JPS57153203A - Detection for variance of sliver thickness - Google Patents
Detection for variance of sliver thicknessInfo
- Publication number
- JPS57153203A JPS57153203A JP3898481A JP3898481A JPS57153203A JP S57153203 A JPS57153203 A JP S57153203A JP 3898481 A JP3898481 A JP 3898481A JP 3898481 A JP3898481 A JP 3898481A JP S57153203 A JPS57153203 A JP S57153203A
- Authority
- JP
- Japan
- Prior art keywords
- variance
- spinning
- sliver group
- thickness
- photodetector
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title 1
- 238000009987 spinning Methods 0.000 abstract 5
- 239000013307 optical fiber Substances 0.000 abstract 2
- 239000000835 fiber Substances 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
- D01H5/38—Regulating or varying draft in response to irregularities in material ; Measuring irregularities
- D01H5/42—Regulating or varying draft in response to irregularities in material ; Measuring irregularities employing electrical time-delay devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
PURPOSE:To detect the variance of the thickness of a spinning sliver group without contacting with a good response and a high reliability, by using a photodetector consisting of many optical fiber elements to detect the variance of the quantity of the light trnsmitted through the spinning sliver group in the drawing frame of the spinning process. CONSTITUTION:In the drawing frame of the spinning process, the variance of the thickness of spinning slivers is detected near back rollers 1 of a draft zone A for the purpose of controlling the variance of the thickness of them. Photoelectric detecting heads B and B' consisting of a pair of a projector and a photodetector are arranged near the place where a parallel sliver group S consisting of a plural slivers is supplied to the draft zone. The photodetector consists of many optical fibers which have tips arranged in one or more lines, and their condensed terminals are connected to a photoelectric sensor. The width of detecting heads is approximately equal to that of the sliver group. On a basis of the fluctuating voltage output of the photoelectric sensor, the variation of the density of fibers per unit area of the sliver group is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3898481A JPS57153203A (en) | 1981-03-17 | 1981-03-17 | Detection for variance of sliver thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3898481A JPS57153203A (en) | 1981-03-17 | 1981-03-17 | Detection for variance of sliver thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57153203A true JPS57153203A (en) | 1982-09-21 |
Family
ID=12540405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3898481A Pending JPS57153203A (en) | 1981-03-17 | 1981-03-17 | Detection for variance of sliver thickness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57153203A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02160939A (en) * | 1988-10-25 | 1990-06-20 | Zinser Textilmas Gmbh | Method and apparatus for monitoring |
-
1981
- 1981-03-17 JP JP3898481A patent/JPS57153203A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02160939A (en) * | 1988-10-25 | 1990-06-20 | Zinser Textilmas Gmbh | Method and apparatus for monitoring |
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