CN209144401U - A kind of anti-Bird's Nest structure of sewing machine - Google Patents

Abstract

The utility model provides a kind of anti-Bird's Nest structure of sewing machine, belongs to clothes manufacturing equipment technical field.The anti-Bird's Nest structure that it solves existing sewing machine uses the technical problems such as unreliable.This sewing machine includes the pressure foot of head, the presser bar being arranged on head and presser bar lower end, this anti-Bird's Nest structure includes the hooking plate being arranged on head, it the front end of hooking plate can be mobile towards pressure foot direction, set flexible tension disc on hooking plate, the side of hooking plate and tension disc is additionally provided with the suction nozzle that can siphon away the end of a thread between the two；Central wire casing is offered in the middle part of pressure foot, slot bottom on pressure foot positioned at Central Line's slot offers the crossed beam trunking being connected with central wire casing, and the top of crossed beam trunking is equipped with cutting tip and cutting tip is one of fusing head, heating wire, laser head or ultrasonic cutting knife.This anti-Bird's Nest structure can cut the end of a thread of suture reliably precisely to which off-line when preventing sewing machine seam and the end of a thread on sewing remain.

Description

A kind of anti-Bird's Nest structure of sewing machine

Technical field

The utility model belongs to clothes manufacturing equipment technical field, is related to a kind of sewing machine, especially a kind of sewing machine Anti- Bird's Nest structure.

Background technique

Sewing machine is formed one or more stitchings on sewing, is made one or more layers seam with one or more sewing thread The machine that material interweaves or unites by a seam.Fabrics and leather, plastics, the paper such as function of sewing sewing cotton, fiber crops, silk, hair, staple fibre Equal products, the stitching neat appearance stitched out, it is smooth securely, sewing velocity is fast, uses simplicity.When sewing machine sewing cloth, start There are the end of a thread of certain length at eedle pinprick for needs when sewing, and the end of a thread will not take off from eedle pinprick when having guaranteed seam Out.The end of a thread of certain length returns when playing seam and stays in cloth sewing initial position formation " Bird's Nest " on eedle pinprick, influences sewing Beauty.In order to avoid there is Bird's Nest phenomenon, it usually needs use anti-Bird's Nest structure.There is a kind of anti-Bird's Nest knot in industry at present The end of a thread is clamped by wire-clamping device, blade is arranged on presser feet by structure, and pullling by wire-clamping device and sewing, makes when playing seam It is cut off on the top presser feet edge of a knife of the end of a thread, solves the problems, such as " Bird's Nest ".But it is this with knife presser feet since the edge of a knife of slit aperture is from falling needle Hole is close, and suture head is just cut off together, and thin material sewing is that sewing machine is easily caused to play seam off-line.Meanwhile presser feet installs blade This structure can not cut compared with tailor-tacking line；Cutting edge is thin, can not also use for a long time；In addition, feeding power cuts off suture, cut Line position, needle secant distance of disembarking are not fixed, often can there are the end of a thread, the end of a thread hair on sewing；A variety of presser feets can not install blade The defects of, cause anti-Bird's Nest function to use poor, part still needs manually to trim the end of a thread manually.

Chinese patent (publication number: CN204959274U, authorized announcement date: 2016-01-13) discloses a kind of flat seam machine Anti- Bird's Nest structure, including mounting rack, actuator and tool apron, tool apron are slidably connected on mounting rack, are connected on the output shaft of actuator It is connected to swing connecting bar and actuator is able to drive swing connecting bar swing, swing connecting bar is connected with tool apron and swing connecting bar swings energy Enough tool apron is driven to move linearly on mounting rack, anti-Bird's Nest structure further includes that can adjust the limit of the amplitude of fluctuation of swing connecting bar Part；It is installed with stationary knife on mounting rack, moving knife is installed on tool apron, moving knife can form shearing fortune with tool apron movement with stationary knife Dynamic, the end of moving knife also has the coupler body for hook line.

Anti- Bird's Nest structural volume in above patent document is larger, is easy to be formed with eedle and interfere, and is not easy precisely to control On the end of a thread trimming opportunity processed, the end of a thread residual is longer, influences sewing beauty, and the end of a thread in addition cut can not be cleared up quickly, Influence the reuse of anti-Bird's Nest structure and the cleanliness of sewing.

Summary of the invention

The utility model aiming at the above problems existing in the prior art, provides a kind of anti-Bird's Nest structure of sewing machine, this Utility model the technical problem to be solved is that: how it is more accurate it is reliable cut suture the end of a thread to prevent sewing machine rise The end of a thread residual when seam on off-line and sewing.

The purpose of this utility model can be realized by the following technical scheme:

A kind of anti-Bird's Nest structure of sewing machine, sewing machine include head, the presser bar and presser bar that are arranged on head The pressure foot of lower end, which is characterized in that the anti-Bird's Nest structure includes the hooking plate being arranged on head and flexible The front end of tension disc, the hooking plate can be mobile towards the pressure foot direction, and the side of the hooking plate and tension disc is also Equipped with the suction nozzle that can siphon away the end of a thread between the two；Central wire casing, the pressure foot are offered in the middle part of the pressure foot The upper slot bottom positioned at the central wire casing offers the crossed beam trunking being connected with central wire casing, and the top of the crossed beam trunking, which is equipped with, cuts Broken end and the cutting tip are one of fusing head, heating wire, laser head or ultrasonic cutting knife.

The principle is as follows: pressure foot is used for normal binder, and the central wire casing on pressure foot is used for for eedle and normal suture It passes through, is provided with crossed beam trunking in the central wire casing side of pressure foot, the circular arc of the centrally located wire casing in open end keeps off line end, clearing end Positioned at crossing in the middle part of line for pressure foot, suture the end of a thread can import crossed beam trunking from central wire casing；Hooking plate hooks after sewing trimming The end of a thread is played, and clamps the end of a thread with clamp cooperation, suture head oblique pull will be played in side, oblique pull angled with eedle axle center The end of a thread rise seam when enter crossed beam trunking；Independent cutting facility is housed above the crossed beam trunking of pressure foot in the technical program, it should Cutting facility is the cutting tip that fusing head, heating wire, laser head or ultrasonic cutting knife are formed, can be in certain distance effectively Suture is cut off, cutting tip is cut using thermal energy, and the end of a thread fracture is in semi-molten state, and notch is neat, and broken string is accurate thorough, can be more Effective solution plays seam Bird's Nest problem.After sewing machine completes sewing trimming, suture is remained the end of a thread by hooking plate to be ticked and is clipped in hooking Between plate and tension disc, then suture is remained by the end of a thread by suction nozzle and is siphoned away, guarantees clean working environment.

Low-power consumption standby state is connected after sewing-machine control systems booting or entered to cutting tip, acts pressure foot before stitching and lifts Or sewing machine starting sewing, sewing-machine control systems connect cutting tip signal, cutting tip enters normal tangent line state, and sewing machine is held After reforwarding takes two turns, cutting tip is again introduced into connection or low-power consumption standby state, is controlled by break time, guarantees the steady of tangent line It is qualitative.

The anti-Bird's Nest structure of this sewing machine, by electronics clamp loose ends time coordination, realizes sufficiently stable line when playing seam Amount supply, the end of a thread clamped are reached below cutting tip by the crossed beam trunking on pressure foot during sewing, are cut using special Line apparatus cuts off suture, and there are shorter the end of a thread on sewing, and the second needle or third needle will be remained by electronics clamp after starting The end of a thread further shortens or brings into below sewing, thoroughly solves the problems, such as Bird's Nest the end of a thread.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the lower end of the presser bar is installed with presser feet handle, the presser feet handle Lower end be equipped with articulated shaft, the upside of the pressure foot is hinged on the articulated shaft by interconnecting piece；Under the presser bar End is fixedly provided with mounting base, the fixed cutting tip in the lower end of the mounting base.After the cut-off head of suture the end of a thread is cut off, due to cutting Broken end is that thermal energy is cut, and rapidly, the end of a thread curling sealing, shorter the end of a thread remains in above sewing after cutting for cutting.

Cutting tip can also be integrally formed with mounting base, also may be mounted at head other positions, or can be along presser bar side It moves up and down, but the taking tangential sections of cutting tip are located above crossed beam trunking.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the upper end of the mounting base is fixed on described by connection bolt one On presser bar, the lower end of the mounting base offers waist-shaped hole, and the waist-shaped hole is laterally arranged, the company of being inserted in the waist-shaped hole The upper end of connecting bolt two, the cutting tip is connected in the mounting base by the connection bolt two, under the cutting tip End has downward opening fluting, and the opening of the fluting has fuse part.Fuse part is in cylindric, the fuse part two of strip End is connected to the two sides of fluting, and fuse part is fused the end of a thread by the energy that electric heating, laser or ultrasonic wave generate.Utilize above-mentioned setting Waist-shaped hole, secant position can effectively be adjusted according to needle gage size, not limited by pressure foot and suture thickness；Applicability is more By force.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the slot bottom of the center wire casing is arc-shaped, and the crossed beam trunking has One end of opening is located at the side of the central wire casing slot bottom, and the other end of the crossed beam trunking is towards the central wire casing middle line Extended line direction extends.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the side of the hooking plate offers hook slot, on the hooking plate With from end to the guide angle with the side arc extension for hooking slot；The tension disc sticks on the upside of the hooking plate, The end of the tension disc has the guide part tilted obliquely.It can guarantee the smoothness of hooking plate hooking and reliable in this way Property.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the head of the sewing machine is equipped with mounting bracket, the installation branch Frame is equipped with rotation axis, and one end of the rotation axis is connect with the end of the hooking plate；Drive is additionally provided in the mounting bracket Move the actuator of the rotation axis reciprocating rotation.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the actuator is electromagnet, is connected on the iron core of electromagnet The middle part of driver plate, the driver plate is connected in the mounting bracket by axial screw, one end of the driver plate and institute Electromagnet connection is stated, the other end of the driver plate is hinged with connecting rod, and the end of the connecting rod passes through connecting plate and the rotation Axis is connected, and the axial screw is equipped with the torsional spring that can make to be driven sheet reset.

In the anti-Bird's Nest structure of above-mentioned sewing machine, the suction nozzle includes fixed plate, the air draught connected with fixed plate Pipe and positioned at the air inlet of air draught tube end, the air inlet is towards the hooking plate and tension disc.

Compared with prior art, having the advantage that in the utility model

1, the cutting tip in the utility model is fusing tangent line or laser thread cutter, the different multiple types of cleavable thickness Suture, since thermal energy tangent line does not have the hysteresis quality of blade machinery tangent line, tangent line remains the end of a thread length and neatly stablizes, and solves existing knife The phenomenon that piece tangent line length is unstable, tangent line hair.

2, for the anti-Bird's Nest structure in the utility model after sewing machine completes sewing trimming, suture is remained the end of a thread by hooking plate It ticks and is clipped between hooking plate and tension disc, then suture is remained by the end of a thread by suction nozzle and is siphoned away, guarantee clean working environment.

3, cutting tip is independently installed in the mounting base of presser bar lower end in the utility model, is not installed blade by pressure foot Limitation, it is applied widely, cutting tip can far from and close to eedle direction make applicability adjustment, be suitable for differing needles away from not With sewing range sewing requirement, solve the problems, such as it is existing cannot be general with knife presser feet.

Detailed description of the invention

Fig. 1 is this using state structure diagram of anti-Bird's Nest structure in sewing machine.

Fig. 2 is the partial enlargement structural representation in Fig. 1 at A.

Fig. 3 is the dependency structure schematic diagram of hooking plate in this anti-Bird's Nest structure, tension disc and suction nozzle.

Fig. 4 is the driving structure schematic diagram of hooking plate in this anti-Bird's Nest structure.

Fig. 5 is pressure foot and the dependency structure schematic diagram of cutting tip in this anti-Bird's Nest structure.

In figure, 1, head；2, presser bar；3, pressure foot；31, central wire casing；32, crossed beam trunking；33, interconnecting piece；4, hooking Plate；41, slot is hooked；42, guide angle；5, tension disc；51, guide part；6, suction nozzle；61, aspiration channel；62, air inlet；63, fixed Plate；7, cutting tip；71, it slots；72, fuse part；8, articulated shaft；9, mounting base；91, waist-shaped hole；10, presser feet handle；11, spiral shell is connected Bolt one；12, bolt two is connected；13, mounting bracket；14, rotation axis；15, actuator；15a, electromagnet；16, driver plate；17, axis Position screw；18, connecting rod；19, connecting plate；20, torsional spring.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

If 1 to shown in Fig. 5, this sewing machine includes 2 lower end of head 1, the presser bar being arranged on head 12 and presser bar Pressure foot 3, anti-Bird's Nest structure includes the hooking plate 4 and flexible tension disc 5 being arranged on head 1, hooking plate 4 Front end can be mobile towards 3 direction of pressure foot, and the side of hooking plate 4 and tension disc 5 is additionally provided with the line that can be siphoned away between the two The suction nozzle 6 of head；Suction nozzle 6 includes fixed plate 63 and the connected aspiration channel 61 of fixed plate 63 and is located at 61 end of aspiration channel Air inlet 62, air inlet 62 is towards hooking plate 4 and tension disc 5；The middle part of pressure foot 3 offers central wire casing 31, pressure foot 3 The upper slot bottom positioned at Central Line's slot 31 offers the crossed beam trunking 32 being connected with central wire casing 31, and the top of crossed beam trunking 32, which is equipped with, cuts Broken end 7 and cutting tip 7 are one of fusing head, heating wire, laser head or ultrasonic cutting knife.Further, such as Fig. 4 institute Show, the head 1 of sewing machine is equipped with mounting bracket 13, and mounting bracket 13 is equipped with rotation axis 14, one end of rotation axis 14 and hooking The end of plate 4 connects；The actuator 15 of driving 14 reciprocating rotation of rotation axis is additionally provided in mounting bracket 13.It is driven in the present embodiment Part 15 is electromagnet 15a, and driver plate 16 is connected on the iron core of electromagnet 15a, and the middle part of driver plate 16 passes through axial screw 17 It is connected in mounting bracket 13, one end of driver plate 16 is connect with electromagnet 15a, and the other end of driver plate 16 is hinged with connecting rod 18, the end of connecting rod 18 is connected by connecting plate 19 with rotation axis 14, and axial screw 17, which is equipped with, can make driver plate 16 multiple The torsional spring 20 of position.

Pressure foot 3 is used for normal binder in the present embodiment, and the central wire casing 31 on pressure foot 3 is used for for eedle and normal seam Line passes through, and is provided with crossed beam trunking 32 in 31 side of central wire casing of pressure foot 3, the circular arc of the centrally located wire casing 31 in open end keeps off line End, clearing end are located in the middle part of the line excessively of pressure foot 3, and suture the end of a thread can import crossed beam trunking 32 from central wire casing 31；Sew trimming After hooking plate 4 trigger the end of a thread, and clamp the end of a thread with clamp cooperation, suture head oblique pull will be played in side, with eedle axle center Angled, the end of a thread of oblique pull enters crossed beam trunking 32 when playing seam；It is filled above the crossed beam trunking 32 of pressure foot 3 in the technical program There is independent cutting facility, which is the cutting tip 7 that fusing head, heating wire, laser head or ultrasonic cutting knife are formed, It can effectively cut off suture in certain distance, and cutting tip 7 is cut using thermal energy, and the end of a thread fracture is in semi-molten state, notch Neatly, broken string is accurate thorough, can more effectively solve the problems, such as seam Bird's Nest.After sewing machine completes sewing trimming, hooking plate 4 will be stitched Line, which remains the end of a thread, to be ticked and is clipped between hooking plate 4 and tension disc 5, then suture is remained the end of a thread by suction nozzle 6 and is siphoned away, and is guaranteed clean Net working environment.

Low-power consumption standby state is connected after sewing-machine control systems booting or entered to cutting tip 7, acts pressure foot 3 before stitching and lifts It rises or sewing machine starting sewing, sewing-machine control systems connects 7 signal of cutting tip, cutting tip 7 enters normal tangent line state, sewing After machine continuous running two is enclosed, cutting tip 7 is again introduced into connection or low-power consumption standby state, is controlled by break time, guarantees to cut The stability of line.

The anti-Bird's Nest structure of this sewing machine, by electronics clamp loose ends time coordination, realizes sufficiently stable line when playing seam Amount supply, the end of a thread clamped are reached below cutting tip 7 during sewing by the crossed beam trunking 32 on pressure foot 3, and use is special Thread cutter cut off suture, there are shorter the end of a thread on sewing, after starting the second needle or third needle pass through electronics clamp will Residual the end of a thread further shortens or brings into below sewing, thoroughly solves the problems, such as Bird's Nest the end of a thread.

Further, as shown in Figure 2 and Figure 5, the lower end of presser bar 2 is installed with presser feet handle 10, and the lower end of presser feet handle 10 is set There is articulated shaft 8, the upside of pressure foot 3 is hinged on articulated shaft 8 by interconnecting piece 33；The lower end of presser bar 2 is fixedly provided with installation Seat 9, the fixed cutting tip 7 in the lower end of mounting base 9；After the cut-off head 7 of suture the end of a thread is cut off, since cutting tip 7 is thermal energy cutting, cut It cuts rapidly, the end of a thread curling sealing, shorter the end of a thread remains in above sewing after cutting；The upper end of mounting base 9 passes through connection bolt One 11 are fixed on presser bar 2, and the lower end of mounting base 9 offers waist-shaped hole 91, the laterally setting of waist-shaped hole 91,91 interpolation of waist-shaped hole Equipped with connection bolt 2 12, the upper end of cutting tip 7 is connected in mounting base 9 by connecting bolt 2 12, the lower end tool of cutting tip 7 Have it is downward opening fluting 71, slot 71 opening have fuse part 72；Fuse part 72 is in cylindric, the fuse part 72 of strip Both ends are connected to the two sides of fluting 71, and fuse part 72 is fused the end of a thread by the energy that electric heating, laser or ultrasonic wave generate；Using upper The waist-shaped hole 91 of setting is stated, secant position can effectively be adjusted according to needle gage size, not by the limit of pressure foot 3 and suture thickness System；Applicability is stronger.

As shown in figure 5, the slot bottom of central wire casing 31 is arc-shaped, crossed beam trunking 32 has the centrally located wire casing 31 in one end of opening The extended line direction of the side of slot bottom, the other end towards 31 middle line of central wire casing of crossed beam trunking 32 extends.

As shown in figure 3, the side of hooking plate 4, which offers, hooks slot 41, with from end to hook slot 41 on hooking plate 4 The guide angle 42 that side arc extends；Tension disc 5 sticks on the upside of hooking plate 4, and the end of tension disc 5 has to tilt obliquely Guide part 51；It can guarantee the smoothness and reliability of 4 hooking of hooking plate in this way.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Although 1, head is used more herein；2, presser bar；3, pressure foot；31, central wire casing；32, crossed beam trunking； 33, interconnecting piece；4, hooking plate；41, slot is hooked；42, guide angle；5, tension disc；51, guide part；6, suction nozzle；61, aspiration channel； 62, air inlet；63, fixed plate；7, cutting tip；71, it slots；72, fuse part；8, articulated shaft；9, mounting base；91, waist-shaped hole； 10, presser feet handle；11, bolt one is connected；12, bolt two is connected；13, mounting bracket；14, rotation axis；15, actuator；15a, electricity Magnet；16, driver plate；17, axial screw；18, connecting rod；19, connecting plate；20, the terms such as torsional spring, but be not precluded using other A possibility that term.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；Them It is contrary to the spirit of the present invention for being construed to any additional limitation all.

Claims (8)

1. a kind of anti-Bird's Nest structure of sewing machine, sewing machine include head (1), the presser bar (2) being arranged on head (1) and The pressure foot (3) of presser bar (2) lower end, which is characterized in that the anti-Bird's Nest structure includes the hooking plate being arranged on head (1) (4) and flexible tension disc (5), the front end of the hooking plate (4) can be moved towards the pressure foot (3) direction, The side of the hooking plate (4) and tension disc (5) is additionally provided with the suction nozzle (6) that can siphon away the end of a thread between the two；The pressure It is offered in the middle part of sole (3) central wire casing (31), the slot bottom that the central wire casing (31) is located on the pressure foot (3) opens up There is a crossed beam trunking (32) being connected with central wire casing (31), the top of the crossed beam trunking (32) is equipped with cutting tip (7) and described cuts Break end (7) for one of fusing head, heating wire, laser head or ultrasonic cutting knife.

2. the anti-Bird's Nest structure of sewing machine according to claim 1, which is characterized in that the lower end of the presser bar (2) is solid Equipped with presser feet handle (10), the lower end of the presser feet handle (10) is equipped with articulated shaft (8), passes through connection on the upside of the pressure foot (3) Portion (33) is hinged on the articulated shaft (8)；The lower end of the presser bar (2) is fixedly provided with mounting base (9), the mounting base (9) the fixed cutting tip (7) in lower end.

3. the anti-Bird's Nest structure of sewing machine according to claim 2, which is characterized in that the upper end of the mounting base (9) is logical It crosses connection bolt one (11) to be fixed on the presser bar (2), the lower end of the mounting base (9) offers waist-shaped hole (91), institute It states waist-shaped hole (91) to be laterally arranged, connection bolt two (12), the upper end of the cutting tip (7) is inserted in the waist-shaped hole (91) It is connected on the mounting base (9) by the connection bolt two (12), the lower end of the cutting tip (7) has downward opening It slots (71), the opening of the fluting (71) has fuse part (72).

4. the anti-Bird's Nest structure of sewing machine according to claim 1 or 2 or 3, which is characterized in that the center wire casing (31) Slot bottom it is arc-shaped, the side that there is the crossed beam trunking (32) one end of opening to be located at described central wire casing (31) slot bottom is described The extended line direction of the other end of crossed beam trunking (32) towards described central wire casing (31) middle line extends.

5. the anti-Bird's Nest structure of sewing machine according to claim 3, which is characterized in that open the side of the hooking plate (4) Equipped with slot (41) are hooked, with the guide angle extended from end to the side arc with hook slot (41) on the hooking plate (4) (42)；The tension disc (5) sticks on the upside of the hooking plate (4), and the end of the tension disc (5) has to tilt obliquely Guide part (51).

6. the anti-Bird's Nest structure of sewing machine according to claim 1 or 2 or 3, which is characterized in that the head of the sewing machine (1) mounting bracket (13) are equipped with, the mounting bracket (13) is equipped with rotation axis (14), one end of the rotation axis (14) and institute State the end connection of hooking plate (4)；The drive for driving rotation axis (14) reciprocating rotation is additionally provided on the mounting bracket (13) Moving part (15).

7. the anti-Bird's Nest structure of sewing machine according to claim 6, which is characterized in that the actuator (15) is electromagnet (15a) is connected with driver plate (16) on the iron core of electromagnet (15a), passes through axial screw in the middle part of the driver plate (16) (17) it is connected on the mounting bracket (13), one end of the driver plate (16) is connect with the electromagnet (15a), the biography The other end of movable plate (16) is hinged with connecting rod (18), and the end of the connecting rod (18) passes through connecting plate (19) and the rotation axis (14) it is connected, the axial screw (17) is equipped with the torsional spring (20) that driver plate (16) can be made to reset.

8. the anti-Bird's Nest structure of sewing machine according to claim 4, which is characterized in that the suction nozzle (6) includes fixing Plate (63), the aspiration channel (61) being connected with fixed plate (63) and the air inlet (62) for being located at aspiration channel (61) end, the suction Air port (62) is towards the hooking plate (4) and tension disc (5).