JPH04131671U - Draft device with fiber bundle droop prevention device - Google Patents

Abstract

(57) [Summary] [Purpose] When the distance between the rollers of the drafting device is widened in order to spin fibers with long fiber length, it is possible to prevent the fiber bundles from hanging between the rollers and to separate the fiber bundles from adjacent ones. An object of the present invention is to obtain a draft device that can smoothly supply a front roller. [Structure] A gangway is arranged between the rollers of a drafting device in which the roller interval is set widely to prevent the fiber bundle from hanging down in that part.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a draft device equipped with a fiber bundle droop prevention device.

0002

[Conventional technology]

The gauge between each roller in the drafting device corresponds to the fiber length of the fiber to be drafted. The longer the fiber length, the wider the roller interval, which stops spinning the yarn. rollers, or when setting fiber bundles in a drafting device. The fiber bundle hangs downward between the fiber bundles, and as a result, when spinning resumes, the fiber bundles hang down in front of the adjacent fiber bundles. It may not be fed smoothly to the rollers of the This is undesirable because it may cause nozzle clogging during twisting using the air spinning nozzle in the process. Various phenomena were observed.

0003

[Problem that the idea aims to solve]

When the fiber length is long and the distance between the rollers of the drafting device is wide, the Prevents the fiber bundle from hanging down and smoothly supplies the fiber bundle to the adjacent front roller. The purpose is to obtain a draft device that can

0004

[Means to solve the problem]

A draft device with wide roller spacing is equipped with a ramp between the rollers to prevent drooping. I placed a pool.

[0005]

[Effect]

When spinning and stopping yarn, the fiber bundle is caught by the gangway, preventing the fiber bundle from sagging. This prevents damage.

[0006]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

[0007] The draft device in Fig. 1 is a three-wire type, with a back top roller 1a and a back bottom roller. back roller pair 1 consisting of roller 1b, middle top roller 2a and middle bottom roller a middle roller pair 2 consisting of a roller 2b, a front top roller 3a and a front roller It consists of a front roller pair 3 consisting of a tom roller 3b, and a middle top roller 2. a, apron bands 4a and 4b are mounted on the middle bottom roller 2b, respectively. Ru. The configuration of the draft device described above is not different from that of conventional draft devices. stomach.

[0008] However, in the above embodiment, the back roller pair 1 and the middle roller pair of the draft device are In other words, between roller pairs 1 and 2 where the distance between the roller pairs is set wide, A wrap 5 is provided.

[0009] As shown in FIG. 1, the ramp 5 has a pair of partition plates 7 provided on a base plate 6. However, the distance between the partition plates 7 is nipped by the pair of back rollers 1, and the distance between the partition plates 7 is Maintaining an interval slightly wider than the width of the fiber bundle S passing through pair 2, and in the traveling direction of the fiber bundle S The capacitor 8 is provided in an inverted V shape to regulate the width of the fiber bundle S. This brings about the effect of smoothly introducing the fiber bundle S.

0010 The substrate 6 of the gangway 5 passes between the pair of rollers 1 and 2 during spinning. It is located slightly below the fiber bundle S to avoid contact with the fiber bundle S during spinning. is being kept. Further, in the above embodiment, a partition plate 7 is provided on the substrate 6. However, it may be a simple flat plate without the partition plate 7. Furthermore, the controller The capacitor 8 is made of a block body with a funnel-shaped through hole, and the large diameter opening side is flat. The width of the fiber bundle S passing through the through hole is restricted.

[0011] Now, it is pulled out from a can (not shown) and fed through the trumpet guide 9. The fiber bundle S that has been removed has a back roller pair 1, a middle roller pair 2, and a front roller pair 3. It is drafted while passing sequentially to form a thread Y. During normal spinning, the fiber bundle S is Since the fiber bundle S between the roller pair 1 and 2 is drafted between the roller pair 1 and 2, the fiber bundle S is stretched between the roller pair 1 and 2. As shown in Fig. 2, the flow from roller pair 1 to roller pair 2 is Supplied without contact.

0012 On the other hand, when spinning is stopped, the draft device is stopped and the fiber bundle S is Since the stretching force applied to it is removed, the fiber bundle S sag slightly due to its own weight. However, in the present invention, there is a ramp between the back roller pair 1 and the middle roller pair 2. 5, the fiber bundle S is received by the gangway 5 and is placed in the back row. Between roller pair 1 and middle roller pair 2, it is prevented from hanging down significantly. For this reason , when resuming spinning, the fiber bundle may not be fed smoothly to middle roller pair 2, or Nozzle clogging of air spinning nozzles that may cause drafts or be adjacent to draft equipment. It is possible to completely prevent this from happening.

[0013] Next, the draft device shown in FIG. 4 as a second embodiment is of a five-wire type, and has a pair of back rollers. 10, fourth roller pair 11, third roller pair 12, second roller pair 13, and front roller pair 14, each top roller and bottom roller of the fourth roller pair 11 and the second roller pair 13. Apron bands 15a and 15b are mounted on the racks, respectively. And the above draft equipment The configuration of the device is the same as that of a conventional 5-wire draft device.

[0014] In this second embodiment, the back roller pair 10 and the fourth roller of the drafting device are ramps 16a, 16b between the roller pair 11 and between the third roller pair 12 and the second roller pair 13 , capacitors 17a and 17b are provided.

[0015] The ramps 16a, 16b and capacitors 17a, 17b are shown in the first embodiment. There is no difference in structure from the above-mentioned one, and this second embodiment also has the same structure as the one described above. As in the first embodiment, the fiber bundle is placed between the back roller pair 10 and the fourth roller pair 11. , and is prevented from hanging between the third roller pair 12 and the second roller pair 13.

[0016]

[Effect of the idea] As described in detail above, the draft device of this invention has a wide roller spacing. Is a ramp to prevent drooping installed between the rollers of the draft device? When spinning yarn from a long fiber bundle, the roller spacing in the drafting device By arranging a ramp with a fiber bundle passage in a wide part of the When the fiber bundle is set, the fiber bundle hangs downward, and as a result, the fiber bundle hangs downward at the start of spinning. If the bundle is not fed smoothly to the adjacent front roller or is a source of incorrect draft. This may cause nozzle clogging in the air spinning nozzle, which is the next process after the draft device. Phenomena such as causative factors are prevented, and stable spinning can be performed efficiently.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a side view of the drafting device of the present invention, showing the state when yarn is being spun.

FIG. 3 is a side view of the drafting device of the present invention, showing a state when yarn spinning is stopped;

FIG. 4 is a perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

1,10 Back roller pair 2 Middle roller pair 3,14 Front roller pair 5, 16a, 16b gangway 8, 17a, 17b capacitor 11 4th roller pair 12 Third roller pair 13 Second roller pair

Claims (1)

[Scope of utility model registration request] 1. A draft device equipped with a fiber bundle droop prevention device, characterized in that a droop prevention ramp is disposed between the rollers of the draft device in which the roller spacing is set widely.