JPS6262924A - Rough yarn stop apparatus of spinning frame draft apparatus - 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 The present invention relates to a roving stopping device for a spinning machine traft device that stops the roving when the thread breaks.

Such a braiding thread stopping device is disclosed in West German Published Patent No. 31457.
No. 98 (corresponding Japanese patents: Japanese Patent Publication No. 60-23932, Japanese Unexamined Patent Application Publication No. 57-133224). The second embodiment shown in FF59 to 12 is well known. This is done by loosening the bolt connecting both parts of the slide to disengage the opposing teeth formed at the bottom of the rack and slide, and then moving the slide along with the stop key on the support rail. I can't come. Such a movement may be necessary, for example, if the material to be processed changes and the pair of inlet top and bottom rollers of the drafting device is moved to another location in the drafting area in order to adapt the machine to the material being processed. In that case, the stop key of the roving stop device must also be adapted to this new situation, for which purpose the meshing of the opposing teeth of the rack and the lower part of the slide is made at a different location.

This requires a lot of effort in loosening and tightening the bolts that connect the two parts of the slide to each other during the many adjustment changes that must be made. This problem of reducing operating costs is solved by the structure of claim (1). This is because, by overcoming the spring force holding the top and bottom of the slide, the teeth that engage with the rack can be quickly and easily removed from the rack, after which the slide to other parts of the rack area and the stop key can be removed. This is because adjustments can be made. To overcome the spring force, you can use your hands directly or use a tool that engages a groove or protrusion at the bottom of the slide, so that when it is released or released, the spring re-racks the teeth at another location. interlock.

The design according to the invention also simplifies the assembly work when initially equipping a machine with a roving stop.

The upper and lower parts of the slide can be fixed to each other, for example by compression springs. Particularly advantageous, however, is the method of fixing the two parts of the slide to each other according to claim (2). This is because the known slide configuration can be maintained as is.

The embodiment mentioned in claim (3) offers particular advantages with regard to the mounting of the slide on the support rail. The lower cover plate which covers the surface of the support rail already creates a fit on the support rail when this slide part is placed over the support rail, but in the case of known slides there is no screw between the upper and lower parts. Only after making a joint will a fit occur. By means of a joint between the two parts of the slide which rests on the support rail in the center and by a sliding part formed in the negative part of the slide, the sliding of the slide tooth into the rack is possible by applying pressure on the head of the pin. JJ has a sushi bowl that places less load on the support rails during engagement, and also eliminates the tilt of the slide during adjustment on the support rails! Particularly favorable conditions for movement arise.

These designs also make it possible in a particularly advantageous manner to implement the method for adjusting the slide on the support rail as claimed in claim (4). By applying pressure on the pin head with the adjustment tool, the connection between the slide and the rack is first broken and the slide can then be moved to the desired adjustment location without movement. ': When A is released, the compression spring reconnects the slide and rack.

The device for carrying out the adjustment method as claimed in claim (5) is particularly advantageous in that it facilitates a large number of successive readjustments of the slides when changing the equipment of a machine. I know that. Providing an adjustable catch on the jJ adjustment tool easily allows precise adjustment to the inlet bottom roller of the slide to account for the different diameters of different machines.

An embodiment of this invention will be described below.

First, the same configuration and operation as the conventional example described above will be outlined, and then the configuration and operation provided by the present invention will be described.

In FIG. 1, reference numeral 1 indicates a support shaft fixed to a spinning machine, to which a top arm 2 is attached in a known manner. The top arm 2 is depicted in FIG. 1 in the state of movement of the drafting device. The bottom rollers 3, 4 are driven in this state.
Above 5 is a top roller supported by top arm 2.
3′.

4' and 5' are on it. A bottom apron 7 runs on the bottom roller 4 and a tensile bar 6 attached in front thereof, and correspondingly there is provided a top apron 8 that runs on a top roller 4' and a cage (not shown).

The roving 9 has a pair of inlet top rollers and bottom rollers 3.3'
Enter the raft device from there.

A yarn monitoring device (not shown) is provided for the yarn lO emerging from between the pair of exit top rollers and bottom rollers 5, 5'. Finally, a signal is sent to the electromagnet in the form of an opening/closing pulse.

This electromagnet is arranged in a case 11 fixed to a support shaft l by a clamp 12.

Inside the case 11 is a top roller 3'.

One end of a support rail 13 extending along the rows 4' and 5' is held, and this support rail has an inverted U-shape in cross section as seen in FIG. The support rail guides and holds therein a rack 14 movably in the longitudinal direction, the teeth of the rack facing the open side of the support rail 13. The rack 14 plunges into the case 11, and the drive spring (
(not shown), the rack is pushed to the left in FIG. 1 in the support rail 13. In the illustrated operating state of the traft device and in the ready state of the roving stop device, the rack 14, which is pressed by the drive spring, is locked by the excitation rod of the previously mentioned electromagnet that engages with it and cannot move to the left.

When a yarn breakage signal is issued from the yarn monitoring device, this lock is disengaged and the drive spring causes the rack 14 to move limitedly to the left in the support rail 13.

The rack 14 thereby moves with a slide 15 which rests on the support rail 13 and meshes with the teeth of the rack, this slide 15 holding a guide 16 which extends to the area below the inlet top roller 3'. A stop key 17 is supported on the protruding end.

In the ready position of the roving stop (FIG. 1), this stop key 17 is spaced to the right from the clamping point of the draft device between the inlet top roller and the bottom roller 3.3'.

However, when the rack 14 and slide 15 move due to thread breakage and are pushed to the left by the drive spring as described above, the stop key 17 first slides on the hill of the entrance bottom roller 3 and the tightening is interrupted at the point where the guide This is because part 16 is held in limited movement in slide 15 against compression spring 18.

By sliding the stop key 17 in this way, the roving 9
At the same time, the top roller 3' is lifted off from the bottom roller 3, and the roving is tightened between itself and the top roller 3', which is stopped at that time, to stop the roving from moving forward. This slide 15 is the lower part 15a
and an upper part 15b, the lower part 15a of which forms opposed i19 that meshes with the teeth of the rack 14, and the upper part 15b is supported by sliding over the closed surface of the support rail. , and the lower part ISa is connected and held, and the teeth 19 of the lower part 15a are engaged with the rack 14. Therefore, after fixing the thread breakage, the upper part 15b
Holding the adjustment handle 20 formed in the left direction, move the slide 15 to the left and push it back to the right against the drive spring, and then move the lid and the locked base shown in FIG. can be placed in the ready position.

The structure and operation described above are exactly the same as those of the conventional example described above, so please refer to the conventional example described above for details.

Now, in order to fix the upper part 15b and the lower part 15a of the slide 15 to each other by the spring force according to the present invention, as is clear from FIG. This is achieved by pressing firmly. The two cover plates 21 are pushed into the open side of the support rail 13 from below to the lower ISa.
This can be done after fitting the lower part on the support rail, resulting in a loose attachment of the lower part on the support rail. Each cover plate 21
is located above the support rail 13, and there is a screw hole in the center (see Figure 3). Inside this large screw is a small diameter screw formed by adding a step to the shaft end of the headed pin 23. Journal 22 is screwed in. These two pins 23 connect the lower part 15a and the upper part 15b of the slide 15 to each other. These pins 23 pass through holes 24 in the upper part 15b with smooth shafts, and compression springs 25 wound around the shafts of the pins are formed on the underside of the pin heads on the one hand and above the holes 24 on the other hand. The hole 24 is in contact with the bottom of a recess in the upper part 15b, which is larger than the hole 24. Upper part 15b
is supported by the surface of the support rail 13 by a sliding portion 26 formed therein, so that the upper part 15 is supported as shown in FIG.
The compression spring 25 supported by b presses the head of the pin 23 upward and the lower part 15 through the cover plate
The lower part 15a is lifted by the connection between a and the pin 23, resulting in elastic fixation of the two parts of the slide 15 with each other and engagement of the rack 14 and the teeth 19.

This engagement resists the fixing force of the elastic compression spring,
For example, it can be easily removed by moving the lower part 15a or the guide part 16 by hand. If you can touch the heads of both pins 23, connect the lower part 15a to the rack 14.
You could apply a force directly by hand to the head of the pin to remove it.

In this example, the head of the pin 23 is inserted into the hole in the upper part 15b. To disengage the teeth 19 from the rack 14 and move the slide 15 on the support rail 13,
Use the adjustment tool 27 that fits over the upper part 15b. The adjustment tool 27 has a cavity 28 that matches the adjustment knob 20 of the upper part 15b, so when it is covered, the upper part and the m adjustment part are aligned as shown in FIG. The adjuster 27 is provided with two protrusions 29 to be placed on the head of the pin 23, and these protrusions apply pressure to the head of the pin 23 by pushing down the adjuster 27 placed over the upper part 15b. , move the pin and lower part 15a against the compression spring 25 until the tooth 19 is free from the rack 14. This allows the slide 15 to be moved to a desired adjustment location on the support rail 13 by means of the depressed adjustment tool. A stopper 30 is placed on the adjuster 27 for accurate adjustment. This catch 30, as shown in FIG. 1, is brought into contact with the inlet bottom roller 3 at its rim for correct adjustment of the stop key 17 to the tightening point between the rollers 3, 3'. When the adjuster 27 is removed from the slide 15, the slide 15 again engages with the rack 14 under the force of the compression spring 25 at the adjustment position reached at that time.

The stopper 30 is attached to the adjuster 27 so that it can be adjusted according to the mark 33 by means of an elongated hole 31 and a set screw 32. Since the marks 33 are separated to match the diameters of the various bottom rollers actually used, the catch 30 can be adjusted to provide the correct adjustment to the slide 15 according to the bottom roller diameter of each machine.

Therefore, in order to adjust and change the adjustment of the slide 15 relative to the rack 14, only a forceful push and a corresponding sliding movement are necessary.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a spinning machine drafting device with an adjustment section disposed above the slide, partially shown in cross section, and FIG. ! ! Fig. 3 is an enlarged side view of the main part, with a part cut away, showing the state in which the lower part of the slide is pushed down and disengaged from the rack. Fig. 3 is a sectional view taken along the ■-m line in Fig. 2. . In the figure, 3, 4.5 are bottom rollers, 3', 4'
, 5' is a tumbler, 9 is a roving, 10 is a thread, 13 is a support rail, 14 is a rack, 15 is a slide, 15a is a slide lower part, 15b is a slide upper part, 17 is a stop key, 19 is a tooth, 20 21 is an adjustment handle, 21 is a cover plate, 23 is a pin, 24 is a hole, 25 is a compression spring, 26 is a sliding part, 27 is an adjustment tool, 28 is a cavity, and 29 is a protrusion.

Claims (5)

[Claims] (1) It has a stop key which is moved to the tightening point between the inlet top roller and the inlet bottom roller during thread breakage, and this stop key lifts the said top roller from the said bottom roller and removes the roving from the stop key. The forward movement of the roving is stopped by pressing it between the top roller and the stop key, which is connected to a slide, which is a U-shaped section that extends over the draft area and is fixed to the machine. It rests movably in the longitudinal direction on a support rail, in which the rack is guided so that it can be moved with teeth in the area of the open support rail, the upper part of the two-part slide being mounted on the support rail. a spinning machine draft which covers the surface opposite the open side of the rail and is supported slidingly over this, and whose underside, connected thereto and enveloping the supporting rail, engages with the rack and the clamp by means of teeth formed in it; A roving stopping device for a spinning machine draft device, characterized in that an upper portion 15b and a lower portion 15a are fixed to each other by a spring force. (2) at least one pin 23 whose shank passes through a hole 24 in the upper part 15b with play and is inserted into the lower part 15a; The roving stop device for a spinning machine draft device according to claim 1, further comprising a compression spring 25 in contact with the upper surface of the hole. (3) that the lower part 15a with teeth 19 has two cover plates 21 which cover the closed surface of the support rail 13, in the center of which a pin 23 is screwed; A spinning machine draft according to claim (2), characterized in that the lower part 15a and the upper part 15b fixed to the lower part 15a have a sliding part 26 for riding on the surface of the support rail. Equipment roving stop device. (4) A force resisting the compression spring 25 is applied to the head of the pin 23 by the adjuster 27 covering the upper part 15b of the slide 15, and the lower part 15a of the slide, which is moved together with the pin, is moved to the rack 14 with its teeth 19. on a support rail in a roving stop device of a spinning machine drafting device according to claim 3, characterized in that the adjustment is carried out by movement of an adjustment tool along the longitudinal direction of the support rail 13. How to adjust the slide. (5) The adjustment tool 27 has a cavity 28 that matches the adjustment handle 20 formed on the upper part 15b of the slide 15, and has a protrusion 29 that rests on the head of the pin 23 that connects the upper part 15b and the lower part 15a. Device for carrying out the method according to claim 4, characterized in that a catch (30) is arranged in the adjustment part, which is adapted to contact the inlet bottom roller (3) in an adjustable manner.