DE2844285A1 - Gripper loom weft location - with motor control block and micro-switches to inch loom for opening to locate broken weft - Google Patents

Abstract

In the mechanism to locate a broken weft in a gripper loom, there is a stud which moves axially on the weft box. In front of the stud there is a micro-switch and a pivoting spring, connected by a control block with the geared motor. The motor supports spaced cam at one end of a two-armed lever close to a micro-switch. This switch is linked through the control block with the coupling to drive the mechanism to form the opening. System frees the operative from inching the loom to look for the broken weft, and increases the servicing front of the loom as maintenance time is reduced. It can be mounted to other looms, in a simple and cheap construction.

Description

SHIP V. FÜNER STREHL SCHOBEL-HOPF EBSINGHAUS FINCK _

DEA-18865

description

The invention relates to a device for finding a torn weft thread in rapier looms.

A mechanical device for finding a broken weft thread in rapier looms is known, which has a motor reducer group, Dental sectors and cams mil; Microswitches for Has switching off the device. The fundamental disadvantage of this device is the complicated construction and the particularly low mechanical engineering and operational reliability of the dental sectors.

An electromechanical device for locating is also known of torn weft threads, a motor reducer, an electromagnetic clutch, a cam with microswitch for switching on and a cam with microswitch for switching off the device.

The main drawbacks of this device are the lack of automation in the execution of the cycle, with that of the worker Manually performed manipulations require additional labor, as well as the uncontrolled return of the Handle in the starting position, which there is a risk of physical damage to the operator in the area of rotation draws itself.

The object of the invention is to provide a device for finding a to create torn weft thread, in which manual work is excluded and the deactivation of the mechanism

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to create an opening from the main drive of the loom and automatically start it up by increasing an information signal take place.

This object is achieved by a device in which a support is attached to the weft box of the loom, which touches a flat spring, in front of which a microswitch is mounted, which is connected to the motor reduction group by means of a Control block is connected. The motor reducer group is connected to a spatial cam, which is at one end of the two-armed Lever that switches the mechanical clutch of the loom on and off, is arranged. Near the two-armed A microswitch is mounted on the lever, which is connected to the electromagnetic clutch via the control block is to which coupling a gear is rigidly attached, which is used to drive the mechanism for forming the opening is determined. A rod is attached to the two-armed lever to drive the mechanism for executing a shot.

The device according to the invention has the following advantages: it frees the worker from the need to identify the cause of To seek the cessation of the work of the loom allows a front extension of the operation of the looms, since the time for operating a loom is thus reduced, has a simplified construction and can easily be attached to the already existing manual devices for finding broken weft thread.

The drawing shows an embodiment of the invention Contraption.

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28U285

The device consists of an ejector pin 1 on the shot box 2 of the loom is attached. By means of a flat spring 3 »a microswitch 19 and a control block 4 is the pin 1 with the electric motor of the gear motor (motor reducer group) 5 »connected. There is a lamp on the control block 4

6 attached, which signals a broken weft thread. The gear motor 5 is connected to the mechanical coupling 10 by means a chain drive 7, a spatial cam 8 and a two-armed lever 9 connected by means of the electromagnetic Clutch 11, -on the bell of which the sprocket 12 is rigidly attached, the gear motor 5 with the mechanism 13 for Forming an opening connected. The two-armed lever 9 is by means of the switch 18 through the control block 4 with the electromagnetic Coupling 11 connected and by means of the rod 14 with the mechanism for carrying out a shot when starting of the loom after removing a torn weft.

The control block can send a signal to drive the gear motor not only from pin 1, but also from switches 16 and 17 get for straight or reverse gear.

The device works as follows: When a weft thread is torn the pin 1 is removed from the carriage 15 of the shot observer, which is not shown in the drawing is set in motion. During this movement, it acts on the microswitch by means of the spring 3 19, which switches on the chain of the control block 4. The control block feeds the motor of the geared motor 5 with a electrical voltage. At the same time the signal lamp 6 is switched on. The gear motor 5 sets by means of the chain drive

7 the spatial cam 8 in motion, which deflects the two-armed lever 9 which switches off the mechanical clutch 10. on

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in this way the mechanism 13 for forming an opening disengages from the main drive of the loom. At the same time there the two-armed lever 9 when it is deflected by means of the switch 18 sends a signal to the control block 4, the electromagnetic Clutch 11 switches on. That on the bell of the electromagnetic Clutch 11 permanently mounted sprocket 12 drives the engine 13 forming the opening opposite to a normal one Movement of the loom until the position "found weft" is reached. When it is deflected, the lever 9 displaces the Rod 14, which is the mechanism for carrying out a weft when starting the loom after removing a torn Weft thread (not shown in the drawing), switches on.

At the end of the work sequence of the geared motor 5 or the mechanism 13 for forming the opening, the cam 8 is also located its lower part opposite the two-armed lever 9. After completion of the operation, the mechanical coupling take together with the two-armed lever 9 their starting position. The lever 9 triggers the switch 18 which is the electrical circuit interrupted and the device is ready for the next switch-on.

If the engine is switched on two or more times to create an opening in a straight line or in the opposite direction appears necessary, the signal is fed directly from the switches 16 and 17 to the control block 4.

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Claims (3)

PA "" ΕΚΤΑ Κ WA LT £ SHIP ν. FÜNER STREHL SCHUBbL-HOPF EBBINGHAUS FINCK MARIAHILFPLATZ 2 & 3, MÖNCHEN 9O POST ADDRESS: POST BOX 95 OI 6O, D-8OOO MÖNCHEN 95 PROFESSIONAL REPRESENTATIVES ALSO BEFORE THE EUROPEAN PATENT OF DIPLICE. CHEM. DR. ALEXANDER V. FÜNER DIPL. ING. PETER STREHL DIPL. CHEM. DR. URSULA SCHÜBEL-HOPF DIPL. ING. DIETER EE) EaINGHAUS DR. ING. DIETER FlNCK TELEFON (089) 48 2054 TELEX 5-23 S6S AURO D TELEGRAMS AUROMAFiCPAT MUNICH SK »VITEX» DEA / G-18865 October 11, 1978 DEVICE FOR DETECTING A TORN WEFT THREAD IN GRAPPLE LOOMS Patent claims 1. Apparatus for finding a broken weft thread in rapier looms that have a geared motor, an electromagnetic one Coupling, a two-armed lever connected to a mechanical coupling, a shot box and an engine for forming the opening, characterized in that on the shot box (2) a pin (1) is attached so that it can move axially, mnn ι τ '■ .ms in front of the one. Microswitch (19) contacting spring (3) is articulated via a control block (4) is connected to the gear motor (5), which carries a spatial cam (8), which at one end of the two-armed Lever (9) is arranged, in the vicinity of which a microswitch (18) is located, which via the control block (4) with the coupling (11) for driving the mechanism for forming the opening is connected. 2. Device according to claim 1, characterized in that that the two-armed lever (9) fixed to the rod (14) for driving the mechanism for carrying out a Shot is connected. 3. Device according to claim 1, characterized in that that connected to the control block (4) switch (16) for the straight gear and switch (17) for the reverse gear are. η 3 π η