EP2105526B1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

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Publication number
EP2105526B1
EP2105526B1 EP09003246A EP09003246A EP2105526B1 EP 2105526 B1 EP2105526 B1 EP 2105526B1 EP 09003246 A EP09003246 A EP 09003246A EP 09003246 A EP09003246 A EP 09003246A EP 2105526 B1 EP2105526 B1 EP 2105526B1
Authority
EP
European Patent Office
Prior art keywords
shaft
lifting height
raising
sewing machine
motor shaft
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.)
Active
Application number
EP09003246A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2105526A1 (de
Inventor
Sven Pfeiffer
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 EP2105526A1 publication Critical patent/EP2105526A1/de
Application granted granted Critical
Publication of EP2105526B1 publication Critical patent/EP2105526B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • 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
    • D05B19/16—Control of workpiece movement, e.g. modulation of travel of feed dog
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet

Definitions

  • the invention relates to a sewing machine according to the preamble of claim 1.
  • Such a sewing machine is known by public prior use.
  • Other sewing machines are known from the DE 198 20 646 A1 , of the DE 689 09 031 T2 and DE 10 2006 011 495 A1 ,
  • a sewing machine having a presser foot has a fan adjusting lever for releasing the presser foot and a lift height adjusting lever for setting a feed stroke of the presser foot, and the fan adjusting lever and the lift height adjusting lever can be moved by a common drive.
  • the JP 06 238078 A shows a sewing machine with a presser foot, which is driven so that no excessively high pressure from the presser foot is applied to the fabric.
  • FR 2 495 651 is a presser foot in a rest position adjustable by fine thread screws.
  • Object of the present invention is to reduce the effort in the construction of the fan device and the lifting height adjustment.
  • the presser foot can be designed as a hold-down, as it is known for embroidery machines.
  • the presser foot can be configured in two parts with a presser foot and a transport foot.
  • the fan device and / or the lifting height adjustment device are designed so that their respective assigned Adjusting shaft about its rotational position about an adjusting shaft longitudinal axis specifies the desired control value for the fan height and / or the lifting height.
  • This manipulated variable input via the rotational position of the adjusting shaft can be realized for example by an eccentric arrangement of the adjusting.
  • the common drive can be designed as a stepping motor drive.
  • different fan heights and / or different stroke settings for the transport stroke with fine gradation can be specified. This can be used to adapt to the respective sewing environment.
  • a high fan height can be preset.
  • an enlarged transport stroke with fine adjustment of the lifting height can be specified for bridging the sewing material stages.
  • Cams according to claim 3 ensure a cost-effective implementation of the mechanical coupling of the fan device on the one hand and the lifting height adjustment on the other hand to the motor shaft of the drive.
  • the cam discs may have a cam disk section which extends coaxially about a bearing shaft of the cam disk and a cam disk section which runs helically around this bearing shaft and which adjoins the coaxially extending cam disk section. As long as a bearing section to be controlled with the cam abuts the cam disk via the coaxially extending cam section, this remains ineffective.
  • cams and segmented gears can be used, which are rotated to each other mounted on a drive motor shaft, that only one of the gear segments with a portion to be controlled is engaged.
  • the maximum rotation of the drive motor shaft for generating the maximum control on the one hand the fan device and on the other hand the lifting height adjustment be kept low and, for example, less than 360 °.
  • a backlash of components that come together interacting with each other in the common drive, can be ensured by a spring preload.
  • Another variant instead of two cams can be realized by a lever mechanism. This is designed so that a mounted on the motor shaft of the drive motor lever in a first pivoting direction, for example in a clockwise direction, with the fan device for releasing the presser foot and in a second pivoting direction, for example, counterclockwise, with the lifting height adjustment for actuation respectively one of these two institutions cooperates.
  • Another variant instead of the two cams can be realized by two transmission gear, which can be separated from each other by a pneumatically, mechanically or electrically actuated clutch.
  • the transmission gear can be realized as a pair of gears, toothed / V-belt, coupling gear or as a cam gear.
  • a twist angle of the drive motor can also be greater than 360 °. This can be used to provide a larger ratio, so that the torque to be transmitted from the drive motor shaft is reduced.
  • An arrangement according to claim 4 ensures a functional separation of the operation of the fan device on the one hand and the operation of Transporthubver ein the other.
  • the fan device then operates independently of the Hubtownn adjustment, so that these facilities can not interfere with each other.
  • a design and arrangement of the cams according to claim 5 is particularly preferred in relation to a functional separation of the operation of the fan device from the operation of the lifting height adjustment device via the common drive. Starting from a zero position, both functions can be achieved by a rotation of the motor shaft of the stepping motor with an absolutely small angle of rotation.
  • Adjusting shafts according to claims 6 and 7 have proven to be safe and robust adjustment of the fan device on the one hand and the lifting height adjustment on the other hand. Alternatively, variants without such adjustment can be realized.
  • the ventilating device can be designed so that a lever which causes the sewing foot to air is connected directly to a drive shaft of the common drive.
  • Cams according to claim 8 reduce the cost again.
  • a maximum adjustment path according to claim 9 reduces the requirements for the common drive.
  • a bearing according to claim 10 ensures a safe guidance of the motor shaft, so that the requirements for a drive-side mounting of the motor shaft are reduced accordingly.
  • a sewing machine of which in the Fig. 1 a housing 1 is shown, has a stand 2, an arm 3 and a head 4, so that together with a in the Fig. 1 not shown base plate results in a total C-shaped structure of the sewing machine.
  • the needle 7 passes through a stitch hole 8 in a needle plate 9, which forms part of a support plate, not shown, which in turn represents the top of the base plate of the sewing machine.
  • the sewing machine has to hold down and to transport sewing material during sewing a sewing foot 10, which is divided a presser foot 11 and a transport foot 12.
  • the presser foot 11 serves to hold down the material during sewing.
  • the transport foot 12 serves for transporting the material along a sewing direction parallel to the longitudinal extension of the needle plate 9.
  • a generally designated 13 fan device To ventilate the presser foot 10 is a generally designated 13 fan device.
  • This has a fan shaft 14, with the Nähfuß character a first fan shaft rotary lever 15 is rotatably connected.
  • the first fan shaft rotary lever 15 is in turn articulated via a not visible in the drawing in detail connection on the one hand to a Transportfußstange 16 and on the other hand to a presser foot rod 17 of the presser foot 10.
  • a second fan shaft rotary lever 18 At the first fan shaft rotary lever 15 opposite free end of the fan shaft 14, a second fan shaft rotary lever 18 is rotatably disposed.
  • a contact pin 19 of the second fan shaft rotary lever 18 is pressed against a fan shaft cam 20.
  • Fig. 2 shows a neutral position of the fan device 13, in which the fan shaft cam 20 is oriented so that the contact pin 19 occupies a minimum distance from a motor shaft 21 of a stepping motor 22.
  • the fan shaft cam 20 is rotatably connected to the motor shaft 21.
  • a fan shaft control cam wall 23 of the fan shaft cam 20 against which the abutment pin 19 abuts extends helically about a longitudinal axis of the motor shaft 21.
  • a lifting height adjusting cam 24 is non-rotatably arranged with the motor shaft 21 continues.
  • the cams 20, 24 each have one to the motor shaft 21 coaxial cam portion and a thereto subsequent steadily spiraling cam portion on.
  • grub screws or setscrews 25 which are shown in the drawing in an exploded view, there is a rotationally fixed fixing the cams 20, 24 on the motor shaft 21.
  • Corresponding grub screws 25 are used for rotationally mounting the various other wave components in the Fig. 2 to 4 shown assembly.
  • the two cams 20, 24 are identically shaped components.
  • the Hubtownn-Verstell listenings cam 24 is opposite to the fan shaft cam 20 mounted on the motor shaft 21. This opposite orientation is such that the spiral shape of a lift height adjuster cam wall 26 opens opposite to the fan shaft cam wall 23.
  • the two cams 20, 24 are oriented oppositely oriented on the motor shaft 21 plugged that the free ends of the two cams 20, 24 are arranged offset by 180 ° in the circumferential direction about the motor shaft 21 to each other.
  • the Hubtownn-Verstell annoyings rotary lever 28 is rotatably connected to a Hubgetriebewelle 29 of a generally designated 30 Hub Whyn adjustment.
  • the Hubgetriebewelle 29 is connected via a screw jack 31 with a lifting shaft 32 of the lifting height adjustment device 30 in operative connection.
  • the lifting gear 31 influences a lifting height of a transport stroke of the transport foot 12 and the presser foot eleventh
  • the arm shaft 5, the fan shaft 14, the motor shaft 21, the Hubgetriebewelle 29 and the lift shaft 32 are all parallel to each other.
  • the stepper motor 22 has the motor shaft 21 starting from the neutral position Fig. 2 180 ° according to a directional arrow 34 in the Fig. 3 twisted.
  • Fig. 4 shows the assembly in a position "aired presser foot", in which the stepper motor 22, the motor shaft 21, starting from the neutral position to Fig. 2 180 ° corresponding to a directional arrow 36 in the Fig. 4 has twisted.
  • the motor shaft 21 starting from the neutral position, to the position to Fig. 4 So rotated by 180 ° counterclockwise.
  • the contact pin 27 of the lifting height adjustment device 30 runs at this adjustment on the coaxial to the motor shaft portion 37 of the Hubtownn-Verstell respondeds cam 24 so that the contact pin 27 in the position "aired presser foot” after Fig. 4 its position compared to the neutral position after Fig. 2 did not change.
  • In the position "lifted presser foot” after Fig. 4 So it stays with the transport stroke 0.
  • the fan shaft pin 19 there on the fan shaft cam wall 23 where it has the maximum distance from the motor shaft 21.
  • Fig. 5 shows in a diagram once again the rotation angle n MW of the motor shaft 21 dependent conditions in the ventilation and in the Hubtownnver ein.
  • the in the Fig. 5 horizontal axis shows the angle of rotation the motor shaft 21 in degrees, starting from the neutral position at 0 °.
  • n LW of the fan shaft 14 pulled through the dependence of the rotation angle n LW of the fan shaft 14 from the rotation angle of the motor shaft 21 is shown.
  • the fan shaft 14 is not rotated at all, so that the presser foot 10 remains unventilated.
  • the rotational angle of the fan shaft 14 depends linearly on the rotational angle of the motor shaft 21.
  • the fan shaft 14 is pivoted absolutely by about 52 °.
  • a radial bearing 38 (see. Fig. 1 ), which supports the motor shaft 21 relative to the housing 1.
  • the radial bearing 38 is designed as a ball bearing.
  • a bearing shell of the radial bearing 38 is not shown in the drawing.
  • two toothed segments 39, 40 axially spaced apart plugged.
  • the first stepper motor toothed segment 39 meshes with a fan shaft toothed segment 41, which in turn is non-rotatably mounted on the fan shaft 14.
  • the second stepper motor gear segment 40 meshes with a Hubgetriebewellen-toothed segment 42 which is non-rotatably mounted on the Hubgetriebewelle 29.
  • Fig. 6 shows the assembly in a zero position in which the presser foot 10 is not released and the transport stroke of the transport foot 12 is zero. If in the Fig. 6 the motor shaft 21 is rotated counterclockwise (direction arrow 43), the fan device 13 is activated and the presser foot 10 is released. During this rotation, the gear segment pair 40, 42 remains ineffective, so that the lifting height adjustment device 30 is not activated and the transport stroke of the transport foot 12 with the sewing foot 10 lifted
  • the toothed segment 39 has a peripheral section equipped with teeth, which covers approximately 1 ⁇ 4 of the entire circumference around the motor shaft 21, ie 90 °.
  • toothed segment 40 the teeth extend over a comparable peripheral portion of 90 °.
  • the teeth extend over a peripheral portion of about 60 °.
  • the motor shaft 21 is connected to the fan shaft 14 on the one hand and with the Hubgetriebewelle 29 on the other hand via a lever mechanism.
  • the motor shaft 21 carries axially spaced two levers 45, 46.
  • the levers 45, 46 are non-rotatably mounted on the motor shaft 21.
  • About a contact pin 47 of the stepper motor lever 45 cooperates with a fan shaft lever 48 which is rotatably mounted on the fan shaft 14.
  • About a contact pin 49 of the further stepper motor lever 46 cooperates with a Hubgetriebewellen lever 50. The latter is in turn rotationally fixed to the Hubgetriebewelle 29 plugged.
  • levers 48, 50 in the operation of the stepping motor 22 with the contact pins 47, 49 are disengaged, these levers 48, 50 remain in a neutral position, being secured by a stop, not shown, and a biasing spring, not shown.
  • the contact pins 47, 49 may be made of a damping material, so that the noise in the operation of the lever mechanism after Fig. 7 is minimized.
  • the drive ratio of the motor shaft 21 on the fan shaft 14 on the one hand and on the Hubgetriebewelle 29 on the other hand can be specified.
  • Fig. 8 there is a drive connection of the motor shaft 21 with the fan shaft 14 on the one hand and with the Hubgetriebewelle 29 on the other hand via couplings.
  • the stepper motor shaft 21 contributes to the embodiment Fig. 8 Two axially spaced and slipped onto the motor shaft 21 clutches 51, 52. With the clutches 51, 52 respectively connected to motor shaft gears 53, 54. About an endless drive belt 55 is the first motor shaft gear 53 as a driven gear with a Fan shaft gear 56 in drive connection. The fan shaft gear 56 is rotatably mounted on the fan shaft 14. With the second motor shaft gear 54 as output gear is about a further endless drive belt 57, a Hubgetriebewellen gear 58 in drive connection, which is non-rotatably mounted on the Hubgetriebewelle 29.
  • the two clutches 51, 52 provided a drive connection between the motor shaft 21 and the driven gears 53, 54 only in each case in one direction of rotation of the motor shaft 21. In the respective opposite direction, a freewheel of the clutches 51, 52 ensures that there is no operative connection between the motor shaft 21 and the driven gears 53, 54.
  • the clutch 51 provides a frictional connection between the motor shaft 21 and the output gear 53 when the motor shaft 21 is rotated in the counterclockwise direction (direction arrow 43). In this case, drives the motor shaft 21, the fan shaft 14, but not the HubgeInstitutewelle 29 at.
  • the clutch 52 then establishes a frictional connection between the motor shaft 21 and the output gear 54 when the motor shaft 21 is rotated in the counterclockwise direction (directional arrow 44). In this case, the motor shaft 21 drives the Hubgetechnischewelle 29, but not the fan shaft 14 at.
  • gears 53, 54, 56, 58 Shown are the gears 53, 54, 56, 58, each with the same number of teeth and the same diameter.
  • gears 53, 54, 56, 58 By means of a variation of the numbers of teeth and the diameter of the gears, it is possible to adapt a ratio of the drive on the one hand to the fan device 13 and on the other hand to the height adjustment device 30 to default values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09003246A 2008-03-29 2009-03-06 Nähmaschine Active EP2105526B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008016353A DE102008016353A1 (de) 2008-03-29 2008-03-29 Nähmaschine

Publications (2)

Publication Number Publication Date
EP2105526A1 EP2105526A1 (de) 2009-09-30
EP2105526B1 true EP2105526B1 (de) 2011-07-13

Family

ID=40872764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09003246A Active EP2105526B1 (de) 2008-03-29 2009-03-06 Nähmaschine

Country Status (5)

Country Link
EP (1) EP2105526B1 (ko)
JP (2) JP5530646B2 (ko)
KR (1) KR101534862B1 (ko)
CN (1) CN101545179B (ko)
DE (1) DE102008016353A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975169A1 (de) 2014-07-16 2016-01-20 Dürkopp Adler AG Nähmaschine
DE202015104412U1 (de) 2015-08-20 2016-11-22 Dürkopp Adler AG Nähmaschine sowie Nähmaschinen-Baugruppe

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619036B (zh) * 2011-01-26 2014-06-18 曾贤长 缝纫机马达驱动的机构行程始末调整定位结构
DE102011002271B3 (de) * 2011-04-26 2012-10-31 Hsien Chang Tseng Nähmaschinen-Stellanordnung für den Anfangs- und Endpunkt des Motorantriebsverfahrwegs
DE102014223720B3 (de) * 2014-11-20 2016-02-25 Dürkopp Adler AG Antriebsbaugruppe für eine Nähmaschine sowie Nähmaschine mit einer derartigen Antriebsbaugruppe
JP6603525B2 (ja) * 2015-09-18 2019-11-06 Ｊｕｋｉ株式会社 ミシン
CN106592117B (zh) * 2017-01-13 2023-06-30 湖南兴德缝制股份有限公司 一种缝纫机压脚自动跳跃式提升机构及其缝纫机
CN108411504B (zh) * 2017-02-10 2022-01-07 Juki株式会社 缝纫机
DE102018206088A1 (de) * 2018-04-20 2019-10-24 Dürkopp Adler AG Nähmaschine
CN111074443A (zh) * 2018-10-19 2020-04-28 李纯洁 一种用于缝纫机的电机
CN111501213B (zh) * 2019-01-31 2021-06-04 杰克缝纫机股份有限公司 缝纫机剪线抬压脚调针距的方法
JP7339841B2 (ja) * 2019-10-09 2023-09-06 株式会社ジャノメ ミシン
JP7339840B2 (ja) * 2019-10-09 2023-09-06 株式会社ジャノメ ミシン

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495651A1 (fr) * 1980-12-10 1982-06-11 Mesnil Saint Pere Sarl Broderi Tete de piquage comportant deux pieds presseurs independants, notamment pour la realisation de points bouclette, et machine a piquer ou a broder equipee de cette tete de piquage
JPH0532062Y2 (ko) * 1988-06-07 1993-08-17
CH677508A5 (ko) * 1988-11-30 1991-05-31 Mefina Sa
DE4216054C2 (de) * 1992-05-15 1994-07-07 Pfaff Ag G M Nähmaschine mit einer Stoffdrückereinrichtung
JPH06238078A (ja) * 1993-02-22 1994-08-30 Brother Ind Ltd ミシン
JPH07231991A (ja) * 1994-02-22 1995-09-05 Tokai Ind Sewing Mach Co Ltd ミシンの布押え装置
DE19521115A1 (de) * 1995-06-09 1996-12-12 Altenburger Ind Naehmasch Stoffdrückereinrichtung an einer Nähmaschine
JP3682360B2 (ja) * 1997-05-09 2005-08-10 株式会社バルダン ミシンの布押え装置
TW363095B (en) * 1997-05-09 1999-07-01 Barudan Co Ltd Suppresser of sewing machine
DE19728817C1 (de) * 1997-07-05 1998-06-04 Duerkopp Adler Ag Betätigungseinrichtung für den Stoffdrücker einer Nähmaschine
IT1314415B1 (it) * 2000-06-23 2002-12-13 Vi Be Mac Spa Dispositivo per il controllo della pressione dei piedini premistoffaper macchine da cucire o simili.
JP2006102396A (ja) * 2004-10-08 2006-04-20 Juki Corp ミシン
CH697309B1 (de) * 2005-05-09 2008-08-15 Gegauf Fritz Ag Vorrichtung zum Betätigen mehrerer Funktionen einer Nähmaschine.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975169A1 (de) 2014-07-16 2016-01-20 Dürkopp Adler AG Nähmaschine
DE102014213877A1 (de) 2014-07-16 2016-01-21 Dürkopp Adler AG Nähmaschine
TWI681091B (zh) * 2014-07-16 2020-01-01 德商都寇帕鷹股份有限公司 縫紉機
DE202015104412U1 (de) 2015-08-20 2016-11-22 Dürkopp Adler AG Nähmaschine sowie Nähmaschinen-Baugruppe
EP3133198A1 (de) 2015-08-20 2017-02-22 Dürkopp Adler AG Nähmaschine sowie nähmaschinen-baugruppe

Also Published As

Publication number Publication date
JP2014131779A (ja) 2014-07-17
CN101545179A (zh) 2009-09-30
KR101534862B1 (ko) 2015-07-07
KR20090103980A (ko) 2009-10-05
JP5786062B2 (ja) 2015-09-30
CN101545179B (zh) 2013-04-03
JP5530646B2 (ja) 2014-06-25
JP2009240771A (ja) 2009-10-22
EP2105526A1 (de) 2009-09-30
DE102008016353A1 (de) 2009-10-08

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