CN110093692B

CN110093692B - Fibre strand gathers device

Info

Publication number: CN110093692B
Application number: CN201910465626.2A
Authority: CN
Inventors: 刘红艳; 李志民; 姚艳菊; 刘娟
Original assignee: Zhongyuan University of Technology
Current assignee: Zhongyuan University of Technology
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2021-11-23
Anticipated expiration: 2039-05-30
Also published as: CN110093692A

Abstract

The invention provides a fiber strand collecting device, which comprises: the fiber bundle output device comprises a driving shaft, a rotating cover, fiber strands, fiber bundles and an output round roller set, wherein the rotating cover is driven by the driving shaft to rotate and is in a structure with a small opening and a large belly, a condensation groove is arranged in the rotating cover, the middle part of the inner wall of the condensation groove is provided with an included angle a which is 30-120 degrees, a cover cap is arranged at the upper part of the condensation groove, the cover cap is arranged at the upper opening of the rotating cover, an insertion hole is arranged at the eccentric position on the cover cap, an insertion piece is inserted into the insertion hole, the middle part of the cover cap is also provided with a yarn guide hole, and the fiber bundles are guided out from the yarn guide hole and enter the output round roller set. The beneficial effects are as follows: the yarn formed by the method has less hairiness, and the subsequent fabric has good wear resistance; the parallel fiber straightness is good, and the yarn strength is high; the twist of the yarn is properly reduced, the yarn discharging speed can be increased, and the yield is improved.

Description

Fibre strand gathers device

Technical Field

The invention relates to the field of spinning frames, in particular to a fiber strand gathering device.

Background

A special problem exists in the normal spinning process of ring spinning frames, in which the fibre sliver delivered from the drafting zone is twisted and wound by the twisting and winding mechanism via the yarn guide hook, in which process the twist produced by the twisting mechanism is transferred upwards along the sliver, through the yarn guide hook, to the nip of the first round roller set, where the twisting triangular zone is formed. Because the twist transmission path is too long, the control of the fibers in the fiber strand in the twisting triangular area is unstable, so that the yarn has more hairiness and uneven yarn strength, and the breakage is easy to occur in the production process.

At present, much research is carried out on the spinning method for reducing the twisting triangular space, and particularly, the negative pressure gathering spinning technology is mature. The Chinese patent application with publication number CN102517703A discloses a method for improving the stability of airflow for lattice apron compact spinning, which adds a fence-shaped airflow guide plate above the gathering area of the compact spinning device, and the improvement can help to reduce the spinning triangle area and the quantity of harmful hairiness, but the lattice apron type gathering device needs a large amount of negative pressure and has high energy consumption. There are also other fiber aggregation spinning methods, for example, chinese patent publication No. CN 103225144a discloses a four-roller spinning frame having a pneumatic twisting mechanism in a four-roller drafting mechanism, in which a compressed air is introduced into a gas rotating chamber to rotate, and a certain amount of twist aggregation is applied to the introduced fiber strands by the rotating air flow. The device and the method need a large amount of compressed air, have high energy consumption, and have extremely high requirements on auxiliary components such as air blowing, air extraction and the like, and are not easy to implement. The problem of how to further reduce the energy consumption in the spinning process on the premise of improving the yarn quality and keeping the yarn stable always troubles spinning enterprises.

Disclosure of Invention

The invention provides a fiber strand gathering device for solving the problems in the prior art.

The technical scheme of the invention is realized as follows:

a fiber strand collecting device comprising: the fiber strand collecting device is arranged at the front part of the first round roller set and further comprises a rotating cover, fiber strands, a fiber bundle and an output round roller set, the driving shaft is connected with the rotating cover, the rotating cover is driven by the driving shaft to rotate, the rotating cover is of a structure with a small opening and a big abdomen, a collecting groove is arranged in the rotating cover, an included angle a is formed in the middle of the inner wall of the collecting groove and ranges from 30 degrees to 120 degrees, a cover cap is arranged at the upper part of the collecting groove and is installed at the upper opening of the rotating cover, an inserting hole is formed in the eccentric position of the cover cap, an inserting piece is inserted into the inserting hole, a yarn leading hole is further formed in the middle of the cover cap, and the fiber bundle is led out from the yarn leading hole and enters the output round roller set.

The included angle a is 40-110 degrees.

The output round roller group is positioned at the front end of the yarn guiding hole, and the yarn guiding hole is of a bottleneck-shaped structure with a smooth inner wall.

A fiber strand gathering device of a spinning machine.

The roving bobbin is wound with roving slivers, the roving slivers are unwound from the roving bobbin and enter the drafting mechanism through the sliver guide rods and roving bell mouths, the fiber sliver collecting device is arranged at the front part of the drafting mechanism, a yarn guide hook and a twisting winding mechanism are arranged at the front end of the fiber sliver collecting device, the roving slivers are changed into fiber slivers after passing through the drafting mechanism and then enter the fiber sliver collecting device, and fiber bundles formed after the fiber slivers are collected are led out by the output roller set and enter the twisting winding mechanism through the yarn guide hook.

The drafting mechanism comprises a first round roller set, a second round roller set and a third round roller set, and the first round roller set, the second round roller set and the third round roller set are sequentially arranged from front to back in the drafting mechanism.

The twisting and winding mechanism consists of a steel wire ring, a ring plate provided with a ring, a spindle blade and a bobbin, wherein the steel wire ring is arranged on the ring, the ring is arranged on the ring plate, the ring plate moves up and down according to a certain rule, the spindle blade penetrates through the center of the ring and is arranged on the spindle blade, and the bobbin is arranged on the spindle blade and is driven by the spindle blade to rotate at a high speed.

The invention has the beneficial effects that:

(1) the device does not need a negative pressure air suction device, and has low energy consumption;

(2) the device utilizes the action of centrifugal force to gather fiber strands, has no blowing action, and is more stable in strand gathering;

(3) when the fiber strand is drawn out, a small amount of twist is applied to the strand due to rotation, and the strand is more stable before entering a twisting and winding mechanism;

(4) the device of the invention gathers the fed fiber strand through the centrifugal force, and applies a certain twist to the fiber strand when being led out by the yarn leading roller, so that no twisting triangular area is formed when the twisting mechanism twists the gathered fiber strand, the formed yarn hairiness is less, and the wear resistance of the subsequent fabric is good; the fiber has good parallel straightness and high yarn strength.

(5) Under the condition that the yarn strength meets the requirement, the twist of the yarn can be properly reduced, the winding speed is improved, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view showing the structure of a fiber strand collecting device;

FIG. 2 is a schematic view of the structure of the rotating cover;

FIG. 3 is a schematic view of the structure of the cover;

FIG. 4 is a schematic structural view of a coagulation bath with smooth curved surfaces;

FIG. 5 is a schematic view of a coacervate groove with irregular included angles;

fig. 6 is a schematic structural view of a spinning frame equipped with a fiber strand gathering device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in FIGS. 1 to 3, a fiber strand collecting device comprises: the fiber strand collecting device 25 is arranged at the front part of a first round roller set 9 of the drafting mechanism, the fiber strand collecting device 25 also comprises a rotating cover 2, fiber strands 8, fiber bundles 6 and an output round roller set 7, the driving shaft 1 is connected with the rotating cover 2 and drives the rotating cover 2 to rotate, the rotating cover 2 is in a structure with a small opening and a big belly, a condensing groove 10 is arranged in the rotating cover 2, an included angle a is arranged in the middle of the inner wall of the condensing groove 10, the size of the included angle a has a large influence on the collecting effect of the fiber strands 8, so the set range of the included angle a is 30-120 degrees, a cover cap 3 is arranged at the upper part of the condensing groove 10, the cover cap 3 is arranged at the upper opening of the rotating cover 2, an inserting hole 5 is arranged at the eccentric position on the cover cap 3, an inserting piece 11 is inserted in the inserting hole 5, the inserting piece 11 is a round pipe with a central hole, the specifications of the inner diameter d of the inserting piece 11 are various, different inserting pieces 11 can be adopted according to different yarn raw materials and yarn counts, the middle part of the cover cap 3 is also provided with a yarn guiding hole 4, the yarn guiding hole 4 is of a bottleneck-shaped structure with a smooth inner wall, so that a fiber bundle 6 is conveniently led out from the yarn guiding hole 4, and the fiber bundle 6 is led out from the yarn guiding hole 4 and enters an output round roller set 7.

In the present invention, the inner wall of the condensation tank 10 shown in fig. 4 to 5 may also be a smooth curved surface or have an irregular included angle.

The driving shaft 1 can rotate forwards and backwards, whether the driving shaft 1 needs to rotate forwards or backwards is determined according to the twist direction of the spun yarn, a certain amount of S twist is applied to the fiber strand 8 when the driving shaft 1 rotates forwards, a certain amount of Z twist is applied to the fiber strand 8 when the driving shaft rotates backwards, the rotating speed of the driving shaft 1 is determined according to process parameters such as the output speed of the spun yarn and the yarn count, the rotating speed of the driving shaft 1 determines the number of the applied twists of the fiber strand 8, and the set range of the number of the twists is 6-16, preferably 10-13.

Preferably included angle a is 40 ° to 110 °, more preferably included angle a is 80 ° to 100 °.

A spinning frame as shown in fig. 6, comprising a fiber bundle gathering device 25 as claimed in any one of claims 1 to 3.

The spinning machine also comprises a roving bobbin 17, a guide bar 15, a drafting mechanism 24 and a twisting and winding mechanism, roving slivers are unwound from the roving bobbin 17 and enter the drafting mechanism 24 through the guide bar 15 and a roving bell mouth, a first round roller set 9, a second round roller set 12 and a third round roller set 13 in the drafting mechanism 24 are sequentially arranged from front to back, the roving slivers are drafted by three round roller sets of the drafting mechanism 24, fiber strands 8 output from the first round roller set 9 enter a rotating cover 2 through a plug-in component 11 on a cover cap 3, the rotating cover 2 is driven by a driving shaft 1 to rotate, the fiber strands 8 are condensed in a condensing groove 10 under the action of centrifugal force, a certain amount of twist is applied, the fiber strands 8 form tightly arranged fiber bundles 6 and are led out from a yarn guide hole 4 on the cover cap 3 to an output round roller set 7 and enter the twisting and winding mechanism 26 through a yarn guide hook 18, and the twisting and winding mechanism 26 is formed by a steel wire ring 19, a guide rod 15 and a roving bell mouth, The ring steel plate comprises a ring plate 20 provided with a ring, a spindle blade 23 and a bobbin 22, wherein the spindle blade 23 penetrates through the center of the ring steel 21, the bobbin 22 is arranged on the spindle blade 23 and is driven by the spindle blade 23 to rotate at a high speed, a traveler 19 is arranged on the ring steel 21, the ring steel 21 is arranged on the ring steel plate 20, and the traveler 19 with a fiber bundle 6 is driven by the bobbin 22 rotating at a high speed to rotate around the ring steel to complete twisting action on the fiber bundle 6 so as to form yarns; at the same time, the ring plate 20 makes a lifting motion according to a certain rule, so that the yarn is wound on the bobbin 22 according to a certain rule.

According to different raw material properties and process selection of the fiber strand 8, different fiber bundle 6 leading-out tensions can be selected, and the routine control can be in the range of 1.01-1.03.

The first embodiment is as follows:

the spun yarn has the fineness of 60 yarns, the yarn is pure cotton combed yarn, the yarn twisting direction is S twisted, the rotating speed of a spindle blade 23 of a spinning machine is set to 16000 r/min, the driving shaft 1 is selected to rotate clockwise and rotate positively, the number of twists applied when the fiber strands 8 are gathered is set to 12, the selected coagulation tank 10 with the inner wall included angle of 80 degrees is selected, the inner diameter d =2.0 of the plug-in 11 is selected, the rotating speed of the output round roller group 7 is adjusted, and the leading-out tension of the fiber bundle 6 is set to 1.01; after the parameters are set, the power supply is turned on to start spinning, the spun yarn is tested in a standard laboratory, and the comparison of the spun yarn and the ring spinning test result under the same condition shows that the number of the harmful hairiness value is reduced by 47 percent, and the average breaking strength unevenness is reduced by 11.2 percent.

Example two:

the spun yarn has the fineness of 30 yarns, the yarn is polyester-cotton 35/65 blended yarn, the yarn twisting direction is S twisted, the rotating speed of a spindle rod 23 of a spinning machine is set to 15000 r/min, the driving shaft 1 is selected to rotate clockwise and rotate positively, the number of twists applied when the fiber strands 8 are gathered is set to 15, the inner wall of the gathering groove 10 with a smooth curved surface is selected, the inner diameter d =3.0 of the plug-in 11 is selected, the rotating speed of the output roller group 7 is adjusted, and the extraction tension of the fiber bundle 6 is set to 1.02; after the parameters are set, the power supply is turned on to start spinning, the spun yarn is tested in a standard laboratory, and the comparison of the spun yarn and the ring spinning test result under the same condition shows that the number of the harmful hairiness value is reduced by 39.4%, and the average breaking strength unevenness is reduced by 10.3%.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fiber strand collecting device comprising: the drive shaft, fibre palpus strip gathers the device and sets up in the front portion of first round roller set, its characterized in that: the fiber strand gathering device further comprises a rotating cover, fiber strands, fiber bundles and an output round roller set, wherein the driving shaft is connected with the rotating cover, the rotating cover is driven by the driving shaft to rotate, the rotating cover is of a structure with a small opening and a big belly, a gathering groove is arranged in the rotating cover, an included angle a is formed in the middle of the inner wall of the gathering groove, the included angle a is 30-120 degrees, a cover cap is arranged at the upper part of the gathering groove, the cover cap is installed at the upper opening of the rotating cover, an inserting hole is formed in the eccentric position of the cover cap, an inserting piece is inserted into the inserting hole, a yarn leading hole is further formed in the middle of the cover cap, and the fiber bundles are led out from the yarn leading hole and enter the output round roller set;

the fiber strand collecting device is applied to a spinning machine, the spinning machine further comprises a roving bobbin, a guide bar, a drafting mechanism and a twisting and winding mechanism, roving strands are wound on the roving bobbin, the roving strands enter the drafting mechanism through the guide bar and a roving horn after being unwound from the roving bobbin, the fiber strand collecting device is arranged at the front part of the drafting mechanism, a yarn guide hook and the twisting and winding mechanism are arranged at the front end of the fiber strand collecting device, the roving strands are changed into fiber strands through the drafting mechanism and then enter the fiber strand collecting device, and fiber bundles formed after the fiber strands are collected are led out by the output circular roller group and enter the twisting and winding mechanism through the yarn guide hook.

2. The fiber bundle gathering device as set forth in claim 1, wherein: the included angle a is 40-110 degrees.

3. The fiber bundle gathering device as set forth in claim 1, wherein: the output round roller group is positioned at the front end of the yarn guiding hole, and the yarn guiding hole is of a bottleneck-shaped structure with a smooth inner wall.

4. A spinning frame is characterized in that: comprising a fiber strand collecting device according to any of claims 1 to 3.

5. A spinning frame as claimed in claim 4, characterized in that: the roving bobbin is wound with roving slivers, the roving slivers are unwound from the roving bobbin and enter the drafting mechanism through the sliver guide rods and roving bell mouths, the fiber sliver collecting device is arranged at the front part of the drafting mechanism, a yarn guide hook and a twisting winding mechanism are arranged at the front end of the fiber sliver collecting device, the roving slivers are changed into fiber slivers after passing through the drafting mechanism and then enter the fiber sliver collecting device, and fiber bundles formed after the fiber slivers are collected are led out by the output roller set and enter the twisting winding mechanism through the yarn guide hook.