JPS6052631A - Dust remover for open-end spinning frame - Google Patents

Abstract

PURPOSE:The cross section of the opening for dust removal is rapidly expanded vertically and/or lengthwise from the inlet toward the trash box to inhibit the suction of trash from the trash box to the spinning rotor. CONSTITUTION:The distances H1 and H2 between the upper and lower faces of the opening for trash removal and the upper and lower faces of the trash box, respectively are set so that they satisfy the equations: 0.1H0<=H1, H2<=0.6H0 where H0 is the vertical height of the opening for the dust removal and equations: 0.05W0<=W1, W2<=0.25W0 where W1 and W2 are the distances between the fore and back walls at the inlet of the dust-removal opening and the fore and back walls of the opening for dust removal and W0 is the width between fore and back faces at the inlet of the dust-removal opening. The flows of air suction 14 and 15 are separated from the flying trace of the trash to reduce the suction of trash into the rotor.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a dust removal device for a rotor type oven-end spinning machine. More specifically, the present invention provides a vertical combing roller that is rotatably arranged around a vertical axis, a trash box that removes trash discharged from the combing roller, and a dust removal opening that communicates the combing roller and the trash box. This is a dust removal device designed to prevent trash, dust, etc. from accumulating on the spinning rotor of an oven-end spinning machine.

Prior art In a conventional self-exhausting rotor type oven-end spinning machine with combing roller separation, the sliver is sent to the combing roller by a feed roller and a presser pressed against the feed roller, and the sliver is fed to the combing roller by a
The opened l1si is sent through a channel to a scanning rotor, where it is heated in a focused manner.

On the other hand, the trash discharged from the combing roller into the trash box is carried by the trash transporting air through the trash pipe to the cotton collecting room.

In such a conventional self-exhaust type rotor type oven-end spinning machine with combing roller separation, there is a flow that is sucked from the trash box to the spinning rotor due to the suction action of the spinning rotor. Trash, neps, and fibers with high air resistance that are once discharged from the combing roller into the trash box ride this flow and are sucked from the trash box to the spinning rotor, becoming the core of trash accumulation in the spinning rotor. , problems such as periodic unevenness, slab breakage, and thread breakage occur.

Purpose of the Invention The present invention utilizes a flow drawn into a spinning rotor from a trash box attached to a conventional self-exhausting rotor type oven-end spinning machine with combing roller separation. 1. A dust removal device for an oven-end spinning machine that eliminates suction from the lash box to the spinning rotor, allows smooth spinning of oven-end yarn, and makes it possible to obtain yarn of good quality. The purpose is to provide.

Structure of the Invention The present invention provides a rotor-type oven-end spinning machine comprising a vertical combing roller, a trash box, and a dust removal opening that communicates the combing roller and the trash box. The above-mentioned purpose is achieved by a dust removal device for a rotor-type open-end spinning machine, characterized in that at least one of the distance between the top and bottom walls of the dust removal opening connected to the top and bottom surfaces of the box and the distance between the front and rear walls of the dust removal opening rapidly increases. Achieve.

As for the degree of rapid expansion in the present invention, the upper and lower surfaces and the front and rear surfaces of the dust removal opening are configured so that the dust removal opening expands in the vertical direction and forward and backward direction, respectively, beyond the locus of the trash released by centrifugal force from the combing roller. Then, spin from the trash box. - The suction air flow to the tank collides with the trash discharged from the Komin'j O-7,
It is preferable to prevent it from being pushed back to the combing roller.

Specifically, the distance H+, H2 between the upper and lower surfaces of the dust removal opening inlet and the upper and lower surfaces of the trashco box is 0, IHo≦H+ (or H2> ≦0.61-1.

or the distances Wl and W2 between the front and rear walls of the dust removal opening inlet and the front and rear walls of the dust removal opening are 0.05Wo≦W+ (or W2) ≦0.25W.

It is preferable to set it so that it satisfies the following.

Furthermore, by setting the distance from the circumferential surface of the combing roller to the end surface of the trash box to be 2d≦L≦3d with respect to the radius d of the combing roller, the trash emitted from the combing roller is iK at the end surface of the trash box. Re-suction by the curling combing roller is reduced, which is preferable.

DESCRIPTION OF THE EMBODIMENTS Referring now to the accompanying drawings, which illustrate embodiments of the invention,
The present invention will be described in detail.

FIG. 1 is a plan view of an embodiment of a self-exhausting rotor type oven-end spinning machine with combing roller separation according to the present invention;
FIG. 2 is a sectional front view of FIG. 1.

The oven-end spinning machine of the present invention includes a feed roller 2, a prefuser 3, a combing roller 4, a channel 5 extending from the periphery of the combing roller 4 to a spinning rotor 6, a spinning rotor 6, and a trash box 8.
It consists of The combing roller 4 and the trash box 8 are communicated through a dust removal opening 21. Note that the dust removal opening 21 is formed by a pair of front and rear walls that are arranged close to the combing roller 4 and located in front and behind in the rotation direction of the combing roller 4.

7- In FIGS. 1 and 2, sliver 1. Then, it is sent to the combing roller 4 by the feed roller 2 and the prefixer 3 pressed by the feed roller 2. As the combing roller 4 rotates, the sliver 1 is opened by the combing roller 4, and the opened #A fibers are sent through the channel 5 to the spinning rotor 6, where they are focused and heated by the spinning rotor 6 to open the end. It becomes spun yarn.

On the other hand, as the combing roller 4 rotates at high speed, trash (dust) is generated by the combing roller 4 due to centrifugal force.
12 is discharged into the trash box 8 through the dust removal opening 21.

The above structure is the same as a conventional combing roller separating self-exhausting rotor open-end spinning machine. In a conventional self-exhausting rotor-type open-end spinning machine with combing roller separation, the trash box 8 is narrow, and the suction flow of the spinning rotor 6 and the suction flow of a blower (not shown) intersect, and the waste from the combing roller 4 is mixed. The trash 12 once discharged to the trash box 8 may be re-suctioned by the suction flow to the spinning rotor 6.

To explain in more detail, the inside of the channel 5 becomes negative pressure due to the fan action of the spinning rotor 6, and this negative pressure extends to the front wall of the dust removal opening 21 (the front wall surface when viewed in the rotational direction of the combing roller), and as a result, A front spinning rotor suction flow 14 toward the spinning rotor is generated around this area.

Further, a suction flow by the blower generates a conveying air flow 11 at the bottom of the trash box, and the area around the dust removal opening 21 becomes negative pressure due to the conveying air flow 11. In order to offset the negative pressure caused by this conveying air flow,
Also, a contact spinning rotor suction flow 15 toward the spinning rotor is generated.

In a conventional self-exhausting rotor type oven-end spinning machine with combing roller separation, - the above-mentioned front spinning rotor suction flow 14 and rear spinning rotor suction flow 15 intersect inside the trash box 8, and the trash A rotational flow occurs inside the box 8, and the trash, neps, and m-fibers with large air resistance are reversely attracted to the spinning rotor 6 by the front spinning rotor suction flow 14 and the rear spinning rotor suction flow 15, and the trash, neps, and m-fibers with large air resistance are drawn back into the spinning rotor 6 and become trash inside the spinning rotor 6. is deposited.

As a result of the presence of the flow 14.15 sucked from the trash box 8 to the spinning rotor 6, this flow 14.15 sucks dust from the trash box 8 through the channel 5 to the spinning rotor 6,
There was a problem in that the fibers got caught in the channel 5, causing troubles such as slabs and yarn breakage.

In the present invention, as shown in FIG. 2, the dust removal opening 21 facing the upper and lower surfaces 18, 19 of the trash box 8 and the front and rear walls 22, 23 of the trash box 8 is rapidly enlarged as it goes from the combing roller 4 to the trash box 8. are doing.

The degree of this rapid expansion is such that the trash 12 at the top and bottom released by the centrifugal force from the combing roller 4 expands in the vertical and front-back directions on the top and bottom and front and rear surfaces of the dust removal opening. Configure. in particular,
The distances H1 and H2 between the upper and lower surfaces of the dust removal opening inlet and the upper and lower surfaces of the trash box are the vertical height H of the dust removal opening inlet.
o, satisfies 0.1Ho≦H1<or H2)≦0.61-1°, and furthermore, the distance W11W2 between the front and rear walls of the dust removal opening inlet and the front and rear walls of the dust removal opening is For the width Wo between the front and rear surfaces, 0.05Wo≦W1 (also 1tW2)≦0.25
It is preferable to set it so that W O is satisfied.

Furthermore, the distance between the circumferential surface of the combing roller 4 and the end surface of the trash box 8 is the radius d of the combing roller 4.
It is preferable that 2d≦L≦3 (1).

With the configuration of the present invention, the trough box 8
The space inside is a space A1 surrounded by this space C and the lower surface 19 of the dust removal opening 21, and a space C and the trash. It is divided into a space B surrounded by the upper part 18 of the box.

In the space C, there is a flow of trash 12 released from the combing roller 4 and a conveying air flow 11,
Since the resistance is large, the suction flow 14.15 from the trash box 8 toward the spinning rotor 6 passes through spaces A and B with low resistance located near the top and bottom surfaces of the trash box. (The same applies to the front and rear surfaces.) That is, according to the present invention, at a location away from the circumferential surface of the combing roller 4, the upper and lower surfaces 18 of the dust removal opening 21.
The suction air flow 14.15 from the trash box 8 to the spinning rotor 6 along the line 19 and the trash 12 discharged from the combing roller 4 are clearly separated, so that the two flows do not collide, and the lash 12 is It will not be pushed back to the combing roller.

12- Note that in the very vicinity of the combing roller 4, the suction air flow 14.15 directed from the trash box 8 toward the spinning rotor 6 approaches the trash 12 discharged from the combing roller 4; The centrifugal force of the trash discharged from the trash box 8 is sufficiently large, and this centrifugal force overcomes air resistance, causing the trash 1 to 12 to move from the trash box 8 to the spinning rotor 6.
The waste 12 is not carried by the suction air flow 14 , 15 directed towards the combing roller 6 .

Next, examples of the present invention will be described based on data.

With respect to the dust removal opening inlet width Ho and Wo shown in Fig. 2, the distance to the trash box upper and lower surfaces 18.19 H1% H
2. Exclusionary opening model I! 22. Distance to 23 Wl, W2
Various trash boxes were manufactured by making various changes. Note that the distance from the circumferential surface of the combing roller 4 to the end surface of the trash box 8 is equal to the radius d of the combing roller in the conventional device (No. 1), and is 3 d in the embodiments (No. 2 to 5). I took it.

Average Il fiber length 18.8mm, fineness 4.3μo/1nc1
Short fiber content of 29.4%, strong (parallel! &li fibers of less than 1.13m+++)
Measuring m fibrous strength using a Bracelet tester with a clamp spacing of m > 67.700 psi, non-lint content 2
．． 8%, sliver gellen 4200r/6YD sliver spinning rotor rotation speed 60.000rpHl,
] - Minon roller rotation speed 800 Orpm.

Spinning was carried out for 4 hours at a trash exhaust pressure of -20 Il 1 m of water to obtain an oven-end spun yarn with a spinning count of Ne7s and a twist coefficient of 4.8.

The amount of trash deposited in the spinning rotor (l11(1/
kg) was measured, and the results were as shown in the following table.

(In this experiment, H+ = H2, W+ = W2,
In the present invention, H1≠H2 and W1≠W2 may be satisfied. ) (Left below) No, t-1+ /Ho W+ /Wo h Rush H
2/I-(OW2 /WOin product! (1110/k(
It) 10 0 10.7 2 0.1 0.05 4.1 3 0.15 0.075 2.0 4 0.25 0.125 1.8 5 0.5 0.25 1.6 of the invention Effects According to the present invention, the amount of impurities accumulated in the spinning rotor is significantly reduced, the yarn quality does not change over time, slabs and yarn breakage are reduced, and so-called periodic unevenness that repeatedly occurs in a certain period is eliminated. yarn of excellent quality can be spun. Furthermore,
The cleaning cycle of the spinning rotor can be significantly extended, labor is saved, and losses due to machine stoppage can be reduced.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a sectional front view of FIG. 1. 1...Sliver, 2...Feed roller, 3...
- Brezza, 4... Combing roller, 15-510. Channel, 6...Spinning rotor, 8
... Trash box 11... Trash conveyance flow, 12... Trash, 14.15... Flow sucked into the spinning rotor,
18...Trash box upper surface, 19...Trash box lower surface, 21...Dust removal opening, 22...Dust removal opening front wall, 22
...Dust removal opening rear wall Patent applicant Toyota Industries Corporation Daiwa Boseki Co., Ltd. Patent attorney Eiji Sannaka Patent attorney Kikue Yamamoto 16- Figure 1

Claims (1)

[Claims] 1. A vertical combing roller arranged rotatably around a vertical axis, a trash box for removing trash released from the combing roller, and II dust communicating with the combing roller and trash box. In a rotor-type oven-end spinning machine, the dust removal opening inlet is located close to the combing roller and is formed by a pair of front and rear walls located front and back when viewed in the rotation direction of the combing roller. A rotor type oven-end spinning machine characterized in that at least one of the distance between the upper and lower wall surfaces of the dust removal opening that connects to the upper and lower surfaces of the trash box and the distance between the front and rear walls of the dust removal opening rapidly increases as one moves toward the box. Removal rM device. 2. The rotor-type open-end spinning machine according to claim 1, wherein the upper and lower surfaces of the dust removal opening expand upward and downward beyond the locus of trash discharged from the combing roller by centrifugal force, respectively. Dust removal equipment. 3. The distance 1111t H1 between the lower surface of the dust removal opening inlet and the lower surface of the t-lash box is 0.1Ho≦H+≦0.6H with respect to the vertical height Ha of the dust removal opening inlet. A dust removal device for a rotor-type open-end spinning machine according to claim 1 or 2, which satisfies the following. 4. The distance fIll l-12 between the top surface of the dust removal opening inlet and the top surface of the trash box is 0, 1Ho≦To12≦0 with respect to the vertical height Ho of the dust removal opening inlet. 6H. A dust removal device for a rotor-type oven-end spinning machine according to claim 1, 2, or 3, which satisfies the following. 5. Any one of claims 1 to 4, wherein the front and rear walls of the dust removal opening expand forward and backward beyond the locus of trash released from the combing roller by centrifugal force, respectively. A dust removal device for a rotor type oven-end spinning machine according to item 1. 6. The distance W1 between the front wall of the dust removal opening entrance and the front wall of the dust removal opening is 0.05Wo≦W1≦0.25W with respect to the width Wo between the front and rear surfaces of the dust removal opening entrance. A dust removal device for a rotor-type oven-end spinning machine according to claim 1 or 5, which satisfies the following. 7. A patent claim in which the distance W2 between the rear wall of the dust removal opening inlet and the rear wall of the dust removal opening satisfies 0.05Wo≦W2≦0.25WO with respect to the width Wo between the front and rear surfaces of the dust removal opening inlet. A dust removal device for a rotor-type open-end spinning machine according to item 1, item 5, or item 6. 8. Any one of claims 1 to 7, wherein the distance from the circumferential surface of the combing roller to the end surface of the trash box satisfies 2d≦L≦3d with respect to the radius d of the combing roller. A dust removal device for a rotor type oven-end spinning machine according to item 1.