CN105887371A - Sewing machine bottom thread detecting system and method - Google Patents
Sewing machine bottom thread detecting system and method Download PDFInfo
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- CN105887371A CN105887371A CN201610446174.XA CN201610446174A CN105887371A CN 105887371 A CN105887371 A CN 105887371A CN 201610446174 A CN201610446174 A CN 201610446174A CN 105887371 A CN105887371 A CN 105887371A
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- sewing machine
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine bottom thread quantity detecting system which is simple in structure and capable of detecting whether bottom threads are used up or not in time. The sewing machine bottom thread quantity detecting system comprises a base plate, a rotating shuttle and an electric control module, wherein a shuttle housing and a shuttle core are arranged on the rotating shuttle, the shuttle core comprises a winding post and two flanges, the flanges are made of a hard reflecting material, the outer surface of at least one of the two flanges is provided with an inclined portion inclining towards the outer edge of the flange, and a concave groove is formed in each inclined portion. A light-transmitting hole is formed in the outer wall of the shuttle housing, and the inclined portions and the grooves are exposed from the light-transmitting hole. The system further comprises a sensor, wherein the sensor comprises a transmitter and a receiver, both the transmitter and the receiver of the sensor rightly face the grooves, the grooves and the inclined portions are different in light reflecting angle, the grooves can reflect light back to the receiver, and the inclined portions cannot reflect the light back to the receiver. The sensor is connected with a signal processing module, and the signal processing module is also connected with the electric control module.
Description
Technical field
The invention belongs to sewing machine technique field, refer specifically to a kind of bobbin thread for sewing machine detecting system and detection method.
Background technology
The pattern of modern sewing machines is various, for family and the application of various special commercial production, but ultimate principle there is no change, these sewing machines have and does the suture needle pumped with needle thread passing sewing object, interlock mutually with the bottom line done below sewing object entrained by the rotating shuttle (shuttle) rotating (waving) and moving and make sewing object shape.
At present, rotating shuttle is all in mounting base and to be positioned at below needle plate, and during sewing machine sewing fabric, user can not judge whether bottom line is finished well, and generally, user is to go to observe whether bottom line is finished with naked eyes.Owing to the person's development time is limited, when user sees that bottom line is finished, actually head of sewing machine drives eedle dry running a period of time, so can make occur that a row does not has the cavity of stitching on fabric, in turn result in phenomenon of frequently doing over again, greatly reduce sewing efficiency.If fabric is valuable leather or other precious materials, it will cause the irreversible waste of fabric.
For this, Chinese utility model patent CN104018298B discloses a kind of bobbin thread for sewing machine detection device, peg or spindle rotates and is arranged in bobbin case, first surface portion and second surface portion it is provided with on the flange of peg or spindle, the material in first surface portion is light absorptive material, the material in second surface portion is reflective material, and light absorptive material and reflective material are all pasted onto on the surface of flange.The receptor of sensor and emitter are the most just to the first surface portion exposed at loophole or second surface portion.In peg or spindle operation process, peg or spindle rubs with bobbin case, pastes the reflective material on ledge surface and light absorptive material will be scratched and even depart from, and affects the precision of bottom line detection.
Summary of the invention
In order to overcome defect of the prior art, it is an object of the invention to provide a kind of simple in construction, service life is long, it is possible to detect the bobbin thread for sewing machine line amount detection systems whether bottom line is finished in time.
The object of the present invention is achieved like this:
A kind of bobbin thread for sewing machine detecting system, the rotating shuttle that including base plate, is arranged in base plate and for controlling the electronic control module of motor, being provided with bobbin case and the peg or spindle being housed in bobbin case on described rotating shuttle, described peg or spindle includes wrapping post and arranges the flange at wrapping post two ends；Described flange is hard reflectorized material；In two flanges, at least the outer surface of a flange is provided with the rake being obliquely installed to flange outward flange, and described rake is provided with the groove concaved；Offer a loophole, described rake or groove on the outer wall of described bobbin case to expose at this loophole；Also include a sensor being fixed in base plate, this sensor includes for launching emission of light device and for receiving the receptor of light, the receptor of described sensor and emitter are the most just to the groove exposed at loophole, groove is different with the reflection ray angle of rake, groove can reflect light back in receptor, and rake then can not reflect light back into receptor；Described sensor and a signal processing module are connected, and this signal processing module is connected with electronic control module again.
Invention is further arranged to: described rake is 5 °-30 ° with the angle of the outer surface of flange.
Invention is further arranged to: the outer surface of two described flanges is provided with groove described in rake described in one and.
Invention is further arranged to: the groove on the outer surface of two described flanges is oppositely arranged.
Invention is further arranged to: described groove is provided with the outward flange in flange.
Invention is further arranged to: described wrapping post and two flanges are wholely set and in I shape, and the center of described wrapping post is provided with axis hole.
Invention is further arranged to: described receptor and emitter are integrated setting.
Invention is further arranged to: described signal processing module is integrated on a circuit board, and described circuit board is fixing on a sensor.
A kind of bobbin thread for sewing machine line quantity measuring method, including above-mentioned bobbin thread for sewing machine line amount detection systems, described bobbin thread for sewing machine line quantity measuring method comprises the following steps successively:
A, electronic control module judge whether sewing machine is in sewing state, if sewing machine is in sewing state, then carry out step B；
B, the emitter of sensor launch light to the rake exposed at loophole or groove, and the receptor of sensor only receives the groove reflection exposed at loophole transmitting light out；
C, signal processing module receive and process and export a consequential signal after the signal of transducer receivers, and electronic control module receives consequential signal and controls whether motor rotates according to consequential signal.
When the signal that transducer receivers is transferred to signal processing module is the pulse signal that is formed by high level spaced apart and low level, described consequential signal is " peg or spindle kinestate ", then electronic control module judges that bottom line is not run out and controls motor being rotated further；
When the signal that transducer receivers is transferred to signal processing module is the line signals that is formed by high level or low level, described consequential signal is " peg or spindle resting state ", then electronic control module judges that bottom line has been used up and controls motor stalls.
The present invention highlights and useful having the technical effect that compared to existing technology
In this bobbin thread for sewing machine line quantity measuring method, sensor is arranged on base plate and faces groove, therefore the receptor of sensor can receive the reflection light from groove in time, signal processing module exports a consequential signal according to the signal that the receptor of sensor is exported, i.e. export the signal whether having bottom line on a peg or spindle, electronic control module determines the need for changing peg or spindle according to consequential signal, so this detection method can be real-time, detect whether bottom line is finished in time, with the waste avoiding fabric and the frequency done over again, thus improve sewing efficiency and sewing quality.
Carry out the reflection of former road by the light realizing emitter is launched that arranges of groove simultaneously, enable a receiver to receive the reflection light from groove in time, the light that can realize launching emitter that arranges of rake reflects at an angle, makes the receptor of sensor not receive the signal reflected；So can need not reflective material or the setting of light absorptive material, decrease production process, and do not affected by the performance of reflective material or light absorptive material, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of bobbin case of the present invention；
Fig. 2 is the structural representation of peg or spindle of the present invention；
Fig. 3 is the cut-away view of peg or spindle of the present invention；
Fig. 4 is the schematic diagram of bobbin thread for sewing machine line amount detection systems in the present invention；
Fig. 5 is the flow chart of bobbin thread for sewing machine line quantity measuring method in the present invention；
The signal that when Fig. 6 is that in the present invention, bottom line is not finished, transducer receivers is exported；
The signal that when Fig. 7 is that in the present invention, bottom line is finished, transducer receivers is exported；
Fig. 8 is the schematic diagram of signal processing circuit of the present invention in the present invention.
Label implication in figure:
1-bobbin case；11-loophole；2-peg or spindle；21-flange；22-wrapping post；23-rake；24-groove；25-axis hole.
Detailed description of the invention
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings:
See shown in Fig. 1 to Fig. 8, a kind of bobbin thread for sewing machine detecting system, the rotating shuttle that including base plate, is arranged in base plate and for controlling the electronic control module of motor, being provided with bobbin case 1 and the peg or spindle 2 being housed in bobbin case 1 on described rotating shuttle, described peg or spindle 2 includes wrapping post 22 and arranges the flange 21 at wrapping post 22 two ends；Described flange 21 is hard reflectorized material；In two flanges 21, at least the outer surface of a flange 21 is provided with the rake 23 being obliquely installed to flange 21 outward flange, and described rake 23 is provided with the groove 24 concaved；Offer a loophole 11, described rake 23 or groove 24 on the outer wall of described bobbin case 1 to expose at this loophole 11；Also include a sensor being fixed in base plate, this sensor includes for launching emission of light device and for receiving the receptor of light, the receptor of described sensor and emitter are the most just to the groove 24 exposed at loophole 11, groove 24 is different with the reflection ray angle of rake 23, groove 24 can reflect light back in receptor, and rake 23 then can not reflect light back into receptor；Described sensor and a signal processing module are connected, and this signal processing module is connected with electronic control module again；The reflection of former road is carried out by the light realizing emitter is launched that arranges of groove 24, enable a receiver to receive the reflection light from groove 24 in time, the light that can realize launching emitter that arranges of rake 23 reflects at an angle, makes the receptor of sensor not receive the signal reflected；So can need not reflective material or the setting of light absorptive material, decrease production process, and do not affected by the performance of reflective material or light absorptive material, easy to use.
Being further arranged to: described rake 23 is 5 °-30 ° with the angle a of the outer surface of flange 21, be so easy to after the signaling reflex of reflector, receptor no longer receives signal, reduces the contact wear of flange 21 and bobbin case 1 simultaneously, and then improves service life；The height h of the most described rake 23 is the 1/2 of flange 21 height H；The structural strength so increasing flange 21 avoids the thickness too thin type arranging rake 23 rear flange 21 to become blade simultaneously, the line on peg or spindle 2 is caused damage, plays a protective role.
Being further arranged to: the outer surface of two described flanges 21 is provided with groove 24 described in rake 23 and described in, so can improve the speed that peg or spindle 2 is installed, without the concern for the face, place of groove 24 and rake 23 during installation, two sides is general.
It is further arranged to: the groove 24 on the outer surface of two described flanges 21 is oppositely arranged, so can reduce the centrifugal force of flange 21 when peg or spindle 2 rotates, increase the stability that peg or spindle 2 rotates.
It is further arranged to: described groove 24 is provided with in the outward flange of flange 21, and the cross section of groove 24 described in the present embodiment is minor arc, so it is easy to the installation of peg or spindle 2 and bobbin case 1, facilitates peg or spindle 2 to rotate in bobbin case 1, and the loophole 11 of bobbin case 1 need not specially arrange, it is simple to production and processing.
It is further arranged to: described wrapping post 22 and two flanges 21 are wholely set and in I shape, the center of described wrapping post 22 is provided with axis hole 25, it is made that wrapping post 22 described in the present embodiment and two flanges 21 are aluminum, so it is easy to production and processing, and aluminum lighter weight, firm in structure, reflective is good, and is easy to machine-shaping.
It is further arranged to: described receptor and emitter are integrated setting, to reduce the volume of sensor, it is simple to it is installed in the limited space of sewing machine.It addition, described receptor is an infrared remote receiver, emitter is an infrared transmitter.In the case of mounting condition allows, described receptor and emitter can also be Split type structure.
Being further arranged to: described signal processing module is integrated on a circuit board, described circuit board is fixing on a sensor.
A kind of bobbin thread for sewing machine line quantity measuring method, including above-mentioned bobbin thread for sewing machine line amount detection systems, described bobbin thread for sewing machine line quantity measuring method comprises the following steps successively:
A, electronic control module judge whether sewing machine is in sewing state, if sewing machine is in sewing state, then carry out step B；
B, the emitter of sensor launch light to the rake 23 exposed at loophole 11 or groove 24, and the receptor of sensor only receives the transmitting light that the groove 24 exposed at loophole 11 reflects；
C, signal processing module receive and process and export a consequential signal after the signal of transducer receivers, and electronic control module receives consequential signal and controls whether motor rotates according to consequential signal.
When the signal that transducer receivers is transferred to signal processing module is the pulse signal that is formed by high level spaced apart and low level, described consequential signal is " peg or spindle 2 kinestate ", then electronic control module judges that bottom line is not run out and controls motor being rotated further；
When the signal that transducer receivers is transferred to signal processing module is the line signals that is formed by high level or low level, described consequential signal is " peg or spindle 2 resting state ", then electronic control module judges that bottom line has been used up and controls motor stalls.
Sewing machine is in sewing process, if the bottom line being wound around on peg or spindle 2 is not finished, then upper thread and bottom line has interweaved sewing work and on fabric formation stitching, now, bottom line is under the traction of upper thread, and bottom line pulls peg or spindle 2 to rotate, i.e. peg or spindle 2 is in kinestate；If the bottom line being wound around on peg or spindle 2 has been used up, be then equivalent to bottom line and depart from peg or spindle 2, therefore bottom line no longer pulls peg or spindle 2 to rotate, i.e. peg or spindle 2 is in resting state.So in the bobbin thread for sewing machine line amount detection systems that the present invention relates to and detection method, whether the bottom line judged on peg or spindle 2 by judging peg or spindle 2 whether to be kept in motion or whether remain static in sewing process is finished.Specifically, in sewing process, sensor is continuously facing to the peg or spindle 2 surface emitting light signal exposed at loophole 11, if the bottom line on peg or spindle 2 is not run out, then peg or spindle 2 is in kinestate, now, rake 23 and groove 24 are continuously spaced in loophole 11 and pass through, owing to rake 23 is different to the reflection angle of the light that sensor transmitter is launched with groove 24, groove 24 can reflect light back into and make receptor receive, light is reflexed to another angle by rake 23, receptor is made not receive, therefore the light that transducer receivers receives is in having, nothing, have, nothing ... rule, so the final output signal of sensor is a pulse signal；If peg or spindle 2 is in resting state, now, that now exposes at loophole 11 is only groove 24 or rake 23, thus the light that receives of transducer receivers be with or without light, so the final output signal of sensor is a line signals.Signal processing module receives and processes the signal from transducer receivers, and according to whether whether for pulse signal or be that line signals exports a consequential signal, the consequential signal that automatically controlled template exports according to signal processing template controls motor the need of shutdown.
In above-mentioned bottom line line amount detection systems and detection method, the emitter of sensor and receptor face the groove 24 exposed at the loophole 11 of bobbin case 1, the ability that sensor and groove 24 cooperate is good, sensor can receive the light reflected by groove 24 in time and positively, its response speed is fast, highly sensitive, automatically controlled template can control motor stalls within the very first time that bottom line is finished, sewing machine is made to stop sewing, to change bottom line in time, thus ensure that not havinging a row on fabric does not has the cavity of stitching, and then it is substantially reduced because finding that bottom line is finished and doing over again of causing the most in time, the phenomenon of fabric waste, final guarantee sewing efficiency and sewing quality.
Preferably, the number of turns of peg or spindle 2 motion can also be set by user in advance, and when the motion number of turns of peg or spindle 2 goes to setting value, sewing machine is to also stop motion after its tangent line.For Zhun Que, can be set the number of turns of peg or spindle 2 in advance, sewing machine is in sewing process, and bottom line is under the traction of upper thread, and bottom line pulls peg or spindle 2 to rotate, i.e. peg or spindle 2 is in kinestate；Specifically, in sewing process, sensor is continuously facing to the peg or spindle 2 surface emitting light signal exposed at loophole 11, now, rake 23 and groove 24 are continuously spaced in loophole 11 and pass through, owing to rake 23 is different to the reflection angle of the light that sensor transmitter is launched with groove 24, groove 24 can reflect light back into and make receptor receive, light is reflexed to another angle by rake 23, receptor is made not receive, therefore the light that transducer receivers receives is in having, nothing, have, nothing ... rule, have to a cycle of doing nothing, or without to a promising cycle, one cycle was a circle of peg or spindle；Signal processing module receives and processes the signal from transducer receivers, and when the number of turns value that the signal that signal processing module receives sets with peg or spindle is consistent, the consequential signal that automatically controlled template exports according to signal processing template controls motor stopping.
Preferably, as shown in Figure 8, described signal processing module includes amplifying circuit template, filter plate conditioning circuit module and processor module, and the signal that sensor is finally gathered belongs to small and weak signal, and this amplified circuit module of small and weak signal is an enhancing signal after being amplified；Filtering conditioning circuit module receives from the enhancing signal of amplifying circuit template, and is filtered enhancing signal processing so that the waveform of output is highly stable pure, is beneficial to improve subsequent processor to the accuracy of signal processing and reliability；Processor receives the signal from filtering modulate circuit template, and whether be pulse signal to this signal or whether be to export a consequential signal after line signals judges, further according to this consequential signal, electronic control module controls whether motor operates, i.e. control whether sewing machine stops also being whether to work on.
Additionally, in the bobbin thread for sewing machine line quantity measuring method that the present invention relates to, as shown in Figure 5, signal processing module is sewing machine sewing to be in state to the premise that the signal of sensor acquisition processes, if the processor in signal processing module judges that sewing machine is carrying out sewing work, then send pwm signal, to drive working sensor, the sensor signal returned is carried out real-time sampling judgement simultaneously, then export one and think that peg or spindle 2 is in the consequential signal of kinestate or resting state；In Fig. 5, output result signal 1 is the consequential signal of " peg or spindle kinestate ", and output result signal 2 is the " consequential signal of peg or spindle resting state.
Above-described embodiment is only presently preferred embodiments of the present invention, limits the scope of the invention the most according to this, therefore: the equivalence change that all structures under this invention, shape, principle are done, within protection scope of the present invention all should being covered by.
Claims (10)
1. a bobbin thread for sewing machine detecting system, the rotating shuttle including base plate, being arranged in base plate and for
Control the electronic control module of motor, described rotating shuttle is provided with bobbin case and the peg or spindle being housed in bobbin case, described
Peg or spindle includes wrapping post and arranges the flange at wrapping post two ends；It is characterized in that: described flange is that hard is reflective
Material；In two flanges, at least the outer surface of a flange is provided with and is obliquely installed to flange outward flange
Rake, described rake is provided with the groove concaved；A printing opacity is offered on the outer wall of described bobbin case
Hole, described rake or groove expose at this loophole；Also include a sensor being fixed in base plate,
This sensor includes for launching emission of light device and for receiving the receptor of light, described sensor
Receptor and emitter the most just reflection ray angle to the groove exposed at loophole, groove and rake
Difference, groove can reflect light back in receptor, and rake then can not reflect light back into receptor；Institute
Stating sensor and a signal processing module is connected, this signal processing module is connected with electronic control module again.
A kind of bobbin thread for sewing machine detecting system the most according to claim 1, it is characterised in that incline described in:
Tiltedly portion is 5 °-30 ° with the angle of the outer surface of flange.
A kind of bobbin thread for sewing machine detecting system the most according to claim 1 and 2, it is characterised in that: two
The outer surface of individual described flange is provided with groove described in rake described in one and.
A kind of bobbin thread for sewing machine detecting system the most according to claim 3, it is characterised in that: two institutes
The groove stated on the outer surface of flange is oppositely arranged.
5. according to a kind of bobbin thread for sewing machine detecting system described in claim 1 or 2 or 4, it is characterised in that:
Described groove is provided with the outward flange in flange.
6. according to a kind of bobbin thread for sewing machine detecting system described in claim 1 or 2 or 4, it is characterised in that:
Described wrapping post and two flanges are wholely set and in I shape, and the center of described wrapping post is provided with axis hole.
7. according to a kind of bobbin thread for sewing machine detecting system described in claim 1 or 2 or 4, it is characterised in that:
Described receptor and emitter are integrated setting.
A kind of bobbin thread for sewing machine detecting system the most according to claim 7, it is characterised in that: described letter
Number processing module is integrated on a circuit board, and described circuit board is fixing on a sensor.
9. a bobbin thread for sewing machine line quantity measuring method, it is characterised in that: include as claim 1 or 2 or
Bobbin thread for sewing machine line amount detection systems described in 4 or 8, described bobbin thread for sewing machine line quantity measuring method includes successively
Following steps:
A, electronic control module judge whether sewing machine is in sewing state, if sewing machine is in sewing state, then enter
Row step B；
B, the emitter of sensor launch light to the rake exposed at loophole or groove, sensor
Receptor only receives the groove reflection exposed at loophole transmitting light out；
C, signal processing module receive and process and export a consequential signal after the signal of transducer receivers,
Electronic control module receives consequential signal and controls whether motor rotates according to consequential signal.
A kind of bobbin thread for sewing machine line quantity measuring method the most according to claim 9, it is characterised in that:
It is one by high level spaced apart and low level when transducer receivers is transferred to the signal of signal processing module
During the pulse signal formed, described consequential signal is " peg or spindle kinestate ", then electronic control module judges bottom line
It is not run out and controls motor being rotated further；
It is one to be formed by high level or low level when transducer receivers is transferred to the signal of signal processing module
During line signals, described consequential signal is " peg or spindle resting state ", then electronic control module judge bottom line have been used up,
And control motor stalls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610446174.XA CN105887371B (en) | 2016-06-17 | 2016-06-17 | Sewing machine bottom line detection system and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610446174.XA CN105887371B (en) | 2016-06-17 | 2016-06-17 | Sewing machine bottom line detection system and detection method |
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| Publication Number | Publication Date |
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| CN105887371A true CN105887371A (en) | 2016-08-24 |
| CN105887371B CN105887371B (en) | 2023-02-28 |
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| CN201610446174.XA Active CN105887371B (en) | 2016-06-17 | 2016-06-17 | Sewing machine bottom line detection system and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151873A (en) * | 2017-07-12 | 2017-09-12 | 杰克缝纫机股份有限公司 | Bottom line detection method, system, device and control device for industrial sewing machine |
| CN107099949B (en) * | 2017-05-25 | 2022-11-18 | 杭州琦星机器人科技有限公司 | Bobbin thread detection device, bobbin thread detection method, and sewing machine |
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| Publication number | Publication date |
|---|---|
| CN105887371B (en) | 2023-02-28 |
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