CN1333127C - Serging sewing machine and method for forming serging sewing - Google Patents

Abstract

Provided is a serging sewing machine and a method for forming serging sewing, the stitches are formed while the needle location points N1, N2, N3, etc., are changed in the direction intersecting with the cloth feed direction in the formation of the edge over cast stitches by a needle 8 and loopers 16 and 20.

Description

The formation method of serging machine and serging sewing

Technical field

The present invention relates to the formation method of a kind of serging machine and serging sewing.

Background technology

In general, serging sewing is that the stitching that make with upper thread and bottom line the end of the sewing that will be simultaneously cut off with cutting knife by the serging machine of the eedle with regulation number and reach the standard grade shuttle, the shuttle that rolls off the production line etc. encases and forms.And, according to the radical of used eedle and the radical of upper thread and bottom line, binds such as 1 pin, 2 lines, 1 pin, 3 lines, 2 pins, 4 lines are arranged.

Below, the action of the serging machine of 1 pin, 3 lines is described with Fig. 9～Figure 11.What Fig. 9 (A) represented is that eedle 8 penetrates the state that sewing W is in from the position of descending most point to rise a little and forms the wire loop of upper thread 76.In this moment, the reach the standard grade shuttle 16 and the shuttle 20 that rolls off the production line begin to do forward travel respectively.Shown in Fig. 9 (B), the shuttle 20 that rolls off the production line advances then, enters in the wire loop 76A of upper thread.

Then, shown in Figure 10 (A), sewing W is carried along the arrow directions X, and eedle 8 continues to rise by not shown cloth feeding mechanism.On the shuttle 16,20 that rolls off the production line also move on, the shuttle 16 of reaching the standard grade in it advances the way hooks the shuttle thread 18 that rolls off the production line.Enter the state shown in Figure 10 (B) then, eedle 8 begins to descend from the stop of the top, and the shuttle 16,20 that rolls off the production line on simultaneously begins to retreat.At this moment, eedle 8 hooks the shuttle thread 14 of reaching the standard grade.Then as shown in figure 11, eedle 8 continues to descend, and the shuttle 16,20 that rolls off the production line on simultaneously continues to do setback, and the shuttle thread 18 that rolls off the production line leaves the shuttle 16 of reaching the standard grade that is hooked, and because the upper thread wire loop 76A that further retreats of the shuttle 20 that rolls off the production line leaves the shuttle 20 and retreating of rolling off the production line that is hooked.Carry out above action repeatedly, form continuous stitching.

From the Figure 12 on expression sewing plane, can obviously find out, serging sewing in the past, the cloth end Wa of the sewing W that it cuts off with cutting knife and each needle falling point N1, N2, N3 ... between distance D be certain, so upper thread 76 sews up with the straight line of the cloth end Wa that is parallel to sewing W.

And, in serging machine in the past, for making from the cloth end to the variable in distance the eedle, can along continuous straight runs to move the needling position of adjusting eedle 8 known.

But, as in the past can mobile eedle Sewing machines, be eedle in case fixing just moving up and down and form stitching on its fixed position, can not in sewing, carry out change in location.So serging machine in the past can not be decorated lock seaming, promptly can not make the shape that resembles fan-shaped.

And, when the change locking edge width is sewed in the operation way of serging sewing, temporarily shut down in sewing midway, change the needling position of eedle as previously mentioned earlier, then owing to starting Sewing machines once more, so operating efficiency obviously reduces.

Summary of the invention

The object of the invention provides a kind of serging machine, can form the lock seaming stitching with above-mentioned pattern.

Another object of the present invention provides a kind of serging sewing stitching, changes along the vertical direction with cloth feeding direction by make needle falling point in sewing, forms the pattern stitching.

Another purpose of the present invention provides a kind of serging machine, does not stop just can to change the driving of Sewing machines the width of lock seaming in sewing.

For achieving the above object, 1 lock seaming eye Sewing machines according to the present invention is along forming the lock seaming stitching on the end margin of the cloth of cloth feeding direction by moving up and down eedle and the line shuttle that shakes, eedle swing mechanism (36,38,80) that connects can change the swing position of eedle in the prescribed limit on cloth feeding direction and described eedle during the top position of cloth, make the actuating mechanism of described eedle swing mechanism action, can form the lock seaming stitching simultaneously in Sewing machines change locking edge width in service; Described actuating mechanism has: detect one of the machine spindle of described eedle when the top position of cloth rotate in the phase-detection mechanism (77) of phase place; The driving mechanism (56,86) that in described phase-detection mechanism detected phase, moves; Connect the bindiny mechanism (60,62,64,83,85) between described eedle swing mechanism and driving mechanism; On regulation eedle swing position, set the controlling organization of the actuating quantity of described driving mechanism for making the eedle swing position.

1 serging machine according to the present invention, in sewing, make described eedle with the vertical direction of cloth feeding direction on change, make locking edge width form lock seaming can be by each regulation stitch or pattern unit change the time, so, no matter be automatically or manually, can both realize the serging sewing of pattern form, and, in sewing, do not stop can changing locking edge width to the driving of Sewing machines yet.And, can automatically change the pattern form and the locking edge width of serging sewing.

And 2 serging machine according to the present invention is that described eedle swing mechanism moves horizontally described eedle on described vertical direction in the present invention's 1 serging machine.

Like this, the line shuttle mechanism just can be realized the pattern form of serging sewing with general structure.

And 3 serging machine according to the present invention is that described actuating mechanism is swung described eedle swing mechanism each pin number in accordance with regulations in the present invention's 1 serging machine.

Like this, can change its locking edge width to each stitch of regulation pin number.

And 4 serging machine according to the present invention is that described actuating mechanism makes described eedle swing mechanism pattern unit's perseveration in accordance with regulations in the present invention's 1 serging machine.

Like this, can form the lock seaming stitching of various pattern forms.

And, 5 serging sewing formation method according to the present invention, when lockstitching a border stitching with the line shuttle that shakes along formation on the lateral edges of cloth feeding direction at cloth by moving up and down eedle, in the circle that machine spindle rotates, eedle be in cloth above during carry out locking edge width and change, form the lock seaming stitching simultaneously.

Like this, because the width of each stitch of pin number or pattern unit change lock seaming stitching in accordance with regulations, so, can realize in sewing, not stopping the serging sewing of pattern form Sewing machines simultaneously and also can change locking edge width.

And 6 serging sewing formation methods according to the present invention are in the present invention's 5 serging sewing formation method, and each pin number to regulation changes described needle falling point.

Like this, can change locking edge width to each stitch of regulation pin number.

And 7 serging sewing formation method according to the present invention is that pattern unit changes described needle falling point repeatedly in accordance with regulations in the present invention's 5 serging sewing formation method.

Like this, can form the lock seaming stitching of various pattern forms.

Description of drawings

Below, accompanying drawing and label thereof are carried out simple declaration.

Fig. 1 is the overall perspective view of the serging machine of the embodiment of the invention 1.

Fig. 2 is for being arranged on the line shuttle mechanism of needle plate below in Fig. 1 Sewing machines.

Fig. 3 is the stereogram of major part in presentation graphs 1 Sewing machines.

Fig. 4 is the stereogram of major part in presentation graphs 1 Sewing machines.

Fig. 5 is the block diagram of the controlling organization of eedle swing mechanism in presentation graphs 1 Sewing machines.

Fig. 6 is the vertical view of lock seaming stitching example in the expression embodiment of the invention, and (A) unit cell pattern is circular-arc, and (B) unit cell pattern is a triangle.

Fig. 7 is the stereogram of the serging machine major part of the expression embodiment of the invention 2.

Fig. 8 is the stereogram of the serging machine major part of the expression embodiment of the invention 2.

Fig. 9 is the key diagram of the serging machine action of example in the past.

Figure 10 is the key diagram of the serging machine action of example in the past.

Figure 11 is the key diagram of the serging machine action of example in the past.

Figure 12 is the vertical view of the stitching of lockstitching a border with the serging machine formation of example in the past.

Among the figure: A-unit cell pattern, X-cloth feeding direction, the direction that Y-is vertical with cloth feeding direction, the 6-needle plate, 8-eedle, 9-shank, 12-shut-off mechanism, the 14-shuttle thread of reaching the standard grade, the 16-shuttle of reaching the standard grade, the 18-shuttle thread that rolls off the production line, the 20-shuttle that rolls off the production line, the 30-sewing machine frame, 32-shank shaketable axle, 34-rocking frame fulcrum shaft, 36,80-shank shaketable, 38-shank rocking frame, 56,86-eedle swing motor, 59-eedle swing mechanism, the 60-gear, 62,83-eedle wobble gear, 64-eedle swing connecting bar, 68-CPU, 71-set mechanism, 72-eedle swing motor driver, the W-sewing, Wa-selvedge, 74-memory, the 76-upper thread, 77-eedle position detecting mechanism.

The specific embodiment

Below, the present invention will be described with reference to the accompanying drawings.

Serging machine shown in Fig. 1 has board 2 and head 4.On board 2, be screwed needle plate 6 and be provided with the cloth feeding mechanism (not shown) that sewing is moved along directions X.

The rear end of supporting eedle 8 and shank 9 and the supply that can move up and down that can move up and down are installed on head 4 and tie tight and pass the thread take-up tension lever 10 of eedle 8 upper threads and make cloth cutting knife 12a move the shut-off mechanism 12 that cuts out selvedge along the sewing cloth feeding direction up and down.The rotation interlock of above-mentioned shank 9, thread take-up tension lever 10, cloth cutting knife 12a and not shown machine spindle moves up and down.In addition, the Y direction among the figure is vertical with cloth feeding direction (directions X).

Be arranged on the line shuttle mechanism of the below of board 2, as shown in Figure 2, have the roll off the production line shuttle 20 and line shuttle thread take-up mechanism 22 of shuttle thread 14,18 of rolling off the production line on this of carrying and tie tight of reaching the standard grade shuttle 16 and making that the shuttle thread 18 that rolls off the production line passes that make that the shuttle thread of reaching the standard grade passes.

The shuttle 16 of reaching the standard grade is fixed on, and is supported on the upper end of shuttle support bar (not shown) of reaching the standard grade on the shuttle axle of doing to shake with the machine spindle interlock 24 of reaching the standard grade, shaking and shake with the shuttle axle 24 of reaching the standard grade.And the shuttle 20 that rolls off the production line is fixed on the shuttle axle of doing to shake with the machine spindle interlock 26 that rolls off the production line, shaking and shake with the shuttle axle 26 that rolls off the production line.

And these two line shuttle mechanisms have well-known structure.

Below, with reference to Fig. 3 and Fig. 4 the eedle swing mechanism that constitutes the eedle swing is described.The 2 shank shaketable axles 32,32 up and down that be arranged in parallel along the Y direction are fixed on the sewing machine stand 30.On this shank shaketable axle 32,32, be installed with and can along continuous straight runs slide, and upper and lower settings has the shank shaketable 36 of transverse arm 36A, 36B, and can move up and down in these shank shaketable 36 upper supports, fixing the shank 9 of the rear end of eedle 8.

On the shank driving shaft 44 that can be supported on rotationally on the sewing machine stand 30, fixing the 1st needle bar crank 46 that is connected with an end of needle bar crank connecting rod 52 and the 2nd needle bar crank 48 that is connected with an end of shank connecting rod 50 respectively.Fixedly the axial region 42a of the shank abut 42 of shank 9 can be with respect to the 50a of tube portion of shank connecting rod 50 rotationally and can be slidingly connected along axis direction (Y direction).

Needle bar crank connecting rod 52 is done to move up and down with the machine spindle interlock, and along with moving up and down of this needle bar crank connecting rod 52, shank driving shaft 44 shakes rotation.When the front end that shakes rotation the 2nd needle bar crank 48 by shank driving shaft 44 fluctuates, make shank abut 42 moving up and down by shank connecting rod 50.

Outstanding along the vertical direction pin 36a, the 36b of being provided with on transverse arm 36A, the 36B of shank shaketable 36.

And, on the sewing machine stand 30 at shank shaketable 36 rears, vertically fixing rocking frame fulcrum shaft 34, on rocking frame fulcrum shaft 34, the shank rocking frame 38 that can rotate is installed.

In embeded slot 38a, 38a that the upper and lower of shank rocking frame 38 forms, penetrate pin 36a, 36b, when shank rocking frame 38 be center when rotating with rocking frame fulcrum shaft 34, by pin 36a, 36b on shank shaketable 36 to Y direction reception and registration active force.According to this active force, shank shaketable 36 slides in shank shaketable axle 32,32 upper edge Y directions.

On shank rocking frame 38, also be formed with outstanding upward pin 38b.

In Fig. 4, the 59th, constitute the eedle wobble drive mechanism of actuating mechanism, by be fixed on installing plate 54 on the sewing machine stand, be installed in eedle swing motor (driving mechanism) 56 on the installing plate 54 and gear 60, eedle wobble gear 62, bindiny mechanism by eedle swing connecting bar 64 etc. constitute.Eedle swing motor 56 is pulse motor preferably, is fixing gear 60 on its driving shaft 56a.

Eedle wobble gear 62 can be with respect to supported rotationally from installing plate 54 outstanding upward pin 58, and with gear 60 interlocks.Eedle wobble gear 62 is connected with an end of eedle swing connecting bar 64 by the 62a of bar portion that rearward prolongs.The other end of eedle swing connecting bar 64 be connected with the chimeric described shank rocking frame 38 of pin 38b.

Amount for the rotation that detects eedle wobble gear 62 is provided with the sensor 66 that sandwiches eedle wobble gear 62 and be made of illuminating part and light accepting part.And, according to above-mentioned eedle swing mechanism 59, the eedle hunting range fixed on make roll off the production line shuttle and eedle can capture the scope of line respectively.

Fig. 5 is the block diagram of the controlling organization of expression eedle swing mechanism 59.In CPU68 by input/output interface 70 connecting sensor 66, drive eedle swing motor 56 driver 72, set mechanism 71, storing the memory 74 of most different serging sewing shape pattern-information etc., with the eedle position detecting mechanism 77 of machine spindle relevant configuration etc.

Constitute the eedle position detecting mechanism 77 of phase-detection mechanism, at least to detect the lower position of eedle, when sending position detection signal, rise to needle plate top during drop to the needle plate below from eedle, promptly detect the possible phase place of eedle and send the eedle phase detection signal.

Set mechanism 71 as described later, is the pattern data that stores in the selection memory 74, or the locking edge width data of the pattern data of change selection and the mechanism that sets new locking edge width, for example, by the guidance panel that is arranged on the sewing machine head 4, or formation such as dial type action button.

Fig. 6 is to use the vertical view of the lock seaming stitching example of the serging machine formation with above structure.Sewing W is cut off its selvedge Wa by the shut-off mechanism among Fig. 1 12, carries to directions X simultaneously, and the motion by eedle 8, the reach the standard grade shuttle 16 and the shuttle 20 that rolls off the production line forms stitching by the shuttle thread 14 of reaching the standard grade, roll off the production line shuttle thread 18 and upper thread 76.And, in Fig. 6, shown the stitching of the shuttle thread 18 that do not occur on the surface of sewing W rolling off the production line.

For example, in described memory 74, store the pattern that the lock seaming stitching by stated number forms, for example, the circular arc pattern that forms along the selvedge Wa of sewing W as shown in Fig. 6 (A), or the delta pattern that forms of the selvedge Wa along sewing W as Fig. 6 (B) as shown in etc. is as the pattern data storage of unit cell pattern A.Such pattern data has needle falling point N1 at least ... the eedle mobile location information of N6, or the locking edge width data that constitute according to its addendum modification information etc.At this moment, even in the locking edge width data, comprise the information of pin number, also can be in other local information that stores pin number.In addition, preferably will with the information storage of the corresponding wide range of forms of unit cell pattern in memory 74.

In addition, except lock seaming stitching according to the present invention and serging machine formation pattern as shown in Figure 6, also be applicable to common lock seaming stitching, promptly along the selvedge Wa of sewing W, upper thread 76 forms the linearity stitchings.At this moment, according to the locking edge width data that store in the memory 74, or, when moving, Sewing machines changes distance (locking edge width) from selvedge Wa to needle falling point according to arbitrary value by the set mechanism 71 manual locking edge width of setting.

Perhaps, also can increase and decrease the eedle shift position (lock seaming stitching width) of described unit cell pattern A, change like this or the revisal pattern data by the setting of set mechanism 71.

In above structure, before driving Sewing machines, select the pattern of lock seaming stitching in advance by set mechanism 71, or set locking edge width with arbitrary value.Sewing machines is in case start, with needle bar crank connecting rod 52 knee-actions of not shown main shaft interlock.

Along with these needle bar crank connecting rod 52 knee-actions, the 1st needle bar crank 46 and shank driving shaft 44 rotate, and make shank abut 42 and shank 9 knee-actions by the 2nd needle bar crank 48, shank connecting rod 50.

CPU68 sends control signal according to the eedle shifting momentum data of the pattern data of reading to driver 72 from memory 74.By set mechanism 71, when for example selecting pattern as shown in Figure 6, the regulation that CPU68 turns around at machine spindle constantly, for example at the eedle wobble data of from memory 74, reading next stitch corresponding to the eedle upper/lower positions detection signal of eedle position detecting mechanism 77, corresponding to the eedle swaying phase detection signal of eedle position detecting mechanism 77, to driver 72 output eedle shifting momentum datas (control signal).

Driver 72 drives eedle swing motor 56 according to the control signal of sending from CPU68 for each needle falling point to each pin makes 62 of eedle wobble gears rotate necessary angle.By swinging the rotation of the eedle wobble gear 62 of gear 60 interlocks on the motor 56 driving shaft 56a with being fixed on eedle, eedle swing connecting bar 64 is moved, cause shank rocking frame 38 to shake around rocking frame fulcrum shaft 34.

Along with shaking of shank rocking frame 38, by embeded slot 38a, 38a and pin 36a, 36b, shank shaketable 36 along continuous straight runs (Y direction) on shank shaketable axle 32,32 slides, and shank 9 and eedle 8 also slide on same direction for this reason.Its result is for the distance between the selvedge Wa that forms each needle falling point of selected pattern and sewing W is needed value.

In service at Sewing machines of the present invention, to each needle falling point of each pin, the distance between the selvedge Wa of its sewing W can be set to different values.

And even shank shaketable 36 slides on shank shaketable axle 32,32, the axial region 42a that penetrates the shank abut 42 among the 50a of tube portion of shank connecting rod 50 can not come off yet, and keeps common annexation.

When setting the locking edge width of fixed pattern (common lock seaming stitching) with set mechanism 71, driver 72 only once makes the necessary angle of 62 rotations of eedle wobble gear and drives eedle swing motor 56 according to the control signal of sending from CPU68.Its result, the distance between the selvedge Wa of needle falling point and sewing W is set value.

The present invention can set locking edge width any like this and simply.

Below, with reference to Fig. 7 and Fig. 8 embodiments of the invention 2 are described.

Compare the shank shaketable of embodiment 2 and the syndeton of eedle swing connecting bar, and the layout difference of eedle swing motor with embodiment 1.So, its different piece only is described, same structure is with same symbolic representation and omit its explanation.

Shank shaketable 80 can be slidably supported on shank shaketable axle 32,32 along eedle swaying direction (Y direction).In the side of shank shaketable 80, be formed with supported hole 80a facing to eedle 8.On this supported hole 80a, insert the segmentation pin 81 that is contained on the eedle swing connecting bar 64, and fixing with screw 82.

Can be supported on the eedle wobble gear 83 from the outstanding fulcrum 84 of the central portion of installing plate 87 rotationally, the 83a of bar portion of end one side disposed thereon is connected with eedle swing connecting bar 64.The gear part of eedle wobble gear 83 and gear 85 interlocks that are fixed on the driving shaft that is installed in eedle swing motor 86 on the installing plate 87 and that have horizontal axis.

In embodiment 2, because eedle swing connecting bar 64 directly is connected on the shank shaketable 80, so when forming the long lock seaming stitch of eedle swinging distance, when promptly forming locking edge width and changing big stitch, on shank shaketable axle 32,32, can not produce torque load, therefore can be correctly and form the lock seaming stitching apace.

So, though in each above-mentioned embodiment, shown the situation of swinging the control break locking edge width of motor by eedle, also can be provided with such driving and the controlling organization of pattern cam or setting locking edge width cam control eedle shift position.Change the structure of eedle position when at this moment, adopting eedle above cloth.

And, in embodiment 1 and embodiment 2,, also can be that the center is rotated and shaken with the top of shank shaketable though shown the situation that the eedle swing mechanism moves in the horizontal direction.At this moment, when the coordination of eedle and line shuttle at need, can adopt the well-known structure identical of shaking that makes line shuttle pedestal with shaking of eedle.

And, though shown the situation that changes the distance between described eedle position and the selvedge corresponding to the pattern unit of regulation pin number, also can the pin number of each regulation promptly be changed each pin or each plural stitch, form the lock seaming stitching simultaneously.

1 serging machine according to the present invention, since can with described eedle with the vertical direction of the operating cloth feeding direction of Sewing machines on change, pin number or pattern unit by each regulation change locking edge width, form stitching simultaneously, therefore no matter be automatically or manually, can both realize the lock seaming stitching of pattern form, and, in the sewing process, the operation that need not stop Sewing machines just can change locking edge width.

And 2 serging machine according to the present invention can change the lock seaming stitching and the locking edge width of pattern form automatically.

And 3 serging machine according to the present invention just can be realized the lock seaming stitching of pattern form with general line tatting structure.

And 4 serging machine according to the present invention can change locking edge width by each pin number in accordance with regulations.

And 5 serging machine according to the present invention can form the lock seaming stitching of various pattern form.

And, 6 serging sewing formation method according to the present invention is owing to can stipulate that pin number or pattern unit change the width of lock seaming stitching, therefore can realize the lock seaming stitching of pattern form by each, in the sewing process, the operation that need not stop Sewing machines just can change locking edge width simultaneously.

And 7 serging sewing method according to the present invention can stipulate that pin number changes locking edge width to each.

And 8 serging machine according to the present invention can form the lock seaming stitching of various pattern form.

Claims (7)

1. serging machine, by moving up and down eedle and the line shuttle that shakes along forming the lock seaming stitching on the end margin of the cloth of cloth feeding direction, it is characterized in that, eedle swing mechanism that connects can change the swing position of eedle in the prescribed limit on cloth feeding direction and described eedle during the top position of cloth, make the actuating mechanism of described eedle swing mechanism action, can form the lock seaming stitching simultaneously in Sewing machines change locking edge width in service;

Described actuating mechanism has: detect one of the machine spindle of described eedle when the top position of cloth rotate in the phase-detection mechanism of phase place; The driving mechanism that in described phase-detection mechanism detected phase, moves; Connect the bindiny mechanism between described eedle swing mechanism and driving mechanism; On regulation eedle swing position, set the controlling organization of the actuating quantity of described driving mechanism for making the eedle swing position.

2. according to the described serging machine of claim 1, it is characterized in that described eedle swing mechanism moves horizontally described eedle on described vertical direction.

3. according to the described serging machine of claim 1, it is characterized in that, described actuating mechanism make described eedle swing mechanism in accordance with regulations each pin number swing.

4. according to the described serging machine of claim 1, it is characterized in that described actuating mechanism makes described eedle swing mechanism pattern unit's perseveration in accordance with regulations.

5. the formation method of a serging sewing, it is characterized in that, when lockstitching a border stitching with the line shuttle that shakes along formation on the lateral edges of cloth feeding direction at cloth by moving up and down eedle, in the circle that machine spindle rotates, eedle be in cloth above during carry out locking edge width and change, form the lock seaming stitching simultaneously.

6. according to the formation method of the described serging sewing of claim 5, it is characterized in that,, change described locking edge width stipulating each pin number.

7. according to the formation method of the described serging sewing of claim 5, it is characterized in that pattern unit changes described lock seaming stitching repeatedly in accordance with regulations.

Images