CN211199538U

CN211199538U - Compact spinning negative pressure tube

Info

Publication number: CN211199538U
Application number: CN201921714108.1U
Authority: CN
Inventors: 蔡先彪; 何新华; 徐汕文
Original assignee: Hunan Kelijia Textile Co ltd
Current assignee: Hunan Kelijia Textile Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-07
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a compact spinning negative pressure pipe, which comprises a negative pressure pipe body, wherein the pipe body section of the negative pressure pipe body comprises a guide surface, the pipe body section is internally contracted on the two side surfaces of the guide surface, and the pipe body section is provided with a mounting groove on the bottom surface; the negative pressure pipe body is also provided with a suction hole and a gathering groove which are communicated with the cavity, the gathering groove is obliquely arranged at equal intervals in the length direction of the pipe body, the surface of the gathering groove is wrapped with a grid ring, a detachable reed is arranged on the inner side face of the groove body of the gathering groove, the reed is an outward-protruding cambered surface reed, the protruding cambered surface of the reed abuts against the inner side face of the grid ring after being fixed, the width of the reed is 1/3-1/2 of the width of the groove body, and the reed is arranged in the center line position of the groove body and changes along with the shape change of the groove body. The utility model discloses can effectively improve the effect that gathers of yarn palpus strip, greatly reduce the filoplume at yarn palpus strip edge, improve the resultant yarn quality.

Description

Compact spinning negative pressure tube

Technical Field

The utility model relates to a textile processing technology field, concretely relates to negative pressure pipe device spins closely for spinning frame.

Background

The existing compact spinning technology is mainly formed by reforming a ring spinning frame, and the yarn strand is output and twisted after being gathered by adding a gathering device before twisting the yarn strand, so that the yarn strand is twisted in a parallel and compact state, and the drafting, gathering and separation are realized.

One of the realization modes of the functional gathering device is a negative pressure tube, the tube wall of the guide surface of the negative pressure tube is provided with a plurality of gathering grooves which are sleeved on the corresponding gathering grooves through a grid ring, each gathering groove corresponds to a yarn, under the action of negative pressure airflow, the yarn strand is output from the front opening of a front roller and then passes through the guide surface of the negative pressure tube, then is gathered on the gathering grooves while being conveyed along with the rotation of the grid ring, the yarn is pressed on a driving roller through an output leather roller at the downstream side of the grid ring and then is twisted through a spindle and a steel collar, so that the strand is gathered and rotated, the yarn strand is gradually converted into a cylinder from a flat belt shape, and the ends of the fibers are all twisted into the yarn to form a bundle of parallel and tightly gathered yarn. However, the design of the conventional negative pressure tube is too simple, the compactness of the yarn strand gathering is difficult to control, and the gathering effect is still to be improved although more negative pressure tubes are gathered, so that a certain amount of yarn hairiness is still generated on the edge of the yarn strand after the yarn strand passes through the negative pressure tube, and the shape gathering effect of the yarn strand is to be enhanced.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide a compact spinning negative pressure tube to solve the defects in the technical background.

The utility model provides a technical problem adopt following technical scheme to realize:

a compact spinning negative pressure pipe comprises a negative pressure pipe body, wherein the negative pressure pipe body is a special-shaped section pipe with a cavity, the top surface of the section of the negative pressure pipe body is a smooth cambered surface, the cambered surface is used as a guide surface, the section of the negative pressure pipe body is inwards folded on the side surfaces of two sides of the guide surface, and the bottom surface of the section of the negative pressure pipe body is provided with an installation groove; the negative pressure pipe body is further provided with at least one air suction hole communicated with the cavity and a plurality of strip-shaped gathering grooves, the gathering grooves are obliquely arranged at equal intervals in the length direction of the pipe body, the surfaces of the gathering grooves are wrapped with grid rings, detachable reeds are arranged on the inner side faces of the groove body of the gathering grooves, the reeds are convex arc-surface reeds, convex arc surfaces of the reeds abut against the inner side faces of the grid rings after being fixed, the width of each reed is 1/3-1/2 of the width of the groove body, the reed is arranged in the center line position of the groove body and changes along with the shape change of the groove body.

As a further limitation, the mounting groove is an I-shaped groove or a dovetail groove.

By way of further limitation, the tube body cross-section is asymmetrically adducted on both side surfaces of the guide surface.

Further, the number of the collecting grooves provided in the longitudinal direction of the negative pressure tube body is 5 to 6, and the number of the suction holes provided in the longitudinal direction of the negative pressure tube body is 3.

As a further limitation, the included angle between the collecting groove and the negative pressure pipe body in the length direction is 82-85 degrees.

As a further limitation, the inner side surface of the guide surface of the negative pressure pipe body corresponding to the position of the gathering groove is provided with an inserting groove, and the end part of the reed is detachably connected and fixed at the inserting groove in an inserting mode.

As a further limitation, the convex cambered surface of the reed is a circular arc cambered surface.

As a further limitation, the convex cambered surface of the reed is a plurality of arc-shaped or arc-shaped cambered surfaces which are uniformly arranged in the length direction of the reed.

Has the advantages that: the utility model relates to a closely spin negative pressure pipe is through lining the dress reed gathering the inslot side for gather the groove energy density distribution under the negative pressure condition more reasonable, make the fibre must the strip carry out the shape and gather the effect better, must the strip gather inseparabler, simultaneously, for the groove that gathers that does not take the reed, its must the filoplume quantity at strip edge can reduce more than 30%, improves fibrous thickness degree of consistency, is favorable to improving the uniformity between the spindle, improves the yarn quality.

Drawings

Fig. 1 is a schematic structural view of the preferred embodiment of the present invention with the reed removed.

Figure 2 is a cross-sectional side view of the embodiment of figure 1 with a spring sheet added.

Wherein: 1. a negative pressure tube body; 2. a suction hole; 3. a gathering tank; 4. a grid ring; 5. a guide surface; 6. A reed; 7. a cavity; 8. and (4) mounting the groove.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1-2, a preferred embodiment of a compact spinning negative pressure tube, in this embodiment, the compact spinning negative pressure tube comprises a negative pressure tube body 1, two ends of the negative pressure tube body 1 are closed, a cavity 7 is formed in the middle of the negative pressure tube body 1, three suction holes 2 are arranged on the negative pressure tube body 1, the negative pressure tube body 1 is a special-shaped tube body, the section of the pipe body is shown in figure 2, and comprises an upper surface as a guide surface 5, the guide surface 5 is a smooth continuous transition arc surface, six gathering grooves 3 are uniformly arranged on the guide surface 5, the gathering grooves 3 have the same shape and size, and the included angle between the gathering grooves and the negative pressure tube body 1 in the length direction is 82-85 degrees, the continuous inclined edge structure can have stronger influence on the mechanical property of the fiber strand in motion, so that the gathering effect is better, and the gathering groove 3 is sleeved on the surface of the gathering groove through the grid ring 4 in a working state.

The two sides of the section of the guide surface 5 of the negative pressure pipe body 1 are provided with asymmetric inward-folding edges, the two sides are connected with the bottom surface through the inward-folding edges, the section of the pipe body is provided with an installation groove 8 on the bottom surface, and in the embodiment, the installation groove 8 is a dovetail groove, so that the installation stability of the negative pressure pipe body 1 can be effectively improved.

In this embodiment, the inner side surface of the gathering tank 3 is provided with a slot structure, and the slot structure is correspondingly inserted with a detachable and replaceable reed 6, the reed 6 is a convex cambered reed, the convex cambered surface of the reed is abutted against the inner side surface of the grid ring 4 after being fixed, the width of the reed 6 is 1/2 of the width of the tank body of the gathering tank 3, and the reed is arranged at the center line position of the tank body and is changed along with the shape change of the tank body; one side of the spring leaf 6 is arranged inside the end surface of the gathering groove 3, and the other side is inserted into the slot structure for fixing.

The reed 6 can effectively improve the stability of the inner wind pressure in the cavity 7, so that the recovery rate and the recovery effect of short fibers in the yarn beard strips are improved by improving the contact points and the contact area of the yarn beard strips in the gathering groove 3 under the condition of properly improving the negative pressure, the yarn beard strips are immediately caught by airflow in the gathering groove 3 after going out from the front roller, are adsorbed on the surface of the grid ring 4 outside the gathering groove 3 and move forwards along with the grid ring 4, and the edges of the beard strips are dynamically gathered by the combination of the reed 6 and the grid ring 4, thereby reducing the amount of hairiness at the edges of the beard strips and improving the fiber quality.

In another embodiment, the convex arc surfaces of the reeds 6 are a plurality of arc-shaped arc surfaces uniformly arranged in the length direction of the reeds 6, the reeds 6 are more difficult to manufacture and wear more quickly, but the gathering effect of the reeds 6 on yarn strands is better, the reeds 6 in the structure shown in fig. 2 can be selectively used according to the process requirements, and during replacement, only the grid ring 4 needs to be taken down, then the reeds 6 are pressed down and force is applied to the opposite side of the position of the slot structure, so that the reeds 6 can be withdrawn from the slot structure and the corresponding reeds 6 can be replaced by reverse operation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.

Claims

1. A compact spinning negative pressure pipe comprises a negative pressure pipe body and is characterized in that the negative pressure pipe body is a special-shaped section pipe with a cavity, the top surface of the section of the pipe body is a smooth cambered surface, the cambered surface is used as a guide surface, the section of the pipe body is inwards folded on the side surfaces of two sides of the guide surface, and the section of the pipe body is provided with an installation groove on the bottom surface; the negative pressure pipe body is further provided with at least one air suction hole communicated with the cavity and a plurality of strip-shaped gathering grooves, the gathering grooves are obliquely arranged at equal intervals in the length direction of the pipe body, the surfaces of the gathering grooves are wrapped with grid rings, detachable reeds are arranged on the inner side faces of the groove body of the gathering grooves, the reeds are convex arc-surface reeds, convex arc surfaces of the reeds abut against the inner side faces of the grid rings after being fixed, the width of each reed is 1/3-1/2 of the width of the groove body, the reed is arranged in the center line position of the groove body and changes along with the shape change of the groove body.

2. The compact spinning negative pressure pipe of claim 1, wherein the mounting groove is an i-shaped groove or a dovetail groove.

3. The compact spinning negative pressure tube of claim 1, wherein the tube body cross section is asymmetrically adducted on both side faces of the guide surface.

4. The compact spinning negative pressure pipe according to claim 1, wherein the number of the collecting grooves provided in the longitudinal direction of the negative pressure pipe body is 5 to 6.

5. The compact spinning negative pressure pipe of claim 1, wherein the number of the suction holes arranged in the length direction of the negative pressure pipe body is 3.

6. The compact spinning negative pressure pipe of claim 1, wherein the angle between the collecting groove and the negative pressure pipe body in the length direction is 82-85 °.

7. The compact spinning negative pressure pipe of claim 1, wherein the negative pressure pipe body is provided with an insertion groove at the inner side of the guide surface corresponding to the position of the collecting groove, and the end part of the spring leaf is detachably connected and fixed at the position of the insertion groove by an insertion way.

8. The compact spinning negative pressure pipe of claim 1, wherein the convex arc surface of the reed is a circular arc surface.

9. The compact spinning negative pressure pipe of claim 1, wherein the outward convex arc surface of the reed is a plurality of arc-shaped or arc-shaped arc surfaces uniformly arranged in the length direction of the reed.