CN1891887A - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
CN1891887A
CN1891887A CNA200610094261XA CN200610094261A CN1891887A CN 1891887 A CN1891887 A CN 1891887A CN A200610094261X A CNA200610094261X A CN A200610094261XA CN 200610094261 A CN200610094261 A CN 200610094261A CN 1891887 A CN1891887 A CN 1891887A
Authority
CN
China
Prior art keywords
sewing machines
position sensor
control system
fabric
housing
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.)
Pending
Application number
CNA200610094261XA
Other languages
Chinese (zh)
Inventor
C·黑克纳
H·塞贝特
S·勒米奇
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler AG
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 Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of CN1891887A publication Critical patent/CN1891887A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • D05B29/00—Pressers; Presser feet
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
    • D05B27/04—Work-feeding means with feed dogs having horizontal and vertical movements arranged above the workpieces

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
  • Inorganic Insulating Materials (AREA)
  • Massaging Devices (AREA)

Abstract

The invention provided a sewing machine, improved to automatically switch the sewing machine to the thickness of cloth. This sewing machine includes: a housing having a base plate; a top arm; and a strut for integrating the base plate with the top arm. A metallic presser presses a cloth piece near a stitch forming position. The metallic presser driven by a movable rod is capable of moving between the lift position for releasing the cloth piece and the pressing position for the cloth piece to be pressed. When the metallic presser moves between these positions, the distance of at least one movable rod part from a reference structure fixed to the housing stably changes. The position sensor detects the position of the metallic presser in the pressing position. A control system makes signal connection thereto. The system sets an adjustment variable for the sewing machine depending upon the output value of the position sensor. As a result, the obtained sewing machine automatically performs switching to the thickness of variable cloth piece.

Description

Sewing machines
Technical field
The present invention relates to a kind of Sewing machines, this Sewing machines comprises: a housing; One substrate; One top arm; One connects the column of substrate and top arm; Be used for pushing down at least one lower platen of fabric, this lower platen can be by a motion bar assembly at the state of raising that unclamps fabric with push down between the pressed status of fabric and move; Described motion bar assembly has at least one motion bar part, and this motion bar part and the distance that is fixed between the reference structure of housing change continuously raising between state and the pressed status.
Background technology
The Sewing machines of known a kind of general type from DE 3043141 A1 for example.In case will utilize the fabric thickness of this class stitching sewing machine to have some to change, just must manually readjust the program of Sewing machines or modification Sewing machines, this operation is very time-consuming.
Summary of the invention
An object of the present invention is to improve the Sewing machines of the described type of beginning, make Sewing machines automatically regulate according to the fabric thickness that changes.
According to the present invention, this purpose is used for the position sensor that the lower platen position of pressed status is detected is realized by one, this position sensor comprises the control system that is connected with this position sensor signal, and this control system preestablishes the regulated variable of Sewing machines according to the output valve of position sensor.
The present invention is derived from such discovery, that is, and and the thickness of the fabric of compression during the decisive parameter relevant with sewing thickness is to make.Based on the position of the bar assembly of representing the lower platen state, the pressed status of utilizing position sensor to detect lower platen is measured the fabric thickness of this compression.This lower platen can be near the feeding pin of pushing down the presser feet of fabric or fabric is remained on depressed position when fabric is sent into stitching forming the position.Near the fabric thickness of detected compression automatically stitching forms the position like this can be converted to given regulated variable according to the fabric thickness of this compression by control system.Sewing machines automatically adapts to the fabric thickness of detected compression.Without any need for manual adjustments or manual program transformation.This has reduced the setting-up time when changing sewing.In addition, avoided wrong adjusting.By means of the regulated variable that control system provides, feeding fabric, and lower platen safely-be presser feet and/or feeding pin-the be applied to pressure minimum on the fabric.
Being used to measure the motion bar components is beneficial to the position sensor of the distance of the reference structure that is fixed in housing and easily carries out range measurement.Perhaps, position sensor can determine partly the motion bar assembly certain member the position and need not to measure relative distance.
The position sensor of Hall element and capacitive proximity sensors (approximation sensor) form has outstanding performance aspect range measurement.
Can with one be arranged on Sewing machines be connected the member of (pushing connection) with lower platen thrust and be fixed in the position sensor of the piezoelectric element form between the member on the housing integrally formed with the bar assembly well.The setting of this position sensor is based on such consideration, that is, in known Sewing machines, the pressure that thrust part is applied on the housing parts depends on the height of lower platen in pressed status, promptly depends on the fabric thickness of compression.
Can be with optical pickocff as range sensor or determine the sensor of the absolute position of parts, for example grating or light curtain partly.
By means of the speed of the arm axle of making parts and feed pieces that will be used for activating respectively Sewing machines as the predefined control system of regulated variable, the fabric thickness that the sewing speed of Sewing machines can be adapted to compress.Can make sewing speed approach the maximum sewing speed possible, so that reduce total making the time to a certain fabric thickness.
The material thickness increase make thread tension can be adapted to each sewing thickness best as the predefined control system of regulated variable the tension force predetermined value of line tension regulator, even also can guarantee to form suitable stitching like this.
The state of raising of lower platen is guaranteed safe charging and made charging hoisting depth minimum simultaneously as the predefined control system of regulated variable.Can always guarantee required hoisting depth minimum like this, thereby save the Sewing machines operational example, and make it possible to easily place sewing as herein lifting cylinder exhaust and time of air inlet (deventilation).
Make stitch length be adapted to fabric thickness best as the predefined control system of regulated variable the feed value of the stitch length adjusting device of Sewing machines feed arrangement.
Description of drawings
From below in conjunction with the explanation of accompanying drawing to exemplary embodiment, details of the present invention will be apparent, wherein:
Fig. 1 is the perspective view of Sewing machines, and the subelement of its middle shell is removed and roughly illustrates control system;
Fig. 2 is the front view of Sewing machines partly cut-away, and wherein protecgulum is removed, and presser feet is in the pressed status that is positioned on the heavy weave of filling in;
Fig. 3 be Sewing machines with the similar view of Fig. 2, wherein presser feet is in the pressed status that is positioned on the flimsy material of filling in;
Fig. 4 is that its top feed device is in the sketch with the corresponding state of Fig. 2; And
Fig. 5 is that its top feed device of Sewing machines is in the corresponding state of Fig. 3, is similar to the view of Fig. 4.
The specific embodiment
Except control assembly, Fig. 1-3 shows the Sewing machines of taking apart a part 1 truly.Figure 4 and 5 illustrate the sketch of Sewing machines 1, general reference numeral is shown is the connection of the mechanical part of 2 its top feed device.The basic design of Sewing machines 1 is very common, therefore below very important components will only be described for the purpose of the present invention.
Sewing machines 1 has the housing 3 of C shape.This housing 3 comprises substrate 4 and top arm 5.In order to constitute C shape, column 6 is joined together substrate 4 and arm 5.Accommodate the arm axle 7 (referring to Fig. 4) that drives by the motor (not shown) in the arm 5.By with arm axle 7 rotationally mechanical attachment the shank 8 that has sewing needle 9 is moved up and down and makes its top feed device 2 motion.About the actuating of its top feed device 2, the visible kinematic design of this device 2 that is clearly shown that at Figure 4 and 5, arm axle 7 is connected on the eccentric disc 10 un-rotatably.Engaging on the eccentric disc 10 has connecting rod 11, and this connecting rod 11 is hinged to connector 12.Connector 12 pivots around the axis that is parallel to arm axle 7 by the joint hinge 13 that is fixed on the housing.Connector 12 is hinged to another connecting rod 14 by its end away from connecting rod 11.This connecting rod 14 is provided with permanent magnet 15, and this permanent magnet produces the magnetic field that its magnetic line of force is basically perpendicular to substrate 4.
Fig. 4 illustrates its top feed device 2, and this feed arrangement is in the state of pushing down heavy weave sheet 16 to be made-hereinafter will be called first pressed status.In first pressed status, Hall element 17 is pressed close to permanent magnet 15.This sensor 17 is installed on the adjutage 18 that is fixed in housing.This Hall element 17 is connected to central control system 20 via signal line 19.
The end away from connector 12 of the connecting rod 14 that is equipped with permanent magnet 15 by this connecting rod is hinged on the drift angle of a triangle pole 21 (among Fig. 4).(among Fig. 4) is hinged to presser feet 22 in the lower left corner of this triangle pole 21.Presser feet 22 is used for pushing down fabric near stitching formation position.Compression spring 24 self-supportings are between the lower left corner of triangle pole 21 (among Fig. 4) joint and top casing lid 23, and preloading of this spring can utilize load on spring adjustment screw 25 to regulate.This spring-load adjustment screw 25 is driven by motor.This driving mechanism is connected to control system 20 via signal line 26.Regulate hoisting depth by the load on spring adjustment screw 25 that drives regulating element as motor.The lower right corner of triangle pole 21 (among Fig. 4) joint is hinged to the feeding pin 28 that is used to wait to make fabric via connecting rod 27.
Its top feed device 2 is to be used for the motion bar assembly that the actuating of presser feet 22 and feeding pin 28 is moved.When operation, presser feet 22 and feeding pin 28 alternately rise to the state of raising from pressed status, thereby unclamp fabric so that from its top feed.In Sewing machines 1, the elevated position of presser feet 22 and feeding pin 28 is set by the regulating wheel 29 that a motor drives.Regulating wheel 29 is connected to control system 20 via signal line 30.
In Sewing machines 1, regulate the thread tension of first sewing thread by the regulating element 31 of motor driving.This regulating element is connected to control system 20 via signal line 32.In Sewing machines 1, regulate the thread tension of second sewing thread by the regulating element 33 of motor driving.This regulating element is connected to control system 20 via signal line 34.
In Sewing machines 1, the form that can drive by motor is that the regulating element of stitch length regulating wheel 35 is regulated stitch length.This regulating element is connected to control system 20 via signal line 36.
Control system 20 is connected to motor control system 38 via signal line 37, and this motor control system 38 is in signal connection status (connected mode is not shown) with the CD-ROM drive motor that is used for arm axle 7.
Preestablish the regulated variable of load on spring adjustment screw 25, lifting regulating wheel 29, thread tension regulating element 31 and 33, stitch length regulating wheel 35 and motor control system 38 in the following manner:
During its top feed, presser feet 22 and feeding pin 28 by its top feed device 2 in pressed status with raise between the state alternately motion.In pressed status, the position of presser feet 22 and feeding pin 28 depends on that fabric can compressed thickness.The for example double-deck thicker fabric 16 that is difficult to compress is shown according to Fig. 1,2 and 4 first pressed status.
The thin fabric 39 that comprises for example individual layer that is difficult to compress in second pressed status shown in Fig. 3 and 5.According to the quality of fabric,, has less thickness thereby form the zone at stitching even the fabric of thickness of slab also can be compressed in depressed position.For sewing work, the thickness of fabric when being pushed down by presser feet 22 and feeding pin 28 is very important.
Connecting rod 14 is movable parts of its top feed device 2, and the distance that this connecting rod and adjutage are 18 is being raised moving and change continuously between state and the pressed status with presser feet 22 or feeding pin 28.Even also thicker fabric when being compressed, as in first pressed status, permanent magnet 15 is near Hall element 17.Hall element 17 via signal line 19 to control system 20 send with permanent magnet 15 press close to very much corresponding signal.The preset value of position, thread tension, stitch length and sewing velocity when load on spring, presser feet 22 and the feeding pin 28 of control system 20 calculating compression springs 24 are raised is then perhaps read these data the preset value table in being stored in control system 20.Control system 20 is transferred to these preset values load on spring adjustment screw 25, promotes regulating wheel 29, thread tension regulating element 31, thread tension regulating element 33, stitch length regulating wheel 35 and motor control system 38 via signal line 26,30,32,34,36 and 37 then.
When easily compression or thin fabric itself were in pressed status, permanent magnet 15 will be away from Hall element 17, thereby caused the less corresponding sensor signal of fabric thickness with compression.
The sewing that is compressed is thick more, permanent magnet 15 is the closer to Hall element 17, and then the thread tension of for example regulating by thread tension regulating element 31,33 is just big more.
The fabric that Hall element 17 records is thick more, and the default presser feet 22 and the elevated position of feeding pin 28 are just high more, thereby guarantee the 2 safe chargings of its top feed device.
The compression fabric thickness that records is big more, and is just low more by the speed of the default arm axle 7 of motor control system 38, thereby guarantees safe charging and make reliably.
The compression fabric is thick more, and the loss of stitch length is just big more during sewing.Correspondingly, compressing under the thick situation of fabric, increasing stitch length by default corresponding value on stitching length adjustment wheel.
In addition, can make hoisting depth be adapted to determined fabric thickness.The hoisting depth of presser feet 22 and feeding pin 28 can be chosen as and fill in and to take out fabric just easily.Therefore, can select required minimum lift height, so that saving is as the lifting cylinder exhaust of the parts of its top feed device 2 and the time of air inlet.In addition, can easily place fabric.
Hall element 17 that produces because of the variable in distance between adjutage 18 and the connecting rod 14 and the distance between the permanent magnet 15 are along with the operation cyclically-varying of its top feed device 2.As long as presser feet 22 is in pressed status with feeding pin 28, the distance between Hall element 17 and the permanent magnet just reaches extreme value.This extreme value can be by control system 20 by determining the corresponding instantaneous detection of Hall element 17 output valves.This extreme value is significantly corresponding to the pressed status of presser feet 22 and feeding pin 28.This extreme value constitutes by the dimensional drawing of the thickness of the fabric 16 of presser feet 22 and 28 compressions of feeding pin or 39.
Perhaps, the position sensor that is formed with permanent magnet 15 by Hall element 17 in according to the embodiment of Fig. 1-5 also can be the sensor of other type.Position sensor for example can be a capacitive proximity sensors, and wherein adjutage 18 and connecting rod 14 constitute the parts of capacitor, and sensor is measured the capacitance of this capacitor.Position sensor can also be arranged on the member that is connected with presser feet 22 thrusts as compression spring 24 be fixed in member on Sewing machines 1 housing such as the piezoelectric element between the case lid 23.This piezoelectric element is measured compression spring 24 and is applied to pressure on presser feet 22 or the feeding pin 28 in pressed status.This pressure depends on the degree that fabric promoted of the respective thickness below pressed status presser feet 22 or feeding pin 28 are placed in.In another embodiment, position sensor can also be an optical pickocff, for example light curtain/grating.
Regulated variable carries out the compression fabric thickness that the adaptation of the fabric thickness that recorded by Hall element 17 can be especially changes during not having under the situation about postponing at sewing work continuously.
The presser feet 22 that fabric is pushed down in top combination has illustrated the position probing of the thickness measure that is used to compress fabric.Also can carry out this measurement by means of being in the feeding pin 28 that presses down the fabric position.
Though used motor drive in the above mentioned Sewing machines member, this drive unit also can be air impeller, hydraulic unit driver or stepper motor driver.

Claims (10)

1. a Sewing machines (1) comprises
-housing (3);
-substrate (4);
-top arm (5);
-connect the column (6) of described substrate (4) and top arm (5);
-being used to push down at least one lower platen (22,28) of fabric (16,39), this lower platen (22,28) can move between the two states below by motion bar assembly (2):
--unclamp the state of raising of fabric (16,39),
--push down the pressed status of fabric (16,39);
-wherein motion bar assembly (2) has at least one motion bar part (14), and this motion bar part and the distance that is fixed between the reference structure (18) on the housing (3) change continuously raising between state and the pressed status;
It is characterized in that, comprise
-be used to detect the position sensor (17) of lower platen (22, the 28) position that is in pressed status, comprise
-being connected the control system (20,38) of (19) with described position sensor (17) signal, this control system (20,38) is according to the regulated variable of the default Sewing machines (1) of output valve of described position sensor (17).
2. Sewing machines according to claim 1 is characterized in that, described position sensor (17) is used to measure motion bar components (14) and is fixed on distance between the reference structure (18) on the housing (3).
3. Sewing machines according to claim 2 is characterized in that, described position sensor is Hall element (17).
4. Sewing machines according to claim 2 is characterized in that, described position sensor is a capacitive proximity sensors.
5. Sewing machines according to claim 1 is characterized in that, described position sensor is arranged on the member (24) that is connected with presser feet (22) thrust of Sewing machines (1) and is fixed in piezoelectric element between the member (23) on the housing (3).
6. Sewing machines according to claim 1 and 2 is characterized in that, described position sensor is an optical pickocff.
7. according to each described Sewing machines in the claim 1 to 6, it is characterized in that described control system (20,38) is designed to make parts (8 with what be used for activating respectively Sewing machines (1), 9) and the speed of the arm axle (7) of feeding part (22,28) preestablish as regulated variable.
8. according to each described Sewing machines in the claim 1 to 7, it is characterized in that described control system (20,38) is designed to the tension force predetermined value of line tension regulator (31,33) is preestablished as regulated variable.
9. according to each described Sewing machines in the claim 1 to 8, it is characterized in that described control system (20,38) is designed to the elevated position of lower platen (22) is preestablished as regulated variable.
10. according to each described Sewing machines in the claim 1 to 9, it is characterized in that described control system (20,38) is designed to the single feed value of the stitch length adjusting device (35) of the pay-off of Sewing machines (1) is preestablished as regulated variable.
CNA200610094261XA 2005-06-28 2006-06-28 Sewing machine Pending CN1891887A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029955A DE102005029955A1 (en) 2005-06-28 2005-06-28 sewing machine
DE102005029955.5 2005-06-28

Publications (1)

Publication Number Publication Date
CN1891887A true CN1891887A (en) 2007-01-10

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EP (1) EP1739221B1 (en)
JP (1) JP2007007391A (en)
KR (1) KR20070000990A (en)
CN (1) CN1891887A (en)
AT (1) ATE392502T1 (en)
DE (2) DE102005029955A1 (en)
SI (1) SI1739221T1 (en)

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CN102587049A (en) * 2011-01-14 2012-07-18 上海日野工业缝纫机有限公司 Automatic line-tightening mechanism capable of sensing thickness of fabric
CN102653902A (en) * 2011-02-28 2012-09-05 兄弟工业株式会社 Sewing machine
CN101403167B (en) * 2007-10-05 2013-05-01 Juki株式会社 Cloth feeding device of sewing machine
CN101368319B (en) * 2007-08-17 2013-06-05 杜尔克普-阿德勒股份公司 Feeder for feeding sewing material while operating a sewing machine and related sewing machine
CN103696166A (en) * 2012-09-27 2014-04-02 兄弟工业株式会社 Sewing machine
CN104532487A (en) * 2014-10-20 2015-04-22 上海鲍麦克斯电子科技有限公司 Pressing driving control structure of industrial sewing machine
CN104652045A (en) * 2015-02-09 2015-05-27 浙江乐江机械有限公司 Sewing machine
CN105463716A (en) * 2014-09-26 2016-04-06 兄弟工业株式会社 Sewing machine and control method thereof
CN105862265A (en) * 2016-05-27 2016-08-17 浙江众邦机电科技有限公司 Cloth thickness detection device of sewing machine
CN105970509A (en) * 2016-06-14 2016-09-28 浙江众邦机电科技有限公司 Cloth thickness sensing detection device of sewing machine
CN106087274A (en) * 2015-04-30 2016-11-09 杜克普爱华股份公司 Stitch length adjusting apparatus and the sewing machine with this stitch length adjusting apparatus for sewing machine
TWI595134B (en) * 2012-05-02 2017-08-11 米納瓦伯斯克瓦斯公司 Sewing machine
CN108442044A (en) * 2018-04-25 2018-08-24 标准缝纫机菀坪机械有限公司 A kind of sewing machine sewing crosses a ridge auto-induction apparatus and applies its sewing machine
CN109322068A (en) * 2018-11-27 2019-02-12 杰克缝纫机股份有限公司 A kind of sewing-machine foot mechanism and sewing machine
CN109706649A (en) * 2019-03-13 2019-05-03 杰克缝纫机股份有限公司 Sewing machine control method and sewing-machine control systems
CN109989186A (en) * 2019-04-23 2019-07-09 杰克缝纫机股份有限公司 Compound adjusting method
CN110306295A (en) * 2018-03-20 2019-10-08 兄弟工业株式会社 Sewing machine
CN110761006A (en) * 2018-07-26 2020-02-07 杰克缝纫机股份有限公司 Sewing machine peduncle-passing speed reducing device and control method
CN111118762A (en) * 2020-02-24 2020-05-08 浙江众邦机电科技有限公司 Sewing machine and thin and thick material detection device thereof
CN115247320A (en) * 2021-04-28 2022-10-28 杰克科技股份有限公司 Adjustment mechanism and sewing machine

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DE102005049771A1 (en) * 2005-10-18 2007-04-19 Dürkopp Adler AG Sewing machine comprises a presser foot position sensor, a material thickness sensor and a control unit for controlling the sewing machine in response to signals from the sensors
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DE102008053750A1 (en) * 2008-10-29 2010-05-06 Dürkopp Adler AG sewing machine
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CN101368319B (en) * 2007-08-17 2013-06-05 杜尔克普-阿德勒股份公司 Feeder for feeding sewing material while operating a sewing machine and related sewing machine
CN101403167B (en) * 2007-10-05 2013-05-01 Juki株式会社 Cloth feeding device of sewing machine
CN102587049A (en) * 2011-01-14 2012-07-18 上海日野工业缝纫机有限公司 Automatic line-tightening mechanism capable of sensing thickness of fabric
CN102587049B (en) * 2011-01-14 2015-09-02 上海日野工业缝纫机有限公司 The automatic thread tensioning mechanism of sewing thickness can be experienced
CN102653902A (en) * 2011-02-28 2012-09-05 兄弟工业株式会社 Sewing machine
TWI595134B (en) * 2012-05-02 2017-08-11 米納瓦伯斯克瓦斯公司 Sewing machine
CN103696166B (en) * 2012-09-27 2015-11-18 兄弟工业株式会社 Sewing machines
CN103696166A (en) * 2012-09-27 2014-04-02 兄弟工业株式会社 Sewing machine
CN105463716A (en) * 2014-09-26 2016-04-06 兄弟工业株式会社 Sewing machine and control method thereof
CN105463716B (en) * 2014-09-26 2018-03-20 兄弟工业株式会社 The control method of sewing machine and sewing machine
CN104532487A (en) * 2014-10-20 2015-04-22 上海鲍麦克斯电子科技有限公司 Pressing driving control structure of industrial sewing machine
CN104652045A (en) * 2015-02-09 2015-05-27 浙江乐江机械有限公司 Sewing machine
CN106087274B (en) * 2015-04-30 2019-06-07 杜克普爱华股份公司 Stitch length for sewing machine adjusts device and the sewing machine with this stitch length adjustment device
CN106087274A (en) * 2015-04-30 2016-11-09 杜克普爱华股份公司 Stitch length adjusting apparatus and the sewing machine with this stitch length adjusting apparatus for sewing machine
CN105862265A (en) * 2016-05-27 2016-08-17 浙江众邦机电科技有限公司 Cloth thickness detection device of sewing machine
CN105970509B (en) * 2016-06-14 2019-02-12 浙江众邦机电科技有限公司 A kind of sewing machine cloth thickness sense answers detection device
CN109736027A (en) * 2016-06-14 2019-05-10 浙江众邦机电科技有限公司 Sewing machine cloth thickness sense answers detection device
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CN110306295A (en) * 2018-03-20 2019-10-08 兄弟工业株式会社 Sewing machine
CN108442044B (en) * 2018-04-25 2024-03-01 标准缝纫机菀坪机械有限公司 Sewing machine material passes bank auto-induction device and uses its sewing machine
CN108442044A (en) * 2018-04-25 2018-08-24 标准缝纫机菀坪机械有限公司 A kind of sewing machine sewing crosses a ridge auto-induction apparatus and applies its sewing machine
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CN109322068B (en) * 2018-11-27 2021-04-27 杰克缝纫机股份有限公司 Sewing machine presser foot mechanism and sewing machine
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DE102005029955A1 (en) 2007-01-04
ATE392502T1 (en) 2008-05-15
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KR20070000990A (en) 2007-01-03
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