CN213447548U

CN213447548U - Flat buttonhole machine

Info

Publication number: CN213447548U
Application number: CN202022051471.9U
Authority: CN
Inventors: 张禹
Original assignee: Beijing Joywin Fashion Textile Co ltd
Current assignee: Beijing Joywin Fashion Textile Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-15
Anticipated expiration: 2030-09-18

Abstract

The application relates to a flat buttonhole sewing machine, which comprises a base, wherein clothes move along the length direction of the base in the process of sewing buttonholes, a machine head is connected to the base and arranged along the width direction of the base, the machine head is used for sewing buttonholes and comprises a feeding device, the feeding device comprises a supporting mechanism connected to the base, the supporting mechanism is connected with two feeding mechanisms, and is positioned at the two ends of the machine head along the length direction of the base, the feeding mechanism comprises a driving roller and a driven roller, the driving roller and the driven roller can drive clothes to move, the feeding mechanism is connected with an adjusting mechanism, the adjusting mechanism can adjust the distance between the driving roller and the driven roller, so that the driving roller and the driven roller can separate and combine with each other, the adjusting mechanism is connected with a limiting mechanism, when the driving roller and the driven roller are separated from each other to a certain distance, the limiting mechanism can limit the positions of the driving roller and the driven roller. This application has the effect that improves the work efficiency height of crew cut buttonhole machine and sew up the quality of button hole.

Description

Flat buttonhole machine

Technical Field

The utility model belongs to the field of sewing machine equipment, especially a crew cut button holing machine.

Background

At present, a buttonhole sewing machine is a very important device in clothing machinery, is mainly used for processing buttonholes in various clothes and is divided into a flat buttonhole sewing machine and a round buttonhole sewing machine.

The utility model discloses a presser foot mechanism of buttonhole maker, including the workstation and set up the clamp plate on the workstation, the clamp plate divide into first clamp plate and second clamp plate, and first clamp plate and second clamp plate are provided with the through-hole that moves about when being used for needle point sewing button hole, are provided with between first clamp plate and the second clamp plate to be used for adjusting the adjusting device of through-hole size.

In the existing buttonhole sewing machine, the distance that a presser foot for pressing cloth can drive the cloth to move depends on the size of the presser foot and is limited to the specific situation of a sewing machine shell, the size of the presser foot cannot be greatly lifted and is generally smaller than 220mm, a position mark sewing mark of a buttonhole needs to be formed on the cloth, when a plurality of buttonholes distributed along the same straight line on the whole cloth need to be sewn, an operator needs to lift the presser foot again and manually adjust the position of the cloth after finishing the sewing of the previous buttonhole, the operator manually pulls the cloth for a certain distance, the presser foot is used for pressing the cloth to form the next buttonhole, the moving distance of the cloth is observed according to the operator, the operator can generate fatigue when observing the sewing mark for a long time, and the accuracy of the moving distance of the cloth is reduced, the accuracy of the button holes is reduced, and the qualification rate of the button holes of the clothes is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy rate of sewing the button holes and increase the qualification rate of the obligatory button holes, the application provides a flat buttonhole sewing machine.

The flat buttonhole machine provided by the application adopts the following technical scheme:

a flat buttonhole sewing machine comprises a base, wherein the length direction of the base is the same as the moving direction of clothes, a machine head is fixedly connected to the base and used for sewing buttonholes, the flat buttonhole sewing machine comprises a feeding device, the feeding device comprises a supporting mechanism connected to the base, the supporting mechanism is connected with two feeding mechanisms, and the two feeding mechanisms are positioned at two ends of the length direction of the base; the feeding mechanism comprises a driving roller and a driven roller which are rotatably connected with the base, a driving mechanism for driving the driving roller to rotate around the axis of the driving roller is arranged on the driving roller, the driving roller is driven by the driving mechanism at intervals to rotate by a fixed angle, and an adjusting mechanism is connected to the feeding mechanism and can adjust the distance between the driving roller and the driven roller.

By adopting the technical scheme, when the flat head buttonhole sewing machine works, the base is used for installing the machine head and the supporting mechanism, clothes needing to be sewn with button holes are placed on the supporting mechanism, the adjusting mechanism can change the position between the driving roller and the driven roller in the feeding mechanism, the adjusting mechanism is adjusted to enable the driving roller and the driven roller to be separated, the limiting mechanism is adjusted to limit the relative position between the driving roller and the driven roller, the clothes are placed between the two rollers, the limiting mechanism is adjusted again to enable the driving roller and the driven roller to be combined, the driving mechanism drives the driving roller to rotate for a certain angle, the driving roller and the driven roller can drive the clothes to move for a fixed distance, the moving distance of the clothes is equal to the distance between the two buttonholes, the driving motor stops working, the machine head works to sew the buttonholes on the clothes, after the machine head works, the driving mechanism drives the clothes to, the function of efficiently sewing button holes on the clothes is realized.

Preferably, the supporting mechanism comprises an installation plate arranged between the base and the machine head, and an installation seat fixedly connected between the base and the installation plate; offer the hole of stepping down that runs through the mounting panel setting on the mounting panel, the running roller that the hole of stepping down can hold the driven voller passes through.

Through adopting above-mentioned technical scheme, the mount pad can connection base and mounting panel for support the mounting panel, the mounting panel is used for supporting guiding mechanism's installation.

Preferably, the driving mechanism comprises a driving motor, an output shaft of the driving motor is fixedly connected with the driving roller in a coaxial mode, the driving roller is fixedly connected with a driving gear in a coaxial mode, the driven roller is fixedly connected with a driven gear in a coaxial mode, and the driven gear can be meshed with the driving gear.

By adopting the technical scheme, when the clothes are arranged between the driving roller and the driven roller and the driving roller and the driven roller are mutually matched, the driving gear is meshed with the driven gear, the driving motor is started, the driving roller can rotate by the working energy of the driving motor, the driving gear can be driven by the rotating energy of the driving roller to rotate, the driving gear can drive the driven gear to rotate, the driven gear can drive the driven roller to rotate, and the clothes are driven by the driving roller and the driven roller to move.

Preferably, guiding mechanism includes respectively with driven voller length direction both ends fixed connection's two sliding blocks, the screw hole of increaseing has all been seted up on two sliding blocks, it is perpendicular with the driven voller axis to increase the screw hole axis, it has the pole of increaseing to increase equal threaded connection on the screw hole of increaseing.

Through adopting above-mentioned technical scheme, heightening pole and sliding block threaded connection, heightening pole rotation energy drives the sliding block and removes along the length direction of heightening pole, and two sliding block synchronous motion drive driven voller move along heightening threaded hole axis direction to realize adjusting the distance between drive roll and the driven voller.

Preferably, the height adjusting rod is coaxially and stably connected with a driven bevel gear; the adjusting mechanism comprises a supporting piece which is stably connected to one side of the mounting plate, which faces away from the base, an adjusting shaft is connected to the supporting piece in a rotating mode, the axis of the adjusting shaft is parallel to the axis of the driving roller, two driving bevel gears and two driven bevel gears are coaxially and fixedly connected to the adjusting shaft, and the driving bevel gears are meshed with the two driven bevel gears in a matched mode one by one.

Through adopting above-mentioned technical scheme, support piece is used for supporting the installation of rotation axis, the rotation adjustment axle, and the adjustment axle can drive the rotation of initiative helical gear, and the initiative helical gear meshes with driven helical gear mutually, therefore the initiative helical gear can drive driven helical gear and rotate, drives two different rotations of heightening pole when realizing rotating the adjustment axle.

Preferably, the adjusting mechanism is connected with a limiting mechanism, and the limiting mechanism can limit the stability between the driving roller and the driven roller.

Through adopting above-mentioned technical scheme, stop gear can improve the stability between drive roll and the driven voller.

Preferably, support piece includes two risers, the slip mouth has been seted up on the relative lateral wall of two risers, the slip mouth can hold the sliding block and slide along the riser in it, spacing hole has been seted up on the sliding block, the axis in spacing hole and the axis parallel arrangement of drive roll, stop gear include with riser sliding connection's gag lever post, spacing hole can hold gag lever post sliding insertion.

Through adopting above-mentioned technical scheme, when the drive roll and driven voller leave mutually, the gag lever post gets into spacing downthehole towards the one end of sliding block, keeps leaving mutually of drive roll and driven voller, and the clothing of being convenient for is put into between drive roll and the driven voller.

Preferably, the limiting mechanism comprises a supporting cylinder, the supporting cylinder is fixedly connected with the supporting piece, and the limiting rod is positioned in the supporting cylinder and slides along the axial direction of the supporting cylinder; the utility model discloses a supporting cylinder, including a thick pole portion and a thin pole portion, a thick pole portion is fixed on the supporting cylinder, the limiting rod position includes thick pole portion and thin pole portion, the lateral wall of thick pole portion and the inside wall sliding connection of a supporting cylinder, the cover is equipped with the pressure spring in thin pole portion, pressure spring one end is inconsistent with the one end of thick pole portion towards thin pole portion, and the other end is stably connected with a supporting cylinder.

Through adopting above-mentioned technical scheme, when the button hole is made up to needs, the driven voller moves with the direction of drive roll dorsad, the sliding block moves to the direction of base dorsad, thick pole portion is connected with the sliding block contact, thick pole portion and sliding block relative slip, when the sliding block moves to thick pole portion and spacing hole's position relative time, because the pressure spring is to thick pole conflict contact, the pressure spring applys the power of thin pole portion dorsad to thick pole, thick pole portion keeps away from the one end of thin pole portion and gets into spacing downthehole, thereby the restriction sliding block moves along the length direction of adjusting the height pole, when placing the cloth into between drive roll and the driven voller, the spacing handle of length direction pulling in thin pole portion, thick pole portion shifts out in the spacing hole, thick pole portion and the sliding block leave mutually, the length direction of sliding block can.

Preferably, the thin rod part is connected with spacing handle in the one end in thick rod part dorsad, the last spacing connecting rod of fixedly connected with of thin rod part, stop gear locates the fixed block on the standpipe including the cover, the rectangular channel has been seted up on the fixed block, the rectangular channel can hold spacing connecting rod and insert.

By adopting the technical scheme, when the distance between the driving roller and the driven roller is adjusted, the sliding block slides along the length direction of the height-adjusting rod, the limiting connecting rod is positioned in the rectangular groove of the fixed block, and the thick rod part is in contact with the sliding block and slides relatively; when the cloth was located between drive roll and the driven voller, along thick pole portion towards the spacing handle of the length direction pulling of thin pole portion, thick pole portion shifted out spacing downthehole, shifted out the rectangular channel of fixed block until spacing connecting rod, rotated spacing handle, spacing connecting rod contradicts with the one end of fixed block dorsad standpipe and is connected, thick pole and sliding block leave mutually, and the length direction of heightening can be followed to the sliding block.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the flat head buttonhole sewing machine works, the base is used for installing the machine head and the supporting mechanism, clothes needing to be sewn with button holes are placed on the supporting mechanism, the adjusting mechanism can change the position between a driving roller and a driven roller in the feeding mechanism, the adjusting mechanism is adjusted to enable the driving roller and the driven roller to be separated, the limiting mechanism is adjusted to limit the relative position between the driving roller and the driven roller, the clothes are placed between two rollers, the limiting mechanism is adjusted again to enable the driving roller and the driven roller to be combined, the driving mechanism drives the driving roller to rotate for a certain angle, the driving roller and the driven roller can drive the clothes to move for a fixed distance, the moving distance of the clothes is equal to the distance between two buttonholes, the driving motor stops working, the machine head works to sew the buttonholes on the clothes, after the machine head works, the driving mechanism drives the clothes to move through, the function of efficiently sewing button holes on the clothes is realized;

2. the support piece is used for supporting the installation of the rotating shaft, the adjusting shaft is rotated, the adjusting shaft can drive the driving bevel gear to rotate, and the driving bevel gear is meshed with the driven bevel gear, so that the driving bevel gear can drive the driven bevel gear to rotate, and the two height adjusting rods are driven to rotate differently when the adjusting shaft is rotated;

3. when the distance between the driving roller and the driven roller is adjusted, the sliding block slides along the length direction of the heightening rod, the limiting connecting rod is positioned in the rectangular groove of the fixed block, and the thick rod part is in contact with the sliding block and slides relatively; when the cloth was located between drive roll and the driven voller, along thick pole portion towards the spacing handle of the length direction pulling of thin pole portion, thick pole portion shifted out spacing downthehole, shifted out the rectangular channel of fixed block until spacing connecting rod, rotated spacing handle, spacing connecting rod contradicts with the one end of fixed block dorsad standpipe and is connected, thick pole and sliding block leave mutually, and the length direction of heightening can be followed to the sliding block.

Drawings

FIG. 1 is a schematic view of the overall structure of a flat buttonhole sewing machine according to the present application;

FIG. 2 is a side view of the present flat buttonhole machine;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is an enlarged view at C in fig. 1.

Description of reference numerals: 11. a base; 12. a machine head; 2. a support mechanism; 21. a mounting seat; 22. mounting a plate; 23. a hole of abdication; 3. a feeding mechanism; 31. a drive motor; 311. a motor shaft; 32. a drive roll; 321. a first roller; 322. a drive shaft; 323. a driven shaft; 33. a coupling; 34. a drive gear; 35. a support; 36. a driven roller; 361. a second roller; 362. a connecting shaft; 37. a driven gear; 4. an adjustment mechanism; 41. a slider; 411. a limiting hole; 412. heightening the threaded hole; 42. a height adjusting rod; 421. a thread height-adjusting portion; 422. a rotation connecting part; 43. a supporting seat; 44. a support member; 441. a vertical tube; 4411. a sliding port; 442. a transverse tube; 45. an adjustment shaft; 46. a driving bevel gear; 47. a handle; 48. a driven helical gear; 5. a limiting mechanism; 51. a support cylinder; 52. a limiting rod; 521. a thick rod part; 522. a thin rod part; 53. a pressure spring; 54. a limiting handle; 55. a limit connecting rod; 56. a fixed block; 561. a rectangular groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1, a straight buttonhole sewing machine comprises a base 11 and a machine head 12 fixedly connected to the base 11, wherein the base 11 is rectangular and plate-shaped, one end of the machine head 12 along the width direction of the base 11 is fixedly connected with the base 11, and the other end is suspended and provided with a sewing device for sewing buttonholes with various shapes and sizes.

The embodiment of the application discloses a flat buttonhole machine, which comprises a supporting mechanism 2 stably connected to one side, facing a machine head 12, of a base 11, and a locking mechanism 2 fixedly connected to the other side of the base; the support mechanism 2 is stably connected with two feeding mechanisms 3, and the two feeding mechanisms 3 are respectively connected to two ends of the machine head 12 along the length direction of the base 11. The feeding mechanism 3 comprises a driving roller 32 and a driven roller 36 which are rotatably connected with the base, the clothes are arranged between the driving roller 32 and the driven roller 36, and the rotation of the driving roller 32 and the driven roller 36 can drive the clothes to move along the length direction of the base 11; the feeding mechanism 3 is connected with an adjusting mechanism 4, the adjusting mechanism 4 can adjust the distance between the driving roller 32 and the driven roller 36, when the driving roller 32 is separated from the driven roller 36, clothes can be conveniently placed between the driving roller 32 and the driven roller 36, when the driving roller 32 is close to the driven roller 36, the driving roller 32 and the driven roller 36 are pressed against the clothes, and at the moment, the driving roller 32 rotates to drive the clothes to move. The adjusting mechanism 4 is connected with a limiting mechanism 5, and the limiting mechanism 5 can keep the relative position between the driving roller 32 and the driven roller 36 stable.

Referring to fig. 2, the supporting mechanism 2 includes a mounting plate 22 disposed on one side of the base 11 close to the head 12, the mounting plate 22 is a rectangular plate having a length direction the same as that of the base 11, the mounting plate 22 is disposed parallel to the base 11, one end of the mounting plate 22 in the width direction is located between the head 12 and the base 11, and the other end of the mounting plate 22 in the width direction is disposed on one side of the base 11 facing away from the head 12 in the width direction.

Referring to fig. 3, four corners of the mounting plate 22 are provided with mounting seats 21, one end of each mounting seat 21 is fixedly connected to the base 11, the other end of each mounting seat 21 is fixedly connected to the mounting plate 22, and the mounting seats 21 are used for supporting the mounting plate 22.

Referring to fig. 3, the mounting plate 22 is provided with two abdicating holes 23 penetrating through the mounting plate 22, the abdicating holes 23 are spaced apart along the length direction of the mounting plate 22, and the abdicating holes 23 can accommodate the driving roller 32 and the driven roller 36 to be close to each other.

Referring to fig. 3, the feeding mechanism 3 includes a driving motor 31 stably connected to the side wall of the base 11 near the head 12, and the driving motor 31 includes a motor shaft 311, and an axis of the motor shaft 311 is overlapped with an axis of the driving roller 32.

Referring to fig. 3, the driving roller 32 includes a first roller 321 at a middle portion, and a driving shaft 322 and a driven shaft 323 coaxially and fixedly connected to both ends of the first roller 321, the driving shaft 322 and the driven shaft 323 having the same shape.

Referring to fig. 3, one end of the driving shaft 322 far from the first roller 321 is coaxially and stably connected with the motor shaft 311 through the coupling 33.

Referring to fig. 3, the driving shaft 322 and the driven shaft 323 are both sleeved with the driving gear 34 coaxially fixed thereto.

Referring to fig. 3, the feeding mechanism 3 includes two supports 35, the two supports 35 are respectively located at two sides of the first roller 321 in the length direction, the two supports 35 are respectively sleeved on the driving shaft 322 and the driven shaft 323, the supports 35 are rotatably connected with the driving shaft 322 and the driven shaft 323, and the supports 35 are fixedly connected with the base 11.

Referring to fig. 3, the feeding mechanism 3 includes the driven roller 36, the driven roller 36 includes a second roller 361, an axis of the second roller 361 is parallel to an axis of the first roller 321, and is located in a same plane perpendicular to the base 11 along the axis of the second roller 361 and the axis of the first roller 321, and the second roller 361 and the first roller 321 have the same shape.

Referring to fig. 3, both ends of the second roller 361 are coaxially and fixedly connected with connecting shafts 362, and the shapes of the two connecting shafts 362 are the same.

Referring to fig. 3, two connecting shafts 362 are respectively sleeved with a driven gear 37, the driven gears 37 are coaxially and fixedly connected with the connecting shafts 362, the driven gears 37 can be meshed with the driving gear 34, and the transmission ratio of the driven gears 37 to the driving gear 34 is 1: 1.

Referring to fig. 3, when the driving gear 34 is engaged with the driven gear 37, the driving motor 31 is started, the driving motor 31 is operated to drive the motor shaft 311 to rotate, the motor shaft 311 rotates to drive the driving shaft 322 and the first roller 321 fixedly connected to the driving shaft 322 to rotate, the driving shaft 322 rotates to drive the driving gear 34 to rotate, the driving gear 34 can drive the driven gear 37 to rotate, the driven gear 37 can drive the connecting shaft 362 fixedly connected to the driven gear 37 and the second roller 361 to rotate, so as to drive the first roller 321 and the second roller 361 to rotate.

Referring to fig. 3, the adjusting mechanism 4 includes two sliding blocks 41 respectively connected to two connecting shafts 362, the sliding blocks 41 are rectangular blocks, the sliding blocks 41 are sleeved on one ends of the connecting shafts 362 far away from the second roller 361, and the sliding blocks 41 are rotatably connected to the connecting shafts 362.

Referring to fig. 3, a limiting hole 411 is formed at one end of the sliding block 41 opposite to the connecting shaft 362, and the limiting hole 411 is a circular hole whose axis is parallel to the axis of the connecting shaft 362.

Referring to fig. 3, two sliding blocks 41 are both provided with a height-adjusting threaded hole 412, the height-adjusting threaded hole 412 is a round hole with an axis perpendicular to the direction of the base 11, the height-adjusting threaded hole 412 is arranged to penetrate through the sliding block 41, and an inner thread is arranged on the inner wall of the height-adjusting threaded hole 412.

Referring to fig. 3, a height adjusting lever 42 is connected to each of the two sliding blocks 41.

Referring to fig. 3, the height-adjusting rod 42 includes a threaded height-adjusting portion 421, the threaded height-adjusting portion 421 is a cylinder provided with an external thread on the outer side, the axis of the threaded height-adjusting rod 42 coincides with the axis of the height-adjusting threaded hole 412, and the threaded height-adjusting portion 421 is in threaded connection with the height-adjusting threaded hole 412.

Referring to fig. 3, the height adjusting lever 42 is rotated about the axis of the screw height adjusting portion 421, and the slide block 41 can drive the driven roller 36 to move in the axial direction of the height adjusting lever 42.

Referring to fig. 3, a rotation connection portion 422 is integrally formed at one end of the screw height adjusting portion 421 facing the mounting plate 22, and the rotation connection portion 422 is a cylinder having an axis coinciding with an axis of the screw height adjusting portion 421.

Referring to fig. 3, rotation connecting portion 422 is connected with supporting seat 43, and supporting seat 43 is the cylinder that axis and rotation connecting portion 422's axis coincidence set up, and supporting seat 43 is along self length direction's one end and mounting panel 22 fixed connection, and the round hole that axis and rotation connecting portion 422's axis coincidence set up is seted up to the other end, and supporting seat 43 passes through the round hole and is connected with rotation connecting portion 422 rotation.

Referring to fig. 3, a gear rotating shaft is coaxially and integrally formed at one end of the screw height adjusting portion 421, which is opposite to the rotating connection portion 422, and the axis of the gear rotating shaft and the axis of the screw height adjusting portion 421 are overlapped to form a cylinder.

Referring to fig. 3, a driven helical gear 48 is coaxially and fixedly connected to the gear rotating shaft.

Referring to fig. 3, the adjustment mechanism 4 includes a support member 44 fixedly attached to a side of the mounting plate 22 facing away from the base 11, the support member 44 being a U-shaped pipe frame.

Referring to fig. 3, the supporting member 44 includes two horizontal pipes, the axial line of the horizontal pipe is along the width direction of the base, the cross section of the horizontal pipe is square, two ends of the axial line of the horizontal pipe are respectively and fixedly provided with a vertical pipe communicated with the inner cavity of the horizontal pipe, the cross section of the vertical pipe is square, the two vertical pipes 441 are arranged along the width direction of the base 11 at intervals, the length direction of the two vertical pipes 441 is perpendicular to the mounting plate 22, one ends of the two vertical pipes 441 in the length direction are fixedly connected with the mounting plate 22, and the two vertical pipes 441 are respectively located.

Referring to fig. 3, the two vertical pipes 441 have opposite side walls formed with sliding openings 4411, the sliding openings 4411 are long square holes arranged along the length direction of the vertical pipes 441, and the sliding openings 4411 can accommodate the sliding blocks 41 to slide along the length direction of the vertical pipes 441 therein.

Referring to fig. 3, the side wall of the two vertical tubes 441 facing away is an outer side wall.

Referring to fig. 3, an adjusting shaft 45 positioned in the horizontal pipe is connected to one end of the vertical pipes 441 facing away from the mounting plate 22, the axis of the adjusting shaft 45 is parallel to the axes of the driving roller 32 and the driven roller 36, the adjusting shaft 45 penetrates through the outer side walls of the two vertical pipes 441, and the adjusting shaft 45 is rotatably connected to the two vertical pipes 441.

Referring to fig. 3, one end of the adjusting shaft 45 extends out of the supporting member 44, one end of the adjusting shaft 45 extending out of the supporting member is fixedly connected with a handle 47, and the rotating handle 47 can drive the adjusting shaft 45 to rotate around the axis of the adjusting shaft.

Referring to fig. 3, two driving bevel gears 46 are coaxially and fixedly connected to the adjusting shaft 45, and the two driving bevel gears 46 are respectively engaged with two driven bevel gears 48.

Referring to fig. 3, the handle 47 is rotated, the handle 47 drives the adjusting shaft 45 to rotate, the adjusting shaft 45 drives the driving bevel gear 46 to rotate, the driving bevel gear 46 is engaged with the driven bevel gear 48, the driving bevel gear 46 drives the driven bevel gear 48 to rotate, the bevel gear drives the height-adjusting rod 42 to rotate, the height-adjusting rod 42 rotates to drive the sliding block 41 to reciprocate along the axis of the height-adjusting rod 42, so as to drive the driven roller 36 to reciprocate along the axis of the height-adjusting rod 42, and therefore the driven roller 36 is engaged with and disengaged from the driving roller 32.

Referring to fig. 3 and 4, the limiting mechanism 5 includes a supporting cylinder 51 disposed on the outer side walls of the two vertical pipes 441 in a penetrating manner, the supporting cylinder 51 is a pipe with one end sealed, the inner diameter of the supporting cylinder 51 is not greater than the diameter of the limiting hole 411, the axis of the supporting cylinder 51 is parallel to the axis of the limiting hole 411, the axis of the supporting cylinder 51 and the axis of the limiting hole 411 are located in the same plane perpendicular to the mounting plate 22, the sealed end of the supporting cylinder 51 is flush with the outer side wall of the vertical pipe 441, and the other end of the supporting cylinder 51 is located in the vertical pipe.

Referring to fig. 4, a limiting rod 52 is connected in the support cylinder 51, the limiting rod 52 includes a thick rod portion 521, the thick rod portion 521 is a cylinder whose axis is coaxial with the support cylinder 51, and an outer side wall of the thick rod portion 521 is slidably connected with an inner side wall of the support cylinder 51.

Referring to fig. 4, a thin rod portion 522 is fixedly connected to one end of the thick rod portion 521 facing away from the sliding block 41, the thin rod portion 522 is a cylinder having an axis coaxial with the thick rod portion 521, one end of the thin rod portion 522 facing away from the thick rod portion 521 passes through the closed end of the support cylinder 51 and is located outside the vertical tube 441, and the thin rod portion 522 is slidably connected to the support cylinder 51.

Referring to fig. 4, the thin rod part 522 is sleeved with a compression spring 53, the compression spring 53 is positioned in the support cylinder 51, one end of the compression spring 53 abuts against one end of the thick rod part 521 facing the thin rod part 522, and the other end abuts against the closed end of the support cylinder 51.

Referring to fig. 4, a limit handle 54 is fixedly connected to an end of the thin rod part 522 opposite to the thick rod part 521.

Referring to fig. 4, the thin rod part is fixedly connected with a limit connecting rod 55 between the limit handle 54 and the outer side wall of the vertical tube 441, and the limit connecting rod comprises two vertical rods connected with two sides of the thin rod, and the two vertical rods are cylindrical rods with the same length direction.

Referring to fig. 5, the limiting mechanism 5 includes a fixing block 56 connected to the outer side wall of the standpipe 441, the fixing block 56 is a cylinder, the axis of the fixing block 56 coincides with the axis of the limiting rod 52, one end of the fixing block 56 in the length direction is fixedly connected to the outer side wall of the standpipe 441, a rectangular groove 561 is formed in the fixing block 56 along the radial direction of the fixing block 56, the rectangular groove 561 penetrates through the fixing block 56, and the rectangular groove 561 can accommodate the limiting connecting rod 55.

Referring to fig. 3, when a button hole needs to be sewn, the handle 47 is rotated, the driven roller 36 moves in a direction away from the mounting plate 22, the driven roller 36 is separated from the driving roller 32, the limit connecting rod 55 is located in the rectangular groove 561 of the fixing block 56, the thick rod portion 521 is in contact connection with the sliding block 41, the thick rod portion 521 slides relative to the sliding block 41, when the sliding block 41 moves until the axis of the thick rod portion 521 coincides with the axis of the limit hole 411, due to the interference of the pressure spring 53 on the thick rod portion 521, the pressure spring 53 applies a force away from the thin rod portion to the thick rod portion, and the diameter of the thick rod portion is not greater than that of the limit hole 411, so that one end of the thick rod portion, which is far away from the thin rod portion, enters the limit hole 411, and the.

Referring to fig. 3, when the cloth is placed between the driving roller 32 and the driven roller 36, the limit handle 54 is pulled in the direction that the thin rod portion 522 faces away from the thick rod portion 521, the thick rod moves out of the limit hole 411 until the limit connecting rod 55 moves out of the rectangular groove 561 of the fixed block 56, the limit handle 54 is rotated, the limit connecting rod 55 is in contact connection with one end of the fixed block 56 facing away from the vertical pipe 441, the thick rod portion 521 is separated from the sliding block 41, the handle 47 is rotated in the opposite direction, and the sliding block 41 can move in the direction perpendicular to the base 11.

The implementation principle of a straight buttonhole machine in the embodiment of the application is as follows: when the flat head buttonhole sewing machine works, the base 11 is used for supporting the machine head 12 and the supporting mechanism 2, clothes needing to be sewn with buttonholes are placed on the supporting mechanism 2, the adjusting mechanism 4 can change the position between the driving roller 32 and the driven roller 36 in the feeding mechanism 3, the adjusting mechanism 4 is adjusted to enable the driving roller 32 and the driven roller 36 to be separated, the limiting mechanism 5 is adjusted to limit the relative position of the driving roller 32 and the driven roller 36, the clothes are placed between the two driving rollers 32 and the driven roller 36, the limiting mechanism 5 is adjusted again to enable the driving roller 32 and the driven roller 36 to be combined, the feeding mechanism 3 can drive the clothes to move, the machine head 12 works, and the buttonholes are sewn on the clothes.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A flat buttonhole sewing machine, includes base (11), the length direction of base (11) is the same with the clothing moving direction, fixedly connected with aircraft nose (12) on base (11), aircraft nose (12) are used for sewing up the buttonhole, its characterized in that: the automatic feeding device comprises a feeding device, wherein the feeding device comprises a supporting mechanism (2) connected to a base (11), the supporting mechanism (2) is connected with two feeding mechanisms (3), and the two feeding mechanisms (3) are positioned at two ends of the base (11) in the length direction; feeding mechanism (3) include rotate drive roll (32) and driven voller (36) of being connected with base (11), be provided with on drive roll (32) and drive its driving mechanism around self axis pivoted, the driving mechanism interval drives the drive roll and rotates fixed angle, be connected with guiding mechanism (4) on feeding mechanism (3), distance between guiding mechanism (4) can adjust drive roll (32) and driven voller (36).

2. The buttonhole sewing machine according to claim 1, characterized in that: the supporting mechanism (2) comprises a mounting plate (22) arranged between the base (11) and the machine head (12), and a mounting seat (21) fixedly connected between the base (11) and the mounting plate (22); offer hole of stepping down (23) that runs through mounting panel (22) setting on mounting panel (22), the running roller that hole of stepping down (23) can hold driven voller (36) passes through.

3. The buttonhole sewing machine of claim 2, wherein: the driving mechanism comprises a driving motor (31), an output shaft of the driving motor (31) is coaxially and fixedly connected with the driving roller (32), the driving roller (32) is coaxially and fixedly connected with a driving gear (34), the driven roller (36) is coaxially and fixedly connected with a driven gear (37), and the driven gear (37) can be meshed with the driving gear (34).

4. The buttonhole sewing machine of claim 3, wherein: the adjusting mechanism (4) comprises two sliding blocks (41) which are respectively fixedly connected with two ends of the driven roller (36) in the length direction, height-adjusting threaded holes (412) are formed in the two sliding blocks (41), the axis of each height-adjusting threaded hole (412) is perpendicular to the axis of the driven roller, and height-adjusting rods (42) are connected to the height-adjusting threaded holes (412) in a threaded mode.

5. The buttonhole sewing machine of claim 4, wherein: the height adjusting rod (42) is coaxially and stably connected with a driven bevel gear (48); adjustment mechanism (4) are including stable connection in mounting panel (22) support piece (44) of base (11) one side dorsad, it is connected with adjustment axle (45) to rotate on support piece (44), the axis and drive roll (32) axis parallel arrangement of adjustment axle (45), two coaxial fixedly connected with drive helical gear (46) on adjustment axle (45), two drive helical gear (46) and two driven helical gear (48) mutual matching mesh one by one.

6. The buttonhole sewing machine of claim 5, wherein: the adjusting mechanism (4) is connected with a limiting mechanism (5), and the limiting mechanism (5) can limit the space between the driving roller (32) and the driven roller (36) to be kept stable.

7. The buttonhole sewing machine of claim 6, wherein: the supporting piece (44) comprises two vertical pipes (441), sliding holes (4411) are formed in the opposite side walls of the two vertical pipes (441), the sliding holes (4411) can accommodate sliding blocks (41) to slide along the vertical pipes (441) in the sliding holes, limiting holes (411) are formed in the sliding blocks (41), the axis of each limiting hole (411) is parallel to the axis of the driving roller (32), the limiting mechanism (5) comprises a limiting rod (52) in sliding connection with the vertical pipes (441), and the limiting rods (52) can be accommodated in the limiting holes (411) to be inserted in a sliding mode.

8. The buttonhole sewing machine of claim 7, wherein: the limiting mechanism (5) comprises a supporting cylinder (51), the supporting cylinder (51) is fixedly connected with the supporting piece (44), and the limiting rod (52) is located in the supporting cylinder (51) and slides along the axial direction of the supporting cylinder (51);

the utility model discloses a spacing pole (52) position is including thick pole portion (521) and thin pole portion (522), the lateral wall of thick pole portion (521) and the inside wall sliding connection who supports a section of thick bamboo (51), the cover is equipped with pressure spring (53) on thin pole portion (522), pressure spring (53) one end is inconsistent with the one end of thick pole portion (521) towards thin pole portion (522), and the other end is with a support section of thick bamboo (51) stable connection.

9. The buttonhole sewing machine of claim 8, wherein: one end of the thin rod part (522), which faces away from the thick rod part (521), is connected with a limiting handle (54), the thin rod part (522) is fixedly connected with a limiting connecting rod (55), the limiting mechanism (5) comprises a fixing block (56) sleeved on the vertical tube (441), a rectangular groove (561) is formed in the fixing block (56), and the rectangular groove (561) can accommodate the insertion of the limiting connecting rod (55).