JPH0526516B2 - - Google Patents
Info
- Publication number
- JPH0526516B2 JPH0526516B2 JP2372285A JP2372285A JPH0526516B2 JP H0526516 B2 JPH0526516 B2 JP H0526516B2 JP 2372285 A JP2372285 A JP 2372285A JP 2372285 A JP2372285 A JP 2372285A JP H0526516 B2 JPH0526516 B2 JP H0526516B2
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- filter element
- spatial filter
- differential spatial
- slit
- 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
- 238000000034 method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000009958 sewing Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Knitting Machines (AREA)
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はミシンや丸編機、ワインダー等各種の
繊維機械に於いて、ミシン糸や編立糸条等の走行
糸長や糸速、糸切れ等を確実に監視するようにし
た方法に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to various textile machines such as sewing machines, circular knitting machines, and winders. This invention relates to a method for reliably monitoring cuts, etc.
（従来技術）
従来は走行糸条の糸長や糸速、糸切れ等を監視
する場合、例えばローラーに糸条を巻きつけて行
なう方法があるが、接触方式で行なうため糸条の
滑りや摩擦などにより、糸長や糸速、糸切れ等を
正確に監視することができない欠点があつた。(Prior art) Conventionally, when monitoring the yarn length, yarn speed, yarn breakage, etc. of a traveling yarn, there is a method of winding the yarn around a roller, for example, but since it is carried out by a contact method, it is difficult to monitor the yarn slippage and friction of the yarn. Therefore, there was a drawback that yarn length, yarn speed, yarn breakage, etc. could not be accurately monitored.
また、前記ローラを回転させるためのエネルギ
ーを糸条の走行により得るため、糸条に予期せぬ
悪影響を及ぼす恐れがあつた。 In addition, since the energy for rotating the roller is obtained by running the yarn, there is a risk of unexpected adverse effects on the yarn.
（実施例）
第２図において、１はレーザーダイオード、２
は差動型空間フイルター素子、３は走行糸条、４
は増幅器である。(Example) In Fig. 2, 1 is a laser diode, 2
3 is a differential spatial filter element, 3 is a running yarn, 4 is a differential spatial filter element;
is an amplifier.
差動型空間フイルター素子２は、夫々並列状に
一体化連設されたスリツト列ａ，ａ，，……から
なるスリツト列群Ａ及びスリツト列ｂ，ｂ，……
からなるスリツト列群Ｂの組み合わせで構成さ
れ、更にスリツト列ａ，ｂは夫々太陽電池等の感
光性導電性材料で形成され、且つスリツト列ａ，
ｂを交互に並置するようにしてある。 The differential spatial filter element 2 includes a slit row group A and a slit row group b, b, .
The slit rows a, b are each made of a photosensitive conductive material such as a solar cell, and the slit rows a, b are made of a photosensitive conductive material such as a solar cell.
b are arranged in parallel alternately.
即ち、差動型空間フイルター素子２によつてス
リツト列群Ａ及びＢの合成した信号の差を検出す
るように構成してある。 That is, the differential spatial filter element 2 is configured to detect the difference between the combined signals of the slit row groups A and B.
尚、一般的には上記差動出力の時間的変化はス
リツト列群Ａ，Ｂに投影された像のスリツトａ，
ｂ間のピツチに対する空間的移動量に比例するこ
とが知られている。（例えば『計測と制御』
VOL.19、No.４、55／４、P47、小林 彬）
次にその作動を説明すると、先ず糸条３をレー
ザーダイオード１と差動型空間フイルター素子２
間に挿入し、無接触で適宜走行させるようにして
おき、レーザーダイオード１からの光を差動型空
間フイルター素子２上に照射する。 Generally speaking, the temporal change in the differential output is based on the slits a,
It is known that it is proportional to the amount of spatial movement with respect to the pitch between b. (For example, "Measurement and Control"
VOL.19, No.4, 55/4, P47, Akira Kobayashi) Next, to explain its operation, first the thread 3 is connected to the laser diode 1 and the differential spatial filter element 2.
The light from the laser diode 1 is irradiated onto the differential spatial filter element 2 by inserting the light from the laser diode 1 into the gap and allowing the light to run without contact.
尚、光源としては、平行光或いは点光源のいず
れを用いてもよい。 Note that as the light source, either parallel light or a point light source may be used.
この結果、糸条の走行距離に比例して差動型空
間フイルター素子２からの出力による微弱な電気
信号が得られるのである。 As a result, a weak electrical signal is obtained from the differential spatial filter element 2 in proportion to the traveling distance of the yarn.
次いで上記微弱な電気信号を増幅器４で増幅し
適宜の外部カウンターを介して入力可能なパルス
列に変換するのである。 Next, the weak electrical signal is amplified by the amplifier 4 and converted into a pulse train that can be inputted via an appropriate external counter.
尚、前記パルス数の総和は糸条の移動量を示
し、また単位時間内のパルス数は糸条の走行速度
に比例するのである。 The total number of pulses indicates the amount of movement of the yarn, and the number of pulses within a unit time is proportional to the traveling speed of the yarn.
更に一定時間毎にパルス列の有無を監視するこ
とにより、糸切れ等の状態をチエツクできるので
ある。 Furthermore, by monitoring the presence or absence of a pulse train at regular intervals, conditions such as thread breakage can be checked.
尚、第２図の代りに第３図の如く、レーザーダ
イオード１からの光線束を非球面レンズ５を介し
平行光にし、更にプリズム６を介して光束の向き
を略直角状に方向転換させて、差動型空間フイル
ター素子２上に照射し、且つ糸条３をプリズム６
と差動型空間フイルター素子２間に挿入し、無接
触で走行させるようにしてもよい。 Incidentally, instead of FIG. 2, as shown in FIG. 3, the beam from the laser diode 1 is made into parallel light through an aspherical lens 5, and further the direction of the beam is changed approximately at right angles through a prism 6. , onto the differential spatial filter element 2, and pass the thread 3 through the prism 6.
It may also be inserted between the differential spatial filter element 2 and the differential spatial filter element 2 and run without contact.
（効果）
本発明は以上のように、適宜の糸条を無接触の
状態で適宜走行させながら、糸条の走行糸長や糸
速、糸切れ等を確実に監視でき、更にミシンによ
る縫製時においては目飛び等も容易に監視できる
もので、無接触型の糸条の監視方法と極めて合理
的なものである。(Effects) As described above, the present invention makes it possible to reliably monitor the running thread length, thread speed, thread breakage, etc. of threads while running appropriate threads in a non-contact state, and further, during sewing with a sewing machine. In this method, it is possible to easily monitor skipped stitches, etc., and it is an extremely rational non-contact yarn monitoring method.
図面は本発明の実施例を示したもので、第１図
は、差動型空間フイルター素子の作動説明用平面
図、第２図は装置全体の説明用側面図、第３図は
他の実施例を示した装置全体の説明用側面図であ
る。
１……レーザーダイオード、２……差動型空間
フイルター素子、３……走行糸条、４……増幅
器、５……非球面レンズ、６……プリズム。
The drawings show an embodiment of the present invention; FIG. 1 is a plan view for explaining the operation of a differential spatial filter element, FIG. 2 is a side view for explaining the entire device, and FIG. 3 is a diagram showing another embodiment. It is an explanatory side view of the whole device which showed an example. DESCRIPTION OF SYMBOLS 1... Laser diode, 2... Differential spatial filter element, 3... Traveling thread, 4... Amplifier, 5... Aspherical lens, 6... Prism.
Claims (1)
らなるスリツト列群Ａ及びスリツト列ｂ，ｂ，…
…からなるスリツト列群Ｂを夫々別途に一体化連
設するとともにスリツト列ａ，ｂを交互に配置し
て差動型空間フイルター素子２を形成し、同フイ
ルター素子２に平行光或いは点光源を照射して該
光線束中に被測定糸条３を走行させ、差動型空間
フイルター素子２上に投影された蔭の移動により
これを感知し、差動型空間フイルター素子２出力
の電気信号をパルス列に変換して、糸条３の走行
糸長や糸速、糸切れ等を監視するようにしたこと
を特徴とする糸条の走行監視方法。1 Slit row group A consisting of slit rows a, a, ... arranged in parallel and slit rows b, b, ...
A differential spatial filter element 2 is formed by separately integrating slit row groups B consisting of... and arranging slit rows a and b alternately. The yarn 3 to be measured is caused to run through the beam bundle, and this is sensed by the movement of the shadow projected onto the differential spatial filter element 2, and the electrical signal output from the differential spatial filter element 2 is detected. A yarn running monitoring method characterized in that the running yarn length, yarn speed, yarn breakage, etc. of the yarn 3 are monitored by converting it into a pulse train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2372285A JPS61181489A (en) | 1985-02-08 | 1985-02-08 | Monitoring of yarn running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2372285A JPS61181489A (en) | 1985-02-08 | 1985-02-08 | Monitoring of yarn running |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181489A JPS61181489A (en) | 1986-08-14 |
| JPH0526516B2 true JPH0526516B2 (en) | 1993-04-16 |
Family
ID=12118213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2372285A Granted JPS61181489A (en) | 1985-02-08 | 1985-02-08 | Monitoring of yarn running |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61181489A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5925451B2 (en) * | 2011-09-15 | 2016-05-25 | Juki株式会社 | sewing machine |
-
1985
- 1985-02-08 JP JP2372285A patent/JPS61181489A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181489A (en) | 1986-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |