EP2000570A1 - Dispositif d'actionnement de coupure de fil d'une machine à coudre - Google Patents

Dispositif d'actionnement de coupure de fil d'une machine à coudre Download PDF

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Publication number
EP2000570A1
EP2000570A1 EP08157444A EP08157444A EP2000570A1 EP 2000570 A1 EP2000570 A1 EP 2000570A1 EP 08157444 A EP08157444 A EP 08157444A EP 08157444 A EP08157444 A EP 08157444A EP 2000570 A1 EP2000570 A1 EP 2000570A1
Authority
EP
European Patent Office
Prior art keywords
cam
cam follower
groove
sewing machine
thread
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.)
Withdrawn
Application number
EP08157444A
Other languages
German (de)
English (en)
Inventor
Osamu Kasai
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.)
Juki Corp
Original Assignee
Juki Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Juki Corp filed Critical Juki Corp
Publication of EP2000570A1 publication Critical patent/EP2000570A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • 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
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread

Definitions

  • the present invention relates to a thread cut actuating device of a sewing machine operable to cut a thread by actuating a moving knife in accordance with a cam which rotates interlockingly with a driving shaft.
  • JP 2000-317178 A discloses a thread cut actuating device including a cam having a cam groove and provided on a driving shaft such as a lower shaft of a sewing machine, a cam follower disposed to face the cam groove, and an actuator which moves the cam follower so as to engage with or move apart from the cam groove.
  • a driving shaft such as a lower shaft of a sewing machine
  • a cam follower disposed to face the cam groove
  • an actuator which moves the cam follower so as to engage with or move apart from the cam groove.
  • Fig. 6 shows a portion of a thread cut actuating device 100 disclosed JP 2000-317178 A .
  • the thread cut actuating device 100 includes a groove cam 101 rotatably supported on a driving shaft (not shown), a cam follower 102 which is engageable with and separable from a groove portion 101a of the groove cam 101, and a actuating member 103 which is movable toward and away from the cam follower 102, and an actuator 104.
  • the actuator 104 When the actuator 104 is driven, the actuating member 103 moves the cam follower 102 to enter an opening portion 101b of the groove portion 101a.
  • the cam follower 102 is coupled to a moving knife (not shown).
  • the driving operation of the actuator 104 is controlled by a control device (not shown).
  • a plunger 104a of the actuator 104 is moved upward in Fig. 6 , thereby rotating the actuating member 103 around a shaft 103 a to push the cam follower 102 leftward in Fig. 6 and to move the cam follower 102 toward the opening portion 101b of the groove cam 101.
  • the groove cam 101 is rotated together with a driving shaft, and the cam follower 102 placed inside the groove cam 101 from the opening portion 101b.
  • the cam follower 102 is led to an inside of the groove portion 101 a by an edge portion 101c of the groove cam 101, and is thus engaged with the groove portion 101a.
  • the cam follower 102 is reciprocated in an almost axial direction of the groove cam 101 in conformity to a shape of the groove portion 101a so that the moving knife coupled to the cam follower 102 is reciprocated to cut a thread in cooperation with a fixed knife (not shown).
  • a thread cut actuating device (10) of a sewing machine (1) includes: a moving knife (14) for cutting a thread; a driving shaft (11) which rotates interlockingly with a driving motor (2); a cam (12) having a cam groove (12c) for driving the moving knife (14), the cam (12) being rotatable by the driving shaft (11); detecting means (3) for detecting a rotating angle of the cam (12); a cam follower (13) coupled to the moving knife (14), the cam follower (13) being movable to engage with and move apart from the cam groove (12c); and an actuator (16) which, when actuated, moves the cam follower (13) to engaged with the cam groove (12c).
  • the thread cut actuating device (10) is characterized in that it further comprises control means (4) for controlling the drive motor (2) and the actuator (16) so as to: rotate the cam (12); stop the rotation of the cam (12) when the rotational angle of the cam, at which the cam follower (13) is able to enter the cam groove (12c), is detected by the detection means (3); actuate the actuator (16); and resume the rotation of the cam (12) after actuating the actuator (16).
  • the detecting means is provided for detecting the rotating angle of the cam, and may be provided in the driving motor or on the driving shaft.
  • the driving shaft serves to rotate the cam, and may be a lower shaft or an upper shaft of the sewing machine, or another shaft coupled to the lower shaft or the upper shaft.
  • the cam may be directly fixed to the driving shaft such as the lower shaft or the upper shaft, or may be fixed to a rotating shaft interlocking with the driving shaft.
  • the driving motor serves to rotate the driving shaft, and may be a sewing machine motor or another motor which is provided only for cutting a thread.
  • control means (4) controls the driving motor (2) such that, when resuming the rotation of the cam (12), the cam (12) is rotated at a low rotating speed.
  • the "low rotating speed” is a rotating speed that is lower than a rotating speed of the cam before the stoppage of the rotation of the cam, and is a rotating speed that is suitable for leading the cam follower, which has entered an inlet of the cam groove, into the cam groove continuously after the entering into the inlet.
  • the control means carries out a control for temporarily stopping the driving motor.
  • the rotation of the cam is temporarily stopped so that it is possible to ensure a time required for the convergence of the rebound of the cam follower. Accordingly, it is possible to prevent the device from being stopped due to an engagement of the cam follower with an edge portion in the vicinity of the inlet of the cam groove or from being broken by a mechanical load in that case. Consequently, a thread cutting operation can be reliably carried out so that reliability and durability of the sewing machine can be enhanced.
  • control means stops the driving operation of the motor when the detecting means detects the rotating angle of the cam at which the cam follower can enter the cam groove, and drives the motor again after the cam follower enters the inlet by the driving operation of the actuator. Consequently, it is not necessary to strictly control a driving timing of the actuator with respect to such a timing as to meet the rotating angle of the cam, that is, the angle at which the cam follower can enter the inlet of the cam groove. Thus, it is possible to considerably relieve an operation failure caused by a shift of the timing. In other words, the cam follower moved by the driving operation of the actuator can enter the inlet of the cam groove more reliably. Accordingly, the thread cutting operation can be carried out more reliably so that the reliability of the sewing machine can be enhanced.
  • the cam starts the rotation at a low rotating speed after a temporary standby of the cam. Even if a standby time of the cam is insufficient for the convergence of the rebound of the cam follower, consequently, the cam is rotated at a low rotating speed after the standby time so that the time required for the convergence of the rebound of the cam follower can be ensured.
  • a thread cutting failure of the thread cut actuating device is caused by a jump of the cam follower out of the cam groove due to the rebound of the cam follower and the stoppage of the thread cut actuating device is generated by the engagement of the cam follower with the edge. Accordingly, it is possible to provide a sewing machine having a higher reliability and durability.
  • a thread cut actuating device 10 when an operator manipulates a thread cutting switch so that a signal for giving an instruction for cutting a thread is generated, for example, a thread cut actuating device 10 is operated to automatically cut a thread through a cooperation of a moving knife with a fixed knife.
  • the sewing machine 1 includes a sewing machine motor 2 acting as a driving motor which serves to rotate an upper shaft (not shown) provided in a direction in which an arm portion extends, an encoder 3 acting as detecting means provided on the upper shaft or the sewing machine motor and serving to detect a rotating angle of the upper shaft, a lower shaft 11 acting as a driving shaft coupled to be rotated synchronously with the upper shaft, and a driving unit 4 acting as "control means" for controlling various operations of the sewing machine 1 including a thread cutting operation.
  • a sewing machine motor 2 acting as a driving motor which serves to rotate an upper shaft (not shown) provided in a direction in which an arm portion extends
  • an encoder 3 acting as detecting means provided on the upper shaft or the sewing machine motor and serving to detect a rotating angle of the upper shaft
  • a lower shaft 11 acting as a driving shaft coupled to be rotated synchronously with the upper shaft
  • a driving unit 4 acting as "control means" for controlling various operations of the sewing machine 1 including a thread cutting operation.
  • the upper shaft is rotated to operate a well-known needle bar vertical moving mechanism.
  • the lower shaft 11 is rotated interlockingly with the rotation of the upper shaft so that well-known shuttle and feeding mechanisms are operated.
  • the rotating angle of the upper shaft is detected by the encoder 3 and is output to the driving unit 4.
  • the upper shaft and the lower shaft 11 are interlocked with each other at a certain rotation ratio. Therefore, rotating angles of the lower shaft 11 and a cam 12 fixed to the lower shaft 11 which will be described below can also be detected from the rotating angle of the upper shaft which is detected by the encoder 3.
  • the thread cut actuating device 10 includes the cam 12 provided on the lower shaft 11 and rotated with the rotation of the lower shaft 11, a cam follower 13 provided movably in an almost disposing direction of the lower shaft 11 through an engagement with a cam groove 12c provided on the cam 12, a moving knife 14 coupled to the cam follower 13 through a coupling link 15 and rotated in a predetermined direction interlockingly with a movement of the cam follower 13, and an air cylinder 16 for pressing and moving the cam follower 13 toward the cam 12 side.
  • the cylindrical cam 12 is concentrically fixed and supported on the lower shaft 11. More specifically, the cam 12 is rotated integrally with the lower shaft 11. As described above, the encoder 3 can detect the rotating angle of the lower shaft 11 and can thus detect the rotating angle of the cam 12 provided on the lower shaft 11.
  • An outer peripheral surface 12a of the cam 12 is provided with the cam groove 12c with which the cam follower 13 can be engaged.
  • the cam groove 12c is formed to be displaced in an axial direction so as to cause the moving knife 14 to carry out a reciprocating operation corresponding to the rotation of the cam 12.
  • the cam follower 13 is supported in a certain position on an end face 12b side of the cam 12 through a cam follower support member 13a. Moreover, the cam follower support member 13a is supported rotatably around a rotating fulcrum 13b provided on a sewing machine frame which is not shown. Consequently, the cam follower 13 is reciprocated within a rotating range of the cam follower support member 13a.
  • the cam groove 12c has an outlet 12h and the cam follower 13 moved along the cam groove 12c from the outlet 12h is led outward from the cam groove 12c to return the cam follower 13 to a standby position (a position shown in Fig. 1 ).
  • the moving knife 14 having a concave hook portion 14a provided in a tip portion is disposed to be reciprocated and rotated between a shuttle mechanism and a throat plate (not shown).
  • the moving knife 14 hooks and catches a needle thread and a bobbin thread which are led downward from the throat plate through the hook portion 14a by a forward rotation (in a downward direction of Fig. 1 ).
  • the moving knife 14 is rotated backward (in an upward direction of Fig. 1 ) to come in contact with a fixed knife (not shown) provided in a predetermined position below the throat plate, thereby cutting the needle and bobbin threads.
  • the fixed knife and the moving knife 14 function as "thread cutting means".
  • the needle thread may be caught by the hook portion 14a of the moving knife 14 in at least one place of a loop of the needle thread formed below the throat plate.
  • the moving knife 14 In the case in which the cam follower 13 is placed in a maximum displacing position 12g of the cam groove 12c, the moving knife 14 is moved most forward to catch the needle and bobbin threads. Then, the moving knife 14 is moved backward to cut the caught threads through the movement of the cam follower 13 returned from the outlet 12h to the standby position. Moreover, the moving knife 14 is provided to stand by in a position in which the sewing work of the sewing machine 1 can be prevented from being disturbed in the case in which the cam follower 13 is not engaged with the cam groove 12c.
  • the air cylinder 16 has at least a plunger 16a provided opposite to the end face 12b of the cam 12 with a tip portion thereof interposing the cam follower 13 therebetween, and a driving portion 16b for driving the plunger 16a.
  • the driving portion 16b is controlled to be driven by the driving unit 4.
  • the plunger 16a in a non-operation of the air cylinder 16 stands by in a position in the vicinity of the cam 12.
  • the plunger 16a is operated through the driving operation of the driving portion 16b, it abuts on the cam follower 13 to press the cam follower 13 toward the cam 12 side, thereby moving the cam follower 13. Accordingly, the air cylinder 16 functions as an "actuator".
  • Fig. 3 is an explanatory view showing the cam groove 12c provided in the cam 12.
  • the cam groove 12c is provided with an inlet 12d for causing the cam follower 13 to slide into the cam groove 12c in a boundary position between the outer peripheral surface 12a and the end face 12b in the cam 12.
  • the air cylinder 16 is disposed on the end face 12b side provided with the inlet 12d with respect to the cam 12, and the cam follower 13 is provided between the plunger 16a of the air cylinder 16 and the end face 12b of the cam 12 in a non-cutting operation.
  • an angle of the upper shaft is constant.
  • the sewing machine motor 2 is controlled such that the inlet 12d and the cam follower 13 are coincident with each other.
  • the air cylinder 16 is driven by the control of the driving unit 4 so that the plunger 16a is rapidly moved to be extended toward the cam 12 side.
  • the cam follower 13 is moved toward the inlet 12d side of the cam groove 12c and thus collides with a wall surface 12e of the cam groove 12c.
  • the cam follower 13 rebounds.
  • the plunger 16a of the air cylinder 16 is still set in the extending state. Therefore, the cam follower 13 collides against the tip of the plunger 16a and is thus returned from the inlet 12d to an inside of the cam groove 12c again.
  • the cam follower 13 even if the cam follower 13 further rebounds, it is returned to the cam groove 12c through the plunger 16a again.
  • the rebounding motion of the cam follower 13 gradually converges.
  • the sewing machine motor 2 is stopped by the control of the driving unit while the rebounding motion of the cam follower 13 converges. Consequently, the inlet 12d of the cam groove 12c is maintained in an opposed position to the plunger 16. Therefore, it is possible to reliably carry out the convergence of the rebounding motion of the cam follower 13.
  • the lower shaft 11 restarts the rotation at a low rotating speed (e.g., 170 rpm) through the driving unit 4. Consequently, the cam 12 is rotated so that a rotating angle position of the cam groove 12c with respect to the cam follower 13 is changed. As shown in Fig. 4B , therefore, the cam follower 13 is led to the inside of the cam groove 12c through an edge 12f provided in a terminal portion of the inlet 12d of the cam groove 12c and is thus moved in conformity to a shape of the cam groove 12c.
  • the moving knife 14 connected to the cam follower 13 through the coupling link 15 is rotated with the movement of the cam follower 13 to catch the needle and bobbin threads and to slide together with the fixed knife, thereby carrying out the thread cutting operation.
  • the plunger 16a of the air cylinder 16 is controlled by the driving unit 4 to continuously maintain an extending position (a position shown in Fig. 4A ) until the cam follower 13 is introduced into the cam groove 12c through the edge 12f.
  • the plunger 16a of the air cylinder 16 elastically presses the cam follower 13 toward the cam 12 side by an air pressure.
  • the air cylinder 16 is operated so that the plunger 16a is moved in a contraction so as to be pulled into the driving portion 16b.
  • the driving unit 4 is electrically connected to a thread cutting switch (not shown) provided in a predetermined position of the sewing machine 1. For example, in a state in which a sewing work is ended to stop the sewing machine motor 2 in a predetermined upper needle position, when the thread cutting switch is operated by an operator (Step S1 : YES), the driving unit 4 controls the driving operation of each portion in the thread cut actuating device 10, thereby cutting a thread.
  • a thread cutting switch not shown
  • the driving unit 4 first drives the sewing machine motor 2 (Step S2) to rotate the lower shaft 11, thereby rotating the cam 12. At this time, the driving unit 4 detects the rotating angle position of the cam 12, that is, the rotating angle position of the cam groove 12c through an output of the encoder 3. When the cam 12 is rotated until the inlet 12d of the cam groove 12c is positioned in the side portion of the cam follower 13 (the state shown in Fig. 4A ) (Step S3 : YES), the driving unit 4 stops the sewing machine motor 2 (Step S4).
  • the driving unit 4 operates the air cylinder 16 and controls the plunger 16a to be extended toward the cam 12 side (Step S5). As described above, consequently, the cam follower 13 is pushed and moved to the inlet 12d side of the cam groove 12c. Then, the driving unit 4 drives the sewing machine motor 2 at a low speed after maintaining a predetermined time stopping state and carries out a control for rotating the lower shaft 11 and the cam 12 at a low rotating speed (e.g., 170 rpm) (Step S6).
  • a low rotating speed e.g. 170 rpm
  • a stopping time required for a stroke from the stoppage of the sewing machine motor 2 to a low rotation should be short (e.g., about 100 ms).
  • Step S7 When the cam 12 is rotated until the cam follower 13 is introduced into the cam groove 12c through the edge 12f (the state shown in Fig. 4B ) (Step S7 ; YES), thereafter, the driving unit 4 controls the air cylinder 16 such that the plunger 16a is moved to be contracted toward the driving portion 16b side (Step S8).
  • the driving unit 4 drives the sewing machine motor 2 at a normal cut driving speed (Step S9) and rotates the lower shaft 11 and the cam 12 in the rotating angle position in which the cam groove 12c of the cam 12 is engaged with the cam follower 13 (Step S10 : YES).
  • Step S9 the driving unit 4 drives the sewing machine motor 2 at a normal cut driving speed
  • Step S10 the driving unit 4 drives the sewing machine motor 2 at a normal cut driving speed
  • Step S10 YES
  • the driving unit 4 stops the sewing machine motor 2 (Step S11). The processing of the driving unit 4 is ended.
  • the driving unit 4 controls the sewing machine motor 2 to temporarily stand by. Also in the case in which the cam follower 13 bounds by a reaction to a collision with the wall surface 12e of the cam groove 12c, consequently, the sewing machine motor 2 is controlled to temporarily stand by. Therefore, the cam 12 is rotated with the cam follower 13 jumping out of the cam groove 12c. Thus, it is possible to reduce a possibility that the cam follower 13 might not be introduced into the cam groove 12c. In other words, the rotation of the cam 12 is temporarily stopped through the temporary standby of the sewing machine motor 2.
  • the plunger 16a of the air cylinder 16 is placed in the extending position (the position shown in Fig. 4A ) until the cam follower 13 is introduced into the cam groove 12c through the edge 12f. Also in the case in which the cam follower 13 is moved to get out of the cam groove 12c through the reaction to the collision with the wall surface 12e of the cam groove 12c, therefore, the cam follower 13 collides against the plunger 16a and is thus braked to be positioned on the inside of the inlet 12d of the cam groove 12c. Accordingly, it is possible to provide the sewing machine 1 including the thread cut actuating device 10 for carrying out the operation still more reliably so that the reliability and durability of the sewing machine 1 can be enhanced further greatly.
  • the cam follower 13 enters the inlet 12d through the driving operation of the air cylinder 16 and the sewing machine motor 2 is then driven again. Consequently, it is not necessary to strictly control a driving timing of the air cylinder 16 with respect to such a timing as to obtain the rotating angle of the cam 12, that is, the angle at which the cam follower 13 can enter the inlet 12d of the cam groove 12c. Thus, it is possible to considerably relieve an operation failure due to a shift of the timing. In other words, the cam follower 13 to be moved through the driving operation of the air cylinder 16 can enter the inlet 12d of the cam groove 12c more reliably. Accordingly, it is possible to provide the sewing machine 1 having the thread cut actuating device 10 for carrying out the operation more reliably so that the reliability of the sewing machine 1 can be enhanced more considerably.
  • the time required for the stroke from the stoppage of the sewing machine motor 2 to the low rotation is short (e.g., about 100 ms). Therefore, the operator rarely feels that the thread cutting operation of the thread cut actuating device 10 is slow due to the stoppage. Accordingly, it is possible to provide the sewing machine 1 including the thread cut actuating device 10 which can carry out the operation more reliably without damaging a comfort obtained by an automatic thread cutting operation. Thus, the reliability of the sewing machine 1 can be enhanced more greatly.
  • the driving operation of the sewing machine motor 2 is started at a low rotating speed (e.g., 170 rpm). Even if the standby time of the sewing machine motor 2 is insufficient for the time required for the convergence of the bound of the cam follower 13, consequently, the sewing machine motor 2 is driven with the low rotation after the standby time. Consequently, it is possible to ensure the time required for the convergence of the bound of the cam follower 13.
  • the sewing machine 1 has the shuttle mechanism in the embodiment, it is also possible to employ a sewing machine which does not have the shuttle mechanism, for example, a sewing machine for forming a seam by means of a looper.
  • the invention may be executed in a thread cut actuating device for cutting the thread by means of only the moving knife.
  • an instruction for cutting a thread through the thread cutting switch may be a thread cutting instruction input from a touch panel display or a thread cutting command incorporated into a sewing program of a sewing machine for carrying out a sewing work by using sewing data.
  • the low rotating speed e.g., 170 rpm
  • the time e.g., about 100 ms
  • the air cylinder 16 is used as the actuator in the embodiment, moreover, it is also possible to employ other configurations (e.g., a solenoid) in so far as the same function can be implemented.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
EP08157444A 2007-06-04 2008-06-02 Dispositif d'actionnement de coupure de fil d'une machine à coudre Withdrawn EP2000570A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007148230A JP2008295946A (ja) 2007-06-04 2007-06-04 ミシン

Publications (1)

Publication Number Publication Date
EP2000570A1 true EP2000570A1 (fr) 2008-12-10

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ID=39760703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157444A Withdrawn EP2000570A1 (fr) 2007-06-04 2008-06-02 Dispositif d'actionnement de coupure de fil d'une machine à coudre

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Country Link
EP (1) EP2000570A1 (fr)
JP (1) JP2008295946A (fr)
KR (1) KR20080106850A (fr)
CN (1) CN101319439A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20090604A1 (it) * 2009-08-03 2009-11-02 P A M I Produzione Automazione Mac Chine Ind Dispositivo di controllo del taglio del filo applicato ad una macchina da cucire
EP2312033A3 (fr) * 2009-10-13 2015-05-06 JUKI Corporation Machine à coudre
CN105926193A (zh) * 2016-06-30 2016-09-07 拓卡奔马机电科技有限公司 一种缝纫机的剪线机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5555470B2 (ja) * 2009-10-13 2014-07-23 Ｊｕｋｉ株式会社 ミシン
CN104358042B (zh) * 2014-12-12 2016-08-24 浙江中捷缝纫科技有限公司 一种花样缝纫机的剪线机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624735A (en) * 1969-08-16 1971-11-30 Pfaff Ag G M Thread-cutting device for lock stitch sewing machines
JPH04303497A (ja) 1991-03-29 1992-10-27 Juki Corp ミシンの糸切り装置
US5372079A (en) 1993-08-11 1994-12-13 The Singer Company N.V. Thread trimming device for a sewing machine
JPH07666A (ja) * 1993-06-14 1995-01-06 Brother Ind Ltd ミシンの糸切り刃駆動カムの制御装置
US5967069A (en) 1997-09-08 1999-10-19 Rodriguez; Felipe Sewing machine cutting system having microprocessor controlled cutting blade
JP2000317178A (ja) * 1999-05-07 2000-11-21 Juki Corp 糸切り駆動装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198386A (ja) * 1982-05-17 1983-11-18 三菱電機株式会社 ミシンの糸切り装置
JPH08141265A (ja) * 1994-11-25 1996-06-04 Brother Ind Ltd ミシンの操作装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624735A (en) * 1969-08-16 1971-11-30 Pfaff Ag G M Thread-cutting device for lock stitch sewing machines
JPH04303497A (ja) 1991-03-29 1992-10-27 Juki Corp ミシンの糸切り装置
JPH07666A (ja) * 1993-06-14 1995-01-06 Brother Ind Ltd ミシンの糸切り刃駆動カムの制御装置
US5372079A (en) 1993-08-11 1994-12-13 The Singer Company N.V. Thread trimming device for a sewing machine
US5967069A (en) 1997-09-08 1999-10-19 Rodriguez; Felipe Sewing machine cutting system having microprocessor controlled cutting blade
JP2000317178A (ja) * 1999-05-07 2000-11-21 Juki Corp 糸切り駆動装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20090604A1 (it) * 2009-08-03 2009-11-02 P A M I Produzione Automazione Mac Chine Ind Dispositivo di controllo del taglio del filo applicato ad una macchina da cucire
EP2312033A3 (fr) * 2009-10-13 2015-05-06 JUKI Corporation Machine à coudre
EP3006615A1 (fr) * 2009-10-13 2016-04-13 JUKI Corporation Machine a coudre
CN105926193A (zh) * 2016-06-30 2016-09-07 拓卡奔马机电科技有限公司 一种缝纫机的剪线机构

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KR20080106850A (ko) 2008-12-09
CN101319439A (zh) 2008-12-10
JP2008295946A (ja) 2008-12-11

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