DE7400994U - Pneumatic thread catcher nozzle - Google Patents

Description

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The innovation relates to a pneumatic thread catching nozzle for textile machines, preferably automatic Kreuznpulrr.maschinen, with a nozzle that picks up the free thread end when the thread breaks.

Such nozzles have the task of immediately removing a yarn thread, for example from spinning / ops, in the event of a thread breakage to catch and the free thread end for the purpose of initiating the re-binding process in the nozzle opening suck in and hold there temporarily. Without this measure there would be a risk, among other things, that the cop, which no longer emits a thread, is ejected prematurely would.

In automatic cross-winding machines, it is known Use special suction nozzles for thread stop and re-tying. These nozzles are in the Re ^ oI above of the sensing frame between the cleaner and the sensing bridge of the dishwasher.

A constructive simplification can be achieved if Nozzles of a pneumatic

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table system can also be used to fix the thread ends. It can be nozzles, for example Blow a stream of air to clean into areas particularly prone to pollution. Of course a stream of blown air would not hold the thread end, but blow it away.

The innovation is based on the task of using an air flow as an alternative, that is, at the nozzle mouth to generate alternately positive and negative pressure.

The solution to the problem is, according to the innovation, that the thread catching nozzle is designed as an ejector nozzle, whose free opening can be closed by a valve that controls depending on a thread cut when the thread is unbroken is. In this case, the closure of the valve is in one via an emanating from a pulse generator Amplifier and relay element amplified current surge can be actuated by means of an electromagnet. In further training According to the innovation, the compressed air is supplied to the thread catcher nozzle almost tangentially. To with continuous To reduce the flow rate thread, a throttle device is built into the pipe socket.

082

Show it:

Figure 1 shows an automatic package winder with a thread catcher nozzle

in the blown air position, valve closed, Figure 2 shows a package author with thread catcher in Suction air position (ejector effect), valve open.

In FIGS. 1 and 2, an automatic package winder equipped with a thread catching nozzle according to the invention is shown schematically, partly in section. A thread 2 running off the spinning cop, after passing through a mechanical thread brake 3, among other things, passes the mouth 4 of a thread catching nozzle 5 and is finally wound onto a cheese 7 driven by a thread guide roller 6. On the thread path. I also have a so-called balloon brake 8 and an electrical pulse generator 9, the purpose of which is explained below in connection with other dividers. The thread catching nozzle 5 is connected to a compressed air line 10, from which the compressed air is fed approximately tangentially via a pipe socket 11 to the nozzle 5 without significant flow disturbances. In the operating position shown in FIG. 1, the vertical pipe end of the nozzle 5 is closed, for example by a closure of a valve which can be actuated by an electromagnet 12 . The compressed air introduced is dammed up in the lower end of the pipe in such a way that an upwardly directed blown air flow is created

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the nozzle 4 exits and can usually be used for cleaning purposes. After a thread break has occurred, as in Kirx -v 2 fi-ezei & t., A current surge is sent to the electromagnet 12 by the pulse generator 9 via a relay and amplifier element 14 and corresponding lines 15: that this spontaneously pulls the verse-must of valve Ij5 downwards and thus ^{opens the nozzle pipe l} ,>. Is ·, free thread end verübergehend held at this point as long introduced to the Wi Ede r-ankrrüpfungs operation and: characterized the introduced compressed air is deflected downwardly, co that sucked due Fjektorwirkung Umrebungsluft by the Düsenrr.ündung 4 and simultaneously there. is completed. Then the solenoid is de-energized via the relay l4, vas turn, we have kung that dex * example durcr pine bow spring acted upon closure of the valve 1 $ -schnellt up and the nozzle tube 5 closes again. The compressed air flow is reversed again and again emerges from the nozzle opening 4 as blown air. In order to reduce the flow velocity when the thread is running through, a throttle element (not shown) is expediently built into the pipe socket 11.

Claims (4)

W.ScWafhoPst & Co. 0b27 Ni / vdM Mönchengladbach January 11, 1974 143/145 Protection claims: 1. Pneumatic thread catcher for textile machines, preferably automatic cross-winding machines, with a nozzle that picks up the free thread end in the event of a thread breakage characterized in that the thread catching nozzle (5) having an orifice (4) at one end is an ejector nozzle, its free opening located at its other end through a control depending on a thread cut Valve (15) can be closed when the thread (2) is not broken is. 2. Yarn catcher nozzle according to claim 1, characterized in that the closure of the valve (13) via one of one Pulse generator (9) outgoing, in an amplifier and relay element (14) amplified current surge by means of a Electromagnet (12) can be actuated. 3. Yarn catcher nozzle according to claims 1 and 2, characterized in that that her the compressed air from the line (10) via a pipe socket (11) is supplied approximately tangentially will. Oo 27 4. Padenfangdüse according to claim ?, Characterized in that in the pipe socket (11) a Stron-un ^ scescnv.-indigkeit lowering throttle member is installed. 40099ΑΗΛ.74