CN200988897Y - Detector for broken thread of sewing machine - Google Patents
Detector for broken thread of sewing machine Download PDFInfo
- Publication number
- CN200988897Y CN200988897Y CN 200620048637 CN200620048637U CN200988897Y CN 200988897 Y CN200988897 Y CN 200988897Y CN 200620048637 CN200620048637 CN 200620048637 CN 200620048637 U CN200620048637 U CN 200620048637U CN 200988897 Y CN200988897 Y CN 200988897Y
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- torsion spring
- sewing machine
- sensing chip
- mount pad
- wire
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Abstract
The utility model provides a thread break detector used in a sewing machine, relating to a detector, which solves the problems existed in prior thread break detector of a sewing machine such as complex structure, high cost, narrow application scope as well as inconvenient positioning and debugging. The thread break detector used in a sewing machine comprises a positioning seat and a torsion spring arranged on the positioning seat, wherein one end of the torsion spring is provided with a feeler lever, which is provided with a hole for the sewing thread to through, an inductive chip is arranged on the positioning seat which is arranged to insulate with the torsion spring, the torsion spring and the inductive chip are connected with the two electrodes of a power supply by a conducting wire, an I/O unit receiving current signal is connected in series with the circuit between the torsion spring and the inductive chip, the controlling system which can detect the occurrence of thread break is connected with the I/O unit. The utility model has the advantages of simple structure, low cost, stable and reliable operation, extensive application scope and convenient positioning and debugging.
Description
Technical field
The utility model relates to a kind of checkout gear, especially relates to a kind of broken thread detector that is used for Sewing machines.
Background technology
In Sewing machines work process, sewing thread might rupture at any time, under the situation of no supervision, if untimely discovery and handle and will impact operate as normal.Whether break for the ease of detection in time, people have designed diversified checkout gear.
For example, Japanese Juki Corporation has designed a kind of Sewing machines, uses a kind of broken thread detector on it.Mainly be to utilize the yarn take-up spring of crossing the line position of Sewing machines to judge whether broken string with the signal that contacts, leaves generation of the detection lug of installing on this next door, position.This device needs to utilize the yarn take-up spring that carries out function of receiving line when serving as sewing, so yarn take-up spring can not need to regulate for detecting, otherwise can cause the function of receiving line of yarn take-up spring to exert an influence specially according to the needs that detect.Simultaneously, this mechanism's scope of application is restricted, and is only applicable to the Sewing machines that this class has the yarn take-up spring structure.
In addition, German Du Kepu company has designed a kind of lockstitch button holder, adopts an electronic component that has rectangular channel.When this groove moves up and down, signal output can be arranged just as sewing thread.When there not being line in groove, when mobile, then not have signal output.Judge whether to break by having or not of sort signal.Because this device price comparison costliness is unfavorable for applying.On the other hand, because its sensitivity is higher, sometimes behind the broken string, under the mechanical oscillation effect, cause sewing thread to still have less moving in detecting with rectangular channel, and this element is thought sewing thread by mistake in normal swing, the situation that can not in time detect broken string after causing breaking happens occasionally.In addition, because power supply need be provided, when voltage or power supply instability, also as easy as rolling off a log this component wear that causes.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of simple in structure, and manufacturing cost and use cost is cheap, is applicable to various types of Sewing machiness, and is convenient to the wire-off detection device for sewing machine installing and debug.
For achieving the above object, the utility model has adopted following technical proposal: this wire-off detection device for sewing machine, comprise mount pad, be arranged on the torsion spring on the mount pad, end at torsion spring has a feeler lever, on feeler lever, be provided with a cable-through hole that supplies sewing thread to pass, it is characterized in that, a sensing chip that is provided with the torsion spring insulation also is housed on the described mount pad, torsion spring and sensing chip are connected on the two poles of the earth of power supply respectively by connecting wire, on the circuit between torsion spring and the sensing chip, also be in series with the I/O unit of a received current signal, be used to judge whether that the control system and the I/O unit that break link.
When shank was in different duties, the position of sewing thread can change, the varying in size of the power that the sewing thread that therefore can cause feeler lever to be subjected to applies.When shank was in the extreme higher position, sewing thread was less to the power that feeler lever applies, because the elastic force effect of torsion spring, feeler lever keeps contacting with sensing chip, and entire circuit is communicated with like this, and the I/O unit can receive current signal.When shank descended, sewing thread increased gradually to the power that feeler lever applies, and when it was enough to overcome the torsion of torsion spring, feeler lever will break away from sensing chip, and entire circuit is cut off like this, and the I/O unit can't receive current signal.The action that so moves in circles, the I/O unit will produce the current signal that cuts in and out.Control system links with the I/O unit, and the signal that it can read with certain sample frequency in the I/O unit changes.In case the sewing thread fracture, feeler lever will contact with sensing chip under the torsion of torsion spring all the time, and entire circuit is in conducting state all the time, and control system just can detect sewing thread and disconnect, so that in time take measures.
In above-mentioned wire-off detection device for sewing machine, described sensing chip has a U type coupler body, and the sewing thread that passes cable-through hole can drive feeler lever and contact with U type coupler body or separate.The power that feeler lever is applied when sewing thread hour, feeler lever just leans in U type coupler body; When the power that feeler lever is applied when sewing thread was big, feeler lever was convenient to U type coupler body and is broken away from.
In above-mentioned wire-off detection device for sewing machine, described torsion spring is fixed on by screw on the pin of mount pad, also is with an adjustment sheet that is used to regulate torsion spring torsion on screw.
Adjustment sheet has made things convenient for the installation and the debugging of checkout gear, to adapt to various types of Sewing machiness.In addition, may cause sensitivity to reduce because of reasons such as part generation deformation in use for some time.Owing to be provided with adjustment sheet, can according to circumstances regulate the torsion of torsion spring at any time, so that make whole detection device be in optimum Working.
In above-mentioned wire-off detection device for sewing machine, described sensing chip is fixed on the mount pad by screw, is provided with an insulation spacer between sensing chip and mount pad.
Can make sensing chip and torsion spring isolated by insulation spacer, only just conducting of circuit when feeler lever contacts with sensing chip.Certainly, whole mounting seat also can adopt conductor to make, and sensing chip also should insulate mutually with whole mounting seat like this, and torsion spring can be conducted with mount pad.In order further to improve insulating properties, guarantee directly not conduct electricity between sensing chip and the torsion spring, in above-mentioned wire-off detection device for sewing machine, the described sensing chip outside also is provided with an insulation gap cover.
In above-mentioned wire-off detection device for sewing machine, described mount pad bottom is provided with one regulating tank is installed, and described installation regulating tank is bar shaped.Because be provided with the installation regulating tank of bar shaped, whole detection device can be carried out the position adjustment as required when mounted, improved the flexibility of using.
Compared with prior art, the advantage of this wire-off detection device for sewing machine is: 1. simple in structure, cost of manufacture is less, and can stably detect the generation of broken string situation, and working stability is reliable.2. whole detection device independently is provided with, and can be applicable to the Sewing machines of various types, has expanded range of application, and Installation and Debugging are also extremely convenient.3. in use can in time regulate correction to checkout gear, maintain and replace is also very convenient.
Description of drawings
Fig. 1 is the part assembly drawing of this wire-off detection device for sewing machine.
Fig. 2 is the electrical block diagram of this wire-off detection device for sewing machine.
Fig. 3 is the user mode structure chart of this wire-off detection device for sewing machine.
Among the figure, mount pad 1, pin 1a, installation regulating tank 1b, torsion spring 2, feeler lever 21, cable-through hole 22, sensing chip 3, U type coupler body 31, power supply 4, I/O unit 5, control system 6, adjustment sheet 7, insulation spacer 8, insulation gap cover 9, shank 10, line crossing bracket 11, line crossing bracket hole 11a, sewing thread 12, screw 13, screw 14.
The specific embodiment
As shown in Figure 3, whole detection device is installed between sewing machine needle bar 10 and the line crossing bracket 11.After the line crossing bracket hole 11a of sewing thread 12 from line crossing bracket 11 passes, arrive shank 10 through checkout gear.
As shown in Figure 1, this wire-off detection device for sewing machine comprises mount pad 1, parts such as torsion spring 2, insulation spacer 8, sensing chip 3.Be provided with one in mount pad 1 bottom regulating tank 1b is installed, this installation regulating tank 1b is bar shaped.
As shown in Figure 2, torsion spring 2 and sensing chip 3 are connected on the two poles of the earth of power supply 4 respectively by connecting wire, on the circuit between torsion spring 2 and the sensing chip 3, also be in series with the I/O unit 5 of a received current signal, be used to judge whether that the control system 6 that breaks links with I/O unit 5.Mount pad 1 can be made by conductive material, and torsion spring 2 is conducting with mount pad 1.
In the sewing process, when shank 10 rose to the extreme higher position, the power that 12 pairs of feeler levers 21 of sewing thread apply was less, can't overcome the elastic force effect of torsion spring 2, this moment, feeler lever 21 maintenances contacted with sensing chip 3, and entire circuit is communicated with like this, and the I/O unit can receive current signal.When shank 10 descended, the power that 12 pairs of feeler levers 21 of sewing thread apply increased gradually, and when it was enough to overcome the torsion of torsion spring 2, feeler lever 21 will break away from the U type coupler body 31 of sensing chip 3, and entire circuit is cut off like this, and the I/O unit can't receive current signal.
Shank 10 action that moves in circles, I/O unit 5 will produce the current signal that cuts in and out.Control system 6 links with I/O unit 5, and it changes with the signal that certain sample frequency reads in the I/O unit 5.If break-make is arranged, then expression is not broken; If for logical, represent that then feeler lever 21 contacts with sensing chip 3 all the time under the torsion of torsion spring 2 always, entire circuit is in conducting state all the time, and sewing thread is in off-state.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as mount pad 1, pin 1a, installation regulating tank 1b, torsion spring 2, feeler lever 21, cable-through hole 22, sensing chip 3, U type coupler body 31, power supply 4, I/O unit 5, control system 6, adjustment sheet 7, insulation spacer 8, insulation gap cover 9, shank 10, line crossing bracket 11, line crossing bracket hole 11a, sewing thread 12, screw 13, screw 14 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (6)
1, a kind of wire-off detection device for sewing machine, comprise mount pad (1), be arranged on the torsion spring (2) on the mount pad (1), end at torsion spring (2) has a feeler lever (21), on feeler lever (21), be provided with a cable-through hole (22) that supplies sewing thread to pass, it is characterized in that, a sensing chip (3) that is provided with torsion spring (2) insulation also is housed on the described mount pad (1), torsion spring (2) and sensing chip (3) are connected on the two poles of the earth of power supply (4) respectively by connecting wire, on the circuit between torsion spring (2) and the sensing chip (3), also be in series with the I/O unit (5) of a received current signal, be used to judge whether that the control system (6) that breaks links with I/O unit (5).
2, wire-off detection device for sewing machine according to claim 1 is characterized in that, described sensing chip (3) has a U type coupler body (31), and the sewing thread that passes cable-through hole (22) can drive feeler lever (21) and contact with U type coupler body (31) or separate.
3, wire-off detection device for sewing machine according to claim 2, it is characterized in that, described torsion spring (2) is fixed on by screw (13) on the pin (1a) of mount pad (1), also is with an adjustment sheet (7) that is used to regulate torsion spring (2) torsion on screw (13).
4, wire-off detection device for sewing machine according to claim 2 is characterized in that, described sensing chip (3) is fixed on the mount pad (1) by screw (14), is provided with an insulation spacer (8) between sensing chip (3) and mount pad (1).
5, wire-off detection device for sewing machine according to claim 4 is characterized in that, described sensing chip (3) outside also is provided with an insulation gap cover (9).
According to claim 1 or 2 or 3 or 4 or 5 described wire-off detection device for sewing machine, it is characterized in that 6, described mount pad (1) bottom is provided with one regulating tank (1b) is installed, described installation regulating tank (1b) is bar shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048637 CN200988897Y (en) | 2006-12-06 | 2006-12-06 | Detector for broken thread of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048637 CN200988897Y (en) | 2006-12-06 | 2006-12-06 | Detector for broken thread of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200988897Y true CN200988897Y (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048637 Expired - Fee Related CN200988897Y (en) | 2006-12-06 | 2006-12-06 | Detector for broken thread of sewing machine |
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| Country | Link |
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| CN (1) | CN200988897Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962990B (en) * | 2006-12-06 | 2011-05-04 | 中捷缝纫机股份有限公司 | Wire-off detection device for sewing machine |
| CN106965979A (en) * | 2016-10-18 | 2017-07-21 | 河南金谷实业发展有限公司 | It is automatic to fill packet system |
| CN108301124A (en) * | 2018-04-12 | 2018-07-20 | 杰克缝纫机股份有限公司 | A kind of wire breakage detector for sewing machine |
| CN109554845A (en) * | 2019-01-25 | 2019-04-02 | 杰克缝纫机股份有限公司 | A kind of sewing machine burn out detection control device and sewing machine |
-
2006
- 2006-12-06 CN CN 200620048637 patent/CN200988897Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1962990B (en) * | 2006-12-06 | 2011-05-04 | 中捷缝纫机股份有限公司 | Wire-off detection device for sewing machine |
| CN106965979A (en) * | 2016-10-18 | 2017-07-21 | 河南金谷实业发展有限公司 | It is automatic to fill packet system |
| CN106965979B (en) * | 2016-10-18 | 2022-12-27 | 河南金谷实业发展有限公司 | Automatic bag filling system |
| CN108301124A (en) * | 2018-04-12 | 2018-07-20 | 杰克缝纫机股份有限公司 | A kind of wire breakage detector for sewing machine |
| CN108301124B (en) * | 2018-04-12 | 2020-07-28 | 杰克缝纫机股份有限公司 | A broken string detection device for sewing machine |
| CN109554845A (en) * | 2019-01-25 | 2019-04-02 | 杰克缝纫机股份有限公司 | A kind of sewing machine burn out detection control device and sewing machine |
| CN109554845B (en) * | 2019-01-25 | 2021-01-22 | 杰克缝纫机股份有限公司 | Sewing machine and broken thread detection control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 Termination date: 20111206 |