CN108049033B

CN108049033B - Overedging sewing machine capable of automatically sensing broken overedging and bottom surface thread

Info

Publication number: CN108049033B
Application number: CN201810082531.8A
Authority: CN
Inventors: 叶国宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2020-09-25
Anticipated expiration: 2038-01-29
Also published as: CN108049033A

Abstract

The invention provides a hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread, and belongs to the technical field of sewing equipment manufacturing. The automatic edge-covering sewing machine solves the technical problems that an existing edge-covering sewing machine is single in function, low in automation degree and the like. The hemming sewing machine comprises a machine shell, a main shaft and a needle rod capable of reciprocating up and down, wherein the main shaft is connected with a clutch bracket through a connecting rod and can drive the clutch bracket to reciprocate up and down; the machine shell is provided with a cutter seat and a lifting seat which can move up and down, the cutter seat is fixedly connected with a material cutter through a cutter mounting frame, and the lifting seat is fixedly connected with a cutting cutter; the cutter seat is also provided with a locking rod which can connect the clutch bracket with the cutter seat; the lifting seat is provided with a movable pin capable of being inserted into the cutter seat, and the casing is provided with a driving piece for driving the movable pin to move. The edge-covering sewing machine can automatically cut off the cloth edge, the edge covering strip and the bottom line by adopting the power source of the edge-covering sewing machine, and is automatically controlled by the inductor and the controller, so that the efficiency is high.

Description

Overedging sewing machine capable of automatically sensing broken overedging and bottom surface thread

Technical Field

The invention belongs to the technical field of sewing equipment, relates to a hemming sewing machine, and particularly relates to a hemming sewing machine capable of automatically sensing broken hems and bottom surface threads.

Background

The hemming sewing machine is used for hemming the edges of flexible fabrics with certain thickness, so that the fabrics are more attractive, and the strength of the fabrics can be improved. The existing edge-covering sewing machine has the functions of automatic backstitch, automatic thread clamping, automatic thread shifting, automatic presser foot lifting and the like, and is influenced by an edge-covering tap and a funnel, so that the structure generates limitation and interference, the common edge-covering sewing machine is not provided with automatic edge-covering strip breaking, bottom surface thread cutting, cloth material cutting and the like, when the edge-covering sewing machine is used for performing edge-covering sewing on cloth, the cloth is required to be manually trimmed, after the edge-covering sewing of the sewing material is completed, the edge-covering strip and the bottom surface thread and the like are required to be manually cut off by using scissors, the process is complex, time and labor are wasted, the production automation degree is low, and the efficiency is low.

Chinese patent (publication No. CN 205077233U; published Japanese 2016-03-09) discloses a side cutter edge-covering double-needle flat-stitch sewing machine, which comprises a sewing machine head and a bottom plate, wherein a needle plate is arranged on the bottom plate, the side cutter edge-covering double-needle flat-stitch sewing machine further comprises a cutter motion separation mechanism, a rear tug mechanism and an edge-covering sewing waste material suction mechanism, the cutter motion separation mechanism and the rear tug mechanism are respectively connected with an upper shaft of the sewing machine head, and the edge-covering sewing waste material suction mechanism is arranged on the bottom plate; the cutter movement separating mechanism comprises an eccentric cam, a swinging bracket, a swinging shaft, a length adjusting connecting rod, a cutter shaft seat, a cutter clutch spring, a clutch crank bracket, a cutter clutch knob and a cutter reset wrench, the eccentric cam is sleeved on an upper shaft of a sewing machine head, the eccentric cam is connected with the swinging shaft through a swinging shaft crank I, the swinging shaft is sleeved with the swinging shaft bracket, a swinging shaft crank II is sleeved on the swinging shaft in the middle part of the swinging shaft bracket, the other end of the swinging shaft crank II is connected with one end of the length adjusting connecting rod, the other end of the length adjusting connecting rod is connected with the cutter clutch crank, the cutter clutch crank is connected with the clutch crank bracket, the clutch crank bracket is fixed on the cutter shaft seat through a screw, the cutter shaft seat is connected with the cutter seat through a cutter seat guide rod and a cutter seat rod, the cutter shaft seat is connected with the cutter clutch bracket through a cutter shaft, the opening end of the cutter clutch crank is in contact with a sliding block sleeved on the cutter clutch support, the cutter frame is connected with the cutter seat through a screw, the cutter is connected onto the cutter frame, and the cutter clutch spring is connected with the screw arranged on the cutter seat.

The cutter in the above patent document can only cut off the hemmed fabric, and has a single function and low degree of automation in the operation.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a hemming sewing machine capable of automatically sensing the broken hemming and the bottom surface thread, and the invention aims to solve the technical problems that: how to improve the versatility and the automation degree of the edge-covering sewing machine.

The purpose of the invention can be realized by the following technical scheme:

a hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread comprises a machine shell, a main shaft and a needle rod capable of reciprocating up and down, wherein a sewing needle is fixedly arranged at the lower end of the needle rod; the machine shell is fixedly provided with a vertical guide rod, the guide rod is slidably sleeved with a cutter seat, the cutter seat is fixedly connected with a cutter mounting frame, and the cutter mounting frame is fixedly connected with a vertically downward material cutter; the clutch support is also provided with a loosening rod assembly, the clutch support is provided with an insert inserted into the cutter seat, and the loosening rod assembly comprises a locking rod capable of locking the insert inserted into the cutter seat; a vertical guide post is fixedly arranged on the machine shell, a lifting seat is sleeved on the guide post, and a cutting knife facing downwards is fixedly connected to the lifting seat; the lifting seat is provided with a movable pin capable of being inserted into the cutter seat and a return spring capable of returning the movable pin, and the shell is provided with an electromagnet and a clutch plate for driving the movable pin to move; the hemming sewing machine further comprises a controller and an inductor, the controller can control the electromagnet to act, the inductor can induce the edge of the cloth, and the inductor is electrically connected with the controller.

The principle is as follows: the main shaft rotates to drive the needle rod and a sewing needle and a sewing thread at the lower end of the needle rod to do up-and-down reciprocating motion to realize sewing action, meanwhile, when the edge of the cloth needs to be cut, the clutch bracket is combined and bound with the cutter holder by pushing the locking rod, the main shaft rotates to drive the clutch bracket to do up-and-down reciprocating motion through the eccentric wheel, the connecting rod and the connecting seat, and then the cutter holder and a cutter on the cutter holder are driven to form cutting motion, so that the edge of the cloth is trimmed and cut, and the edge of the cloth; after the edging sewing is finished, the electromagnet drives the movable pin to move, so that the lifting seat is combined with the cutter seat to be bound to realize linkage, and the edging cutter on the lifting seat and the lifting seat cuts off the edging and the bottom surface thread along with the movement of the cutter seat. The edge-covering sewing machine is provided with the material cutting knife and the cutting knife respectively, the cloth edge, the edge covering strip and the bottom surface line can be automatically cut off by adopting a power source of the edge-covering sewing machine, the functions are rich, the sewing efficiency of the edge-covering sewing machine is improved, the material cutting knife and the cutting knife are controlled conveniently through a clutch switching structure, interference is avoided, and the edge-covering sewing machine has the advantages of simple structure, convenience in use, no need of manual trimming and the like. Not only designed among this technical scheme and cut off structure and separation and reunion switching structure, still set up the border of inductor auto-induction cloth to feed back to the controller, give the electro-magnet drive signal through the controller, thereby the automatic realization is cut the purpose of borduring and bottom surface line of cutting, need not the manual work and gives the cut-off signal, and cut off very accurately, degree of automation is high, convenient to use.

In the hemming sewing machine for automatically sensing to break hemming and bottom surface thread, the hemming sewing machine further comprises a bottom plate, a push plate is arranged on the bottom plate, the sensor is a proximity sensor and is fixed on the push plate; the inductor is located the below of connecting rod and sets up upwards. When the cloth and the edge covering strip move forwards through feeding after sewing, and the edge of the cloth just covers the proximity sensor, the position of the edge covering strip and the position of the cloth are automatically determined to be on the same straight line, so that the edge of the cloth and the edge covering strip are aligned, the proximity sensor feeds back signals to the controller, and the controller transmits driving signals to the electromagnet to perform shearing action.

In the hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread, a limiting block is fixedly arranged on a machine shell, a vertical slideway is arranged on the limiting block, a protruding bolt is arranged on one side of a connecting seat, a sliding block is sleeved at one end of the bolt, and the sliding block is embedded in the slideway in a sliding manner; the other side of the connecting seat is fixedly connected with the clutch bracket; the clutch support is provided with a limit shaft which is inserted in the limit sleeve in a sliding manner. The bolt can only reciprocate up and down in the slide way, and when the main shaft drives the connecting rod to do compound motion through the eccentric wheel, the bolt drives the clutch support to reciprocate up and down through limiting the freedom degrees of the connecting seat and the lower end of the connecting rod.

In the hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread, the upper ends of the guide rod and the guide post are fixedly connected with the machine shell, the lower end of the guide rod is connected with a first support screw in a threaded manner, a first spiral spring is sleeved on the guide rod, the lower end of the first spiral spring abuts against the first support screw, and the upper end of the first spiral spring abuts against the bottom surface of the cutter seat; the lower end of the guide post is in threaded connection with a second supporting screw, a second spiral spring is sleeved on the guide post, the lower end of the second spiral spring abuts against the second supporting screw, and the upper end of the second spiral spring abuts against the bottom surface of the lifting seat. The cutter seat and the cutting knife on the cutter seat are reset and driven by the first spiral spring when moving upwards; the lifting seat and the cutting-off knife on the lifting seat are reset and driven by the second spiral spring when moving upwards.

In the hemming sewing machine capable of automatically sensing to break hemming and bottom surface thread, the movable pin is transversely inserted into the lifting seat, and the cutter seat is provided with a slot which is opposite to one end of the movable pin; the clutch plate is connected to the shell through a shaft position screw, one end of the clutch plate abuts against the output end of the electromagnet, and the other end of the clutch plate abuts against the other end of the movable pin. When the controller sends a cutting signal to the electromagnet, the electromagnet core moves forwards to push the clutch plate to rotate and swing around the axial position screw, and the lower end of the clutch plate pushes the movable pin to move inwards, so that the inner end of the movable pin is clamped in the corresponding slot of the cutter seat. When the main shaft rotates to drive the clutch support to move downwards, the locking rod is manually pushed, so that the clutch support is linked with the cutter seat, and the lifting seat and the cutting cutter are driven to move downwards together to cut off the edge covering strip and the bottom surface line simultaneously.

In the hemming sewing machine capable of automatically sensing the broken hemming and the bottom surface thread, a torsional spring capable of resetting the clutch plate is sleeved on the shaft position screw; the return spring is sleeved on the movable pin. Furthermore, the two ends of the movable pin extend out of the lifting seat, a boss is arranged at one end of the movable pin close to the clutch plate, the reset spring is positioned between the boss and the lifting seat, and the two ends of the reset spring are respectively abutted against the side faces of the boss and the lifting seat. The reset of clutch plate and activity round pin drives through torsional spring and reset spring respectively among this technical scheme. After the edge covering strip is cut off, the electromagnet releases suction through an electric control signal, the clutch plate resets through the torsion spring, and the movable pin resets through the reset spring after losing the external force action of the clutch plate, so that the cutting knife can not move when the sewing edge is cut.

In the hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread, the casing is further provided with a first vertical guide rod and a second vertical guide rod respectively, the cutter seat is sleeved on the first guide rod in a sliding mode, and the lifting seat is sleeved on the second guide rod in a sliding mode. Like this can be further assurance cutter seat, lift seat, blank sword and the stability and the reliability that the cutting off cutter reciprocated.

In the hemming sewing machine capable of automatically sensing broken hemming and bottom surface thread, the end of the main shaft is provided with the crank, the crank is connected with the needle rod and can drive the needle rod to reciprocate up and down, the upper rod sleeve and the lower rod sleeve are fixedly arranged on the machine shell at an upper interval and a lower interval respectively, and the needle rod is inserted in the upper rod sleeve and the lower rod sleeve in a sliding manner. The motion of the needle bar is also driven by the main shaft, the power source is reduced, and the stability and the reliability of the sewing motion of the needle bar are kept through the limit of the upper rod sleeve and the lower rod sleeve.

In foretell auto-induction is surely bordured and in the sewing machine of borduring of bottom surface line, the casing sets up on the bottom plate, be equipped with the ware of borduring on the bottom plate, the check lock lever is along vertical setting, the blank sword is located the front side of seam needle and the right side position of deviating from the seam needle, the cutting off tool is located the rear side of seam needle. Cloth and bordure the limit and place on the bottom plate, and the effect of bordure the limit through the ware for bordure the limit and open and with cloth package in the middle of bordure, main shaft rotary motion sews it.

In the technical scheme, the axial direction of a main shaft of the hemming sewing machine is taken as the longitudinal direction, and the direction perpendicular to the axial direction of the main shaft in a horizontal plane is taken as the transverse direction; the side of the sewing machine facing the operator is taken as the front side, the opposite side is taken as the rear side, namely, the cloth moves from the front side to the rear side of the sewing machine on the bottom plate by the feed dog, the side of the sewing machine facing the machine head is taken as the left side, and the side facing the machine tail is taken as the right side.

Compared with the prior art, the edge-covering sewing machine has the following advantages:

1. the edge-covering sewing machine is provided with the material cutting knife and the cutting knife respectively, the cloth edge, the edge covering strip and the bottom surface line can be automatically cut off by adopting a power source of the edge-covering sewing machine, the functions are rich, the sewing efficiency of the edge-covering sewing machine is improved, the material cutting knife and the cutting knife are controlled conveniently through a clutch switching structure, interference is avoided, and the edge-covering sewing machine has the advantages of simple structure, convenience in use, no need of manual trimming and the like.

2. The hemming sewing machine disclosed by the invention is provided with the cutting structure and the clutch switching structure, is also provided with the sensor for automatically sensing the edge of the cloth and feeding the edge back to the controller, and drives a signal to the electromagnet through the controller, so that the purposes of hemming cutting and bottom surface thread cutting are automatically realized, the manual cutting of the cutting signal is not needed, the cutting is very accurate, the automation degree is high, and the use is convenient.

Drawings

FIG. 1 is a front view schematically showing the structure of the hemming sewing machine.

FIG. 2 is a schematic view showing the internal structure of the hemming sewing machine.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

FIG. 4 is a schematic view showing a partial perspective structure of the hemming sewing machine.

FIG. 5 is a schematic view showing a partial perspective structure of the overedging sewing machine.

FIG. 6 is a rear view schematically showing the structure of the hemming sewing machine.

FIG. 7 is a left side view schematically showing the structure of the present hemming sewing machine.

FIG. 8 is a schematic view showing the structure of the present overedging machine in the working state.

In the figure, 1, a housing; 2. a main shaft; 3. a needle bar; 4. sewing a needle; 5. an eccentric wheel; 6. a connecting rod; 7. a connecting seat; 71. a bolt; 8. a clutch bracket; 81. a plug-in; 82. a limiting shaft; 9. a guide bar; 10. a cutter seat; 11. a material cutting knife; 12. a guide post; 13. a lifting seat; 14. a cutting knife; 15. a trip lever assembly; 15a, a locking lever; 16. a movable pin; 17. an electromagnet; 18. a limiting block; 18a, a slideway; 19. a limiting sleeve; 20. a first support screw; 21. a second support screw; 22. a first spiral spring; 23. a second spiral spring; 24. an axial screw; 25. a clutch plate; 26. a torsion spring; 27. a return spring; 28. a first guide rod; 29. a second guide rod; 30. a crank; 31. a rod sleeve is arranged; 32. a lower rod sleeve; 33. a base plate; 34. a binding device; 35. a cutter mounting rack; 36. a slider; 37. an inductor; 38. pushing the plate; 39. distributing; 40. and (6) edge wrapping strips.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 8, the serging machine comprises a bottom plate 33, a machine shell 1, a main shaft 2 and a needle rod 3 capable of reciprocating up and down, wherein the machine shell 1 is arranged on the bottom plate 33, a hemmer 34 is arranged on the bottom plate 33, a sewing needle 4 is fixedly arranged at the lower end of the needle rod 3, an eccentric wheel 5 is arranged at one end of the main shaft 2, a connecting rod 6 is arranged on the eccentric wheel 5, the upper end of the connecting rod 6 is hinged with the eccentric wheel 5, a connecting seat 7 is arranged at the lower end of the connecting rod 6, a clutch bracket 8 is connected to the connecting seat 7, and the connecting rod 6; a vertical guide rod 9 is fixedly arranged on the machine shell 1, a cutter seat 10 is slidably sleeved on the guide rod 9, a cutter mounting frame 35 is fixedly connected to the cutter seat 10, and a vertical downward blanking cutter 11 is fixedly connected to the cutter mounting frame 35; the clutch bracket 8 is also provided with a loosening rod assembly 15, the clutch bracket 8 is provided with an insert 81 inserted into the cutter seat 10, the loosening rod assembly 15 comprises a locking rod 15a capable of locking the insert 81 inserted into the cutter seat 10, and the locking rod 15a is arranged along the longitudinal direction; a vertical guide post 12 is fixedly arranged on the machine shell 1, a lifting seat 13 is sleeved on the guide post 12, and a cutting knife 14 facing downwards is fixedly connected to the lifting seat 13; the cutting knife 11 is positioned at the front side of the sewing needle 4 and is deviated to the right side position of the sewing needle 4, and the cutting knife 14 is positioned at the rear side of the sewing needle 4; the lifting seat 13 is provided with a movable pin 16 and a return spring 27 which can be inserted into the cutter seat 10, and the casing 1 is provided with an electromagnet 17 and a clutch plate 25 which drive the movable pin 16 to move; the hemming sewing machine further comprises a controller capable of controlling the electromagnet 17 to act and an inductor 37 capable of inducing the edge of the cloth 39, and the inductor 37 is electrically connected with the controller; a push plate 38 is arranged on the bottom plate 33, the sensor 37 is a proximity sensor, and the sensor 37 is fixed on the push plate 38; the sensor 37 is located below the link 6 and is disposed upward. Specifically, as shown in fig. 2 and fig. 3, a limiting block 18 is fixedly arranged on the casing 1, a vertical slideway 18a is arranged on the limiting block 18, a protruding bolt 71 is arranged on one side of the connecting seat 7, a sliding block 36 is sleeved at one end of the bolt 71, and the sliding block 36 is slidably embedded in the slideway 18 a; one side of the connecting seat 7 is provided with a bolt 71 which is embedded in the slideway 18a in a sliding way, and the other side of the connecting seat 7 is fixedly connected with the clutch bracket 8; the machine shell 1 is further fixedly provided with a vertical limiting sleeve 19, the clutch support 8 is provided with a limiting shaft 82 which is slidably inserted into the limiting sleeve 19, the bolt 71 can only reciprocate up and down in the slideway 18a, and the main shaft 2 drives the connecting rod 6 to do compound motion through the eccentric wheel 5, so that the connecting seat 7 and the freedom degree of the lower end of the connecting rod 6 are limited to drive the clutch support 8 to reciprocate up and down; as shown in fig. 6 and 7, the movable pin 16 is transversely inserted into the lifting seat 13, and the cutter seat 10 is provided with a slot opposite to one end of the movable pin 16; the casing 1 is connected with the strip-shaped clutch plate 25 through a shaft position screw 24, one end of the clutch plate 25 is abutted against the output end of the electromagnet 17, and the other end is abutted against the other end of the movable pin 16. When the cloth 39 and the edge covering strip 40 move forward through feeding after sewing and the edge of the cloth 39 just covers the proximity sensor, the position of the cloth 39 and the position of the cutting knife 14 are automatically determined to be on the same straight line, which indicates that the edge of the cloth 39 is aligned with the edge of the cutting knife 14, the proximity sensor feeds back signals to the controller, the controller transmits driving signals to the electromagnet 17, the iron core of the electromagnet 17 moves forward to push the clutch plate 25 to rotate around the axial position screw 24, and the lower end of the clutch plate 25 pushes the movable pin 16 to move inward, so that the inner end of the movable pin 16 is clamped in the corresponding slot of the cutter seat 10. In the use process, the main shaft 2 rotates to drive the crank 30 to rotate so as to drive the needle rod 3 and the sewing needle 4 and the sewing thread at the lower end of the needle rod 3 to reciprocate up and down to realize sewing action, meanwhile, when the edge of the cloth needs to be cut, the locking rod 15a is pushed to enable the clutch bracket 8 to be combined and bound with the cutter seat 10, the main shaft 2 rotates to drive the clutch bracket 8 to reciprocate up and down through the eccentric wheel 5, the connecting rod 6 and the connecting seat 7, and further drive the cutter seat 10 and the cutter 11 on the cutter seat 10 to form cutting motion, so that the edge of the cloth 39 is trimmed, and the edge of the cloth 39 is smooth; after the edging strip 40 is sewn, the controller controls the electromagnet 17 to act, the movable pin 16 is driven to move, the lifting seat 13 and the cutter seat 10 are combined and bound to realize linkage, and the lifting seat 13 and the cutting knife on the lifting seat 13 move along with the cutter seat 10 to cut off the edging strip 40 and the bottom surface thread.

Further, as shown in fig. 5 and 6, the upper ends of the guide rod 9 and the guide post 12 are fixedly connected with the casing 1, the lower end of the guide rod 9 is screwed with a first support screw 20, a first coil spring 22 is sleeved on the guide rod 9, the lower end of the first coil spring 22 abuts against the first support screw 20, and the upper end of the first coil spring 22 abuts against the bottom surface of the cutter holder 10; the lower end of the guide post 12 is in threaded connection with a second support screw 21, a second spiral spring 23 is sleeved on the guide post 12, the lower end of the second spiral spring 23 abuts against the second support screw 21, and the upper end of the second spiral spring 23 abuts against the bottom surface of the lifting seat 13; when the cutter seat 10 and the cutting knife 11 on the cutter seat 10 move upwards, the return driving is carried out through a first spiral spring 22; when the lifting seat 13 and the cutting knife 14 on the lifting seat 13 move upwards, the two spiral springs 23 are used for resetting and driving.

As shown in fig. 7, a torsion spring 26 capable of resetting the clutch plate 25 is sleeved on the shaft position screw 24; the reset spring 27 is sleeved on the movable pin 16, two ends of the movable pin 16 extend out of the lifting seat 13, one end of the movable pin 16 close to the clutch plate 25 is provided with a boss, the reset spring 27 is positioned between the boss and the lifting seat 13, two ends of the reset spring 27 respectively abut against the boss and the side surface of the lifting seat 13, and the reset of the clutch plate 25 and the reset pin 16 are respectively driven by the torsion spring 26 and the reset spring 27; after the edge covering strip is cut off, the electromagnet 17 releases suction through an electric control signal, the clutch plate 25 resets through the torsion spring 26, and the movable pin 16 resets through the reset spring 27 after losing the external force action of the clutch plate 25, so that the cutting knife 14 can not move when sewing and trimming.

As shown in fig. 3 to 5, in this embodiment, the casing 1 is further provided with a first vertical guide rod 28 and a second vertical guide rod 29, the cutter seat 10 is slidably sleeved on the first guide rod 28, and the lifting seat 13 is slidably sleeved on the second guide rod 29, so as to further ensure the stability and reliability of the up-and-down movement of the cutter seat 10, the lifting seat 13, the material cutter 11 and the cutting cutter 14; the end of the main shaft 2 is provided with a crank 30, the crank 30 is connected with the needle rod 3 and can drive the needle rod 3 to reciprocate up and down, an upper rod sleeve 31 and a lower rod sleeve 32 are fixedly arranged on the machine shell 1 at an upper interval and a lower interval respectively, the needle rod 3 is inserted in the upper rod sleeve 31 and the lower rod sleeve 32 in a sliding manner, the action of the needle rod 3 is driven by the main shaft 2, a power source is reduced, and the stability and the reliability of the sewing action of the needle rod 3 are kept through the limit of the upper rod sleeve 31 and the lower rod sleeve 32.

In the embodiment, the axial direction of the main shaft 2 of the hemming sewing machine is taken as the longitudinal direction, and the direction perpendicular to the axial direction of the main shaft 2 in the horizontal plane is taken as the transverse direction; the side of the sewing machine facing the operator is taken as the front side, the opposite side is taken as the rear side, namely, the cloth moves from the front side to the rear side of the sewing machine on the bottom plate 33 by the feed dog, the side of the sewing machine facing the machine head is taken as the left side, and the side facing the machine tail is taken as the right side.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although 1, a housing is used more herein; 2. a main shaft; 3. a needle bar; 4. sewing a needle; 5. an eccentric wheel; 6. a connecting rod; 7. a connecting seat; 71. a bolt; 8. a clutch bracket; 81. a plug-in; 82. a limiting shaft; 9. a guide bar; 10. a cutter seat; 11. a material cutting knife; 12. a guide post; 13. a lifting seat; 14. a cutting knife; 15. a trip lever assembly; 15a, a locking lever; 16. a movable pin; 17. an electromagnet; 18. a limiting block; 18a, a slideway; 19. a limiting sleeve; 20. a first support screw; 21. a second support screw; 22. a first spiral spring; 23. a second spiral spring; 24. an axial screw; 25. a clutch plate; 26. a torsion spring; 27. a return spring; 28. a first guide rod; 29. a second guide rod; 30. a crank; 31. a rod sleeve is arranged; 32. a lower rod sleeve; 33. a base plate; 34. a binding device; 35. a cutter mounting rack; 36. a slider; 37. an inductor; 38. pushing the plate; 39. distributing; 40. edging, etc., without excluding the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. An automatic response is absolutely bordured and is received bordured sewing machine of bottom surface line, including casing (1), main shaft (2) and needle bar (3) that can up-and-down reciprocating motion, needle (4) have been set firmly to the lower extreme of needle bar (3), characterized by that, one end of main shaft (2) is equipped with eccentric wheel (5), be equipped with connecting rod (6) on eccentric wheel (5), the upper end of connecting rod (6) is articulated with eccentric wheel (5), the lower extreme of connecting rod (6) is equipped with connecting seat (7), be connected with on connecting seat (7) and separation and reunion support (8) and connecting rod (6) can drive separation and reunion support (8) up-and-down reciprocating motion; a vertical guide rod (9) is fixedly arranged on the machine shell (1), a cutter seat (10) is slidably sleeved on the guide rod (9), a cutter mounting frame (35) is fixedly connected to the cutter seat (10), and a vertical downward blanking cutter (11) is fixedly connected to the cutter mounting frame (35); the clutch support (8) is further provided with a loosening rod assembly (15), the clutch support (8) is provided with an insert (81) inserted into the cutter seat (10), and the loosening rod assembly (15) comprises a locking rod (15a) capable of locking the insert (81) inserted into the cutter seat (10); a vertical guide post (12) is fixedly arranged on the machine shell (1), a lifting seat (13) is sleeved on the guide post (12), and a cutting knife (14) facing downwards is fixedly connected to the lifting seat (13); the lifting seat (13) is provided with a movable pin (16) capable of being inserted into the cutter seat (10) and a return spring (27) capable of returning the movable pin (16), and the machine shell (1) is provided with an electromagnet (17) and a clutch plate (25) for driving the movable pin (16) to move; the hemming sewing machine further comprises a controller capable of controlling the electromagnet (17) to act and an inductor (37) capable of inducing the edge of the cloth (39), and the inductor (37) is electrically connected with the controller; the upper ends of the guide rod (9) and the guide column (12) are fixedly connected with the machine shell (1), the lower end of the guide rod (9) is in threaded connection with a first support screw (20), a first spiral spring (22) is sleeved on the guide rod (9), the lower end of the first spiral spring (22) abuts against the first support screw (20), and the upper end of the first spiral spring (22) abuts against the bottom surface of the cutter seat (10); the lower extreme spiro union of guide post (12) has supporting screw two (21), the cover is equipped with coil spring two (23) on guide post (12), the lower extreme of coil spring two (23) supports and leans on supporting screw two (21), the upper end of coil spring two (23) supports and leans on the bottom surface of seat (13) goes up and down.

2. A overedging sewing machine with automatic induction of edge breaking and bottom thread breaking according to claim 1, characterized in that the overedging sewing machine further comprises a bottom plate (33), a push plate (38) is arranged on the bottom plate (33), the sensor (37) is a proximity sensor and the sensor (37) is fixed on the push plate (38); the inductor (37) is located below the connecting rod (6) and arranged upwards.

3. The hemming sewing machine capable of automatically sensing to break hemming and bottom surface line according to claim 2, wherein a limit block (18) is fixedly arranged on the machine shell (1), a vertical slideway (18a) is arranged on the limit block (18), a protruding bolt (71) is arranged on one side of the connecting seat (7), a sliding block (36) is sleeved at one end of the bolt (71), and the sliding block (36) is embedded in the slideway (18a) in a sliding manner; the other side of the connecting seat (7) is fixedly connected with the clutch bracket (8); the shell (1) is further fixedly provided with a vertical limiting sleeve (19), and the clutch support (8) is provided with a limiting shaft (82) which is inserted into the limiting sleeve (19) in a sliding manner.

4. The hemming sewing machine for automatically sensing to break hemming and bottom surface line according to claim 2 wherein the movable pin (16) is transversely inserted into the lifting seat (13), and the knife holder (10) has a slot facing one end of the movable pin (16); the clutch plate (25) is connected to the machine shell (1) through a shaft position screw (24), one end of the clutch plate (25) abuts against the output end of the electromagnet (17), and the other end of the clutch plate abuts against the other end of the movable pin (16).

5. A hemming sewing machine with automatic broken hemming and bottom surface thread induction according to claim 4 wherein the shaft position screw (24) is sleeved with a torsion spring (26) which can reset the clutch plate (25); the return spring (27) is sleeved on the movable pin (16).

6. A hemming sewing machine with an automatic edge-breaking and bottom thread sensing function according to claim 3, characterized in that the machine case (1) is further provided with a first vertical guide rod (28) and a second vertical guide rod (29), the knife seat (10) is slidably sleeved on the first vertical guide rod (28), and the lifting seat (13) is slidably sleeved on the second vertical guide rod (29).

7. A hemming sewing machine with an automatic broken hem and bottom thread induction according to claim 3, characterized in that a crank (30) is provided at the end of the main shaft (2), the crank (30) is connected with the needle bar (3) and can drive the needle bar (3) to reciprocate up and down, an upper bar sleeve (31) and a lower bar sleeve (32) are respectively fixed on the machine shell (1) at an upper and lower interval, and the needle bar (3) is slidably inserted into the upper bar sleeve (31) and the lower bar sleeve (32).

8. A hemming sewing machine with automatic edge-covering and bottom thread sensing device according to claim 3, wherein the housing (1) is disposed on the bottom plate (33), the bottom plate (33) is provided with an edge-covering device (34), the locking rod (15a) is disposed along the longitudinal direction, the material cutting knife (11) is disposed at the front side of the sewing needle (4) and is biased to the right side of the sewing needle (4), and the cutting knife (14) is disposed at the rear side of the sewing needle (4).