JPH0589470U - Yarn breakage detection device for spinning and twisting machines - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to make a yarn breakage detection device for a spinning machine and a twisting machine smaller, attachable to many kinds of machines, and easy to additionally attach to existing machines. And A spinning machine and a twisting machine, each of which has a pair of electrodes arranged in proximity to a running yarn, and a connecting material for connecting the electrodes to a corresponding AC amplifier is shielded against static electricity as a whole. In the yarn breakage detector, the electrode (2), the connecting material (3) and the AC amplifier (4) are protected in the shielded and insulated housing (1), and the housing (1) is protected by the clamp means (5). Mounted on the thread guide (6), the shield of the housing (1) is open towards the thread (7) on the side of the electrode (2).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a yarn breakage detecting device for a spinning machine and a twisting machine.

[0002]

[Prior Art]

 As a device of this type, conventionally, a type having a pair of electrodes arranged in proximity to a traveling yarn and a connecting material for connecting the electrodes to a corresponding AC amplifier is shielded against static electricity as a whole. Things are known. Such a device monitors the traveling yarn and sends a signal to a display or a stopping device when a yarn breakage occurs.

Many types of non-contact detection devices or sensors for yarn breakage already exist, such as the one disclosed in DE-A 3720602. This device has the advantage over other types that it is open to the thread and does not require additional threading.

[0004]

[Problems to be solved by the device]

 However, the yarn breakage detection device that has been widely used in the past has a drawback in that it is troublesome to mount it on a spinning machine and the like, and that it takes time to adjust it when accurately positioning the yarn. This presents a major problem in the manufacture and installation of yarn breakage detection devices. For example, in a spinning machine, one machine has 600 to 1000 spindle points, which results in a great deal of cost for manufacturing and installing the yarn breakage detection device.

The present invention provides a yarn breakage detecting device of this type that is small in size, requires little space, and can be attached to many types of machines, and can be easily and additionally attached to existing machines. The purpose is to provide. Another object is to enable the above-mentioned detection device to be accurately positioned at each spindle point. Furthermore, the purpose of the structure is to prevent dust from adhering and to obtain a long life with minimal maintenance.

[0006]

[Means for Solving the Problems]

 According to the invention, said object is that the electrode, the connecting material and the AC amplifier are protected in a shielded and insulated housing, the housing is attached to the thread guide by the clamping means, the shield of said housing being on the side of the electrode. It is achieved by making it open in the direction of the thread.

In the present invention, as a part of the yarn breakage detection device, an inexpensive and small plastic housing having a metal surface is adopted. The sensing device and its housing are precisely mounted in a predetermined operating position close to the thread. This operating position is maintained even after the thread guide is often pulled up with the rotatable thread guide flap. Further, by fixing the housing to the thread guide, it is not necessary to newly adjust the position after the thread guide is positioned with respect to the center of the spindle. The connecting position of the thread guide and the thread breakage detection device screwed to the thread guide is adjusted by sliding the housing in the adapter attached to the thread guide flap. Furthermore, if the above adapter is used, one type of housing can be used for various types of machines. By using the above housing, the yarn breakage detection device and its attachment can be minimized, the burden on the operator of the machine can be reduced, and the adhesion of dust to the electrodes can be prevented.

By connecting a pair of electrodes to the rear AC amplifier, a twisted yarn is sandwiched between a pair of confined electrodes, as compared with a yarn breakage detection device, which is caused by the arrangement. It is possible to avoid inconvenience in terms of physical characteristics. Since the electrodes in the housing, the connecting material, and the AC amplifier can be shared by each weight, the cost can be reduced, the mounting can be facilitated, and the most preferable signal / noise ratio can be obtained. The response sensitivity of the thread breakage detection device can also be adjusted.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a yarn breakage detecting device of the present embodiment, which is attached to a yarn guide flap 10 of a spinning machine, and the detecting device is attached to a yarn guide 6 later. The yarn guide flap 10 is rotatable at its base around a member that supports it. The thread guide 6 is supported by the thread guide flap 10. The thread guide 6 is slidably guided in its longitudinal direction in a groove (not shown) formed inside the thread guide flap 10, and the thread guide 6 is set at a predetermined position by a screw 16.

According to the present invention, the housing 1 of the yarn breakage detecting device is firmly fixed to the yarn guide 6 by inserting the bracket 5 into the groove 8 of the yarn guide 6 and screwing it. The housing 1 is slidably guided in the hollow part of the adapter 9 which is tightly attached to the thread guide flap 10 by means of screws 17. The thread 7 penetrates the thread guide 6 and travels close to the front surface of the housing 1. On the front surface of the housing 1, a pair of electrodes 2 adjacent to each other is arranged facing the spindle 16.

Therefore, the housing 1 supporting the electrode 2 slides in the adapter 9 so that the electrode 2 is initially adjusted and set to a predetermined position with respect to the yarn guide 6. The distance between the yarn breakage detection device and the yarn 7 is initially adjusted only once. The thread guide 6 has the groove 8 so that the installation and replacement of the thread breakage detection device can be simplified without the need for re-adjustment. There is no need to readjust the position of the thread guide 6 relative to the center of the spindle, and even if the thread guide flap 10 is repeatedly pulled up, unlike the conventional one, the position of the thread breakage detection device once adjusted is not It has no effect. The fact that the housing 1 is firmly fixed to the thread guide 6 realizes an essential simplification of the thread breakage detecting device for the roller for the purpose of the present invention. Without this, re-adjusting an extremely large number (600 to 1000 depending on the machine) of the yarn breakage detection device would be extremely difficult work. In the present invention, once the housing 1 of the yarn breakage detection device is set, the response time and / or the response sensitivity of a large number of yarn breakage detection devices are controlled by a control device (not shown).

FIG. 2 is a view showing a yarn breakage detecting device of this embodiment and parts for holding the same. The outer surface of the insulating housing 1 is the surface of the metal layer except the front surface. The surface of this metal layer, the grounded yarn guide 6 and the yarn guide flap 10 extremely well shield the yarn breakage detection device. When the yarn breakage detecting device is attached to the yarn guide flap 10, the metal is used to shield the yarn guide flap 10 from above. Possible interference at the front of the housing 1 is electrically avoided by a pair of electrodes 2 connected to an AC amplifier (differential amplifier). The connection member 3 connected to the electrode 2 and the AC amplifier are connected to one common substrate 13, and the substrate 13 can be simply installed at a predetermined position in the housing 1. As one method, as shown in the figure, two open grooves 15 are formed in the front position of the housing, and the electrode 2 connected to the substrate 13 is pushed therein. In the illustrated example, the adapter guides the housing by sliding the housing in the adapter 9 attached to the thread guide flap. At the back of the housing 1 and the adapter 9, an opening having a cleat 11 for the wiring 12 is formed laterally so as not to damage the wiring 12 during rotation of the thread guide flap 10.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall appearance of a device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing each part of the apparatus of FIG. 1 in a separated state.

[Explanation of symbols]

 1 Housing 2 Electrode 3 Connection Material 4 AC Amplifier 5 Clamping Means 6 Thread Guide 7 Thread 8 Groove 9 Adapter 10 Thread Guide Flap 11 Cleat 12 Wiring 13 Board 14 Groove 15 Open Groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Bernhard Schönk, Germany, 7024 Filder Schutt 3, Harthausen, Birhelm Buschstrasse 15 (72) Inventor, Alfred Glock, Germany, 7000 Stuttgart 50, McClellenbeek 17

Claims (8)

[Scope of utility model registration request] 1. A spinning machine and a twisting machine having a pair of electrodes arranged in proximity to a running yarn, and a connecting material for connecting the electrodes to a corresponding AC amplifier is shielded against static electricity as a whole. In the yarn breakage detection device for the electrode (2), the connecting material (3) and the AC amplifier (4) are protected in the shielded and insulated housing (1), and the housing (1) is clamped (5). ) By thread guide
Thread breaker for a spinning machine and a twisting machine, characterized in that it is attached to (6) and the shield of the housing (1) is open towards the thread (7) on the side of the electrode (2). Detection device. 2. The clamping means (5) comprises a bracket provided on the housing (1), and the thread guide (6) is provided with a groove (8) for locking the bracket. Item 1. A yarn breakage detection device for a spinning machine and a twisting machine according to Item 1). 3. The spinning machine and the twisted yarn according to claim 1) or 2), wherein a shielding adapter (9) for guiding the housing (1) is attached to the yarn guide flap (10). Yarn breakage detection device for machine. 4. The housing (1) or adapter (9) is
Claims 1) to 3) in which an opening having a cleat (11) for holding the wiring (12) is provided in the rear part.
A yarn breakage detection device for a spinning machine and a twisting machine according to one of the above. 5. An electrode (2), a connecting material (3) and an AC amplifier.
The spinning machine and the twisting machine according to any one of claims 1) to 4), wherein (4) is connected to one substrate (13) inserted into the housing (1). Breakage detection device for. 6. The housing (1) is provided with a groove (14) for a connecting material (3), said groove being at the front of the housing.
One of claims 1) to 5), which extends from the position of (2) to the position of the substrate in the housing.
A yarn breakage detection device for a spinning machine and a twisting machine. 7. The opening groove (15) or a connecting means for holding the electrode (2) is provided in the front part of the housing (1), as claimed in claim 1) to claim 6). 2. A yarn breakage detection device for a spinning machine and a twisting machine. 8. An electrostatic shielding member of the housing is a thread guide.
The yarn breakage detecting device for a spinning machine and a twisting machine according to any one of claims 1 to 7, which is grounded by contact between the (6) and the yarn guide flap (10).