WO2019101033A1 - Machine à coudre et son dispositif de prévention de formation de nid d'oiseau, et pied presseur de machine à coudre - Google Patents

Machine à coudre et son dispositif de prévention de formation de nid d'oiseau, et pied presseur de machine à coudre Download PDF

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Publication number
WO2019101033A1
WO2019101033A1 PCT/CN2018/116154 CN2018116154W WO2019101033A1 WO 2019101033 A1 WO2019101033 A1 WO 2019101033A1 CN 2018116154 W CN2018116154 W CN 2018116154W WO 2019101033 A1 WO2019101033 A1 WO 2019101033A1
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WO
WIPO (PCT)
Prior art keywords
sewing machine
presser foot
wire
bird nest
nest device
Prior art date
Application number
PCT/CN2018/116154
Other languages
English (en)
Chinese (zh)
Inventor
姜进元
李志朝
Original Assignee
强信机械科技(莱州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201721609145.7U external-priority patent/CN207512388U/zh
Priority claimed from CN201820989118.5U external-priority patent/CN208430303U/zh
Application filed by 强信机械科技(莱州)有限公司 filed Critical 强信机械科技(莱州)有限公司
Publication of WO2019101033A1 publication Critical patent/WO2019101033A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/12—Presser-foot attachment
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread

Definitions

  • the present invention relates to the field of sewing equipment, and in particular to a sewing machine, a bird nest prevention device thereof, and a sewing machine presser foot.
  • Sewing is an important processing procedure for products such as garments and hats. Sewing equipment is usually required in the sewing process.
  • the sewing machine is also called a flat car. It is a kind of sewing machine. It mainly uses a sewing thread to form a kind on the sewing material. Stitch, which makes one or more layers of sewing material intertwined or stitched. It is usually divided into two types: thin material and thick material.
  • the flat sewing machine can sew cotton, hemp, silk, wool, rayon and other fabrics as well as leather and plastic. Paper and other products, thin materials are generally used for knitting, underwear, shirts, uniforms, etc., thick materials are generally used in all kinds of sportswear, jeans, fashion, coats, shoes and hats, leather, luggage and so on.
  • the bird's nest phenomenon refers to the situation where the upper thread is left on the presser foot surface and the bottom thread appears at the beginning of the stitching machine, which seriously affects the appearance of the product and the quality of the sewing. In order to avoid the bird nest, it is usually necessary to use the anti-bird nest phenomenon. Bird's nest device.
  • the market anti-bird nest device is equipped with a wire grabbing device on the side, which has a slightly larger structure and affects the operation.
  • the speed of catching lines is slow, which affects work efficiency.
  • sewing machine presser foot is an indispensable part in the feeding mechanism of the sewing machine.
  • Various types of sewing machine presser foot play an important role in the production process, such as sewing machine pressure for the slash line and the hidden zipper. Foot, pleating sewing machine presser foot, etc. It is very important to use different sewing machine presser feet in different sewing operations.
  • the applicant has previously disclosed a flat sewing machine anti-bird nest device by the publication number CN105544098A, and specifically discloses that a shallow groove is arranged in the middle of the presser foot bottom plate, and a round knife is embedded in the shallow groove, and between the two presser feet of the presser foot bottom plate A slit through which the suture thread can be inserted is provided, and a circumferential edge of the circular knife covers a part of the slit.
  • the gap through which the suture thread penetrates is located on the side of the two toe stitches with the bottom surface of the presser foot, so that the thread entry is not smoothly smoothed, and in the round knife, the circle where the cutting thread actually acts is occupied by the circle.
  • a small part of the knife occupies a large area of the bottom plate of the presser foot, which causes waste of the processing technology. Also, the stitch line transmitted from the gap meets the front side of the blade of the round knife, and the action of the broken line is "cut". The force required for "cutting" is greater and the round knife wears faster.
  • a primary object of the present invention is to provide an anti-bird nest device for a sewing machine which has a small structure and a fast thread catching speed.
  • Another object of the present invention is to provide a sewing machine having the above-described bird nest prevention device for a sewing machine.
  • the present invention provides an anti-bird nest device for a sewing machine, comprising a wire hook component, a driving component, a mounting frame assembly, a first connecting rod, a wire hooking plate, a second connecting rod and an air suction tube;
  • the driving component comprises a driving body and a driving rod, the driving body is mounted on the mounting frame assembly; the first end of the first connecting rod is hinged with the mounting frame assembly; the second end of the first connecting rod is hinged with the first end of the wire hooking plate, the line The second end of the hooking plate is installed at the tail end of the hook component; the two ends of the second link are respectively hinged with the middle of the first link and the driving rod;
  • the suction pipe is mounted on the mounting frame assembly and located below the wire hook component, the driving component
  • the drive line hook member moves along the top wall of the suction duct, and the end portion of the hook member has a hook portion for the hook line, and the nozzle of the suction duct is disposed toward the hook portion.
  • Another object of the present invention is to disclose a sewing machine presser foot that overcomes the deficiencies of the prior art, and the technical solution adopted is:
  • a sewing machine presser foot comprising a presser foot bottom plate and a presser foot hinge hinged to the presser foot bottom plate, the presser foot bottom plate comprising a left toe and a left toe, wherein the left toe and the left toe are provided with a stitch seam, wherein: a line slot on the bottom plate of the presser foot, on which the seam line passes, a through-line groove that communicates with the needle slit and smoothly transitions, and a shallow groove in the middle of the presser foot bottom plate, the shallow groove A half ring blade is placed inside, and a pressure plate is placed on the half ring blade.
  • the present invention improves the original anti-bird's nest presser foot, and changes the cutting position of the blade from the original intermediate position to the side, and changes to cut, and changes the original cross-line groove from the original side to the original side.
  • the center position ensures smooth and stable secant cut, reduces blade wear and has a short secant line.
  • the present invention provides a sewing machine comprising a sewing machine head and an anti-bird nest device for a sewing machine, wherein the anti-bird nest device for the sewing machine is mounted on one side of the sewing machine head, wherein the anti-bird nest device for the sewing machine is as described above
  • connection of the cylinder and the wire hook component by the link type connection method ensures that the wire hook component is quickly cut out and the cutting position is stable.
  • the wire hook component is separated from the presser foot for easy installation and easy replacement.
  • FIG. 1 is a structural schematic view showing the state in which the wire hook member of the embodiment of the anti-bird nest device for a sewing machine of the present invention is not cut out.
  • Fig. 2 is a structural schematic view showing the first angle of the state in which the wire hook member of the embodiment of the anti-bird nest device for a sewing machine of the present invention is cut.
  • Fig. 3 is a structural view showing the second angle of the state in which the wire hook member of the embodiment of the anti-bird nest device for a sewing machine of the present invention is cut.
  • Figure 4 is a partial enlarged view of a portion A in Figure 3.
  • Figure 5 is a schematic view showing the structure of the presser foot of the sewing machine of the present invention.
  • Figure 6 is a schematic view showing the structure of the presser foot bottom plate of the present invention.
  • Fig. 7 is a structural schematic view showing another perspective of the presser foot plate of the present invention.
  • Figure 8 is a schematic view showing the structure of a semi-annular blade of the present invention.
  • Figure 9 is a schematic view showing the structure of a presser blade of the present invention.
  • Figure 10 is a schematic view showing the structure of the presser foot of the present invention.
  • the sewing machine of the present embodiment includes a sewing machine head 1, a presser foot 12, and a thread cutting mechanism.
  • the anti-bird nest device of the sewing machine is mounted on one side of the sewing machine head 1.
  • the birdproof nest device includes a wire hook member 2 and a driving member.
  • the mounting frame assembly 4 the first link 5, the wire hooking plate 6, the second link 7, and the suction duct 8.
  • the bird nest device is fixedly mounted on the sewing machine head 1 by a mounting frame assembly 4.
  • the driving member includes a driving body and a driving rod.
  • the driving member is a cylinder 3
  • the driving member body is a cylinder body 31, and the driving rod is a piston rod 32.
  • the driving body is mounted on the mounting frame assembly 4, the first end of the first connecting rod 5 is hinged with the mounting bracket assembly 4, and the second end of the first connecting rod 5 is hinged with the first end of the wire hooking plate 6, the first connection
  • the rod 5 is a curved rod whose central portion is curved away from the side of the cylinder 3, and the first end of the first link 5 is located above the second end of the first link 5 in the Z direction.
  • the end of the hook member 2 is mounted at the second end of the hooking plate 6, the end of the second link 7 is hinged to a position near the middle of the first link 5, and the other end of the second link 7 is hinged to the piston rod 32.
  • the mounting bracket assembly 4 includes a first mounting bracket 41, a second mounting bracket 42 and a third mounting bracket 43 that are fixedly coupled in sequence.
  • the first mounting bracket 41 is fixed to the sewing machine head 1, and the cylinder housing 31 Fixed to the third mounting frame 43, the first end of the first link 5 is hinged to the third mounting frame 43.
  • the first mounting frame 41 is further provided with two first strip-shaped openings 412 extending in the Y direction.
  • Two first threaded holes 11 are defined in the sewing machine head 1 at positions corresponding to the first strip-shaped openings 412.
  • the first screw (not shown) sequentially passes the first screw hole 412 and the first strip opening 412 to fix the first mounting bracket 41 to the sewing machine head 1.
  • the first mounting bracket 41 is provided with two second strip-shaped openings 411 extending in the X direction
  • the second mounting bracket 42 is provided with two second threaded holes at positions corresponding to the second strip-shaped openings 411 ( Not shown), the second screw (not shown) sequentially connects the first mounting bracket 41 and the second mounting bracket 42 through the second threaded hole and the second strip opening 411.
  • the second mounting frame 42 defines two third strip-shaped openings 421 extending in the Z direction.
  • the third mounting bracket 43 defines a third threaded hole 431 at a position corresponding to the third strip-shaped opening 421.
  • the three screws sequentially connect the second mounting bracket 42 to the third mounting bracket 43 through the third threaded hole 431 and the third strip-shaped opening 421.
  • the cylinder 3, the first link 5, the wire hooking plate 6, the second link 7, and the suction pipe 8 are adjusted by adjusting the positional relationship between the first mounting frame 41, the second mounting frame 42, and the third mounting frame 43. The location of the space.
  • the tail portion of the hook member 2 is provided with a through hole 21, and the second end of the hooking plate 6 has a connecting portion 61 perpendicular to the longitudinal direction of the hook member 2, and the connecting portion 61 is inserted into the through hole 21.
  • the suction pipe 8 is mounted on the mounting frame assembly 4 and located below the wire hook member 2.
  • the top wall of the suction pipe 8 is provided with a guiding groove 81 extending in the longitudinal direction of the hook member 2, and the cylinder 3 driving line
  • the hook member 2 moves along the guide groove 81.
  • the end of the hook member 2 has a hook portion 22 for the hook line.
  • the first mounting portion 911 and the limiting portion 912 are fixed to the mounting bracket assembly 4, and the first fixing portion 911 is fixedly connected to the third mounting bracket 43.
  • the seat portion 912 is located above the guide groove 81 and extends along the guide groove 81, and the stopper portion 912 abuts against the wire hook member 2.
  • the suction pipe 8 is provided with a second pressure spring 92.
  • the second pressure spring 92 includes a second fixing portion 921 and a pressing portion 922 which are perpendicular to each other.
  • the second fixing portion 921 is fixedly connected to the suction pipe 8 to apply pressure.
  • the portion 922 abuts on the limiting portion 912.
  • An end of the limiting portion 912 adjacent to the hook portion 22 has an arcuate portion 9121.
  • the curved portion 9121 is recessed into the groove 81.
  • the pressing portion 922 is provided with an abutting portion 9221 at a position corresponding to the curved portion 9121. a gap is formed between the pressing portion 922 and the limiting portion 912, the abutting portion 9221 is bent toward the limiting portion 912 side, and the abutting portion 9221 guides the curved portion 9121 into the groove 81, thereby the wire hook member 2 is restricted in the guide groove 81, and an excessive force is not applied to the hook member 2 to cause the hook member 2 to be blocked.
  • the thread is cut by the thread cutting mechanism.
  • the piston rod 32 of the cylinder 3 drives the second link 7 to swing, and the second link 7 drives the first link 5 to swing.
  • a link 5 drives the wire hooking plate 6 to swing, and the wire hook member 2 is fixedly connected with the wire hooking plate 6, and the wire hook member 2 moves along the guiding groove 81 to the presser foot 12 under the driving of the wire hooking plate 6,
  • the hook of the upper thread is hooked by the hook portion 22 and then returned to the initial position, and the air suction tube 8 sucks the thread end and the sewing machine starts normal sewing.
  • the anti-bird nest device for the sewing machine connects the cylinder and the wire hook component by means of a link type connection, which can ensure that the wire hook component is quickly cut out and the cutting position is stable.
  • the wire hook component is separated from the presser foot for easy installation and easy replacement.
  • the present invention also provides a sewing machine presser foot, referring to FIG. 5 to FIG. 10, the sewing machine presser foot comprises a presser foot bottom plate 1', and a presser foot handle 2' hinged with the presser foot bottom plate, the presser foot bottom plate 1' includes a left toe 1 '1 and a left toe 1 '2, and a stitch 1'3 is disposed between the left toe 1 '1 and the left toe 1 '2, wherein the presser foot base 1'
  • An extension line of the stitch 1'3 is provided with a through-line crossing, a threaded groove 1'4 communicating with the needle slit 1'3 and smoothly transitioning, and a rounded rectangle is arranged in the middle of the presser foot bottom 1' a shallow groove 1'5, a bottom of the rounded rectangular shallow groove 1'5 is provided with a semicircular shallow groove 1'6, a chord of the semicircular shallow groove 1'6 and the rounded rectangular shallow groove 1'5
  • the crossing groove 1 is
  • the sewing machine necessarily includes the sewing machine head, the anti-bird nest device for the sewing machine and the presser foot. At the same time, the above-mentioned anti-bird nest device and the presser foot are used, and the technical effect of the sewing machine is better.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne une machine à coudre et son dispositif de prévention de formation de nid d'oiseau, et un pied presseur de machine à coudre. Le dispositif de prévention de formation de nid d'oiseau comprend un composant d'accrochage de ligne (2), un élément d'entraînement, un ensemble formant cadre de montage (4), une première tige de liaison (5), une plaque de liaison d'accrochage de ligne (6), une deuxième tige de liaison (7) et un tuyau d'aspiration d'air (8) ; l'élément d'entraînement comprend un corps d'élément d'entraînement et une tige d'entraînement, le corps d'élément d'entraînement étant monté sur l'ensemble formant cadre de montage (4) ; une première extrémité de la première tige de liaison (5) est articulée au niveau de l'ensemble formant cadre de montage (4) ; une deuxième extrémité de la première tige de liaison (5) est articulée au niveau d'une première extrémité de la plaque de liaison d'accrochage de ligne (6), et la partie arrière du composant d'accrochage de ligne (2) est montée sur une deuxième extrémité de la plaque de liaison d'accrochage de ligne (6) ; deux extrémités de la deuxième tige de liaison (7) sont respectivement articulées au niveau de la partie centrale de la première tige de liaison (5) et de la tige d'entraînement ; le tuyau d'aspiration d'air (8) est monté sur l'ensemble formant cadre de montage (4) et situé sous la plaque de liaison d'accrochage de ligne (6), le composant d'accrochage de ligne (2) peut se déplacer le long de la paroi supérieure du tuyau d'aspiration d'air (8), les extrémités du composant d'accrochage de ligne (2) ont des parties en forme de crochet (22) pour des lignes d'accrochage, et l'orifice de tuyau du tuyau d'aspiration d'air (8) est agencé vers les parties en forme de crochet (22). Le raccordement d'un cylindre (3) au composant d'accrochage de ligne (2) au moyen d'un procédé de raccordement à tige de liaison permet d'assurer que le composant d'accrochage de ligne (2) délivre rapidement des lames et que la position de sortie de lames est stable. Une lame semi-circulaire (3') est agencée à l'intérieur du pied presseur de machine à coudre, est en mesure d'assurer une coupe de ligne lisse et stable, réduit l'usure de la lame, et a des fils coupés courts.
PCT/CN2018/116154 2017-11-27 2018-11-19 Machine à coudre et son dispositif de prévention de formation de nid d'oiseau, et pied presseur de machine à coudre WO2019101033A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201721609145.7 2017-11-27
CN201721609145.7U CN207512388U (zh) 2017-11-27 2017-11-27 缝纫机及其防鸟巢装置
CN201820989118.5U CN208430303U (zh) 2018-06-26 2018-06-26 一种缝纫机压脚
CN201820989118.5 2018-06-26

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WO2019101033A1 true WO2019101033A1 (fr) 2019-05-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021208319A1 (fr) * 2020-04-17 2021-10-21 浙江沪龙科技股份有限公司 Dispositif de prévention de bouclettes à soufflage d'air et procédé d'utilisation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532065A (en) * 1967-09-20 1970-10-06 Rimoldi C Spa Virginio Thread cutting device for sewing machines
JP2001170387A (ja) * 1999-10-05 2001-06-26 Juki Corp ミシンのワイパー装置
CN204702920U (zh) * 2015-06-04 2015-10-14 浙江杜马缝纫机股份有限公司 一种新型的缝纫机压脚及防鸟巢装置
CN204738119U (zh) * 2015-06-19 2015-11-04 杰克缝纫机股份有限公司 缝纫机去除鸟巢装置
CN105544098A (zh) * 2016-01-27 2016-05-04 强信机械科技(莱州)有限公司 平缝机防鸟巢装置
CN206204567U (zh) * 2016-11-17 2017-05-31 浙江中捷缝纫科技有限公司 一种缝纫机带割线刀压脚
CN207512388U (zh) * 2017-11-27 2018-06-19 强信机械科技(莱州)有限公司 缝纫机及其防鸟巢装置
CN207567456U (zh) * 2017-10-31 2018-07-03 东莞市飞越机械有限公司 一种自动割线头及吸线头的缝纫机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532065A (en) * 1967-09-20 1970-10-06 Rimoldi C Spa Virginio Thread cutting device for sewing machines
JP2001170387A (ja) * 1999-10-05 2001-06-26 Juki Corp ミシンのワイパー装置
CN204702920U (zh) * 2015-06-04 2015-10-14 浙江杜马缝纫机股份有限公司 一种新型的缝纫机压脚及防鸟巢装置
CN204738119U (zh) * 2015-06-19 2015-11-04 杰克缝纫机股份有限公司 缝纫机去除鸟巢装置
CN105544098A (zh) * 2016-01-27 2016-05-04 强信机械科技(莱州)有限公司 平缝机防鸟巢装置
CN206204567U (zh) * 2016-11-17 2017-05-31 浙江中捷缝纫科技有限公司 一种缝纫机带割线刀压脚
CN207567456U (zh) * 2017-10-31 2018-07-03 东莞市飞越机械有限公司 一种自动割线头及吸线头的缝纫机
CN207512388U (zh) * 2017-11-27 2018-06-19 强信机械科技(莱州)有限公司 缝纫机及其防鸟巢装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021208319A1 (fr) * 2020-04-17 2021-10-21 浙江沪龙科技股份有限公司 Dispositif de prévention de bouclettes à soufflage d'air et procédé d'utilisation

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