scraping roller is pressed downwards, the material is distributed to drive the material scraping roller to rotate, and the material is guided backwards by the material scraping roller. The detection assembly is used for judging whether the material scraping roller needs to be lifted or pressed down. The feeding presser foot is arranged on the mounting seat assembly, and the position of the feeding presser foot in the vertical direction can be adjusted to ensure that the feeding of cloth is in a flat state.

The technical scheme based on the basic technical scheme is as follows: the mounting seat assembly comprises a material guiding seat, a first adjusting hand wheel of the material guiding seat, a lifting seat, a driving cylinder of the lifting seat, an adjusting hand wheel of the lifting seat and a limiting screw of the lifting seat. The material guide seat is arranged on the machine head bedplate in a sliding manner along the front-back direction. The right front part of the guide seat is provided with a guide cambered surface. The first adjusting hand wheel of the guide seat is rotatably arranged on the machine head platen from the middle cylindrical part of the guide seat, the rotating axis of the first adjusting hand wheel is arranged along the front-back direction, a first screw hole which is provided with a backward opening and is matched with the front screw part of the first adjusting hand wheel of the guide seat is arranged on the guide seat, and the screw of the first adjusting hand wheel of the guide seat is screwed in the first screw hole of the guide seat, so that the guide seat moves back and forth by screwing the first adjusting hand wheel of the guide seat, and the position of the guide seat on the machine head platen in the front-back direction is changed. The lifting seat is arranged on the material guide seat in a vertically sliding mode, and the lifting seat drives the cylinder to drive the lifting seat to move vertically. The lifting seat adjusting hand wheel is rotatably arranged in the material guide seat through a lower cylindrical section, the rotating axis of the lifting seat adjusting hand wheel is arranged along the vertical direction, and a middle screw rod part of the lifting seat adjusting hand wheel is screwed on the lifting seat, so that the position of the lifting seat in the vertical direction is changed by rotating the lifting seat adjusting hand wheel. The screw rod part of the limit screw of the lifting seat penetrates through the lifting seat from top to bottom and then is screwed on the material guide seat, the lifting seat is limited from the top, and the lifting height of the lifting seat is limited.

The technical scheme based on the corresponding technical schemes is that a feeding presser foot is horizontally and fixedly arranged on the lower side of the front part of a lifting seat, a waist-shaped roller hole penetrating through the feeding presser foot is arranged on the feeding presser foot, the left part of the roller hole is forward inclined towards the back and the right part, a roller adjusting assembly comprises a roller adjusting arm and an adjusting arm driving air cylinder, the roller adjusting arm is rotatably connected and arranged on the middle part of the front part of the lifting seat by the upper end of the right part of the roller adjusting arm, a material scraping roller is rotatably arranged on the lower end of the left part of the roller adjusting arm, an included angle α between a vertically arranged surface passing through a rotating axis of the material scraping roller and a horizontally vertically arranged surface is larger than 45 degrees and smaller than 90 degrees, the left end of the roller adjusting arm is driven by the adjusting arm driving air cylinder to lift or press down, so that the material scraping roller at the left end of the roller adjusting arm lifts or presses down, and the material scraping roller downwards penetrates through the waist-shaped roller hole of the feeding presser.

The technical scheme based on the corresponding technical schemes is as follows: also comprises a bone position detection device. The bone position detection device is used for judging whether bone positions on the cloth need to pass through the feeding presser foot.

The technical scheme based on the corresponding technical schemes is as follows: the bone position detection device comprises a bone position guide block, a bone position rotating arm, a rotating arm torsional spring, a torsional spring adjusting hand wheel and a proximity switch. The torsion spring adjusting hand wheel is arranged on the mounting seat component of the raking device in a screwing way through the rear end screw rod part. The axis of which is arranged in the front-rear direction. The bone position rotating arm is rotatably arranged on the middle cylindrical section of the torsion spring adjusting hand wheel from the middle part and is positioned at the front side of the lifting seat. The rotation axis is horizontally arranged along the front-back direction. The bone position guide block is fixedly arranged at the lower end of the bone position rotating arm, the lower part of the bone position guide block is in a conical shape, and the head part of the lower end of the conical shape is in a spherical crown shape. The upper end of the bone position rotating arm is provided with a detection plate part. The rocking arm torsional spring cover is on the middle part cylinder section of torsional spring adjusting hand wheel, is located the place ahead of position of bone rocking arm, and the one end of rocking arm torsional spring sets up on the upper end of position of bone rocking arm, and the other end sets up in the handle of torsional spring adjusting hand wheel. The rotating arm torsion spring is used for enabling the upper end of the bone position rotating arm to be close to the proximity switch leftwards, and enabling the bone position guide block to be close to the machine head bedplate downwards. The proximity switch is fixedly arranged on a mounting base component of the raking device, the upper end detection plate part of the bone position rotating arm supports against the proximity switch from right to left, and the proximity switch is used for detecting whether the upper end detection plate part of the bone position rotating arm rotates rightwards or not and is far away from the proximity switch.

The technical scheme based on the corresponding technical schemes is as follows: also comprises a first auxiliary discharging device. The first auxiliary discharging device comprises a first mounting seat, a first pressure head driving cylinder, a first connecting seat, a first linear guide rail and a first pressure head material pulling cylinder. The first mounting seat is fixedly arranged on the overlock head, the front part of the first mounting seat extends forwards and is positioned in front of the overlock head. The first linear guide rail is horizontally and fixedly arranged on the first mounting base in the left-right direction and is positioned on the right side of the first pressure head material pulling cylinder body. The first connecting seat is fixedly arranged on the sliding block of the first linear guide rail. The first connecting seat is driven by the first pressure head material pulling cylinder to move left and right along the first linear guide rail. The first pressure head driving cylinder is fixedly arranged on the first connecting seat through a cylinder body, and a piston rod of the first pressure head driving cylinder extends downwards. The first pressure head is fixedly arranged on the lower end head of a piston rod of the first pressure head driving cylinder. The first pressure head is cylindrical.

The technical scheme based on the corresponding technical schemes is as follows: also comprises a second auxiliary discharging device. The second auxiliary discharging device comprises a second mounting frame, a second pressure head driving cylinder, a second connecting seat, a second linear guide rail and a second pressure head material pulling cylinder. The second mounting frame is fixedly arranged on the left part of the upper side of the main bedplate of the working platform and is positioned on the left side of the first auxiliary discharging device. The second linear guide rail is fixedly arranged on the second mounting rack along the left-right direction through the guide rail of the second linear guide rail, and the second connecting seat is fixedly arranged on the sliding block of the second linear guide rail. The second pressure head driving cylinder is fixedly arranged on the second connecting seat from the upper direction to the lower direction of the cylinder body, and a piston rod of the second pressure head driving cylinder extends downwards. The second pressure head is fixedly arranged on the lower end head of a piston rod of the second pressure head driving cylinder. The second pressure head is cylindrical. And the second connecting seat is driven by the second pressure head material pulling cylinder to move left and right along the second linear guide rail.

The technical scheme based on the corresponding technical schemes is as follows: still include material collecting device, material collecting device is used for collecting and putting the cloth of making up.

The technical scheme based on the corresponding technical schemes is as follows: the work platform also includes an adjustment deck. The drooping distance of the cloth after sewing can be adjusted by adjusting the bedplate.

The technical scheme based on the corresponding technical schemes is as follows: the front end of the adjusting bedplate is hinged with the front part of the left discharge end of the main bedplate, and the rotating shaft of the adjusting bedplate is vertical to the main bedplate; the rear part of the adjusting bedplate is provided with an arc bedplate adjusting hole which penetrates through the upper part and the lower part of the adjusting bedplate; the center of a circle of the bedplate adjusting hole is positioned on a rotating shaft at the front end of the adjusting bedplate, and the adjusting bedplate is fixedly connected with the main bedplate through a plum blossom handle and a corresponding nut; the screw rod of the plum blossom handle sequentially penetrates through the main bedplate and the bedplate adjusting hole of the adjusting bedplate from top to bottom and then is screwed on the corresponding nut positioned on the lower side of the adjusting bedplate, so that the adjusting bedplate is fixedly connected with the main bedplate after being locked.

The invention has the following beneficial effects: (1) the automatic overlock machine is simple in structure, the rear edge of the cloth to be sewn can be automatically guided and adjusted through the material taking-off device, corresponding labor is saved, workers do not need to hold the cloth with hands to feed and sew the cloth, the material is collected by the material collecting device after sewing is completed, the automation degree is high, the workers can prepare the next cloth to be sewn in the sewing process, and the production efficiency is greatly improved.

(2) The nose bedplate of the automatic overlock machine is fixed on the main bedplate by magnet adsorption, and the material raking device is arranged on the nose bedplate, so that the automatic overlock machine is convenient to disassemble and maintain.

(3) The automatic overlock machine is provided with the material scraping device which is provided with the mounting seat assembly, and the position of the positioning backup plate in the front and back direction can be adjusted through the mounting seat assembly, so that the automatic overlock machine is suitable for requirements of sewing different overlock widths. The height of the feeding presser foot can be manually adjusted through the lifting seat adjusting hand wheel, the requirements of cloth with different thicknesses are met, the cloth is in a flat state after passing through the feeding presser foot, and the sewing quality is improved. The lifting seat drives the air cylinder to automatically control the lifting of the feeding presser foot, and the smooth passing of the bone position on the cloth is ensured.

(4) The material scraping roller of the material scraping device of the automatic overlock machine is rotatably arranged at the lower end of the left part of the roller adjusting arm, and the included angle between the surface which is vertically arranged and passes through the rotating axis of the material scraping roller and the surfaces which are vertically arranged from left to right is larger than 45 degrees and smaller than 90 degrees, so that the design and adjustment of the angle can be carried out according to the sewing speed, the material scraping device can adapt to different overlock machine heads, and has strong adaptability and wide application range. When the material scraping roller descends to contact with the cloth, the cloth is pulled to the rear due to the rolling guide effect of the material scraping roller, the edge of the rear part of the cloth is kept attached to the positioning guide surface of the positioning backup plate backwards, the material scraping roller does not need additional power, the structure is simple, the material scraping speed is adaptive to the sewing speed, the use reliability is good, and the sewing quality is improved.

(5) The guide seat of the material raking device of the automatic overlock machine is provided with the guide cambered surface, when cloth passes through, the guide cambered surface is automatically guided to the front, and then the cloth enters and is attached to the positioning guide surface of the positioning backup plate, so that the consistent sewing width is ensured, and the sewing quality is improved.

(6) The working platform of the automatic overlock machine is provided with the adjusting platen, the drooping distance of the cloth can be controlled through the adjusting platen, namely the position of the pushing plate when the cloth is clamped and fixed is adjusted, the middle part of the cloth is enabled to be lapped on the material discharging rod, the cloth is enabled to be balanced, and the cloth cannot deviate to one side to cause sliding.

(7) The automatic serger is provided with the bone position detection device, the bone position detection device is simple in structure, the rotation resistance of the bone position rotating arm can be adjusted, so that the automatic serger is suitable for fabrics made of different materials, does not damage cloth, and is accurate in judgment and good in reliability. The lower part of the bone position guide block is in a conical shape, the lower end head of the cone is in a spherical crown shape, resistance between the lower end head of the cone and cloth is favorably reduced, good passing performance is achieved, the cloth is convenient to pass through, and the cloth is not easy to damage.

(8) The automatic serger is provided with the first auxiliary discharging device and the second auxiliary discharging device, can adapt to auxiliary discharging of cloth with different lengths, saves labor, greatly improves working efficiency, further improves automatic talking degree, and has strong adaptability and wide application range.

(9) The automatic overlock machine is provided with the material receiving device, and workers only need to place cloth, and do not need to manually carry out sewing and material receiving from opposite sides, so that the automation degree is further improved, and the production and processing efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of an automatic overlock machine according to 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 the main deck as viewed from the upper right front of fig. 1.

Fig. 8 is an enlarged schematic view of the raking device in fig. 1.

Fig. 9 is a left side view of fig. 8.

Fig. 10 is a right side view of fig. 8.

Fig. 11 is a top view of fig. 8.

Fig. 12 is a schematic view when viewed from the front left upper side of fig. 8.

Fig. 13 is a schematic view as viewed from the upper right front of fig. 8.

Fig. 14 is a schematic view as viewed from the upper right rear side of fig. 8.

Fig. 15 is a schematic view of the mount assembly of the raking device as viewed from the left rear lower side of fig. 8.

Fig. 16 is a schematic view of the mount assembly of the raking device as viewed from the left rear upper side of fig. 8.

Fig. 17 is a schematic view of the first auxiliary discharging device as viewed from the front left upper side of fig. 1.

Fig. 18 is a schematic view of the second auxiliary discharging device as viewed from the front left upper side of fig. 1.

Fig. 19 is a schematic view of the material collecting device as viewed from the front left upper side of fig. 1.

Fig. 20 is a schematic view of the material collecting device as viewed from the upper right front of fig. 1.

The reference numbers in the drawings are:

a frame 1, a working platform 2, a main bedplate 2-1, a nose hole 2-11, a magnet 2-12, an adjusting bedplate 2-2, a discharge bedplate 2-3, a nose bedplate 2-4, an overlock nose 3,

the material-raking device (4) is arranged,

an installation seat assembly 41, a material guide seat 41-1, a guide cambered surface 41-11, a first adjusting hand wheel 41-2 of the material guide seat, a lifting seat 41-3, a driving cylinder 41-4 of the lifting seat, an adjusting hand wheel 41-5 of the lifting seat, a limiting screw 41-6 of the lifting seat,

a material-raking roller 42, a material-feeding presser foot 43,

a roller adjustment assembly 44, a roller adjustment arm 44-1, an adjustment arm drive cylinder 44-2,

a detection assembly 45, a first photosensor 45-1, a second photosensor 45-2,

the back-up plate 46 is positioned such that,

a bone position detection device 5, a bone position guide block 5-1, a bone position rotating arm 5-2, a detection plate part 5-21, a rotating arm torsion spring 5-3, a torsion spring adjusting hand wheel 5-4, a proximity switch 5-5,

a first auxiliary discharging device 6, a first mounting seat 6-1, a first pressure head 6-2, a first pressure head driving cylinder 6-3, a first connecting seat 6-4, a first linear guide rail 6-5, a first pressure head material pulling cylinder 6-6,

a second auxiliary discharging device 7, a second mounting frame 7-1, a second pressure head 7-2, a second pressure head driving cylinder 7-3, a second connecting seat 7-4, a second linear guide rail 7-5, a second pressure head material pulling cylinder 7-6,

the device comprises a material receiving device 8, a material receiving frame 8-1, a material pushing plate 8-2, a material discharging air pipe 8-3, a material pushing plate driving device 8-4, a material pushing plate guiding mechanism 8-5 and a cylindrical guide rail 8-5 a.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The orientation of the present invention is described according to the orientation shown in fig. 1, that is, the up-down and left-right directions shown in fig. 1 are the up-down and left-right directions described, and the side facing fig. 1 is the front side and the side facing away 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 is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention or for simplifying the description, but do not indicate that a particular orientation must be present.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

(example 1)

Referring to fig. 1 to 20, the automatic overlock machine of the invention comprises a frame 1, a working platform 2, an overlock head 3, a material raking device 4, a bone position detection device 5, a first auxiliary discharge device 6, a second auxiliary discharge device 7 and a material receiving device 8.

Referring to fig. 1 to 6, the working platform 2 comprises a main bedplate 2-1, an adjusting bedplate 2-2, an emptying bedplate 2-3 and a machine head bedplate 2-4. The main bedplate 2-1 is fixedly arranged on the frame 1 and is in a horizontal state. The left part of the main bedplate 2-1 is provided with a machine head hole 2-11 which penetrates through the upper part and the lower part of the main bedplate and has a backward opening. The front end of the adjusting bedplate 2-2 is hinged with the front part of the left discharge end of the main bedplate 2-1, and the rotating shaft of the adjusting bedplate is vertical to the main bedplate 2-1. The rear part of the adjusting bedplate 2-2 is provided with an arc bedplate adjusting hole 2-21 which penetrates through the upper part and the lower part of the adjusting bedplate. The circle center of the bedplate adjusting hole 2-21 is positioned on the rotating shaft at the front end of the adjusting bedplate 2-2, and the adjusting bedplate 2-2 is fixedly connected with the main bedplate 2-1 through a plum blossom handle 2-22 and a corresponding nut. The screw rods of the plum blossom handles 2-22 sequentially penetrate through the main bedplate 2-1 and the bedplate adjusting holes 2-21 of the adjusting bedplate 2-2 from top to bottom and are screwed on corresponding nuts positioned on the lower side of the adjusting bedplate 2-2, so that the adjusting bedplate 2-2 and the main bedplate 2-1 are fixedly connected after being locked. The material placing bedplate 2-3 is fixedly arranged on the frame 1 and positioned at the right upper side of the machine head hole 2-11 of the main bedplate 2-1 and used for placing cloth to be sewn.

Referring to fig. 1 to 6, the overlock head 3 is fixedly arranged on the frame 1 and is positioned in a head hole 2-11 of the main bedplate 2-1. The machine head bedplate 2-4 is fixedly arranged in a machine head hole 2-11 of the main bedplate 2-1 through the adsorption of a magnet 2-12 arranged on the main bedplate 2-1 and is matched with the overlock machine head 3 to cover the corresponding part of the overlock machine head 3. The upper surface of the head bedplate 2-4 is level with the upper surface of the main bedplate 2-1. The overlock head 3 is directly purchased in the market, the overlock head 3 is provided with a thread cutting device, and the thread is cut by the thread cutting device after sewing.

Referring to fig. 1 to 16, the raking device 4 includes a mounting seat assembly 41, a raking roller 42, a feeding presser foot 43, a roller adjusting assembly 44, a detecting assembly 45 and a positioning backup plate 46.

The mounting seat assembly 41 comprises a material guiding seat 41-1, a first adjusting hand wheel 41-2 of the material guiding seat, a lifting seat 41-3, a driving cylinder 41-4 of the lifting seat, an adjusting hand wheel 41-5 of the lifting seat and a limiting screw 41-6 of the lifting seat. The material guide seat 41-1 is arranged on the machine head bedplate 2-4 in a sliding way along the front-back direction. The front part of the material guiding seat 41-1 is provided with a guiding cambered surface 41-11. The positioning backup plate 46 is fixedly arranged on the guide seat 41-1 and is positioned at the left side of the guide seat 41-1, the positioning guide surface of the positioning backup plate 46 is vertically arranged along the left-right direction, and the right end is connected with the left end of the guide arc surface 41-11 of the guide seat 41-1. The underside of the positioning fence 46 contacts the head platens 2-4. The first adjusting hand wheel 41-2 of the material guide seat is rotatably arranged on the machine head bedplate 2-4 from the middle cylindrical part, the rotating axis of the first adjusting hand wheel is arranged along the front and back direction, a first screw hole with a backward opening and matched with the screw part at the front part of the first adjusting hand wheel 41-2 of the material guide seat is arranged on the material guide seat 41-1, and the screw of the first adjusting hand wheel 41-2 of the material guide seat is screwed in the first screw hole of the material guide seat 41-1, so that the material guide seat 41-1 moves back and forth by rotating the first adjusting hand wheel 41-2 of the material guide seat, and the position of the machine head bedplate 2-4 of the material guide seat 41-1 in the front and back direction is changed. The lifting seat 41-3 is arranged on the material guide seat 41-1 in a vertically sliding mode, the lifting seat driving cylinder 41-4 is an SMC CQ2B12-10D thin cylinder, the lifting seat driving cylinder 41-4 is fixedly arranged in the material guide seat 41-1 through a cylinder body, a piston rod of the lifting seat driving cylinder extends upwards and is fixedly connected with the lifting seat 41-3, and therefore the lifting seat driving cylinder 41-4 drives the lifting seat 41-3 to move vertically. The lifting seat adjusting hand wheel 41-5 is rotatably arranged in the material guiding seat 41-1 through a lower cylindrical section, the rotating axis of the lifting seat adjusting hand wheel is arranged along the vertical direction, and a screw rod part in the middle of the lifting seat adjusting hand wheel 41-5 is screwed on the lifting seat 41-3, so that the position of the lifting seat 41-3 in the vertical direction is changed by rotating the lifting seat adjusting hand wheel 41-5. The screw rod part of the limit screw 41-6 of the lifting seat penetrates through the lifting seat 41-3 from top to bottom and then is screwed on the material guide seat 41-1, the lifting seat 41-3 is limited from top, and the lifting height of the lifting seat 41-3 is limited.

The feeding presser foot 43 is horizontally and fixedly arranged on the lower side of the front part of the lifting seat 41-3, and the feeding presser foot 43 is provided with a waist-shaped roller hole 43-1 penetrating through the upper part and the lower part of the feeding presser foot. The roller hole 43-1 is arranged with the left portion inclined forward to the rear and the right portion.

The roller adjusting assembly 44 comprises a roller adjusting arm 44-1 and an adjusting arm driving cylinder 44-2, the roller adjusting arm 44-1 is rotatably connected and arranged on the middle part of the front part of the lifting seat 41-3 from the upper end of the right part of the roller adjusting arm 44-1, the material scraping roller 42 is rotatably arranged on the lower end of the left part of the roller adjusting arm 44-1, an included angle α between a surface passing through the rotating axis of the material scraping roller 42 and a surface vertically arranged in the left-right direction is larger than 45 degrees and smaller than 90 degrees, in the embodiment, the included angle is 72 degrees, the adjusting arm driving cylinder 44-2 adopts a CJPS6-10 needle cylinder of SMC, the adjusting arm driving cylinder 44-2 is rotatably connected and arranged on the left part of the front part of the lifting seat 41-3 by a cylinder body, a piston rod of the adjusting arm driving cylinder 44-2 extends out towards the right direction, the end of the piston rod is hinged and connected with the middle part of the roller adjusting arm 44-1, so that the adjusting arm driving cylinder 44-2 drives the left end of the roller adjusting arm 44-1 to lift or press the left end of the presser foot roller 42 at the left end of the adjusting arm 44-1 to press or press a material scraping roller 42 to press a material round plate on a.

The detection assembly 45 includes a first photosensor 45-1 and a second photosensor 45-2. The first photosensor 45-1 and the second photosensor 45-2 both employ an ohron's E3T-SR 412M retro-reflective photosensor. The first photoelectric sensor 45-1 is fixedly arranged on the right part of the lifting seat 41-3 and is used for detecting whether the rear edge of the cloth is in a vertical plane where the positioning guide surface of the positioning backup plate 46 is located.

The second photoelectric sensor 45-2 is fixedly arranged on the left part of the lifting seat 41-3 and is used for detecting whether the feeding of the cloth is finished.

Referring to fig. 1 to 16, the bone position detecting device 5 comprises a bone position guide block 5-1, a bone position rotating arm 5-2, a rotating arm torsion spring 5-3, a torsion spring adjusting hand wheel 5-4 and a proximity switch 5-5.

The torsion spring adjusting hand wheel 5-4 is arranged on the right part of the front part of the lifting seat 4-3 of the raking device 4 in a screwing way through a screw rod part at the rear end of the torsion spring adjusting hand wheel. The axis of which is arranged in the front-rear direction. The bone position rotating arm 5-2 is rotatably arranged on the middle cylindrical section of the torsion spring adjusting hand wheel 5-4 from the middle part and is positioned at the front side of the lifting seat 4-3. The rotation axis is horizontally arranged along the front-back direction. The bone position guide block 5-1 is fixedly arranged on the lower end of the bone position rotating arm 5-2, the lower part of the bone position guide block 5-1 is in a conical shape, and the head part of the lower end of the conical shape is in a spherical crown shape. The upper end of the bone position rotating arm 5-2 is provided with a detection plate part 5-21. The rotating arm torsion spring 5-3 is sleeved on the middle cylindrical section of the torsion spring adjusting hand wheel 5-4 and is positioned in front of the bone position rotating arm 5-2, one end of the rotating arm torsion spring 5-3 is arranged on the upper end of the bone position rotating arm 5-2, and the other end is arranged in a handle of the torsion spring adjusting hand wheel 5-4. The rotating arm torsion spring 5-3 is used for enabling the upper end of the bone position rotating arm 5-2 to be close to the proximity switch 5-5 leftwards, and enabling the bone position guide block 5-1 to be close to the machine head bedplate 2-4 downwards. The adjustment of the rotation resistance of the bone position rotating arm 5-2 is realized by rotating the torsion spring adjusting hand wheel 5-4, and the rotating arm torsion spring 5-3 is still in a compressed state in the axial direction of the torsion spring adjusting hand wheel 5-4 and is used for keeping the rotating torsion spring adjusting hand wheel 5-4 at a corresponding adjusted position (namely, in a self-locking state). The proximity switch 5-5 is fixedly arranged on the right side of the lifting seat 4-3, the upper end detection plate part 5-21 of the bone position rotating arm 5-2 is abutted against the proximity switch 5-5 from right to left, and the proximity switch 5-5 is used for detecting whether the upper end detection plate part 5-21 of the bone position rotating arm 5-2 rotates rightwards to be far away from the proximity switch 5-5.

Referring to fig. 1 to 6 and 17, the first auxiliary discharging device 6 comprises a first mounting seat 6-1, a first pressure head 6-2, a first pressure head driving cylinder 6-3, a first connecting seat 6-4, a first linear guide rail 6-5 and a first pressure head pulling cylinder 6-6. The first mounting seat 6-1 is fixedly arranged on the overlock machine head 3, the front part of the first mounting seat extends forwards, and the first mounting seat is positioned in front of the overlock machine head 3. The first pressure head material pulling cylinder 6-6 is fixedly arranged on the first mounting seat 6-1 through a cylinder body, and a piston rod of the first pressure head material pulling cylinder extends out rightwards. The first linear guide rail 6-5 is horizontally and fixedly arranged on the first mounting seat 6-1 in the left-right direction by the guide rail and is positioned at the right side of the cylinder body of the first pressure head material pulling cylinder 6-6. The first connecting seat 6-4 is fixedly arranged on the sliding block of the first linear guide rail 6-5. The end of the piston rod of the first pressure head material pulling cylinder 6-6 is hinged with the first connecting seat 6-4, so that the first pressure head material pulling cylinder 6-6 drives the first connecting seat 6-4 to move left and right along the first linear guide rail 6-5. The first pressure head driving cylinder 6-3 is fixedly arranged on the first connecting seat 6-4 through a cylinder body, and a piston rod of the first pressure head driving cylinder extends downwards. The first pressure head 6-2 is fixedly arranged on the lower end head of the piston rod of the first pressure head driving cylinder 6-3. The first pressure head 6-2 is cylindrical, and the first pressure head 6-2 is made of nylon materials.

Referring to fig. 1 to 6 and 18, the second auxiliary discharging device 7 comprises a second mounting frame 7-1, a second pressure head 7-2, a second pressure head driving cylinder 7-3, a second connecting seat 7-4, a second linear guide rail 7-5 and a second pressure head material pulling cylinder 7-6. The second mounting rack 7-1 is fixedly arranged on the left part of the upper side of the main table board 2-1 of the working platform 2 and is positioned on the left of the first auxiliary discharging device 6. The second linear guide rail 7-5 is fixedly arranged on the second mounting rack 7-1 along the left-right direction through the guide rail, and the second connecting seat 7-4 is fixedly arranged on the sliding block of the second linear guide rail 7-5. The second pressure head driving cylinder 7-3 is fixedly arranged on the second connecting seat 7-4 from the cylinder body along the up-down direction, and the piston rod thereof extends downwards. The second pressure head 7-2 is fixedly arranged on the lower end head of the piston rod of the second pressure head driving cylinder 7-3. The second pressure head 7-2 is cylindrical, and the second pressure head 7-2 is made of nylon materials. The second pressure head material pulling cylinder 7-6 adopts a CY3B10-250 rodless cylinder of SMC, and the second connecting seat 7-4 is fixedly connected with a sliding block of the second pressure head material pulling cylinder 7-6, so that the second connecting seat 7-4 is driven by the second pressure head material pulling cylinder 7-6 to move left and right along the second linear guide rail 7-5.

Referring to fig. 1 to 6, 19 and 20, the material receiving device 8 comprises a material receiving frame 8-1, a material pushing plate 8-2, a material discharging air pipe 8-3, a material pushing plate driving device 8-4 and a material pushing plate guiding mechanism 8-5. Two groups of material pushing plate guide mechanisms 8-5 are provided, and the two groups of material pushing plate guide mechanisms 8-5 have the same structure and respectively comprise a cylindrical guide rail 8-5a and a linear bearing. The material receiving frame 8-1 is fixedly arranged on the left part of the machine frame 1, and the height of the material receiving frame can be adjusted. The middle part of the material receiving frame 8-1 is provided with a material discharging rod 8-11 along the front-back direction. The material pushing plate driving device 8-4 adopts a cylinder driving mode, and the cylinder of the embodiment adopts a CDM2B20-200 cylinder of SMC. The air cylinder of the material pushing plate driving device 8-4 is horizontally and fixedly arranged on the material receiving frame 8-1 along the left-right direction by the cylinder body, and the piston rod of the air cylinder extends out leftwards. Two groups of material pushing plate guide mechanisms 8-5 are respectively arranged on the front side and the rear side of the material pushing plate driving device 8-4. The linear bearing of the material pushing plate guide mechanism 8-5 is fixedly arranged on the material receiving frame 8-1 along the left-right direction by the axis of the linear bearing, and the cylindrical guide rail 8-5a is arranged in the linear bearing in a sliding manner. The right ends of the cylindrical guide rails 8-5a of the two groups of material pushing plate guide mechanisms 8-5 are fixedly connected through corresponding connecting plates. The material pushing plate 8-2 is vertically arranged along the front-back direction. The material pushing plate 8-2 is fixedly connected with a piston rod of a cylinder of the material pushing plate driving device 8-4, and the material pushing plate 8-2 is fixedly connected with the left ends of cylindrical guide rails 8-5a of the two groups of material pushing plate guide mechanisms 8-5, so that the cylinder of the material pushing plate driving device 8-4 drives the material pushing plate 8-2 to move left and right along the two groups of material pushing plate guide mechanisms 8-5. The discharging air pipe 8-3 is fixedly arranged above the material pushing plate 8-2 along the front-back direction. The discharging air pipe 8-3 is provided with a group of air blowing holes 8-31 with left openings along the axis, and each air blowing hole 8-31 is arranged along the radial direction of the discharging air pipe 8-3 and penetrates through the inner and outer walls of the left side pipe wall of the discharging air pipe 8-3.

When the automatic serger works, the automatic serger comprises the following steps: longer cloth to be sewn is placed on the main bedplate 2-1, the front end of the cloth in the feeding direction (namely the left end of the cloth) is positioned below the second photoelectric sensor 45-2, the second photoelectric sensor 45-2 can detect the cloth below, and the equipment is in a starting working state. The corresponding part of the front and rear parts of the cloth is attached to the positioning guide surface of the positioning backup plate 46, and at this time, the first photoelectric sensor 45-1 can detect the cloth below. Then the machine is started, and the cloth enters the overlock machine head 3 to be overlock-sewn. In the sewing process: 1. when the first photoelectric sensor 45-1 cannot detect the lower cloth (that is, the rear edge of the cloth is in front of the vertical plane where the positioning guide surface of the positioning backup plate 46 is located, but not in the vertical plane), the roller adjusting assembly 44 drives the scraping roller 42 to press the cloth downwards onto the machine head bedplate 2-4, at this time, the cloth continues to move leftwards for sewing, and due to the rolling guide effect of the scraping roller 42, the cloth is pulled backwards, and the rear edge of the cloth moves backwards and keeps attached to the positioning guide surface of the positioning backup plate 46. When the first photoelectric sensor 45-1 detects that the lower part has cloth, the roller adjusting assembly 44 drives the material scraping roller 42 to lift upwards, the cloth does not affect and moves leftwards to be sewn, the excessive part is guided to the front by the guide arc surface 41-11 of the material guide seat 41-1, and the rear edge of the cloth moves forwards and is kept attached to the positioning guide surface of the positioning backup plate 46. 2. When a bone position (some cloth is formed by splicing and sewing two pieces of cloth, the joint of the joint usually has three or more layers of cloth thickness, and the joint is conventionally called as the bone position in the industry), passes through the bone position guide block 5-1 of the bone position detection device 5, the bone position guide block 5-1 is lifted upwards and leftwards due to the increase of the cloth thickness, so that the detection plate part 5-21 on the bone position rotating arm 5-2 moves towards the right far away from the proximity switch 5-5, and the proximity switch 5-5 cannot detect the detection plate part 5-21 of the bone position rotating arm 5-2, so that the bone position is judged to pass through, and at the moment, the lifting seat driving cylinder 41-4 drives the lifting seat 41-3 to move upwards, so that the feeding presser foot 43 is driven to lift upwards, and the bone position is convenient to pass through. 3. When the second photoelectric sensor 45-2 cannot detect the lower cloth, the first pressure head 6-2 of the first auxiliary discharging device 6 presses the cloth downwards and moves leftwards synchronously with the cloth; at this time, according to the position of the needle from the second photoelectric sensor 45-2 to the overlock head 3 and the sewing speed, the sewing is stopped after a corresponding time (namely, the sewing is finished), and then the thread is cut by a thread cutting device carried by the overlock head 3. When the sewing is finished, the left end of the cloth is positioned between the discharging rod 8-11 and the material pushing plate 8-2 of the material receiving frame 8-1, the material pushing plate driving device 8-4 drives the material pushing plate 8-2 to leftwards clamp and fix the cloth on the discharging rod 8-11, then the first pressure head 6-2 of the first auxiliary discharging device 6 is upwards lifted to loosen the cloth, the discharging air pipe 8-3 blows leftwards, so that the upper part of the cloth bypasses the discharging rod 8-11 and then is lapped on the discharging rod 8-11 to complete material receiving. 4. When the sewed cloth is short, the first auxiliary discharging device 6 feeds the cloth. Then the second pressure head 7-2 of the second auxiliary discharging device 7 presses the cloth downwards, the first pressure head 6-2 of the first auxiliary discharging device 6 lifts upwards to loosen the cloth, the second auxiliary discharging device 7 sends the left end of the cloth to a position between the discharging rod 8-11 of the material receiving frame 8-1 and the material pushing plate 8-2, the material pushing plate driving device 8-4 drives the material pushing plate 8-2 to clamp and fix the cloth on the discharging rod 8-11 leftwards, then the second pressure head 7-2 of the second auxiliary discharging device 7 lifts upwards to loosen the cloth, and the discharging air pipe 8-3 blows leftwards, so that the upper part of the cloth winds around the discharging rod 8-11 and is then put on the discharging rod 8-11 to complete the process.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic overlock machine comprises a frame, a working platform and an overlock machine head; the working platform comprises a main bedplate and a machine head bedplate; the main bedplate is fixedly arranged on the frame and is in a horizontal state; the left part of the main bedplate is provided with a machine head hole which penetrates through the upper part and the lower part of the main bedplate and has a backward opening; the overlock machine head is fixedly arranged on the frame and positioned in a machine head hole of the main bedplate; the machine head bedplate is detachably and fixedly arranged in a machine head hole of the main bedplate and is matched with the overlock machine head to cover the corresponding part of the overlock machine head; the upper surface of the machine head bedplate is level with the upper surface of the main bedplate; the method is characterized in that: the device also comprises a material raking device; the material raking device comprises a mounting seat assembly, a material raking roller, a feeding presser foot, a roller adjusting assembly and a detection assembly; the mounting seat assembly is arranged on the machine head bedplate and positioned on the right side of the overlock machine head; the roller adjusting assembly is arranged on the mounting seat assembly; the material scraping roller is rotationally arranged on the roller adjusting assembly, and the roller adjusting assembly controls the material scraping roller to lift or press downwards; when the material scraping roller is pressed downwards, the material is distributed to drive the material scraping roller to rotate, and the material is guided backwards by the material scraping roller; the detection assembly is used for judging whether the scraping roller needs to be lifted or pressed down; the feeding presser foot is arranged on the mounting seat assembly, and the position of the feeding presser foot in the vertical direction can be adjusted to ensure that the feeding of cloth is in a flat state.

2. The automatic serger according to claim 1, characterized in that: the mounting seat assembly comprises a material guiding seat, a first adjusting hand wheel of the material guiding seat, a lifting seat, a driving cylinder of the lifting seat, an adjusting hand wheel of the lifting seat and a limiting screw of the lifting seat; the guide seat is arranged on the machine head bedplate in a sliding manner along the front-back direction; a guide cambered surface is arranged at the right front part of the guide seat; the first adjusting hand wheel of the guide seat is rotatably arranged on the machine head platen from the middle cylindrical part, the rotating axis of the first adjusting hand wheel is arranged along the front-back direction, the guide seat is provided with a first screw hole which is provided with a backward opening and is matched with the front screw part of the first adjusting hand wheel of the guide seat, and the screw of the first adjusting hand wheel of the guide seat is screwed in the first screw hole of the guide seat, so that the guide seat moves back and forth by screwing the first adjusting hand wheel of the guide seat, and the position of the guide seat on the machine head platen in the front-back direction is changed; the lifting seat is arranged on the material guide seat in a vertically sliding manner, and the lifting seat is driven by a lifting seat driving cylinder to move vertically; the lifting seat adjusting hand wheel is rotatably arranged in the material guide seat through a lower cylindrical section, the rotating axis of the lifting seat adjusting hand wheel is arranged along the vertical direction, and a screw rod part in the middle of the lifting seat adjusting hand wheel is screwed on the lifting seat, so that the position of the lifting seat in the vertical direction is changed by rotating the lifting seat adjusting hand wheel; the screw rod part of the limit screw of the lifting seat penetrates through the lifting seat from top to bottom and then is screwed on the material guide seat, the lifting seat is limited from the top, and the lifting height of the lifting seat is limited.

3. The automatic serger as claimed in claim 2, wherein the feeding presser foot is horizontally and fixedly arranged on the lower side of the front portion of the lifting seat, the feeding presser foot is provided with a waist-shaped roller hole penetrating through the feeding presser foot, the roller hole is arranged in a manner that the left portion of the roller hole is inclined forwards towards the back and the right portion of the roller hole, the roller adjusting assembly comprises a roller adjusting arm and an adjusting arm driving cylinder, the roller adjusting arm is rotatably connected to the middle of the front portion of the lifting seat from the upper end of the right portion of the roller adjusting arm, the scraping roller is rotatably arranged on the lower end of the left portion of the roller adjusting arm, an included angle α between a vertically arranged surface passing through a rotating axis of the scraping roller and a horizontally vertically arranged surface is larger than 45 degrees and smaller than 90 degrees, the left end of the roller adjusting arm is driven by the adjusting arm driving cylinder to lift or press down, so that the scraping roller at the left end of the roller adjusting arm is lifted up or down, and the scraping roller downwardly penetrates through the waist-shaped roller hole of.

4. The automatic serger according to claim 1, characterized in that: the bone position detection device is also included; the bone position detection device is used for judging whether bone positions on the cloth need to pass through the feeding presser foot.

5. The automatic serger according to claim 4, characterized in that: the bone position detection device comprises a bone position guide block, a bone position rotating arm, a rotating arm torsional spring, a torsional spring adjusting hand wheel and a proximity switch; the torsion spring adjusting hand wheel is arranged on the mounting seat component of the raking device in a screwing way through the rear end screw rod part; the axis of the device is arranged along the front-back direction; the bone position rotating arm is rotatably arranged on the middle cylindrical section of the torsion spring adjusting hand wheel from the middle part of the bone position rotating arm and is positioned on the front side of the lifting seat; the rotation axis is horizontally arranged along the front-back direction; the bone position guide block is fixedly arranged on the lower end of the bone position rotating arm, the lower part of the bone position guide block is in a conical shape, and the head part of the lower end of the conical shape is in a spherical crown shape; the upper end of the bone position rotating arm is provided with a detection plate part; the rotating arm torsion spring is sleeved on the middle cylindrical section of the torsion spring adjusting hand wheel and positioned in front of the bone position rotating arm, one end of the rotating arm torsion spring is arranged on the upper end of the bone position rotating arm, and the other end of the rotating arm torsion spring is arranged in a handle of the torsion spring adjusting hand wheel; the rotating arm torsion spring is used for enabling the upper end of the bone position rotating arm to be close to the proximity switch leftwards and enabling the bone position guide block to be close to the machine head bedplate downwards; the proximity switch is fixedly arranged on a mounting base component of the raking device, the upper end detection plate part of the bone position rotating arm supports against the proximity switch from right to left, and the proximity switch is used for detecting whether the upper end detection plate part of the bone position rotating arm rotates rightwards or not and is far away from the proximity switch.

6. The automatic serger according to one of claims 1 to 5, characterized in that: the device also comprises a first auxiliary discharging device; the first auxiliary discharging device comprises a first mounting seat, a first pressure head driving air cylinder, a first connecting seat, a first linear guide rail and a first pressure head material pulling air cylinder; the first mounting seat is fixedly arranged on the overlock head, the front part of the first mounting seat extends forwards and is positioned in front of the overlock head; the first linear guide rail is horizontally and fixedly arranged on the first mounting base in the left-right direction and is positioned on the right side of the first pressure head material pulling cylinder body; the first connecting seat is fixedly arranged on the sliding block of the first linear guide rail; the first connecting seat is driven by a first pressure head material pulling cylinder to move left and right along a first linear guide rail; the first pressure head driving cylinder is fixedly arranged on the first connecting seat through a cylinder body, and a piston rod of the first pressure head driving cylinder extends downwards; the first pressure head is fixedly arranged on the lower end head of a piston rod of the first pressure head driving cylinder.

7. The automatic serger according to claim 6, characterized in that: the device also comprises a second auxiliary discharging device; the second auxiliary discharging device comprises a second mounting frame, a second pressure head driving cylinder, a second connecting seat, a second linear guide rail and a second pressure head material pulling cylinder; the second mounting frame is fixedly arranged on the left part of the upper side of the main bedplate of the working platform and is positioned on the left side of the first auxiliary discharging device; the second linear guide rail is fixedly arranged on the second mounting rack along the left-right direction through the guide rail of the second linear guide rail, and the second connecting seat is fixedly arranged on the sliding block of the second linear guide rail; the second pressure head driving cylinder is fixedly arranged on the second connecting seat from the cylinder body along the vertical direction, and a piston rod of the second pressure head driving cylinder extends downwards; the second pressure head is fixedly arranged on the lower end head of a piston rod of the second pressure head driving cylinder; and the second connecting seat is driven by the second pressure head material pulling cylinder to move left and right along the second linear guide rail.

8. The automatic serger according to one of claims 1 to 5, characterized in that: still include material collecting device, material collecting device is used for collecting and putting the cloth of making up.

9. The automatic serger according to one of claims 1 to 5, characterized in that: the working platform also comprises an adjusting bedplate; the drooping distance of the cloth after sewing can be adjusted by adjusting the bedplate.

10. The automatic serger according to claim 9, characterized in that: the front end of the adjusting bedplate is hinged with the front part of the left discharge end of the main bedplate, and the rotating shaft of the adjusting bedplate is vertical to the main bedplate; the rear part of the adjusting bedplate is provided with an arc bedplate adjusting hole which penetrates through the upper part and the lower part of the adjusting bedplate; the center of a circle of the bedplate adjusting hole is positioned on a rotating shaft at the front end of the adjusting bedplate, and the adjusting bedplate is fixedly connected with the main bedplate through a plum blossom handle and a corresponding nut; the screw rod of the plum blossom handle sequentially penetrates through the main bedplate and the bedplate adjusting hole of the adjusting bedplate from top to bottom and then is screwed on the corresponding nut positioned on the lower side of the adjusting bedplate, so that the adjusting bedplate is fixedly connected with the main bedplate after being locked.