CN1101491C - Thread tension control device of sewing machine - Google Patents
Thread tension control device of sewing machine Download PDFInfo
- Publication number
- CN1101491C CN1101491C CN 99108862 CN99108862A CN1101491C CN 1101491 C CN1101491 C CN 1101491C CN 99108862 CN99108862 CN 99108862 CN 99108862 A CN99108862 A CN 99108862A CN 1101491 C CN1101491 C CN 1101491C
- Authority
- CN
- China
- Prior art keywords
- standard grade
- cut
- reaching
- tension
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 113
- 230000008859 change Effects 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 abstract description 33
- 238000004904 shortening Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 60
- 239000004744 fabric Substances 0.000 description 50
- 238000012546 transfer Methods 0.000 description 27
- 238000012937 correction Methods 0.000 description 17
- 230000009471 action Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 11
- 230000007423 decrease Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 244000000626 Daucus carota Species 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- 235000005770 birds nest Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 235000005765 wild carrot Nutrition 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011020 pilot scale process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
A thread tension control device for a sewing machine capable of shortening the length of a thread end after the thread is cut off. It is provided with: a thread adjusting device for applying tension to the upper thread of the sewing machine; a driving device which acts on the thread adjusting device through electric drive and enables the thread adjusting device to continuously change the tension applied to the upper thread; and a top thread cutting member for cutting the top thread between the sewed object and the needle near the position of the needle above the needle plate. After sewing, the drive device is controlled to apply tension to the thread adjusting device at least before the upper thread cutting member cuts the upper thread.
Description
The present invention relates to control the line tension control device of the Sewing machines of the tension force of reaching the standard grade in order to shorten the line end that sews cloth.
In existing sewing machine for binding buttonhole, because the last line tension of respectively making part (being parallel to the both sides parallel portion of buttonhole and the reinforcing seam part at buttonhole two ends) setting according to buttonhole is different, so partly be provided with the yarn changing device that two (parallel portion is with using with reinforcing seam part) set different line tensions for corresponding to respectively making, simultaneously, in each yarn changing device, be provided with tension force relieving mechanism (plate-like is floated mechanism) in order only to make corresponding yarn changing device effectively make another yarn changing device inoperative when respectively making part making.
This tension force relieving mechanism is provided with the cam that the tension force that for example is connected with this mechanism discharges usefulness, makes this cam and sets the main cam interlock of making figure, discharges the tension force of a yarn changing device at the appointed time.The rotation of this main cam and machine spindle interlock is so the pin number of necessity of using for the buttonhole that forms regulation, the regulation number of revolutions of promptly setting machine spindle are set it and once rotated.
In addition, in existing sewing machine for binding buttonhole, the shut-off mechanism of reaching the standard grade of reaching the standard grade as cut-out, the known cut-out of reaching the standard grade is cut, so-called reaching the standard grade cut, and this operation of cutting pedal that attended operation person carries out etc. of reaching the standard grade is risen the cloth presser feet, before the cloth presser feet rises, slide in pin hole next door above the cloth presser feet, clamp and cut off the line between cloth and the pin, then, under original state of the cut-out end of reaching the standard grade that keeps linking to each other with pin hole, by sliding, retreat into holding fix.
On the other hand, for example above-mentioned sewing machine for binding buttonhole is such, after the cut-out of will reaching the standard grade above the cloth, below cloth, cut off and roll off the production line, in such Sewing machines, in order to shorten the length of the last line end that links to each other with cloth as much as possible, when cut-out is rolled off the production line, the cut line end of going up is drawn in the cloth.
Promptly, shown in Figure 16 (a), the line falling bar 202 of going ahead of the rest before the movable blade 201 of L2 is rolled off the production line in cut-out makes when rolling off the production line the L2 line falling, strain the L2 that rolls off the production line, the L1 that will reach the standard grade draws among the cloth CL, shown in Figure 16 (b), do not make the cut-out end of the L1 that reaches the standard grade stay on the cloth or expose, with the cloth surface (on) side processes comparatively attractive in appearancely.
; in existing above-mentioned sewing machine for binding buttonhole, control above-mentioned cam and the tension force relieving mechanism is worked owing to utilize, so carry out after sewing finishes that presser feet is mentioned, when tangent line is handled with the main cam of main shaft interlock; machine spindle stops, and yarn changing device is discharged.
When yarn changing device does not discharge and since tension force be added in reach the standard grade on, so or reach the standard grade that line can not pass through when changing, or beginning to reach the standard grade when sewing and pin descend can not get supplying with, and becomes the reason that the cut-out of reaching the standard grade holds a side to come off from pin hole etc.
Therefore, before main cam stops, above-mentioned cam is worked, make the tension force relieving mechanism in running order.
, can absent-mindedness by reaching the standard grade under the tension force effect that does not have yarn changing device of constituting of fiber, thus be drawn out and be in relaxed state from line supply source one side too much, therefore elongated with the path of reaching the standard grade that pin links to each other with cloth.
Shown in Figure 15 (b), owing to before cutting off line, be released the absent-mindedness of reaching the standard grade of tension force, so if carry out tangent line under this state, the line end of the cut L1 that reaches the standard grade is elongated.On the other hand, shown in Figure 15 (a), when under tension, cutting off,, also shorten so cut off the length of end because the path of line is short.
The object of the present invention is to provide a kind of line tension control device of Sewing machines, having in the Sewing machines that above sewn object, cuts off the cut-out member of reaching the standard grade of reaching the standard grade, this line tension control device can shorten the length of the last line end after cutting off by keeping line tension before reaching the standard grade in cut-out.
In order to solve above-mentioned problem
A first aspect of the present invention is a kind of like this line tension control device of Sewing machines, and it has:
Tension force is added in yarn changing device on the reaching the standard grade of Sewing machines;
Act on above-mentioned yarn changing device, make this yarn changing device can change the drive unit of the tension force that applies reaching the standard grade continuously by electric driving; And
Near the position of the pin that falls above the needle plate, cut off the cut-out member of reaching the standard grade of the usefulness of reaching the standard grade between sewn object and the pin,
After the sewing finishing, before the cut-out member of reaching the standard grade will be reached the standard grade cut-out, control above-mentioned drive unit at least, apply the tension force of yarn changing device.
If employing a first aspect of the present invention, then because the cut-out member of reaching the standard grade cuts off before the processing to reaching the standard grade, can suitably apply tension force, can not relax, can shorten and cut off the residue length that the back cut-out of reaching the standard grade of exposing from sewn object is held so when cut-out is reached the standard grade, reach the standard grade to reaching the standard grade.
In addition, cut off in the Sewing machines roll off the production line in the cut-out back of reaching the standard grade, because the cut-out end of reaching the standard grade is short, thus cut off when rolling off the production line when carrying out line falling rolling off the production line, can be easily and will reach the standard grade to draw in reliably and plant.
In addition, owing to carry out electrical control, even cut off in the Sewing machines of member work so make to reach the standard grade, under the situation beyond the Sewing machines work, also can in time strain and reach the standard grade in operation by pedal etc., or the control that does not act on, when reaching the standard grade replacing, can line be passed through, can prevent to pull to reach the standard grade, simultaneously as mentioned above, can shorten reaches the standard grade cuts off end, and can easily it be drawn in and plant.
And, by the present invention is implemented in the Sewing machines that such circulating sewing machine so-called tackling " Bird's Nest " phenomenon in addition that is subjected to cam control of sewing machine for binding buttonhole is used, owing to can shorten the residue length of reaching the standard grade, so can be used to prevent " Bird's Nest " phenomenon.
Here, yarn changing device has the type that for example wire clamp is imposed tension force between two adjustment disks to line, also have with line be configured in shuttle around, utilize the rotational resistance of shuttle line to be imposed the type etc. of the rotation tension type of tension force.Drive unit can be for example combination of voice coil motor, proportional solenoid, the words of calming the anger plug and proportion magnetic valve etc., so long as can change the drive unit of drive amount continuously by electrical control, which type of drive unit can so, (for example change the pressure of shuttle continuously by will this continuous drive amount acting on the yarn changing device, or change the rotational resistance of shuttle continuously), can change the resistance that line is applied by yarn changing device continuously.
A second aspect of the present invention is in the line tension control device of the described Sewing machines of first aspect, has when carrying out above-mentioned cut-out of reaching the standard grade and handling, and can import the setting input device of the set-point data of the resistance that is applied reaching the standard grade by above-mentioned yarn changing device.
If adopt the second aspect of this invention, when then handling owing to the cut-out of reaching the standard grade, can set or change is added in tension force on reaching the standard grade by yarn changing device, so can be according to the sewing condition of the kind of the kind of reaching the standard grade and thickness and sewn object and thickness etc., set or cut-out that change is suitable for these sewing conditions line tension when reaching the standard grade.
Fig. 1 is the outward appearance oblique view of the sewing machine for binding buttonhole that has line tension control device of the expression embodiment of the invention.
Fig. 2 is the yarn changing device of the needle-thread tensioning control device that has in this sewing machine for binding buttonhole of expression and the profile of drive unit.
Fig. 3 is that making of this sewing machine for binding buttonhole of expression reached the standard grade and cut off the structure chart cut mobile primary structure.
Fig. 4 is that reaching the standard grade in the key diagram 3 cut off the figure of the work usefulness of cutting, (a) be that expression is reached the standard grade and cut off the vertical view of the state before cut-out is reached the standard grade of cutting, (b) being that expression is reached the standard grade and cut off the vertical view cut the state after cutting off of reaching the standard grade, (c) is that expression is reached the standard grade and cut off the vertical view of cutting the state of reaching the standard grade after keeping cutting off.
Fig. 5 is the figure of the guidance panel that has in the sewing machine for binding buttonhole in the presentation graphs 1.
Fig. 6 is the block diagram of the circuit structure of this sewing machine for binding buttonhole of expression.
Fig. 7 is that expression can be from the figure of the tables of data of the data of guidance panel input.
Fig. 8 is the schematic diagram of making figure of the buttonhole made with sewing machine for binding buttonhole of expression.
Fig. 9 is the flow chart of the processing sequence of the generalized flowsheet handled of buttonhole that expression is undertaken by the control section of sewing machine for binding buttonhole.
Figure 10 is the flow chart that the guidance panel in the expression generalized flowsheet shown in Figure 9 is set the processing sequence of the subprogram of handling.
Figure 11 is the flow chart that expression guidance panel shown in Figure 10 is set the processing sequence of the subprogram that the parameter transformation in handling handles.
Figure 12 is the flow chart of the processing sequence of the subprogram that makes processing of the stitch data in the expression generalized flowsheet shown in Figure 9.
Figure 13 is the flow chart that expression stitch data shown in Figure 12 makes the processing sequence of the subprogram that the graphic operation in the processing handles.
Figure 14 is the curve map of the summary of the correction computing carried out with tension force correction computing during expression graphic operation shown in Figure 13 is handled.
The figure that cuts off the state of reaching the standard grade the processing is cut off in reaching the standard grade that Figure 15 sees from the front, and (a) expression is reached the standard grade and is subjected to tension force to make the situation of time spent, and (b) expression is reached the standard grade and is not subjected to tension force to make the situation of time spent.
Figure 16 is represent to reach the standard grade when the cut-out of carrying out is so far the rolled off the production line figure of situation about being drawn into.
Below, with reference to Fig. 1～Figure 14, embodiments of the invention are described.
In Fig. 1, this sewing machine for binding buttonhole 1 has: eedle 9, cloth moves forward and backward work feed simultaneously along the cloth throughput direction cloth presser feet 15 and push pedal 14 in clamping, cut 80 in the cut-out of reaching the standard grade that the upside cut-out of cloth presser feet 15 is reached the standard grade, and the rag knife 16 etc. that cloth cut is formed buttonhole, eedle 9 carries out elevating movement, simultaneously along with the direction reciprocating motion (oscillating motion of pin) of cloth feeding direction almost parallel, make, for example, as shown in Figure 8, carry out left parallel portion A around the buttonhole section H, first reinforces seam part B, right parallel portion C, second reinforces making of seam part D, forms buttonhole on sewn object.
And, be provided with on this sewing machine for binding buttonhole 1: the control device (Fig. 6) that in control sewing machine for binding buttonhole 1, constitutes line tension control device; Yarn changing device 19 as the needle-thread tensioning control device of controlling by this control device; Voice coil motor 60 as drive unit; And as guidance panel 110 (Fig. 5) of setting input device etc.
Fig. 2 is the profile of above-mentioned yarn changing device 19 of expression and voice coil motor 60.
Yarn changing device 19 is a kind of like this yarn changing devices, be it with wire clamp between a pair of adjustment disk (being called fixed disk 67 and movable plate 66), resistance (being tension force) is added on this reaches the standard grade, utilize the action of working shaft 63 simultaneously, (dynamically) changes above-mentioned resistance continuously in the process of making, and the yarn changing device that especially such (dynamically) is continuously changed resistance is called activity (active) tensioner.This yarn changing device 19 by the base component 64 on the arm 4 that is fixed on Sewing machines, quill shaft 65, be fixed on fixed disk 67 on the quill shaft 65, the movable plate 66 that can be provided with movably along quill shaft 65 and movable plate 66 be pressed in helical spring 68 on the fixed disk 67 etc. and constitute, in addition, in quill shaft 65, inserted and be the contact chip 66a of one with movable plate 66 and move and the working shaft 63 that can contact with contact chip 66a along quill shaft 65.
The plunger 61 of voice coil motor 60 is that the lever 62 of fulcrum is connected on the working shaft 63 of yarn changing device 19 by the pin 62a with mid portion, by changing the driving force of above-mentioned voice coil motor 60 continuously, can change the pressure of the movable plate 66 of yarn changing device 19 continuously, be added in resistance on reaching the standard grade thereby can change continuously by yarn changing device 19.
Fig. 3 is that expression is cut off reaching the standard grade of sewing machine for binding buttonhole 1 to cut the 80 primary structure figure that move, and Fig. 4 is that the expression explanation is reached the standard grade to cut off and cut the figure that 80 working condition is used.Fig. 4 (a) is that expression is reached the standard grade and cut off the vertical view of the state cut-out is reached the standard grade before of cutting, and (b) is that expression is reached the standard grade and cut off the vertical view of shearing the state after disconnected the reaching the standard grade, (c) is that expression is reached the standard grade to cut off and cut the vertical view that keeps the state of reaching the standard grade after the cut-out,
As shown in Figure 4, reach the standard grade to cut off and cut 80 and keep spring 90 etc. to constitute by fixed blade 86, movable sword 87 and line.
Above-mentioned cut across cam 92 and close cut cam 91 and install regularly with respect to cloth presser feet 15, along with moving forward and backward of cloth presser feet 15, change with the cut-out of reaching the standard grade and cut 80 relative position.
In detail, cut 80 and draw back (moving up among Fig. 4) from holding fix by making to reach the standard grade to cut off, cam contact portion 87c contacts with cutting across cam 92, oppresses movable sword 87 and opens.Then, under this state, reach the standard grade to cut off and cut 80 advance (in Fig. 4, moving down), after this, slide into the upside of needle downing position to the right, reaching the standard grade enters between movable sword 87 and the fixed blade 86, in addition, cam contact portion 87c cuts cam 91 and contacts with closing, and oppresses movable sword 87 closures, cuts off from reaching the standard grade that eedle 9 stretches out.
It is that reaching the standard grade after cutting off clamped and remained on and the movable leaf spring between the sword 87 that line keeps spring 90, reach the standard grade by keeping this, carrying out the making in the processing of a plurality of buttonholes, after the sewing finishing of a buttonhole, can under this state, directly move to next buttonhole place.
Reach the standard grade to cut off and cut 80 for example after a buttonhole finishes, before promoting cloth presser feet 15, move along fore-and-aft direction or left and right directions and to carry out above-mentioned thread cutting action.
As shown in Figure 3, make to reach the standard grade to cut off and cut 80 primary structures that move by cutting bar 81, connecting axle 83, cutting arm 85 etc. and constitute.Connecting axle 83 can move along the axis direction straight line and be to be supported on the bearing 95 under the state that rotates of center with the axis, reaches the standard grade to cut off and cuts 80 straight lines along with this connecting axle 83 and move or rotate and move forward and backward or slide along left and right directions.Cut bar 81 and be fixed on the connecting axle 83, utilize this to cut bar 81, cause that the straight line of connecting axle 83 moves or rotates.
The figure of the guidance panel 110 that has in the sewing machine for binding buttonhole 1 has been shown among Fig. 5.
On guidance panel 110, be provided with: make make begin usefulness make key 131; Push make key 131 after, light by indicator lamp, show LED (light emitting diode) display part 132 be in the mode of making; Select the options button 133 of input mode; Light by indicator lamp, show the figure number display part 134 and the parameter display part 135 of the input mode of selecting by the operation of this options button 133; The mode display part 141 that constitutes by 27 sections display parts; The parameter display part 142 that constitutes by 47 sections display parts; Make the negative key 143 of input parameter value for " 1 "; Make the positive key 144 of input parameter value for "+1 "; Unit deducts the depreciation key 145 of input parameter setting value usefulness in accordance with regulations; Unit adds the appreciation key 146 of input parameter setting value usefulness in accordance with regulations; And the set key 147 etc. that predicts the location of line by eedle 9 and pot shape thing.
The block diagram of the circuit structure of sewing machine for binding buttonhole 1 has been shown among Fig. 6.
As shown in the drawing, the control device of sewing machine for binding buttonhole 1 is by constituting with the lower part: CPU (CPU) 100; RAM (random access memory) 102; ROM (read-only storage) 101; The Y feed counter 103 that the rotation amount of each pulse motor is counted; Baseline feed counter 104; Pin swing feed counter 105; The rag knife counter 106 that the driving number of rag knife is counted; Carry out the Y feed pulse motor driver 111 of the driving of each pulse motor; Baseline feed pulse motor driver 112; Pin swing feed pulse motor driver 113; The I/O interface 109 that connects the driver of various sensors or each drive division and guidance panel 110 etc. and CPU100; The sewing motor 5 that drives Sewing machines is carried out the sewing motor controller 115 of drive controlling; The sewing motor encoder 119 that the rotation amount of sewing motor 5 is encoded as the anglec of rotation of last axle 6; Drive the active tension driver 120 of the voice coil motor (voice coil motor) 60 of yarn changing device 19; Driving makes the presser feet rising solenoid drive circuit 121 of the presser feet rising solenoid 122 of cloth presser feet 15 risings; Driving makes the rag knife decline cylinder drive circuit 123 of the rag knife decline cylinder 30 of rag knife 16 declines; And interrupt condition according to the rules (represent the rotation amount of each pulse motor count value, work feed position, go up the anglec of rotation of axle 6 etc.), interrupt signal is exported to the interrupt control unit 108 of CPU100 etc.
It is motor that cloth presser feet 15 and cloth holding plate 14 are moved along the Y direction that Y sends pulse motor 20 to, baseline is sent the motor of baseline position that pulse motor 40 is pin swings of change Sewing needles 9 to, and the motor that pulse motor 41 is pin oscillating quantities of change Sewing needles 9 is sent in the pin swing to.
Except connecting sewing motor 5, also connecting the pin top position sensor 116 that detects Sewing needles 9 and be positioned at the situation of top position, detecting TG (tachogenerator) generator 118 etc. of sending reference position sensor 117 to and detecting the anglec of rotation that goes up axle 6 of the reference position of cloth presser feet 15 or cloth holding plate 14 on the above-mentioned sewing motor controller 115.
Except the driver and drive circuit that are connecting guidance panel 110 and each drive part, also connecting the cutter decline sense switch 34 of the decline that detects rag knife 16 on the I/O interface 109, detect the presser feet decline sense switch 28 of the decline of cloth presser feet 15, the Y that the work feed member that detection is made of cloth presser feet 15 and cloth holding plate 14 is in the state of origin position sends origin sensor 26 to, the baseline position of expression pin swing mechanism is positioned at the baseline of the situation of initial point and sends origin sensor 57 to, the amplitude of oscillation of expression pin swing mechanism is positioned at the pin swing of the situation of initial point and sends origin sensor 58 to, the presser feet switch 124 of the decline of indication cloth presser feet 15, and the starting switch 125 that begins of the driving of indication sewing motor 5 etc.
CPU100 is according to the regulation zone of RAM102 is stored in control program among the ROM101 as the working region, input is carried out the control of each drive part from the data of guidance panel 110 and from the detection signal of the various sensors that connected by each driver.
The control data of various processing and control program below in ROM101, having stored: the stitch data according to by guidance panel 110 inputs, carry out the processing of making of buttonhole; From guidance panel 110 input handling as feature of the present invention at the relevant thread tension value of moment that cut-out is reached the standard grade and yarn changing device 19 or the setting input of making each setting data such as parameter of figure; Handle the test driving of the pilot scale property tested ground driving needle-thread tensioning control device handles in this setting input; And the line tension control of the line of the control of carrying out yarn changing device 19 when cut off handling of reaching the standard grade when cutting off is handled etc.
The sewing machine for binding buttonhole that has line tension control device equal controller and needle-thread tensioning control device 1 of this embodiment as above constitutes like that, as described below, from the various setting datas of guidance panel 110 inputs, the drive controlling that comprises the sewing machine for binding buttonhole 1 of needle-thread tensioning control device carries out beginning after cut-out is reached the standard grade the buttonhole till cloth presser feet 15 rises to be handled from making.
At first, illustrate from the project of the setting data of guidance panel 110 inputs.
Expression has been shown among Fig. 7 can be from the tables of data of the data of guidance panel input.
Can be from the data content of guidance panel 110 inputs, shown in the parameter list among this figure.
That is, the length data of making the figure each several part of buttonhole is promptly cut the cloth length data, the wide data of cutter, the bar length data, reinforce the seam width data, the parallel portion spacing data, reinforce seam part spacing data, rag knife-first is reinforced the gap length data between the seam, rag knife-second is reinforced the gap length data between the seam, expression roll setting position is along the roll setting left and right sides position data of the side-play amount of left and right directions, expression is attached to tension force the active tension correction data of the correction value of the voice coil motor 60 on the yarn changing device 19, parallel portion tension data as the tension data of respectively making yarn changing device 19 constantly, reinforce seam partial tension data, make the beginning tension data, the sewing finishing tension data, tension data during tangent line, the rag knife sized data, the presser feet sized data, and the cutter of the Sewing machines speed of expression when driving rag knife 16 Sewing machines speed data etc. when driving.Operating operation panel 110 is imported these data, and is deposited among the RAM102.
In the above-mentioned data items, " tension force during tangent line " of item number " 15 " is the data items of feature of the present invention, cut with reaching the standard grade 80 carry out reach the standard grade when cut off handling, the line tension corresponding with this data value is added on the yarn changing device 19.
If the user drives sewing machine for binding buttonhole 1, then at first carry out handling from the setting input of above-mentioned each setting data of guidance panel 110 inputs.The setting data of having stored the setting data of default in advance (acquiescence) and last time imported in each data items of input, the user only imports and changes the data items that needs change.
In projects of setting data, having stored expression in advance can be corresponding to the setting range data of the scope of the data value of this project input, under the data conditions of having imported beyond this setting range data, carries out false judgment.
Above-mentioned setting data number is registered as many groups corresponding to making figure, and the user makes figure number arbitrarily by selecting to access, and can read in the setting data group corresponding to this number, is used for the actual control of making.
In addition, in above-mentioned setting input was handled, the test driving that drives needle-thread tensioning control device in the input of predetermined data project was handled with handling the pilot scale property tested.Promptly as the setting data project of importing, if select " parallel portion tension force ", " reinforcing the seam partial tension ", " making beginning tension force ", " sewing finishing tension force ", " tension force during tangent line " as tension data, then when selecting, make in the voice coil motor 60 by the electricity of the amount corresponding, on the plunger 61 of this voice coil motor 60, cause the driving force corresponding with setting data with setting data.Then, this driving force is delivered on the movable plate 66 of yarn changing device 19 by lever 62, working shaft 63, applies the pressure corresponding with setting data.
Then, when guidance panel 110 was operated the change setting data, corresponding to the change of this setting data, also change was added in the pressure on the yarn changing device 19.Under this state, the user hangs over line on the yarn changing device 19, with the tension force of tensometer slotted line, and the actual line tension that obtains during energy measurement goes out to make thus.In addition, by measurement on one side, on one side the change setting data, can easily find the setting data that obtains desirable line tension.
In addition, by above-mentioned measurement, under setting data and actual measured value situation devious, the data setting of " active tension correction " in the change setting data items.The data value of this project is the data of correction based on the energising amount usefulness of the voice coil motor 60 of tension data, revises like this, for example deducts the energising amount corresponding to active tension correction data from the energising amount based on tension data.By correctly carrying out this correction, slotted line tension force practically only according to the setting data value, just can not produce desirable tension force.
In addition, there are being between many identical sewing machine for binding buttonhole 1, each Sewing machines tension data and actual tension that deviation is arranged and wanting to revise under the situation of this deviation, at first import same data value as suitable tension data, measure on one side tension force then, on one side the data of change " active tension correction ".Then, when the line tension of output regulation, finish the data setting of " active tension correction ".All carry out same adjustment in the Sewing machiness, can eliminate the deviation of tension data and actual tension between each Sewing machines.
If above-mentioned setting input processing finishes, then, place cloth, connect starting switch 125, just make according to the figure of setting of making.In the process of making, make processing each constantly, and make processing and synchronously will be added on the yarn changing device 19 with the corresponding tension force of each constantly corresponding tension data value.Thus, form desirable buttonhole, carry out desirable buttonhole operation.
In detail, as Fig. 8 1.～9. shown in, there is shown the figure of making of the buttonhole made with sewing machine for binding buttonhole 1, at first, the tension force corresponding with the setting data of " making beginning tension force " is added on the yarn changing device 19, work feed simultaneously, making needle downing position is coordinate P
1(Fig. 8 1.).Secondly, the tension force corresponding with the setting data of " parallel portion tension force " is added on the yarn changing device 19, pass through Sewing needles 9 and the coordination of cloth feed simultaneously, carry out make (Fig. 8 2.) of left parallel portion A, be sewn into making of next reinforcing seam part always and begin coordinate P
2(Fig. 8 3.).Secondly, the tension force corresponding with the setting data of " reinforcing the seam partial tension " is added on the yarn changing device 19, by the coordination of Sewing needles 9 and cloth feed, carry out first make (Fig. 8 4.) of reinforcing seam part B simultaneously, be sewn into making of next right parallel portion always and begin coordinate P
5(Fig. 8 5.).
Secondly, the tension force corresponding with the setting data of " parallel portion tension force " is added on the yarn changing device 19, pass through the coordination of Sewing needles 9 and cloth feed simultaneously, carry out make (Fig. 8 6.) of right parallel portion C, be sewn into next second the making of reinforcing seam part always and begin coordinate P
7(Fig. 8 7.).Secondly, the tension force corresponding with the setting data of " reinforcing the seam partial tension " is added on the yarn changing device 19,, carries out first make (Fig. 8 8.) of reinforcing seam part D simultaneously by the coordination of Sewing needles 9 and cloth feed.Secondly, the tension force corresponding with the setting data of " sewing finishing tension force " is added on the yarn changing device 19, simultaneously by the coordination of Sewing needles 9 and cloth feed, pin coordinate P carries out falling until at last
1Make (Fig. 8 9.).At last, the tension force corresponding with the setting data of " tension force during tangent line " is added on the yarn changing device 19, cuts off by reaching the standard grade simultaneously and cut 80, locked a buttonhole the line cut-out.
In addition, can not begin the rising processing that above-mentioned line cuts off processing and cloth presser feet 15 yet, but, begin above-mentioned processing for example by push-botton operation or control automatically according to pedal operation.
Below, describing the buttonhole processing sequence in detail, the above-mentioned setting input of carrying out comprising the control section by sewing machine for binding buttonhole 1 is handled and the reach the standard grade Tension Control processing of line when cutting off.
Fig. 9 is the flow chart of the processing sequence of the generalized flowsheet handled of buttonhole that expression is undertaken by the control section of sewing machine for binding buttonhole.
The startup that this buttonhole is for example handled with sewing machine for binding buttonhole 1 begins simultaneously.
Sewing machine for binding buttonhole 1 is transferred to step S2 afterwards in case startup at first, in step S1, is carried out guidance panel and set the subprogram processing of handling.
In step S2, making key 131 and whether being in on-state of decision operation panel 110 if be in on-state, just transfer to step S3, if be in off-state, just return step S1, carried out operating and setting repeatedly and handled.
Make key 131 if push, transfer to step S3, then in this step S3, make the subprogram that the stitch data of the computing etc. of figure makes and handle, transfer to step S4 afterwards.
In step S4, for example read in the error flag among the RAM102, whether judgement has write down mistake in previous step, if there is not error logging, directly transfer to step S6, if step S5 then transferred in wrong record, on the display part 140 of guidance panel 110, carry out corresponding mistake and show, interrupt buttonhole and handle.
In step S6, the signal that cloth presser feet 15 is descended is exported to presser feet rising solenoid drive circuit 121, transfer to step S7 afterwards.
In step S7, sending pulse motor 20, baseline to according to Y sends pulse motor 40, pin swing to and sends the fine motion of pulse motor 41 and Y to and send origin sensor 26, baseline to and send the detection output that origin sensor 57, pin swing are sent origin sensor 58 to, carry out each former point retrieval of cloth feeding mechanism and pin swing mechanism, transfer to step S8 afterwards.
In step S8, drive Y and send that pulse motor 20, baseline are sent pulse motor 40 to, pulse motor 41 is sent in the pin swing to, so that Sewing needles 9 is positioned at the top of first needle downing position of sewing beginning, transfers to step S9 afterwards to.
In step S9, the signal that cloth presser feet 15 is risen is exported to presser feet rising solenoid drive circuit 121, transfer to step S10 afterwards.
In step S10, judge whether to have carried out making the making operation of key 131, if on-state is directly transferred to step S11, if off-state is returned step S1.
In step S11, judge whether presser feet switch 124 is in on-state, if on-state is directly transferred to step S12,, carry out the processing of step S10, S11 repeatedly if off-state is returned step S10.
If push presser feet switch 124, transfer to step S12, then in this step, read in the detection output of presser feet decline sense switch 28,, transfer to step S13 if cloth presser feet 15 rises, the output that cloth presser feet 15 is descended, transfer to step S15, if but step S14 is then transferred in 15 declines of cloth presser feet, the processing that begins from step S10 is returned in the output that cloth presser feet 15 is risen again.
In step S15, judged whether to carry out the making operation of presser feet switch 124, if on-state is directly transferred to step S16,, cloth presser feet 15 is risen if off-state is transferred to step S14, return the processing that begins from step S10.
In step S16, judged whether to carry out to indicate the making operation of the starting switch 125 of making beginning, still be not in off-state, carried out the processing that begins from step S15 repeatedly if carry out making operation, under the situation of having carried out making operation, transfer to step S17.
In step S17, make the stitch data that makes in the processing according to stitch data at step S3, drive sewing motor 5, carry out from locking the moving and respectively making the processing of making that constantly tension force of setting is added on the yarn changing device 19 that begin of a buttonhole to making of finishing, rag knife 16, then, transfer to step S18.
In step S18, for example read in the error flag among the RAM102, whether judgement has write down mistake in previous step, if there is not error logging, directly transfer to step S19, if step S20 then transferred in wrong record, on the display part 140 of guidance panel 110, carry out corresponding mistake and show, interrupt buttonhole and handle.
In step S19, the signal corresponding with the setting data of " tension force when line cuts off " exported to active tension driver 120, and the setting data of above-mentioned " tension force when line cuts off " is to set in the processing at the guidance panel of step S1 to be stored among the RAM102 after the input.
In step S21, making the cut-out of reaching the standard grade cut 80 actions, cut off sewing machine thread, then, step S22 is transferred in the cut-out line pressure pin rising processing that cloth presser feet 15 is risen afterwards.
In step S22, read in the detection output of presser feet decline sense switch 28, after affirmation cloth presser feet 15 rises, transfer to step S23, signal is exported to active tension driver 120, discharge the tension force of yarn changing device 19, then, return step S10, carry out the processing that begins from step S10 more repeatedly.
In other words,, cut 80 cut-outs of carrying out and reach the standard grade when handling cutting off, to carry out tension force when predefined line the cut off Tension Control of reaching the standard grade when being added in line on reaching the standard grade and cutting off and handle by reaching the standard grade by the processing of above-mentioned steps S19, S21, S23.
Figure 10 is that being illustrated in as the setting input processing of carrying out among the step S1 of generalized flowsheet is the flow chart that guidance panel is set the processing sequence of the subprogram of handling.
After accessing this subprogram, at first, in step S31, judge the on/off of options button 133,, then in step S32, make the selection number of storing among the RAM102 (value of expression setting means), transfer to step S33 for "+" if logical.But if options button 133 is in off-state, just transfer to step S35.
In step S33, judge whether the value of the selection number of storing among the RAM102 has surpassed maximum, if surpass, then in step S34, " 0 " substitution is selected to transfer to step S35 behind the number, if do not surpass, then directly transfer to step S35.
Secondly, in step S35, S37, carry out and the corresponding branch process of selection number, if selecting number is 0, then change the pattern modifying of the number of making figure and handle (step S36), be 1 if select number, then carry out parameter modification and handle the subprogram processing of (step S38),, this guidance panel set the end of subroutine handled, turn back to general program thereafter.
Figure 11 is illustrated in the flow chart that guidance panel shown in Figure 10 is set the processing sequence of the subprogram that the parameter modification that carries out among the step S38 that handles handles.
After accessing the subprogram of parameter modification processing, at first, in step S41, judged whether to push the positive sign key 144 of guidance panel 110, if push, then in step S42, make stored parameters among the RAM102 number (value of the setting item (Fig. 7) of expression input data), transfer to step S43 for after "+1 ".If but do not push, transfer to step S45.
In step S43, judge whether the value of stored parameters among the RAM102 number has surpassed maximum, if surpass, transfer to step S45 after then in step S44, selecting " 1 " substitution in the number, if do not surpass, then directly transfer to step S45.In other words, in the processing of above-mentioned steps S41～S44, can select to make the setting item of input to move to "+1 " direction.
Secondly, in step S45～step S48, carry out the processing same, transfer to step S49 with above-mentioned steps S41～S44 along " 1 " direction.
In step S49,, use upwarding key 146, down Arrow 145 to change processing with the parameter value of the setting item of the parameter appointment among the RAM102 by carrying out and step S41～same processing of step S49.
Then, transfer to step S50, in this step, judge parameter number among the RAM102 whether be the tension force of yarn changing device 19 set number, if, then transfer to step S51, the tension force of setting data is exported to yarn changing device 19, finish this subprogram and handle.But if not the setting item of tension data number, directly this subprogram processing is finished, return guidance panel among Figure 10 and set and handle.
In other words, by the processing of above-mentioned steps S50, S51, the test that tentatively drives needle-thread tensioning control device drives to be handled.
In step S1, the S2 of generalized flowsheet (Fig. 9), carry out above-mentioned guidance panel at high speed repeatedly and set the subprogram of processing and parameter modification processing, till having pushed when making key 131, during this repeated treatments, the input of whole setting datas can be carried out, in the assignment procedure of tension data, driving can be tested simultaneously.
As mentioned above, if adopt the control device (line tension control device) of the sewing machine for binding buttonhole 1 of this embodiment, then because in the processing of step S19～step S23 of generalized flowsheet (Fig. 9), cut off by reaching the standard grade and to cut 80 and reach the standard grade when cutting off, applied suitable last line tension, can not relax so cutting off reaches the standard grade when reaching the standard grade, can shorten and cut off the residual length of reaching the standard grade that expose from sewn object the back.
In addition, because the tension force that is added on reaching the standard grade from yarn changing device 19 can be by electrical control changes continuously, so when online cut-out is handled, can apply the different line tension that is suitable for line cut-out processing of line tension when making, therefore, the place of making is very attractive in appearance.
In addition, because the variation of the tension force of yarn changing device is undertaken by electrical control, even so reach the standard grade and cut off in the Sewing machines of cutting 80 action, also can make action beyond the action and drive voice coil motor 60 linkedly and apply line tension with this according to making for example pedal operation etc. beyond the action.
In addition, owing to set processing by the guidance panel that in the step S1 of generalized flowsheet (Fig. 9), carries out, the setting of the last line tension that applies from yarn changing device of can change reaching the standard grade when cut off handling, so can be according to sewing conditions such as the kind of the kind of reaching the standard grade and thickness and sewn object and thickness, setting value is changed to tension force when being suitable for reaching the standard grade of these sewing conditions and cutting off.
Figure 12 is illustrated in the flow chart of processing sequence that the stitch data that carries out among the step S3 of generalized flowsheet shown in Figure 7 makes the subprogram of processing.
In this subprogram, at first, compare set the setting range of storing among the middle setting data imported of processing (the step S1 among Fig. 7) and the ROM101 (with reference to Fig. 5) at guidance panel, check whether setting data is included in the setting range.Then, under situation about not comprising, establish the error flag among the RAM102, transfer to step S102.
In step S102, whether judgement has established error flag in step S101, if established, just finish this subprogram, return generalized flowsheet, if but establish, the subprogram of carrying out graphic operation successively handles (step S103), after the driving of having calculated rag knife cutter constantly drives constantly calculation process (step S104), finishes this subprogram.
Figure 13 is that the above-mentioned stitch data of expression makes the flow chart of processing sequence that graphic operation in the processing is handled the subprogram of (step S103).
After the subprogram that accesses this graphic operation processing, at first, the guidance panel that reads in generalized flowsheet (Figure 13) is set the data value of handling " the active tension correction " of input in (step S1), carries out the correction computing of tension force according to this data value.
This revises the content of computing, shown in the curve map of the summary of expression correction computing among Figure 14, is to derive the computing of revising data value according to the setting data value.Promptly, relation between the effective tension of actual generation on setting data value and the yarn changing device 19 departs from ideal line and is under the situation of the first straight line L1, as correction value, the relation of setting data value and effective tension can be modified to ideal line by input " C1 ".Equally, the relation between setting data value and effective tension departs from ideal line and is under the situation of the second straight line L2, as correction value, the relation of setting data value and effective tension can be modified to ideal line by input " C2 ".
Then, read in guidance panel and set the data of respectively making figure that deposit in after the input in the processing among the RAM102, carry out successively as from make begin to sewing finishing make graphic operation make that seam partial arithmetic (step S114) is reinforced in starting position computing (step S112), left parallel portion computing (step S113), first, seam partial arithmetic (step S116), sewing finishing position computing (step S117) are reinforced in right parallel portion computing (step S115), second, with this end of subroutine, turn back to stitch data and make processing (Figure 12).
As mentioned above, owing to drive processing (parameter modification is handled step S50, the S51 of (Fig. 9)) by test, when the Sewing machines beyond when making stops, tentatively drive voice coil motor 60, can make the state of yarn changing device 19 become the state corresponding, so for example under this state, by line is hung on the yarn changing device with the tension data value, with the tension force of tensometer slotted line, can be easily and confirm exactly to make in line tension on the yarn changing device 19 that applies.
In addition, be what in the setting input process of the tension data that has carried out yarn changing device, to carry out because above-mentioned test drives processing, so Yi Bian,, can easily set desirable line tension for Yi Bian change setting data by measuring the line tension of yarn changing device.
In addition, by suitably setting the data of " active tension correction ", can make in fact consistent with the tension force that determines by setting data by guidance panel 110 inputs from the line tension (adding resistance on line) of yarn changing device 19 acquisitions.
In addition, when using many Sewing machiness, the needle-thread tensioning control device of each Sewing machines exists discrete, even import same setting data, sometimes the line tension that obtains from the yarn changing device 19 of each Sewing machines is also different, by setting " active tension correction " data, can eliminate the discreteness of the needle-thread tensioning control device between each Sewing machines corresponding to each needle-thread tensioning control device.
In addition, needle-thread tensioning control device of the present invention is not limited to the foregoing description, for example yarn changing device can not be the adjustment disk form, also can be rotary tension force or other forms of, drive unit is not limited to voice coil motor, also can be combination of proportional solenoid, cylinder and proportion magnetic valve etc., also can drive amount be changed continuously by electrical control.In addition, also can set not test in the processing procedure to drive and handle, drive starting switch but test for example is set, by the making operation of this switch at guidance panel, test to drive and handle, can also carry out in the predefined moment of Sewing machines stopped process.In addition, in the present embodiment, show needle-thread tensioning control device of the present invention is applied to example in the sewing machine for binding buttonhole, but also can be applied to circulating sewing machine or other Sewing machiness such as button sewing machine or sewing machine for embroidery.
If employing a first aspect of the present invention is then reached the standard grade when cut-out is reached the standard grade and can not relaxed, can shorten and cut off the residual length that the back cut-out of reaching the standard grade of exposing from sewn object is held.
In addition, cut off the back and cut off in the Sewing machines that rolls off the production line reaching the standard grade, because the cut-out end of reaching the standard grade is short, thus roll off the production line and when leaving behind line in cut-out, can be reliably and easily will reach the standard grade to move to and plant.
In addition, owing to carry out electrical control, even so by the reach the standard grade Sewing machines of the action of cutting off member of the operation of pedal etc., also can when work, Sewing machines in time apply or not be applied with the control of line tension in addition, reaching the standard grade can make line pass through when changing reliably, and can prevent reaches the standard grade pulls out, simultaneously as mentioned above, can make reaches the standard grade cuts off the end weak point, can easily be pulled to plant.
And, by being provided with and same tangent line member, yarn changing device, the drive unit of the present invention, in tackling the Sewing machines that so-called " Bird's Nest " phenomenon uses, implement the present invention, cut off the length of end because can shorten to reach the standard grade, so can be used to prevent " Bird's Nest " phenomenon.
If employing a second aspect of the present invention, then owing to can set and change the last line tension of reaching the standard grade and applying from yarn changing device when cutting off processing, so can be according to sewing conditions such as the kind of the kind of reaching the standard grade and thickness and sewn object and thickness, setting value is changed to tension force when being suitable for reaching the standard grade of these sewing conditions and cutting off.
Claims (2)
1. the line tension control device of a Sewing machines, it has:
Tension force is added in yarn changing device on the reaching the standard grade of Sewing machines;
By the above-mentioned yarn changing device of electric driving effect, make this yarn changing device can change the drive unit of the tension force that applies reaching the standard grade continuously; And
Near the position of the pin that falls above the needle plate, be breaking at the cut-out member of reaching the standard grade of the usefulness of reaching the standard grade between sewn object and the pin,
The line tension control device of this Sewing machines is characterised in that: after the sewing finishing, before the cut-out member of reaching the standard grade will be reached the standard grade cut-out, control above-mentioned drive unit at least, apply the tension force of yarn changing device.
2. the line tension control device of Sewing machines according to claim 1 is characterized in that: have can be when carrying out above-mentioned cut-out of reaching the standard grade and handle the setting input device of set-point data of the resistance that applies reaching the standard grade by above-mentioned yarn changing device of input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108862 CN1101491C (en) | 1999-06-28 | 1999-06-28 | Thread tension control device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108862 CN1101491C (en) | 1999-06-28 | 1999-06-28 | Thread tension control device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1290777A CN1290777A (en) | 2001-04-11 |
| CN1101491C true CN1101491C (en) | 2003-02-12 |
Family
ID=5273557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99108862 Expired - Lifetime CN1101491C (en) | 1999-06-28 | 1999-06-28 | Thread tension control device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1101491C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637189B (en) * | 2003-12-29 | 2010-12-08 | 大和缝纫机制造株式会社 | Thread end processing device for german seam sewing machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4047624B2 (en) * | 2002-05-14 | 2008-02-13 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4492162B2 (en) * | 2004-03-18 | 2010-06-30 | ブラザー工業株式会社 | Sewing thread tension device |
| DE102017201240A1 (en) * | 2017-01-26 | 2018-07-26 | Dürkopp Adler AG | Method for producing a seam beginning upper thread of a seam to be formed in sewing material with a defined nominal seam projection and sewing machine for carrying out such a method |
| JP2019166038A (en) * | 2018-03-23 | 2019-10-03 | ブラザー工業株式会社 | sewing machine |
-
1999
- 1999-06-28 CN CN 99108862 patent/CN1101491C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637189B (en) * | 2003-12-29 | 2010-12-08 | 大和缝纫机制造株式会社 | Thread end processing device for german seam sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1290777A (en) | 2001-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2017184980A (en) | sewing machine | |
| JP6108742B2 (en) | Buttonhole sewing machine | |
| CN1038955C (en) | Sewing system having function to store operation-state data upon detection of abnormality | |
| JP2016152823A (en) | Sewing machine | |
| KR20140106432A (en) | Double needle sewing machine | |
| JP4526956B2 (en) | sewing machine | |
| CN1786313A (en) | Differential cloth feeding sewing machine | |
| CN1101491C (en) | Thread tension control device of sewing machine | |
| KR20140106431A (en) | Sewing machine | |
| CN112703283B (en) | Sewing machine capable of sewing thread material and thread cutting device | |
| CN101063257A (en) | Sewing device and filler strip sewing machine | |
| CN1116464C (en) | Yarn change unit for sewing machine | |
| CN107881658B (en) | Sewing machine and control method of sewing machine | |
| CN1133770C (en) | Button holing sewing machine | |
| WO2020054556A1 (en) | Sewing machine with which it is possible to sew cord material, device for supplying cord material, and cord guide body | |
| JP2007195957A (en) | Sewing machine | |
| CN1249284C (en) | Buttonhole serging machine and method for forming stitch thereof | |
| JP2009207734A (en) | Marking illumination device of sewing machine | |
| CN1421562A (en) | Device for severing lower thread on button holes-sewing sewing machine and button holes sewing machine | |
| JP6520399B2 (en) | Sewing machine and control method of the sewing machine | |
| TWI775849B (en) | Method for producing a seam end bottom thread with a target seam protrusion, and sewing machine | |
| JP2013154062A (en) | Sewing machine | |
| JP7181117B2 (en) | sewing machine | |
| CN112689693A (en) | Sewing machine capable of sewing thread material and method for controlling sewing of thread material | |
| JP7092458B2 (en) | How to manufacture stitched skin material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20030212 |
|
| CX01 | Expiry of patent term |