JPS59125931A - Apparatus for preventing yarn slackness - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to prevent the yarn, which is pulled out under tension from the yarn feeder by the drive of the drum for winding the yarn, from being affected by the emotional When the tram etc. resumes driving, the thread sag is pulled out by the tram, etc., and the thread sag is pulled out indefinitely, causing the thread winding on the drum, etc. to be erratic, or when a large number of threads are In order to prevent the yarns that have drooped from intertwining and becoming tangled when being pulled out from the yarn feeder, arranged in parallel, and fed to a drum, etc., in the yarn feeding path from the yarn feeder to the drum, etc. A thread gripping device is provided at the thread gripping device, and normally the thread gripping device is loosened so that it does not become a resistance to the thread running.
This relates to a device that automatically drives a thread gripping device by activating or deactivating an electromagnetic device such as a solenoid or electromagnet in response to a drive stop signal for a drum, etc., to grip the thread and prevent thread drooping. be.

An embodiment of the present invention will be described.

Fig. 1 shows an example of the outline of a warping machine, in which yarns a drawn out from the snake yarn feeder 2 of each of a large number of bobbins I are passed one by one through a yarn guide 3, and then passed through an alignment plate 4 to be shaped. They are arranged in parallel according to their density and then guided to the warping drum 5. The warping drum 5 is rotatably driven by a drive system powered by a motor to draw out a large number of yarns a under tension. figure)
is provided, and when any one yarn is cut, a stop signal is sent from the detection device and the warping drum 5 is stopped urgently. Each detection speed is approximately 1/100 seconds, relay activation time is I7300 seconds, and braking device activation speed is 1/10
The warping drum completely f or stops approximately 1.1 seconds after the accident is detected (during this time, the yarn a is pulled out to a length of 4 to 6 m. Even if the attachment is on the drum, there is not much difference from the above).

Fig. 2.3 shows an example of the thread droop prevention device A of the present invention, in which an electromagnet 12 that operates together with the drive of a coil 13 is attached to the support arm 11, a disk 14 is formed on the end face of the electromagnet 12, and the disk An L-shaped arm 15 is attached to the eccentric part of the disk 14 and is parallel to the disk 14.

Then, the magnetic roll 16 is loosely fitted to the arm 15, the stopper 17 prevents it from coming off, and the disk 14 and the magnetic roll 16 allow the thread a to pass through! & configuring the housing 18.

The device shown in Fig. 2.3 has a structure in which the coil 13 is driven by a thread breakage signal or a power outage signal, and normally the electromagnet 12 is not activated as shown in Fig. 2, so the magnetic roll 16 is driven by gravity. As shown in the figure, it is supported by the arm 15 to form a gap 19 that allows the thread a to pass through the latching device 18 without resistance, and the electromagnet 12 is driven as shown in FIG. The roll 16 is attracted to the disc 14 and the thread a is clamped by the clamping device 18, and the excitation force of the coil 13 is mvI so as not to cause a strong clamping action on the thread a. It is also possible to allow the warping drum 5 to be pulled out by inertial rotation until it completely stops. Such magnetic force adjustment can be freely performed using an imu device for applying a voltage to the coil 13.

The above example shows an example in which the electromagnet 12 is used as an example of an electromagnetic device, but an arm is attached to the plunger of a solenoid that is separate from the disk, and a magnetic roll (in this case, a magnetic roll) is used to excite and drive the solenoid. ) is moved and joined to the disk, thereby making the third
It is also possible to produce a biting motion similar to the one shown in the figure.

The yarn droop prevention device A illustrated in FIG. 2.3 is a device in which a clamping device 18 is installed close to each yarn feeder 2 as shown in FIG. 1, and is attached by a support arm 11. When the warping drum 5 is braked to stop due to the above-mentioned cause, the thread a pulled out from the yarn feeder 2 is caught by the thread a, which is pulled out from the thread feeder 2 by the threading device 18 along with the thread breakage detection signal or the electric body detection signal. This prevents the yarn a running between the device 18 and the warping drum 5 from being pulled out due to the inertia of the warping drum 5, and prevents the yarn a from sagging when the vl warping drum 5 resumes operation.
The slack parts of the threads may get caught up and disturb the alignment, or the threads may get entangled with each other and wrap around the drum 5.
This is to prevent thread breakage.

As clarified from the above description, the present invention provides for the passage of the yarn a between the yarn feeder and the yarn winding drum, etc.
Normally, this device does not act as a resistance to the passage of the thread a, but is equipped with a thread-clipping device that is activated by an electromagnetic device that is driven or deactivated by a signal from a thread breakage or an electric body. As a result, the thread traveling towards the drum etc. is pulled out by inertia, which can prevent the thread from sagging, which causes various thread accidents. This can be freely prevented by adjusting the magnetic force of the electromagnetic device, which has the effect of configuring a device that is extremely advantageous in practice.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a schematic plan view, FIG. 2 is a side view, and FIG. 3 is a front view in longitudinal section of the center. a → yarn 2 - yarn feeder 11 - support arm 12 - electromagnet (electromagnetic device) 18 - latching device 19 → loose applicant Osamu Sato 2 strands 2 Figure 3 Figure 1

Claims (1)

[Claims] A thread gripping device is installed in the passage of thread a between the thread feeder and the drum for winding the thread, and the thread is hung in the normal state, but there is no running resistance. A thread droop prevention 1L characterized in that an electromagnetic device such as a solenoid, an electromagnet, etc., which is activated or deactivated to cause a thread biting action, is connected to the