CN103789881B

CN103789881B - Drawing frame for ring spinner

Info

Publication number: CN103789881B
Application number: CN201310529734.4A
Authority: CN
Inventors: 汉斯·沙赫勒克尔; L·欧拉
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-31
Filing date: 2013-10-31
Publication date: 2016-06-22
Anticipated expiration: 2033-10-31
Also published as: CN103789881A; DE102012021399A1

Abstract

The invention provides a kind of drawing frame for ring spinner, described drawing frame has: a pair outlet roller (2,3) arranged in the downstream of draw zone (V), outlet roller is included output press roll (2) and the bottom roll (3) corresponding with this output press roll by this；It is positioned at the compacting zone (D) in the downstream of the pair of outlet roller (2,3)；And deliver pressure roller (5), wherein, described output press roll (2) is arranged to, relative at a right angle with the plane of described drawing frame (14) and through described bottom roll (3) the plane (13) of axis orientation, direction along described draw zone (V) offsets backward, and described draw zone (V) is angled downwards。

Description

Drawing frame for ring spinner

Technical field

The present invention relates to the drawing frame for ring spinner, this drawing frame has: a pair outlet roller arranged in the downstream of draw zone, and outlet roller is included output press roll and the bottom roll corresponding with this output press roll by this；It is positioned at the compacting zone in the downstream of the pair of outlet roller；And delivery pressure roller。

Background technology

The drawing frame of ring spinner is known, wherein, the sliver drafted in draw zone roll gap place between output press roll and corresponding bottom roll exits drawing frame, this bottom roll is wound, then therefrom so that the form of the line being twisted is exited drawing frame along the direction of yarn guide with a certain radian。When yarn guide moves slightly degree up and down, the length of the drafted sliver winding of bottom roll can be changed in limited scope。Learning from experience, the length that bottom roll is wound between tangent line (run-offtangent) (that is, yarn along its line unclamped from bottom roll) at roll gap and departing from is highly important for the stability of spinning process。Roll gap and the interval unclamped between point (that is, the contact point of bottom roll place tangent line) are too short and oversize result in increasing of yarn breakage。Now, common minimum and maximum spooling length value is all based on the empirical value that several years practice obtains。

In order to improve intensity and its lousiness of yarn, typically now in the offer compacting zone, downstream of draw zone。In this arrangement, the delivery pressure roller supported by bottom roll it is provided with in the downstream of output press roll。Compactor is set between output press roll and delivery pressure roller, exits the sliver of draw zone for suitably compacting。The sliver being compacted exits draw zone and winds delivery pressure roller at roll gap place, until unclamping a little, i.e. until the point of tangential contact bottom roll。

This considerably increases roll gap and the spooling length departed between tangent line, thus causing that spinning stability reduction the frequency along with yarn breakage increase。In order to this defect is maintained in rationally limited scope, it has to reduce spinning speed and therewith productivity decline, this is very big defect。

It is an object of the invention to provide a kind of solution how can avoided or reduce the defect relevant to prior art at least largely。

Summary of the invention

The present invention relates to a kind of drawing frame for ring spinner, this drawing frame has: a pair outlet roller arranged in the downstream of draw zone, and outlet roller is included output press roll and the bottom roll corresponding with this output press roll by this；It is positioned at the compacting zone in the downstream of the pair of outlet roller；And delivery pressure roller, it is characterized in that, described output press roll is arranged to, and the plane of axis orientation through described bottom roll at a right angle relative to the plane of described drawing frame, direction along described draw zone offsets backward, and described draw zone is angled downwards。

Because this favourable layout of the drawing frame according to the present invention, so delivering pressure roller upward displacement, thus causing that do not distort sliver corresponds roughly to not use the original arrangement of compactor at the spooling length delivered on pressure roller。As being described below subsequently, being in that according to the advantage of this structure of the present invention, thus, the spinning stability with compacting zone and the spinning stability without compacting zone are suitable。

Output press roll rearward displacement described above creates other, very positive effect, this is because construct the drawing frame according to the present invention with angled draw zone downwards。

Because draw zone is angled downwards, so sliver exit not in drawing frame plane but in the lower section of this plane (described plane is substantially limited by the bottom roll being positioned at output press roll upstream) draw zone for checking the upper band of drawing-off and lower band, and with the upper band of specific radian winding, until it is to depart from from upper band for trend towards the direction of the roll gap between output press roll and the bottom roll corresponding with this output press roll with tangent tangent line with upper。Because fiber is in this deflection at tangent line place so that occur significantly friction between upper band and the fiber of sliver, this friction is left sliver for the fiber preventing sliver edge and is become fly and highly effective losing。Compared with the layout of any prior art, sliver drafted in draw zone substantially more densely packed arrives the roll gap between output press roll and the bottom roll corresponding with this output press roll。In compacting zone, the compacting of sliver is now more efficient and finished yarn advantageously has less lousiness。

Accompanying drawing explanation

Now, the figure in reference to the accompanying drawings is described in detail the present invention by way of example, in the accompanying drawings:

Fig. 1 illustrates the side view of the first drawing frame of the ring spinner of the canonical form of prior art。

Fig. 2 illustrates the side view of the second drawing frame of the ring spinner with compacting zone, downstream of the prior art。

Fig. 3 illustrates the side view of the drawing frame of the ring spinner according to the present invention。

Fig. 3 a illustrates the zoomed-in view of the thin portion A of drawing frame as shown in Figure 3。

In order to simplify, it is designated with like reference numerals shown in accompanying drawing and the similar assembly of tool in the following description。

Reference numerals list

1 roll gap

2 output press rolls

3 bottom rolls

4 unclamp a little

5 deliver pressure roller

6 compactors

7 roll gaps

8 point of contacts

It is with on 9

10 times bands

11 bottom rolls

12 point of contacts

13 planes

14 draw zone planes

15 yarn guides

The thin portion of A

D compacting zone

V draw zone

Detailed description of the invention

Now, with reference to Fig. 1, it is shown that from the example of the known drawing frame for ring spinner of prior art。When have ignored the known general details that those skilled in the art are familiar with, this example has three pairs of pressure rollers, limits drawing zone plane between these pressure rollers。Specifically shown is output press roll 2 and corresponding bottom roll 3。Distribution will to its sliver FB stretched between the rolls, wherein, sliver includes band and lower band through draw zone V(this draw zone V), until roll gap 1, then winding bottom roll 3, until unclamping a little 4, being close to is that direction along the tangent line unclamping a little 4 on contact bottom roll continues to move to yarn guide 15。Described layout is constructed such that the sliver FB drafted in draw zone V roll gap 1 place between output press roll 2 and bottom roll 3 exits drawing frame, winds bottom roll 3, until unclamping a little 4, and from then on exits drawing frame as line of torsion F along the direction of yarn guide 5。

Owing to yarn guide 15 is slightly upward and moves down, the length of the sliver winding that bottom roll is drafted also changes in limited scope。

As rule of thumb learnt, sliver FB is at roll gap 1 and to unclamp the length that a little winds bottom roll between 4 for the stability of spinning process be conclusive。

With reference to Fig. 2, compacting zone D is generally set in the downstream of draw zone V to promote the intensity of yarn and to reduce its lousiness degree。Deliver pressure roller 5 and be arranged on the downstream of output press roll 2, deliver pressure roller 5 and supported by the bottom roll 3 in the region of roll gap 7。Arranging compactor 6 between roller 2 and 5, the sliver FB of draw zone V is exited in compactor 6 compacting as required。The sliver FB of compacting exits compacting zone D and winds delivery pressure roller 5 until point of contact 8 at roll gap 7 place。This substantially prolongs the spooling length between roll gap 7 and point of contact 8, by relatively situation as in Figure 1 and Figure 2, this is substantially apparent from。Therefore, the frequency of spinning stability reduction and yarn breakage increases。In order to overcome this defect, it is necessary to reduce spinning speed and the reduction accepting yield of having to。

Finally, with reference to Fig. 3, illustrate to summing-up the illustrative embodiments of the drawing frame according to the present invention, it illustrates output press roll 2 how relative at a right angle with draw zone plane 14 and axis through bottom roll 3 plane 13 rearward displacement, thus causing delivering pressure roller 5 upward displacement (difference referring to when comparing) with Fig. 2 so that deliver pressure roller 5 and be substantially adapted to length as shown in Figure 1 by the length not distorting sliver FB winding。Thus, the spinning stability of drawing frame with compacting zone is suitable with the spinning stability of the drawing frame without compacting zone, and has other very positive effect because draw zone V is angled (Fig. 3) downwards。

Draw zone V is by for checking that the upper band 9 of drawing-off and lower band 10 are determined。In thin portion A in Fig. 3 it will be apparent that and amplify in Fig. 3 a and illustrate, along the direction of the roll gap 1 between roller 2 and 3, sliver FB exits the upper band 9 below the drawing frame plane formed by bottom roll 3 and 11 and lower band 10 at point of contact 12 place。

Owing to fiber deflects at point of contact 12 place, cause that significantly friction occurs between upper band 9 and fiber, thus preventing the fiber at edge from exiting sliver and becoming microtriche and lose。Because drafted sliver substantially more densely packed reaches roll gap 1 than in device as shown in fig. 1, so that the sliver in compacting zone is by more effectively compacting, thus the less effect of lousiness bringing finished yarn。

Claims

1. for a drawing frame for ring spinner, described drawing frame has: a pair outlet roller (2,3) arranged in the downstream of draw zone (V), outlet roller is included output press roll (2) and the bottom roll (3) corresponding with this output press roll by this；It is positioned at the compacting zone (D) in the downstream of the pair of outlet roller (2,3)；And deliver pressure roller (5), it is characterized in that, described output press roll (2) is arranged to, relative at a right angle with the plane of described drawing frame (14) and through described bottom roll (3) the plane (13) of axis orientation, direction along described draw zone (V) offsets backward, and described draw zone (V) is angled downwards。