CN104452129A - Yarn breaking detecting method and device for sewing machine - Google Patents
Yarn breaking detecting method and device for sewing machine Download PDFInfo
- Publication number
- CN104452129A CN104452129A CN201410756461.1A CN201410756461A CN104452129A CN 104452129 A CN104452129 A CN 104452129A CN 201410756461 A CN201410756461 A CN 201410756461A CN 104452129 A CN104452129 A CN 104452129A
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- mcu
- proximity transducer
- iic
- sewing
- sewing machine
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- 238000009958 sewing Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/36—Devices for stopping drive when abnormal conditions occur, e.g. thread breakage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a yarn breaking detecting device for a sewing machine. The device is applied to the sewing machine and used for detecting whether or not sewing yarns on the sewing machine are broken. The yarn breaking detecting method includes that internal current, gain and threshold value of a proximity sensor are configured by an MCU (micro controller unit) through an IIC (inter-integrated circuit) bus; a receiver receives reflected optical signals and converts signal strength into analog values for storage; an IIC controller automatically compares the analog values and a preset threshold valve and sends signals showing whether or not the yarns are broken to the MCU through the IIC bus; in case that no yarn breaks, the proximity sensor detects again, and in case that the yarn breaks, the MCU stops a motor of the sewing machine running and sends an alarm command. The yarn breaking detecting device is small in size, low in cost, capable of sensitively detecting whether or not the yarn breaks within a certain range flexible to adjust, non-contactable, causing no influence on sewing trace, and long in service life and has yarn breaking photoelectric indication.
Description
Technical field
The invention belongs to Garment Technology field, particularly a kind of wire break detection method of Sewing machines and device.
Background technology
Sewing machines, in the process of making, due to factors such as mechanism is bad, cloth thickness, suture quality, can cause the situation of broken string.As can not Timeliness coverage, can cloth be damaged, produce defective products, waste product, affect quality, cause economic loss simultaneously.Therefore need to detect broken string in time, and do corresponding process.Mainly contain at present with under type:
1. visual inspection, namely direct labor checks clothing in the process of making, and this mode can rule of thumb exist larger delay, and Sewing machines rotating speed is generally very fast, time to be found, late, is not suitable for for semi-automatic, full-automatic sewing device;
2. mechanism type, namely by mechanical structure, hooks suture as spring and is connected with mechanical switch, mechanical switch contact or disconnection during broken string, thus produces control signal.This scheme device directly contacts with sewing thread, exists and affects stitching, complex structure, be unfavorable for the shortcoming that automation is made;
3. laser opposite-radiation: sewing thread need pass between launching and receiving, installs not easily, and laser exists life-span shorter shortcoming, and cost is more expensive.
Such as, middle prompt company designs a kind of broken thread detector (publication number CN 1962990A), mainly utilize Sewing machines move time, drive the movement of torsion spring, thus driving mechanical switch, causing the break-make of circuit, judging whether sewing thread disconnects by exporting the signal of telecommunication.Torsion spring is for must this device.But torsion spring can to the strong effect of sewing thread and frequency height so line also more easily disconnect, the elasticity of sewing thread also can be influenced, and present Sewing machines is various, and not all sewing thread operationally all can swing.
Juki Corporation of Japan devises a kind of broken thread detector.Mainly utilize the contact of the yarn take-up spring crossing line position with the detection lug installed on this side, position of Sewing machines, leave to produce signal to judge whether and break.This device needs to utilize the yarn take-up spring carrying out function of receiving line when using sewing, so yarn take-up spring can not regulate separately according to the demand detected, otherwise function of receiving line can be caused to have an impact, and this mechanism's scope of application is restricted, is only applicable to this kind of Sewing machines with yarn take-up spring structure.
In addition, a kind of lockstitch button holder of Du Kepu company designs of Germany, adopts an electronic component without rectangular channel.When there being sewing thread to move at this groove, signal is just had to export.But this device price comparison is expensive, is unfavorable for applying.
Summary of the invention
The object of this invention is to provide a kind of wire break detection method and device of Sewing machines, to solve the drawback of existing checkout gear and method.
Technical scheme of the present invention is, a kind of wire break detection method of Sewing machines, adopts proximity transducer, this proximity transducer comprises a transmitter and receiver, an IIC controller, when not having object above proximity transducer, receiver does not receive the optical signal be reflected back
When there being object to be placed in above proximity transducer, receiver receives the optical signal be reflected back, and intensity is stored with the analogue value, automatically compares with the threshold value of setting, sends whether disconnection signal by iic bus to MCU,
Described proximity transducer and weld on circuit boards with the MCU that this proximity transducer carries out IIC communication, circuit board is fixed on shell by screw,
Described detection method comprises the following steps:
(1) power on to MCU and proximity transducer;
(2) MCU configures internal current and the gain of proximity transducer;
(3) infrared signal launched by transmitter;
(4) receiver receives infrared signal, and signal strength signal intensity is stored with the analogue value;
(5) IIC controller compares the size of the analogue value and threshold value automatically, and the information that will whether break is transferred to MCU by iic bus;
(6) if broken string, MCU stops the running of electrical motor of sewing machine, and sends alarm command,
Described circuit board also comprises 1 LED light, for instruction of breaking.
A kind of broken thread detector of Sewing machines, this application of installation is on sewing-machine equipment, described device is provided with proximity transducer, for installing shell appendage that the circuit board of this sensor and circuit board install and carrying out the MCU of IIC communication with this proximity transducer, wherein MCU is the abbreviation of microcontroller, this proximity transducer comprises a transmitter, receiver, an IIC controller
The testing process of described checkout gear is:
MCU is by the iic bus configuration internal current of proximity transducer, gain and threshold value; Receiver receives the optical signal be reflected back, and signal strength signal intensity is converted into the analogue value stores; IIC controller automatically carries out comparing of the threshold values of the analogue value and setting; And by iic bus will whether disconnection signal transfers to MCU; If do not broken, proximity transducer can detect again; If broken string, then MCU stops the running of electrical motor of sewing machine, and sends alarm command.
The proximity transducer that the present invention adopts is installed on above mobile phone screen usually, and when mobile phone is made a phone call, mobile phone is near face, and screen can automatic blank screen.Because the headphone of mobile phone has such proximity transducer.Transmitter, receiver, IIC controller integrate by proximity transducer, it can receive the instruction of single-chip microcomputer by iic bus, the size of current of sensor internal is changed according to instruction, the i.e. intensity of infrared emission, the interruption threshold values of sensor can also be changed, regulate the scope of burn out detection, can also receiving gain be changed, change the scope and sensitivity that detect, and its inside carries interrupt signal output.
For with the naked eye checking disconnection manner, the present invention has prompt functions, very clearly, can know whether sewing thread disconnects very timely; For existing mechanism type detection mode, checkout gear of the present invention does not contact sewing thread, can not have an impact, and structure is simple to stitching; For the device mode of existing laser opposite-radiation, the present invention can detect the sewing thread in certain limit, is convenient to install, and with low cost; And for other broken thread detector, the present invention can Adjustment precision easily, and the adjustment of precision can not have an impact to the operation of a machine, and very little by the impact of external environment condition.
Apparatus of the present invention have following features:
1, volume is little; 2, cost is low; 3, can be very sensitive detect whether sewing thread disconnects, detecting distance can within the specific limits, flexible modulation; 4, belong to contactless, can not sewing thread trace be affected; 5, band broken string photoelectricity instruction in device; 6 have more than 100,000 hours life-spans.
Device of the present invention is very little, long 16mm, whether wide 9mm, can not cause detecting because crossing line mechanism and break, and sewing thread of getting along well has contact, can not impact stitching, can both detect the line of different colours, and detecting distance can be adjusted by MCU very flexibly, and the output of mobile phone is many now, cause the price of proximity transducer very low, so this invention inexpensive.
Accompanying drawing explanation
Fig. 1 is the detection method flow chart of the embodiment of the present invention.
Fig. 2 is signal wiring figure of the present invention
Detailed description of the invention
The present invention adopts a kind of proximity transducer be usually installed on mobile phone.MCU is by iic bus connecting sensor wiring interface, and circuit board is fixed on shell by screw, and on circuit boards, in time not having line in proximity transducer upper end, the alarm lamp on MCU will be reported to the police in proximity transducer welding.Circuit board of the present invention also comprises the LED light that is used to indicate broken string.MCU is connected with proximity transducer by iic bus.Proximity transducer is by a transmitting tube, and receiving tube, an IIC controller composition, and the length, width and height of proximity transducer are respectively: 4*2*1.3 (mm).
According to Fig. 1, wire break detection method can comprise the following steps:
(1) power on to MCU and proximity transducer;
(2) MCU configures internal current and the gain of proximity transducer;
(3) infrared signal launched by transmitter;
(4) receiver receives infrared signal, and signal strength signal intensity is stored with the analogue value;
(5) IIC controller compares the size of the analogue value and threshold values automatically, and the information that will whether break is transferred to MCU by iic bus form;
(6) if broken string, MCU stops the running of electrical motor of sewing machine, and sends alarm command.
Adopt the device of the burn out detection of a kind of Sewing machines of the present invention, this application of installation is on sewing-machine equipment, described device is provided with proximity transducer, for installing shell appendage that the circuit board of this sensor and circuit board install and carrying out the MCU of IIC communication with sensor, wherein MCU is the abbreviation of microcontroller, and this proximity transducer comprises a transmitter, receiver, an IIC controller.Whether the broken thread detector of the present invention sewing thread be used on detection Sewing machines disconnects.Testing process of the present invention is MCU by the internal current of iic bus configuration proximity transducer, gain and threshold value; Receiver receives the optical signal be reflected back, and signal strength signal intensity is converted into the analogue value stores; IIC controller automatically carries out comparing of the threshold values of the analogue value and setting; And by iic bus will whether disconnection signal transfers to MCU; If do not broken, proximity transducer can detect again; If broken string, then MCU stops the running of electrical motor of sewing machine, and sends alarm command.It is little that the present invention has volume; Cost is low; Can be very sensitive detect whether sewing thread disconnects, detecting distance can within the specific limits, flexible modulation; Belong to contactless, can not sewing thread trace be affected, there is longer life; Band broken string photoelectricity instruction in device.
Claims (2)
1. a wire break detection method for Sewing machines, adopt proximity transducer, this proximity transducer comprises a transmitter and receiver, an IIC controller, and when not having object above proximity transducer, receiver does not receive the optical signal be reflected back,
When there being object to be placed in above proximity transducer, receiver receives the optical signal be reflected back, and intensity is stored with the analogue value, automatically compares with the threshold value of setting, sends whether disconnection signal by iic bus to MCU,
Described proximity transducer and weld on circuit boards with the MCU that this proximity transducer carries out IIC communication, circuit board is fixed on shell by screw,
It is characterized in that, described detection method comprises the following steps:
(1) power on to MCU and proximity transducer;
(2) MCU configures internal current and the gain of proximity transducer;
(3) infrared signal launched by transmitter;
(4) receiver receives infrared signal, and signal strength signal intensity is stored with the analogue value;
(5) IIC controller compares the size of the analogue value and threshold value automatically, and the information that will whether break is transferred to MCU by iic bus;
(6) if broken string, MCU stops the running of electrical motor of sewing machine, and sends alarm command,
Described circuit board also comprises 1 LED light, for instruction of breaking.
2. the broken thread detector of a Sewing machines, this application of installation is on sewing-machine equipment, described device is provided with proximity transducer, for installing shell appendage that the circuit board of this sensor and circuit board install and carrying out the MCU of IIC communication with this proximity transducer, wherein MCU is the abbreviation of microcontroller, this proximity transducer comprises a transmitter, receiver, an IIC controller
The testing process of described checkout gear is:
MCU is by the iic bus configuration internal current of proximity transducer, gain and threshold value; Receiver receives the optical signal be reflected back, and signal strength signal intensity is converted into the analogue value stores; IIC controller automatically carries out comparing of the threshold values of the analogue value and setting; And by iic bus will whether disconnection signal transfers to MCU; If do not broken, proximity transducer can detect again; If broken string, then MCU stops the running of electrical motor of sewing machine, and sends alarm command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756461.1A CN104452129A (en) | 2014-12-10 | 2014-12-10 | Yarn breaking detecting method and device for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756461.1A CN104452129A (en) | 2014-12-10 | 2014-12-10 | Yarn breaking detecting method and device for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104452129A true CN104452129A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410756461.1A Pending CN104452129A (en) | 2014-12-10 | 2014-12-10 | Yarn breaking detecting method and device for sewing machine |
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| Country | Link |
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| CN (1) | CN104452129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012315A (en) * | 2016-07-25 | 2016-10-12 | 天津天石休闲用品有限公司 | Automatic error correction multi-head quilting machine |
| CN110690015A (en) * | 2019-10-11 | 2020-01-14 | 新疆榕江电缆制造有限公司 | Broken tape monitoring device of wrapping machine |
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|---|---|---|---|---|
| CN1341783A (en) * | 2000-09-06 | 2002-03-27 | 飞马缝纫机制造株式会社 | Detection device for stitching defect |
| CN1405394A (en) * | 2001-08-13 | 2003-03-26 | Pfaff工业机械股份公司 | Device for monitoring and controlling bobbin thread on double catched stitch sewing machine |
| CN101086105A (en) * | 2006-06-08 | 2007-12-12 | 禾格实业有限公司 | Direct drive servo drive structure of cloth pulling device |
| CN202072909U (en) * | 2011-04-26 | 2011-12-14 | 董兴武 | Automatic stopping alarm system of multineedle sewing machine for line broken |
| CN103469503A (en) * | 2013-09-22 | 2013-12-25 | 新杰克缝纫机股份有限公司 | Control system of industrial sewing machine |
-
2014
- 2014-12-10 CN CN201410756461.1A patent/CN104452129A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341783A (en) * | 2000-09-06 | 2002-03-27 | 飞马缝纫机制造株式会社 | Detection device for stitching defect |
| CN1405394A (en) * | 2001-08-13 | 2003-03-26 | Pfaff工业机械股份公司 | Device for monitoring and controlling bobbin thread on double catched stitch sewing machine |
| CN101086105A (en) * | 2006-06-08 | 2007-12-12 | 禾格实业有限公司 | Direct drive servo drive structure of cloth pulling device |
| CN202072909U (en) * | 2011-04-26 | 2011-12-14 | 董兴武 | Automatic stopping alarm system of multineedle sewing machine for line broken |
| CN103469503A (en) * | 2013-09-22 | 2013-12-25 | 新杰克缝纫机股份有限公司 | Control system of industrial sewing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012315A (en) * | 2016-07-25 | 2016-10-12 | 天津天石休闲用品有限公司 | Automatic error correction multi-head quilting machine |
| CN110690015A (en) * | 2019-10-11 | 2020-01-14 | 新疆榕江电缆制造有限公司 | Broken tape monitoring device of wrapping machine |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |