CN101671923A - Thread breakage detecting device for buttonhole sewing machine - Google Patents
Thread breakage detecting device for buttonhole sewing machine Download PDFInfo
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- CN101671923A CN101671923A CN200910153540A CN200910153540A CN101671923A CN 101671923 A CN101671923 A CN 101671923A CN 200910153540 A CN200910153540 A CN 200910153540A CN 200910153540 A CN200910153540 A CN 200910153540A CN 101671923 A CN101671923 A CN 101671923A
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Abstract
A thread breakage detecting device for a buttonhole sewing machine comprises the buttonhole sewing machine. A thread through rod is arranged in a thread passage way of the buttonhole sewing machine and positioned beside a take-up lever or a needle rod. The thread through rod is provided with a thread through hole through which an upper thread can pass. One end of the thread through rod is directlyconnected to a force-type sensor which is arranged in the buttonhole sewing machine. When thread breakage happens during the sewing at a buttonhole, the detecting device sends out a signal, and the sewing work is stopped immediately, therefore the whole clothes material scrapping due to the continuity of a hole cutting step can be avoided.
Description
Technical field
The present invention relates to a kind of broken thread detector of Sewing machines suture, refer in particular to broken thread detector the Buttonhole sewing machine suture.
Background technology
Sewing machines runs into suture through regular meeting and disconnects phenomenon in the sewing process; this broken string can cause whole clothing to scrap for Buttonhole sewing machine; this is because Buttonhole sewing machine will roll setting cut out buttonhole after finishing seam cage knob hole in the middle of buttonhole stitch mark at every turn, is difficult to reach even requirement if want after the broken string to squeegee in the buttonhole both sides of the incision that cuts out.Therefore, broken thread detector is very necessary for Buttonhole sewing machine.
At present, the broken thread detector of Sewing machines has following several:
The first kind is a kind of yarn take-up spring formula broken thread detector, it mainly be utilize yarn take-up spring in crossing line because the motion of thread take-up tension lever makes its torsional movement repeatedly, contact, leave with the detection lug that is arranged on the next door and produce signal and judge whether to break.
Second class is a kind of broken thread detector, and it by the sending out, receive and directly produce signal between the two poles of the earth of photoelectric sensor, judges whether suture to break according to signal.
The 3rd class is a kind of broken thread detector, and it utilizes a certain line spare of crossing as torsion spring, flexure strip moving when crossing line, drives a conductor and makes the circuit switching provide signal to the I/O unit, judges whether broken string.
The 4th class is a kind of broken thread detector with magnetic inductor, and it utilizes a certain occurrence positions skew under the online tension force of line spare of crossing, and this skew produces the signal of changes of magnetic field, can judge whether broken string according to this signal.
There is certain deficiency in above-mentioned broken thread detector, as yarn take-up spring formula broken thread detector, only having on the Sewing machines of yarn take-up spring and could using, exists limitation.The shortcoming of photoelectric sensor broken thread detector is, when being stained with greasy dirt or falling to going up knitting wool hair dirt, can influence the collection of signal and out of hand.Utilize the wire break detection method of connecting and disconnecting of the circuit generation signal loaded down with trivial details, reliability is poor again.
Chinese patent once disclosed a kind of " broken thread detector of Sewing machines " (Japan, publication number CN1392301A, open day 2003.1.22), a kind of stitching balance yarn tensioner of Sewing machines comprises a rotating disk, this rotating disk has one perpendicular to the axial surface of axle, and is installed on the axle.Broken thread detector comprises the permanent magnet spare that is installed on the disc surfaces and can detect the hole part in magnetic field that permanent magnet spare produces, and output detection signal, and detection components detects broken string according to the detection signal from the hole part.Because broken thread detector is integrally formed on the stitching balance yarn tensioner, broken thread detector can be installed on the Sewing machines and can not increase the quantity of parts and the size of Sewing machines.It belongs to above-mentioned the 4th class.
Chinese patent once disclosed a kind of " wire-off detection device for sewing machine " (China, publication number CN1962990A, open day 2007.5.16), comprise mount pad, be arranged on the torsion spring on the mount pad, end at torsion spring has a feeler lever, on feeler lever, be provided with a cable-through hole that supplies sewing thread to pass, a sensing chip that is provided with the torsion spring insulation also is housed on the described mount pad, torsion spring and sensing chip are connected on the two poles of the earth of power supply respectively by connecting wire, on the circuit between torsion spring and the sensing chip, also be in series with the I/O unit of a received current signal, be used to judge whether that the control system and the I/O unit that break link.It belongs to above-mentioned the 3rd class.
Chinese patent once disclosed a kind of " thread tension debugging and broken thread detector " (China, notification number CN201068523Y, day for announcing 2008.6.4), and it comprises thread tension debugging mechanism and suture consumption counting device; Described thread tension debugging mechanism's measurement tension data also outputs to computer or display screen; Code-disc rotation synchronous with it of described suture consumption counting device interlock, flute profile photoelectric sensor are stuck in described code-disc with its short slot and write down the rotation data of code-disc and rotation data is defeated by computer.It is used for computerized emboridering machine.
Summary of the invention
The object of the present invention is to provide a kind of thread breakage detecting device for buttonhole sewing machine, in when, in carrying out some buttonhole sewing broken string taking place, send signal by this checkout gear, sewing work is stopped at once, avoid cutting proceeding of hole work step and cause whole dress material to be scrapped.
For achieving the above object, the solution that the present invention takes is, a kind of thread breakage detecting device for buttonhole sewing machine, it comprises Buttonhole sewing machine, one mast is set in the passing channel of Buttonhole sewing machine, and mast is arranged on thread take-up tension lever or shank next door, has the cable-through hole that a upper thread can pass through on the mast, mast one end directly is connected on the power formula sensor, and power formula sensor is installed in the Buttonhole sewing machine.
Utilize in the sewing thread take-up tension lever or shank the swing or move up and down, drive upper thread (suture) and make it a motion perpendicular to the axis direction of the cable-through hole on the mast, the pulling mast makes power formula sensor direct-connected with it produce signal, and the expression suture is in normal condition; When the suture on the eedle disconnects, disappear perpendicular to the pulling force of the axis direction of cable-through hole, the output of power formula sensor no signal, the expression suture disconnects.These signals constantly flow to engine control system in the sewing process, work on or out-of-work conditional information for it provides.
Description of drawings
Fig. 1 is that schematic diagram is looked on a Buttonhole sewing machine upper thread passing channel and a needle bar mechanism left side.
Fig. 2 is a Buttonhole sewing machine upper thread passing channel schematic top plan view.
Fig. 3 is mast and power formula sensor cluster master TV structure schematic diagram.
Fig. 4 is mast and power formula sensor cluster side-looking structural representation.
Among the figure: 0, hole, 1, upper thread, 2, cross line plate a, 3, wire column; 4, tension disk I, 5, tension disk II, 6, cross line plate b, 7, dial the line bar; 8, cross line plate c, 9, thread take-up tension lever, 10, cross line plate d, 11, cable-through hole; 12, shank, 13, eedle, 14, machine body cover, 15, power formula sensor; 16, mast, 17, go up axle, 18, crank, 19, connecting rod; 20, safeguard protection cover, 21, seat board, 22, Buttonhole sewing machine.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is further described.
This embodiment is the computer thread breakage detecting device for buttonhole sewing machine, and is used on the upper thread of eedle.
Referring to Fig. 1-Fig. 4, a kind of thread breakage detecting device for buttonhole sewing machine, it comprises Buttonhole sewing machine 22, one mast 16 is set in the passing channel of Buttonhole sewing machine 22, mast 16 is arranged on thread take-up tension lever 9 or shank 12 next doors, have the cable-through hole 11 that a upper thread can pass through on the mast 16, mast 16 1 ends directly are connected on the power formula sensor 15, and power formula sensor 15 is installed in the Buttonhole sewing machine 22.
Referring to Fig. 1-Fig. 4, utilize 12 swings of thread take-up tension lever 9 or shank in the sewing or move up and down, drive upper thread 1 (suture) and make it a motion perpendicular to the axis direction of cable-through hole 11, pulling mast 16, make power formula sensor 15 direct-connected with it produce signal, expression upper thread 1 is in normal condition; When the upper thread on the eedle 13 1 disconnects, perpendicular to the pulling force disappearance of cable-through hole 11 axis directions, the output of power formula sensor 15 no signals, expression upper thread 1 disconnects.These signals constantly flow to engine control system in the sewing process, work on or out-of-work conditional information for it provides.
As shown in Figure 2, the upper thread 1 of sewing usefulness passed through line plate a2, tension disk I 4, wire column 3, tension disk II 5 successively, crossed line plate c8, crossed line plate b6, dialled line bar 7, thread take-up tension lever 9, crossed line plate d10, mast 16, shank 12 to eedle 13.Tension disk I 4 and tension disk II 5 regulate upper thread 1 tension force size, dialling line bar 7 is to have controlled the suture amount, eedle 13 on the thread take-up tension lever 9 control shanks 12 forms wire loop and tightens up wire loop subsequently when the pin position is up down, cover in the body of shank 12 from crossing the line of crossing of upper thread 1 that line plate 10 passes through, lead on the eedle 13 from the hole 0 of the lower end of shank 12 through shank 12 upper ends.Shank 12 is driven and is moved up and down by the crank 18 on the last axle 17, connecting rod 19, drives upper thread 1 and swings up and down to the one section line L that crosses upper thread 1 between the line cover of shank 12 upper ends from crossing line plate d10.
As shown in Figure 2, described mast 16 is arranged on shank 12 and crosses between the line plate d10, is intended to the tension force of one section line L of upper thread 1 is detected.
As Fig. 1, Fig. 3 and shown in Figure 4, mast 16 directly is connected on the power formula sensor 15, upper thread 1 passes the cable-through hole 11 of mast 16, described cable-through hole 17 was lower than the through wires hole of line plate d10 in vertical direction, when shank 12 rises to thread take-up tension lever 9 take-ups from the lower end, 1 pair of mast 16 of upper thread has a pulling force that makes progress, and produces a signal by power formula sensor 15; When shank 12 dropped to the lower end, thread take-up tension lever 9 was in the line sending stage, the disappearing of 1 pair of mast 16 of upper thread to upper pulling force, and the signal of power formula sensor 15 also disappears thereupon.The signal that power formula sensor 15 produces is transported to control system through amplification, it is that shank 12 descends, circulation of rising that control system whenever circles according to last axle, whether whether power formula sensor 15 has signal to transmit judgement is broken, and is broken string if some circulations do not have signal, and main motor stops.
As shown in Figure 3 and Figure 4, described mast 16 and Li Shi sensor 15 assemblies add safeguard protection cover 20, and safeguard protection cover 20 is connected on the seat board 21, and seat board 21 is connected on the machine body cover 14.Because power formula sensor 15 is a kind of force cell; having range limits; mast 16 1 ends are connected on the power formula sensor 15; and the other end is exposed to cover top; when accident is collided; the formula of will exerting all one's strength sensor 15 transships and damages; by adding safeguard protection cover 20; safeguard protection cover 20 is connected on the seat board 21; seat board 21 is connected on the machine body cover 14; even if therefore safeguard protection cover 20 is collided and also can injure power formula sensor 15, also damage the generation that this kind of thing with regard to avoiding power formula sensor 15 overloads.
In the present embodiment, cross line plate a2, tension disk I 4, wire column 3, tension disk II 5, cross line plate c8, cross line plate b6, dial line bar 7, cross line plate d10, thread take-up tension lever 9, shank 12, eedle 13, machine body cover 14, to go up axle 17, crank 18, connecting rod 19, seat board 21 all are intrinsic of Buttonhole sewing machine 14.
Claims (4)
1, a kind of thread breakage detecting device for buttonhole sewing machine, it comprises Buttonhole sewing machine (22), it is characterized in that: a mast (16) is set in the passing channel of Buttonhole sewing machine (22), mast (16) is arranged on thread take-up tension lever (9) or shank (12) next door, have the cable-through hole (11) that a upper thread can pass through on the mast (16), mast (16) one ends directly are connected on the power formula sensor (15), and power formula sensor (15) is installed in the Buttonhole sewing machine (22).
2, thread breakage detecting device for buttonhole sewing machine according to claim 1 is characterized in that: described mast (16) is arranged on shank (12) and crosses between the line plate d (10).
3, thread breakage detecting device for buttonhole sewing machine according to claim 1 and 2 is characterized in that: described cable-through hole (17) was lower than the through wires hole of line plate d (10) in vertical direction.
4, thread breakage detecting device for buttonhole sewing machine according to claim 1; it is characterized in that: described mast (16) and power formula sensor (15) assembly add safeguard protection cover (20); safeguard protection cover (20) is connected on the seat board (21), and seat board (21) is connected on the machine body cover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153540A CN101671923A (en) | 2009-10-05 | 2009-10-05 | Thread breakage detecting device for buttonhole sewing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153540A CN101671923A (en) | 2009-10-05 | 2009-10-05 | Thread breakage detecting device for buttonhole sewing machine |
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| CN101671923A true CN101671923A (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910153540A Pending CN101671923A (en) | 2009-10-05 | 2009-10-05 | Thread breakage detecting device for buttonhole sewing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205866A (en) * | 2013-03-27 | 2013-07-17 | 新杰克缝纫机股份有限公司 | Overedger shield safety switch structure and overedger shield safety protecting method |
| CN105937101A (en) * | 2016-06-24 | 2016-09-14 | 杰克缝纫机股份有限公司 | Sewing machine and broken stitch detection mechanism thereof |
| CN106283417A (en) * | 2015-05-12 | 2017-01-04 | 安徽原野滤材有限公司 | A kind of immersion oil broken thread detector for filter bag linking machine |
| CN108286136A (en) * | 2018-04-03 | 2018-07-17 | 南京亚奇过滤材料设备有限公司 | A kind of broken string identification warning device and method |
| CN110820187A (en) * | 2019-12-13 | 2020-02-21 | 谭英 | Intelligent full-automatic hot-melting winding machine |
-
2009
- 2009-10-05 CN CN200910153540A patent/CN101671923A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205866A (en) * | 2013-03-27 | 2013-07-17 | 新杰克缝纫机股份有限公司 | Overedger shield safety switch structure and overedger shield safety protecting method |
| CN103205866B (en) * | 2013-03-27 | 2015-07-22 | 杰克缝纫机股份有限公司 | Overedger shield safety switch structure and overedger shield safety protecting method |
| CN106283417A (en) * | 2015-05-12 | 2017-01-04 | 安徽原野滤材有限公司 | A kind of immersion oil broken thread detector for filter bag linking machine |
| CN105937101A (en) * | 2016-06-24 | 2016-09-14 | 杰克缝纫机股份有限公司 | Sewing machine and broken stitch detection mechanism thereof |
| CN108286136A (en) * | 2018-04-03 | 2018-07-17 | 南京亚奇过滤材料设备有限公司 | A kind of broken string identification warning device and method |
| CN108286136B (en) * | 2018-04-03 | 2023-08-29 | 南京亚奇过滤材料设备有限公司 | Broken line identification alarm device and method |
| CN110820187A (en) * | 2019-12-13 | 2020-02-21 | 谭英 | Intelligent full-automatic hot-melting winding machine |
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Application publication date: 20100317 |