DE882819C - Process for the automatic control of the delay of drafting equipment and drafting equipment to carry out the process - Google Patents
Process for the automatic control of the delay of drafting equipment and drafting equipment to carry out the processInfo
- Publication number
- DE882819C DE882819C DEP2503A DE0002503A DE882819C DE 882819 C DE882819 C DE 882819C DE P2503 A DEP2503 A DE P2503A DE 0002503 A DE0002503 A DE 0002503A DE 882819 C DE882819 C DE 882819C
- Authority
- DE
- Germany
- Prior art keywords
- drafting
- drafting equipment
- carry out
- delay
- automatic control
- 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
Links
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
Description
In- der Spinnereitechnik werden seit langem Streckwerke verwendet, die den Zweck haben, die vorgelegten Bänder aus Fasern zu vergleichmäßigen, und zwar sowohl in der Richtung als auch in der Dicke der einzelnen Bänder. Obwohl -die Bänder sehr oft und sehr stark gestreckt werden und durch übereinanderlegen eine mög--" lichst große Gleichmäßigkeit gesucht wird, ergeben sich im Endzustande doch noch Fehler, die sich in einem Schwanken der Garnstärke bemerkbar machen, bzw. es muß eine sehr große Anzahl von Streckwerken hintereinandergeschaltet werden, um den angestrebten Zweck zu erreichen.In spinning technology, drafting devices have been used for a long time, which have the purpose of equalizing the submitted strips of fibers, and both in the direction and in the thickness of the individual bands. Although the Ligaments are stretched very often and very strongly and by superimposing one on top of the other If the greatest possible evenness is sought, this nevertheless results in the final state or errors that make themselves noticeable in a fluctuation in the yarn thickness, or it a very large number of drafting devices must be connected in series to to achieve the intended purpose.
.Um die Gleichmäßigkeit schon bei verkürzter Arbeitsweise zu erreichen, wurde bereits vorgeschlagen, mit Hilfe von Abtastvorrichtungen oder Fotozellen eine Prüfung der--Gleichmäßigkeit vorzunehmen und die nachfolgenden Streckwalzen dadurch in ihrer Laufgeschwindigkeit zu beeinflussen, so daß als Endprodukt ein gleichmäßiges Band entsteht. Bei Verwendung von Fotozellen besteht jedoch die Gefahr, daß durch Übereinanderliegen einzelner Fasern eine geringere Gleichmäßigkeit vorhanden zu sein scheint, während die Abtast- -vorrichtung sehr stark vom Auflagedruck und von der. Form des abgetasteten Bandes usw. abhängig ist. Eine Messung mit Hochfrequenz erreicht den angestrebten Zweck auch nur, sehr unvollständig,, weil hierbei durch Feuchtigkeitsschwankungen recht erhebliche Meßfelder entstehen können.In order to achieve uniformity even with a shortened working method, has already been proposed using scanners or photocells a Check the - evenness and thereby the subsequent stretching rollers to influence their running speed, so that the end product is a uniform one Band is created. When using photocells, however, there is a risk that by Individual fibers lying on top of one another have a lower uniformity Seems to be while the scanning device is very dependent on the pad pressure and the. Shape of the scanned band, etc. is dependent. A measurement with high frequency achieves the intended purpose only, very incompletely, because here through Fluctuations in humidity can create quite considerable measuring fields.
Ale diese Schwierigkeiten können bei Verwendung eines Dickenmeßgerätes mit Betastrahlen weitgehend vermieden werden. Bei einem -solchen Gerät wird die Absorption von Betastrahlen eines vorgegebenen Strahlers in einer Ionisationskammer gemessen, und zwar ist die Absorption abhängig von der Masse des zu messenden Gutes, die sich zwischen dem Präparat und der Ionisationskammer befindet.All of these difficulties can arise when using a thickness gauge largely avoided with beta rays. With such a device, the Absorption of beta rays from a given radiator in an ionization chamber measured, namely the absorption depends on the mass of the material to be measured, which is located between the preparation and the ionization chamber.
Die Zeichnung zeigt schematisch eine Ausführungsform eines Streckwerkes zur -Durchführung des Verfahrens gemäß der Erfindung. Das Streckwerk besteht aus den Streckwalzen C1 bis C4, -z"vischen denen das Faserband F verstreckt wird. Zwischen den Streckwalzen befindet sich unter dem Faserband- in einem Behälter b ein Betastrahlen aussendendes Präparat, ihm gegenüber auf der anderen Seite des Faserbandes befindet sich die Ionisationskamera a. Diese ist über einen Verstärker V mit dem Motor M elektrisch gekuppelt, welcher die Streckwalzen C3, C4 antreibt.The drawing shows schematically an embodiment of a drafting system for performing the method according to the invention. The drafting system consists of the drawing rollers C1 to C4, -z "between which the sliver F is drawn. Between the drawing rollers is located under the sliver in a container b a beta radiation emitting preparation, located opposite him on the other side of the sliver the ionization camera a. This is via an amplifier V with the motor M electrically coupled, which drives the stretching rollers C3, C4.
In der Ionisationskammer a wird die Dichte des Bandes je Längeneinheit durch die Intensität der durch das Band hindurchtretenden Betastrahlung erfaßlt. Abweichungen in der Banddichte werden über den Verstärker V verstärkt dem Motor M zugeführt, dessen Drehzahl entsprechend den übermittelten Dichteschwankungen geregelt wird. Durch eine Beschleunigung oder Verzögerung der Streckwalzen C3 und C4 wird je nach diesen Schwankungen eine stärkere oder schwächere Streckung des Faserbandes bewirkt.In the ionization chamber a, the density of the tape per unit length detected by the intensity of the beta radiation passing through the tape. Deviations in the band density are amplified via the amplifier V to the motor M supplied, the speed of which is regulated according to the transmitted density fluctuations will. By accelerating or decelerating the drafting rollers C3 and C4 depending on these fluctuations, a greater or lesser stretching of the sliver causes.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP2503A DE882819C (en) | 1950-06-24 | 1950-06-24 | Process for the automatic control of the delay of drafting equipment and drafting equipment to carry out the process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP2503A DE882819C (en) | 1950-06-24 | 1950-06-24 | Process for the automatic control of the delay of drafting equipment and drafting equipment to carry out the process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE882819C true DE882819C (en) | 1953-07-13 |
Family
ID=5647769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP2503A Expired DE882819C (en) | 1950-06-24 | 1950-06-24 | Process for the automatic control of the delay of drafting equipment and drafting equipment to carry out the process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE882819C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1043886B (en) * | 1954-12-31 | 1958-11-13 | Zellweger A G App Und Maschine | Method and device for automatic regulation of the draft of the sliver in drafting units or the like. |
DE1062587B (en) * | 1956-02-03 | 1959-07-30 | Walther Wegener Dr Ing | Method and device for automatic comparing of fiber ribbons, rovings and the like. like. when stretching |
US2905976A (en) * | 1955-04-01 | 1959-09-29 | Linen Industry Res Ass Of The | Drafting of textile fibres |
US2942303A (en) * | 1957-02-20 | 1960-06-28 | Industrial Nucleonics Corp | Control for drafting apparatus |
DE1087495B (en) * | 1954-07-22 | 1960-08-18 | Federico Calzone | Controlled system |
US2981986A (en) * | 1955-12-27 | 1961-05-02 | Special Instr Lab Inc | Control apparatus and methods |
-
1950
- 1950-06-24 DE DEP2503A patent/DE882819C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1087495B (en) * | 1954-07-22 | 1960-08-18 | Federico Calzone | Controlled system |
DE1043886B (en) * | 1954-12-31 | 1958-11-13 | Zellweger A G App Und Maschine | Method and device for automatic regulation of the draft of the sliver in drafting units or the like. |
US2905976A (en) * | 1955-04-01 | 1959-09-29 | Linen Industry Res Ass Of The | Drafting of textile fibres |
US2981986A (en) * | 1955-12-27 | 1961-05-02 | Special Instr Lab Inc | Control apparatus and methods |
DE1062587B (en) * | 1956-02-03 | 1959-07-30 | Walther Wegener Dr Ing | Method and device for automatic comparing of fiber ribbons, rovings and the like. like. when stretching |
US2942303A (en) * | 1957-02-20 | 1960-06-28 | Industrial Nucleonics Corp | Control for drafting apparatus |
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