DE739687C - Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer - Google Patents

Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer

Info

Publication number
DE739687C
DE739687C DEC56041D DEC0056041D DE739687C DE 739687 C DE739687 C DE 739687C DE C56041 D DEC56041 D DE C56041D DE C0056041 D DEC0056041 D DE C0056041D DE 739687 C DE739687 C DE 739687C
Authority
DE
Germany
Prior art keywords
electrically conductive
card
cover layer
fabric layers
scraper
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
Application number
DEC56041D
Other languages
German (de)
Inventor
Dipl-Ing Ernst Koldehofe
Dipl-Ing Georg Ludwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental AG
Original Assignee
Continental Gummi Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Priority to DEC56041D priority Critical patent/DE739687C/en
Application granted granted Critical
Publication of DE739687C publication Critical patent/DE739687C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/86Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Karde, deren Kratzenbeschläge eine Unterlage aus gummierten Gewebelagen und einer Gummidecklage aufweisen Die Erfindung bezweckt eine Verbesserung der Karde nach Patent 648 230. Bei dieser Karde besteht die auf, den gummierten Gewebelagen angebrachte Decklage aus elektrisch leitfähigem Gummi und ist die Decklage mit .einem die beim Kardieren entstehende Reibungselektrizität abführenden Leiter verbunden. Die Ableitung der Reibungselektrizität erfolgt dabei durch die Berührungspunkte der Häkchenrücken mit dem Trommelmantel. Die einzelnen Häkchen selbst sind durch die elektrisch leitfähige Gummideckplatte untereinander verbunden. Die Berührung zwischen Häkchen und Deckplatte besteht jedoch nur an den Durchstichstellen in Form einer Kreislinie.Card, the scraper fittings have an underlay of rubberized fabric layers and a rubber cover layer. The invention aims to improve the card according to patent 648 230. In this card, the cover layer attached to the rubberized fabric layers consists of electrically conductive rubber and is the cover layer with .einem the Carding resulting static electricity dissipating conductors connected. The static electricity is dissipated through the points of contact between the back of the hook and the drum shell. The individual hooks themselves are connected to one another by the electrically conductive rubber cover plate. However, the contact between the tick and the cover plate only exists at the puncture points in the form of a circular line.

Unr dabei die Verbindung der einzelnen Häkchen untereinander zu verbessern, ist bei der Karde gemäß der Erfindung zusätzlich zu der aus elektrisch leitfähigem Gummi bestehenden Decklage an der Unterseite der Unterlage eine elektrisch leitfähige Schicht, zweckmäßig aus elektrisch leitfähigem Gummi, vorgesehen, durch welche die Kratzenzähne hindurchgesteckt sind.Unr to improve the connection between the individual ticks, is in the card according to the invention in addition to that made of electrically conductive Rubber existing top layer on the underside of the pad has an electrically conductive Layer, expediently made of electrically conductive rubber, provided through which the Scraper teeth are stuck through.

Durch die Anordnung einer elektrisch leitfähigen Schicht an der Unterseite eines. Kratzentuches mit elektrisch leitfähiger Gummidecklage ergibt sich eine innige Verbindung der einzelnen Häkchen untereinander, da jedes einzelne Häkchen mit seinem Rücken auf der an der Unterseite befindlichen elektrisch leitfähigen Schicht aufliegt.By arranging an electrically conductive layer on the underside one. Scratch cloth with an electrically conductive rubber top layer results in an intimate Connection of the individual ticks with each other, since each individual tick has its own The back rests on the electrically conductive layer on the underside.

Bei der Ausführung der Kratzentücher nach dem Hauptpatent ist unter Zugrundelegung eines Drahtdurchmessers von beispielsweise 0,2 mm die Berührungslinie o,628 mm lang. Da für ein Häkchen zwei Durchstichstellen in Frage kommen, beträgt also die Berührungslinie für ein: Häkchen 1,256 mm. Bei der Ausführung gemäß der Erfindung beträgt allein die Länge des Häkchenrückens, welcher mit der elektrisch leitfähigen Schicht auf der Unterseite in Berührung kommt, 3,5 mm, d. h. also, daß die Berührungslinie um mehr als das Dreifache vergrößert wird. Die elektrisch leitfähige Schicht an der Unterseite gewährleistet also eine bessere Verteilung und dadurch eine bessere Ableitung der beim Kardieren: auftretenden elektrostatischen Elektrizität. Demzufolge wird auch der Ausstoß und somit der Fasergutabfall geringer.In the execution of the scratch cloths according to the main patent, based on a wire diameter of, for example, 0.2 mm, the contact line is 0.628 mm long. Since two puncture points are possible for a tick, the contact line for one is: tick 1.256 mm. In the embodiment according to the invention, the length of the back of the hook, which comes into contact with the electrically conductive layer on the underside, is 3.5 mm, ie that the contact line is increased by more than three times. The electrically conductive layer on the underside ensures better distribution and thus better dissipation of the electrostatic electricity that occurs during carding. As a result, the output and thus the fiber waste is also lower.

Die Anbringung der elektrisch leitfähigen Schicht an der Unterseite erfolgt zweckmäßig bei der Herstellung des Kratzentuches, so daß die Schicht durch Vulkanisation fest mit dem Kratzentuch verbunden werden kann. Die elektrisch leitfähige Schicht kann aber auch durch andere gebräuchliche Mittel, wie Kleben o. dgl., nachträglich befestigt werden..The application of the electrically conductive layer on the underside expediently takes place during the production of the scratch cloth, so that the layer through Vulcanization can be firmly connected to the scratch cloth. The electrically conductive However, the layer can also be subsequently applied by other common means, such as gluing or the like be attached ..

Zu bemerken ist noch, daß die Ausführung der Krätzentücher nach der Erfindung gegenüber dem bekannten Aufbringen einer elektrisch leitfähigen Gummilösung auf die Trommel der Karde vor dem Aufziehen eines Kratzentuches den Vorteil hat, daß der unbedingt erforderliche Spannungsausgleich der Kratze nach dem Aufziehen nicht verhindert wird. Da nämlich die elektrisch leitfähige Schicht schon vor dem Stechen auf der Unterseite des Kratzentuches vorhanden ist, so ist ein ausreichender Spannungsausgleich nach dem Aufziehen der Kratze möglich.It should also be noted that the execution of the scabies cloths according to the Invention over the known application of an electrically conductive rubber solution on the drum of the card before pulling a scratching cloth has the advantage, that the absolutely necessary tension equalization of the scraper after opening is not prevented. Because the electrically conductive layer already before the If there is a sting on the underside of the scratch cloth, one is sufficient Tension compensation possible after opening the scraper.

Claims (1)

PATENTANSPRUCH: Karde, bei welcher die Kratzenbeschläge der Kardierwerkzeuge eine aus gummierten Gewebelagen und einer Gummidecklage bestehendeUnterlage aufweisen, nach Patent 648 23o, dadurch gekennzeichnet, daß zusätzlich zu der aus elektrisch leitfähigem Gummi bestehenden Decklage an der Unterseite der Unterlage eine elektrisch leitfähige Schicht, zweckmäßig aus elektrisch leitfähigem Gummi, vorgesehen ist, durch welche die Kratzenzähne hindurchgesteckt sind. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren in Betracht gezogen worden: schweizerische Patentschrift.. Nr. 183165; britische 309 986; Klepzig's Textil-Zeitschrift 1938, S.641 bis 643.PATENT CLAIM: Card in which the scraper fittings of the carding tools have a base consisting of rubberized fabric layers and a rubber cover layer, according to Patent 648 23o, characterized in that, in addition to the cover layer made of electrically conductive rubber, an electrically conductive layer on the underside of the base, expediently electrically conductive rubber, is provided, through which the scraper teeth are inserted. To distinguish the subject matter of the application from the state of the art, the following were considered in the granting procedure: Swiss patent specification .. No. 183165; British 309,986; Klepzig's Textil-Zeitschrift 1938, pages 641 to 643.
DEC56041D 1940-10-11 1940-10-12 Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer Expired DE739687C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC56041D DE739687C (en) 1940-10-11 1940-10-12 Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE223198X 1940-10-11
DEC56041D DE739687C (en) 1940-10-11 1940-10-12 Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer
CH196608T 1941-10-03

Publications (1)

Publication Number Publication Date
DE739687C true DE739687C (en) 1943-10-01

Family

ID=27177834

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC56041D Expired DE739687C (en) 1940-10-11 1940-10-12 Card, the scraper fittings of which have an underlay of rubberized fabric layers and a rubber cover layer

Country Status (1)

Country Link
DE (1) DE739687C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037074A1 (en) * 2011-09-16 2013-03-21 Graf + Cie Ag Clothing for a flat of a carding machine
WO2014135941A1 (en) 2013-03-06 2014-09-12 Graf + Cie Ag Foundation for a clothing of a carding machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309986A (en) * 1928-04-19 1929-12-12 Rudolf Kern Improvements in foundations for card fillets or the like
CH183165A (en) * 1935-05-10 1936-03-31 Cronshaw Clegg Eric Card sliver.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309986A (en) * 1928-04-19 1929-12-12 Rudolf Kern Improvements in foundations for card fillets or the like
CH183165A (en) * 1935-05-10 1936-03-31 Cronshaw Clegg Eric Card sliver.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013037074A1 (en) * 2011-09-16 2013-03-21 Graf + Cie Ag Clothing for a flat of a carding machine
WO2014135941A1 (en) 2013-03-06 2014-09-12 Graf + Cie Ag Foundation for a clothing of a carding machine

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