CN201265088Y - Ground thread detection device of computer embroidery machine - Google Patents
Ground thread detection device of computer embroidery machine Download PDFInfo
- Publication number
- CN201265088Y CN201265088Y CNU2008201372374U CN200820137237U CN201265088Y CN 201265088 Y CN201265088 Y CN 201265088Y CN U2008201372374 U CNU2008201372374 U CN U2008201372374U CN 200820137237 U CN200820137237 U CN 200820137237U CN 201265088 Y CN201265088 Y CN 201265088Y
- Authority
- CN
- China
- Prior art keywords
- detection contact
- spring
- upper thread
- yarn take
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to a ground thread detection device of a computerized embroidery machine. In the technical proposal, an upper thread detection contact is arranged above the yarn take-up spring of a thread clipping holder; a ground thread detection contact is arranged below the yarn take-up spring; and the upper thread detection contact and the ground thread detection contact are respectively connected with a breakage alarm circuit electrically, so as to transmit the signals of the electrical connection between the upper thread detection contact and the yarn take-up spring, and between the ground thread detection and the yarn take-up spring to the breakage alarm circuit. The utility model can judge the breakage according to the movement range of the yarn take-up spring on the thread clipping holder: when the movement range of the yarn take-up spring reaches the maximum value, the computerized embroidery machine is judged to normally operate; when the movement range of the yarn take-up spring is zero, the upper thread is broken according to the judgment; and when the movement range of the yarn take-up spring is between the maximum value and the minimum value, the upper thread is not broken, but the ground thread is broken, in accordance with the judgment. The utility model has the advantages of high sensitivity, simple structure, easy processing and installation, low requirements, low cost for electrical control and reliable operation, and can distinguish whether the upper thread or the ground thread is broken.
Description
Technical field
The utility model belongs to embroidery machine, is specifically related to a kind of bottom line checkout gear of computer embroidering machine.
Background technology
In the computer embroidering machine, burn out detection is an important function.It mainly is to be used for detecting in the embroidery process whether upper thread and the generation of bottom line broken string situation are arranged, in case the broken string situation takes place, the horse back alarm.
Existing computer embroidering machine majority all has the upper thread measuring ability, its main method is to judge upper thread by the yarn take-up spring on the tension seat, yarn take-up spring can be depressed after hanging up upper thread, meeting elastic reset when upper thread has broken, so the existing equipment majority is that copper post contact is set above yarn take-up spring, in case detect the contact that yarn take-up spring has contacted the top, promptly judge upper thread broken (referring to Fig. 1).
The judgement of bottom line broken string is then relatively more difficult, and the equipment that has does not have the bottom line measuring ability; Some major parts that are provided with the bottom line measuring ability are to adopt grating wheel pulse detection mode.
For example the CN00236684.3 patent disclosure following content: cross on the line drawing lines at upper thread, increase reel and choping wheel, reel and choping wheel synchronous interaction, to wear around reel when wearing upper thread, upper thread promptly is being with reel and choping wheel to rotate when pulled, choping wheel is installed in the optocoupler groove of correspondence of bottom line check-out console, and the rotation by choping wheel makes optocoupler produce pulse output, realizes that by processing of circuit bottom line detects.When normally embroidering, the upper thread band choping wheel and is rotated faster, and the continuous impulse that optocoupler produces is more, and when not having bottom line, the upper thread rotating speed reduces, and the continuous impulse that optocoupler produces also reduces, and lacks to a certain degree promptly being judged as bottom line to break, and there is following deficiency in this method:
1, sensitivity is not high, in some cases, though there has not been bottom line, but because the pin band the upper thread motion, upper thread still detects the reel of usefulness in rotation with bottom line, so choping wheel rotates too, make that the optocoupler output pulse on the bottom line check-out console is almost constant, then whether the bottom line check-out console can't detect bottom line and break;
2, can't distinguish bottom line still is that upper thread breaks; ,
3, the associated mechanical processing request is higher, installs cumbersome.
If 4, the reel rotation has some setbacks or do not change, can influence disconnected inspection warning function.
5, adopt the bottom line check-out console, because all corresponding optocoupler in each pin position, automatically controlled cost is higher
6, the processing cost of reel is than higher.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned deficiency, provides that a kind of highly sensitive, accommodation is big, good reliability, can to distinguish bottom line still be that the bottom thread of computer embroidering machine checkout gear simple, that cost is low is installed in upper thread broken string and processing.
The technical scheme that addresses the above problem is: the upper thread detection contact (1) that is provided with conduction in yarn take-up spring (2) top of computer embroidering machine tension seat, it is characterized in that: the bottom line detection contact (3) that below described yarn take-up spring, is provided with conduction, yarn take-up spring, upper thread detection contact and bottom line detection contact are electrically connected with the break alarm circuit respectively, send the signal whether upper thread detection contact and bottom line detection contact are electrically connected with yarn take-up spring to the break alarm circuit.
The further scheme of the utility model device is: described upper thread detection contact and bottom line detection contact are fixed on the tension seat by the screw that can regulate its position respectively.
Detect the two states that upper thread has only utilized yarn take-up spring by yarn take-up spring in the prior art: when upper thread was not disconnected, yarn take-up spring had bigger work range, and when upper thread had broken, the yarn take-up spring motion amplitude was zero; So can only carry out upper thread detects.The utility model finds then that yarn take-up spring is actual and also has a kind of intermediateness that promptly have three kinds of states: 1. embroidery machine is wanted line amount maximum under the situation that upper thread, bottom line all have, so yarn take-up spring motion amplitude maximum; 2. do not have bottom line, light to have to want under the situation of upper thread the line amount be less than the upper thread bottom line all sometimes want the line amount, so the motion amplitude of yarn take-up spring reduce, but non-vanishing; Wanting the line amount when 3. not having upper thread is zero, and the motion amplitude of yarn take-up spring also reaches zero.According to this phenomenon, the utility model is judged the broken string situation by three kinds of motion amplitudes judging yarn take-up spring.
The utility model device is provided with detection contact respectively at the yarn take-up spring upper and lower, when working properly, and yarn take-up spring motion amplitude maximum, the bottom line detection contact below can contacting, warning circuit sends signal working properly after picking up this signal; When bottom line had broken, the motion amplitude of yarn take-up spring reduced, and can't contact bottom line detection contact (but can not contact top contact), and warning circuit connects and picks up this signal and promptly send the disconnected alarm signal of bottom line; When upper thread had broken, yarn take-up spring can contact the upper thread detection contact of top, and warning circuit can send the disconnected alarm signal of upper thread after picking up this signal.
The utility model method has simple, sensitive advantage, checkout gear with the design of the utility model method need only be provided with the broken string situation that two electric contacts can detect upper thread, bottom line delicately on tension seat, have highly sensitive, simple in structure, be easy to processing and install, require low, the advantage that automatically controlled cost is low, owing to adopt the fixing contact of relative position, reduced the probability that there was a mechanical failure, improved the reliability of work.And warning circuit of the present utility model can also easily to distinguish upper thread according to the difference of picking up signal point and pickoff signals different disconnected or bottom line is disconnected.
Upper thread detection contact and bottom line detection contact adjustable positions that the further scheme of the utility model device is provided with, so can adjust the detection effect by the adjusting of mechanical location easily, improve detection sensitivity, regulate easily, need not the adjustment on the electric-control system software and hardware, be easy to tackle the otherness of different manufacturers machinery, improved the adaptability of checkout gear different embroidery machines.。
Description of drawings
Fig. 1, existing tension seat structural representation with upper thread burn out detection function
The single tension seat structural representation of Fig. 2, the utility model embodiment
Fig. 3, Fig. 2 embodiment are used for the mechanical structure schematic diagram of nine kinds of needles with tension seat
The A of Fig. 4, Fig. 3 is to view
Fig. 5, the utility model embodiment circuit diagram
1-upper thread detection contact 2-yarn take-up spring 3-bottom line detection contact
The specific embodiment
This example is the nine kinds of needles tension seat, above each tension seat metal yarn take-up spring 2 movement locus, be provided with a upper thread detection contact 1, the below is provided with a bottom line detection contact 3, two contacts are the metallic copper post, be embedded in movingly in the circumferential arc sliding tray, and, can regulate the position of two detection contact by set screw by set screw and sliding tray relative fixed.
When yarn take-up spring is reset at the top by upper thread release, upper thread detection contact 1 can be contacted, when motion amplitude reaches maximum, the bottom line detection contact 3 of below can be contacted.
Two detection contact front and backs are conductings, and yarn take-up spring contacts with the contact is anterior, and the rear portion, contact is electrically connected with warning circuit by terminal screw, and yarn take-up spring also is electrically connected with warning circuit.
This example is the bottom line detection contact 3 usefulness lead phase short circuits of all pin position correspondences and get a end of a thread and be electrically connected with warning circuit, the corresponding upper thread detection contact 1 usefulness lead short circuits in all pin positions and get a end of a thread and be electrically connected with warning circuit.
It is disconnected or bottom line is disconnected that warning circuit can easily be distinguished upper thread according to the difference of picking up signal point and pickoff signals different.
This routine warning circuit is respectively equipped with warning piece and bottom line detection contact the warning piece when with yarn take-up spring being electrically connected of upper thread detection contact when being electrically connected with yarn take-up spring, and is disconnected to distinguish the disconnected still bottom line of upper thread according to the difference of sending the signal alarm parts.
Warning circuit is handled by yarn take-up spring and two detection contact pickoff signals, and it is disconnected to differentiate the disconnected still bottom line of upper thread according to the difference and the height that picks up current potential of picking up signal point.This example applies high potential to yarn take-up spring, and two detection contact are electronegative potential, and when detection contact contacted yarn take-up spring, this detection contact became high potential, and following table is that the computer main controller sends the each point current potential in the wire clamp signal time slot:
| Upper thread detection contact current potential | Bottom line detection contact current potential | |
| During normal embroidery | Low | High |
| During section line | High | Low |
| When breaking bottom line | Low | Low |
What represent in the table is the contrast of normal embroidery, section line, disconnected three kinds of states of bottom line, after the computer main controller sends the wire clamp signal, pass to the yarn take-up spring place, judge three kinds of states of yarn take-up spring according to the current potential of upper thread detection contact and bottom line detection contact, as can be seen from the above table, when section line and disconnected bottom line, the current potential of two detection contact is different, and it is disconnected or bottom line is disconnected just can the time to judge upper thread at broken string according to this.
Fig. 5 is this routine warning circuit figure: the bottom line detection contact connects the break alarm parts by the broken string ON-OFF control circuit;
As long as can not contact with yarn take-up spring because detect the bottom line detection contact, can predicate the broken string situation that takes place (no matter bottom line still is the upper thread broken string), the broken string ON-OFF control circuit can be controlled the break alarm parts and send disconnected alarm signal.
Disconnected in order to distinguish the disconnected still upper thread of bottom line: this routine bottom line detection contact and upper thread detection contact two logic level inputs of AND circuit respectively connect, and the logic level output of gate circuit connects the difference warning piece by the distinguishing signal ON-OFF control circuit.
Because the level of bottom line detection contact and upper thread detection contact was inequality when bottom line was disconnected and upper thread breaks, can export different control signals according to different incoming levels so utilize logic gates, send different signals by distinguishing signal ON-OFF control circuit control difference warning piece, reach and distinguish the disconnected purpose of the disconnected still bottom line of upper thread.
This routine particular circuit configurations is: bottom line detection contact 3 is connected with 4538 monostable flipflop A, the monostable flipflop first output Q ' is connected with red light break alarm circuit, second output Q end connects with nor gate B first input end a, the upper thread detection contact connects the D trigger end of d type flip flop 4013, the d type flip flop output connects with the nor gate B second input b, the disconnection signal DXQD end that the computer master control is sent connects by not circuit AND B the 3rd input c, nor gate B output d is connected with the difference ON-OFF control circuit, this difference ON-OFF control circuit is AND circuit M, described OR-NOT circuit output d and timer 555 square-wave signal outputs are connected with this AND circuit D two inputs respectively, the AND circuit output is connected with the green light warning circuit, and the CP input of described d type flip flop is connected with the wire clamp signal XJIA end of computer output.
The operation principle of foregoing circuit is:
One, break alarm:
Embroidery operation just often, the bottom line detection contact is by the continuous touching of yarn take-up spring, keeps low level eventually as the first output Q ' of the monostable flipflop A of broken string ON-OFF control circuit; When no matter disconnected the or bottom line of upper thread when disconnected, the yarn take-up spring detection contact that all can't get a touchdown, then monostable Q ' output becomes high level, delivers to red light break alarm circuit, has realized broken string red alarm function.
Output Q ' the end of monostable flipflop 4538 is a high level when stable state, be arranged to 0.22 second its time delay, with at present more common 700 (rev/min) embroidery speed calculate, 0.22 second time about 2.6 changes, the 2 pin multiple spots of promptly embroidering approximately in 0.22 second time, that is to say, if it is bottom line or upper thread have broken,, only many through 2 pins for 700 machines that change, monostable flipflop can send alarm signal, has improved the sensitivity that bottom line and upper thread detect greatly.
Two, the broken string of the end, upper thread is distinguished:
Three logic level inputs of nor gate B a of this routine ON-OFF control circuit, b, c and the level of output d under three kinds of different situations are:
| The a level point | The b level point | The c level point | The d level point | Green light | Red light | |
| Bottom line is disconnected | 0 | 0 | 0 | 1 | Bright and the flicker | Chang Liang |
| Upper thread is disconnected | 0 | 1 | 0 | 0 | No-output | Chang Liang |
| The bottom surface line is normal | 1 | 0 | 0 | 0 | Chang Liang does not glimmer | Do not work |
1, when disconnected bottom line stopped, AND circuit M opened, and allowed 555 square waves that produce to deliver to green light difference warning circuit, the green light flicker, and the state that present in this moment is that red light is bright, the green light blink states; Prompting is that bottom line is disconnected;
2, when section line stops, AND circuit M turn-offs, and 555 square waves that produce can't be delivered to green light difference warning circuit, the green light no-output, and the state that present in this moment is that only red light is bright, prompting is that upper thread is disconnected;
3, the normal embroidery when doing, AND circuit M turn-offs, and green light does not glimmer, and red light does not work yet, and is only powered to green light by the disconnected inspection of former computer plate, i.e. green light Chang Liang only;
This device all sends the red alarm signal when upper thread or bottom line broken string, simultaneously can by square-wave signal can be added to it is glimmered to distinguish bottom line disconnected or upper thread is disconnected.
In addition, when pull bar stopped, the DXQD signal was a low level, through non-be high level behind the door, through or door and non-be low level behind the door, then with door shutoff, 555 square waves can't pass through, and can not send alarm signal.
With respect to the computer embroidering machine that has upper thread burn out detection function in the prior art, present embodiment need not change the structure of existing equipment, mechanically only needing increases a bottom line detection contact below original tension seat yarn take-up spring, the adjustable bit architecture of bottom line detection contact and the electric connection structure equalization at the back side all can adopt and upper thread detection contact unified structure form.Also only need to do some improvement on the circuit, needn't change the mode of connection of the disconnected inspection of former computer embroidering machine plate, so can not change other operation of original computer embroidering machine, for example the benefit behind the broken string is embroidered operation, owing to do not revise the circuit of original disconnected inspection plate, do not influence the embroidery state of mending.
This example is that to distinguish upper thread according to the difference of sending the signal alarm parts disconnected or bottom line is disconnected.Also can utilize other circuit structure to distinguish by sending different alarm signals.
Adopt the warning circuit of the utility model method can improve the bottom line warning sensitivity; and has a function of distinguishing bottom line, upper thread broken string; this circuit structure can have multiple implementation; present embodiment only is a kind of preferred embodiment; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model all still belongs to the protection domain of technical solutions of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, bottom thread of computer embroidering machine checkout gear, be provided with the upper thread detection contact (1) of conduction in yarn take-up spring (2) top of computer embroidering machine tension seat, it is characterized in that: the bottom line detection contact (3) that below described yarn take-up spring, is provided with conduction, yarn take-up spring, upper thread detection contact and bottom line detection contact are electrically connected with the break alarm circuit respectively, send the signal whether upper thread detection contact and bottom line detection contact are electrically connected with yarn take-up spring to the break alarm circuit.
2, bottom thread of computer embroidering machine checkout gear according to claim 1 is characterized in that: described upper thread detection contact and bottom line detection contact are fixed on the tension seat by the screw that can regulate its position respectively.
3, bottom thread of computer embroidering machine checkout gear according to claim 1 is characterized in that: described warning circuit is respectively equipped with warning piece and bottom line detection contact the warning piece when with yarn take-up spring being electrically connected of upper thread detection contact when being electrically connected with yarn take-up spring.
4, bottom thread of computer embroidering machine checkout gear according to claim 1 is characterized in that: described bottom line detection contact is connected with the break alarm parts by the broken string ON-OFF control circuit; Described bottom line detection contact and upper thread detection contact two logic level inputs of AND circuit respectively connect, and the logic level output of gate circuit is connected with the difference warning piece by the distinguishing signal ON-OFF control circuit.
5, bottom thread of computer embroidering machine checkout gear according to claim 4, it is characterized in that: described bottom line detection contact is connected with monostable flipflop (A), monostable flipflop first output (Q ') be connected with the break alarm parts, second output (Q) holds same nor gate (B) first input end (a) to connect, the upper thread detection contact connects the trigger end of d type flip flop, the same nor gate of d type flip flop output (B) second input (b) connects, the disconnection signal DXQD end that the computer master control is sent connects by the same nor gate of not circuit (B) the 3rd input (c), nor gate (B) output (d) is connected with the difference ON-OFF control circuit, this difference ON-OFF control circuit is AND circuit (M), described OR-NOT circuit output (d) and timer square-wave signal output are connected with this AND circuit input respectively, the AND circuit output is connected with the difference warning piece, and the CP input of described d type flip flop is connected with wire clamp signal (XJIA) end of computer master control output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201372374U CN201265088Y (en) | 2008-09-24 | 2008-09-24 | Ground thread detection device of computer embroidery machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201372374U CN201265088Y (en) | 2008-09-24 | 2008-09-24 | Ground thread detection device of computer embroidery machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265088Y true CN201265088Y (en) | 2009-07-01 |
Family
ID=40831453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201372374U Expired - Lifetime CN201265088Y (en) | 2008-09-24 | 2008-09-24 | Ground thread detection device of computer embroidery machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265088Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619524B (en) * | 2008-06-30 | 2012-11-14 | 北京大豪科技股份有限公司 | Detection method and device for bottom thread of computer embroidering machine |
-
2008
- 2008-09-24 CN CNU2008201372374U patent/CN201265088Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619524B (en) * | 2008-06-30 | 2012-11-14 | 北京大豪科技股份有限公司 | Detection method and device for bottom thread of computer embroidering machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101619524B (en) | Detection method and device for bottom thread of computer embroidering machine | |
| CN201265088Y (en) | Ground thread detection device of computer embroidery machine | |
| CN108377146A (en) | A kind of Hall detection circuit and intelligent wearable device | |
| CN203625619U (en) | Broken yarn monitoring device | |
| CN201268772Y (en) | Thread break induction detection device of sewing machine | |
| CN203249984U (en) | Tool for detecting open circuit and short circuit of flexible circuit board | |
| CN204086849U (en) | Programmable Logic Controller redundancy control system | |
| CN105354962A (en) | Self-adaptive cable antitheft device and method | |
| CN202595415U (en) | Warp blocking, warp breaking and warp finishing automatic stop device of plastic circular weaving machine | |
| CN205368781U (en) | Liquid level detecting head, liquid level detecting device and washing machine | |
| CN101914841A (en) | Needle position detecting mechanism of industrial sewing machine | |
| CN202175828U (en) | Computer flat knitting machine probe system | |
| CN203960498U (en) | Broken yarn is shut down checkout gear and is caught limit yarn feeding device | |
| CN208183222U (en) | A kind of circular knitting machine control system for needle selection | |
| CN206326224U (en) | A kind of middle wire wire cutting machine fracture of wire detection warning device | |
| CN104018284B (en) | Broken yarn is shut down checkout gear and detection method thereof and is caught limit yarn feeding device | |
| CN105887346A (en) | Sewing machine with thread breakage and cloth detection function | |
| US3631690A (en) | Latch needle knitting machines | |
| CN201678825U (en) | Needle position detection mechanism for industrial sewing machine | |
| CN201087234Y (en) | Yarn detector | |
| CN108330605A (en) | A kind of circular knitting machine control system for needle selection and control method | |
| CN104730379B (en) | A kind of power information acquisition terminal proving installation | |
| CN219099490U (en) | On-line monitoring device for needle selector of seamless knitted underwear machine | |
| CN214271220U (en) | Magnetic induction broken yarn alarm mechanism | |
| CN103485005B (en) | A kind of real silk break-line detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING DAHAO TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING XINGDAHAO TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100016 M7, 1 East Jiuxianqiao Road, Beijing, Chaoyang District Patentee after: Beijing Dahao Technology Co., Ltd. Address before: 100016 M7, 1 East Jiuxianqiao Road, Beijing, Chaoyang District Patentee before: Beijing Xingdahao Technology Development Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090701 Effective date of abandoning: 20080924 |
|
| RGAV | Abandon patent right to avoid regrant |