CN101372797A - Sewing machine and method for sewing a beginning of a seam with such a sewing machine - Google Patents
Sewing machine and method for sewing a beginning of a seam with such a sewing machine Download PDFInfo
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- CN101372797A CN101372797A CNA2008102133267A CN200810213326A CN101372797A CN 101372797 A CN101372797 A CN 101372797A CN A2008102133267 A CNA2008102133267 A CN A2008102133267A CN 200810213326 A CN200810213326 A CN 200810213326A CN 101372797 A CN101372797 A CN 101372797A
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- needlework
- anchoring
- thread
- stringing device
- line
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
- D05B1/02—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making single-thread seams
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B19/00—Programme-controlled sewing machines
- D05B19/02—Sewing machines having electronic memory or microprocessor control unit
- D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B19/00—Programme-controlled sewing machines
- D05B19/02—Sewing machines having electronic memory or microprocessor control unit
- D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
- D05B19/14—Control of needle movement, e.g. varying amplitude or period of needle movement
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
This invention refers to a sewing machine with thread (9) supplier. A needle rod (7) with sewing needle (8) is used for guiding the thread to pass through the textile fabric. A thread hook (10) is used for hooking the thread in the forming period of thread track. A first thread clamp (14) is arranged in a supply side route of the thread between the thread hook and a thread rod (18). A main stringing device (21) is arranged in the supply side route line of the thread at the upper reach of the first thread clamp. A second thread clamp (28) capable of actuating is arranged in the supply side route passage of the thread (9) at the upper reach of the main stringing device (21). A thread drawing device (24) is arranged between the thread rod and the second thread clamp. The thread drawing device can controllably move between the neutral position and the thread drawing position, wherein at the thread drawing position, the passage of the thread is the thread passage difference which is longer than the passage of the neutral position, therefore, a short section of thread (9) projecting from the textile fabric at the sewing starting position is realize in the mode of reliable operation.
Description
Technical field
The present invention relates to a kind of Sewing machines, this Sewing machines comprises: the needlework supply; Comprise the shank of the sewing needle that is used to guide the needle thread passing fabric, wherein, sewing needle can be driven between bottom dead centre and top dead-centre and vertically move up and down; Be used for the stumble line hook of needlework of during stitching forms hook; Be used to make needlework to form the line bar of ring; The first actuatable needlework folder between online hook and the line bar in the supply side travel path of needlework; And, the main stringing device in the needlework supply side travel path of first needlework folder upstream, wherein, main stringing device applies the line tension of scheduled volume to needlework in the actuating state of main stringing device.The invention still further relates to a kind of method of using this stitching sewing machine linear slit beginning.
Background technology
The Sewing machines of this general type is known from DE 102 34 251 A.That wherein describes is used for the measure of the free line end pull back of needlework very general.
Summary of the invention
Therefore, the objective of the invention is to realize that to operate reliable mode a bit of needlework are outstanding from fabric in linear slit beginning place that wherein this will spend under the less situation in configuration aspects and realize.
According to the present invention, realize described purpose by a kind of Sewing machines, this Sewing machines is characterised in that, comprise: activatable second needlework folder that is arranged in the supply side stroke route of needlework at main stringing device upstream, be provided with between the online bar and second needlework folder and be in anchoring in the stroke route of needlework, this anchoring can controllably move between neutral position and backguy position, in this neutral position, first thread path between needlework bar along the line and the main stringing device is advanced, in this backguy position, second thread path between needlework bar along the line and the main stringing device is advanced, and described second thread path is that to be longer than the thread path of first thread path poor.
The present invention is based on the following fact: the excessive line that the anchoring between online bar and second needlework folder causes when online bar is moved downward is left line bar zone towards the pulling of needlework supply, wherein, when sewn seams at the first bruss, the logical mast of needlework is pulled in the fabric, and its degree makes only a bit of needlework-and be the free end-be left in linear slit beginning place outstanding from fabric of line.For this reason, needlework are pulled certain distance, and it is poor that this distance equals the thread path that caused by anchoring.Obtain a visually agreeable linear slit beginning thus, and need not further to shorten the outstanding free end of needlework by cutting off described free end.This is favourable in the application for the visual quality special concern of linear slit especially, for example when making leather when being used for interior vehicle components.Anchoring can be designed to and activatable second needlework folder separated components.For example, anchoring can be designed to online bar and main stringing device between the needlework that move cooperate drag the line device.
Anchoring is arranged in the needlework travel paths between main stringing device and second needlework folder and is proved to be advantageous particularly.
The thread path difference that makes the thread path difference that is caused by the motion between neutral position and backguy position equal about 20mm-cause by layout-this layout of anchoring causes visually agreeable linear slit.According to the application of Sewing machines, it is contemplated that also other thread path is poor.
Can the effort with a spot of configuration aspects be combined with anchoring in the needlework pilot unit, this anchoring comprises a pivotable support, is provided with the line hole in this bracket end.
The different backguy position of can be as required setting by the automatic motion of anchoring-wherein adapts to separately rim condition for the pulling of the amount difference of variant backguy position line path difference-can make needlework begin to locate at linear slit.These the backguy positions that can set as required can automatically be changed especially, thereby make it possible to according to one of a plurality of possible thread path differences of the needs automatic setting on the Sewing machines.This can realize in a controlled manner, for example, and the sewing program of selecting according to the operator separately.The change of this position is undertaken by the controlled driving of anchoring then.
The electromagnetic driver that is used to change anchoring guarantees simultaneously that to operate reliable and the realization of cost effective and efficient manner the position changes fast.Perhaps, also can imagine air impeller or stepper motor to be used to make the anchoring motion.
The layout of anchoring-this layout make this anchoring be installed on the clamping plate of second needlework folders-make anchoring and second needlework folder can be combined in the unit, can be mounted together.
With top described corresponding about installing, described method comprises the steps: according to the advantage of the method for stitching sewing machine linear slit of the present invention beginning in use
-form wire loop by the shank of lifting swage with seam, described shank upwards is lifted to one-tenth between bottom dead centre and the top dead-centre journey position of going in ring from bottom dead centre, wherein, when described lifting takes place, the first and second needlework double-layered quilts are opened to discharge needlework, main stringing device activated, and anchoring is in the neutral position;
-after the one-tenth that arrives shank goes in ring the journey position, controllably activate the clamp position of first and second needlework folder, and make main stringing device ineffective, so that needlework are not tensioned;
-activate wire clamp and make main stringing device ineffective after, make anchoring from shift-in backguy position, neutral position, when being lowered with convenient line bar, the needlework between line bar and first needlework folder shorten;
-controllably activate the unwrapping wire position of first and second needlework folder subsequently, and activate main stringing device and make anchoring return the neutral position.
When forming first ring, the actuating of anchoring only takes place in each linear slit beginning, and this has been avoided anchoring to make unnecessary actuating in the process after initial stitching.When forming first stitching, in other words, in the linear slit beginning, anchoring activated.Preferably, the whole sequence of this first stitching is carried out with the rotating speed of determining of arm axle, and the rated speed of described rotating ratio arm axle is slow.
Activate wire clamp at the same time and make main stringing device ineffective after, be used to change anchoring the position the time lag-determine by Sewing machines wherein said time lag and have nothing to do-be proved to be with the rotating speed of arm axle and be suitable for guaranteeing that operating reliable needlework in linear slit beginning place spurs sequence.Be lower than specific minimum of a value in order to ensure operating pulling reliably, should not dropping on time lag.
The absolute time hysteresis of shift-in backguy position is proved to be the operation reliably that is particularly suitable for guaranteeing anchoring when being defined as anchoring and activating wire clamp at the same time and make the about 50ms in the ineffective back of main stringing device.
Description of drawings
Illustrate in greater detail embodiments of the invention by means of accompanying drawing below, in the accompanying drawings:
Fig. 1 illustrates the front perspective view of Sewing machines;
Fig. 2 illustrates according to the needlework guidance unit of the Sewing machines of Fig. 1 thin portion when " 205 ° of belt journeys " arm axle position with the ratio of amplifying;
Fig. 3 the needlework guidance unit is shown with the similar view of Fig. 2, wherein compare and removed some parts with Fig. 2;
Fig. 4 illustrates according to the needlework guidance unit of the Sewing machines of Fig. 1 thin portion when " 225 ° of anchorings activated " arm axle position with the ratio of amplifying;
Fig. 5 the needlework guidance unit is shown with the similar view of Fig. 4, wherein compare and removed some parts with Fig. 4;
Fig. 6 illustrates according to the needlework guidance unit of the Sewing machines of Fig. 1 thin portion when " 305 ° of anchorings return fully " arm axle position with the ratio of amplifying;
Fig. 7 the needlework guidance unit is shown with the similar view of Fig. 6, wherein compare and removed some parts with Fig. 6;
Fig. 8 illustrates according to the needlework guidance unit of the Sewing machines of Fig. 1 thin portion when " 0 ° of shank top dead-centre " arm axle position with the ratio of amplifying;
Fig. 9 illustrates according to the needlework guidance unit of the Sewing machines of Fig. 1 thin portion when " 65 ° of line bar top dead-centres " arm axle position with the ratio of amplifying;
Figure 10 the needlework guidance unit is shown with the similar view of Fig. 9, wherein compare and removed some parts with Fig. 9;
Figure 11 illustrates along the schematic diagram of the linear slit plane that is limited by needlework and bobbin thread by the vertical section of two-layer fabric, and wherein initial linear slit part as seen.
The specific embodiment
Sewing machines 1 has the infrabasal plate 3 of a upper arm 2 and a shelly, and they link to each other to form C-form stand by column 4.Arm axle 5 (see figure 2)s are installed in arm 2, and described arm axle 5 can drive to rotate with being contained in the belt driver in the column 4 by means of motor.Be connected with central control unit 6 on the described motor, this central control unit schematically illustrated one-tenth in Fig. 1 is arranged in upper arm 2, but also this central control unit can be arranged in other position, or even in Sewing machines 1 outside, and for example be connected to Sewing machines by cable.Shank 7 is driven by arm axle 5 and moves up and down, and this shank lower end is fixed with pin 8.Needlework 9 (see figure 2)s are passed the eyelet of pin 8.
Arrange wired hook 10 in substrate 3, wherein, line hook 10 can drive to rotate around vertical rotation 11 (see figure 2)s, and this rotatablely moves and comes from arm axle 5 in a usual manner.Be positioned with bobbin thread supply 13 (seeing Figure 11) in the line shuttle box of online hook 10 or the Wiinding cartridge 12.
Fig. 2 is shown specifically needlework 9 and how is conducted through Sewing machines 1.Along the needlework supply side stroke relative with the needlework direction of feed, promptly along updrift side, look from the eyelet of pin 8, be provided with first needlework folder 14, this first needlework folder comprises the clamping plate 15 that can be shifted with respect to its base portion body 16.First needlework folder 14 is connected to control module 6 allowing signal exchange, thus this first needlework folder 14 therein needlework 9 be clamped in first needlework folder 14 the position the first clamp position and wherein first needlework folder 14 discharge between the unwrapping wire position of needlework 9 and be shifted.Near first needlework folder 14, needlework 9 are substantially vertically advanced.
Can limit the passage that needlework 9 pass first needlework folder 14 by means of a plurality of threading openings in the base portion body 16 17.In illustrated embodiment, needlework 9 pass second threading opening 17 in right side, and this threading opening 17 is perpendicular to one of four threading openings of total of line direction of feed layout.
The wired bar 18 of provided upstream of first needlework folder 14, moving up and down of this line bar also realizes by arm axle 5 in a known way.Between the line bar hole 19 of the free end that online bar 18 is set and first needlework folder 14, needlework 9 also pass the bullport 20 that is arranged on according to the upper end of the base portion body 16 of Fig. 2.
Between main stringing device 21 and line bar 18, needlework 9 pass another bullport 23, and this bullport can be shifted in the mode that can set perpendicular to the needlework direction of feed.
Provided upstream at two main turnbuckles 22 is equipped with anchoring 24.Anchoring 24 has pivotable support 25, and this support is hinged to the clamping plate 27 of second needlework folder 28 by hinge connector 26.Therefore anchoring 24 is installed to the clamping plate 27 of second needlework folder 28.At its free end, the support 25 of anchoring 24 has the line hole 29 that can be shifted perpendicular to the travel path of needlework 9 between upstream master's turnbuckle 22 and second needlework folder 28.Support 25 can move between neutral position shown in Figure 2 and backguy position shown in Figure 4, wherein, the thread path of needlework 9 between main stringing device 21 and second needlework folder 28 is poorer than the thread path of the circuit path length of the correspondence of needlework 9 in the neutral position of support 25.In described embodiment, this thread path difference for example equals 20 millimeters.
Between the line hole 29 of neutral position and upstream master's turnbuckle 22 and this line hole 29 and second needlework folder 28, on an installing plate 30, be equipped with a lead pin 31 along the travel path of needlework, this installing plate 30 is installed on the arm 2.In the backguy position of support 25, needlework 9 pass through these two lead pins 31, and pass through the line hole 29 of support 25 between described lead pin diagonally.These two lead pins 31 have guaranteed no matter support 25 is in the backguy position and still have been positioned at the neutral position that needlework 9 all can pass from second needlework folder 28 in same point before entering upstream master's turnbuckle 22.
Provided upstream at second needlework folder 28 is equipped with pretension line apparatus 32, and this pretension line apparatus is operation in a known way also, and can be connected to control module 6 to allow the exchange signal.Along lead pin 31, comprise two main turnbuckles 22 main stringing device 21, comprise that second needlework folder 28 and the pretension line apparatus 32 of anchoring mounted thereto 24 also are attached to installing plate 30.
In the upstream of pretension line apparatus 32, needlework 9 pass a threading opening 33, and this threading opening is formed on the (see figure 2) in the about 90 ° upper edge region of front curve of installing plate 30.Be equipped with line shuttle as the needlework feeding mechanism-be not shown specifically in the provided upstream of threading opening 33.
Fig. 2 to 10 illustrates the instantaneous position of rotation of arm axle 5.Sentence therewith on the handwheel 34 of rotation and be provided with angle scale 35 being fixed in arm axle 5 ends, angle scale 35 is divided into 360 calibration, so that the complete rotation of indication arm axle.Each position, angle of angle scale 35 illustrates in the following description.
Fig. 2 and 3 illustrates 205 ° of arm axle 5 positions.In this position, shank 7 has moved once more and has left it slightly and be positioned at 180 ° of bottom dead centres of locating, thereby forms wire loop 36 near the eyelet of pin 8.205 ° of positions, the bill 37 of line hook 10 can engage wire loop 36 to pull needlework 9.
In Fig. 3, fabric plane N E is shown with a line.This line lies in the position on the needle plate 39 of Sewing machines 1 corresponding to fabric 38.
205 ° of positions, first needlework folder 14 is in the clamp position.Main stringing device 21 is inoperative, so needlework 9 not tensionings.Anchoring 24 is in the neutral position.Second needlework folder 28 is in the clamp position.Pretension line apparatus 32 works, so tensioning between needlework 9 online shuttles and the pretension line apparatus 32.Line bar 18 moves towards its bottom dead centre.Line bar 18 from it the dead point leave, thereby the line between two needlework folder 14,28 is excessive, that is to say, is not subjected to tension force at this some place line, shown in Fig. 2 and 3.This excessive line is the twice of line bar hole 19 distance of advancing to 205 ° of positions shown in Fig. 2 and 3 from the top dead-centre of line bar 18 no better than.
Figure 4 and 5 illustrate 225 ° of arm axle positions.With compare with 3 position according to Fig. 2, arm axle 5 turns over 20 ° along making direction.
225 ° of positions, first needlework folder 14 is in the clamp position.Main stringing device 21 is still inoperative.The support 25 of anchoring 24 has moved into the backguy position now.Second needlework folder 28 is in the clamp position.
225 ° of positions, line bar hole 19 has moved down farther, and is positioned at the upstream of its bottom dead centre now.By making anchoring 24 shift-in backguy positions, the excessive needlework near needlework hole 19 in Fig. 2 and 3 are retracted by the line hole 29 towards anchoring 24 now.Almost be stretched between needlework 9 present online bar holes 19 and first needlework folder 14.
225 ° of positions, line hook 10 also turns over corresponding angle around rotation 11, promptly turns over 40 ° around rotation 11.Needlework 9 are pulled down by bill 37 now.
Fig. 6 and 7 illustrates 305 ° of arm axle positions.305 ° of positions, line bar hole 19 is positioned near the bottom dead centre.
Shifting to the process of 305 ° of arm axle positions from 225 ° of arm axle positions, line hook 10 passes fabric 38 with free end 40 pulling downwards of needlework 9.When arm axle 5 continued rotation, line bar 18 retracted needlework in the fabric.At last, free end 40 is given prominence to the more a small amount of of corresponding line length from fabric.
Fig. 8 illustrates 0 ° of arm axle position.In this arm axle position, shank 7 has arrived its top dead-centre.This position is used in the beginning of the process of making-just be used in the beginning of linear slit, because at this place, the maximum free space that provides pin 8 belows is to be used to insert fabric 38.
0 ° of position, first needlework folder 14 is in the unwrapping wire position.Main stringing device 21 works.Anchoring 24 is in the neutral position.It is 28 inoperative that second needlework press from both sides.Pretension line apparatus 23 works.Line bar 18 moves up from bottom dead centre from it.
Fig. 9 and 10 illustrates 65 ° of arm axle positions.Pin 8 moves down.Two needlework folders 14 and 28 are in the unwrapping wire position.Main stringing device 21 works.Pretension line apparatus 32 works.Anchoring 24 is in the neutral position.
The above-mentioned angle position sequence according to Fig. 1 to 10 of arm axle 5 is chosen to be used to illustrate the operator scheme of anchoring 24.
When the practical operation of anchoring 24 was in 0 ° of position according to Fig. 8 at arm axle 5, wherein, needlework 9 were staggered but have free end 40.In this position, insert two-layer fabric.Storaging state information in control module 6 " linear slit begins ".From position according to Fig. 8, as shown in figure 11, sewn seams in fabric 38.Have only and at this moment-promptly have only when forming first stitching, anchoring 24 is operated as described above.When the stitching that forms subsequently, anchoring 24 always remains on the neutral position.When anchoring 24 activated when moving into the backguy position of 225 ° of arm axle positions, the free end 40 logical masts 18 of needlework 9 and passed fabric 38 to the meeting pulling, thus shorten.
When anchoring 24 had moved into the backguy position and returned for the first time from the neutral position, the status information " linear slit begins " that is stored in the control module 6 became " linear slit continuously ".When carrying out the line cutting-off process, the status information in the control module 6 becomes " linear slit begins " again.In the monitoring state information in the process of making subsequently.Anchoring 24 only just moves when status information is " linear slit begins ".
Can limit by the position, angle of the support the backguy position 25 from the length of the outstanding free end 40 of fabric 38.Particularly when support 25 is driven by stepper motor, but the line end length that chosen in advance is different in control module 6.Support 25 is limited according to selected line end length by control module 6 in the position, angle of backguy position.Perhaps, the backguy length that forms corresponding line end length also can be set by the mechanical stop that is used for support 25.
Activate needlework folder 14,28 at the same time and make main stringing device 21 inoperative after during 50ms, anchoring 24 is from shift-in backguy position, neutral position.According to described embodiment, when arriving 305 ° of positions, finished following return movement: promptly, make needlework folder 14,28 move into the unwrapping wire position, activate main stringing device 21 and make anchoring 24 move into the neutral position; But, accessible continuously for guaranteeing the sewing process, in any case they all will be finished when reaching 305 ° of positions substantially.
By the qualification of control module 6, what depend on needlework folder 14,28 and main stringing device 21 lag time substantially guarantees that operating reliable position changes the required time.
Move into the backguy position from the neutral position and return at the anchoring of the whole sequence of linear slit beginning place first stitching-during this period-carry out with the rotating speed of determining of arm axle 5, this rotating speed is less than the rated speed of arm axle 5.This rotating speed that reduces of arm axle 5 is also limited by control module 6.When forming first stitching with the arm axle rotating speed of determining, be used for when needlework folder 14,28 activates, changing anchoring 24 the position lag time and be used to make main stringing device to add up to for example steady state value of 50ms 21 inoperative lag times.Be used for activating at the same time and change the position of anchoring 24 after the wire clamp 14,28 and main stringing device can be determined for 21 motionless lag times and the rotating speed that changes with the alternative of the arm axle 5 of Sewing machines 1 is irrelevant.
Claims (11)
1. Sewing machines comprises:
-needlework (9) supply;
-shank (7), it comprises and is used to guide needlework (9) to pass the sewing needle (8) of fabric (38) that wherein, sewing needle (8) can be actuated between bottom dead centre and top dead-centre along vertically moving up and down;
-be used for the stumble line hook (10) of needlework (9) of during stitching forms hook;
-be used for the line bar (18) that the ring of needlework (9) forms;
Be in activatable first needlework folders (14) in the supply side stroke route of needlework (9) between-online hook (10) and the line bar (18);
-in the supply side stroke route of needlework (9), be in the main stringing device (21) of the upstream of first needlework folders (14), wherein this main stringing device (21) applies the line tension of the amount of determining to needlework (9) in the actuating state of main stringing device (21);
It is characterized in that, also comprise
-in the supply side stroke route of needlework (9), be in activatable second needlework folders (28) of the upstream of main stringing device (21);
-anchoring (24) is arranged in the stroke route of needlework (9) between its online bar (18) and second needlework folders (28), and this anchoring (24) can controllably move between neutral position and backguy position, wherein,
--in the neutral position, first thread path between needlework (9) bar (18) along the line and the main stringing device (21) is advanced,
--in the backguy position, second thread path between needlework (9) bar (18) along the line and the main stringing device (21) is advanced, and described second thread path is poorer than the thread path of the first circuit path length.
2. Sewing machines according to claim 1 is characterized in that, described anchoring is arranged in the formation route of needlework (9) between main stringing device (21) and second needlework folders (28).
3. Sewing machines according to claim 1 is characterized in that, described anchoring (24) is arranged so that the thread path difference total that is caused by the motion between neutral position and backguy position is about 20mm.
4. Sewing machines according to claim 1 is characterized in that, described anchoring (24) comprises pivotable support (25), and wired hole (29) is set in the end of this support, and wherein this end can pivot perpendicular to the stroke route of line.
5. Sewing machines according to claim 1, it is characterized in that described anchoring (24) is controllable so that move automatically, wherein in one of the different backguys position that can set as required, for in the different backguys position each, the amount difference of thread path difference.
6. Sewing machines according to claim 1 is characterized in that, is provided with the electromagnetic driver that is used to change anchoring (24).
7. Sewing machines according to claim 1 is characterized in that, described anchoring (24) is installed on the clamping plate (27) of second needlework folders (28).
8. use the method according to the beginning of Sewing machines of the present invention (1) sewn seams, this method comprises the steps:
-the shank (7) that has sewing needle (8) by lifting forms wire loop (36), described shank (7) upwards is lifted to one-tenth between bottom dead centre and the top dead-centre journey position of going in ring from bottom dead centre, wherein, when described lifting takes place, first and second needlework folder (14,28) be opened to discharge needlework, main stringing device (21) activated, and anchoring (24) is in the neutral position;
-after the one-tenth that arrives shank (7) goes in ring the journey position, controllably activate the clamp position of first and second needlework folders (14,28), and make main stringing device (21) ineffective, so that needlework (9) are not tensioned;
-after activating wire clamp (14,28) and making main stringing device (21) ineffective, make anchoring (24) move into the backguy position from the neutral position, when being lowered, the needlework (9) between online bar (18) and first needlework folders (14) shorten with convenient line bar (18);
-controllably activate the unwrapping wire position of first and second needlework folders (14,28) subsequently, activate main stringing device (21), and make anchoring (24) return the neutral position.
9. method according to claim 8 is characterized in that, when forming first ring, described anchoring (24) only activated in the beginning of each linear slit.
10. method according to claim 8, it is characterized in that, activate wire clamp (14,28) at the same time and make main stringing device (21) ineffective after, determine by Sewing machines (1) time lag that is used to change the position of anchoring (24), and irrelevant with the rotating speed of arm axle (5).
11. method according to claim 10 is characterized in that, activates wire clamp (14,28) at the same time and makes main stringing device (21) after ineffective during about 50ms, makes anchoring (24) immigration backguy position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007039596.7 | 2007-08-22 | ||
| DE102007039596A DE102007039596A1 (en) | 2007-08-22 | 2007-08-22 | Sewing machine and method for sewing a seam beginning with such a sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101372797A true CN101372797A (en) | 2009-02-25 |
| CN101372797B CN101372797B (en) | 2013-01-02 |
Family
ID=40122460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102133267A Expired - Fee Related CN101372797B (en) | 2007-08-22 | 2008-08-22 | Sewing machine and method for sewing a beginning of a seam with such a sewing machine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2028311B1 (en) |
| JP (1) | JP5508698B2 (en) |
| KR (1) | KR101410571B1 (en) |
| CN (1) | CN101372797B (en) |
| DE (1) | DE102007039596A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009048794A1 (en) | 2009-10-08 | 2011-04-14 | CHEE SIANG INDUSTRIAL CO., LTD., Wugu | Thread drawing device for sewing machine, has thread tension-primary control device arranged on base plate, thread tension-secondary control device arranged on base plate, and thread drawing-electromagnet provided on side of base plate |
| CN102220676A (en) * | 2010-04-19 | 2011-10-19 | 启翔针车（上海）有限公司 | Sewing machine needlework supplying device |
| CN102535038A (en) * | 2010-11-15 | 2012-07-04 | 杜尔克普—阿德勒股份公司 | Sewing machine and method for sewing a beginning of a seam with such a sewing machine |
| CN108360163A (en) * | 2017-01-26 | 2018-08-03 | 杜尔克普-阿德勒股份公司 | Manufacture linear slit starts the method for upper thread and is configured to implement the sewing machine of this method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5174414B2 (en) | 2007-10-05 | 2013-04-03 | Ｊｕｋｉ株式会社 | Sewing thread tension control device |
| CN102041645B (en) * | 2009-10-21 | 2012-10-17 | 启翔针车（上海）有限公司 | Stitching-starting thread-drawing device for automatic thread-cutting sewing machine |
| IT1396822B1 (en) * | 2009-11-11 | 2012-12-14 | Chee Siang Ind Co Ltd | FILTERHIP DEVICE AGENT TO START THE SEWING PROCESS FOR A SEWING MACHINE WITH THE POSSIBILITY OF AUTOMATIC WIRE CUTTING. |
| DE102011005198A1 (en) | 2011-03-07 | 2012-09-13 | Dürkopp Adler AG | Sewing machine and method for sewing a seam beginning with such a sewing machine |
| DE102012221060B3 (en) * | 2012-11-19 | 2014-02-06 | Dürkopp Adler AG | sewing machine |
| DE202012011059U1 (en) * | 2012-11-19 | 2014-02-20 | Dürkopp Adler AG | sewing machine |
| DE102017206499B3 (en) | 2017-04-18 | 2018-05-03 | Dürkopp Adler AG | sewing machine |
| DE102022203472A1 (en) | 2022-04-07 | 2023-10-12 | Dürkopp Adler GmbH | sewing machine |
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| US3654883A (en) * | 1970-05-14 | 1972-04-11 | Union Special Machine Co | Thread control mechanism for sewing machines |
| DE2815297C2 (en) * | 1978-04-08 | 1983-01-13 | Dürkoppwerke GmbH, 4800 Bielefeld | Controlled thread clamp of a sewing machine, arranged in the area between the thread lever and the eye of the needle and acting on at least one needle thread |
| DE3604299A1 (en) * | 1985-04-16 | 1986-10-16 | Kochs Adler Ag, 4800 Bielefeld | METHOD FOR PULLING THE FREE THREADING END OF A NEEDLE THREAD FROM THE TOP OF A SEWING MATERIAL ON ITS BASE AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE4132991C1 (en) * | 1991-10-04 | 1992-12-03 | Duerkopp Adler Ag, 4800 Bielefeld, De | Producing seam having short thread ends on bottom of workpiece - involves drawing back needle thread from underside of workpiece so that only short thread piece remains on underside |
| JPH06134162A (en) * | 1992-10-28 | 1994-05-17 | Juki Corp | Upper thread supply controller for sewing machine |
| JPH06190173A (en) * | 1992-12-24 | 1994-07-12 | Juki Corp | Device for preventing thread from falling off from needle in beginning of sewing in sewing machine |
| US5931107A (en) * | 1997-12-22 | 1999-08-03 | Mcdonnell Douglas Corporation | Advanced stitching head for making stitches in a textile article having variable thickness |
| DE10234251C1 (en) | 2002-07-27 | 2003-10-09 | Duerkopp Adler Ag | Sewing machine stitching mechanism relaxes the pressure on the fabric by the presser foot, when the upper thread is clamped between the needle and thread lever on the first seam stitch, for an extended duration with a thicker fabric |
| DE10344982A1 (en) * | 2003-09-27 | 2005-04-21 | Duerkopp Adler Ag | Thread tensioning device for a sewing machine |
| JP2008245731A (en) | 2007-03-29 | 2008-10-16 | Juki Corp | Sewing machine |
| DE102009048794A1 (en) * | 2009-10-08 | 2011-04-14 | CHEE SIANG INDUSTRIAL CO., LTD., Wugu | Thread drawing device for sewing machine, has thread tension-primary control device arranged on base plate, thread tension-secondary control device arranged on base plate, and thread drawing-electromagnet provided on side of base plate |
-
2007
- 2007-08-22 DE DE102007039596A patent/DE102007039596A1/en not_active Withdrawn
-
2008
- 2008-08-06 EP EP08014040.3A patent/EP2028311B1/en not_active Expired - Fee Related
- 2008-08-20 KR KR1020080081354A patent/KR101410571B1/en active IP Right Grant
- 2008-08-21 JP JP2008212776A patent/JP5508698B2/en active Active
- 2008-08-22 CN CN2008102133267A patent/CN101372797B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009048794A1 (en) | 2009-10-08 | 2011-04-14 | CHEE SIANG INDUSTRIAL CO., LTD., Wugu | Thread drawing device for sewing machine, has thread tension-primary control device arranged on base plate, thread tension-secondary control device arranged on base plate, and thread drawing-electromagnet provided on side of base plate |
| CN102220676A (en) * | 2010-04-19 | 2011-10-19 | 启翔针车（上海）有限公司 | Sewing machine needlework supplying device |
| CN102220676B (en) * | 2010-04-19 | 2012-11-14 | 启翔针车（上海）有限公司 | Sewing machine needlework supplying device |
| CN102535038A (en) * | 2010-11-15 | 2012-07-04 | 杜尔克普—阿德勒股份公司 | Sewing machine and method for sewing a beginning of a seam with such a sewing machine |
| CN102535038B (en) * | 2010-11-15 | 2015-05-06 | 杜尔克普—阿德勒股份公司 | Sewing machine and method for sewing a beginning of a seam with such a sewing machine |
| TWI498467B (en) * | 2010-11-15 | 2015-09-01 | Duerkopp Adler Ag | A sewing machine and a method of sewing the starting portion of the seam with such a sewing machine |
| CN108360163A (en) * | 2017-01-26 | 2018-08-03 | 杜尔克普-阿德勒股份公司 | Manufacture linear slit starts the method for upper thread and is configured to implement the sewing machine of this method |
| CN108360163B (en) * | 2017-01-26 | 2021-02-05 | 杜尔克普-阿德勒股份公司 | Method for producing a top thread for a seam and sewing machine configured to implement such a method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2028311A2 (en) | 2009-02-25 |
| JP2009045468A (en) | 2009-03-05 |
| CN101372797B (en) | 2013-01-02 |
| JP5508698B2 (en) | 2014-06-04 |
| DE102007039596A1 (en) | 2009-02-26 |
| EP2028311B1 (en) | 2013-10-09 |
| EP2028311A3 (en) | 2011-10-19 |
| KR20090020495A (en) | 2009-02-26 |
| KR101410571B1 (en) | 2014-06-23 |
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