CN108118457B - Lift presser foot height adjustment mechanism and buttonholing machine - Google Patents

Lift presser foot height adjustment mechanism and buttonholing machine Download PDF

Info

Publication number
CN108118457B
CN108118457B CN201611092351.5A CN201611092351A CN108118457B CN 108118457 B CN108118457 B CN 108118457B CN 201611092351 A CN201611092351 A CN 201611092351A CN 108118457 B CN108118457 B CN 108118457B
Authority
CN
China
Prior art keywords
presser foot
foot lifting
rod
guide rail
rail plate
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201611092351.5A
Other languages
Chinese (zh)
Other versions
CN108118457A (en
Inventor
谭炜军
严文进
蔡锦飚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bullmer Electromechanical Technology Co Ltd
Original Assignee
Bullmer Electromechanical Technology Co Ltd
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
Application filed by Bullmer Electromechanical Technology Co Ltd filed Critical Bullmer Electromechanical Technology Co Ltd
Priority to CN201611092351.5A priority Critical patent/CN108118457B/en
Publication of CN108118457A publication Critical patent/CN108118457A/en
Application granted granted Critical
Publication of CN108118457B publication Critical patent/CN108118457B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B29/00Pressers; Presser feet
    • D05B29/02Presser-control devices
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B3/00Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/06Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing for sewing buttonholes
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/02Mechanical drives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Landscapes

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

Abstract

The invention provides a presser foot lifting height adjusting mechanism which comprises a presser foot lifting height adjusting component, a presser foot lifting driving component arranged in a machine shell, a swinging rod arranged in the machine shell and provided with a first fixed swinging fulcrum, a transmission piece and a presser foot lifting executing component arranged in the machine shell, wherein a presser foot rod is arranged in the presser foot lifting executing component, the presser foot lifting driving component is connected with one end of the swinging rod and drives one end of the swinging rod to swing, the other end of the swinging rod is hinged with one end of the transmission piece, the other end of the transmission piece is connected with the presser foot lifting executing component and drives the presser foot rod to move upwards or downwards, the presser foot lifting height adjusting component acts on a hinging point of the swinging rod and the transmission piece and adjusts the height position of the hinging point of the swinging rod and the transmission piece, so that the length between the hinging point of the swinging rod and the transmission piece and the first fixed swinging fulcrum of the swinging rod is adjusted, and the swinging amplitude of the transmission piece is driven by the swinging rod is adjusted, and finally the stroke of the presser foot lifting rod is adjusted, so that the height adjustment is realized.

Description

Lift presser foot height adjustment mechanism and buttonholing machine
Technical Field
The invention relates to clothing sewing equipment, in particular to a presser foot lifting height adjusting mechanism and a buttonholing machine with the same.
Background
Buttonholing machine is one type of industrial sewing machine, belongs to special machine, and is mainly used for processing buttonholes in various clothes. Along with the continuous development of the technology, the buttonholing machine is developed towards the semi-automation and full automation direction, so that the functions of the buttonholing machine are more and more perfect, for example, the buttonholing machine can realize the functions of automatic thread cutting, automatic presser foot lifting, automatic sewing and the like. In the buttonholing machine provided with the automatic presser foot lifting mechanism, although the automatic presser foot lifting can be realized, the height of the presser foot lifting is not adjustable, so that the buttonholing machine cannot adapt to cloth with different thicknesses; for thick materials, too low a presser foot lifting height can cause the buttonholing machine to fail to work; for thin materials, too high a presser foot lifting height can also affect the working efficiency of the buttonholing machine.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a presser foot height adjusting mechanism capable of adjusting the height of the presser foot, thereby being applicable to cloth materials of different thicknesses and improving working efficiency.
In order to achieve the above purpose, the invention provides a presser foot lifting height adjusting mechanism which is arranged in a machine shell, wherein the presser foot lifting height adjusting mechanism comprises a presser foot lifting height adjusting component, a presser foot lifting driving component arranged in the machine shell, a swinging rod which is arranged in the machine shell and provided with a first fixed swinging fulcrum, a transmission piece which extends along the length direction of the machine shell, and a presser foot lifting executing component arranged in the machine shell, the presser foot lifting executing component is provided with a presser foot rod, the presser foot lifting driving component is connected with one end of the swinging rod and drives one end of the swinging rod to swing, the other end of the swinging rod is hinged with one end of the transmission piece, the other end of the transmission piece is connected with the presser foot lifting executing component and drives the presser foot rod to move upwards or downwards, and the presser foot lifting height adjusting component acts on the hinging point of the swinging rod and the transmission piece and adjusts the height position of the hinging point of the swinging rod and the transmission piece.
Further, lift presser foot altitude mixture control subassembly includes but the guide rail board of reciprocates, is used for driving guide rail board reciprocating's operating element and connecting pin, the guide rail board has parallel arrangement's first guide rail board arm and second guide rail board arm, the operating element is connected with first guide rail board arm, the one end of second guide rail board arm, driving medium and the other end of pendulum rod pass through the connecting pin is articulated mutually, set up the first spout that extends along the length direction of pendulum rod in the pendulum rod, the second spout that extends along second guide rail board arm length direction is seted up to second guide rail board arm, the connecting pin wears to establish in first spout and second spout.
Further, lift presser foot altitude mixture control subassembly still includes the mounting bracket, and this mounting bracket includes the mounting bracket fixed part that is fixed mutually with the casing to and set up the mounting bracket guide part of the first guide way that extends from top to bottom, the guide rail board still has the guide rail board body portion that is located between first guide rail board arm and the second guide rail board arm, be fixed with guide bolt on the guide rail board body portion, guide bolt wears to establish in the first guide way of mounting bracket guide part.
Preferably, the operation member is an adjusting knob rotatably mounted on the casing, the adjusting knob includes an eccentric shaft portion eccentrically disposed, a third sliding groove extending along the length direction of the arm portion of the first guide rail plate is formed in the arm portion of the first guide rail plate, and the eccentric shaft portion is inserted into the third sliding groove.
Further, the presser foot lifting driving assembly comprises a rotating piece with a cam peripheral surface, a driving crank with a second fixed swinging fulcrum, a roller, an adapter and a fixing pin fixed at one end of the swinging rod; the adaptor includes an adaptor body portion, and an adaptor shaft portion extending vertically downward from a lower end of the adaptor body portion; the rotating member is directly or indirectly driven to rotate by a power source, the roller is rotatably connected to one end of the driving crank and abuts against the peripheral surface of the cam of the rotating member, the shaft portion of the adapter is rotatably and axially movably arranged at the other end of the driving crank in a penetrating manner, and the fixing pin is rotatably and axially movably arranged in the adapter body in a penetrating manner.
Preferably, the power source is a driving motor vertically installed in the casing.
Preferably, a torsion spring is provided at the lower end of the driving crank, and the torsion spring makes the roller closely contact with the cam circumferential surface of the rotating member.
Further, the presser foot lifting execution assembly comprises a presser foot lifting swinging rod with a third fixed swinging fulcrum, a presser foot lifting connecting rod, a guide plate fixed to the machine shell and a support, wherein a second guide groove extending up and down is formed in the guide plate, a protruding sliding block is arranged on the support, the presser foot rod is fixed in the support, the other end of the transmission piece is hinged with one end of the presser foot lifting swinging rod, the other end of the presser foot lifting swinging rod is hinged with the upper end of the presser foot lifting connecting rod, the lower end of the presser foot lifting connecting rod is hinged with the sliding block, and the sliding block is located in the second guide groove of the guide plate and can slide up and down in the second guide groove.
Preferably, an adjusting groove extending up and down is formed in the presser foot lifting connecting rod, and the presser foot lifting swinging rod is hinged with the presser foot lifting connecting rod through an axial screw penetrating through the adjusting groove; the presser foot bar is sleeved with a pressure spring, and the upper end and the lower end of the pressure spring are respectively abutted against the machine shell and the bracket.
The invention also provides a buttonholing machine which comprises a machine shell, wherein the machine shell is internally provided with the presser foot lifting height adjusting mechanism.
As described above, the presser foot lifting height adjusting mechanism and buttonholing machine provided by the invention have the following beneficial effects:
in this application, through lifting the high low position of the pin joint of presser foot altitude mixture control subassembly regulation pendulum rod and driving medium to adjust the length between the pin joint of pendulum rod and driving medium and the first fixed swing fulcrum of pendulum rod, and then adjust the size that the pendulum rod drove driving medium swing range, finally adjust the stroke that the presser foot pole moved up or moved down in the driving medium drive lifted the presser foot execution unit, realize lifting presser foot altitude mixture control, make lift presser foot mechanism can be applicable to the cloth of different thickness, and then guarantee buttonholing machine normal operating, and have higher work efficiency.
Drawings
Fig. 1 is a schematic structural view of a buttonholing machine in the present application.
Fig. 2 and fig. 3 are schematic structural views of the presser foot lifting height adjusting mechanism in the present application under different viewing angles.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic structural view of the presser foot lifting driving assembly in fig. 3.
Fig. 6 is a schematic structural view of the presser foot lifting execution assembly in fig. 3.
Fig. 7 is a schematic diagram of a presser foot height adjustment mechanism in the present application.
Figures 8 and 9 illustrate different embodiments of the lift foot height adjustment assembly of figure 7.
Fig. 10 is a side view of fig. 9.
Fig. 11 and 12 show different embodiments of the rotor of fig. 3.
Fig. 13 is a schematic structural view of an adjusting knob capable of being quickly engaged and disengaged in the present application.
Fig. 14 and 15 are exploded views of fig. 13.
Fig. 16-18 illustrate various embodiments of the retention tab of fig. 13.
Description of element reference numerals
10. Guide plate of casing 64
101. Second guide groove of tail 641
102. Nose 65 support
20. Slide block of driving motor 651
30. Presser foot lifting driving assembly 66 axial screw
31. Rotating member 70 lifts presser foot height adjustment assembly
311. Cam peripheral surface 71 guide rail plate
312. Cam groove 711 first rail plate arm
313. First arc segment 712 second rail plate arm
314. Second arc section 713 rail plate body portion
315. Third arc segment 714 second chute
32. Third slide way of driving crank 715
321. Connecting pin for crank body 72
322. First crank arm 73 mounting bracket
323. Second crank arm 731 mounting bracket fixing portion
33. Roller 732 mounting frame guide
34. First guide groove of adapter 733
341. Guide bolt for adapter body part 74
342. Adapter shaft 80 adjustment knob
35. Fixed pin 81 adjusting limiting plate
36. Motor mounting plate 811 limit hole
37. Balance bar pin 812 stop pin
38. Torsion spring 82 rotation shaft
39. Screw 83 knob
40. Swing link 831 guide shaft part
41. First chute 84 adjusting wheel
42. Eccentric shaft portion of retainer 841
50. Driving part 842 limit bolt
60. Gear part of presser foot lifting execution assembly 843
61. Polygonal portion of presser foot bar 844
62. Spring of presser foot lifting swinging rod 85
63. Presser foot lifting connecting rod 86 scale plate
631. Through hole of adjusting groove 861
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
In the following examples, the directions are defined as follows: the longitudinal direction of the buttonholing machine is defined as the left-right direction, the width direction of the buttonholing machine is defined as the front-rear direction, and the height direction of the buttonholing machine is defined as the up-down direction.
The application provides a lift presser foot height adjustment mechanism, as shown in fig. 1, installed in a casing 10 of a buttonholing machine, the casing 10 is provided with a machine tail 101 and a machine head 102, wherein the machine tail 101 is positioned at the left end of the casing 10, and the machine head 102 is positioned at the right end of the casing 10. As shown in fig. 2 and 3, the presser foot lifting height adjusting mechanism comprises a presser foot lifting height adjusting assembly 70, a presser foot lifting driving assembly 30 installed in the machine tail 101, a swing rod 40 installed in the machine tail 101 and provided with a first fixed swing pivot O1, a transmission member 50 extending leftwards and rightwards along the length direction of the machine shell 10, and a presser foot lifting executing assembly 60 installed in the machine head 102; the swing rod 40 extends vertically, the swing rod 40 is rotatably connected to the casing 10 through a fixing pin extending back and forth, or the swing rod 40 is rotatably connected to a fixing plate through a fixing pin extending back and forth, and the fixing plate is fixed to the casing 10, so the fixing pin is a first fixed swing fulcrum O1 of the swing rod 40; the presser foot lifting executing assembly 60 is provided with a vertically extending presser foot bar 61, and the lower end of the presser foot bar 61 extends downwards from the casing 10 and is fixedly provided with a presser foot; the presser foot lifting driving assembly 30 is connected with the lower end of the swing rod 40, drives the lower end of the swing rod 40 to swing, the upper end of the swing rod 40 is hinged with the left end of the transmission member 50, and the right end of the transmission member 50 is connected with the presser foot lifting executing assembly 60, and drives the presser foot bar 61 to move upwards or downwards, so that upward presser foot lifting or downward presser foot releasing can be realized; the presser foot lifting height adjusting assembly 70 acts on the hinge point of the swing rod 40 and the transmission piece 50 and adjusts the height position of the hinge point of the swing rod 40 and the transmission piece 50. In the presser foot lifting height adjusting mechanism, except for the presser foot lifting height adjusting assembly 70, the presser foot lifting driving assembly 30, the swinging rod 40, the transmission piece 50 and the presser foot lifting executing assembly 60 form a presser foot lifting driving mechanism of the buttonholing machine.
In the above-mentioned presser foot lifting height adjusting mechanism, the height position of the hinge point of the swing rod 40 and the transmission member 50 is adjusted by the presser foot lifting height adjusting assembly 70, so as to adjust the length between the hinge point of the swing rod 40 and the transmission member 50 and the first fixed swing pivot O1 of the swing rod 40, further adjust the swing amplitude of the transmission member 50 driven by the swing rod 40, finally adjust the stroke of the presser foot lifting rod 61 in the transmission member 50 driving presser foot lifting executing assembly 60 to move up or down, so as to realize the presser foot lifting height adjustment, and make the presser foot lifting driving mechanism applicable to fabrics with different thicknesses, thereby ensuring that the buttonhole machine can work normally and have higher working efficiency. Specifically, after the adjustment of the height of the presser foot is finished, in the operation process of the buttonholing machine, the presser foot lifting driving assembly 30 drives the lower end of the swing rod 40 to swing, so that the upper end of the swing rod 40 also swings; when the hinge point of the swing rod 40 and the transmission member 50 is located at a high position by the presser foot lifting height adjusting assembly 70, the length between the hinge point of the swing rod 40 and the transmission member 50 and the first fixed swing pivot point O1 of the swing rod 40 is longer, so that the swing amplitude of the upper end of the swing rod 40 is larger, the stroke of the presser foot lifting rod 61 in the presser foot lifting executing assembly 60 driven by the transmission member 50 is increased, and the presser foot lifting executing assembly is suitable for thin materials; when the hinge point between the swing rod 40 and the transmission member 50 is located at the low position by the presser foot lifting height adjusting assembly 70, the length between the hinge point between the swing rod 40 and the transmission member 50 and the first fixed swing pivot O1 of the swing rod 40 is shorter, so that the swing amplitude of the upper end of the swing rod 40 is smaller, and the stroke of the presser foot lifting rod 61 in the presser foot lifting executing assembly 60 driven by the swing rod 40 through the transmission member 50 is reduced, so that the presser foot lifting device is suitable for thick materials.
In the above-mentioned presser foot lifting height adjusting mechanism, the transmission member 50 may be a connecting rod, or may be a wire rope, and in the presser foot lifting height adjusting mechanism shown in fig. 2 and 3, the transmission member 50 is a transmission connecting rod.
Further, as shown in fig. 2 to 4, the presser foot lifting height adjusting assembly 70 includes a guide rail plate 71 which is movable up and down, an operating member for driving the guide rail plate 71 to move up and down, and a connecting pin 72 which extends forward and backward; the rail 71 has a first rail arm 711 and a second rail arm 712 arranged in parallel, and the first rail arm 711 and the second rail arm 712 extend laterally along the longitudinal direction of the casing 10, so that the first rail arm 711 and the second rail arm 712 are arranged in front-rear opposition; the operation member is connected to the first rail plate arm 711 and drives the first rail plate arm 711 to move up and down; the second rail plate arm 712, the left end of the driving member 50, and the upper end of the swing link 40 are hinged by the connecting pin 72, so the connecting pin 72 is a hinge point between the swing link 40 and the driving member 50, the swing link 40 is provided with a first chute 41 extending up and down along the length direction of the swing link 40, the second rail plate arm 712 is provided with a second chute 714 extending left and right along the length direction of the second rail plate arm 712, and the connecting pin 72 is inserted into the first chute 41 and the second chute 714; the front end of the connecting pin 72 is also fixed with a retainer ring 42 located on the front side of the second rail plate arm 712. When the first rail plate arm 711 is moved up and down by the operating member, the rail plate 71 moves up and down as a whole, so that the second rail plate arm 712 of the rail plate 71 also moves up and down synchronously, thereby driving the hinge points of the swing link 40, the transmission member 50 and the second rail plate arm 712 to also move up and down synchronously, that is, adjusting the positions of the connecting pins 72 in the first sliding groove 41 and the second sliding groove 714, that is, adjusting the distance between the connecting pins 72 and the first fixed swing fulcrum O1 of the swing link 40.
Preferably, as shown in fig. 2 to 4, the presser foot lifting height adjusting assembly 70 further includes a mounting bracket 73, the mounting bracket 73 includes a mounting bracket fixing portion 731 fixed to the top of the casing 10, and a mounting bracket guide portion 732 provided with a first guide groove 733 extending up and down, the guide rail plate 71 further has a guide rail plate body portion 713 between the first guide rail plate arm portion 711 and the second guide rail plate arm portion 712, so that the guide rail plate body portion 713 extends forward and backward in the width direction of the casing 10, the first guide rail plate arm portion 711 is located at a front end of the guide rail plate body portion 713, and the second guide rail plate arm portion 712 is located at a rear end of the guide rail plate body portion 713; the guide bolts 74 are fixed on the guide rail plate body 713, the guide bolts 74 are inserted into the first guide grooves 733 of the mounting frame guide parts 732, the heads of the guide bolts 74 are positioned outside the first guide grooves 733, the guide bolts 74 form the tracks of the guide rail plate 71, and the accuracy and stability of the operation member driving the guide rail plate 71 to move up and down can be improved through the mutual matching of the guide bolts 74 and the first guide grooves 733, so that the accuracy and precision of the height adjustment of the presser foot are improved.
Preferably, as shown in fig. 2 to 4, the operating member is an adjusting knob 80 rotatably mounted on the casing 10, the adjusting knob 80 includes an eccentric shaft portion 841 eccentrically disposed, that is, the eccentric shaft portion 841 is eccentric to the rotation axis of the adjusting knob 80, the first rail plate arm 711 is provided with a third sliding groove 715 extending leftwards and rightwards along the length direction of the first rail plate arm 711, and the eccentric shaft portion 841 is penetrated in the third sliding groove 715. When the adjusting knob 80 is turned, the eccentric shaft 841 drives the first rail plate arm 711 to move up and down, and the eccentric shaft 841 also slides left and right in the third sliding groove 715, so as to adjust the height of the hinge point of the swing rod 40 and the transmission member 50, thereby realizing the height adjustment of the presser foot.
Further, in this embodiment, in order to improve the operation convenience and the self-locking reliability of the adjusting knob 80, the adjusting knob 80 is a fast-clutch adjusting knob 80, which is installed on the front wall of the casing 10, as shown in fig. 1 and 13 to 15, and the fast-clutch adjusting knob 80 includes an adjusting limiting plate 81 fixed on the inner wall of the casing 10, a rotating shaft 82 extending back and forth along the width direction of the casing 10, a knob 83 fixed at the front end of the rotating shaft 82, an adjusting wheel 84 fixed at the rear end of the rotating shaft 82, and a spring 85 located between the knob 83 and the adjusting limiting plate 81; the rotating shaft 82 is rotatably arranged in the machine shell 10 and the adjusting limiting plate 81 in a penetrating way; the spring 85 extends axially along the front-rear direction and is in a compressed state, so the spring 85 is a compression spring; the knob 83, the spring 85, the adjusting limiting plate 81 and the adjusting wheel 84 are sequentially arranged from front to back, the knob 83 and the spring 85 are positioned outside the machine shell 10, the adjusting limiting plate 81 and the adjusting wheel 84 are positioned inside the machine shell 10, and the eccentric shaft 841 is arranged on the rear end surface of the adjusting wheel 84, which is opposite to the adjusting limiting plate 81; furthermore, a forward protruding limit protrusion is provided on the front end surface of the adjusting wheel 84 facing the adjusting limit plate 81, and a limit recess facing the adjusting wheel 84 and cooperating with the limit protrusion is provided on the rear end surface of the adjusting limit plate 81. When the knob 83 is pressed backward, the knob 83 drives the adjusting wheel 84 to move backward synchronously through the rotating shaft 82, so that the limit protruding part on the adjusting wheel 84 is separated from the limit recessed part on the adjusting limit plate 81, at this time, the operator rotates the knob 83 to drive the adjusting wheel 84 to rotate synchronously through the rotating shaft 82, and the height position of the eccentric shaft 841 is changed, so that the guide rail plate 71 is driven to move up or down synchronously, and the height adjustment of the presser foot lifting is completed. After the height adjustment of the presser foot is finished, the knob 83 is loosened, and because the spring 85 is in a compressed state, the spring 85 applies a forward acting force to the knob 83, the knob 83 moves forward to reset under the acting force of the spring 85, and then the knob 83 drives the adjusting wheel 84 to synchronously move forward to reset through the rotating shaft 82, so that the limit protruding part on the adjusting wheel 84 is matched with the limit concave part on the adjusting limit plate 81, the adjusting wheel 84 cannot rotate, the adjusting knob 80 is self-locked, and the knob 83 cannot rotate, so that the height of the presser foot cannot be adjusted. Therefore, the adjusting knob 80 can quickly realize the separation and reunion between the adjusting wheel 84 and the adjusting limiting plate 81 by pressing or loosening the knob 83, and when the knob 83 is loosened, the whole adjusting knob 80 is in a self-locking state by matching the limiting protruding part on the adjusting wheel 84 with the limiting concave part on the adjusting limiting plate 81, so that the self-locking is reliable and stable, and the presser foot lifting height adjusting mechanism can reliably operate after the presser foot height adjustment is finished; in addition, when the adjusting knob 80 is used for adjusting the height of the presser foot, the knob 83 is only required to be pressed and turned, so that the operation is simple and quick.
Further, as shown in fig. 13 to 15, the device further comprises a scale disc 86 fixed on the casing 10 and located outside the casing 10, so that the scale disc 86 is located between the knob 83 and the adjusting limiting plate 81, and the scale disc 86 is further provided with a through hole 861 for allowing the spring 85 and the rotating shaft 82 to pass through; the front surface of the scale dial 86 is provided with a scale for indicating the height of the presser foot, when the knob 83 is pressed backwards and rotated, the pointer on the knob 83 is aligned with a scale on the scale dial 86, and then the knob 83 is loosened, the pointer on the knob 83 is aligned with a new scale, the whole presser foot lifting height adjusting assembly 70 also realizes self-locking, and the operation of the presser foot lifting height adjustment is facilitated for operators. Preferably, the scale plate 86, the casing 10, and the adjusting limiting plate 81 are fixed by a plurality of fixing screws extending back and forth; the knob 83 is fixed to the rotating shaft 82, and the rotating shaft 82 and the adjusting wheel 84 are fixed by a plurality of fixing screws extending radially along the rotating shaft 82.
Preferably, as shown in fig. 14, a rearward extending guiding shaft 831 is provided on a rear end surface of the knob 83 facing the adjusting limiting plate 81, the spring 85 is sleeved on the rotating shaft 82, and a front end of the spring 85 is sleeved on the guiding shaft 831 of the knob 83, and a rear end of the spring 85 abuts against a front end surface of the casing 10, so that accuracy of forward movement and resetting of the knob 83 by the spring 85 after the knob 83 is released is improved.
In this application, the limit protrusion of the adjusting wheel 84 and the limit recess of the adjusting limit plate 81 have various forms: form one of the limit protrusion and the limit recess, as shown in fig. 14 and 15, the limit protrusion on the adjusting wheel 84 is a limit latch 842 extending forward, and the limit recess on the adjusting limit plate 81 is a plurality of limit holes 811; when the knob 83 is released, an end of the limit plug 842 is inserted into one of the limit holes 811, thereby restricting rotation of the adjustment wheel 84 and the knob 83; preferably, the adjusting limiting plate 81 is provided with two blocking pins 812 extending backward towards the rear end face of the adjusting wheel 84, the two blocking pins 812 are respectively located at two ends of the limiting recess, that is, the plurality of limiting holes 811 are located between the two blocking pins 812, and in the process that the knob 83 drives the adjusting wheel 84 to rotate, the blocking pins 812 are used for limiting the rotation of the limiting plug 842 on the adjusting wheel 84, so that the limiting plug 842 can only rotate within the range with the limiting holes 811, and the rotation range of the knob 83 is limited. As shown in fig. 16, the second form of the limiting protrusion and the limiting recess is a gear portion 843, and the limiting recess on the adjusting plate 81 is a gear groove adapted to the gear portion 843; when the knob 83 is released, the gear portion 843 is located in the gear groove, thereby restricting the rotation of the adjustment wheel 84 and the knob 83. As shown in fig. 17 or 18, the limiting protrusion on the adjusting wheel 84 is a polygonal portion 844, and the limiting recess on the adjusting limiting plate 81 is a polygonal groove adapted to the polygonal portion 844; when the knob 83 is released, the polygonal portion 844 is positioned in the polygonal groove, thereby restricting rotation of the adjustment wheel 84 and the knob 83; preferably, the limit protrusion on the adjusting wheel 84 is a regular polygon, and the limit recess on the adjusting limit plate 81 is a regular polygon groove adapted to the regular polygon 844. Of course, the limit protrusion and the limit recess may also take other forms such as splines.
Further, as shown in fig. 4 and 5, the presser foot lifting driving assembly 30 includes a rotating member 31 having a cam circumferential surface 311, a driving crank 32 having a second fixed swing fulcrum O2, a roller 33, an adapter 34, and a fixing pin 35 fixed at the lower end of the swing lever 40; the fixing pin 35 extends back and forth in the width direction of the casing 10; the adapter 34 includes an adapter body portion 341, and an adapter shaft portion 342 extending vertically downward from a lower end of the adapter body portion 341; the rotating member 31 is directly or indirectly driven to rotate by a power source, the roller 33 is rotatably connected to one end of the driving crank 32 and abuts against the cam circumferential surface 311 of the rotating member 31, the adaptor shaft 342 is rotatably and axially movably inserted into the rear end of the driving crank 32, and the fixing pin 35 is rotatably and axially movably inserted into the adaptor body 341.
In this embodiment, the power source is a driving motor 20 vertically installed in the tail 101, so it may be built in the casing 10, and further the presser foot lifting driving mechanism of the buttonholing machine may be integrally built in the casing 10 of the buttonholing machine, so as to simplify the overall structure of the presser foot lifting driving mechanism, reduce the occupation space thereof, and greatly improve the overall aesthetic property of the buttonholing machine. In addition, after the driving motor 20 is vertically installed and is built in the casing 10, the driving motor 20 is adopted by the power sources of other mechanisms (such as an upper thread cutting mechanism and a lower thread cutting mechanism) in the buttonholing machine conveniently, namely, the presser foot lifting driving mechanism and the other mechanisms can share one driving motor 20 and the same motor shaft, so that the cost of the whole buttonholing machine is reduced.
The driving motor 20 may be directly connected to the rotating member 31 to directly drive the rotating member 31 to rotate; the driving motor 20 may be indirectly connected to the rotating member 31 through a gear, a timing belt, or other transmission mechanism, to indirectly drive the rotating member 31 to rotate; in this embodiment, the rotating member 31 is fixed on the output shaft of the driving motor 20, so the driving motor 20 directly drives the rotating member 31 to rotate. The driving motor 20 may be directly fixed to the casing 10, or may be fixed by providing a motor mounting plate 36; in this embodiment, as shown in fig. 2 to 4, a motor mounting plate 36 fixed to the casing 10 is disposed in the tail portion 101 of the casing 10, the driving motor 20 is vertically fixed on the lower end surface of the motor mounting plate 36, and an output shaft of the driving motor 20 extending vertically passes through the motor mounting plate 36 upwards and is fixed in the rotating member 31, so that the rotating member 31 is rotatably supported on the upper end surface of the motor mounting plate 36; the fixing plate for mounting the swing link 40 is located at the rear side of the motor mounting plate 36. Further, as shown in fig. 4, the driving crank 32 includes a crank body 321, a first crank arm portion 322 extending substantially forward from the outer periphery of the crank body 321, and a second crank arm portion 323 extending substantially rearward from the outer periphery of the crank body 321, the crank body 321 of the driving crank 32 is rotatably connected to the motor mounting plate 36 by a vertically extending rocker pin 37, so that the rocker pin 37 forms a second fixed pivot point O2 of the driving crank 32, the roller 33 is rotatably connected to the front end of the first crank arm portion 322 of the driving crank 32 by a vertically extending screw 39, and the adapter shaft portion 342 of the adapter 34 is rotatably and vertically axially movably penetrating the rear end of the second crank arm portion 323 of the driving crank 32. The lower extreme of drive crank 32 is equipped with a torsional spring 38, the both ends of torsional spring 38 are connected in second crank arm 323 and motor mounting panel 36 respectively, and torsional spring 38 is used for exerting an effort to drive crank 32 for the front end of drive crank 32 is close to rotor 31, thereby makes the roller 33 of drive crank 32 front end hug closely in the cam global 311 of rotor 31 all the time, guarantees the accuracy and the reliability of force transmission.
Further, as shown in fig. 11, the rotating member 31 is directly a cam, and the outer peripheral surface of the cam constitutes the cam peripheral surface 311. Alternatively, as shown in fig. 12, the rotating member 31 is a cylinder, the outer circumferential surface of the cylinder is provided with a cam groove 312, the groove circumferential surface of the cam groove 312 forms the cam circumferential surface 311, and in order to realize that the other mechanism of the buttonholing machine and the presser foot lifting mechanism share one driving motor 20, the rotating member 31 is preferably in a cylinder shape, and by combining the structure that the driving motor 20 and the rotating member 31 are both built in the casing 10, the other mechanism of the buttonholing machine can be conveniently driven by providing grooves on the upper end surface and the lower end surface of the rotating member 31.
Further, as shown in fig. 4 and 6, the presser foot lifting and pressing execution assembly 60 includes a presser foot lifting and pressing swinging rod 62 having a third fixed swinging fulcrum O3, a presser foot lifting and pressing connecting rod 63, a guide plate 64 fixed to the casing 10, and a bracket 65, wherein a second guide groove 641 extending up and down is formed in the guide plate 64; a slide block 651 protruding forwards is arranged on the front end surface of the bracket 65, and the presser foot bar 61 is fixed in the bracket 65; the presser foot lifting and lowering swinging rod 62 is substantially L-shaped, the right end of the transmission member 50 is hinged to the upper end of the left side of the presser foot lifting and lowering swinging rod 62, the lower end of the right side of the presser foot lifting and lowering swinging rod 62 is hinged to the upper end of the presser foot lifting and lowering connecting rod 63, the lower end of the presser foot lifting and lowering connecting rod 63 is hinged to the slider 651, and the slider 651 is located in the second guide groove 641 of the guide plate 64 and can slide up and down in the second guide groove 641, namely, the presser foot lifting and lowering swinging rod 62, the presser foot lifting and lowering connecting rod 63, the bracket 65 with the slider 651, and the guide plate 64 with the second guide groove 641 form a crank slider mechanism. The transmission member 50 is hinged to the presser foot lifting/lowering swing lever 62, and the presser foot lifting/lowering swing lever 62 and the presser foot lifting/lowering link 63 are each hinged to each other by an axial screw 66 extending in the front-rear direction.
Preferably, as shown in fig. 4 and 6, the presser foot lifting link 63 is provided with an adjusting slot 631 extending up and down, and the axial screw 66 for hinging the presser foot lifting swing lever 62 and the presser foot lifting link 63 is inserted into the adjusting slot 631; the presser bar 61 is sleeved with a compression spring, which is not shown in the drawing, and the upper and lower ends of the compression spring respectively abut against the casing 10 and the bracket 65. In the process of lifting and releasing the presser foot, the presser foot is not contacted with the cloth, so that the pressure of the pressure spring fully acts on the bracket 65, and the axial screw 66 penetrating through the adjusting groove 631 always abuts against the upper edge of the adjusting groove 631, thereby accurately executing the presser foot lifting action and the presser foot releasing action. When the presser foot is put down, the presser foot contacts with the cloth, and the pressure of the pressure spring is borne by the cloth and the needle plate, so that the axial screw 66 penetrating the adjusting groove 631 is loosened from the upper edge of the adjusting groove 631. Since the adjusting groove 631 is a vertically extending elongated groove, it enables the presser foot lifting driving mechanism to be adapted to different thickness cloths, and also facilitates adjustment of the stroke of the presser foot bar 61 to move up or down.
Fig. 7 is a schematic diagram of the presser foot height adjusting mechanism in the present application, which is compared with the structure diagrams of the presser foot height adjusting mechanism shown in fig. 2 to 4, the driving crank 32 is K-J-I, the adapter 34 is I-H, the swing bar 40 is H-G-F, the connecting pin 72 is F, the second chute 714 on the arm 712 of the second guide rail plate is F-M, the mounting bracket 73 is P-Q, the adjusting knob 80 is O-N, the knob 83 in the adjusting knob 80 is O, the eccentric shaft 841 in the adjusting knob 80 is N, the transmission member 50 is F-E, the presser foot lifting swing plate is E-a-B, the presser foot lifting link 63 is B-C, the presser foot bar 61 is C-D, the presser foot J is the second fixed swing pivot O2 of the driving crank 32, G is the first fixed swing pivot O1 of the swing bar 40, and a is the third fixed swing pivot O3 of the presser foot lifting swing bar 62. As can be seen from fig. 7: when the swing link 40 (H-G-F) swings driven by the driving crank 32 (K-J-I) and the adapter 34 (I-H), the connection pin 72 (F) can slide along the second slide groove 714 (F-M); the height of the guide rail plate 71 where the second sliding groove 714 (F-M) is located can move up and down along the mounting frame 73 (P-Q) through the adjusting knob 80 (O-N), when the guide rail plate 71 where the second sliding groove 714 (F-M) is located is in a high position, F-G is longer, the swing amplitude of the F point is also larger, and the transmission member 50 (F-E) drives the presser foot bar 61 (C-D) to move up or down to form larger, so that the presser foot lifting height is higher; conversely, when the guide rail plate 71 where the second chute 714 (F-M) is located is in the low position, F-G is shorter, and the swing amplitude of the point F is smaller, the formation that the transmission member 50 (F-E) drives the presser foot bar 61 (C-D) to move up or down is smaller, and the height of the presser foot is lower; after the adjustment is finished, the N point is locked, the height of the presser foot is kept fixed, or the heights of the N point and the F-M are changed only when the height of the presser foot is required to be adjusted, and the heights of the N point and the F-M are kept fixed in the rest states. The shape of the second chute 714 (F-M) may be an arc, spline, straight line or oblique line, as long as the presser foot lifting height adjusting mechanism can meet the use requirement. The connecting pin 72F may be in direct contact with the groove wall of the second sliding groove 714 (F-M) on the second rail plate arm 712, or may be in indirect contact by sleeving a rotatable slider on the outer periphery of the connecting pin 72.
Further, in the schematic diagram of the presser foot lifting height adjustment mechanism shown in fig. 7, the height position of the guide rail plate 71 where the second chute 714F-M is located is controlled by the external action point N, and the controlled manner of the point N in the presser foot lifting height adjustment assembly 70 shown in fig. 7 is: by means of the eccentric shaft portion 841 of the adjustment knob 80, which may also be realized in other ways; such as: in the presser foot height adjustment assembly 70 shown in fig. 8, the controlled manner of point N is: realized by thread adjustment; alternatively, in the presser foot height adjustment assembly 70 shown in fig. 9 and 10, the controlled manner of point N is: the height adjustment of the presser foot is realized by realizing the T-O-N of the spanner, wherein O is a fixed swinging fulcrum of the spanner, the T end is positioned outside the shell 10, and the N end of the spanner can be driven to move upwards or downwards by pulling the T end of the spanner.
Further, as shown in fig. 4 and 7, the rotating member 31 has a rotation center L, the cam circumferential surface 311 on the rotating member 31 includes a first arc segment 313 with a constant diameter, a second arc segment 314 with a gradually increasing diameter, and a third arc segment 315 with a gradually decreasing diameter, the second arc segment 314 and the third arc segment 315 are eccentric to the rotation center L of the rotating member 31, that is, the second arc segment 314 and the third arc segment 315 are eccentric to the output shaft of the driving motor 20, the first arc segment 313 is concentrically arranged with the output shaft of the driving motor 20, the first arc segment 313, the second arc segment 314 and the third arc segment 315 are sequentially connected, and the second arc segment 314 and the third arc segment 315 are symmetrically arranged. When the roller 33 contacts the first arc section 313 of the cam circumferential surface 311, the drive crank 32 is not operated, and the presser foot is in a lowered state, in which the buttonholing machine performs a sewing operation and a thread cutting operation. When the roller 33 contacts with the second arc section 314 of the cam circumferential surface 311, the driving crank 32 swings clockwise around the second fixed swinging fulcrum O2, the driving crank 32 drives the swinging rod 40 to swing anticlockwise around the first fixed swinging fulcrum O1 through the adapter 34, the swinging rod 40 drives the presser foot lifting swinging rod 62 to swing anticlockwise around the third fixed swinging fulcrum O3 through the transmission piece 50, the presser foot lifting connecting rod 63 and the bracket 65 are driven to move upwards together under the interaction of the second guide groove 641 and the sliding block 651, and the presser foot rod 61 and the presser foot are driven to move upwards synchronously, so that the presser foot is lifted. When the roller 33 contacts with the third arc section 315 of the cam circumferential surface 311, the driving crank 32 swings anticlockwise around the second fixed swinging fulcrum O2, the driving crank 32 drives the swinging rod 40 to swing clockwise around the first fixed swinging fulcrum O1 through the adapter 34, the swinging rod 40 drives the presser foot lifting swinging rod 62 to swing clockwise around the third fixed swinging fulcrum O3 through the transmission piece 50, the presser foot lifting connecting rod 63 and the bracket 65 are driven to move downwards together under the interaction of the second guide groove 641 and the sliding block 651, and the presser foot rod 61 and the presser foot are driven to move downwards synchronously, so that the presser foot is released. Thus, the first arc segment 313 is a presser foot lifting idle stroke segment, the second arc segment 314 is a presser foot lifting idle stroke segment, and the third arc segment 315 is a presser foot releasing idle stroke segment.
The application also provides a buttonholing machine, as shown in fig. 1, which comprises a machine shell 10, wherein the machine shell 10 is internally provided with the presser foot lifting height adjusting mechanism.
To sum up, the presser foot height adjusting mechanism and the buttonholing machine effectively achieve the height adjustment of the presser foot, are applicable to thin materials and thick materials, facilitate actual production, and are simple and compact in overall structure, convenient to adjust and low in cost. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (9)

1. The utility model provides a lift presser foot height adjustment mechanism installs in casing (10), its characterized in that: the presser foot lifting height adjusting mechanism comprises a presser foot lifting height adjusting assembly (70), a presser foot lifting driving assembly (30) arranged in a machine shell (10), a swinging rod (40) arranged in the machine shell (10) and provided with a first fixed swinging fulcrum (O1), a transmission piece (50) extending along the length direction of the machine shell (10), and a presser foot lifting executing assembly (60) arranged in the machine shell (10), wherein the presser foot lifting executing assembly (60) is provided with a presser foot rod (61), the presser foot lifting driving assembly (30) is connected with one end of the swinging rod (40) and drives one end of the swinging rod (40) to swing, the other end of the swinging rod (40) is hinged with one end of the transmission piece (50), the other end of the transmission piece (50) is connected with the presser foot lifting executing assembly (60) and drives the presser foot rod (61) to move upwards or downwards, and the presser foot lifting height adjusting assembly (70) acts on the hinging point of the swinging rod (40) and the transmission piece (50) and the hinging point of the adjusting swinging rod (40) and the transmission piece (50); the presser foot lifting height adjusting assembly (70) comprises a guide rail plate (71) capable of moving up and down, an operating member for driving the guide rail plate (71) to move up and down, and a connecting pin (72), wherein the guide rail plate (71) is provided with a first guide rail plate arm part (711) and a second guide rail plate arm part (712) which are arranged in parallel, the operating member is connected with the first guide rail plate arm part (711), one end of the second guide rail plate arm part (712), one end of a transmission member (50) and the other end of a swinging rod (40) are hinged through the connecting pin (72), a first sliding groove (41) extending along the length direction of the swinging rod (40) is formed in the swinging rod (40), a second sliding groove (714) extending along the length direction of the second guide rail plate arm part (712) is formed in the second guide rail plate arm part (712), and the connecting pin (72) is arranged in the first sliding groove (41) in a penetrating mode.
2. The presser foot elevation adjustment mechanism of claim 1 wherein: the presser foot lifting height adjusting assembly (70) further comprises a mounting frame (73), the mounting frame (73) comprises a mounting frame fixing portion (731) fixed with the machine shell (10) and a mounting frame guide portion (732) provided with a first guide groove (733) extending up and down, the guide rail plate (71) further comprises a guide rail plate body portion (713) located between the first guide rail plate arm portion (711) and the second guide rail plate arm portion (712), a guide bolt (74) is fixed on the guide rail plate body portion (713), and the guide bolt (74) is arranged in the first guide groove (733) of the mounting frame guide portion (732) in a penetrating mode.
3. The presser foot elevation adjustment mechanism of claim 1 wherein: the operation piece is an adjusting knob (80) rotatably mounted on the casing (10), the adjusting knob (80) comprises an eccentric shaft portion (841) eccentrically arranged, a third sliding groove (715) extending along the length direction of the first guide rail plate arm portion (711) is formed in the first guide rail plate arm portion (711), and the eccentric shaft portion (841) is arranged in the third sliding groove (715) in a penetrating mode.
4. The presser foot elevation adjustment mechanism of claim 1 wherein: the presser foot lifting driving assembly (30) comprises a rotating piece (31) with a cam peripheral surface (311), a driving crank (32) with a second fixed swinging fulcrum (O2), a roller (33), an adapter piece (34) and a fixing pin (35) fixed at one end of the swinging rod (40); the adapter (34) includes an adapter body portion (341), and an adapter shaft portion (342) extending vertically downward from a lower end of the adapter body portion (341); the rotating member (31) is directly or indirectly driven to rotate by a power source, the roller (33) is rotatably connected to one end of the driving crank (32) and abuts against the cam circumferential surface (311) of the rotating member (31), the adapter shaft portion (342) is rotatably and axially movably arranged at the other end of the driving crank (32) in a penetrating manner, and the fixing pin (35) is rotatably and axially movably arranged in the adapter body portion (341) in a penetrating manner.
5. The presser foot elevation adjustment mechanism of claim 4 wherein: the power source is a driving motor (20) vertically arranged in the casing (10).
6. The presser foot elevation adjustment mechanism of claim 4 wherein: the lower end of the driving crank (32) is provided with a torsion spring (38), and the torsion spring (38) enables the roller (33) to be closely attached to the cam circumferential surface (311) of the rotating piece (31).
7. The presser foot elevation adjustment mechanism of claim 1 wherein: the presser foot lifting execution assembly (60) comprises a presser foot lifting swinging rod (62) with a third fixed swinging fulcrum (O3), a presser foot lifting connecting rod (63), a guide plate (64) fixed to the machine shell (10) and a support (65), wherein a second guide groove (641) extending up and down is formed in the guide plate (64), a protruding sliding block (651) is arranged on the support (65), the presser foot rod (61) is fixed in the support (65), the other end of the transmission piece (50) is hinged with one end of the presser foot lifting swinging rod (62), the other end of the presser foot lifting swinging rod (62) is hinged with the upper end of the presser foot lifting connecting rod (63), the lower end of the presser foot lifting connecting rod (63) is hinged with the sliding block (651), and the sliding block (651) is located in the second guide groove (641) of the guide plate (64 and can slide up and down in the second guide groove (641).
8. The presser foot elevation adjustment mechanism of claim 7 wherein: an adjusting groove (631) extending up and down is formed in the presser foot lifting connecting rod (63), and the presser foot lifting swinging rod (62) is hinged with the presser foot lifting connecting rod (63) through an axial screw (66) penetrating through the adjusting groove (631); the presser foot bar (61) is sleeved with a pressure spring, and the upper end and the lower end of the pressure spring are respectively abutted against the machine shell (10) and the bracket (65).
9. A buttonholing machine, comprising a housing (10), characterized in that: the presser foot lifting height adjusting mechanism according to any one of claims 1 to 8 is installed in the casing (10).
CN201611092351.5A 2016-11-29 2016-11-29 Lift presser foot height adjustment mechanism and buttonholing machine Active CN108118457B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611092351.5A CN108118457B (en) 2016-11-29 2016-11-29 Lift presser foot height adjustment mechanism and buttonholing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611092351.5A CN108118457B (en) 2016-11-29 2016-11-29 Lift presser foot height adjustment mechanism and buttonholing machine

Publications (2)

Publication Number Publication Date
CN108118457A CN108118457A (en) 2018-06-05
CN108118457B true CN108118457B (en) 2023-07-07

Family

ID=62227230

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611092351.5A Active CN108118457B (en) 2016-11-29 2016-11-29 Lift presser foot height adjustment mechanism and buttonholing machine

Country Status (1)

Country Link
CN (1) CN108118457B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114763636B (en) * 2021-01-13 2023-06-20 杰克科技股份有限公司 Joint debugging mechanism and sewing machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07178272A (en) * 1993-12-24 1995-07-18 Juki Corp Device for adjusting the height of inner presser of sewing machine
JPH09253365A (en) * 1996-03-22 1997-09-30 Juki Corp Inner pressing device for automatic sewing machine
CN103590198A (en) * 2012-08-15 2014-02-19 上海贵衣缝纫设备有限公司 Press foot adjusting structure for extremely thick material in pattern sewing machine
CN203668643U (en) * 2013-12-31 2014-06-25 台州市好时机科技有限公司 Presser foot lifting mechanism of overlock machine
CN204491176U (en) * 2014-12-09 2015-07-22 台州市鼎鑫缝纫机有限公司 A kind of presser foot lifting device of Sewing machines
CN206266824U (en) * 2016-11-29 2017-06-20 拓卡奔马机电科技有限公司 A kind of presser foot lifter height adjustment mechanism and lockstitch button holder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3180955U (en) * 2012-10-31 2013-01-17 株式会社鈴木製作所 Sewing presser lifting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07178272A (en) * 1993-12-24 1995-07-18 Juki Corp Device for adjusting the height of inner presser of sewing machine
JPH09253365A (en) * 1996-03-22 1997-09-30 Juki Corp Inner pressing device for automatic sewing machine
CN103590198A (en) * 2012-08-15 2014-02-19 上海贵衣缝纫设备有限公司 Press foot adjusting structure for extremely thick material in pattern sewing machine
CN203668643U (en) * 2013-12-31 2014-06-25 台州市好时机科技有限公司 Presser foot lifting mechanism of overlock machine
CN204491176U (en) * 2014-12-09 2015-07-22 台州市鼎鑫缝纫机有限公司 A kind of presser foot lifting device of Sewing machines
CN206266824U (en) * 2016-11-29 2017-06-20 拓卡奔马机电科技有限公司 A kind of presser foot lifter height adjustment mechanism and lockstitch button holder

Also Published As

Publication number Publication date
CN108118457A (en) 2018-06-05

Similar Documents

Publication Publication Date Title
CN108118455B (en) Lift presser foot actuating mechanism and buttonhole maker
CN112626730B (en) Sewing machine
CN112048838B (en) Sewing machine
CN109371577B (en) Feed dog frame adjustment mechanism and overedger using same
CN108118454B (en) But fast separation and reunion's adjust knob lifts presser foot altitude mixture control mechanism
CN108118457B (en) Lift presser foot height adjustment mechanism and buttonholing machine
CN206266824U (en) A kind of presser foot lifter height adjustment mechanism and lockstitch button holder
CN206266825U (en) It is a kind of can fast clutch adjusting knob and presser foot lifter height adjustment mechanism
CN209428705U (en) Sewing length adjustment device and sewing machine with it
CN108118469B (en) Buttonhole sewing machine
CN108118448B (en) Buttonhole sewing machine
CN108118450B (en) Buttonhole sewing machine
CN108118449B (en) Buttonhole sewing machine
CN112626737B (en) Transmission clutch mechanism and sewing machine
TWI650461B (en) Inner presser foot mechanism
CN112626731B (en) Feed lifting mechanism with adjustable feed lifting height and sewing machine
CN112626733B (en) Feed lifting height adjusting method for sewing machine
CN112981738B (en) Lifting tooth height adjusting mechanism and overedger
CN215103876U (en) Device for adjusting presser foot alternating quantity of sewing machine
CN109629125B (en) Presser foot pressure and tooth rack inclination angle synchronous adjustment method based on overedger
CN110725076B (en) Needle bar height automatic regulating mechanism and sewing machine
CN108118456B (en) Automatic presser foot lifting mechanism and buttonholing machine
CN209428706U (en) Sewing length adjustment device and sewing machine with it
CN112796042B (en) Sewing machine
CN109487447B (en) Inner presser foot mechanism

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant