JPS6028932B2 - Roving stop device of spinning machine draft device - Google Patents

Description

[Detailed description of the invention] In a spinning machine draft device, when yarn breaks, the top roller is removed from the bottom roller and the roving is removed between itself and the top roller at the cotton binding section between the inlet bottom roller and the inlet top roller. West German Patent No. 321 has a roving stopping device with a stopping member that holds the roving firmly in place and stops the advance of the roving.
No. 96, German Patent Application No. 2048579.

When stopped, the roving in front of the retained part is pulled forward by the other pair of rollers of the active drafting device, and in the stopped part of the roving there is a pair of inlet rollers and a following in the direction of roving progress. <
A fiber tuft is formed in the front region of the drafting device between the tightening part and the fiber tuft, which becomes the starting end of the hammer thread that moves forward after the stop is released.
The length and cross-sectional area of this fiber tuft can vary greatly;
It is necessary to change the starting conditions for the next spin accordingly. The difference in fiber tufts is also most important when the roving material is different, that is, whether the roving is cotton or wool. In the case of cotton, the length of the front zone is generally about 1.5 to 2 times the average stable length, and the clamping section following the inlet roller pair is usually a double apron device hung over a group of solid rollers, and the stop The fiber tufts of roving threads eventually stand up in the area of the front castle.

The fiber tufts contain loose fibers, i.e. fibers whose ends at the time of stopping are neither in the stopping device nor in the clamping area formed by the next pair of rollers, and the distance to the next clamping point is not constant. . In other words, some of the free fibers are located in the direction of the tacking section during the stop and are pulled out of the tuft by the fibers that have entered this tacking section. Since the fibers of wool braided yarns are longer than the length of the front region, the tightening section following the inlet roller pair, for example a double apron device, has at least one grooved roller, so that one end enters the double apron device, but the Ikebata The fibers that are still between the pair of inlet rollers are pulled taut, but are not torn apart.

During the stopping of the roving between the inlet top roller and the stop element, the fiber tufts produced in the front region reach the next clamping point, into the double apron arrangement. The relatively long fiber tufts thus have a small cross-section in this region. That is, after the stoppage of the roving is canceled in order to resume spinning, it takes a relatively long time until the fiber bond emerging from the pair of exit rollers of the drafting device becomes a yarn with a complete cross-sectional area again. In addition, regardless of the type of roving, there is a risk that isolated tufts in the front region of all or part of the stopped roving will not go to the next tightening section even if the stopping is released.

This is because it pushes the isolated roving from behind. It is known from the above-mentioned German Patent No. 321,196 to arrange a guide plate in the front castle to prevent the fiber tufts from falling and to pass to the next tightening station. However, this is not certain. it is,
This is because the roving begins to move, and the isolated fibers pushed and moved by this may roll against the guide plate as if rolling against it, removing the roving from the guide plate and diverting it from the trajectory. Passing the beginning of the roving to the next clamp is also prevented by the moving blower. This device, which runs along the machine, blows a powerful cleaning air stream onto the drafting device, so that this air stream pushes the fiber tufts sideways and prevents them from falling over the guide ramp, even if the guide plate has a boundary wall. There is. In this way, the rovings that do not go to the next tightening section collide with the rotating member of the drafting device, where they are gripped and wound or tangled.

In addition, using a guide plate to support the starting end of the roving, even if the length of the guide plate is optimal for a certain type of fiber,
It is too long for other types of fibers, making it difficult to shorten the front length of the drafting device, and also having a large It is necessary to prepare information boards. The present invention solves the above-mentioned problems, and in the event of yarn breakage, the starting end of the roving, which is firmly held between the inlet top roller and the stop member, is blown by a cleaning air stream into the drafting device. The purpose of this invention is to ensure that the rollers go to the attaching section of the drafting device following the pair of inlet rollers after the stop is released, and this problem is solved by the structure of claim 11.

The roving holder protects the front and rear isolated fiber tufts or their raised sections from the effects of the moving blower and holds the roving firmly in place until it resumes its movement.

The holder is adjustable, so it can be optimally matched to the tuft formed depending on the type of fiber.For example, in the case of cotton, fibers that have entered the tightening section cannot be compensated for, but loose fibers can be stopped by the top roller. A holder can be arranged in the area of the fore region to hold it securely within the roving section between the members. This results in a fiber tuft that reaches very close to the clamping point and ensures that it reaches the clamping point when the operation is resumed. If the roving is wool, a holder should be provided between the inlet top roller and the stop village in a position that can securely hold most of the loose fibers in the phase yarn. The reduction in area begins only at the holder, and when operation is restarted, a fiber bond suitable for spinning into a complete yarn of sufficient cross-sectional area quickly emerges from the outlet of the drafting device.

The roving holder can be made much shorter in the direction of the roving than a guide plate that only supports the roving from below. Therefore, the holder can be adjusted as needed within the range, whether the front castle is long or short. Preferred embodiments of the invention are set forth in the claims (21 et seq.).

By means of step (2), an assembled part is obtained which includes the main parts of the roving stop and hold device and which can also be installed in conventional machines.

It is particularly advantageous if this assembly is made according to claim {3'. This allows for the initial installation of parts of the roving stop and hold device on the machine, as well as for any necessary preliminary work for cleaning, maintenance and refurbishment on the drafting device with the roving stop and hold device. This makes it easy to restart the operation of the draft device. The support rail is pivotably mounted on a support member fixed to the machine, so that the support rail, together with the parts of the roving stopper and holding device, can be pivoted in the same way as the top arm that holds the drafting device top roller, so that the drafting area can be moved. It can be moved from the beginning and then turned in the opposite direction to return to operating condition.

The stop village fixed on the support rail is made as a key that can be moved along the support rail, so that the support rail has the function of stopping and holding the thread against the parts fixed above it. This integrity makes it easy to initially install it into the machine. According to the claims, it is possible to precisely and reliably set the support rail in an operating state and a non-operating state.

Also, by designing the stop member as in the IQ, the connection between the stop member and the slide that moves it can be easily made even if their relative positions are different, and the stop member can be aligned with the inlet roller. (1Q' This simplifies the handling of the roving stopping device and holding device.

Generally, the top arm for the top roller can also be pivoted, so when the top arm is pivoted, the two support rails for the double top roller also move together. The present invention will be described below with reference to illustrated embodiments. 1, 2, and 9, a support 2 is fixed on a support shaft 1 fixed to a bushing machine, and a top arm 4 is mounted in the support 2 so as to pivot around a bearing 3. Hold.

In the first, second and ninth figures, the arm 4 is in operation. In addition, bottom rollers 5, 6 and 7 are mounted on the machine frame, although not shown in detail since they are well known, and the distances between them and from the support shaft 1 can be adjusted to various desired lengths. The bottom rollers 5, 6, 7 are provided with double top rollers 5', 6', 7' whose movement can be adjusted along the top arm 4 and which are driven by the bottom roller. A bottom apron 9 runs over the bottom roller 6 and a tension bar 8 in front of it, and is provided with a top apron 10 that runs over the top roller 6' and a cage (not shown). By this draft device, the roving 11 is drawn by the arrow A
The thread runs in the direction shown in FIG. The lees 11 shown in the figure is moved to a stopped state.

The stop device 12 in FIGS. 1 and 2 is a bottom roller 5, as is known in the art.
Stop claw 1 that extends over half the circumference of the
3 and the edge 14 which bites under the top roller 5' is a leading edge.

The length of the stop claw 13 in the gill direction is longer than the top roller 5'.
When the stop claw 13 is rotated from the standby position to the stop position shown in FIG. 1 in response to a signal issued by the monitoring device when the thread breaks, the edge 1
4 is inserted between the roving 11 and the bottom roller 5, and then bit into the webbing section between the pair of entrance rollers 5, 5'. In this state, the stop pawl 13 is prevented from rotating any further, and the roving 11 removed from the bottom roller 5 is attached to the edge 1 of the stop pawl 13.
4 and above the roving 11 and twill 14 is a top roller 5' which is also detached from the bottom roller 5, so that the roving 11 is held firmly and prevented from advancing. As a result, the stretched fiber bonds do not come out from the exit roller pair 7, 7', and even after the thread breaks, the fiber bonds are prevented from running out and being wasted or being bent. In the apparatus shown in FIGS. 1 to 8, switching of the stop claw 13 for stopping or releasing the roving 11 is performed as follows.

At both ends of the stop pawl 13, preferably made of plastic, in the direction of the box, there is a radially outward projection 15 with a notch 16 into which a projection 17 formed on the slide 18 engages.

A slide 18 having a rectangular cross section is inserted from below into a support rail 19 having a U-shaped cross section so as to be movable in the longitudinal direction, and this support rail 19 is held on a support member 20 so as to be able to adjust its position in the longitudinal direction and fix it. has been done. Support part 2 has a fixed clamp 21 that straddles the support end 1, and this clamp straddles the shaft 1 and tightens the shaft with a set screw 22, thereby fixing it on the support shaft 1 at an arbitrary position. be able to. The support element 20 also has an extension piece 23 for fixing the support rail 19, which has a hole through which the support rail passes and, perpendicular to this hole, a further hole for receiving a screw 24, its nut and a toothed washer. There is a hole. In particular, as is clear from the upper right section of FIG. 2 and FIG. 3, the screw 24 is fixed by sandwiching the support rail with a nut and washer. FIG. 2 shows the support villages on both sides of one top roller, and FIG. 3 shows the support villages on each side between two adjacent top arms. In this way, the support member 20 holds the support rail 19 parallel to the traveling direction of the roving and fixes it on the support shaft 1. On the support rail 19, as can be seen in FIG. 1, a case 25 containing an electromagnet 26 is fixed, and its excitation punch 28, which is pushed by a spring 27, has a lock 29 extending at its free end.

This lock 29 engages with a stopper 30 recessed in the rear end of the slide 18 that has protruded into the case 25. A compression spring 31 acts on this rear end of the slide 18, and the short-term excitation of the electromagnet 26 causes the excitation punch 28 to resist the force of the spring 27.
is pulled up and the gap is released from the stop 30, the spring forces the slide 18 to the left in FIG. The electromagnet 26 is laid in the support rail 19 and is connected by a wire 32 with a plug 32' extending from its rear end facing into the machine interior to a device activated by a monitoring device. It should be noted that the signal for energizing the electromagnet 26 can also be provided by a device that does not directly monitor the yarn, for example a monitoring station that records the stoppage of the rotor in the event of a yarn break. When thread breakage is confirmed by this, the lock 29 is released, the compression 1 imitation 31 moves the slide 18 to the left in FIG. and a joint with a notch 16 to rotate it in the direction of the rebound indicator.

The rotation of the slide 18 and the stop claw 13 is done by the green 3 of the slide 18.
3 is thickened when it is applied to the stopper green 34 formed on the support rail 19. With the slide 18 in this state, the stop claw 13
As described above, the roving 11 is firmly tightened between itself and the top roller 5' which has been removed from the bottom roller 5 to stop the advance of the roving (see FIG. 2). The edge 33 is a knob 3 provided upwardly on the slide 18 and protruding from the support rail 19.
5, and by holding this knob, the slide 18 can be returned to the original standby position shown in FIG. 1 against the compression spring 31.

In this case, the lug 29 protruding into the approach path at the rear end of the slide is pushed up by the slope 36 formed at the rear end of the slide 18, and when the recessed stopper 30 comes directly below, it falls into it. The roving holder 37 has an inlet roller pair 5, 5',
The vertically attached part of the drafting device that continues in the traveling direction of the roving (in the example shown, the pair of rollers 6, 6' and the aprons 9, 1 that run on them)
It is located in the area between the river (formed by the river).

The lees holder 37 is arranged in this area, ie in the front area of the drafting device, so that it can be adjusted along the roving. Therefore, the roving holder 37 can be movably placed on the support rail 19 and fixed at any desired location within the front area by tightening the set screw 38. In particular, as can be seen in FIG.
has a support rail 19 and a holder body 39 having a horizontal hole through which the part of the slide 18 protruding from the support rail lower surface passes, and by tightening the screw 38 passed through the holder body 39 perpendicularly to this, the nut can be tightened. The holder assembly 39 can be fixed on the support rail by sandwiching the support rail 19 with toothed washers.

The holder body 39 has a table 40 that projects laterally and contacts the roving 11 from below.

Further, there is a rotating pin 42 whose one end is rotatably supported integrally with the holder, extends on the table 40 in parallel to the table surface 41, and can contact the roving 11 from above. The portion of this pin 42 protruding from the holder body has a semicircular cross section, and the fourth pin 42 has a semicircular cross section.
, 5, the pin 42 has a semicircular flat surface 43.
When facing the upper surface 41 of the table 40, a gap 44 is formed between the two surfaces, and the roving can move within the gap 44 without any hindrance. A gear 45 is attached to the part of the pin 42 that protrudes into the holder.
is attached and is engaged with the rack 46 of the slide 18. When the slide 18 is in the retreat position and the roving stop device 12 is in the standby position as shown in FIG. , the holder 37 is fixed on the support rail 19 so that a gap 44 is created therebetween.

The thread breaks, the bolt comes off, and the slide 18 moves forward to the left.
As described above, when the stop claw 13 is brought to the position where the roving 11 is stopped, the rack 46 of the slide simultaneously rotates the gear 45 about half a turn.

As a result, the pin 42 has a semicircular surface on the upper surface 41 of the table 40.
The silk thread 11 is firmly held by narrowing the gap. The lower side of FIG. 2 shows the state in which the cotton roving 11 is held.

When the device 12 stops the roving, the fiber tufts 11' of the roving produced in the front region are held in a holder 37 arranged there, so that they are not pushed aside by the air flow of the cleaning blower. In addition, the fiber tuft 11' extends very close to the next clamping point formed by the double apron device 9,10. This is because the holder 37 increases the proportion of free fibers remaining in the fiber tuft 11'. Therefore, when the knob 35 is operated to cancel the stoppage of the roving yarn in order to resume operation, and at the same time the holder 37 is made to release the fiber tufts 11', the roving yarns 11 that begin to move, along with the tufts 11', are all connected to the double apron device 9, 1 river. Here I go. The upper side of FIG. 2 shows a state in which the wool roving 11a is stopped.

Depending on the length of the fibers, the spacing between the bottom rollers 5 and 6 is wide, and the spacing to the exit bottom roller 7 is also wide, as is the case with the top loaves 5', 6', 7'. In addition, the spacing with respect to the support shaft 1 is also different from that in the case of cotton. The roving stop 12 and the holder 37 can also be easily adjusted accordingly.

The screw 22 is loosened, and the support member 20, together with the support rail 19 fixed thereto and the parts fixed on the rail, is pivoted around the support shaft 1 and raised to a position that does not interfere with the adjustment of the rollers. At this time, the protrusion 17 that had entered the notch 16 of the stop claw 13 comes out of the notch. Screw 22 if necessary
The device can also be completely removed from the machine by pulling out the . When the support member 20 is re-fixed and the screw 22 is loosened, the support rail 19 can be moved together with the slide 18 and the protrusion 17 to match the bottom roller 5 and the stop claw 13 whose positions have been changed, and the screw 24 can be tightened and fixed again. Similarly, the screw 38 can be loosened, the holder 37 can be moved along the support rail 19, aligned with the fiber tufts formed differently depending on the type of roving, and the screw 38 can be tightened again to fix the device 12.
and 37 are functionally arranged opposite to each other as shown in FIG. 1, but they can be fixed at arbitrary positions. When the wool roving 11a is stopped, the fiber tuft 11a' becomes the second
As shown in the upper part of the figure, it consists of a long top apron 10a and a long bottom apron 9a, and a grooved top roller 6'a.
Reaching into the double apron device containing.

The roving holder 37 arranged in the forecastle also securely holds loose fibers in the roving section extending from the stopping device 12 during stopping. Without the roving holder 37, these free fibers would be pulled out of the stopped roving by the continuously rotating double apron device, and the cross-sectional area of the fiber tuft in front of the stopping point 14, 5' would be reduced. However, because of the presence of the holder 37, the reduction in the cross-sectional area of the roving and the formation of fiber tufts begin from the roving holder 37, so that when the operation is resumed, the fibers can be bonded again from the exit roller pair 7, 7' and have a sufficient cross-section. It becomes a complete thread with . In addition, the holder 37 has a longer front section in the case of wool, which in this case prevents the fiber mist from being disturbed by large cleaning blowers. In the roving holder 37 described so far, the roving is held between the half circumferential surface of the pin 42 and the surface 41 of the table 40.

This was because the close spacing of both parts made each other awkward.

The strength with which the roving is held by the holder 37 is easily adjusted to the type and thickness of the roving, the draft, and the spinning conditions, and is selected so that there are no or more or less free fibers retained in the fiber tufts. be able to.

Since the holder 137 shown in FIG. 6 has a groove 47 formed on the surface of the table 40 of the pin 42, the holding is weaker than that shown in FIG. 4. When the pin 42 rotates half a turn when the roving is stopped, a gap is created between the half circumferential surface of the pin 42 and the table 40 due to the groove 47.
In this gap the rovings or fiber tufts are retained, or the free fibers are not so tightly retained that they are pulled along with the fibers that have already entered the next tying. The proportion of free fibers remaining in the resulting fiber tufts is therefore reduced accordingly. Holder 237 shown in Figure T, 8
In the same case, the table 40 has a flat upper surface 41, but the pin 142, preferably made of plastic, has a slit 48 in the semicircular part, which makes the semicircular part elastic and can be held. This is because the pin 142 allows loose fibers to be pulled out due to its elasticity.

Such elastic retention of the lees yarn can also be achieved by providing elasticity to the entire pin.

The above-mentioned roving stopping device with a holder can also be installed in drafting devices already in use.

It moves the stop pawl 13 and connects it with the holder 37 (electromagnet 26, slide 18) and the holder 37.
This is because the support rail combines the two parts into one assembly. This device can be seen in particular in FIG.
0' Since the support rail 19 is attached and the holder 37 is placed on the support rail 19, the same stop claw 13 can be used to install it on one side or the other side of the top arm equipped with double top rollers. be able to. That is stop claw 1
3 has protrusions 15 at both ends of the shaft in all directions, and when installed on a monopod, one protrusion 15 can be connected to the protrusion 17 of the slide 18, and when installed on the other side, the other protrusion 15 can be connected to the protrusion 17 of the slide 18. . Since the tips of the table 40 and the pins 42, 142 are free, the roving can be easily inserted into the holder from between the ends of the roving, or the holder can be set across the roving.
The holder may, of course, have a different stop device than shown, for example, instead of a stop pawl mounted on the bottom roller, a key-like stop element is pressed into the clamping part between the entry loaves in the event of thread breakage, or It can also be used with a stopping device that can be accessed by turning. In the embodiments shown in FIGS. 9 to 13, the support body 2 is fixed on the support shaft 1 fixed to the machine,
A top arm 4 that can pivot around a bearing 3 is held on this.

The top arm 4 is attached to the driven bottom rollers 5, 6, and 7.
The top loafs 5', 6', and 7' held in the cage face each other, and the bottom apron 9 runs over the bottom roller 6 and the tensor bar 8 in front of it.
A top apron 10 running between the two (not shown) faces each other.
The parts of the device for stopping and holding the roving 11 passing through the drafting device in the direction of arrow A are arranged on the support rail 119. The support rail 119 is different from the above-mentioned one in that it is pivotably attached to the support section 12 fixed on the support rail 1. For this purpose, the support rail 119 is fixed to the lower part 50 (FIG. 10) of the case 51 at the end on the support shaft side, and the hood-shaped cover 52 of the case is connected to the electromagnet 129 fixed to the lower part.
The bolt 129 of the electromagnetic exciter punch 128 cooperates with the stopper of the slide 118 guided in the support rail 119.

On one side of the case 51, a connecting plate 53 has protruding pieces 54 and 55 inserted into the lower part 50 of the case and into the recesses in the cover 52.

A connecting plate 53 and a lower five-way nut 56 are fixed on a step 57 of a bearing bolt 58, and the bearing bolt 58 is engaged with a spring box 59 fixed on the support shaft 1 and is held rotatably. The spring box 59 is attached to the cotton strap 6 as shown in FIG.
0 and is fixed on the support shaft 1 with fixing bolts 61. Inside the spring box 59 is a coil spring 62 through which the bearing bolt 58 loosely passes, one end 52a of this spring is supported by the green part of the spring box 59, and the spring end 62b is an extension of the connecting plate 53 that protrudes into the spring box 59. 63, the case 51 with the connecting plate 53 and the support rail 119 fixed thereto is intended to be pivoted about the bearing bolt 58 in a counterclockwise direction in FIG. This pivoting is limited by a stop when the support rail 119 and the parts of the device for stopping and holding the roving arranged thereon are put into operation. This stop can be formed, for example, at the end of a slit-like hole in the spring box 59 through which the extension 63 passes. However, when doing so, the spring box 59 is
It must be fixed precisely around the For this purpose, as is clear in FIG. 9, the stop may be formed by a fixed surface of the machine and an adjustable abutment surface arranged on the support rail 119. As a fixed surface of the machine, the surface of the tensile bar 8 and the tread surface 64 are held by a sliding adjustment piece 66 that can be moved in the longitudinal direction on a support rail 119, and an adjustment screw is brought into contact with the surface of the tensile bar by a spring 62. It is the tsuba.

This screw 65 is threaded into an internal thread in the sliding adjustment piece, for example by a nut 67 held non-rotatably in the sliding adjustment piece;
A nut 68 secures the abutment surface 64 in a predetermined adjusted position.
As a result, the support surface 64 comes into contact with the surface of the tensile bar 8 and provides the support rail 119 with a predetermined operating condition. When the locking nut 68 is tightened, the sliding adjustment piece 66, preferably made of plastic, guided along the support rail 119 is also fixed to the support rail 119 at the same time. As shown in the figure, the adjusting screw 65 has a shaft portion 6 that protrudes beyond the support surface 64.
9, and by providing a hole in the fixing surface, for example, the tensor bar 8, so that the shaft part can penetrate therein, the height of the support rail 119 can be adjusted with respect to the extension area surface, and the rail can be fixed in the lateral direction. You can also. Since the rail 119 extends for a long time from the fixed point in the case 51, the support rail 1'9 is supported very stably. Adjustment screw 65
may be placed in the sliding adjustment piece next to the support rail 119 passing through it, or a slit may be provided in the support rail in the longitudinal direction and the adjustment piece and the support rail 119 passing through it may be disposed in the slide adjustment piece. It may also be passed through the slit in the holder. Support rail 1
19 can be manually pivoted around the bearing bolt 58, preferably against the coil spring 62, so that it can be moved away from the bottom roller for cleaning, maintenance and refurbishment of the drafting device.

A stop acting on the extension 63 is provided in the spring box 59 so that the support rail 119 can be moved out of service against the force of the coil spring 62 and easily fixed. Therefore, the extension part 6
3 has a stop notch 70 on its outer surface, and a stop cam 71 is disposed on this outer surface. The two protruding shafts 72 protruding from both ends of the stop cam 71' are inserted into vertical slits in both side walls of the spring box 59. The two protruding shafts 72 may be the ends of pins inserted into the stop cam 71.

In addition, the stop cam 71 projects into the hole in the spring box 59 at the upper end of the shaft 73. On the outer periphery of this wisteria 73 there is a buffer spring 74, which is supported on the one hand by the spring box 59 and on the other hand by the stop cam 71, when the extension 72 is in the final position shown. is separated from the extension part 63,
The action of the coil spring 62 on the support rail 119 is not affected. The stop cam 71 comes into contact with the extension 63 for the first time when the support lever 119 is pivoted upward into the non-operational state. The stop cam 71 then climbs up the outer surface of the extension against the force of the spring 74 and falls into the stop/titch 70. The support rail 119 thus reaches the non-operational state indicated by the dash-dotted line 75 in FIG. Support rail 119
In some cases, this turning is only possible when the top roller holding the top arm 4 is turned in advance to the non-operating state determined by the stopper (dotted chain line 79 in Fig. 9). be. In other words, it is possible that a top loaf exists in the turning area of a part described below placed on the support rail 119, and in this case, it is necessary to first turn the support rail and then the top arm to return to the operating state. If this order of operation is not followed, the parts will come into contact with each other, and if you try to force them to move while they are still in contact, you will be damaged. To ensure that this does not occur, the top arm should be provided with a laterally projecting flat bracket or the like which covers the support rail and prevents it from pivoting upwards while the top arm is in operation. good. When placed in this manner, when returning the top arm and support rail from a non-operating state to an operating state, the support rail can also be returned to the operating state using a flat metal fitting when returning the top arm. Normally, when cleaning, maintenance, renovation, etc., the top arm and the support rails on both sides are turned to a non-operating state, and then returned to an operational state when the work is completed, so these are linked together to make the operation easier. It is preferable to include a device for turning.

The device consists of a connecting hanger 76 (see FIG. 13) mounted over the top arm 4 and attached to the arm 4 by a pigtail or screws 77 as shown. At the free end of the arm 78 bent laterally from the hanger 76 is a grooved, clawed gripping device 79 which retains the support rail 119 therein. The support rail can play within the gripping device by the length of the slit in which the protruding shaft 72 is inserted. Therefore, when the top arm 4 is pivoted, the top arm pivots by the length of the slit and thereafter pivots together with the support rail.
Therefore, the play that exists in the turning direction and the side is to prevent the top arm 4 and the connecting hanger 76 from applying forces that affect the operating state of the support rail 119 to the support rail, and to prevent the connecting hanger 76 from being applied while turning. This is to allow displacement of the support rail 119 at . This is because the coupling hanger 76 moves concentrically with the top arm 4 around the bearing 3 of the top arm 4 remote from the pivot point (bearing bolt 58) of the support rail 119. FIG. 9 shows a part of the connection hanger 76 fixed to the top arm 4. At the front of the draft device on the support rail 119, a holder integral 39 of the holder 37 of the mating thread is attached with a screw 3 so as to be adjustable in the longitudinal direction.
Fix it at 8.

From the holder body 39, a table 40 that contacts the bottom of the lees 11 projects laterally, and a pin 42, one end of which is rotatably attached to the holder body 39, projects above the table. The protrusion of the pin 42 has a semicircular cross-section as before, and the roving 11 can move through the gap 44 between its flat surface 43 and the tabel 40. A pin 42 secures a gear 46 at one end in the support rail and meshes with a rack 146 of a slide 118 guided within the support rail 119. As a result, the pin 42 rotates by half a rotation due to the movement of the slide 118 based on the operation of the roving stopping device 112, which will be described later. Hold firmly around the circumference. Additionally, a roving stop device 112 is arranged on the support rail 119.

When stopping the lees yarn 11, the stopping member that enters the tying section formed by the pair of inlet rollers 5, 5' removes the top roller 5' from the bottom roller 5 and moves the roving 11 between itself and the top roller 5'. This is a stop key 80 fixed movably in the longitudinal direction on the support rail 119.

At the end of the stop key 80 there is a fork-shaped guide member 81 which is connected to a support rail 119 with a U-shaped cross section.
is accepted between both legs 82. Both legs 82 of the guide member 81 support the housing 8 of the stop key fixed on the lever 119.
3 and is movably guided therein. The housing 83 consists of the open side of the support rail 119, a lower part 84 including both legs of the guide member, and a cap 85 that covers the support rail 119 from above, and both parts 84 and 85 are secured with screws 86. To limit the movement of the guide member 81 within the housing 83, the lower portion 84 has a hole 87 into which a projection 88 formed on the outer surface of the leg 82 of the guide village engages. The shape of the hole 87, which corresponds to the size and shape of the protrusion 88, allows the guide member 81 to move within a certain range within the lower part 84. 12th
As can be seen in the figure, since the protrusion 88 has a chain tooth shape, the guide member 81 is pushed into the lower part 84 from below using the elasticity of the legs 82 before placing the various parts on the support rail 119. A compression spring 89 is contained in the housing 83, which spring, supported in the cap 85, acts on the leg 82 of the guide member 81 and presses the projection 88 against one edge of the hole 87. In the operating state (FIG. 9), the above-mentioned limited movement of the guide member 81 and the stop key 80 relative to the stop key housing 83 is perpendicular to the plane of extension. The lower portion 84 of the housing 83 has teeth 90 that match the teeth 146 of the slide 118.
The housing 83 is connected to the slide 118 and moves together with the slide 118, and is movable together with the guide member 81 and the stop key 80 on the support rail 119 in the engaged fixed state.

When the screw 86 is loosened, the tooth 90 can be engaged with any part of the tooth 146 of the slide 118, and the position of the partner yarn stop device 112 can be aligned with the draft device. As can be seen in FIG. 9, the connection by meshing the teeth 90 and 146 is such that the stop key 80 is connected to the roving 11 in the operating state and in the standby state of the stop device.
is outside the area of movement, such that the key edge facing the inlet roller pair 5, 5' is away from these rollers and below the extending surface of the bottom roller 5.

This final position is achieved by adjusting the adjustment screw 65.
When the thread monitoring device issues a thread break signal to the electromagnet 126, the electromagnet releases the bar 129 and causes the spring to move the slide 118 as in the previous embodiment. As a result, the housing 83 moves together with the stop key 80 in the direction of the pair of inlet rollers 5, 5', and the stop key 8 first comes into contact with this roller with its edge facing the bottom roller 5 and rides on it. The guide element 81 then moves within the housing 83 against the compression spring 89. When the protrusion 88 is allowed to play slightly laterally in the hole 87 as shown, the stop key 80 and the guide member 81 can tilt and slide. When the stop key 8 slides, it comes into contact with the roving 11, and when it moves further, the bottom roller 5
Remove the top roller 5' from the bottom roller 5 while being supported by it.

The lees yarn 11 is then jammed between the stop key 80 and the stationary top roller 5', and is stopped from moving forward. At the same time as this stop, the slide 11
8 rotates the pin 42 of the roving holder 37 by half a turn to firmly hold the fiber tuft. This is the top of the entrance.

The force lifting the roller 5' does not act as a bending force on the support rail 119, but is applied to the inlet bottom roller 5 only with the support of the stop key 80. The stop key 80 rides on the rotating bottom roller 5 in the rotational direction, so it is easy to ride on it. In the stopped state, the stop key 80 is finally pulled by the bottom roller. This is because the top roller presses the top roller onto the bottom roller. This biting of the stop key 80 causes the top roller to be removed.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the drafting device according to the first embodiment of the present invention in an operating state, and FIG. 2 is a plan view of the same, in which the lower drafting device is drafting cotton roving. , the upper drafting device shows the state in which the roving is stopped during the drafting of the wool roving, Fig. 3 is a front view taken along line m-m in Fig. 1, and Fig. 4 is a view of the roving holder. A partially missing front view, Figure 5 is a side view of the holder seen from line V-V in Figure 4, Figure 6 is a front view of the deformed roving holder, and Figure 7 is another side view of the roving holder. Front view of the two variants, Figure 8 is the 7th variant.
FIG. 9 is a side view of a draft device with a part of another embodiment in cross section, and FIG. 10 is a cross-sectional view taken along line X-X in FIG. 9. , FIG. 11 is a side view of the stop part in FIG. 9, FIG. 12 is a cross-sectional view taken along the single dish line on the side of FIG. 11, and FIG. 13 is a front view of the connecting hanger and top arm. 5, 5' are a pair of inlet rollers 6, 6' are a pair of rollers constituting the cotton attachment part, 11, 11a are rovings, 12, 112
Stop device, 13,8 River stop member, 37,137,2
37 indicates a holder for the roving. Fig. 3Fig. l Fig. 13 N 〇Fig・MuFi9.5 Fig. 6 Fig. 8 Fig. 10 Fi9.11 F;9.9 Fig. '2

Claims (1)

[Claims] 1. It has a stop member that is moved by the clamping part between the inlet bottom roller and the inlet top roller in the event of yarn breakage, and this stop member detaches the inlet top roller from the inlet bottom roller and removes the roving by itself. In the roving stopping device of a spinning machine draft device, which is held between the inlet bottom roller and the inlet top roller to stop the roving from moving forward, the stopping members 18 and 80 are held between the inlet bottom roller and the inlet top roller when the yarn breaks. a roving holder 37 connected to a device for moving the tightening part and movable together with a stop member to a position where the rovings 11, 11a are stopped and a position where they are released;
137, 237, and this roving holder is placed in the area between the pair of inlet bottom roller 5, inlet top roller 5' and the clamping parts 6, 6' of the drafting device following the roving direction. A roving stop device for a spinning machine draft device, characterized in that the device is adjustable along the roving device. 2 Set the roving holders 37, 137, 237 to the roving 11, 1
a support rail 19 attached to the draft device parallel to 1a;
119 so that it can be fixed on the support rail 19,
Inside 119 a slide 18, 118 is guided, which includes a spring 31 that pushes the slide in one direction and a spring 3
A bolt 29, 129 that keeps the slide in the position where force is stored in 1 and releases the slide by means of a thread breakage indicator.
are provided, stopping members 13, 80 and roving holders 37, 13
7,237 both connected to a slide. 3 Support rail 119 supports top rollers 5', 6', 7'
A stop member made as a stop key 80 is mounted on the support rail so that it can be pivoted from the operating state in the same direction as the top arm 4 holding the machine, and a stop member made as a stop key 80 is mounted on the support rail in the longitudinal direction of the support rail. 3. A device according to claim 2, wherein the device is adapted to be movable. 4. The support rail 119 is held by the spring 62 in the operating position determined by the stopper, and the stopper 70,
Device according to claim 3, which can be pivoted into a non-operating position 75 determined by 71. 5 Support rail 119 is top roller 5', 6', 7'
5. A device according to any one of claims 2 to 4, which is connected so as to be pivotable in conjunction with a top arm 4 holding a top arm. 6 The roving holders 37, 137, 237 hold the roving 11, 1
It has a holding member that contacts 1a from below and a holding member that contacts 1a from above, and at least one of the holding members is movable relative to the other holding member, and both of the holding members protrude parallel to the roller axis. A device according to any one of claims 1 to 5, which is arranged in a holder body 39.