[go: up one dir, main page]

WO2020134508A1 - 缝纫机的送料装置及缝纫机 - Google Patents

缝纫机的送料装置及缝纫机 Download PDF

Info

Publication number
WO2020134508A1
WO2020134508A1 PCT/CN2019/113945 CN2019113945W WO2020134508A1 WO 2020134508 A1 WO2020134508 A1 WO 2020134508A1 CN 2019113945 W CN2019113945 W CN 2019113945W WO 2020134508 A1 WO2020134508 A1 WO 2020134508A1
Authority
WO
WIPO (PCT)
Prior art keywords
eccentric cam
tooth
feeding
lifting
sewing machine
Prior art date
Application number
PCT/CN2019/113945
Other languages
English (en)
French (fr)
Inventor
郑吉�
祝书伟
赵秋红
Original Assignee
杰克缝纫机股份有限公司
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
Application filed by 杰克缝纫机股份有限公司 filed Critical 杰克缝纫机股份有限公司
Publication of WO2020134508A1 publication Critical patent/WO2020134508A1/zh

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means

Definitions

  • the invention relates to a sewing machine, in particular to a feeding device of a sewing machine and a sewing machine.
  • the sewing machine is generally composed of four parts: feeding device, machine base, transmission and accessories.
  • the feeding device is the main part of the sewing machine. It consists of four mechanisms: barbed material, hook thread, thread take-up, feeding, and auxiliary mechanisms such as winding, pressing, and tooth falling. The movement of each mechanism cooperates reasonably and circulates to sew up the sewing material.
  • the feeding eccentric cam is an integrated structure, and the feeding eccentric wheel 0-1 includes a feeding eccentric portion 0-11 and a tooth lifting eccentric portion 0-12, both of which are at a specific angle and are not adjustable, and the feeding eccentric cam is integrally fixed
  • the feed eccentric part 0-11 is matched with the feed link 0-2
  • the tooth eccentric part 0-12 is matched with the tooth lift link 0-3
  • the tooth eccentric part 0-12 is connected through
  • the rod transmission structure transmits power to the tooth lifting crank 0-5, and the feeding eccentric portion 0-11 transmits power to the dental frame base 0-6 through the connecting rod transmission structure.
  • the swing of the dental frame base 0-6 mainly affects teeth 0-7
  • the displacement SX in the X direction, the swing of the tooth lifting crank 0-5 mainly affects the displacement SY of the tooth 0-7 in the Y direction, and the function curve of the rotation angle ⁇ of SX and SY relative to the main shaft 0-4, as shown in FIG.
  • the sewing machine with standard feeding tooth movement track is suitable for sewing medium-thickness fabrics, and can only achieve a single type of feeding track.
  • the adaptability to thick and thin materials is relatively poor, and it is difficult to meet the market's needs for different sewing fabrics. And it is difficult to adapt to the current diversified and personalized production environment.
  • an object of the present invention is to provide a feeding device and a sewing machine for a sewing machine, which are used to solve the problem that the feeding device in the prior art is difficult to adapt to sewing materials of different thicknesses.
  • the present invention provides a feeding device for a sewing machine, which includes
  • the feeding eccentric assembly includes a tooth lifting eccentric cam fixed on the main shaft and a feeding eccentric cam rotatably mounted on the main shaft, and the relative angle of the feeding eccentric cam and the tooth lifting eccentric cam is adjustable to realize the feeding trajectory Adjustment.
  • the feeding eccentric cam and the tooth lifting eccentric cam are connected by a clutch mechanism, and the clutch mechanism keeps the tooth lifting eccentric cam and the feeding eccentric cam locked; adjusting the clutch mechanism can make the tooth lifting eccentric cam It is relatively separated from the feeding eccentric cam. During the separation, the size of the eccentric angle between the tooth lifting eccentric cam and the feeding eccentric cam is adjusted by rotating the main shaft.
  • a clamping portion is provided on an outer peripheral surface of the tooth-lifting eccentric cam, a side of the feeding eccentric cam facing the tooth-lifting eccentric cam is provided with a sliding groove extending in the radial direction, and the clutch mechanism includes a sliding A block and a holding member for positioning a slider, the slider is slidingly arranged in the sliding groove, and has a locking portion, and the holding member keeps the locking portion in engagement with the locking tooth portion;
  • the feeding device of the sewing machine further includes a first adjustment component, and the slider is driven to slide through the first adjustment component to release the engagement between the locking portion and the clamping tooth portion.
  • the holding member is a torsion spring, one end of the torsion spring is connected to the feeding eccentric cam, and the other end of the torsion spring is connected to the slider.
  • protruding limit pins are provided on both side walls of the slide groove, and a protruding stop pin is provided at the clamping portion of the tooth-lifting eccentric cam, and the stop pin is located between the two limit pins And the limit pin is used to stop the stop pin.
  • the feeding eccentric cam is provided with a receiving groove into which the adjusting shaft is inserted.
  • the first adjustment assembly includes an adjustment shaft parallel to the sliding groove and axially movable, and a return spring disposed on the adjustment shaft.
  • the clutch mechanism includes a clutch sleeve provided on the main shaft and located between the tooth-lifting eccentric cam and the feeding eccentric cam, as well as a holder and an adjustable assembly; the side of the clutch sleeve is kept under The side of the eccentric cam for tooth lifting is sucked in, and the clutch sleeve cooperates with the circumferential limit of the feeding eccentric cam; the adjustable component is adjusted to slide the clutch sleeve to overcome the holding force of the holder and slide axially to release the clutch The sleeve is engaged with the tooth-lifting eccentric cam.
  • the clutch sleeve and the tooth-lifting eccentric cam are engaged by friction.
  • the clutch sleeve and the tooth-lifting eccentric cam are meshed by clamping teeth.
  • the adjustable component includes a button, a lever set to rotate, and a return spring connected to the lever, one end of the lever is located below the button, and the other end of the lever is cooperatively connected to the clutch sleeve; when the button is depressed Driving the lever to rotate, the lever turns to lock the other end of the lever and the clutch sleeve, so that the clutch sleeve moves in the axial direction away from the tooth-lifting eccentric cam to release the suction between the tooth-lifting eccentric cam and the clutch sleeve.
  • the end of the main shaft is provided with a hand wheel.
  • a scale corresponding to the angle between the eccentric cam of the tooth lifting eccentric cam and the feeding eccentric cam is provided in the circumferential direction of the hand wheel, the scale includes a zero scale, a positive scale and a negative scale, and the zero scale is located between the positive scale and the negative scale Between scales.
  • the present invention also provides a sewing machine having the feeding device of the sewing machine as described above.
  • the handwheel is provided with scales in the circumferential direction, and the scales include a zero scale, a positive scale and a negative scale, and the zero scale is located between the positive scale and the negative scale; the machine casing of the sewing machine is provided with an indicator mark opposite the handwheel ,
  • the deviation between the X-direction displacement and the Y-direction displacement of the feed tooth is less than the fixed value A.
  • the feeding device and sewing machine of the sewing machine of the present invention have the following beneficial effects: the position angle between the tooth-lifting eccentric cam and the feed eccentric cam is adjustable, and their different position angles correspond to different forms of feeding trajectories, adapting to different The thickness of the fabric; it can be easily switched between the three feeding trajectories, which greatly enhances the adaptability of the sewing machine to different fabrics; it is easy to operate and easy to understand. It does not need to disassemble the body when adjusting. By adjusting the positioning of the adjustable component and turning the hand wheel Can be achieved.
  • FIG. 1 is a schematic structural view of a feeding device of a sewing machine in the prior art
  • FIG. 2 is a schematic diagram of the eccentric feed structure in Figure 1;
  • FIG 3 is a schematic diagram of the feeding execution structure in Figure 1;
  • FIG. 4 is a schematic diagram of the function curve of the displacement of the feeding teeth in FIG. 1 in the X direction and the Y direction with respect to the rotation angle of the main shaft;
  • FIG. 5 is a schematic diagram of the standard trajectory of the feeding device of the sewing machine in the prior art
  • Embodiment 1 is a schematic structural view of Embodiment 1 of a feeding device of a sewing machine of the present invention
  • FIG. 7 is a schematic diagram of the feeding eccentric structure in FIG. 6;
  • Figure 8 is an exploded view of Figure 6;
  • FIG. 9 is a schematic structural view of the eccentric cam for raising teeth in FIG. 6;
  • FIG. 10 is a schematic diagram of the structure of the slider in FIG. 6;
  • FIG. 11 is a schematic structural view of the feeding eccentric cam in FIG. 6;
  • FIG. 12 is a schematic diagram of another angle of FIG. 6;
  • FIG. 13 is a schematic diagram of a far triangular trajectory of a feeding device of a sewing machine disclosed in an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a near-triangular trajectory of a feeding device of a sewing machine disclosed in an embodiment of the present invention.
  • FIG. 15 is a schematic structural view of a second embodiment of a feeding device of a sewing machine of the present invention.
  • FIG. 16 is a partial cross-sectional view of FIG. 15;
  • FIG. 17 is an enlarged view at A in FIG. 16;
  • FIG. 18 is a structural diagram of the clutch sleeve in FIG. 16.
  • FIG. 19 is another embodiment diagram of the tooth-lifting eccentric cam and the clutch sleeve.
  • the core of the present invention is to provide a feeding device of a sewing machine, which can be adjusted to realize the switching of the feeding track between different shapes according to the needs of different sewing materials; another core of the present invention is to provide a Sewing machine.
  • the present invention provides a feeding device for a sewing machine, which includes: a rotatable main shaft 3; a feeding eccentric assembly, including tooth-lifting eccentric cams 12, 16 fixed on the main shaft 3, and a rotatable
  • the feeding eccentric cams 5 and 17 installed on the main shaft 3, and the relative angle of the feeding eccentric cam and the tooth-lifting eccentric cam is adjustable to realize the adjustment of the feeding trajectory.
  • the feeding eccentric cams 5, 17 and the tooth lifting eccentric cams 12, 16 are connected by a clutch mechanism, and the clutch mechanism keeps the tooth lifting eccentric cams 12, 16 and the feeding eccentric cams 5, 17 locked;
  • the clutch mechanism can be adjusted to separate the lifting eccentric cams 12, 16 and the feeding eccentric cams 5, 17 by rotating the spindle 3 to adjust the eccentricity between the lifting eccentric cams 12, 16 and the feeding eccentric cams 5, 17. Angle size.
  • the tooth lifting eccentric cams 12, 16 and the feed eccentric cams 5, 17 are respectively sleeved on the outer side walls of the tooth lifting link 14 and the feed link 4, the tooth lifting link 14 and the tooth lifting eccentric cams 12, 16, and The feed link 4 and the feed eccentric cams 5, 17 are closely attached to the main shaft 3, and the tooth lift link 14 and the tooth lift eccentric cams 12, 16 can rotate relative to the feed link 4 and the feed eccentric cams 5, 17.
  • the tooth lifting eccentric cams 12, 16 and the feed eccentric cams 5, 17 are respectively sleeved on the outer side walls of the tooth lifting link 14 and the feed link 4, the tooth lifting link 14 and the tooth lifting eccentric cams 12, 16, and The feed link 4 and the feed eccentric cams 5, 17 are closely attached to the main shaft 3, and the tooth lift link 14 and the tooth lift eccentric cams 12, 16 can rotate relative to the feed link 4 and the feed eccentric cams 5, 17.
  • the independent tooth-lifting eccentric cams 12, 16 and the feed eccentric cams 5, 17 are used to drive the tooth-lifting connecting rod 14 and the feeder connecting rod 4, respectively, wherein the tooth-lifting eccentric cams 12, 16 are fixed to the spindle 3, and can be connected to The main shaft 3 rotates synchronously, and the feeding eccentric cams 5, 17 can rotate relative to the main shaft 3.
  • the clutch mechanism can be used to connect the tooth lifting eccentric cams 12, 16 and the feeding eccentric cams 5, 17 and keep the two locked, that is, the main shaft 3 is realized
  • the tooth lifting eccentric cams 12, 16 are driven to rotate, the feeding eccentric cams 5, 17 are rotated;
  • the spindle 3 can also drive the tooth lifting eccentric cams 12, 16 to rotate, but the feeding eccentric cams 5, 17 are not rotated, thereby eccentrically lifting the teeth
  • the cams 12, 16 and the feed eccentric cams 5, 17 are relatively deflected, so that the deflection angle of the two can be adjusted, that is, the size of the eccentric angle between the two is changed.
  • the eccentric angle in this specification refers to: The radial eccentricity of the radial eccentricity and feed eccentric cam and the radial center point of the main shaft are reflected on the same radial cross section. The angle formed by the radial center point of the main shaft as the apex formed between the three, the change of the eccentric angle That is, the phase difference between the functions "SX- ⁇ " and "SY- ⁇ ” is changed, and the trajectory of the feeding tooth is changed to adapt to different thickness of the sewing material.
  • the connecting screw 13 can also be fixed on the tooth-lifting eccentric cam 12, so that the tooth-lifting eccentric cam 12 is firmly locked Tightened on the main shaft 3; specifically, as shown in FIGS.
  • the tooth-lifting eccentric cam 12 includes a fixing portion 121, and the fixing portion 121 is provided with a threaded hole 1211 along its radial direction, and the threaded hole 1211 is cooperatively connected with a screw 13,
  • the threaded hole 1211 is deep to the main shaft 3, that is, the depth of the threaded hole should be greater than the distance from the outer end surface of the threaded hole 1211 to the outer wall of the corresponding main shaft 3; in this way, the screw 13 is screwed into the threaded hole 1211 and enters the main shaft 3, It can be ensured that the tooth-lifting eccentric cam 12 is locked to the main shaft 3. As shown in FIG.
  • the teeth-lifting eccentric cam 12 has axial teeth 122 and teeth-lifting portions 123 respectively on its axial side.
  • the teeth-lifting portion 123 has an eccentricity relative to the main shaft 3. 123 on.
  • the tooth-lifting eccentric cam 12 of this structure is easy to process and also facilitates its installation.
  • the related content of the screw connection can refer to the existing technology; of course, according to actual needs, it can also have other different settings, as long as the above function is satisfied.
  • FIG. 6 is a schematic structural view of an embodiment of a feeding device of a sewing machine of the present invention.
  • FIG. 7 is a schematic view of an eccentric feeding structure in FIG. 6.
  • FIG. 8 is an exploded view of FIG. 6 is a schematic structural view of a tooth-lifting eccentric cam in FIG. 6,
  • FIG. 10 is a schematic structural view of a slider in FIG. 6,
  • FIG. 11 is a structural schematic view of the feeding eccentric cam in FIG. 6, and
  • FIG. 12 is another schematic view in FIG.
  • the clutch mechanism in this embodiment includes a slider 7 and a holder for positioning the slider 7.
  • the holder is a torsion spring 15, and the eccentric cam 12 for raising teeth passes the slider 7
  • the tooth-lifting eccentric cam 12 and the feeding eccentric cam 5 are respectively connected to the slider 7 at positions close to each other, and under certain conditions, the slider 7 and the two are cooperatively connected
  • the purpose of relatively deflecting the tooth-lifting eccentric cam 12 and the feeding eccentric cam 5 can be achieved.
  • a tooth 122 is provided on the outer peripheral surface of the tooth-lifting eccentric cam 12, and the side of the feeding eccentric cam 5 facing the tooth-lifting eccentric cam 12 is provided with a sliding groove 521 extending in the radial direction.
  • the sliding groove 521 has a locking portion 72 that meshes with the locking teeth 122.
  • the torsion spring 15 keeps the locking portions 72 and the locking teeth 122 engaged.
  • the eccentric cam 12 and the teeth are raised The feed eccentric cam 5 is locked.
  • the latching portion 122 is provided on the side of the tooth-lifting eccentric cam 12 close to the feed eccentric cam 5, and accordingly, the slider 7 penetrating in the thickness direction is provided with a lock at the lower end of the slider 7 on the side close to the tooth-lifting eccentric cam 12
  • the inner wall of the locking portion 72 is provided with a zigzag tooth surface, and is engaged with and locked with the outer wall of the locking tooth portion 122 provided with a tooth surface cooperating therewith.
  • the connection method through tooth surface engagement can refer to the prior art. Of course, there may be other setting methods, provided that the above function is satisfied.
  • the feeding eccentric cam 5 is further provided with a clamping protrusion 52 which is provided on the side of the feeding eccentric cam 5 close to the tooth lifting eccentric cam 12 and along the vertical direction of the feeding eccentric cam 5
  • the longitudinal cross-section is symmetrically arranged.
  • the clamping protrusion 52 is provided with the above-mentioned sliding groove 521, which is vertically arranged and perpendicular to the cross section of the feeding eccentric cam 5; as shown in FIG.
  • the slider 7 is also provided There is a mating surface 71, which is provided on the left and right sides of the slider 7 and can be engaged with the sliding groove 521; in this way, the slider 7 can pass along the sliding groove in the sliding groove 521 through the matching surface 71 Move up and down in the direction, the slider 7 can be engaged and separated with the eccentric cam 12 by moving up and down along the direction of the chute.
  • the upper limit of the movement of the slider 7 along the direction of the chute is when the slider 7 and The state in which the tooth-lifting eccentric cam 12 contacts and engages.
  • the feed eccentric cam 5 has the above-mentioned slide groove 521 and the feed part 51 on both sides of the axial direction.
  • the feed part 51 has an eccentricity with respect to the main shaft 3.
  • the feed link 4 is mounted on the feed part 51.
  • the included angle is the eccentric included angle between the feeding portion 51 and the tooth lifting portion 123.
  • the feeding device of the sewing machine in this embodiment further includes a first adjusting assembly 10 and a second adjusting assembly 20.
  • the first adjusting assembly 10 can cooperate with the feeding eccentric cam 5, and at this time, the slider 7 is eccentric
  • the cam 12 is separated;
  • the second adjusting assembly 20 is fixed on the main shaft 3 to drive the main shaft 3 to rotate, and on the basis of the above, cooperates with the first adjusting assembly 10 to adjust the feeding track of the feeding device.
  • the first adjustment assembly 10 includes an adjustment shaft 101 that is parallel to the above-mentioned sliding groove 521 and can move axially, and a return spring 102 disposed on the adjustment shaft 101.
  • the tooth-lifting eccentric cam 12 deflects relative to the feeding eccentric cam 5, wherein the tooth-lifting eccentric cam 12
  • the relative deflection angle of the feeding eccentric cam 5 is controlled by the second adjusting assembly 20, and the relative angular position corresponds to different feeding trajectory shapes.
  • the user when it is necessary to adjust the feeding trajectory, the user only needs to press the first adjusting assembly 10 and rotate the second adjusting assembly 20; the purpose of pressing the first adjusting assembly 10 is to make the tooth-lifting eccentric cam 12 and the feeding eccentric cam 5 Unlock each other to ensure relative rotation between the two; the relative deflection angle of the two is controlled by the second adjustment assembly 20, and the relative angle position corresponds to different feed trajectory shapes, thereby ensuring that there will be no large during the adjustment process Deviation to ensure the accuracy of feeding track adjustment.
  • the first adjustment assembly 10 includes a vertically arranged adjustment shaft 101 and a return spring 102 threaded on the adjustment shaft 101.
  • the feeding eccentric cam 5 further includes an accommodating groove 53 that cooperates with the end of the adjustment shaft 101 ,
  • the adjusting shaft 101 extends its lower end into the receiving groove 53 provided at the upper end of the feeding eccentric cam 5 through vertical movement.
  • the receiving groove 53 may be a receiving groove with a rectangular cross section, and of course, it may be set to other shapes; the adjusting shaft 101 extends At the same time, the slider 7 is pushed up, so that the tooth-lifting eccentric cam 12 which is kept in a locked state is separated from the feeding eccentric cam 5, and the axial rotation of the feeding eccentric cam 5 is restricted due to the extension of the adjustment shaft 101.
  • the adjustment shaft 101 is released, and the adjustment shaft 101 is reset under the action of the return spring 102.
  • the return spring 102 is provided on the outer side wall of the adjustment shaft 101. When the adjustment shaft 101 is pressed, the return spring 102 is compressed, which The bottom end is against the outer side wall of the adjustment shaft 101, so that the adjustment shaft 101 can move vertically downward, and when the pressure on the adjustment shaft 101 is released, the return spring 102 can return to the original length, at this time, the adjustment shaft 101 Move up and return to its original position.
  • Protruding stop pins 8 and 9 are provided on both side walls of the sliding slot 521, and protruding stop pins 6 are provided at the clamping teeth 122 of the eccentric cam 12 for raising teeth. Between the limit pins 8 and 9, and the limit pins 8 and 9 are used to stop the stop pin 6 even if the eccentric adjustment range of the tooth-lifting eccentric cam 12 relative to the feeding eccentric cam 5 is.
  • the two clamping protrusions 52 are symmetrically provided with limiting holes 522, and the limiting holes 522 are connected to the limiting pins 8 and 9; specifically, the limiting holes 522 are disposed on the clamping protrusions 52 and are perpendicular to the axis of the main shaft 3 On the outer side wall, similarly, the limiting hole 522 and the matching connecting limiting pins 8 and 9 are also symmetrically arranged at the corresponding positions of the clamping protrusion 52.
  • the holding member in this embodiment is a torsion spring 15, and one end of the torsion spring 15 and the feeding eccentric cam 5 (in this embodiment, one end of the torsion spring is fixed on the above-mentioned limit pin 8 ) Is connected, the other end of the torsion spring 15 is connected to the slider 7; the elastic force of the torsion spring 15 keeps the slider 7 engaged with the above-mentioned tooth lifting eccentric cam 12.
  • a clamping groove may be provided at a position of the slider 7 close to the locking portion 72 for clamping the clamping joint at one end of the torsion spring 15, and correspondingly, a screw may be provided at a corresponding position of the feeding eccentric cam 5 to cover
  • the torsion spring 15 is set to achieve the purpose of fixing the torsion spring 15; in this way, the rebound force of the torsion spring 15 can make the slider 7 and the tooth-lifting eccentric cam 12 re-engage and lock.
  • other different setting methods are possible, provided that the slider 7 and the tooth-lifting eccentric cam 12 can be restored to the state of mutual engagement under the action of external force in the non-adjusting state.
  • the adjustment shaft 101 If the adjustment shaft 101 is manually pressed, the head of the adjustment shaft 101 extends into the accommodating groove 53 to separate the locking portion 72 of the slider 7 from the teeth 122, and the feeding eccentric cam 5 can be restricted by the adjustment shaft 101 from turning , Turn the hand wheel 2 to deflect between the lifting eccentric cam 12 and the feeding eccentric cam 5; loosen the adjustment shaft 101, the adjustment shaft 101 is reset by the return spring 102, and the slider 7 is reset by the torsion spring 15 and The locking portion 72 is re-engaged with the locking tooth portion 122, so that the tooth-lifting eccentric cam 12 and the feeding eccentric cam 5 are locked to each other.
  • the trajectory of the feeding tooth can be changed by simply pressing the adjustment shaft 101 and rotating the main shaft 3 to change the eccentric angle between the eccentric cam 12 for raising the tooth and the eccentric cam 5 for feeding.
  • FIG. 15 is a schematic structural view of a second embodiment of a feeding device of a sewing machine of the present invention
  • FIG. 16 is a schematic diagram of the clutch mechanism in FIG. 15
  • FIG. 17 is an enlarged view of A in FIG. 18 is a schematic structural diagram of the clutch sleeve in FIG. 16.
  • the difference between this embodiment and the first embodiment lies mainly in the clutch mechanism, that is, the specific structure for locking and releasing the tooth-lifting eccentric cam 16 and the feeding eccentric cam 17 is different.
  • the above-mentioned clutch mechanism includes a clutch sleeve 19 provided on the main shaft 3 and located between the tooth-lifting eccentric cam 16 and the feeding eccentric cam 17, as well as the holder and the adjustable assembly 30; the side of the clutch sleeve 19 is on the holder Under the maintenance of the tooth-lifting eccentric cam 16 side suction, and the clutch sleeve 19 and the feed eccentric cam 17 circumferential limit cooperation; adjust the adjustable assembly 30 to dial the clutch sleeve 19 to overcome the holder The holding force of the shaft slides axially to release the clutch 19 from the tooth-lifting eccentric cam 16.
  • the clutch sleeve 19 cooperates with the feed eccentric cam 17 in a circumferential limit, that is, the clutch sleeve and the feed eccentric cam 17 rotate synchronously, and the clutch sleeve 19 and the tooth lift eccentric cam 16 are engaged.
  • the main shaft 3 drives the tooth-lifting eccentric cam 16 to rotate, and then drives the feeding eccentric cam 17 to rotate through the clutch sleeve 19; adjusting the adjustable assembly 30 can make the clutch sleeve 19 slide axially to release the suction from the tooth-lifting eccentric cam 16, so the main shaft is rotated 3 drives the tooth lifting eccentric cam 16 to rotate, and the clutch sleeve 19 and the feeding eccentric cam 17 do not move, thereby changing the relative angle between the tooth lifting eccentric cam 16 and the feeding eccentric cam 17, that is, the size of the eccentric angle changes, which is achieved To change the trajectory of feeding teeth.
  • the clutch sleeve 19 and the tooth-lifting eccentric cam 16 are engaged by friction.
  • friction plates 191 are provided on the end surface of the clutch sleeve 19 facing the tooth lifting eccentric cam 16
  • friction plates are provided on the end surface of the tooth lifting eccentric cam 16 facing the clutch sleeve 19. 161.
  • the friction force between the two friction plates 161 and 191 causes the clutch sleeve 19 and the tooth-lifting eccentric cam 16 to be engaged to realize synchronous rotation of the two.
  • the above-mentioned clutch sleeve 19 and the tooth-lifting eccentric cam 16 can also be engaged by snap teeth.
  • a clamping portion (not shown) is provided on the end face of the clutch sleeve 19 facing the eccentric cam 16 for raising teeth, and on the end face of the eccentric cam 16 facing the clutch sleeve 19 in this embodiment
  • the tooth groove 162 is provided, and the clutch sleeve 19 and the tooth-lifting eccentric cam 16 are attracted by the meshing of the clamping tooth portion and the tooth groove 162 to realize the synchronous rotation of the two.
  • the attraction between the clutch sleeve 19 and the tooth-lifting eccentric cam 16 is not limited to the above friction and engagement of the teeth, and it may be other structures, as long as the two can achieve synchronous rotation during attraction.
  • a shaft pin 171 is provided on the feeding eccentric cam 17, and a clutch sleeve 19 is provided
  • the pin hole 192 and the shaft pin 171 are inserted into the pin hole 192, and the circumferential positioning of the clutch sleeve 19 and the feeding eccentric cam 17 is realized by the cooperation of the shaft pin 171 and the pin hole 192, that is, when the clutch sleeve 19 rotates, the feeding eccentric cam 17 is simultaneously rotated ; And the pin hole 192 satisfies the feed eccentric cam 17 does not move when the clutch sleeve 19 slides in the axial direction.
  • the circumferential positioning connection between the clutch sleeve 19 and the feeding eccentric cam 17 is not limited to this, it only needs to satisfy the synchronous rotation between the two and can slide axially.
  • a stop block 11 is provided on the main shaft to restrict the axial sliding of the feeding eccentric cam 17, and the stopping block 11 and the clutch sleeve 19 are located on two sides of the feeding eccentric cam 17, respectively. side.
  • the above-mentioned holding member is a spring 18, which is located between the feeding eccentric cam 17 and the clutch sleeve 19, which gives the clutch sleeve 19 a movement force to the tooth lifting eccentric cam 16 to maintain the tooth lifting eccentric cam 16 and the clutch sleeve 19 pull in.
  • the above-mentioned adjustable assembly 30 includes a button 301, a lever 302 that is rotationally set, and a return spring 303 connected to the lever 302.
  • the clutch sleeve 19 is provided with a circumferential direction In the groove 193, a first friction surface 305 is provided on the side wall of the circumferential groove 193, one end of the lever 302 is located below the button 301, the other end of the lever 302 extends into the circumferential groove 193, and the other end of the lever 302
  • a stop pin with a second friction surface 304 is installed, and pressing the button 301 can drive the lever 302 to rotate.
  • the lever 302 rotates to move the stop pin toward the first friction surface 305, and the first friction surface 304 and the second friction surface 305
  • the lever 301 is pressed to drive the lever 302 to rotate, thereby driving the clutch sleeve 19 to slide axially.
  • the return spring 303 resets the lever 302 to release the attraction between the first friction surface 304 and the second friction surface 305.
  • the cooperation between the lever 302 and the clutch sleeve 19 is not limited to this.
  • the protrusion is inserted into the fork and can be inserted when the lever rotates.
  • the axial movement of the clutch sleeve is toggled, that is, the cooperation between the lever 302 and the clutch sleeve 19 only needs to realize the above function.
  • the structure of the above adjustable component is not limited to this, it only needs to be able to drive the clutch sleeve 19 to slide axially.
  • the clutch mechanism that is, the above-mentioned clutch sleeve 19 and the tooth-lifting eccentric cam 16 are in a "locked” state, and the feeding eccentric cam 17 and the tooth-lifting eccentric cam 16 relatively do not rotate.
  • the friction plate 191 on the right side of the clutch sleeve and the friction plate 161 on the left side of the tooth lifting eccentric cam are locked under the action of the spring 18.
  • the tooth lifting eccentric cam 16 and the feeding eccentric cam 17 are locked to each other without deflection. ;
  • the clutch mechanism can be switched between the “locked” and “released” states. If the button 301 is pressed, the lever 302 is rotated clockwise around the hinge point, so that the first friction surface 304 and the second friction surface 305 are in contact and the friction plate 191 and the friction plate 161 are separated, so that the clutch mechanism is in the "released” state, the In the process, the clutch sleeve 19 is limited by the stop pin 171 and slides in the axial direction.
  • This embodiment is based on the first embodiment and the second embodiment, the above-mentioned hand wheel 201 is installed on the main shaft 3, the hand wheel 201 is fixed to the end of the main shaft 3 and used to control the main shaft 3 and the tooth lifting eccentric cam 12 to rotate synchronously, this
  • a scale 2011 is further provided on the circumferential direction of the hand wheel 201.
  • the scale 2011 corresponds to the eccentric angle between the tooth-lifting eccentric cam 12 and the feeding eccentric cam 5.
  • the indicator mark 202 with the scale 2011 is provided on the casing.
  • the scale 2011 in this embodiment includes a zero scale, a positive scale, and a negative scale, and the zero scale is located between the positive scale and the negative scale.
  • the above-mentioned indicator mark 202 is provided on the casing of the sewing machine, and the current feeding tooth track can be judged by which scale the indicator mark 202 points to.
  • the scale 2011 pointed by the tip of the index mark 202 corresponds to the eccentric angle between the eccentric cams 12, 16 and the feed eccentricities 5, 17.
  • the index mark 202 points to "0"
  • the tooth is fed.
  • the trajectory corresponds to the standard trajectory shown in FIG. 5.
  • the Y-direction displacement function "SY- ⁇ " of the feeding tooth remains unchanged, that is, the curve in the "SY- ⁇ " coordinate in FIG. 4; when the scale 2011 indicates a positive scale, the feeding tooth
  • the eccentric angle between the eccentric cam 5 and the tooth-lifting eccentric cam 12 becomes larger, and the phase difference ⁇ of the feeding tooth's X-direction displacement function "SX- ⁇ " relative to the function "SY- ⁇ ” increases, which is greater than that in Figure 4.
  • the phase difference ⁇ is large, so that the shape of the feeding tooth trajectory changes from the standard type trajectory shown in FIG. 5 to the far triangle type trajectory shown in FIG.
  • the feeding tooth trajectory corresponds to the far-triangular trajectory shown in FIG. 13, in the far-triangular trajectory, a and b are points 1 and 2, and 2 and 3, respectively.
  • the ratio of a/b is greater than "1", that is, a is greater than b.
  • the ratio is larger. This type of trajectory lifts the tooth in the early stage of the feeding tooth. The height increases slowly, and the corresponding feeding force increases slowly. In the later stage of feeding, the tooth lifting height decreases rapidly, and the corresponding feeding force decreases rapidly, which is conducive to the thread take-up and is suitable for sewing thick fabrics;
  • the feeding tooth trajectory corresponds to the near-triangular trajectory shown in FIG. 14; in the near-triangular trajectory, the a/b ratio is less than "1", that is, a is smaller than b, with the With the increase of the scale value, the index mark 202 has a smaller ratio.
  • the trajectory of this form increases the height of the tooth lifting in the early stage of the feeding tooth, corresponding to the rapid increase in the feeding force, and slowly decreases the height of the tooth lifting in the late stage of the feeding tooth. Corresponding to the slow decrease of feeding force, it is not easy to produce wrinkles, suitable for sewing thin fabrics.
  • the feeding device and sewing machine of the sewing machine of the present invention can adjust the position angle between the tooth-lifting eccentric cam and the material-feeding eccentric cam, and their different position angles correspond to different forms of feeding trajectories and are suitable for different thicknesses of cloth; It can be easily switched between the three feeding trajectories, which greatly enhances the adaptability of the sewing machine to different fabrics; it is easy to operate and easy to understand. It does not need to disassemble the body when adjusting. It can be achieved by adjusting the positioning adjustable component and turning the hand wheel. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

Landscapes

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

Abstract

一种缝纫机的送料装置及缝纫机，其包括：可转动的主轴（3）；送料偏心组件，包括固定在主轴上的抬牙偏心凸轮（12，16）、可转动地安装在主轴上的送料偏心凸轮（5，17），且所述送料偏心凸轮与所述抬牙偏心凸轮的相对角度可调，以实现送料轨迹的调节。该送料装置的抬牙偏心凸轮与送料偏心凸轮之间的位置角度可调，其不同的位置角度对应不同形式的送料轨迹，适应不同厚度的布料。

Description

缝纫机的送料装置及缝纫机 技术领域
本发明涉及缝纫机，特别是涉及一种缝纫机的送料装置及缝纫机。
背景技术
缝纫机一般都由送料装置、机座、传动和附件四部分组成。送料装置是缝纫机的主要部分。它由刺料、钩线、挑线、送料四个机构和绕线、压料、落牙等辅助机构组成，各机构的运动合理地配合，循环工作，把缝料缝合起来。
如图1、图2和图3所示，在现有的缝纫机送料机构中，一般通过送料牙齿来完成送料，标准轨迹形式的送料牙齿运动轨迹比较平稳，故在现代的缝纫机中较常用。通常来说，其送料偏心凸轮为一体式结构，送料偏心轮0-1包括送料偏心部0-11和抬牙偏心部0-12，两者呈特定的角度且不可调节，送料偏心凸轮整体固定在主轴0-4上，送料偏心部0-11上配合有送料连杆0-2，抬牙偏心部0-12上配合有抬牙连杆0-3，抬牙偏心部0-12通过连杆传动结构将动力传递至抬牙曲柄0-5，送料偏心部0-11通过连杆传动结构将动力传递至牙架座0-6，牙架座0-6的摆动主要影响牙齿0-7在X方向的位移SX，抬牙曲柄0-5的摆动主要影响牙齿0-7在Y方向的位移SY，SX和SY相对于主轴0-4的转角Φ的函数曲线，如图4所示；其中，函数“SX-Φ”和“SY-Φ”具有一定的相位差ΔΦ；在标准状况下，相位差ΔΦ约为90°，通过“SX-Φ”和“SY-Φ”共同作用形成了标准型轨迹形式，如图5所述；其中，点1为牙齿出针板时的点，点2为牙齿最高点，点3为牙齿入针板时的点，a、b分别为点1和点2、点2和点3的水平方向距离，图5上方的箭头方向为牙齿的运动方向，标准型轨迹中a/b的比值接近“1”，两者距离基本相同。具有标准型送料牙齿运动轨迹的缝纫机适合缝制中等厚度的布料，只能实现单一类型的送料轨迹，对于厚料和薄料的适应性相对较差，难以满足市场对于不同缝制布料的需求，并且很难适应当前多样化、个性化的生产环境。
因此，如何避免缝纫机对不同品类的缝制布料适应性较差，难以适应当前多样化、个性化的生产环境是本领域技术人员目前要解决的技术问题。
发明内容
鉴于以上所述现有技术的缺点，本发明的目的在于提供一种缝纫机的送料装置及缝纫机，用于解决现有技术中送料装置难以适应不同厚度的缝料的问题。
为实现上述目的及其他相关目的，本发明提供一种缝纫机的送料装置，其包括：
可转动的主轴；
送料偏心组件，包括固定在主轴上的抬牙偏心凸轮、可转动地安装在主轴上的送料偏心凸轮，且所述送料偏心凸轮与所述抬牙偏心凸轮的相对角度可调，以实现送料轨迹的调节。
优选的，所述送料偏心凸轮与所述抬牙偏心凸轮通过离合机构相连，离合机构将所述抬牙偏心凸轮和所述送料偏心凸轮保持锁止；调节离合机构可使所述抬牙偏心凸轮和所述送料偏心凸轮相对分离，分离时通过转动主轴调节抬牙偏心凸轮和送料偏心凸轮间的偏心夹角大小。
优选的，所述抬牙偏心凸轮的外周面上设有卡齿部，所述送料偏心凸轮朝向所述抬牙偏心凸轮的一侧设有沿径向延伸的滑槽，所述离合机构包括滑块和定位滑块用的保持件，所述滑块滑动设于所述滑槽内、且具有锁止部，所述保持件使所述锁止部与所述卡齿部保持啮合；所述缝纫机的送料装置还包括第一调节组件，通过第一调节组件驱动滑块滑动，解除所述锁止部与所述卡齿部间的啮合。
优选的，所述保持件为扭簧，扭簧的一端与所述送料偏心凸轮相连，扭簧的另一端与所述滑块相连。
优选的，所述滑槽的两侧壁上均设有突出的限位销，所述抬牙偏心凸轮的卡齿部处设有突出的挡销，所述挡销位于两个限位销之间，且限位销用于止挡挡销。
优选的，所述送料偏心凸轮上设有供所述调节轴插入的容纳槽。
优选的，所述第一调节组件包括与滑槽平行、且可轴向运动的调节轴，以及穿设在调节轴上的复位弹簧。
优选的，所述离合机构包括设于所述主轴上且位于抬牙偏心凸轮和送料偏心凸轮间的离合套，以及保持件和可调组件；离合套的侧面在保持件的保持下与所述抬牙偏心凸轮的侧面吸合，且离合套与所述送料偏心凸轮周向限位配合；调节可调组件拨动所述离合套克服所述保持件的保持力轴向滑动，解除所述离合套与所述抬牙偏心凸轮的吸合。
优选的，所述离合套和所述抬牙偏心凸轮通过摩擦吸合。
优选的，所述离合套和所述抬牙偏心凸轮通过卡齿啮合。
优选的，所述可调组件包括按钮、转动设置的杠杆、以及与杠杆相连的复位弹簧，所述 杠杆的一端位于按钮的下方，杠杆的另一端与离合套配合相连；当按钮下压时可带动杠杆转动，杠杆转动使杠杆的另一端和离合套锁紧，进而使离合套沿轴向向远离抬牙偏心凸轮的方向运动，解除抬牙偏心凸轮和离合套间的吸合。
优选的，所述主轴的端部设有手轮。
优选的，所述手轮的周向上设有对应所述抬牙偏心凸轮与所述送料偏心凸轮偏心夹角大小的刻度，刻度包括零刻度、正刻度和负刻度，零刻度位于正刻度和负刻度之间。
本发明还提供一种缝纫机，所述缝纫机具有如上所述的缝纫机的送料装置。
优选的，所述手轮的周向上设有刻度，刻度包括零刻度、正刻度和负刻度，零刻度位于正刻度和负刻度之间；所述缝纫机的机壳相对手轮处设有指示标记，
当指示标记指向零刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，缝纫机的送料牙齿沿正椭圆轨迹运动，送料牙齿的X向位移与Y向位移偏差值为定值A；
当指示标记指向正刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，所述送料牙齿的X向位移与Y向位移偏差值大于定值A；
当指示标记指向负刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，所述送料牙齿的X向位移与Y向位移偏差值小于定值A。
如上所述，本发明的缝纫机的送料装置及缝纫机，具有以下有益效果：其抬牙偏心凸轮与送料偏心凸轮之间的位置角度可调，其不同的位置角度对应不同形式的送料轨迹，适应不同厚度的布料；可在三种送料轨迹之间方便切换，使得缝纫机对不同布料的适应性大大增强；操作方便，简单易懂，调节时不用拆开机体，通过调节定位可调组件、转动手轮即可实现。
附图说明
图1为现有技术中缝纫机的送料装置的结构示意图；
图2为图1中送料偏心结构的示意图；
图3为图1中送料执行结构的示意图；
图4为图1中送料牙齿分别在X方向和Y方向的位移相对于主轴转角的函数曲线示意图；
图5为现有技术中缝纫机的送料装置的标准型轨迹示意图；
图6为本发明的一种缝纫机的送料装置的实施例一结构示意图；
图7为图6中送料偏心结构的示意图；
图8为图6的爆炸图；
图9为图6中抬牙偏心凸轮的结构示意图；
图10为图6中滑块的结构示意图；
图11为图6中送料偏心凸轮的结构示意图；
图12为图6的另一角度示意图；
图13为本发明实施例公开的一种缝纫机的送料装置的远三角形轨迹示意图；
图14为本发明实施例公开的一种缝纫机的送料装置的近三角型轨迹示意图；
图15为本发明的一种缝纫机的送料装置的实施例二结构示意图；
图16为图15中的局部剖视图；
图17为图16中的A处放大图；
图18为图16中的离合套的结构图。
图19为抬牙偏心凸轮与离合套吸合的另一实施例图。
元件标号说明
0-1                    送料偏心轮
0-11                   送料偏心部
0-12                   抬牙偏心部
0-2                    送料连杆
0-3                    抬牙连杆
0-4                    主轴
0-5                    抬牙曲柄
0-6                    牙架座
0-7                    牙齿
3                      主轴
4                      送料连杆
5、17                  送料偏心凸轮
51                     送料部
52                     卡接凸起
521                    滑槽
522                    限位孔
53                     容纳槽
6                      挡销
7                      滑块
71                     配合面
72                     锁止部
8、9                   限位销
10                     第一调节组件
101                    调节轴
102                    复位弹簧
11                     止挡块
12、16                 抬牙偏心凸轮
121                    固定部
1211                   螺纹孔
122                    卡齿部
123                    抬牙部
13                     螺钉
14                     抬牙连杆
15                     扭簧
18                     弹簧
19                     离合套
191、161               摩擦片
192                    销孔
193                    周向槽
20                     第二调节组件
201                    手轮
2011                   刻度
202                    指示标记
30                     可调组件
301                    按钮
302                    杠杆
303                    复位弹簧
304                    第二摩擦面
第5/17页
305                    第一摩擦面
162                    齿槽
171                    轴销
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
请参阅图1至图19。须知，本说明书所附图中所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容所能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
本发明的核心是提供一种缝纫机的送料装置，可以根据不同缝制布料的需求，通过调节实现送料轨迹在不同形状之间的切换；本发明的另一核心是提供一种具有上述送料装置的缝纫机。见图12-图19所示，本发明提供一种缝纫机的送料装置，其包括：可转动的主轴3；送料偏心组件，包括固定在主轴3上的抬牙偏心凸轮12、16、可转动地安装在主轴3上的送料偏心凸轮5、17，且所述送料偏心凸轮与所述抬牙偏心凸轮的相对角度可调，以实现送料轨迹的调节。
本实施例中送料偏心凸轮5、17与所述抬牙偏心凸轮12、16通过离合机构相连，离合机构将所述抬牙偏心凸轮12、16和所述送料偏心凸轮5、17保持锁止；调节离合机构可使所述抬牙偏心凸轮12、16和所述送料偏心凸轮5、17相对分离，分离时通过转动主轴3调节抬牙偏心凸轮12、16和送料偏心凸轮5、17间的偏心夹角大小。
此外，抬牙偏心凸轮12、16与送料偏心凸轮5、17的外侧壁上分别套设有抬牙连杆14与送料连杆4，抬牙连杆14与抬牙偏心凸轮12、16，以及送料连杆4与送料偏心凸轮5、17均在主轴3上紧密贴合，且抬牙连杆14与抬牙偏心凸轮12、16可以相对于送料连杆4与送料偏心凸轮5、17转动。其中，抬牙连杆14与送料连杆4的设置方式可以参照现有技术部分。
本实施例其采用独立的抬牙偏心凸轮12、16和送料偏心凸轮5、17来分别驱动抬牙连杆14和送料连杆4，其中抬牙偏心凸轮12、16与主轴3固定，能够与主轴3同步旋转，而 送料偏心凸轮5、17相对主轴3可转动，采用离合机构可将抬牙偏心凸轮12、16和送料偏心凸轮5、17相连且使两者保持锁止，即实现主轴3带动抬牙偏心凸轮12、16转动时带动送料偏心凸轮5、17转动；也可实现主轴3带动抬牙偏心凸轮12、16转动时而送料偏心凸轮5、17不转动，由此来使抬牙偏心凸轮12、16与送料偏心凸轮5、17发生相对偏转，使两者偏转角度可调，即改变两者间的偏心夹角大小，本说明书中的偏心夹角指的是：抬牙偏心凸轮的径向偏心、送料偏心凸轮的径向偏心与主轴的径向中心点间反映到同一径向截面上，三者间形成的以主轴的径向中心点为顶点的夹角，偏心夹角的改变即改变了函数“SX-Φ”和“SY-Φ”间的相位差，实现了送料牙齿轨迹的改变，以此适应不同的缝料厚度。
在送料轨迹调节过程中，为了避免由于抬牙偏心凸轮12的滑移而导致调节发生偏差，本实施例还可以在抬牙偏心凸轮12上固定连接螺钉13，使抬牙偏心凸轮12牢牢锁紧在主轴3上；具体地，见图8及图9所示，抬牙偏心凸轮12包括固定部121，固定部121沿其径向设置有螺纹孔1211，螺纹孔1211配合连接有螺钉13，螺纹孔1211纵深至主轴3，也就是说，螺纹孔的深度应该大于螺纹孔1211外端面至对应主轴3外侧壁的距离；这样一来，通过螺钉13旋入螺纹孔1211并进入主轴3内，可以确保将抬牙偏心凸轮12锁紧于主轴3。见图9所示，抬牙偏心凸轮12其轴向的两侧分别为卡齿部122和抬牙部123，抬牙部123相对主轴3具有偏心，上述抬牙连杆14安装在抬牙部123上。该结构的抬牙偏心凸轮12易于加工，也便于实现其安装。
在这里，螺钉连接的相关内容可以参考现有技术；当然，根据实际需要，也可以具有其他不同的设置方式，只要满足上述功能即可。
实施例一
请参考图6至图12，图6为本发明的一种缝纫机的送料装置的实施例一结构示意图，图7为图6中送料偏心结构的示意图，图8为图6的爆炸图，图9为图6中抬牙偏心凸轮的结构示意图，图10为图6中滑块的结构示意图，图11为图6中送料偏心凸轮的结构示意图，图12为图6的另一角度示意图。
见图7-图12所示，本实施例中离合机构包括滑块7、和定位滑块7用的保持件，本实施例中保持件为扭簧15，抬牙偏心凸轮12通过滑块7与送料偏心凸轮5实现配合连接，具体地，抬牙偏心凸轮12与送料偏心凸轮5在彼此相互靠近的部位分别与滑块7连接，在一定条件下，通过滑块7与二者的配合连接可以达到抬牙偏心凸轮12与送料偏心凸轮5发生相对偏转的目的。
抬牙偏心凸轮12的外周面上设有卡齿部122，送料偏心凸轮5朝向所述抬牙偏心凸轮12的一侧设有沿径向延伸的滑槽521，上述滑块7滑动设于所述滑槽521内、且具有与卡齿部122相啮合的锁止部72，上述扭簧15使所述锁止部72与所述卡齿部122保持啮合，抬牙偏心凸轮12和所述送料偏心凸轮5被锁止。具体地，卡齿部122设置于抬牙偏心凸轮12靠近送料偏心凸轮5的一侧，相应地，在厚度方向贯通的滑块7在其下端靠近抬牙偏心凸轮12的一侧设置有锁止部72，锁止部72的内侧壁设置有锯齿形的齿面，并与卡齿部122设有与之相互配合的齿面的外侧壁相互啮合锁紧。在这里，通过齿面啮合的连接方式可以参考现有技术，当然此处也可以有其他的设置方式，前提是要满足上述功能。
见图11所示，送料偏心凸轮5还设有卡接凸起52，卡接凸起52设置于送料偏心凸轮5靠近抬牙偏心凸轮12的一侧，并且沿着送料偏心凸轮5竖直方向的纵截面对称设置，进一步地，卡接凸起52上设有上述滑槽521，滑槽521竖直设置并垂直于送料偏心凸轮5的横截面；见图10所示，滑块7还设有配合面71，配合面71设置于滑块7左、右两侧，并可以与滑槽521实现卡接；这样一来，滑块7可以通过配合面71在滑槽521中沿着滑槽方向上、下移动，滑块7通过沿着滑槽方向上、下移动可以实现与抬牙偏心凸轮12的啮合与分离，滑块7沿着滑槽方向的移动上限即为当滑块7与抬牙偏心凸轮12接触并发生啮合的状态。
见图11所示，送料偏心凸轮5其轴向的两侧分别为上述滑槽521和送料部51，送料部51相对主轴3具有偏心，上述送料连杆4安装在送料部51上，上述偏心夹角即送料部51与抬牙部123的偏心夹角。
本实施例中缝纫机的送料装置上述的送料装置还包括第一调节组件10和第二调节组件20，第一调节组件10可以与送料偏心凸轮5实现配合，此时，滑块7与抬牙偏心凸轮12分离；第二调节组件20固定于主轴3上以便带动主轴3转动，在上述基础上，与第一调节组件10配合，用以调节送料装置的送料轨迹。第一调节组件10包括与上述滑槽521平行、且可轴向运动的调节轴101，以及穿设在调节轴101上的复位弹簧102。具体地，当进行送料轨迹调节时，通过按压调节轴101，使其竖直向下运动至与送料偏心凸轮5连接，连接的同时顶开滑块7，这样一来，使得原先保持配合状态的滑块7与抬牙偏心凸轮12彼此分离，从而打破抬牙偏心凸轮12与送料偏心凸轮5之间通过滑块7相互锁死不能发生偏转的状态；再通过第二调节组件20控制主轴3与抬牙偏心凸轮12同步转动，此时，送料偏心凸轮5由于第一调节组件10的限制作用而不能发生转动，因此，抬牙偏心凸轮12相对送料偏心凸轮5发生偏转，其中，抬牙偏心凸轮12与送料偏心凸轮5的相对偏转角度由第二调节组件20来控制，并且相对角度位置对应不同的送料轨迹形状。
如此设置，当需要调节送料轨迹时，用户仅仅通过按压第一调节组件10，并旋转第二调节组件20即可；按压第一调节组件10的目的是使得抬牙偏心凸轮12与送料偏心凸轮5相互解锁，从而确保两者之间可发生相对转动；通过第二调节组件20控制两者的相对偏转角度，由相对角度位置对应不同的送料轨迹形状，从而确保在调节过程中不会出现较大偏差，保证送料轨迹调节的精度。
更加具体地说，上述第一调节组件10包括竖直设置的调节轴101以及穿设在调节轴101上的复位弹簧102，上述送料偏心凸轮5还包括与调节轴101端部配合的容纳槽53，调节轴101通过竖直运动将其下端部伸入设置于送料偏心凸轮5上端的容纳槽53，容纳槽53可以为截面为矩形的容纳槽，当然也可以设为其他形状；调节轴101伸入的同时顶开滑块7，使得原先保持锁死状态的抬牙偏心凸轮12与送料偏心凸轮5相分离，并且由于调节轴101的伸入，送料偏心凸轮5的轴向转动被限制。
调节完成后，松开调节轴101，调节轴101在复位弹簧102的作用下复位，复位弹簧102设置于调节轴101的外侧壁上，当按下调节轴101时，复位弹簧102被压缩，其底端抵住调节轴101的外侧壁，从而使得调节轴101可以竖直向下运动，而当释放对调节轴101的压力时，则复位弹簧102能够恢复至原长度，此时，调节轴101向上移动，并回归原位。
为了达到限定抬牙偏心凸轮12转动范围的目的，也为确保送料偏心凸轮5和抬牙偏心凸轮12的偏心夹角在一定范围内调节，见图8及图12所示，本实施例中在所述滑槽521的两侧壁上均设有突出的限位销8、9，所述抬牙偏心凸轮12的卡齿部122处设有突出的挡销6，所述挡销6位于两个限位销8、9之间，且限位销8、9用于止挡上述挡销6，即使抬牙偏心凸轮12相对送料偏心凸轮5的偏心调节范围。
上述两卡接凸起52上对称设置限位孔522，限位孔522配合连接上述限位销8、9；具体地，限位孔522设置于卡接凸起52在垂直于主轴3轴向的外侧壁上，同样的，限位孔522和配合连接的限位销8、9也是对称的设置于卡接凸起52的相应位置上。这样一来，当抬牙偏心凸轮12相对送料偏心凸轮5发生偏转时，其沿两侧的转动范围可以通过两对称设置的限位销8，以及挡销6来限定，通过挡销6与两限位销8的相继接触来阻挡抬牙偏心凸轮12沿其两侧的继续转动，也就是说，两限位销8和挡销6决定了抬牙偏心凸轮12相对送料偏心凸轮5沿其两侧转动的最大角度范围。当然，也可以有其他不同的设置方式，前提是达到限定抬牙偏心凸轮12转动范围的目的即可，此处本文将不再赘述。
见图8及图12所示，本实施例中的保持件为扭簧15，扭簧15的一端与所述送料偏心凸轮5(本实施例中扭簧的一端固定在上述限位销8上)相连，扭簧15的另一端与所述滑块7 相连；通过扭簧15的弹力保持滑块7与上述抬牙偏心凸轮12相啮合。具体地，可以在滑块7靠近锁止部72的位置设置卡接槽，用以卡接扭簧15一端的卡接头，相应地，可以在送料偏心凸轮5对应位置上设置螺钉，用以套设扭簧15达到固定扭簧15的目的；这样一来，通过扭簧15的回弹力可以使得滑块7和抬牙偏心凸轮12重新啮合锁紧。当然，根据实际需要，可以有其他不同的设置方式，前提是要在非调节状态下，达到滑块7和抬牙偏心凸轮12可以在外力作用下恢复到相互啮合的状态即可。
本实施例中送料装置的工作工程为：
正常情况下，滑块7在扭簧15作用下其锁止部72与卡齿部122相互啮合，此时抬牙偏心凸轮12与送料偏心凸轮5之间被相互锁死不发生偏转；
若手动按压调节轴101，使调节轴101的头部伸入容纳槽53中，使滑块7的锁止部72与卡齿部122分离，且送料偏心凸轮5可被调节轴101限制无法转动，转动手轮2可使抬牙偏心凸轮12与送料偏心凸轮5之间发生偏转；松开调节轴101，调节轴101在复位弹簧102作用下复位，滑块7在扭簧15作用下复位且锁止部72与卡齿部122重新啮合，使抬牙偏心凸轮12与送料偏心凸轮5之间被相互锁死。
即当需要调节送料牙齿轨迹时，只需通过按压调节轴101，转动主轴3，改变抬牙偏心凸轮12和送料偏心凸轮5的偏心夹角，即可完成了送料牙齿轨迹的改变。
实施例二
请参考图15至图18，图15为本发明的一种缝纫机的送料装置的实施例二结构示意图，图16为图15中离合机构的示意图，图17为图16中A处放大图，图18为图16中离合套的结构示意图。本实施例与实施例一不同之处主要在于离合机构，即实现抬牙偏心凸轮16和送料偏心凸轮17间的锁定和释放的具体结构不同。
本实施例中上述离合机构包括设于所述主轴3上且位于抬牙偏心凸轮16和送料偏心凸轮17间的离合套19，以及保持件和可调组件30；离合套19的侧面在保持件的保持下与所述抬牙偏心凸轮16的侧面吸合，且离合套19与所述送料偏心凸轮17周向限位配合；调节可调组件30拨动所述离合套19克服所述保持件的保持力轴向滑动，解除所述离合套19与所述抬牙偏心凸轮16的吸合。本实施例通过离合套19与所述送料偏心凸轮17周向限位配合，即离合套与所述送料偏心凸轮17同步转动，而离合套19与抬牙偏心凸轮16吸合，正常缝制时主轴3带动抬牙偏心凸轮16转动，进而通过离合套19带动送料偏心凸轮17转动；调节可调组件30，可使离合套19轴向滑动解除与抬牙偏心凸轮16的吸合，因此转动主轴3带动抬牙偏心 凸轮16转动，而离合套19与送料偏心凸轮17不动，进而改变了抬牙偏心凸轮16和送料偏心凸轮17间的相对角度，即其偏心夹角大小改变，也即实现了送布牙齿轨迹的改变。
本实施例中上述离合套19和所述抬牙偏心凸轮16通过摩擦吸合。具体可为：见图16及图17所示，本实施例在离合套19朝向抬牙偏心凸轮16的端面上设置摩擦片191，在抬牙偏心凸轮16朝向离合套19的端面上设置摩擦片161，通过两个摩擦片161、191之间的摩擦力使离合套19和所述抬牙偏心凸轮16吸合，实现两者的同步转动。
本实施例中上述离合套19和所述抬牙偏心凸轮16还可通过卡齿啮合。具体可为：见图19所示，本实施例在离合套19朝向抬牙偏心凸轮16的端面上设置卡齿部(未予图示)，在抬牙偏心凸轮16朝向离合套19的端面上设置齿槽162，通过卡齿部与齿槽162的啮合使离合套19和所述抬牙偏心凸轮16吸合，实现两者的同步转动。
上述离合套19和所述抬牙偏心凸轮16间的吸合不限于上述摩擦和卡齿啮合，其可为其他结构，只需两者间在吸合时可实现同步转动即可。
为实现上述离合套19和送料偏心凸轮17间的周向定位相连，见图16及图18所示，本实施例中在送料偏心凸轮17上设有轴销171，在离合套19上设有销孔192，轴销171插入销孔192内，通过轴销171与销孔192的配合实现离合套19和送料偏心凸轮17的周向定位，即离合套19转动时同时带动送料偏心凸轮17转动；而且销孔192满足离合套19在轴向滑动时送料偏心凸轮17不动。离合套19和送料偏心凸轮17间的周向定位相连不限于此，只需满足两者间同步转动且可轴向滑动即可。
为止挡上述送料偏心凸轮17轴向滑动，本实施例在上述主轴上设有限制送料偏心凸轮17轴向滑动的止挡块11，止挡块11与离合套19分别位于送料偏心凸轮17的两侧。
本实施例中上述保持件为弹簧18，其位于送料偏心凸轮17和离合套19之间，其给予离合套19向抬牙偏心凸轮16处的运动力，以保持抬牙偏心凸轮16和离合套19的吸合。
见图16所示，本实施例中上述可调组件30包括按钮301、转动设置的杠杆302，以及与杠杆302相连的复位弹簧303，见图18所示，上述离合套19上设有周向槽193，在周向槽193的侧壁上设有第一摩擦面305，上述杠杆302的一端位于按钮301的下方，杠杆302的另一端伸入上述周向槽193内，且杠杆302的另一端安装带有第二摩擦面304的挡销，按钮301下压可带动杠杆302转动，杠杆302转动使挡销向第一摩擦面305处运动，而第一摩擦面304与第二摩擦面305吸合进而使离合套19向远离抬牙偏心凸轮16的方向轴向运动，解除抬牙偏心凸轮16和离合套19间的吸合。本实施例通过杠杆原理，按压按钮301带动杠杆302转动，进而带动离合套19轴向滑动。而按钮301不受力时，复位弹簧303则使杠杆302复位解 除第一摩擦面304与第二摩擦面305的吸合。上述杠杆302与离合套19的配合不限于此，其也可以为杠杆302端部设有叉口而离合套的周向上设有凸起，凸起插设在叉口内，当杠杆转动时其可拨动离合套轴向运动，即杠杆302与离合套19的配合只需实现上述功能即可。
上述可调组件的结构不限于此，其只需能满足带动离合套19轴向滑动即可。
本实施例的送料装置其工作原理为：
正常情况下，离合机构即上述离合套19与抬牙偏心凸轮16处于“锁止”状态，送料偏心凸轮17和抬牙偏心凸轮16相对不发生转动。如离合套右侧的摩擦片191和抬牙偏心凸轮左侧的摩擦片161在弹簧18的作用下锁紧，此时抬牙偏心凸轮16与送料偏心凸轮17之间被相互锁死不发生偏转；
控制上述可调组件30，可以实现离合机构在“锁止”和“释放”两种状态之间切换。如若按压按钮301，使杠杆302绕铰接点顺时针转动，从而使第一摩擦面304与第二摩擦面305接触继而使摩擦片191和摩擦片161分离，使离合机构处于“释放”状态，该过程中离合套19被挡销171限位并沿轴向滑动。“释放”状态下，转动主轴3，抬牙偏心凸轮16随之转动，而送料偏心凸轮17由于第一摩擦面304与第二摩擦面305之间的阻滞作用被限制转动，从而使送料偏心凸轮17和抬牙偏心凸轮16之间的位置角度发生变化，即两者间的偏心夹角大小改变。
实施例三
本实施例是基于上述实施例一和实施例二的基础上，在主轴3上安装上述手轮201，手轮201固定于主轴3末端并用以控制主轴3与抬牙偏心凸轮12同步转动，本实施例中手轮201的周向上还设置有刻度2011，刻度2011用以对应抬牙偏心凸轮12与送料偏心凸轮5的偏心夹角大小；在机壳上设置有用以刻度2011的指示标记202。
为更好的了解目前所调整的送料牙齿轨迹为哪一种状态，见图8所示，本实施例刻度2011包括零刻度、正刻度和负刻度，零刻度位于正刻度和负刻度之间。在缝纫机的机壳上设置上述指示标记202，可通过指示标记202指向哪个刻度判断目前的送料牙齿轨迹。
调节过程中，指示标记202的尖端所指向的刻度2011，其对应了抬牙偏心凸轮12、16与送料偏心5、17的偏心夹角大小，当指示标记202指向“0”时，其送料牙齿轨迹对应图5所示的标准型轨迹。
在调节上述离合机构前后，送料牙齿的Y方向位移函数“SY-Φ”保持不变，即图4中的“SY-Φ”坐标中的曲线；当刻度2011指示为正刻度时，即送料牙齿偏心凸轮5与抬牙偏心 凸轮12间的偏心夹角变大，送料牙齿的X方向位移函数“SX-Φ”相对于函数“SY-Φ”的相位差ΔΦ增大，即比图4中的相位差ΔΦ大，从而使送料牙齿轨迹形状从图5所示的标准型轨迹向图13所示的远三角型轨迹转变；当刻度21指示为负刻度时，即送料牙齿偏心凸轮5与抬牙偏心凸轮12间的偏心夹角变小，送料牙齿的X方向位移函数“SX-Φ”相对于函数“SY-Φ”的相位差ΔΦ减小，即比图4中的相位差ΔΦ大，从而使牙齿轨迹形状从标准型轨迹向图14所示的近三角型轨迹转变。
当刻度2011指示为正刻度时，其送料牙齿轨迹对应图13所示的远三角型轨迹，在远三角型轨迹中，其中，a、b分别为点1和点2、点2和点3的水平方向距离，其a/b的比值大于“1”，即a比b大，随着指示标记202所指刻度值的增加其比值越大，该种形式轨迹在送料牙齿的送料前期其抬牙高度缓慢增加，对应送料力缓慢增加，在送料牙齿的送料后期其抬牙高度快速减少，对应送料力快速减少，有利于挑线杆收线，适合缝制较厚的布料；
当刻度2011指示为负刻度时，其送料牙齿轨迹对应图14所示的近三角型轨迹；在近三角型轨迹中，其a/b的比值小于“1”，即a比b小，随着指示标记202随着刻度数值的增加其比值越小，该种形式轨迹在送料牙齿的送料前期其抬牙高度快速增加，对应送料力快速增加，在送料牙齿的送料后期其抬牙高度缓慢减少，对应送料力缓慢减少，不容易产生起皱，适合缝制较薄的布料。
综上所述，本发明的缝纫机的送料装置及缝纫机，其抬牙偏心凸轮与送料偏心凸轮之间的位置角度可调，其不同的位置角度对应不同形式的送料轨迹，适应不同厚度的布料；可在三种送料轨迹之间方便切换，使得缝纫机对不同布料的适应性大大增强；操作方便，简单易懂，调节时不用拆开机体，通过调节定位可调组件、转动手轮即可实现。所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (15)

  1. 一种缝纫机的送料装置，其特征在于，包括：
    可转动的主轴；
    送料偏心组件，包括固定在主轴上的抬牙偏心凸轮、可转动地安装在主轴上的送料偏心凸轮，且所述送料偏心凸轮与所述抬牙偏心凸轮的相对角度可调，以实现送料轨迹的调节。
  2. 根据权利要求1所述的缝纫机的送料装置，其特征在于：所述送料偏心凸轮与所述抬牙偏心凸轮通过离合机构相连，离合机构将所述抬牙偏心凸轮和所述送料偏心凸轮保持锁止；调节离合机构可使所述抬牙偏心凸轮和所述送料偏心凸轮相对分离，分离时通过转动主轴调节抬牙偏心凸轮和送料偏心凸轮间的偏心夹角大小。
  3. 根据权利要求2所述的缝纫机的送料装置，其特征在于：所述抬牙偏心凸轮的外周面上设有卡齿部，所述送料偏心凸轮朝向所述抬牙偏心凸轮的一侧设有沿径向延伸的滑槽，所述离合机构包括滑块和定位滑块用的保持件，所述滑块滑动设于所述滑槽内、且具有锁止部，所述保持件使所述锁止部与所述卡齿部保持啮合；所述缝纫机的送料装置还包括第一调节组件，通过第一调节组件驱动滑块滑动，解除所述锁止部与所述卡齿部间的啮合。
  4. 根据权利要求3所述的缝纫机的送料装置，其特征在于：所述保持件为扭簧，扭簧的一端与所述送料偏心凸轮相连，扭簧的另一端与所述滑块相连。
  5. 根据权利要求3所述的缝纫机的送料装置，其特征在于：所述滑槽的两侧壁上均设有突出的限位销，所述抬牙偏心凸轮的卡齿部处设有突出的挡销，所述挡销位于两个限位销之间，且限位销用于止挡挡销。
  6. 根据权利要求3所述的缝纫机的送料装置，其特征在于：所述送料偏心凸轮上设有供所述调节轴插入的容纳槽。
  7. 根据权利要求3所述的缝纫机的送料装置，其特征在于：所述第一调节组件包括与滑槽平行、且可轴向运动的调节轴，以及穿设在调节轴上的复位弹簧。
  8. 根据权利要求2所述的缝纫机的送料装置，其特征在于：所述离合机构包括设于所述主轴上且位于抬牙偏心凸轮和送料偏心凸轮间的离合套，以及保持件和可调组件；离合套的侧面在保持件的保持下与所述抬牙偏心凸轮的侧面吸合，且离合套与所述送料偏心凸轮周向 限位配合；调节可调组件拨动所述离合套克服所述保持件的保持力轴向滑动，解除所述离合套与所述抬牙偏心凸轮的吸合。
  9. 根据权利要求8所述的缝纫机的送料装置，其特征在于：所述离合套和所述抬牙偏心凸轮通过摩擦吸合。
  10. 根据权利要求8所述的缝纫机的送料装置，其特征在于：所述离合套和所述抬牙偏心凸轮通过卡齿啮合。
  11. 根据权利要求8所述的缝纫机的送料装置，其特征在于：所述可调组件包括按钮、转动设置的杠杆、以及与杠杆相连的复位弹簧，所述杠杆的一端位于按钮的下方，杠杆的另一端与离合套配合相连；当按钮下压时可带动杠杆转动，杠杆转动使杠杆的另一端和离合套锁紧，进而使离合套沿轴向向远离抬牙偏心凸轮的方向运动，解除抬牙偏心凸轮和离合套间的吸合。
  12. 根据权利要求1所述的缝纫机的送料装置，其特征在于，所述主轴的端部设有手轮。
  13. 根据权利要求12所述的缝纫机的送料装置，其特征在于，所述手轮的周向上设有对应所述抬牙偏心凸轮与所述送料偏心凸轮偏心夹角大小的刻度，刻度包括零刻度、正刻度和负刻度，零刻度位于正刻度和负刻度之间。
  14. 一种缝纫机，其特征在于：所述缝纫机具有如权利要求1至权利要求12任一项所述的缝纫机的送料装置。
  15. 根据权利要求14所述的缝纫机，其特征在于：所述手轮的周向上设有刻度，刻度包括零刻度、正刻度和负刻度，零刻度位于正刻度和负刻度之间；所述缝纫机的机壳相对手轮处设有指示标记，
    当指示标记指向零刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，缝纫机的送料牙齿沿正椭圆轨迹运动，送料牙齿的X向位移与Y向位移偏差值为定值A；
    当指示标记指向正刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，所述送料牙齿的X向位移与Y向位移偏差值大于定值A；
    当指示标记指向负刻度处，所述抬牙偏心凸轮和所述送料偏心凸轮锁止时，所述送料牙齿 的X向位移与Y向位移偏差值小于定值A。
PCT/CN2019/113945 2018-07-11 2019-10-29 缝纫机的送料装置及缝纫机 WO2020134508A1 (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201810757301.7A CN108842311A (zh) 2018-07-11 2018-07-11 一种缝纫机及其送料装置
CN201811604245.X 2018-12-26
CN201811604245.XA CN109371575B (zh) 2018-07-11 2018-12-26 缝纫机的送料装置及缝纫机

Publications (1)

Publication Number Publication Date
WO2020134508A1 true WO2020134508A1 (zh) 2020-07-02

Family

ID=64196844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/113945 WO2020134508A1 (zh) 2018-07-11 2019-10-29 缝纫机的送料装置及缝纫机

Country Status (2)

Country Link
CN (2) CN108842311A (zh)
WO (1) WO2020134508A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108842311A (zh) * 2018-07-11 2018-11-20 杰克缝纫机股份有限公司 一种缝纫机及其送料装置
CN109505072B (zh) * 2019-01-14 2021-04-06 杰克缝纫机股份有限公司 缝纫机的送布机构及缝纫机
CN109706627B (zh) * 2019-01-14 2021-02-02 杰克缝纫机股份有限公司 一种缝纫机及其送料机构
CN109972299B (zh) * 2019-03-12 2021-12-21 杰克缝纫机股份有限公司 缝纫机的送布机构及缝纫机
CN109778436B (zh) * 2019-03-15 2021-02-05 杰克缝纫机股份有限公司 缝纫机的送布控制机构、缝纫机及送布控制方法
CN109750422B (zh) * 2019-03-15 2021-01-29 杰克缝纫机股份有限公司 缝纫机的送布机构及缝纫机
TWI720483B (zh) * 2019-05-17 2021-03-01 精機機械廠股份有限公司 縫紉機之進布軌跡導正裝置
CN110670248A (zh) * 2019-11-08 2020-01-10 杰克缝纫机股份有限公司 可调节的送布机构及缝纫机
CN111020892B (zh) * 2019-12-18 2022-06-21 杰克科技股份有限公司 牙齿轨迹可调的缝纫机
CN114000266B (zh) * 2020-07-28 2023-06-09 杰克科技股份有限公司 一种缝纫机送布机构中的调节结构
CN116357085A (zh) * 2023-03-30 2023-06-30 中建八局发展建设有限公司 一种大型多层屋面管桁架施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598995A (ja) * 1982-07-08 1984-01-18 アイシン精機株式会社 ミシンの送り歯調整機構
JPH0424061A (ja) * 1990-05-18 1992-01-28 Brother Ind Ltd ミシンの送りピッチ検出装置
CN202039191U (zh) * 2010-12-10 2011-11-16 精机机械厂股份有限公司 缝纫机上辅助送布爪的摆动行程调整装置
CN106637707A (zh) * 2016-12-19 2017-05-10 杰克缝纫机股份有限公司 缝纫机送布机构
CN107558014A (zh) * 2017-09-19 2018-01-09 杰克缝纫机股份有限公司 一种送布机构及缝纫机
CN109371575A (zh) * 2018-07-11 2019-02-22 杰克缝纫机股份有限公司 缝纫机的送料装置及缝纫机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3276843B2 (ja) * 1996-05-13 2002-04-22 ブラザー工業株式会社 偏心輪装置における偏心量調節装置
JP2000042270A (ja) * 1998-07-31 2000-02-15 Juki Corp ミシンの布送り機構
CN201952612U (zh) * 2010-12-10 2011-08-31 精机机械厂股份有限公司 下送布齿进给调整机构
CN103374794B (zh) * 2012-04-20 2017-05-10 Juki株式会社 缝纫机的布料进给机构
CN107090670B (zh) * 2017-07-05 2020-08-21 杰克缝纫机股份有限公司 一种厚料缝纫机
CN107447377B (zh) * 2017-09-19 2020-07-07 杰克缝纫机股份有限公司 一种缝纫机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598995A (ja) * 1982-07-08 1984-01-18 アイシン精機株式会社 ミシンの送り歯調整機構
JPH0424061A (ja) * 1990-05-18 1992-01-28 Brother Ind Ltd ミシンの送りピッチ検出装置
CN202039191U (zh) * 2010-12-10 2011-11-16 精机机械厂股份有限公司 缝纫机上辅助送布爪的摆动行程调整装置
CN106637707A (zh) * 2016-12-19 2017-05-10 杰克缝纫机股份有限公司 缝纫机送布机构
CN107558014A (zh) * 2017-09-19 2018-01-09 杰克缝纫机股份有限公司 一种送布机构及缝纫机
CN109371575A (zh) * 2018-07-11 2019-02-22 杰克缝纫机股份有限公司 缝纫机的送料装置及缝纫机

Also Published As

Publication number Publication date
CN108842311A (zh) 2018-11-20
CN109371575B (zh) 2021-02-26
CN109371575A (zh) 2019-02-22

Similar Documents

Publication Publication Date Title
WO2020134508A1 (zh) 缝纫机的送料装置及缝纫机
WO2020147585A1 (zh) 缝纫机的送布机构及缝纫机
CN109778436B (zh) 缝纫机的送布控制机构、缝纫机及送布控制方法
CN110670248A (zh) 可调节的送布机构及缝纫机
CN208183241U (zh) 一种缝纫机送料牙高度简易调节装置及缝纫机
US8701577B2 (en) Sewing machine with an adjusting structure capable of controlling a swing center of a swing arm
CN107044005B (zh) 一种带自动对边机构的缝纫机
JP2714886B2 (ja) ミシン
CN108118454B (zh) 一种可快速离合的调节旋钮及抬压脚高度调节机构
CN204849304U (zh) 一种带有电子调针距机构的工业平缝机
CN209353052U (zh) 送布牙架调节机构及使用该机构的包缝机
CN111020891A (zh) 缝纫机、送料切换装置、送料切换控制系统和控制方法
US2235552A (en) Sewing machine
CN109972299B (zh) 缝纫机的送布机构及缝纫机
CN108118457B (zh) 一种抬压脚高度调节机构及锁眼机
CN111020892B (zh) 牙齿轨迹可调的缝纫机
CN211734681U (zh) 缝纫机的送料机构
CN108118450B (zh) 一种锁眼机
CN221854939U (zh) 一种防划伤三角座及针织圆机
CN210945977U (zh) 送布轨迹可调的缝纫机
JPH038228Y2 (zh)
TWI801995B (zh) 縫紉機之壓腳裝置
JP2635785B2 (ja) サイクルミシンにおける送り量調節装置
JPS5934449Y2 (ja) 電子ミシンの送り機構
CN111350033A (zh) 一种缝纫机及其送布牙调节机构

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19904465

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19904465

Country of ref document: EP

Kind code of ref document: A1