JPS61625A - Apparatus for detecting cutting of thread and stopping the same in thread making machine - 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 Field of Industrial Application The present invention relates to a device for detecting yarn breakage and stopping the yarn in a yarn manufacturing machine, particularly a spinning machine, which detects yarn breakage and stops the yarn. The present invention relates to a type having at least one rechargeable movement sensor guided on a track extending along a plurality of arranged spindles.

PRIOR ART AND DISADVANTAGES In known devices of this type, the movement sensor is arranged in a circulating blowcart of a thread-making machine. However, this known device has the disadvantage that it is not possible to accurately determine the point of thread breakage. This is because in this case it cannot be guaranteed that the blowcart passes each spinning station at regular intervals. In addition to this, there is also the disadvantage that the instability of the blow-cart traveling mechanism causes relatively large problems.

This also applies in a variant embodiment in which the movement sensor is arranged on a circulating spinning or dosing trolley. Such carts pass the spinning station only irregularly, and it is impossible to predict when they will pass. Furthermore, such trolleys may be changed over by workers, so that it is not possible to track individual spinning locations in time.

In principle, photoelectric sensors are located within the range of the ring stand and therefore within the operating range of the yarn manufacturing machine, making them difficult to control and requiring a relatively large space, such as inductive sensors. It has advantageous properties compared to other known sensors.

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to improve a device of the type mentioned at the outset, which makes it possible to recognize thread breaks in a timely manner with high reliability and precision, and also to stop the supply of roving when a thread break occurs.
It is an object of the present invention to provide a device that does not impede the operability of a yarn manufacturing machine in this case.

Means for Solving the Problem In order to solve this problem, the present invention provides a configuration in which a rechargeable movement sensor is provided on a carriage for actuating the roving stop device and on the carriage and directed towards the yarn. and at least one glass fiber cable, and the trajectory of the carriage is arranged behind the running thread of the thread making machine such that the photoelectric movement sensor moves behind the running thread of the thread making machine. It is located in

Functions and Effects of the Invention The device constructed as in the present invention can run behind the yarn running under the drafting machine without any hindrance and completely independent of other devices; A very reliable glass fiber optical system is used to detect thread breakage, so it works very reliably.

Embodiments In the embodiment of the invention, it is advantageous if the movement sensor has two fiberglass cables oriented at an angle to one another, preferably at right angles. In this case, it is possible to connect one fiberglass cable to the transmitter and the other fiberglass cable to the receiver, so that the transmitter and receiver operate in a clock-controlled manner and are clock-controlled from the transmitter. The emitted light impinges on the thread, where it is reflected and received by a receiver.

The device according to the invention can save a considerable amount of space and, in particular, can be arranged in such a way that the operability of the thread-making machine is not impaired.

In this case, it is advantageous if the device is guided along a track extending between the underside of the drafting machine, the yarn and the upper edge of the yarn production frame. It is also always possible to suitably equip a given thread-making machine with a device consisting of a small number of components.

In a further advantageous embodiment of the invention, the carriage has a toothed belt as the drive, which toothed belt is guided via an associated drive gear. In this case, the toothed belt may additionally be guided via tension rollers. In this way, the toothed belt allows accurate positioning of the carriage provided with the movement sensor. It is also advantageous if a suitable drive for the toothed belt has a position transmitter. Furthermore, the drive device for the toothed belt can also include a stepping motor. In this case the device is controlled and monitored by a microprocessor which is also used for data processing.

If two carriages equipped with movement sensors are fixed to the toothed belt, and the carriages pass in opposite directions to opposite sides of the thread-making machine, the monitoring function of the device is is improved.

In another embodiment of the invention, the toothed belt has, on the side opposite the teeth, a contact wire for energy supply and/or signal transmission, over which the toothed belt can slide. If the slip contacts are installed in a fixed position on the thread-making machine, the problems of signal transmission and energy supply to and from the stop device and the movement sensor can be easily solved. In addition, a fast-charging accumulator can also be arranged on the carriage for energy supply. This fast-charging accumulator can be charged, for example, upon reaching a starting point in a thread-making machine.

In a further advantageous embodiment of the invention, each roving entry is provided with a roving stop device which is actuated and closed by a carriage, the roving stop device consisting of a roving clamp; The roving clamp is arranged on a pivot lever that cooperates with a locking pawl that is released by a carriage.

The carriage preferably has a stop device that acts on the roving stop device.

The roving clamp forming the roving stop device may also be constructed as a plug that fits snugly into the roving hole through which the roving runs.

In an advantageous embodiment of the roving stop mechanism, the pivoting lever is a two-armed lever consisting of an arm cooperating with a locking pawl and the other arm having a roving stop device, the stop device being a locking device. It is an electromagnet that separates the claws. When thread breakage is confirmed and the electromagnet is activated, the electromagnet releases the locking pawl, allowing the swing lever to swing. The plug acting as a roving stop device is a cone whose free end has a smaller diameter than the roving hole and the other end has a larger diameter than the roving hole. Advantageously, the plug constructed in this way falls into the roving hole and, in cooperation with the roving hole, clamps and secures the roving there. If the roving is drawn in further by the drafting machine, the feeding of the roving is interrupted, so that, for example, neither the roving nor the yarn reaches the downstream suction channel.

In this case winding of the thread is also avoided.

In a further advantageous embodiment of the invention, the electromagnet has a plunger-shaped armature, the locking pawl has a corresponding receptacle for this plunger-shaped armature, and the locking pawl is additionally spring-loaded. has been done.

With this arrangement, the locking pawl releases the pivot lever only when the plunger-shaped armature of the electromagnet is actuated. In order to compensate for the time delay between yarn break recognition and electromagnet actuation, it is advantageous if the electromagnet is arranged at the rear end of the carriage, viewed in the direction of movement of the carriage.

The pivot lever may be fixed together with the roving thread hole to the frame of the thread manufacturing machine. The associated detent pawl can also be pre-attached to the holding strip and fixed to the frame of the thread-making machine.

Embodiment The illustrated spinning machine has a pedestal 1, and a plurality of roving bobbins 2 are suspended from the upper part of the pedestal 1.

A drafting machine 3 is provided below the roving bobbin 2, and the drawn-out roving 4a is drafted in this drafting machine 3, passes through the drafting machine 3, and then is passed through the yarn nozzle as yarn 4. 5a
It advances from there and is wound around the bobbin 7 located on the spindle 6.

Particularly, as can be clearly seen from FIG. A rail 9 for the row 210 of the carriage 11 of the displacement sensor 22 and a further L-shaped rail 12 for the sliding shoe 13 of the carriage 11 are arranged. The rails 9 and the L-shaped bars 12 each extend over the entire length of the spinning machine on both sides of the spinning machine if the spinning machine is configured on both sides as in this embodiment.

As shown in FIG. 4, a closed toothed belt 14 is connected to both sides of the carriage 110, and this toothed belt 14 extends parallel to the rail 9 or the L-shaped rail 12. The end face side of the spinning machine has a trajectory as shown in FIG. On this end side, the toothed belt 14 has tension rollers 15, 16, deflection rollers 17.
18 and a drive gear 19. The tensioning roller 15.16 can be moved in the longitudinal direction of the spinning machine in the associated spindle 20.21 by means of a spindle drive (not shown).

The drive gear 19 has a drive (not shown), which can be an asynchronous motor or a stepper motor with a transmission and a step transmitter. When the drive is activated, the toothed belt 14 is circulated step by step, with the carriage 11 passing successively past the spindles 6 on both sides of the spinning machine.

As can be seen from the comparison between FIG. 4 and FIG. .24 is arranged above the carriage 11 with its end facing the thread 4. In this case, the ends of the two glass fiber cables 23, 24 are arranged at right angles to each other. Although not shown, the casing 22a of the movement sensor 22 is provided with a transmitter and a receiver. One fiberglass cable 23 transmits clocked light emitted by a transmitter, which is reflected at thread 4 .

This reflected light is received by the other glass fiber cable 23 and processed in the receiver.

Furthermore, the carriage 11 has at its rear end, seen in the direction of movement, an electromagnet 25 with a plunger-shaped armature 26 as a stop device.

For supplying energy to the carriage 11 and for transmitting signals from and to the carriage 11, the toothed belt 14 has contact wires 27 to 31 on the outside, as shown in FIG. Contact wire 27
. . . 31 are assigned to the spinning machine fixed-position slip contacts (not shown), which can slide over the contact wires 1- of the contact wires 27-31. The carriage 11 may additionally have a fast-charging accumulator (not shown) supplying energy to the transmitter and receiver as well as the electromagnet 25.

As shown in FIG. 7, the roving stop device 33 is
The spinning machine has a two-armed turning lever that is supported in a fixed position, and one arm 32 of this turning lever is connected to the roving thread hole 5.
, and has at its free end a roving clamp configured as a conical plug. The free end of this roving clamp has a smaller diameter than the roving hole 5, and the other end has a larger diameter. Further, the free end of the arm 32 is provided with a colored mark 34, for example.
is placed, and this mark 34 tells the worker to
It is useful to indicate the respective position of 2.

The other arm 35 of the pivoting lever extends below the plane of the roving hole 5 to a locking pawl 36 and
6 is likewise supported on the spinning machine and is pulled in the locking direction by a spring 37. The locking pawl 36 has on its underside a corresponding receptacle 38 for the plunger-type armature 26 of the electromagnet 25, in which case the electromagnet 25 or its plunger-type armature 26 is located in the area of the spindle 6 to which the carriage 11 belongs. is activated while located at the Electromagnet 25
is activated when thread breakage occurs, and at this time electromagnet 2
The plunger type armature 26 of No. 5 advances in the direction of the arrow 39 and rotates the locking pawl 3G.
Release the arm 35 of the arm-shaped pivot lever. As a result, the stopper, which is the roving stop device 33 fixed to the arm 32, falls into the roving thread passage hole 5, where it firmly clamps the roving thread 4.

This interrupts the feeding of the roving.

In particular, as shown in FIG. 2), the movement sensor 22 requires only a small amount of space. The movement sensor 22 is arranged so that it does not interfere with the operation and functioning of the spinning machine and does not require additional space. Furthermore, by driving the carriage 11 via a suitable motor equipped with a position transmitter and the toothed belt 14, the position of the carriage 11 at each point in time can be accurately known, making it possible to use the latest control technology. becomes possible to use.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view schematically showing a spinning machine, Figure 2 is an enlarged view of a part of the spinning machine shown in Figure 1, and Figure 3 is the spinning machine shown in Figure 1. FIG. 4 is a plan view showing an enlarged view of the movement sensor, FIG. 5 is a side view of the movement sensor shown in FIG. 4, and FIG. A side view showing an enlarged part of the attached belt,
FIG. 7 is a schematic illustration of the roving stop mechanism. 1. Frame, 2. Roving bobbin, 3. Drafting machine, 4.
Yarn, 4a... Roving, 5... Roving thread through hole, 5a... Thread nozzle, 6... Spindle, 7... Bobbin, 8... Triangle, 9... Rail, 10... Roller , 11... Carriage table, 12... L-shaped rail, 13... Sliding shoe, 14
... Toothed belt, 15.16 ... Tension roller, 17
．． 18... Direction changing roller, 19... Drive gear, 20.21
...Slit, 22...Movement sensor, 22a...
Casing, 23.24・Glass fiber casing,
25...Electromagnet, 26...Plunger type armature, 27
~31... Contact wire, 32.35... Arm, 33... Roving stop device, 34... Mark, 3
6...Latching claw, 31...Spring, 38...Corresponding receiver, 39...-Arrow drawing group 1'H'H;pj'j No change in contents)FI
G, 1 FIG, 4 FIG, 5 1.24 °=')'Y, 2. I lol ) r-7
'll/Procedural Amendment (Method) July 1985 Noah Day

Claims (1)

[Claims] 1. A device for detecting thread breakage and stopping the thread in a thread manufacturing machine, which extends parallel to a spindle stand and along a plurality of spindles arranged on the spindle stand. of the type with at least one photoelectric movement sensor (22) guided on a track that moves along the carriage (11), which actuates the roving stop device (33). ) and at least one fiberglass cable (23, 24) arranged on the carriage and directed towards the thread (4), the photoelectric displacement sensor (22) detecting the running thread (4). 4) A thread making machine characterized in that the track of the carriage (11) is arranged behind the running thread (4) of the thread making machine so as to move behind the thread (4). A device that detects thread breakage and stops the thread. 2. The movement sensor (22) is connected to two fiberglass cables (23, 24) oriented at an angle to each other.
2. The device according to claim 1, having: 3. The device according to claim 2, wherein the two fiberglass cables (23, 24) are oriented at right angles to each other. 4. The carriage (11) uses a toothed belt (14) as a drive device.
), the toothed belt being guided via an associated drive gear (19). 5. The toothed belt (14) additionally has tension rollers (15,
16). The device as claimed in claim 4, wherein the device is guided through: 16). 6. Two carriages (11) equipped with movement sensors (22) are fixed to the toothed belt (14), and both carriages (11) are fixed to the toothed belt (14).
6. The device according to claim 4, wherein the threads 11) respectively pass in opposite directions on opposite sides of the yarn machine. 7. The toothed belt (14) has contact wires (27-31) for energy supply and/or signal transmission, and slip contacts that can slide over the contact wires are located on the yarn making machine. 7. The device according to claim 4, wherein the device is fixedly mounted. 8. Device according to one of the claims 1 to 7, characterized in that a fast-charging accumulator is arranged on the carriage (11) for energy supply. 9. Each roving entry section is provided with a roving stop device (33) actuated by the carriage (11);
An apparatus according to any one of claims 1 to 8. 10. The roving stop device (33) consists of a roving clamp, which roving clamp has a pivot lever (36) cooperating with a locking pawl (36) released by the carriage (11).
32, 35). 11. Device according to claim 9 or 10, characterized in that the carriage (11) has a stop device (25, 26) acting on the roving stop device (33). 12. The roving clamp forming the roving stop device (33) is constructed as a plug that fits snugly into the roving hole (5) through which the roving (4a) runs. The device according to scope 10 or 11. 13. The pivoting lever is a two-armed lever consisting of an arm (35) cooperating with a locking pawl (36) and the other arm (32) having a roving stop device (33); 13. Device according to one of claims 10 to 12, characterized in that is an electromagnet (25) for disengaging the locking pawl (36). 14. The plug that acts as a roving stop device (33) is a cone whose free end has a smaller diameter than the roving hole (5), and the other end has a smaller diameter than the roving hole (5). 17. The device according to claim 12 or 16, having a diameter larger than ). 15, the electromagnet (25) has a plunger type armature (26), and the locking claw (36) has a plunger type armature (26).
15. Device according to one of the claims 10 to 14, characterized in that it has a corresponding receptacle (38) for a device. 16. Device according to any one of claims 10 to 15, characterized in that the locking pawl (36) is spring-loaded. I7, the electromagnet (25) is connected to the carriage (seeing in the direction of carriage movement)
1) disposed at the rear end portion, claim 13
The device according to any one of paragraphs 1 to 16. 18. Device according to one of claims 4 to 17, characterized in that the drive of the toothed belt (14) has a position transmitter. 19. The device according to any one of claims 1 to 18, wherein the drive device for the toothed belt (14) has a step motor.