JP5368164B2 - Monitoring device for monitoring at least one moving fiber sliver in textile machine drawing systems such as Nerushiki, card machines, combers - Google Patents

Abstract

A monitoring device 12 for a moving fibre sliver 7 comprises a deflecting element 12b, which is arranged to be deflected by the tensioned fibre sliver. Movement of the deflecting element upon loss of tension is monitored and may initiate a switching operation or produce an inductive pulse (figure 5). A tube 16 may have a slot receiving a number of deflecting elements each corresponding to a sliver. The tube may have one pole of a voltage source connected to it and the other pole may be connected to a counter-element 12a. When under tension the sliver maintains a gap "a" and upon loss of tension the deflecting element closes the gap completing the electrical circuit. Alternatively, movement of the deflecting element may cause an inductive pulse. The deflecting element may be a leaf spring or may have a compression spring (20, figure 4) located at one end. Preferably the monitoring device is used at a drafting system of a textile machine, for example, a draw frame, card, combing machine or the like, and is arranged in the vicinity of or within a device for feeding at least one fibre sliver 7 to the drafting system to detect breakage of the sliver.

Description

  The present invention relates to a monitoring device for monitoring at least one moving fiber sliver in a drawing system of a textile machine, such as a kneading machine, a card machine, and a comb, and comprising a monitoring element positioned in contact with the moving fiber sliver. It relates to a monitoring device that is used and is arranged in the vicinity of or in a supply device that supplies at least one fiber sliver to a drawing system.

  In the kneading machine, the fiber sliver is removed from the can and fed through a feeder to a pair of rollers on a feeding table of the drawing system. The supply device is arranged in the upstream section of the supply table of the drawing system. A can containing the fiber sliver to be treated is placed on either side or one side of the feeder. The fiber sliver of each can is drawn vertically upward from the can and turned 90 ° toward the kneading machine by the feeding device. All cans of fiber sliver are guided parallel to each other by the feeder. When the fiber sliver is transported to the kneading machine, individual fiber sliver may break. This is mostly attributed to the deficiency of the sliver being coiled. For this purpose, a monitoring device for detecting and transmitting a fiber break is placed in the fiber sliver transport path.

  The breaking machine is stopped by a fiber break signal, so that the operator can connect the ends of the broken fibers before the broken fibers enter the drilling machine. It is also possible to arrange the monitoring device inside the supply device or between the supply device and the training machine. Furthermore, the fiber sliver may stop. When the sliver is broken or stopped, the fiber sliver loses tension. When the fiber sliver supply rate is high, a problem arises that not all fiber breaks are reliably detected by the monitoring device. When the fiber sliver feed rate is high, the fiber sliver is relatively lightweight so that the end of the fiber sliver does not fall down to the depth of the height of the monitoring path before passing through the monitoring device, e.g. the light barrier. Yes, it can happen that the signal cannot be transmitted by the end of the dropped sliver. In such a case, the end of the sliver passes through the metering roller or the contact roller at the entrance of the training machine and is detected as a sliver break only at that point. In such a case, it is impossible to connect the ends of the sliver further, rather it is necessary to thread in the starting end of a new sliver. Connecting the ends of the sliver before entering the Nershino machine will consume a considerable amount of time.

  Therefore, the present invention solves the problems in forming monitoring devices of the type described above, avoids the disadvantages described above, and ensures that they are monitored in a short time when the fiber sliver breaks or stops. The object is to provide a simple monitoring device that can.

The problem described above is solved by the features of claim 1.
That is, according to the first invention, a monitoring device for monitoring at least one moving fiber sliver in a drawing system of a textile machine, using a monitoring element positioned in contact with the moving fiber sliver. A monitoring device arranged in the vicinity of or in the supply device for supplying at least one fiber sliver to the drawing system, the monitoring device being a monitoring element for the fiber sliver (7, 7a-7f) (12) and a conductive counter element that is part of a cylindrical body that is open on one side, the monitoring element (12) being disposed within the counter element and having a continuous slot A plurality of elastically tensionable plate bars each having one end engaged with the formed metal tube and the continuous slot of the metal tube And a portion of the remaining portions of the plurality of leaf springs is separated from the inner surface of the counter element when deflected by the tensioned fiber sliver and is not deflected by the fiber sliver A monitoring device is provided that sometimes engages the inner surface of the counter element to detect loss of tension in the fiber sliver .

  The monitoring element directly detects the loss of tension in the fiber sliver by contacting the fiber sliver and achieves quick and reliable monitoring in a simple manner. Furthermore, this increases the efficiency of the textile machine by shutting off quickly and safely when the at least one fiber sliver breaks or stops.

Claims 2 to 25 contain advantageous improvements of the invention.
According to a second aspect, in the first aspect, the tensioning fiber sliver is arranged such that the monitoring element is lifted with respect to the non-movable counter element.
According to a third aspect, in the second aspect, the monitoring element and the counter element form a switching device.
According to a fourth aspect, in the third aspect, the switch device can generate an electrical pulse when the monitoring element moves.
According to a fifth aspect, in any one of the first to fourth aspects, the monitoring element is curved in a convex shape.
According to a sixth aspect, in any one of the first to fifth aspects, the contact area of the monitoring element with respect to the sliver is smooth.
According to a seventh aspect, in any one of the first to sixth aspects, the tensioned fiber sliver elastically biases the monitoring element.
According to an eighth invention, in any one of the first to seventh inventions, the monitoring element is arranged to be biased by inherent elasticity.
According to a ninth invention, in any one of the first to eighth inventions, the monitoring element and the counter element cooperate as a contact switch.
According to the tenth invention, in any one of the first to eighth inventions, the monitoring element and the counter element cooperate as a non-contact switch.
According to an eleventh aspect, in the tenth aspect, the non-contact switch is a measuring device.
According to a twelfth aspect, in the eleventh aspect, the measurement device includes a proximity initiator.
According to a thirteenth aspect, in the eleventh aspect, the measuring device includes an inductive proximity switch.
According to a fourteenth invention, in any one of the first to thirteenth inventions, the movement is arranged to be activated by a loss of tension of the fiber sliver.
According to the fifteenth invention, in any of the first to fourteenth inventions, the loss of tension is caused by the stoppage of at least one fiber sliver.
According to the sixteenth invention, in any one of the first to fourteenth inventions, the loss of tension occurs through tearing or breaking of at least one fiber sliver.
According to a seventeenth aspect, in the third aspect, the switch device is connected to a stop device that stops the textile machine.
According to an eighteenth aspect, in the second aspect, the monitoring element and the counter element are connected to a voltage source.
According to a nineteenth aspect, in the eighteenth aspect, the counter element includes at least a metal.
According to the twentieth invention, in any one of the first to nineteenth inventions, the plurality of monitoring elements are attached to the holding element.
According to the twenty-first aspect, in any one of the first to twentieth aspects, a monitoring element is present for each fiber sliver.
According to a twenty-second aspect, in any one of the first to twenty-first aspects, the monitoring element is disposed between the supply device and the stretching system.
According to the twenty-third aspect, in any one of the first to twenty-second aspects, the monitoring element and the counter element are electrically insulated from each other.
According to the 24th invention, in any of the 1st to 23rd inventions, when the tension is lost, the fiber sliver is deflected downward by gravity.
According to the twenty-fifth aspect, in any one of the first to twenty-fourth aspects, the deflection element is spring-loaded.

1 is a schematic side view of a drafting system and a supply table of a shinoshino machine equipped with a device according to the present invention. It is a top view of the apparatus shown by Fig.1 (a). (A) A side view of a device according to the invention with a tensioned fiber sliver and a tensioned leaf spring, one end region of the leaf spring not contacting the counter element. (B) shows a device according to the present invention corresponding to FIG. 2 (a), the fiber sliver is not tensioned (hangs down), the leaf spring is not tensioned, The end region of the leaf spring is in contact with the counter element. FIG. 5 is a diagram showing an embodiment in which the other end region of the leaf spring is in contact with the counter element, and the leaf spring and the counter element are connected to a voltage supply source. FIG. 6 shows a spring loaded deflection element. FIG. 2 shows an embodiment according to the invention with a non-contact switch, in which an inductive displacement sensor is associated with a leaf spring.

The invention is described in detail below by means of exemplary embodiments shown in the drawings.
The side view according to FIG. 1 (a) shows a feeding area 1, a supply area 2, a drafting system 3 and a sliver deposition area 4 of a training machine, for example, a training machine TD02 manufactured by Trutzschler. In the supply area 1, the three spinning cans 5a to 5c (round cans) of Nershinoki are arranged in two rows below the sliver supply table 6 (creel), and the supply slivers 7a to 7c are sliver. It is drawn on the path change elements 8 a to 8 c, for example, a path change roller, a path change bar, etc., and supplied to the drafting system 3. The fiber slivers 7 a to 7 c are lifted from the spinning cans 5 a to 5 c and guided to the drafting system 3 through the sliver supply table 6. After passing through the drafting system 3, the drawn fiber sliver 7 'enters the rotating plate of the cancoiler 4 and is deposited in a coil in the delivery cane. The supply table 6 extends beyond the entire area of the sliver supply device to a distance as far as the training machine. The fiber sliver 7 is supplied from each of the spinning cans 5 to the training machine by the fiber sliver supply device. A guide element for guiding the fiber sliver 7 exists in the area of each sliver diverting element 8a, 8c. The letter A indicates the traveling direction of the fiber sliver 7a, 7b, 7c. At the supply end of the supply table 6 there is a guide device for the fiber slivers 7a-7f, which includes a horizontal bar 10 with a circular cross section. Eight cylindrical bodies 11 a to 11 h are attached to the rear side of the horizontal bar 10. The axial lines of these cylindrical bodies 11a to 11h are aligned in the vertical direction, and the distance between the body portions of these cylindrical bodies 11a to 11h allows the fiber slivers 7a to 7f to pass without impairing the movement of the fiber sliver. Big enough to do. In this way, an open guide channel at the top is formed for the fiber slivers 7a-7f. That is, the cylindrical bodies 11a to 11h serve as guide elements. The monitoring device 12 according to the invention is arranged downstream of the supply table 6 and upstream of the drafting system 3.

  As shown in FIG. 1B, on each side of the supply table 6, rows of three spinning cans 5 (not shown) are arranged in parallel to each other. In operation, each fiber sliver 7 can be withdrawn from all six spinning cans 5 simultaneously. Alternatively, the fiber sliver 7 may be exchanged from only one side, for example, only from the three spinning cans 5a to 5c, while replacing the spinning cans 5d to 5f on the other side. Further, on each side of the supply table 6, three sliver transformation elements 8a, 8b, 8c and 8d, 8e, 8f are sequentially arranged in the operation direction A, respectively. Each pair of sliver transformation elements 8a and 8d, 8b and 8e, 8c and 8f are arranged coaxially with each other. The length of the fiber sliver 7 in the supply region 1 decreases from the inside toward the outside. As shown in FIGS. 1 (a) and 1 (b), fiber slivers 7a-7f are monitored from the supply table 6 in the supply area 1 above the guide array (bar 10, cylindrical bodies 11a-11e). Below the device 12, it passes through the sliver funnel 14, drafting system 3, web guide 15, sliver funnel with take-off roller, and rotating plate 4.1 to run to Kens 4.2. To do.

  In FIG. 1 (b), the lower rollers III, II, I of the drafting system 3 are shown. According to FIG. 1 (b), in the region between the sliver diverting element 8 and the monitoring device 12, a synthesized fiber sliver consisting of six fiber slivers 7 receives the tension of the supply creel. In the region between the monitoring device 12 and the supply roller III of the drafting system 3, the synthesized fiber sliver composed of the six fiber slivers 7 receives the conveying tension.

The monitoring device 12 is associated with each of the fiber slivers 7a to 7f. The monitoring device 12 and the common counter element 12a (counter-element), contains six deflecting elements in the form of leaf springs _12b 1 _{~12b 6.} During operation, the fiber slivers 7a to 7f tensioned on the basis of the contents shown in FIGS. 1 (a) and 1 (b) are pressed against the leaf springs 12b _{1 to} 12b ₆ from below and pressed upward. As a result, the leaf springs 12b _{1 to} 12b ₆ are tensioned, and the leaf springs 12b _{1 to} 12b ₆ apply pressure to the fiber slivers 7a to 7f. When the fiber slivers 7a to 7f not applied tension, the pressure of the plate spring _12b 1 _{~12b 6} is (fall fiber slivers 7a to 7f) reduced or completely eliminated, as a result, the plate spring _12b 1 ~ 12b ₆ relaxes and returns almost or completely to their relaxed initial position (compare FIG. 2 (a) with FIG. 3).

As shown in FIGS. 2 (a) and 2 (b), the monitoring device 12 for the fiber sliver 7 includes a common counter element 12a and individual deflection elements in the form of leaf springs 12b. Yes. The counter element is in the form of a tube having a plurality of side surfaces or in the form of a part of a cylindrical body that opens on one side, and is made of, for example, a sheet metal. The leaf spring 12b is curved in a convex shape, and includes extended pieces 12 ₁ and 12 ₂ in each of the end regions. These extended pieces 12 ₁ and 12 ₂ protrude from the leaf spring main body at a substantially right angle. Extension piece 12 ₂ projects into a continuous slot in the tube 16, and is fixed to the tube 16. The tube 16 holds and holds all the leaf springs 12b _{1 to} 12b ₆ . Between the electrically connected inner surface of the open end of the extension piece 12 ₁ and the counter element 12a is gap a exists as shown in FIG. 2 (a). In operation, the tensioned fiber sliver 7 presses the leaf spring 12b against the outer lateral surface of the tube 16 and presses it in the direction of the outer lateral surface, so that the extension piece faces the counter element 12a. To lift up. When the sliver breaks, the tension of the fiber sliver 7 decreases and the sliver falls as shown in FIG. Therefore, the leaf spring 12 b returns to the relaxed initial position, that is, moves away from the tube 16. The free end of the extension piece 12 ₁ is pressed electrically connected inner surface of the counter element 12a, to close the electrical circuit functions as a contact switch by touching (see Figure 3).

Referring to FIG. 3, an electrical circuit is provided that includes a voltage source 17, a switch device 18, such as a mechanical disconnect switch, and a contact switch. The contact switch consists of a metal tube 16 on the one hand and a leaf spring 12b acting on the counter element 12a on the other hand. In the illustrated embodiment, the contact switch is closed by the area 12 ₃ located in the vicinity of the extension piece 12 _{and second} plate spring 12b is in contact with the counter element 12a. When the fiber sliver 7 is not tensioned, the leaf spring 12b loses its tension. One pole tube 16 of the voltage source 17, thus, is applied to all of the leaf spring _12b 1 _{~12b 6.} The other pole of the voltage source 17 is applied to the counter element 12a. The tube 16 and the counter element 12a are electrically insulated from each other.

Referring to FIG. 4, the deflection element 12b is such a metal sheet, one end region 12 _fourth deflecting element 12b is spring loaded by a supported compression spring 20 in the counter mounting portion 21, for example fixed .

According to FIG. 5, a non-contact switch is associated with the leaf spring 12b. For this purpose, an inductive displacement sensor 19 including a plunger coil 19 ₁ and the plunger motor 19 ₂ is associated with the extension piece 12 _1, a control device (not shown), for example, is electrically connected to the machine control unit ing. In the illustrated embodiment, the leaf spring 12b is tensioned during operation. When sliver breakage, and when the relaxation of the corresponding plate spring 12b is plunger coil 19 ₂ transmits an electrical pulse.

  It is also possible to use an inductive proximity switch, a photodetector or the like as a non-contact switch.

  The apparatus according to the present invention can be used in a training machine without leveling, for example, a training machine TD02 made by Trutzschler, or in a training machine with an auto leveler, for example, a training machine TD03 made by Trutzschler.

  In operation, the contact pressure of the tensioned fiber sliver in the elastically biased leaf spring is greater than the fiber sliver counter pressure, thereby causing the leaf spring to yield.

DESCRIPTION OF SYMBOLS 1 Supply area 2 Supply area 3 drafting system 4 Cancoiler 4.1 Rotating plate 4.2 Kens 5, 5a-5f Spinning cans 6 Supply table 7, 7a-7f Fiber sliver 8a-8c, Sliver diverting element 10 Horizontal bar 11a to 11h cylindrical body 12 monitoring device 12a counter element 12b _{1 to} 12b ₆ leaf springs 12 ₁ and 12 ₂ extended small pieces 12 ₃ region 12 ₄ end region 14 sliver funnel 16 tube 17 voltage source 19 inductive displacement sensor 20 compression spring 21 Counter mounting part 19 ₁ Plunger coil 19 ₂ Plunger motor

Claims (25)

A monitoring device for monitoring at least one moving fiber sliver in a drawing system of a textile machine, using a monitoring element positioned in contact with the moving fiber sliver, wherein at least one fiber sliver is connected to the drawing system A monitoring device that is arranged in the vicinity of or in the supply device to be supplied,
The monitoring device includes a monitoring element (12) for a fiber sliver (7, 7a-7f) and a conductive counter element that is part of a cylindrical body that opens on one side;
The monitoring element (12)
A metal tube disposed in the counter element and formed with a continuous slot;
A plurality of elastically tensionable leaf springs, one end of which engages with the continuous slot of the metal tube,
A portion of the remaining portions of the plurality of leaf springs is spaced from the inner surface of the counter element when deflected by the tensioned fiber sliver and when not deflected by the fiber sliver A monitoring device that engages an inner surface to detect loss of tension of the fiber sliver. The monitoring device according to claim 1 , wherein the tensioning fiber sliver is arranged to lift the monitoring element relative to a non-moving counter element. The monitoring device according to claim 2 , wherein the monitoring element and the counter element form a switch device. The monitoring device according to claim 3 , wherein the switch device can generate an electrical pulse when the monitoring element moves. The monitoring device according to claim 1, wherein the monitoring element is curved in a convex shape. The monitoring device according to any one of claims 1 to 5 , wherein a contact area of the monitoring element with respect to the sliver is smooth. The monitoring device according to any one of claims 1 to 6 , wherein the tensioned fiber sliver elastically biases the monitoring element. The monitoring device according to any one of claims 1 to 7 , wherein the monitoring element is arranged to be biased by inherent elasticity. The monitoring device according to any one of claims 1 to 8 , wherein the monitoring element and the counter element cooperate as a contact type switch. The monitoring device according to any one of claims 1 to 8 , wherein the monitoring element and the counter element cooperate as a non-contact switch. The monitoring device according to claim 10 , wherein the non-contact switch is a measuring device. The monitoring device according to claim 11 , wherein the measurement device includes a proximity initiator. The monitoring device according to claim 11 , wherein the measuring device includes an inductive proximity switch. The movement monitoring device as claimed in any one of the fiber sliver of claims 1, which is arranged to be activated by the loss of tension 13. 15. The monitoring device according to any one of claims 1 to 14 , wherein the loss of tension is caused by a stop of at least one fiber sliver. 15. A monitoring device according to any one of the preceding claims, wherein the loss of tension occurs through tearing or breaking of at least one fiber sliver. The monitoring device according to claim 3 , wherein the switch device is connected to a stop device that stops the textile machine. The monitoring device according to claim 2 , wherein the monitoring element and the counter element are connected to a voltage source. The monitoring device according to claim 18 , wherein the counter element at least partially comprises a metal. The monitoring device according to claim 1, wherein a plurality of monitoring elements are attached to the holding element. 21. A monitoring device according to any one of the preceding claims, wherein a monitoring element is present for each of the fiber slivers. The monitoring device according to any one of claims 1 to 21 , wherein the monitoring element is arranged between the supply device and the stretching system. The monitoring device according to any one of claims 1 to 22 , wherein the monitoring element and the counter element are electrically insulated from each other. The monitoring device according to any one of claims 1 to 23 , wherein the fiber sliver is deflected downward by gravity when tension is lost. Polarization direction element monitoring device according to claim 1, which is spring-loaded in any one of 24.

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