CN103184660A - Thread releasing device for sewing machine - Google Patents

Thread releasing device for sewing machine Download PDF

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Publication number
CN103184660A
CN103184660A CN2013100900551A CN201310090055A CN103184660A CN 103184660 A CN103184660 A CN 103184660A CN 2013100900551 A CN2013100900551 A CN 2013100900551A CN 201310090055 A CN201310090055 A CN 201310090055A CN 103184660 A CN103184660 A CN 103184660A
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China
Prior art keywords
thread
thread loosening
top plate
electromagnet
sewing machine
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CN2013100900551A
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Chinese (zh)
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CN103184660B (en
Inventor
祝书伟
杨斌
应振华
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Jack Technology Co Ltd
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New Jack Sewing Machine Co Ltd
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Abstract

本发明属于缝纫机配件技术领域，特指一种缝纫机松线装置，包括有可绕转轴转动的松线顶板，电磁铁及用来顶开夹线器进行松线的松线辅钉，电磁铁的铁芯与松线辅钉的轴线共线或平行设置，松线顶板可分别由抬压脚装置或电磁铁驱动绕转轴转动进而带动松线辅钉顶开夹线器进行松线动作，电磁铁的动作由控制器控制，本发明通过抬压脚装置及电磁铁均可带动松线顶板绕轴位螺钉转动顶开夹线器从而实现松线，抬压脚带动及电磁铁带动为相互独立，互不影响；性能稳定，剪线长短一致，提升了缝纫机的品质，适用于各种平缝机上。

The invention belongs to the technical field of sewing machine accessories, and particularly refers to a sewing machine thread loosening device, which includes a thread loosening top plate that can rotate around a rotating shaft, an electromagnet, and an auxiliary thread loosening nail for pushing open the thread clamp to loosen the thread. The axis of the iron core and the thread loosening auxiliary nails are set in line or in parallel. The thread loosening top plate can be driven by the presser foot lifting device or the electromagnet to rotate around the rotating shaft and then drive the thread loosening auxiliary nails to lift the thread clamp to perform the thread loosening action. The action is controlled by the controller. In the present invention, both the presser foot lifting device and the electromagnet can drive the thread loosening top plate to rotate around the axis screw and open the thread clamp to realize thread loosening. The presser foot lifting drive and the electromagnet drive are independent of each other. They do not affect each other; the performance is stable, and the length of the thread trimming is consistent, which improves the quality of the sewing machine and is suitable for all kinds of lockstitch sewing machines.

Description

A kind of Sewing machines thread-loosening device
Technical field:
The invention belongs to Sewing machines accessory technical field, refer in particular to a kind of Sewing machines thread-loosening device.
Background technology:
Generally all be provided with tension disk on the Sewing machines.The effect of tension disk is that tension disk clamps upper thread when Sewing machines is worked, and makes upper thread have suitable elasticity; After sewing finished, during automatic shearing, tension disk can not unclamp automatically, then needed to arrange thread-loosening device control tension disk and unclamped automatically.In the prior art, what thread-loosening device adopted is guy structure.This structure exists: instability, make when trimming different in sizely, and reduced the weak points such as quality of Sewing machines.
Summary of the invention:
The purpose of this invention is to provide a kind of stable performance, can when presser foot lifter or trimming, all can realize the Sewing machines thread-loosening device of loose ends action.
The present invention is achieved in that
A kind of Sewing machines thread-loosening device, include the loose ends top board that can rotate around the axis, electromagnet and being used for backs down the auxilliary nail of loose ends that tension disk carries out loose ends, the iron core of electromagnet and loose ends are assisted the axis conllinear of nail or are be arranged in parallel, the loose ends top board can be rotated around the axis and then drive the auxilliary screw top open tension device of loose ends respectively and carry out the loose ends action by presser foot lifting device or solenoid actuated, the action of electromagnet is controlled by controller.
Above-mentioned loose ends top board is that the external cylindrical surface of hollow circular cylinder is provided with top board one and top board two, and top board one is arranged on the presser feet lifter plate top of presser foot lifting device, and top board two is arranged between the iron core of the auxilliary nail of loose ends and electromagnet.
The baseplane of above-mentioned top board one is connected with the contact of the presser feet lifter plate of presser foot lifting device.
The auxilliary nail joint of one side plane of above-mentioned top board two and loose ends touch is connected, the opposite side plane contacts with the iron core of electromagnet and is connected.
One side of above-mentioned loose ends top board is provided with resetting means.
Above-mentioned resetting means is: be arranged on the spring suspension screw of rotating shaft one side, the spring suspension screw axis is parallel with shaft axis, is arranged with reduction torsion spring at the spring suspension screw, and an end of reduction torsion spring holds out against on the loose ends top board.
Above-mentioned rotating shaft is axial screw, and axial screw is arranged on the loose ends top board on the casing.
One end of above-mentioned spring suspension screw is arranged on the casing.
The advantage that the present invention gives prominence to compared to existing technology is:
1, thereby the present invention all can drive the loose ends top board by presser foot lifting device and electromagnet and back down tension disk realization loose ends around the axial screw rotation, and presser foot lifter drives and electromagnet drives to separate, is independent of each other;
2, the present invention adopts spring reset, and noise is little;
3, stable performance of the present invention, trimming length unanimity has promoted the quality of Sewing machines, is applicable on the various flat seam machine.
Description of drawings:
Fig. 1 is the schematic diagram after the present invention installs;
Fig. 2 is the schematic diagram after the present invention installs back dismounting presser feet;
Fig. 3 is one of schematic diagram of the top board one of the present invention presser feet lifter plate top that is arranged on presser foot lifting device;
Fig. 4 be the top board one of the present invention presser feet lifter plate top that is arranged on presser foot lifting device schematic diagram two;
Fig. 5 is one of schematic diagram of loose ends top board of the present invention;
Fig. 6 be loose ends top board of the present invention schematic diagram two.
The specific embodiment:
With specific embodiment the present invention is further described below, referring to Fig. 1-6:
A kind of Sewing machines thread-loosening device, include the loose ends top board 10 that can rotate around the axis, electromagnet 20 and being used for backs down the auxilliary nail 40 of loose ends that tension disk 30 carries out loose ends, the iron core 201 of electromagnet 20 is assisted the axis conllinear of nail 40 with loose ends or is be arranged in parallel, loose ends top board 10 can be respectively driven rotate around the axis and then drive the auxilliary nail 40 of loose ends by presser foot lifting device 50 or electromagnet 20 and backs down tension disk 30 and carry out the loose ends action, and the action of electromagnet 20 is controlled by controller.It is separate action that presser foot lifting device 50 or electromagnet 20 drive loose ends top board 10, mutually noninterfere.In the auxilliary nail of the loose ends that is arranged on casing 70 installing hole of the auxilliary nail 40 of loose ends, the tension releasing pin 301 of an end top tension disk 30 of the auxilliary nail 40 of loose ends.
Above-mentioned loose ends top board 10 is that the external cylindrical surface of hollow circular cylinder 103 is provided with top board 1 and top board 2 102, top board 1 is arranged on presser feet lifter plate 501 tops of presser foot lifting device 50, top board 2 102 is arranged between the iron core 201 of the auxilliary nail 40 of loose ends and electromagnet 20, and the hole of hollow circular cylinder 103 is loose ends top board 10 and is installed in installing hole on the axial screw.Top board 1 is integral structure with top board 2 102, and is one-body molded with hollow circular cylinder 103.Angle angle between top board 1 and the top board 2 102 can design according to actual conditions.
The baseplane of above-mentioned top board 1 is connected with 501 contacts of the presser feet lifter plate of presser foot lifting device 50.
One side plane of above-mentioned top board 2 102 is connected with auxilliary nail 40 contacts of loose ends, the opposite side plane is connected with iron core 201 contacts of electromagnet 20.
One side of above-mentioned loose ends top board 10 is provided with resetting means.
Above-mentioned resetting means is: be arranged on the spring suspension screw 60 of rotating shaft one side, spring suspension screw 60 axis are parallel with shaft axis, are arranged with reduction torsion spring at spring suspension screw 60, and an end of reduction torsion spring holds out against on loose ends top board 10.Reduction torsion spring automatically resets after can making loose ends top board 10 each rotations, and noise is little.
Above-mentioned rotating shaft is axial screw, and axial screw is arranged on loose ends top board 10 on the casing 70.
One end of above-mentioned spring suspension screw 60 is arranged on the casing 70.
Operation principle of the present invention:
1, when presser foot lifter, when carrying out the presser foot lifter action by portable presser foot lifter handle or by knee control device presser foot lifter or other device drives, presser feet lifter plate 501 on the presser foot lifting device 50 can move up, because top board 1 is arranged on presser feet lifter plate 501 tops, presser feet lifter plate 501 is given one 101 one power that make progress of top board in the process of moving, the loose ends top board namely can rotate counterclockwise around axial screw, drive the auxilliary nail 40 of top board 2 102 top loose ends, the tension releasing pin 301 of the other end top tension disk 30 of the auxilliary nail 40 of loose ends, and then the action of realization loose ends;
2, when electric cabinet control Sewing machines trimming, electromagnet 20 energisings, the iron core 201 of electromagnet 20 is protruding to be acted on the plane of top board 2 102 of loose ends top board 10, top board 2 102 drives loose ends top board 10 and rotates counterclockwise, because top board 1 is arranged on presser feet lifter plate 501 tops, when loose ends top board 10 rotates counterclockwise, top board 1 is in reverse to 501 motions of presser feet lifter plate and can act on presser feet lifter plate 501, presser foot lifting device 50 there is not interference, the auxilliary nail 40 of top board 2 102 top loose ends, the tension releasing pin 301 of the auxilliary nail of loose ends 40 top tension disks 30, and then the action of realization loose ends.
Above-described embodiment is one of preferred embodiment of the present invention only, is not to limit practical range of the present invention with this, so: all equivalences of doing according to shape of the present invention, structure, principle change, and all should be covered by within protection scope of the present invention.

Claims (8)

1.一种缝纫机松线装置，其特征在于：包括有可绕转轴转动的松线顶板，电磁铁及用来顶开夹线器进行松线的松线辅钉，电磁铁的铁芯与松线辅钉的轴线共线或平行设置，松线顶板可分别由抬压脚装置或电磁铁驱动绕转轴转动进而带动松线辅钉顶开夹线器进行松线动作，电磁铁的动作由控制器控制。1. A thread loosening device for a sewing machine, characterized in that: it includes a thread loosening top plate that can rotate around a rotating shaft, an electromagnet and an auxiliary thread loosening nail that is used to open the thread gripper to loosen the thread, the iron core of the electromagnet and the loosening thread The axes of the thread auxiliary nails are set in line or in parallel. The thread loosening top plate can be driven by the presser foot lifting device or the electromagnet to rotate around the rotating shaft and then drive the thread loosening auxiliary nails to lift the thread clamp to perform the thread loosening action. The action of the electromagnet is controlled by device control. 2.根据权利要求1所述的一种缝纫机松线装置，其特征在于：所述的松线顶板是中空圆柱体的外圆柱面上设置有顶板一及顶板二，顶板一设置在抬压脚装置的压脚升降板上方，顶板二设置在松线辅钉与电磁铁的铁芯之间。2. A sewing machine thread loosening device according to claim 1, characterized in that: the thread loosening top plate is a hollow cylinder with top plate 1 and top plate 2 arranged on the outer cylindrical surface, and top plate 1 is set on the presser foot Above the presser foot lifting plate of the device, the top plate two is arranged between the thread loosening auxiliary nail and the iron core of the electromagnet. 3.根据权利要求2所述的一种缝纫机松线装置，其特征在于：所述的顶板一的底平面与抬压脚装置的压脚升降板接触连接。3. A sewing machine thread loosening device according to claim 2, characterized in that: the bottom plane of said top plate 1 is in contact with the presser foot lifting plate of the presser foot lifting device. 4.根据权利要求2所述的一种缝纫机松线装置，其特征在于：所述的顶板二的一侧平面与松线辅钉接触连接、另一侧平面与电磁铁的铁芯接触连接。4. A sewing machine thread loosening device according to claim 2, characterized in that one side plane of the top plate 2 is in contact with the thread loosening auxiliary nail, and the other side plane is in contact with the iron core of the electromagnet. 5.根据权利要求1所述的一种缝纫机松线装置，其特征在于：所述的松线顶板的一侧设置有复位装置。5. A sewing machine thread loosening device according to claim 1, characterized in that: one side of the thread loosening top plate is provided with a reset device. 6.根据权利要求5所述的一种缝纫机松线装置，其特征在于：所述的复位装置是：设置在转轴一侧的弹簧悬置螺钉，弹簧悬置螺钉轴线与转轴轴线平行，在弹簧悬置螺钉上套设有复位扭簧，复位扭簧的一端顶紧在松线顶板上。6. A sewing machine thread loosening device according to claim 5, characterized in that: the reset device is: a spring suspension screw arranged on one side of the rotating shaft, the axis of the spring suspension screw is parallel to the axis of the rotating shaft, and the spring A return torsion spring is sheathed on the suspension screw, and one end of the return torsion spring is pressed against the loose wire top plate. 7.根据权利要求1或6所述的一种缝纫机松线装置，其特征在于：所述的转轴为轴位螺钉，轴位螺钉将松线顶板设置在机壳上。7. A sewing machine thread loosening device according to claim 1 or 6, wherein the rotating shaft is an axial screw, and the axial screw sets the thread loosening top plate on the casing. 8.根据权利要求6所述的一种缝纫机松线装置，其特征在于：所述的弹簧悬置螺钉的一端设置在机壳上。8. A sewing machine thread loosening device according to claim 6, characterized in that: one end of the spring suspension screw is arranged on the casing.
CN201310090055.1A 2013-03-20 2013-03-20 Thread releasing device for sewing machine Active CN103184660B (en)

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Application Number Priority Date Filing Date Title
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CN103184660B CN103184660B (en) 2014-07-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108796861A (en) * 2017-05-02 2018-11-13 天津宝盈电脑机械有限公司 A kind of independent driving sewing machine head
CN110093727A (en) * 2018-11-07 2019-08-06 东莞市飞越机械有限公司 An Improved Herringbone Thread Industrial Sewing Machine
CN110219101A (en) * 2019-03-18 2019-09-10 浙江翔科缝纫机股份有限公司 A kind of sewing machine and presser foot lifter thread releasing mechanism
WO2020181904A1 (en) * 2019-03-11 2020-09-17 浙江翔科缝纫机股份有限公司 Automatic pressing foot lifting thread-loosening mechanism and sewing machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02116281U (en) * 1989-03-03 1990-09-18
CN1231355A (en) * 1998-04-07 1999-10-13 重机株式会社 Thread loosing device for sewing machine
CN101139785A (en) * 2007-09-26 2008-03-12 中捷缝纫机股份有限公司 Control device for thread gripper of sewing machine
CN101314897A (en) * 2008-04-25 2008-12-03 中捷缝纫机股份有限公司 Control device for yarn trapper in sewing machine
CN203144690U (en) * 2013-03-20 2013-08-21 新杰克缝纫机股份有限公司 Sewing machine line loosening device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02116281U (en) * 1989-03-03 1990-09-18
CN1231355A (en) * 1998-04-07 1999-10-13 重机株式会社 Thread loosing device for sewing machine
CN101139785A (en) * 2007-09-26 2008-03-12 中捷缝纫机股份有限公司 Control device for thread gripper of sewing machine
CN101314897A (en) * 2008-04-25 2008-12-03 中捷缝纫机股份有限公司 Control device for yarn trapper in sewing machine
CN203144690U (en) * 2013-03-20 2013-08-21 新杰克缝纫机股份有限公司 Sewing machine line loosening device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108796861A (en) * 2017-05-02 2018-11-13 天津宝盈电脑机械有限公司 A kind of independent driving sewing machine head
CN110093727A (en) * 2018-11-07 2019-08-06 东莞市飞越机械有限公司 An Improved Herringbone Thread Industrial Sewing Machine
WO2020181904A1 (en) * 2019-03-11 2020-09-17 浙江翔科缝纫机股份有限公司 Automatic pressing foot lifting thread-loosening mechanism and sewing machine
CN110219101A (en) * 2019-03-18 2019-09-10 浙江翔科缝纫机股份有限公司 A kind of sewing machine and presser foot lifter thread releasing mechanism

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Owner name: JACK SEWING CO., LTD.

Free format text: FORMER NAME: NEW JACK SEWING MACHINE CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 318000 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15

Patentee after: JACK SEWING MACHINE CO., LTD.

Address before: 318000 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15

Patentee before: New Jack Sewing Machine Co., Ltd.

CP03 Change of name, title or address

Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province

Patentee after: Jack Technology Co.,Ltd.

Address before: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou

Patentee before: JACK SEWING MACHINE Co.,Ltd.

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