CN101290522A - Embroidery machine failure self-diagnosis device and its method - Google Patents
Embroidery machine failure self-diagnosis device and its method Download PDFInfo
- Publication number
- CN101290522A CN101290522A CNA2008100937358A CN200810093735A CN101290522A CN 101290522 A CN101290522 A CN 101290522A CN A2008100937358 A CNA2008100937358 A CN A2008100937358A CN 200810093735 A CN200810093735 A CN 200810093735A CN 101290522 A CN101290522 A CN 101290522A
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- Prior art keywords
- fault
- mentioned
- embroidery
- embroidery machine
- control part
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C5/00—Embroidering machines with arrangements for automatic control of a series of individual steps
- D05C5/02—Embroidering machines with arrangements for automatic control of a series of individual steps by electrical or magnetic control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C13/00—Auxiliary devices incorporated in embroidering machines, not otherwise provided for; Ancillary apparatus for use with embroidering machines
- D05C13/02—Counting, measuring, indicating, warning, or safety devices
Abstract
This invention is related to fault auto-diagnosis device of embroidery machine and method thereof, especially a device capable of detecting out the fault of each functional part, including: a table part that records the occurred fault of each functional part of the embroidery machine and manages the original fault information in the mode of table when plural faults are occurred at the same time and provides the information through an index mode; a control part that indexes the table part based on the detected fault and confirms the original fault causing said fault, and displays, controls and monitors the detected fault and the indexed original fault; a fault display part that monitors the running state of each functional part under controlled by the control part and detects the fault information of the functional part with the fault; and a display part that is accessed to the control part and display the detected fault and the indexed original fault. Detecting out the original fault of the combined fault by the mode of auto-diagnosis, this invention is able to save the maintenance time and cost and improve the running rate.
Description
Technical field
The present invention relates to a kind ofly be shown after when embroidery machine simultaneously a plurality of fault takes place, can confirming all faults of being taken place and checking out primary fault, especially can analyze back retrieval table portion and check out the failure self-diagnosis device and the method thereof of the embroidery machine that is shown after the primary fault by the autodiagnosis mode a plurality of faults that retrieval is come out by the autodiagnosis mode.
Background technology
Embroidery machine uses sewing machine to produce the embroidery with selected layout automatically with a plurality of embroidery yarns.On single embroidery head, be equipped with the different a plurality of embroidery yarns of color, select to have the embroidery yarn of designated color, the thorn tabouret of having fixed fabric or tabouret portion are being sewed after the handover on the XY coordinate two dimensional surface quickly and accurately by the mode that drives single axle.Therefore not only need critically drive, also need aspect electronics, control exactly and its result be monitored in mechanical aspects.
The embroidery head of embroidery machine possesses 6 to 12 needle stands usually, puts on embroidery yarn with designated color on the pin of each needle stand respectively and is driven by selected needle stand, embroiders on the fabric that is fixed in tabouret portion then.As an embodiment, can possess on the embroidery machine more than 2 to 48 embroidery heads and by single line shaft and drive and enhance productivity.Each embroidery head is equipped with tabouret portion separately, and tabouret portion is in order to have possessed the driving motor that can drive on X-axis and Y-axis transferring on the two dimensional surface.
Need to monitor that the running status of each function portion of above-mentioned embroidery machine is so that it is able to normal operation, break down (trouble) or during wrong (error) (hereinafter to be referred as " fault "), need the record record and manage the state of above-mentioned fault, the staff checks and shows (display) and send alarm (alarm) signal with numeral, message (Message), light or sound modes such as (audio) for convenience then.
Single failure can have influence on other function portion usually and cause combined failure, if can't find out the reason of above-mentioned combined failure, just need keep in repair repeatedly to find out reason.
The general embroidery machine 10 of one embodiment of the invention shown in Figure 1 comprises: a plurality of tension portion 30 are equipped with a plurality of embroidery yarns and according to certain tension force supply at upside; A plurality of embroidery heads 20 have and can be through the embroidery yarn from tension portion respectively the needle stand portion 40 of making operation on the corresponding pin; And a plurality of tabouret portion 50, in view of the tambour needle of needle stand portion moves up and down, the fabric cloth is transplanted on after fixing specifies the XY coordinate to embroider.
As an embodiment, the head 20 of respectively embroidering of embroidery machine shown in the accompanying drawing 10 uses 12 embroidery yarns and 12 needle stand portions 40 to produce embroidery.Tabouret 50 is subjected to the driving of X-axis and Y-axis stepping motor (stepmotor) (not shown), therefore can freely transfer by control corresponding on two dimensional surface.
The general multiheaded embroidery machine structure of one embodiment of the invention is described below in conjunction with Fig. 2.On a line shaft of fixed station 60 inside, connect a plurality of embroidery heads 20 and drive simultaneously in same mode.That is to say that multiheaded embroidery machine 10 can utilize a plurality of embroidery heads 20 to produce the embroidery of same layout simultaneously, therefore can enhance productivity.Yet, as long as a certain function portion that constitutes in the allomeric function portion of multiheaded embroidery machine 10 breaks down, will end the operation of whole multiheaded embroidery machine 10, could move after fixing a breakdown.
That is to say, embroidery machine 10 has a lot of function portion, for example 5V power supply unit, 12V power supply unit, 24V power supply unit, X-axis drive division, X-axis driver, Y-axis drive division, Y-axis driver, sewing machine electromotor portion, needle stand drive division, tension adjustment portion, disconnection portion and comprise that line cuts off the various sensor part of test section etc.When the portion of function in a certain respect in each function portion breaks down, will impact other function portion and combined failure takes place.
When embroidery machine can't normally move, generally all can detect the function portion that breaks down and be shown that skilled maintenance personal can predict failure symptom by show state, and then is fixed a breakdown apace.Yet if the combined failure that causes owing to the fault of other function portion, just must find out as the fault of its source or reason and got rid of, even otherwise got rid of the above-mentioned fault that is shown and also can continue to show other fault.Even got rid of shown above-mentioned fault then, but still show other fault and this repetitive process continuously.
The embroidery machine fault detect and the method for removing thereof of prior art are described below in conjunction with Fig. 3.If the control part of control and supervision embroidery machine overall operation has confirmed that embroidery machine brings into operation (S10), activate and control each function portion, begin the operation (S20) that loads layout and confirm initial point and so on.Then by beginning to produce embroidery (S30) behind operating personnel's input of control commands.
The control part of embroidery machine monitors the running status of each function portion, when detecting the fault of operation exception (S40), is presented on the corresponding display part detecting out of order function portion, and sends alarm signal and give operating personnel (S50) signalling trouble.
Operating personnel have confirmed to take measures to fix a breakdown after above-mentioned fault demonstration and the warning content, and control part then checks whether got rid of shown fault (S60).When having got rid of shown fault, confirm whether detect other fault (S70) again, when detecting other fault, get back to the step (S50) that shows above-mentioned fault and send alarm signal, always till the fault that has taken place to eliminating repeatedly.
If control part confirms not detect other fault, check then whether embroidery production finishes (S80), embroidery is produced to finish and is then finished.
Embroidery machine fault detect and method for removing thereof with prior art of said structure need to show one by one the fault that is taken place, after having got rid of shown fault, detect other fault and demonstration again again, owing to need carry out above-mentioned steps repeatedly, the needed servicing time of therefore fixing a breakdown fully is very long.
And, need drop into the maintenance personal repeatedly in order to get rid of the fault that takes place on the same embroidery machine, not only the waste of manpower cost also increases other expense.
Summary of the invention
[technical matters that will solve]
The purpose of this invention is to provide a kind of can detect all faults of taking place on the embroidery machine and analyze by the autodiagnosis mode after demonstrate failure cause and finished maintenance job once, can go out primary fault and finish the failure self-diagnosis device and the method thereof of the embroidery machine of maintenance job once by tabular analysis when a plurality of fault especially takes place simultaneously because of combined failure.
[technical scheme]
To achieve these goals, the apparatus of the present invention that can detect each function portion fault of embroidery machine comprise the following units: form portion, the fault that each function portion of record embroidery machine is taken place, the primary fault information when simultaneously a plurality of fault taking place with the forms mode management also can provide this information by retrieval mode; The primary fault of above-mentioned fault is retrieved and confirmed to cause to control part according to the fault that detects to form portion, and the primary fault of coming out for detected fault and retrieval shows, controls and monitors processing; Fault detect portion monitors the running status of each function portion of embroidery machine under the control of control part, detect for the failure message of the function portion that fault has taken place; And display part, Access Control portion and the primary fault that fault that is detected and retrieval are come out are shown.
To achieve these goals, after the inventive method that can detect each function portion fault of embroidery machine comprises the following steps: to have confirmed that by the control part of embroidery machine embroidery machine has brought into operation, each function portion is controlled and produce embroidery, confirm whether to detect the detection step of fault; End embroidery production and detect all faults that each function portion is taken place after detecting fault, the step that post analysis primary fault is also confirmed is retrieved by form portion; And detected fault and the primary fault of check shown and sent alarm signal that the step of embroidery is continued to produce in the back of fixing a breakdown.
[invention effect]
When the present invention with said structure on embroidery machine the combined failure of a plurality of faults takes place simultaneously, can retrieve and analyze, confirm primary fault by the autodiagnosis mode then and shown, thereby can finish maintenance apace form portion.
Owing to can confirm the primary fault of the combined failure that takes place on the embroidery machine apace and shown by the autodiagnosis mode, therefore can reduce servicing time and cost, improve the running rate of embroidery machine, promote embroidery production efficiency.
Description of drawings
Fig. 1 is the structure key diagram of the general embroidery machine of one embodiment of the invention;
Fig. 2 is the structure key diagram of the general multiheaded embroidery machine of one embodiment of the invention;
Fig. 3 is the fault detect of embroidery machine of prior art and the process flow diagram of method for removing thereof;
Fig. 4 is the functional structure chart of failure self-diagnosis device of the embroidery machine of one embodiment of the invention;
Fig. 5 is the process flow diagram of failure self-diagnostic method of the embroidery machine of one embodiment of the invention;
Fig. 6 is failure self-diagnosis result's the show state figure of the embroidery machine of one embodiment of the invention.
The explanation of the main symbol of＜figure 〉
100: form portion 110: control part
120: fault detect portion 130: display part
140: panel part 150: portion of function group
Symbol among Fig. 3 and Fig. 5 " Y " and " N " represent "Yes" and "No" respectively.
Embodiment
Be described further below in conjunction with the failure self-diagnosis device and the method thereof of accompanying drawing embroidery machine of the present invention with said structure.
In accompanying drawing of the present invention, Fig. 4 is the functional structure chart of failure self-diagnosis device of the embroidery machine of one embodiment of the invention; Fig. 5 is the process flow diagram of failure self-diagnostic method of the embroidery machine of one embodiment of the invention; Fig. 6 is failure self-diagnosis result's the show state figure of the embroidery machine of one embodiment of the invention.
In order clearly and clearly to give expression to main idea of the present invention, will when explanation preferred embodiment of the present invention, omit the technology contents that those and the present invention are not directly correlated and are widely known by the people.
The failure self-diagnosis device of the embroidery machine of one embodiment of the invention shown in Figure 4 comprises the following units: form portion 100; Control part 110; Fault detect portion 120; Display part 130; Panel part 140 inserts the movement command signal that above-mentioned control part also can be imported embroidery machine; And portion of function group 150, comprise by above-mentioned control part controlling and driving and produce a plurality of function portion of embroidery.
Be described further below in conjunction with the failure self-diagnosis device of accompanying drawing embroidery machine of the present invention.Form portion 100 has write down in advance by skilled maintenance personal or all contingent failure mode information and corresponding sequence numbers that personnel confirmed such as researcher or designer.And, may influence other function portion when a certain fault takes place and the kind that breaks down simultaneously flocks together and managed, and this primary fault and the combined failure of following its generation are shown and management.
Following form is the embodiment of failure logging in form portion 100 with forms mode.
Form example 1
| Sequence number | The fault content | Sequence number | The fault content |
| #100 | Fault location | #204 | The X driver malfunction |
| #300 | The needle stand position failure | #304 | The Y driver malfunction |
| #400 | Encoder fault | #500 | + 5V fault |
| #510 | -5V fault | #520 | + 12V fault |
| #530 | + 24V fault | ..... | ..... |
Write down contingent various fault shown in embroidery machine is as above shown and utilized sequence number that contingent all faults are managed.For example, fault when the tabouret portion of portion of formation function group 150 does not move to the location is recorded into sequence number #100 and manages, the fault of not moving according to normal upper-lower position when needle stand moves up and down is recorded into sequence number #300 and manages, and the fault when the Y driver is failure to actuate then is recorded into sequence number #304 and manages.
The present invention is write down and is managed with the inventory of the combined failure that forms mode and then occurs when primary fault takes place, and following form is an embodiment of primary fault management.
Form example 2
| Primary fault | Combined failure | Primary fault | Combined failure |
| + 5V power fail | #400 | The scrambler mistake | #100 |
| #204 | #300 | ||
| #304 | The location mistake | #204 | |
| .... | #304 |
In other words, a variety of primary faults can take place in embroidery machine, and above-mentioned primary fault will cause correlation function portion to make a mistake and the combined failure that the operation exception phenomenon occurs or stop to move.The combined failure of following above-mentioned primary fault and coming can be designed personnel usually or skilled maintenance personal predicts in advance, therefore can be write down and manage by forms mode.
As an example, if+5V power supply unit (#510) breaks down, because a plurality of function portion of encoder functionality portion (#400) and X driver functions portion (#204) and Y driver functions portion (#304) that comprises can't accept run power supply or all action powers, the fault (trouble) that can't move or mistake (error) that can't regular event therefore will take place.At this moment ,+5V power supply unit (#510) fault is a primary fault, comprises that the simultaneous fault of corresponding function portion of encoder functionality portion (#400), X driver functions portion (#204) and Y driver functions portion (#304) is a combined failure.
As another example, if primary fault is encoder fault (#400), combined failure will be fault location (#100) and needle stand position failure (#300); If primary fault is fault location (#100), combined failure will be X driver functions portion fault (#204) and Y driver functions portion fault (#304).
That is to say, the a plurality of function portion of embroidery machine breaks down and when being detected simultaneously, can autodiagnosis goes out primary fault by above table portion is retrieved, can promptly confirm the content of primary fault and keep in repair, therefore can save maintenance cost, increase the working time of embroidery machine, improve running rate, promote the production efficiency of embroidery.
As an example, in the step of controlling at each the function portion that constitutes portion of function group 150 and monitoring, if control part 110 is confirmed to have imported the layout of the selected embroidery of loading (loading) and the control command of production embroidery from panel part 140, to control each the function portion that constitutes portion of function group 150 so that it is carried out relevant run action and is monitored, thus the embroidery that can produce the layout that loads.At this moment, whether control part 110 normally moves each function portion of control fault test section 120 and portion of inspection formation function group 150 and action.Fault detect portion 120 is by being configured in a certain sensor in each the function portion that constitutes portion of function group 150 and being out of order or when some data that a certain function portion is exported being carried out periodic analysis and detect fault, just portion of function group 150 is controlled and receive all failure messages that each function portion provides, analyze then and the inventory of all failure messages that retrieval is come out is notified to control part 110.
After control part 110 is received all failure messages that fault detect portion 120 retrieves out, portion of function group 150 is controlled and ends embroidery production, utilize a plurality of failure messages retrieve out that form portion 100 is retrieved and analyzes then, thereby autodiagnosis (self-diagnostic) have primary fault and confirm the sequence number of this fault.
Control part 110 is to comprise the failure message that numeral is confirmed above-mentioned process in interior message (Message), be that a plurality of failure messages and the analysis form portion 100 back primary fault information of checking out by the autodiagnosis mode that fault detect portion 120 detects are presented on the display part 130, and send and comprise sound and light etc., thereby operating personnel are discerned in interior alarm signal.
The failure self-diagnostic method of the embroidery machine of one embodiment of the invention shown in Figure 5 comprises the following steps: to produce the step of embroidery and detection failure; Confirm the step of primary fault by form portion; And the primary fault that detected fault and inspection are come out is shown that the step of embroidery is continued to produce in the back of fixing a breakdown.
Be described further below in conjunction with the failure self-diagnostic method of accompanying drawing embroidery machine of the present invention.Control part 110 is confirmed when panel part 140 has been imported control command with the embroidery of the selected layout of embroidery machine production (S100), just each the function portion that constitutes portion of function group 150 is controlled and make it produce the embroidery of above-mentioned selected layout, monitor (S110) simultaneously.
Control part can control fault test section 120, whether therefore can monitor each the function portion that constitutes portion of function group 150 in the embroidery machine normally moves, whether be subjected to comprising the fault effects of mistake and abnormal operation, that can also confirm to check out is which fault (S120).After detecting fault and being confirmed, portion of function group controlled to end embroidery produce (S130), fault detect portion is transferred to control part (S140) after then all faults of portion of function group 150 generations being detected.
Control part is retrieved form portion 100 after receiving a plurality of failure messages that fault detect portion retrieves out, analyzing also at a plurality of faults then, autodiagnosis goes out primary fault (S150), a plurality of failure messages of then display part 130 being controlled and retrieval being come out and shown (display) by the primary fault information that the autodiagnosis mode is checked out send alarm (alarm) (S160) simultaneously.
Control part can control fault test section and portion of function for monitoring group 150, check simultaneously whether the fault that has taken place is passed through associative operation personnel's adequate measure and got rid of (S170), if confirm to have got rid of all faults, just order about portion of function group 150 and restart to produce embroidery (S180), (S190) finished in the embroidery production of the confirming above-mentioned selected layout back that finishes.
Below in conjunction with Fig. 6 to the failure self-diagnosis of the embroidery machine of one embodiment of the invention as a result show state be described further.
The left side of Fig. 6 is the prior art that fault of one-time detection is also shown, the right side is one embodiment of the invention, detected fault all is shown as inventory (LIST), is confirmed after the above-mentioned combined failure that comes out is analyzed or demonstrate to pass through the primary fault of classifying to retrieving by the autodiagnosis mode.
As an example, when the 12V of power supply unit broke down, foreseeable combined failure was #100, #204, #300 and #304 or the like.
That is to say, even prior art has been got rid of the fault of picture #100 and so on, also can detect the fault of #204 again and is shown after with its eliminating, therefore need to continue maintenance activity and lose time and raise the cost, and then reduction production efficiency.The present invention but can detect all combined failures that taken place and be shown, after form portion is retrieved and analyzes, points out that in autodiagnosis (self-diagnostic) mode the primary fault that possible primary fault or process are confirmed is the 12V power fail.
Therefore, when embroidery machine generation combined failure, the present invention analyzes after can retrieval table portion and confirms primary fault and with it demonstration and alarm, the maintenance personal be fixed a breakdown quickly and accurately and restarts to produce and embroider, thereby has improved running rate by the autodiagnosis mode.
Preamble is for example understood technological thought of the present invention, but in technological thought category of the present invention, various distortion and modification can occur, and this is very tangible same industry personage.Therefore, the embodiment of this instructions only can not limit technological thought of the present invention for explanation, the real interest field of the present invention should determine according to following claim scope, and the technological thought in its equivalence range also should be included in the interest field of the present invention.
Claims (7)
1. the failure self-diagnosis device of an embroidery machine can detect each function portion fault of embroidery machine, and it comprises:
Form portion writes down the fault that each function portion of above-mentioned embroidery machine is taken place, and the primary fault information when simultaneously a plurality of fault taking place with the forms mode management also can provide this information by retrieval mode;
The primary fault of above-mentioned fault is retrieved and confirmed to cause to control part according to the fault that detects to above table portion, and the primary fault of coming out for detected fault and retrieval shows, controls and monitors processing;
Fault detect portion monitors the running status of each function portion of embroidery machine under the control of above-mentioned control part, detect for the failure message of the function portion that fault has taken place; And
Display part inserts above-mentioned control part and primary fault that fault that is detected and retrieval are come out is shown.
2. the failure self-diagnosis device of embroidery machine according to claim 1 is characterized by:
Comprise in addition: panel part, insert the movement command signal that above-mentioned control part also can be imported embroidery machine; And portion of function group, comprise by control of above-mentioned control part and a plurality of function portion that drives and produce embroidery.
3. according to the failure self-diagnosis device of any one described embroidery machine of claim 1 or claim 2, it is characterized by:
Portion of above-mentioned functions group is driven by the control signal of above-mentioned control part, provides fault generation state according to the request of above-mentioned fault detect portion,
Above-mentioned display part selected more than one expression way in sound message, sound and light is shown the fault generation state that detects and process is confirmed.
4. according to the failure self-diagnosis device of any one described embroidery machine of claim 1 or claim 2, it is characterized by:
Selecting more than one detection method in corresponding sensor and data analysis after, above-mentioned fault detect portion detects the fault generation state of each function portion of portion of formation above-mentioned functions group.
5. the failure self-diagnostic method of an embroidery machine can detect the fault of each function portion of embroidery machine, comprises the following steps:
After above-mentioned control part by embroidery machine has confirmed that embroidery machine has brought into operation, each function portion is controlled and produce embroidery, confirm whether to detect the detection step of fault;
Above-mentioned detecting ended embroidery after the fault and produced and detect all faults that each function portion is taken place, the step that form portion is retrieved post analysis primary fault and confirmed; And
Above-mentioned detected fault and the primary fault of check shown and sent alarm signal that the step of embroidery is continued to produce in the back of fixing a breakdown.
6. the failure self-diagnostic method of embroidery machine according to claim 5 is characterized by:
Above-mentioned affirmation step comprises:
When confirming to have detected fault, ends above-mentioned control part the step that embroidery is produced;
Above-mentioned control part is ended embroidery and is produced each function portion that also monitors, the step that detects and write down at all faults that taken place; And
Use detected above-mentioned trouble-locating form portion, analyze and confirm the step of primary fault.
7. the failure self-diagnostic method of embroidery machine according to claim 5 is characterized by:
The step that above-mentioned continuation is produced comprises:
All faults of under the control of above-mentioned control part retrieval being come out are shown and are sent the step of alarm with checking the primary fault of coming out;
Check whether to have got rid of shown above-mentioned fault of coming out fully, if do not get rid of fully then get back to the step of above-mentioned affirmation step;
Shown above-mentioned fault of coming out all get rid of finish after, restart to produce the step of embroidery; And
Check whether to have finished above-mentioned embroidery production, if do not finish then get back to the step of above-mentioned detection step.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0038440 | 2007-04-19 | ||
| KR1020070038440A KR101412980B1 (en) | 2007-04-19 | 2007-04-19 | Method and apparatus of self diagnostic related trouble for embroidery machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101290522A true CN101290522A (en) | 2008-10-22 |
Family
ID=40034813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100937358A Pending CN101290522A (en) | 2007-04-19 | 2008-04-16 | Embroidery machine failure self-diagnosis device and its method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101412980B1 (en) |
| CN (1) | CN101290522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574591A (en) * | 2017-10-13 | 2018-01-12 | 杰克缝纫机股份有限公司 | Sewing machine failure modification method and sewing-machine control systems |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940005364B1 (en) * | 1992-02-11 | 1994-06-17 | 이덕문 | Controller system for sewing machine |
| JPH08112482A (en) * | 1994-10-19 | 1996-05-07 | Janome Sewing Mach Co Ltd | Sewing machine equipped with alarm indicating function |
| KR20040021137A (en) * | 2002-09-02 | 2004-03-10 | 썬스타 특수정밀 주식회사 | Method of generation warning sound and sound message of function by counties of automatic embroidery apparatus and apparatus of thereof |
-
2007
- 2007-04-19 KR KR1020070038440A patent/KR101412980B1/en not_active IP Right Cessation
-
2008
- 2008-04-16 CN CNA2008100937358A patent/CN101290522A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574591A (en) * | 2017-10-13 | 2018-01-12 | 杰克缝纫机股份有限公司 | Sewing machine failure modification method and sewing-machine control systems |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080094262A (en) | 2008-10-23 |
| KR101412980B1 (en) | 2014-06-27 |
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Open date: 20081022 |