EP0102524A2 - Entraînement et dispositif de contrôle de pilotage d'une machine à coudre - Google Patents

Entraînement et dispositif de contrôle de pilotage d'une machine à coudre Download PDF

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Publication number
EP0102524A2
EP0102524A2 EP83107569A EP83107569A EP0102524A2 EP 0102524 A2 EP0102524 A2 EP 0102524A2 EP 83107569 A EP83107569 A EP 83107569A EP 83107569 A EP83107569 A EP 83107569A EP 0102524 A2 EP0102524 A2 EP 0102524A2
Authority
EP
European Patent Office
Prior art keywords
drive
control device
unit
correction
transport
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.)
Granted
Application number
EP83107569A
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German (de)
English (en)
Other versions
EP0102524A3 (en
EP0102524B1 (fr
Inventor
Peter Dipl.-Ing. Kothe
Wolfgang Dipl.-Ing. Angersbach
Dan-Corneliu Dipl.-Ing. Raducanu
Peter Dipl.-Ing. Schüler
Michael Dipl.-Ing. Luft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quick-Rotan Elektromotoren GmbH
Original Assignee
Quick-Rotan Elektromotoren GmbH
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Filing date
Publication date
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Application filed by Quick-Rotan Elektromotoren GmbH filed Critical Quick-Rotan Elektromotoren GmbH
Publication of EP0102524A2 publication Critical patent/EP0102524A2/fr
Publication of EP0102524A3 publication Critical patent/EP0102524A3/de
Application granted granted Critical
Publication of EP0102524B1 publication Critical patent/EP0102524B1/fr
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/20—Control devices responsive to the number of stitches made

Definitions

  • the invention relates to a drive and control device for sewing machines, sewing machines and the like according to the preamble of claim 1.
  • a known drive device of this type (DE-OS 30 18 797)
  • the number of remaining stitches carried out after the end detection can be carried out by means of the correction unit change by one. This ensures that the maximum deviation of the last needle insertion is a maximum of half a stitch length in front of or behind the target seam end.
  • accuracy is still much less than the level of accuracy that can be achieved by an experienced seamstress without automatic seam length control.
  • the seam offset achieved with the known arrangement is still too great, especially with high-quality sewing material.
  • the invention has for its object to provide a drive and control device which has the appearance of a seam further improved on an automated sewing machine.
  • the solution according to the invention provides for the formation of remaining stitches with an automatically adjusted stitch length if necessary.
  • the deviation of the last needle insertion from the target insertion point can be made considerably less than half a stitch length.
  • the actual transport phase i.e. the phase during which the sewing material can be moved relative to the needle during each rotation of the main or arm shaft of the sewing machine, depending on the model and machine wear. This fact can be taken into account by the further training according to claim 2.
  • the transmission factor that is to say a correction factor between the angle which the main shaft assumes at the time of the end detection compared to a predetermined reference angle position, for example the angle position "needle down", and the associated transport phase can be constant or dependent on the transport phase.
  • the An drive and control device preferably designed according to claim 3.
  • the information required for the stitch length adjustment is advantageously provided by a unit of the type mentioned in claim 4.
  • the correction unit has an actuating device according to claim 5.
  • This makes it possible, for example, to measure the length of the last stitch or the penultimate stitch so that the last needle insertion coincides with the target seam end.
  • a seam pattern is achieved that can practically no longer be distinguished from that of a hand seam. At most, it can be disturbing that the length of the correction stitch, which deviates from the length of the other stitches, is striking in the seam pattern.
  • the drive device can advantageously be designed according to claim 6 in accordance with a modified embodiment. With this solution, any necessary larger stitch length corrections are distributed over several remaining stitches. The correction is practically invisible.
  • the seam appearance is the same or better than that of a hand seam.
  • the device can be designed so that the stitch length is only shortened or only lengthened. However, the correction becomes less noticeable if the stitch length can be lengthened or shortened depending on the needle position at the time of the final detection is, ie a correction to both sides is possible, the rest of the correction unit is preferably designed according to claim 8.
  • the correction unit can act on the stitch adjuster that is usually present in sewing machines. However, it can also be coupled to a transport unit which, with the stitch length setting unchanged, can be brought out of engagement with the sewing material as a function of the correction device in order to vary the stitch length in this way. According to a further modification, it is possible to couple the correction device directly to a separate transport drive and thus to effect the stitch length adjustment by influencing the transport drive itself. In this case, the transport speed and / or the transport duration for the remaining stitch or stitches to be corrected can be set.
  • the correction device can influence the X drive and the Y drive separately or together as required.
  • the drive and control device according to the invention is suitable not only for sewing machines in which the sewing material movement takes place exclusively while the needle is out of engagement with the sewing material, but also for sewing machines with needle transport. In the latter case, a synchronization device according to claim 14 is to be provided.
  • the recognition unit result from claims 15 to 20 and 22.
  • the bisector can be determined by means of the recognition device and the target seam end automatically lay on the bisector.
  • Recognition units with a row of detector cells or a detector cell matrix also allow additional corrections to be made in accordance with claim 19.
  • Fig. 2 shows schematically the arm head 10 of a sewing machine with needle 11 and presser foot 12.
  • a transmission light barrier is provided as the detection unit, which consists of a light source 15 and a receiver 16.
  • the receiver 16 is, for example, a planar photodiode, which is attached to the material support 17.
  • the receiver 16 is at a distance from the needle 11 in the sewing direction.
  • the sewing material 13, 14 is advanced by a transport (not shown) in the feed direction indicated by the arrow 18.
  • the garment 13 and the label 14 initially cover the receiver 16.
  • the output signal of the receiver 16 has a low level 19 (FIG. 3).
  • the output signal of the receiver 16 jumps to a higher level 20.
  • the jump from level 19 to level 20 switches on a preselection stitch counting unit which specifies a predetermined number of remaining stitches. It is the number of stitches that must still be carried out after the level jump 19, 20 (the end detection) in order to achieve the target seam end indicated at 22.
  • the preselection stitch counting unit can, as is known (DE-OS 30 18 797), be designed as a separate stitch counter. However, the preselection stitch counting unit 21 is preferably integrated into a central control unit 24 (FIG. 1) in terms of hardware or software.
  • the last needle insertion 25 coincides with the target insertion point located at a predetermined distance a from the material edge 23 only if the distance between the end detection point (in FIG 4 indicated at 26) and the target seam end 22 is an integral multiple of the remaining stitch length.
  • the needle 11 can assume any position at the time of the end detection.
  • FIG. 4 and FIG. 5 Three further examples of different needle positions in the end recognition are illustrated in FIG. 4 and FIG. 5, the latter also being able to be viewed as an enlarged plan view of the end face of the main shaft of the sewing machine. It is assumed that the main shaft rotates in the direction of arrow 27.
  • a predetermined reference angular position of the main shaft for example the angular position corresponding to the lower position of the needle 11, is denoted by item 1.
  • the sewing material may only be transported while the needle 11 is pulled out of the sewing material. This leads to the maximum transport area indicated in FIG. 5.
  • the end detection now takes place in an angular position 31 distant from the reference position Pos 1 by the angle ⁇ 1
  • the last needle insertion would be at point 32 in FIG. 4 without correction.
  • the correction method according to DE-OS 30 18 797 last needle punctures 35 and 36 as shown in FIG. 4.
  • the last needle insertion therefore only coincides with the target seam end 22 (at 25); in most cases it is more or less (up to half a stitch length) away from the target seam end 22.
  • a correction unit controlled by the recognition unit (generally designated 28 in FIG. 1) is provided in the present case, which automatically adjusts the length of at least one of the remaining stitches depending on the respective position of the needle 11 at the time of the final recognition.
  • This correction unit 29 is preferably also integrated into the central control unit 24 in terms of hardware or software.
  • a correction is made in the last stitch.
  • an angle of 360 ° corresponds to a full stitch length.
  • the last seam stitches 39, 40 and 41 are at the target seam end 22 in the end detection in the angular positions 31, 33, 34.
  • the angle ⁇ or the associated complementary angle ⁇ are related to a fixed reference position of the main shaft , for example the position Pos 1 (needle down), via an incremental position sensor 37 measured and stored in a memory 38 for the correction in the last stitch together with the transport position present at the end detection.
  • the position sensor 37 is directly coupled to the main shaft of the sewing machine 43, which is indicated at 42 in FIG. 1.
  • An input and storage unit 44 serves for the input and storage of the translation factor.
  • the correction unit 29 acts on a stitch regulator or an independent transport drive (block 45 in FIG. 1).
  • the correction can also be carried out for a stitch other than the last stitch, for example the penultimate stitch. This is particularly recommended if the stitch length is corrected by adjusting the stitch adjuster on the sewing machine.
  • the variable stitch length correction can also be divided into several remaining stitches.
  • a modified embodiment of the invention is explained with reference to FIG. 6, in which a stitch length correction to plus and minus by a predetermined fraction of the respective full stitch length is provided.
  • the target seam end, the sewing material edge and the end detection point are again designated with 22, 23 and 26. It is assumed that the stitch length can be increased by 20% and shortened by 20%.
  • the distance a is the desired constant distance between the target seam end 22 and the sewing material seam 23.
  • the angle ⁇ is measured and stored when the end detection point 26 is reached.
  • the angular position of the sewing machine 43 which is driven by an unillustrated drive motor, is determined by the incremental position transmitter 37, which emits signals as a function of fractions of a full revolution of the main shaft 42. It is assumed that a full revolution of the main shaft 42, ie a rotation angle of 360 °, corresponds to a number N of pulses from the position transmitter 37.
  • the position encoder pulse number corresponding to the angle ⁇ is denoted by N 1 .
  • N 2 / 0.2 N is calculated and then rounded down to an integer amount. This amount corresponds to the number of last stitches to be extended by 20%.
  • the stitch length correction according to FIG. 6 is also not limited to correction steps of 20%. Rather, correction steps of X% are generally possible. According to the procedure outlined above, here again or compared. For example, if it is determined that then delivers rounded down to a whole number the number of corrections to be carried out with -X%. If there is no correction; if there is a single correction with -X%; if there are two corrections with -X% and so on. Is against then delivers rounded down to an integer the number of corrections to be made with + X%. If there is no correction; if there is a single correction with + X%; if there are two corrections with + X%; if three stitch lengths are extended by + X% each.
  • the correction therefore only takes place if the deviation is greater than 0.5X, i.e. is greater than half the smallest possible shortening or smallest possible extension.
  • the transmission factor between the needle position and the transport phase is constant and equal to 1.
  • This condition leads to the specified correction algorithms.
  • unit 44 of FIG. 1 enters a translation factor k ⁇ T which differs from 1 and which may be constant or a function of the transport phase at the time of the end recognition, the value ⁇ in the correction algorithms mentioned must be replaced by ⁇ k ⁇ T .
  • the translation factor can, for example, be specified digitally in terms of hardware. It can also be taken from the software, for example, from tables provided in an EPROM memory. In the event of a transport phase dependency of the translation factor, the unit 44 is expediently controlled via the memory 38.
  • the correction unit 28 can both in the embodiment according to FIGS. 4 and 5 as well as in that according to FIG. 6 can be connected to an actuator 47 which in turn is connected to the stitch regulator, e.g. in form of
  • Stitch length adjusting wheel 48 of the sewing machine 43 acts, as indicated in Fig. 7.
  • the actuator must have a con allow continuous or multi-stage variation of the stitch length, while for the embodiment according to FIG. 6 a stitch length adjustment by 2 X% is sufficient.
  • the actuator 47 can be a stepper motor, for example.
  • the correction unit 29 can control a transport unit, which during the execution of the remaining stitches for setting the stitch length can be brought out of engagement with the sewing material for part of the transport movement.
  • a solution of this kind is outlined in Fig. 8.
  • the main shaft 42 of the sewing machine 43 is in turn driven in a manner not shown by a drive motor.
  • the incremental position sensor 37 On the main shaft 42 or an extension of this shaft sits the incremental position sensor 37, which consists, for example, of a reticle 50 interacting with a light barrier.
  • the sewing material 13, 14 is transported with the aid of a separate motor 51, to which a transport wheel 52 is connected.
  • the transport wheel 52 can, optionally together with the motor 51, be adjusted upwards, ie for transport to the sewing material, or downwards (away from the sewing material if no transport is desired) by means of an electromagnet 53.
  • the drive of the main shaft 42 and the electromagnet 53 are in an incremental manner, not shown. electrical shaft synchronized with each other, which replaces the mechanical transmission, which in mechanical sewing machines in a known manner and synchronized the needle movement.
  • An actuator 54 moves the presser foot 55 to the material to be sewn and then enables transport by the drive units 51, 52.
  • the electromagnet 53 or an equivalent actuator can be dispensed with if the transport motor 51 is designed in such a way that it starts within the time period provided for the formation of a remaining stitch to which the desired speed of rotation corresponding to the material speed v can be accelerated and braked to a standstill again.
  • the transport wheel 53 can remain in constant contact with the sewing material.
  • the transport takes place according to the curves according to FIG. 9.
  • the sewing material is only in the permitted sector B 1 ⁇ 0 ⁇ A 1 of FIGS. 9 and 10 moves. Within this permitted sector, the needle 11 is definitely outside the sewing material.
  • the area A ⁇ U ⁇ B that is blocked for transport is hatched in FIG. 9.
  • the stitch length can be influenced both by varying the material speed v k and by the transport time t k . Different possible variations are shown in FIG. 9 with the speeds v and v 2 as well as the different ones Trans p duration durations t 1 , t 2 and t 3 indicated.
  • the zones B ⁇ U (needle down) ⁇ A and B 1 ⁇ 0 (needle up) ⁇ A 1 and the transport times t k are detected or set at a set material speed v k by counting the pulses from the position sensor 37 because the time for rotating the main shaft 42 from B 1 through 0 to A 1 is a function of the speed of the main shaft.
  • a synchronization device which guides the transporter in close dependence on the, for example, sinusoidal horizontal needle movement in such a way that the transport of substances takes place even when the needle is at the bottom.
  • An embodiment of such a synchronization device is shown in FIG. 18.
  • the position transmitter 37 controls a generator 56 which delivers a sine-like output signal U g according to FIG. 19. This signal is fed to a voltage-controlled oscillator 57, whose output signal f VCO is controlled by the transport motor 51, which in this case is designed as a stepping motor.
  • the half waves of the signal U g are synchronous with the horizontal component of the movement of the needle immersed in the material, while the amplitude of the signal U g is proportional to the speed of the main shaft. Since f VCO is proportional to U g and the walking speed of the transport motor 51 is in turn proportional to f VCO , the sewing material in the way you want.
  • a direction signal for a stitch reversal can be applied to the transport motor 51 via a line 58.
  • a reflection light barrier known per se (DE-OS 30 18 797) can also be provided for the end detection.
  • the detection unit 28 can instead also have a UV light transmitter / receiver unit.
  • parts of the fabric to be sewn on, such as bags, labels or the like can be completely or completely soaked in an ink that is sensitive to UV light and only visible in UV light.
  • the UV light transmitter / receiver unit detects the border between the UV-responsive ink and areas that are not soaked with such an ink.
  • FIG. 11 schematically shows a further modified embodiment of the detection device 28. It is a shadow detector with two light sources 59, 60 which can be switched on alternately and a light receiver 61.
  • the light source 59 lying in front of the edge of the label 14 in the sewing direction produces when the edge is hit by the collimated light beam from this light source, a shadow indicated at 62.
  • the collimated light beam from the light source 60 located in the sewing direction behind the label edge 14 does not cast such a shadow.
  • the detection unit 28 can also have a row of detector cells, for example photodiodes, which are oriented in the seam direction and which respond to the contrast between the label 14 and the base material 13.
  • This cell row can preferably be a CCD-IC.
  • Such an integrated circuit module is indicated at 63 in FIG. 8.
  • a detection unit with a row of detector cells has the advantage that the edge can be monitored across several cells. This allows not only the position of the edge but also its speed to be recorded with reference to the row of detector cells. It is possible to check the correction that has been made and, if necessary, then to carry out a second correction if the first correction has not yet been successful.
  • the recognition unit 28 can be equipped with a detector cell matrix.
  • a detector cell matrix can be constructed from one or more CCD array ICs.
  • the image of the sewing material that can be positioned under a CCD camera, e.g. a label 14 on which base material 13 is detected and compared in a computer system with an initially stored sample image.
  • a detection unit with a button that scans a sewing material fastening frame.
  • the label 14, a pocket or the like is placed over the base material 13 and then fastened with the aid of a frame, for example made of metal, indicated schematically at 65 in FIG. 13.
  • the unit consisting of base material 13, label 14 and fastening frame 65 can then be processed in a sewing machine as on a coordinate table.
  • the material is moved in both directions X and Y.
  • the central computer of the automatic sewing machine controls the drive of the main shaft and thus the needle movement as well as an X drive and a Y drive in such a way that, for example, the contour A 0 - A 1 - A 2 - A 3 is sewn according to FIG.
  • the speed n of the main shaft determines the material speed v material .
  • the mean fabric speed v fabric changes depending on the machine speed n, for example when producing the seam from A 2 to A 3 , because the sewing machine must be accelerated from standstill to working speed and braked to a standstill again at the end of the seam.
  • FIG. 15 which shows the area ⁇ of FIG. 14 on a time-stretched scale
  • the transport time that is available for each stitch decreases during acceleration.
  • the transport speed must be increased accordingly within the transport phases available for the individual stitches.
  • the correction unit in the area of the seam end also provides the necessary correction in this case by shortening or lengthening the stitch length of one or more remaining stitches.
  • the end detection can take place, for example, via a button of the detection unit, which scans the fastening frame 65.
  • FIG. 16 shows a basic circuit diagram for a sewing system with coordinate drive.
  • a two-motor control drive is provided with a motor 67 for transport in the X direction and a motor 68 for transport in the Y direction.
  • the main shaft 42 of the sewing machine 43 is driven by a motor 71.
  • the position sensor 37 is connected to the main shaft 42.
  • Actuators for additional functions such as thread wiping, thread cutting, presser foot actuation and the like are shown at 73, 74 and 75, respectively.
  • the actuators 73 to 75 are controlled via associated power stages 76, 77 and 78.
  • a thread monitoring member 79 monitors the correct thread feed.
  • Information about the pattern recognition and the movement of the sewing material relative to the presser foot, ie to the needle 11, comes from a camera 80 which is preferably equipped with a CCD array and directed to the sewing material.
  • This information is processed in an image processing unit, for example a CCD unit, 82 and by forwarded there to a central unit 83, which is expediently a microprocessor master unit.
  • the central unit 83 coordinates the movements of the main shaft 42 and the transport in the axes X and Y via corresponding power amplifiers 84, 85 and 86.
  • the coordination takes place with the interposition of a slave microcomputer 87.
  • the additional functions such as thread wiping, thread cutting, presser foot actuation etc. , are controlled directly via the ports of the central unit 83.
  • the camera 80 monitors the material to be sewn; it provides data for the correction processes and positioning explained above.
  • this collar is first recognized by the camera 80 as a pattern on the table top of the sewing machine. Then the sewing process is initiated in such a way that the collar in
  • Sewing direction (arrow 91) is sewn up to corner 92.
  • the camera 80 monitors the seam and provides information to the central unit 83.
  • the virtual bisector 94 which runs through the intersection PI of the seam directions, is formed for the desired seam directions AA, BB that run at a distance a from the collar edge 93 based on the pattern recognition .
  • Actuators 97 (for the X direction) and 98 (for the Y direction) are actuated by the central unit 83 via power stages 95, 96, which actuators can correspond, for example, to the actuator 53 in FIG. 8. If necessary, the stitch length of one or more remaining stitches is corrected so that the first seam ends exactly at point P1 or in any case at a point lying on the bisector 94. From there, sewing begins in the direction B-B.
  • the input console 100 is connected to the central unit 83 via an input / output unit 101.
  • To the Central unit 83 is also connected to a buffered RAM memory 102 for storing the data relating to angular positions, pattern recognition, translation factor, type of synchronization between needle and transport movement and the like.
  • the data transmission between the position transmitter 37, the central unit 83 and the slave microcomputer 87 takes place via a position transmitter input / output unit 103 and a pulse management unit 104. Additional hardware, such as counters, flip-flops, etc., is indicated at 105.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP83107569A 1982-08-02 1983-08-01 Entraînement et dispositif de contrôle de pilotage d'une machine à coudre Expired EP0102524B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823228789 DE3228789A1 (de) 1982-08-02 1982-08-02 Antriebs- und steuervorrichtung fuer naehmaschinen, naehautomaten und dergleichen
DE3228789 1982-08-02

Publications (3)

Publication Number Publication Date
EP0102524A2 true EP0102524A2 (fr) 1984-03-14
EP0102524A3 EP0102524A3 (en) 1984-10-03
EP0102524B1 EP0102524B1 (fr) 1987-02-04

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Application Number Title Priority Date Filing Date
EP83107569A Expired EP0102524B1 (fr) 1982-08-02 1983-08-01 Entraînement et dispositif de contrôle de pilotage d'une machine à coudre

Country Status (5)

Country Link
US (1) US4602577A (fr)
EP (1) EP0102524B1 (fr)
JP (1) JPS5944295A (fr)
DE (2) DE3228789A1 (fr)
ES (1) ES523566A0 (fr)

Cited By (9)

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FR2572427A1 (fr) * 1984-10-25 1986-05-02 Tokyo Juki Industrial Co Ltd Appareil pour regler automatiquement le pas d'une couture dans une machine a coudre.
FR2582682A1 (fr) * 1985-06-03 1986-12-05 Prouvost Sa Procede pour rendre automatique l'execution d'une fin de couture a une distance determinee du bord de l'etoffe et machine a coudre mise en oeuvre
EP0195424A3 (en) * 1985-03-20 1987-04-01 Brother Kogyo Kabushiki Kaisha Sewing machine
EP0204628A3 (en) * 1985-06-03 1987-04-15 Prouvost S.A. Method and sewing machine for automatically producing a seam at a well-defined distance from the border of the workpiece
DE3617204C1 (de) * 1986-05-22 1987-10-01 Duerkoppwerke Vorrichtung zum Herstellen von an vorbestimmter Stelle endenden Naehten
FR2596428A1 (fr) * 1986-03-28 1987-10-02 Prouvost Sa Procede et machine a coudre pour realiser automatiquement une fin de couture a une distance determinee du bord d'une etoffe
DE3733256A1 (de) * 1987-10-01 1989-04-20 Quick Rotan Elektromotoren Sensorvorrichtung
EP0309069A3 (en) * 1987-09-25 1989-05-03 Yaacov Sadeh Computerized sewing apparatus
CN101270533B (zh) * 2007-03-19 2012-10-03 兄弟工业株式会社 圆头锁眼缝纫机

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JPS6182783A (ja) * 1984-09-28 1986-04-26 ジューキ株式会社 ミシンの定位置停止装置
JPS61103491A (ja) * 1984-10-25 1986-05-21 ブラザー工業株式会社 材料片所定量送り装置
WO1986003034A1 (fr) * 1984-11-13 1986-05-22 Quick-Rotan Elektromotoren Gmbh Dispositif processeur pour machines a coudre
JPS61181486A (ja) * 1985-02-08 1986-08-14 ジューキ株式会社 ミシンの布送り量自動変更装置
JPS61249494A (ja) * 1985-04-27 1986-11-06 ジューキ株式会社 ミシンの布送り量自動変更装置
JPS625388A (ja) * 1985-06-29 1987-01-12 ブラザー工業株式会社 ミシンにおける布端部の定寸縫い装置
JPS625391A (ja) * 1985-06-29 1987-01-12 ブラザー工業株式会社 ミシンにおける布端部の定寸縫い装置
JPS62129095A (ja) * 1985-11-29 1987-06-11 ジューキ株式会社 ミシンの１針縫い装置
JPH0724714B2 (ja) * 1986-01-31 1995-03-22 ジュ−キ株式会社 送り量検知装置及び布端検知制御装置
JPS62179494A (ja) * 1986-01-31 1987-08-06 ジューキ株式会社 ミシンの布端検知装置の自動感度設定装置
DE3738059C1 (de) * 1987-11-09 1989-04-20 Kurt Jauch Drehautomat mit drehantreibbarem Werkzeugkopf und Fuehrungseinrichtung fuer Werkstoffstangen
DE3818457C1 (fr) * 1988-05-31 1989-12-28 Duerkoppwerke Gmbh, 4800 Bielefeld, De
DE9216569U1 (de) * 1992-12-04 1993-01-21 He-Tec Sewing Machines GmbH, 6087 Büttelborn Nähvorrichtung
DE19505483A1 (de) * 1995-02-17 1996-08-22 Rombold Syst Gmbh Festonierverfahren und Festoniermaschine
US5790687A (en) * 1996-06-18 1998-08-04 Levi Strauss & Co. Method and apparatus for the optical determination of the orientation of a garment workpiece
DE19882317C2 (de) * 1998-02-27 2003-12-04 Mitsubishi Electric Corp Steuereinrichtung für eine Nähmaschine
JP4799799B2 (ja) * 2000-05-29 2011-10-26 ゲー エム パフ アクチエンゲゼルシャフト イン インゾルヴェンツ 縫い目端点を制御するための装置を備えたミシン
CH697501B1 (de) 2004-05-28 2008-11-14 Bernina Int Ag Vorrichtung und Verfahren zum Erfassen und Verarbeiten von Messgrössen bei einer Nähmaschine.
JP5158563B2 (ja) * 2007-12-01 2013-03-06 ブラザー工業株式会社 鳩目穴かがりミシン
JP6962713B2 (ja) * 2017-06-01 2021-11-05 Juki株式会社 ミシン

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
FR2572427A1 (fr) * 1984-10-25 1986-05-02 Tokyo Juki Industrial Co Ltd Appareil pour regler automatiquement le pas d'une couture dans une machine a coudre.
GB2168085A (en) * 1984-10-25 1986-06-11 Tokyo Juki Industrial Co Ltd Apparatus for automatically adjusting the stitch pitch of a sewing machine
GB2168085B (en) * 1984-10-25 1989-05-24 Tokyo Juki Industrial Co Ltd Apparatus for automatically adjusting the stitch pitch of a sewing machine
EP0195424A3 (en) * 1985-03-20 1987-04-01 Brother Kogyo Kabushiki Kaisha Sewing machine
FR2582682A1 (fr) * 1985-06-03 1986-12-05 Prouvost Sa Procede pour rendre automatique l'execution d'une fin de couture a une distance determinee du bord de l'etoffe et machine a coudre mise en oeuvre
EP0204628A3 (en) * 1985-06-03 1987-04-15 Prouvost S.A. Method and sewing machine for automatically producing a seam at a well-defined distance from the border of the workpiece
US4691652A (en) * 1985-06-03 1987-09-08 Prouvost S.A. Method and sewing machine for automatically providing end of stitching at a given distance from the edge of a piece of fabric
FR2596428A1 (fr) * 1986-03-28 1987-10-02 Prouvost Sa Procede et machine a coudre pour realiser automatiquement une fin de couture a une distance determinee du bord d'une etoffe
DE3617204C1 (de) * 1986-05-22 1987-10-01 Duerkoppwerke Vorrichtung zum Herstellen von an vorbestimmter Stelle endenden Naehten
EP0309069A3 (en) * 1987-09-25 1989-05-03 Yaacov Sadeh Computerized sewing apparatus
DE3733256A1 (de) * 1987-10-01 1989-04-20 Quick Rotan Elektromotoren Sensorvorrichtung
CN101270533B (zh) * 2007-03-19 2012-10-03 兄弟工业株式会社 圆头锁眼缝纫机

Also Published As

Publication number Publication date
DE3369713D1 (en) 1987-03-12
JPS5944295A (ja) 1984-03-12
ES8403543A1 (es) 1984-04-01
DE3228789A1 (de) 1984-02-02
EP0102524A3 (en) 1984-10-03
EP0102524B1 (fr) 1987-02-04
ES523566A0 (es) 1984-04-01
US4602577A (en) 1986-07-29

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