WO2021209342A1

WO2021209342A1 - Winding equipment of textile machinery

Info

Publication number: WO2021209342A1
Application number: PCT/EP2021/059320
Authority: WO
Inventors: Xiaobing Wang; Tobias MÜNSTERMANN
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2020-04-16
Filing date: 2021-04-09
Publication date: 2021-10-21
Also published as: JP2023521489A; CN113526249A; DE112021002374T5

Abstract

Present invention discloses a winding equipment of textile machinery, wherein, in order to produce bobbins of parameters as homogeneous as possible, it includes at least one winding group, wherein said winding group includes multiple winding positions (2.1-2.16), each of which is respectively provided with a driving roll (5) and a yarn entry element (9), the winding positions (2.1-2.16) are arranged in a fashion of at least three layers stacking in vertical direction and being side to side in transversal direction, wherein, lower side of the winding group is provided with multiple guiding elements (10.1-10.16) which are horizontally and transversally placed to guide yarns to the yarn entry elements (9) of the winding positions (2.1-2.16), the guiding elements (10.1-10.16) are divided into multiple guiding element groups, wherein, the amount of guiding elements (10.1-10.4) in each said guiding element group is equal to the amount of winding positions (2.1-2.4) in one vertical line, wherein, in one vertical line of the winding positions (2.1-2.4), projection points of the yarn entry elements (9.1-9.4) of each said winding position (2.1-2.4) in said vertical line projected on a connecting line of the guiding elements (10.1-10.4) of said guiding element group are all dispersedly distributed or partially overlappingly distributed between a leftmost guiding element (10.1) and a rightmost guiding element (10.4) of said guiding element group.

Description

Winding equipment of textile machinery

Technical Field

The technical field to which the present invention is related is, a winding equipment of textile machinery for the purpose of winding multiple yarns into formation.

Background Art

One prior art CN101634065 relevant to present invention has born one kind of wind ing equipment. Detailed structure of winding equipment is disclosed by the prior art to have winding positions which are placed side to side horizontally and layer-stacked vertically. Each winding position is equipped with a driving roll for driving a winding tube onto which yarns are wound, and a yarn entry element for guiding yarn into wind ing position. One row of guiding elements which are not shown is positioned below the bottom layer winding position. The guiding elements are horizontally disposed corresponding to position of the third delivery rollers.

Winding positions of one vertical line are align with one another. The horizontally placed guiding elements have equal distance with one another.

Therefore as yarn is guided from a guiding element of lower position to a yarn entry element of higher position, it is inevitable yarn be deflected, with a deflection angle formed in relative to vertical direction. The deflection angle is an important factor to influence formation of bobbin. Different deflection angle will result in different friction force to the yarn when yarn is traveling through yarn guiders and different yarn ten sion. Variations of deflection angle among yarns will indirectly cause different for mation parameters after bobbin is formed.

Nevertheless, expectation against yarn formation is, yarn formation of each winding position have a formation parameter as homogeneous as possible, in particular when one vertical line has relatively quite a few winding positions, for example, four or five, the inhomogeneity is more obvious. The existing configuration of winding equipment is unable to meet such an expectation. Contents of the Invention

For the purpose of fulfilling above-mentioned demand, present invention proposes following technical scheme:

According to first technical scheme of present invention, a winding equipment of tex tile machinery, having at least one winding group, wherein said winding group in cludes multiple winding positions, each of which is respectively provided with a driv ing roll and a yarn entry element, wherein, the yarn entry element is arranged at up stream side of the driving roll and positioned corresponding to a central section of the driving roll, the winding positions are arranged in a fashion of at least three layers stacking in vertical direction and being side to side in transversal direction, wherein, lower side of the winding group is provided with multiple guiding elements which are horizontally and transversally placed to guide yarns to the yarn entry elements of the winding positions, the guiding elements are divided into multiple guiding element groups, wherein, the amount of guiding elements in each said guiding element group is equal to the amount of winding positions in one vertical line, wherein, in one vertical line of the winding positions, projection points of the yarn entry elements of each said winding position in said vertical line projected on a connecting line of the guiding el ements of said guiding element group are all dispersedly distributed or partially over- lappingly distributed between a leftmost guiding element and a rightmost guiding element of said guiding element group.

Difference to technical schemes in prior art is, not all winding positions of one vertical line are in aligned arrangement. Adjacent winding positions are in staggered arrange ment. The staggered manner includes two possibilities. One possibility is that all wind ing positions of one vertical line are in staggered arrangement. Another possibility is that part of the winding positions of one vertical line are in staggered arrangement, part of the winding positions of one vertical line are in aligned arrangement. The pro posed staggered arrangement enables that, distance from projection points of at least part of the yarn entry elements onto the connecting line to corresponding guiding el ements is reduced. Therefore, deflection angle of yarn when traveling from the guiding element to the yarn entry element is correspondingly reduced. The technical effect that the technical scheme brings is, while at least part of the yarns have their deflection angle reduced, deflection angles of all yarns can be homogenized as much as possi- ble, so that bobbin formation of all winding positions can have parameters as homo geneous as possible.

As a technical scheme for optimizing space utilization, the second technical scheme of present invention states that, in one vertical line of the winding positions the winding positions are arranged with an offset to the right or to the left one below the other.

As a technical scheme for optimizing space utilization, the second technical scheme of present invention states that, the winding positions of the multiple winding group are arranged in a frame, wherein the horizontal layers of the winding positions are stacked with an offset to right frame end or to a left frame end.

If provided that the winding equipment has four stacking layers, as the fourth technical scheme of present invention, in one vertical line of winding positions, aligned top layer winding position and second layer winding position higher than bottom layer winding position are in offset arrangement in relative to the aligned bottom layer winding posi tion and third layer winding position only lower than the top layer winding position, wherein, in one said guiding element group, the left two guiding elements respectively guide the yarn to the yarn entry elements of the two winding positions which are in offset arrangement to the left in a non-interferential manner, the right two guiding ele ments respectively guide the yarn to the yarn entry elements of the two winding posi tions which are in offset arrangement to the right in a non-interferential manner. Such an arrangement enables that, a optimal balance is found between manufacturing cost and homogeneity of deflection angle.

As the fifth technical scheme of present invention, the winding position includes a traverse guide device which guides the yarn along axial direction of the driving roll of the winding position, where, the area covered by trajectory of yarn movement between the yarn entry element and the driving roll is an isosceles triangle. The yarn is driven to reciprocate along axial direction of the driving roll after traveling through the yarn en try element. As the sixth technical scheme of present invention, the guiding elements of one of the guiding element groups corresponding to one vertical line of winding positions are equally distanced.

In order to further optimize corresponding relations between the guiding element and the yarn entry element, as the seventh technical scheme of present invention, the left most guiding element and rightmost guiding element respectively guide the yarn to the yarn entry element of the top layer winding position and the yarn entry element of the third layer winding position.

In order to reduce the influence of deflection angle on bobbin formation as much as possible, the deflection angle needs to be controlled under certain value. As the eighth technical scheme of present invention, yarn deflection angles for guiding the yarns from the guiding element group to the yarn entry elements in one vertical line of wind ing positions are less than 10°.

Description of Figures

Figure 1 schematically shows top view diagram of one said winding position. Figure 2 is structural schematic diagram of the winding equipment having one winding group according to present invention;

Figure 3 schematically shows positional relation of projection points of one verti cal line of yarn entry elements onto a connecting line which connects the guiding ele ments according to prior art;

Figure 4 schematically shows positional relation of projection points of one verti cal line of yarn entry elements onto a connecting line which connects the guiding ele ments according to the embodiment in figure 2;

Figure 5 is structural schematic diagram of another embodiment of the winding equipment having one winding group according to present invention;

Figure 6 schematically shows positional relation of projection points of one verti cal line of yarn entry elements onto a connecting line which connects the guiding ele ments according to the embodiment in figure 5.

Modes to Carry Out the Invention Winding equipment of textile machinery is an equipment singularly constituted by one winding group or jointly constituted by placing plural winding groups side by side. Each said winding group is further comprised of plural winding positions in an orderly combined manner, through which plural yarns are wound into formation. Prior to enter ing the winding equipment, yarn needs to undergo necessary yarn treatments via cor responding process treatment positions, i.e. heating, cooling, drawing etc. Dependent on different machine types, the way how the process treatment positions are arranged differs.

Configuration of the winding position are exemplified in figure 1, which schematically presents a top view of the winding position. As an effect of the top view, a driving roll 5 that is underneath a bobbin 4 is shown by dotted lines. The bobbin 4 presses on the driving roll 5 as being parallel with the driving roll 5. With aid of a swivel arm 3 the bobbin 4 is able to approach or pull away with the driving roll 5.

The winding position also includes a yarn entry element 9 for guiding yarn 8 into the winding position. The yarn entry element 9 is mounted as being corresponding to the central section of the driving roll 5. After passing the yarn entry element 9, the yarn 8 arrives at a traverse yarn guide 6 then is finally wound onto the bobbin 4. The traverse yarn guide 6 is driven by a traverse mechanism that is not present in figure 1 to recip rocate along axial direction of the driving roll 5. By means of restriction jointly enforced by the fixed yarn entry element 9 and the moving traverse yarn guide 6, the area cov ered by movement trajectory of the yarn 8 between the said two is an isosceles triangle 7.

Following is an introduction of configuration of one said winding group. Figure 2 is a structural schematic diagram of the winding equipment which has one winding group. If perspective view of figure 1 is defined as vertical perspective view, then perspective of figure 2 is horizontal perspective view. The winding group includes 16 winding posi tions 2.1-2.16, vertically being layer-stacked for four layers, wherein, each layer has four adjacent winding positions that are equally spaced. Each said winding position has the same structure as shown in figure 1. It is worth noting that, amount of winding positions and amount of layers are only for illustrative purpose, where the amount of winding positions could be 12 or the amount of stacking layers could be three. The winding positions 2.1-2.16 are housed within a frame 1. The winding group has four guiding element groups horizontally disposed, each group comprising four guid ing elements, which leads to 16 said guiding elements 10.1-10.16 in total. The amount hereby is only for illustrative purpose and space between adjacent said guiding ele ments within each said guiding element group is equal. In this embodiment, the cause for setting the amount of the guiding elements in one guiding element group as four is, one-to-one correspondence needs to be established between the guiding element of the guiding element group and the yarn entry element within one vertical line. An ex ample is, the yarn is guided from one among the four guiding elements 10.1-10.4 to one among the four yarn entry elements 9.1-9.4. Guidance of the yarn has to follow one basic principle, which is, to ensure interference-free among yarns.

One yarn, after being treated by process treatment positions prior to the winding equipment, enters into one of the guiding elements 10.1-10.4 and then is guided up wardly to one of the yarn entry elements 9.1-9.4. Yarn winding formation step is the final phase, where bobbin is formed.

In order to better elaborate outstanding characteristics of present invention, descrip tions by making the winding positions 2.1, 2.5, 2.9, 2.13 of one vertical line as an ex ample are made. In up to down order, the four layers are respectively defined as, top layer, third layer, second layer and bottom layer. The four winding positions 2.1, 2.5,

2.9, 2.13 are orderly disposed in a zigzag fashion in relative to vertical direction. Specif ically, the top layer winding position 2.1 and the third layer winding position 2.5 which are adjacent to each other have an offset to each other in left-right direction. The third layer winding position 2.5 and the second layer winding position 2.9 which are adja cent to each other have an offset to each other in left-right direction. The second layer winding position 2.9 and the bottom layer winding position 2.13 which are adjacent to each other have an offset to each other in left-right direction. Additionally, the top layer winding position 2.1 is aligned with the second layer winding position 2.9, the third layer winding position 2.5 is aligned with the bottom layer winding position 2.13. Con sequently, each offset value of adjacent winding positions in one vertical line is equal, which is advantageous to design, manufacturing and installation phase. Further to what has been described, spindle space between each adjacent winding positions within one layer is the same, while the spindle space in different layers is also the same. In the frame 1 accommodating the winding positions 2.1-2.16, all said wind ing positions 2.1, 2.2, 2.3, 2.4 in the top layer are offset towards the left frame 1 end, all said winding positions 2.5, 2.6, 2.7, 2.8 in the third layer are offset towards the right frame 1 end, all said winding positions 2.9, 2.10, 2.11. 2.12 in the second layer are off set towards the left frame 1 and, all said winding positions 2.13, 2.14, 2.15, 2.16 in the bottom layer are offset towards the right frame 1 end. In the same way, each offset val ue between adjacent layers is equal.

One yarn needs to be guided from one said guiding element to one said yarn entry element which has corresponding relation to the guiding element. The corresponding relation is set up by following means: by taking one vertical line of the winding posi tions 2.1, 2.5, 2.9, 2.13 as an illustrative example, in the guiding element group having the guiding elements 10.1, 10.2, 10.3, 10.4, the guiding elements 10.1, 10.2 at the left side respectively guide one yarn to the yarn entry elements 9.1, 9.3 of the winding po sitions 2.1, 2.9 which are in leftward offset arrangement within said one vertical line of winding positions. The guiding elements 10.3, 10.4 at the right side respectively guide one yarn to the yarn entry elements 9.2, 9.4 of the winding positions 2.5, 2.13 which are in rightward offset arrangement within said one vertical line of winding positions. Particularly, the guiding elements 10.1, 10.4 at the twoends within the guiding ele ment group respectively guide one yarn to the yarn entry element 9.1 of the top layer winding position 2.1 and the yarn entry element 9.2 of the third layer winding position 2.5. The reason for designing such a yarn path will be elaborated in following contents by incorporating figure 3 and figure 4.

Figure 3 schematically shows positional relation of projection points of one vertical line of yarn entry elements onto a connecting line which connects the guiding elements according to prior art; figure 4 schematically shows positional relation of projection points of one vertical line of yarn entry elements onto a connecting line which con nects the guiding elements according to the embodiment in figure 2. Yarn deflects as a result of being guided from the guiding element 10.1 to the corresponding yarn entry element 9.1, with a deflection angle A in figure 3 as the angle formed in relative to ver tical line. The deflection angle A is a factor influencing friction force that imposes on the yarn when traveling through yarn guider and yarn tension, which, in the end, influ ences formation of bobbin. In order to produce bobbins as homogeneous as possible, it is desired that the difference of friction force and yarn tension from yarn to yarn is reduced as much as possible. To reach such an aim, it is further desired to reduce val ue of the deflection angle A and to enable that difference of deflection angle A from yarn to yarn is as small as possible.

Being obtainable from figure 3, the guiding elements 9.1, 9.2, 9.3, 9.4 in one vertical line are aligned with one another according to prior art. Reference sign 11 is a connect ing line which travels through all said guiding elements. Reference signs 10.1', 10.2', 10.3', 10.4' on the connecting line 11 respectively indicates positions of the guiding elements 10.1 , 10.2, 10.3, 10.4 on the connecting line 11. Projection points of the aligned yarn entry elements 9.1, 9.2, 9.3, 9.4 onto the connecting line 11 overlaps as reference sign 9'. Therefore value of the deflection angle A is decided by distance from reference sign 10.T to reference sign 9' and distance from reference sign 9' to the yarn entry element 9.1. Distance between reference sign 9' and reference sign 10.2' is indi cated as a, distance between reference sign 9' and 10.3' is indicated as b, distance between reference sign 9' and 10.4' is indicated as c, distance between reference sign 9' and 10.1' is indicated as d. As can be perceived, difference among a, b, c, d is rela tively big.

Figure 4 is applied for direct comparison with figure 3. Figure 4 shows positional rela tion among projection points under embodiment in figure 2. According to figure 4, the yarn entry element 9.1 of top layer is aligned with the yarn entry element 9.3 of second layer, both being projected on the connecting line 11 with a overlapped projection point indicated as reference sign 12. The yarn entry element 9.2 of third layer is aligned with the yarn entry element 9.4 of bottom layer, both being projected on the connect ing line 11 with a overlapped projection point indicated as reference sign 13. The top layer yarn entry element 9.1 is in left-right offset arrangement in relative to the third layer yarn entry element 9.2. The second layer yarn entry element 9.3 is in left-right offset arrangement in relative to the bottom layer yarn entry element 9.4. Distance be tween reference sign 12 and reference sign 10.2' is indicated as e, distance between reference sign 13 and reference sign 10.3' is indicated as f, distance between refer- ence sign 13 and reference sign 10.4' is indicated as g, distance between reference sign 12 and reference sign 10.1' is indicated as h.

In each of embodiment in figure 3 and figure 4, distance from each of the guiding ele ments 9.1, 9.2, 9.3, 9.4 to corresponding projection point onto the connecting line re mains unchanged. Therefore, the shorter the distance from the guiding element to the projection point of corresponding yarn entry element onto the connecting line is, the smaller the deflection angle A is.

It is obtainable, after comparing figure 3 which showcases prior art features and figure 4 which showcases present invention features, that the configuration of winding equipment in present invention is able to shorten value difference among e, f, g, h compared with value difference among a, b, c, d. In addition, value of reference sign h is reduced compared with reference sign d, value of reference sign e is reduced com pared with reference sign c. The resultant technical effect is, in one vertical line of winding positions, deflection angle of each yarn is as homogeneous as possible, and the initially relative big deflection angle is reduced to smaller deflection angle.

Figure 5 is structural schematic diagram of another embodiment of the winding equipment having one winding group according to present invention. Difference be tween embodiment of figure 4 and embodiment of figure 5 lies in that, four said yarn entry elements 9.1-9.4 in one vertical line of the winding positions are in zigzag ar rangement without any being aligned, therefore there are no overlapped projection points on the connecting line 11.

Figure 6 schematically shows positional relation of projection points of one vertical line of yarn entry elements onto a connecting line which connects the guiding elements according to the embodiment in figure 5. Projection point of the yarn entry element 9.1 onto the connecting line 11 is indicated as reference sign 9.1', projection point of the yarn entry element 9.2 onto the connecting line 11 is indicated as reference sign 9.2', projection point of the yarn entry element 9.3 onto the connecting line 11 is indicated as reference sign 9.3', projection point of the yarn entry element 9.4 onto the connect ing line 11 is indicated as reference sign 9.4'. Distance between reference sign 9.3' and reference sign 10.2' is indicated as i, distance between reference sign 9.4' and refer- ence sign 10.3' is indicated as j, distance between reference sign 9.2' and reference sign 10.4' is indicated as k, distance between reference sign 9.1' and reference sign 10.1' is indicated as l. By comparing with the embodiment in figure 4, value difference among i, j, k, l is further reduced in relative to the value difference among e, f, g, h. Con sequently value difference of the deflection angle A from yarn to yarn is further re duced.

The outstanding features of present invention are respectively unfolded in figures 2, 4 and figures 5,6. The embodiment in figures 2 and 4 exemplifies that , in one vertical line of the winding positions, projection points of the yarn entry elements of each said winding position in one vertical line projected on a connecting line of the guiding ele ments of said guiding element group are partially overlappingly distributed between a leftmost guiding element and a rightmost guiding element of said guiding element group. The embodiment in figures 5 and 6 exemplifies that, in one vertical line of the winding positions, projection points of the yarn entry elements of each said winding position in one vertical line projected on a connecting line of the guiding elements of said guiding element group are all dispersedly distributed between a leftmost guiding element and a rightmost guiding element of said guiding element group. What is achieved is, all formed bobbin have more homogeneous parameters.

The amount of winding groups are chosen only for illustrative purpose, which could be ten or twelve according to different textile machine specifications. In order to mitigate the influence deflection angle has on bobbin formation as much as possible, the de flection angle needs to be controlled below a certain value, preferably below 10°.

Claims

1. A winding equipment of textile machinery, having at least one winding group, wherein said winding group includes multiple winding positions, each of which is respectively provided with a driving roll and a yarn entry element, wherein, the yarn entry element is arranged at upstream side of the driving roll and positioned corre sponding to a central section of the driving roll, the winding positions are arranged in a fashion of at least three layers stacking in vertical direction and being side to side in transversal direction, wherein, lower side of the winding group is provided with multiple guiding elements which are horizontally and transversally placed to guide yarns to the yarn entry elements of the winding positions, the guiding ele ments are divided into multiple guiding element groups, wherein, the amount of guiding elements in each said guiding element group is equal to the amount of winding positions in one vertical line, characterized in that, in one vertical line of the winding positions, projection points of the yarn entry ele ments of each said winding position in said vertical line projected on a connecting line of the guiding elements of said guiding element group are all dispersedly dis tributed or partially overlappingly distributed between a leftmost guiding element and a rightmost guiding element of said guiding element group.

2. The winding equipment of claim 1, characterized in that, in one vertical line of the winding positions the winding positions are arranged with an offset to the right or to the left one below the other.

3. The winding equipment of claim 1 or claim 2, characterized in that, the winding positions of the multiple winding group are arranged in a frame, wherein the hori zontal layers of the winding positions are stacked with an offset to right frame end or to a left frame end.

4. The winding equipment of claim 3, characterized in that, the winding positions are arranged to be stacked in vertical four layers, in one vertical line of winding po sitions, aligned top layer winding position and second layer winding position high er than bottom layer winding position are in offset arrangement in relative to the aligned bottom layer winding position and third layer winding position only lower than the top layer winding position, wherein, in one said guiding element group, the left two guiding elements respectively guide the yarn to the yarn entry ele ments of the two winding positions which are in offset arrangement to the left in a non-interferential manner, the right two guiding elements respectively guide the yarn to the yarn entry elements of the two winding positions which are in offset ar rangement to the right in a non-interferential manner.

5. The winding equipment of claim 1, characterized in that, the winding position includes a traverse guide device which guides the yarn along axial direction of the driving roll of the winding position, where, the area covered by trajectory of yarn movement between the yarn entry element and the driving roll is an isosceles tri angle.

6. The winding equipment of either one from claim 1 to claim 5, characterized in that, the guiding elements of one of the guiding element groups corresponding to one vertical line of winding positions are equally distanced.

7. The winding equipment of claim 4, characterized in that, the leftmost guiding element and rightmost guiding element respectively guide the yarn to the yarn en try element of the top layer winding position and the yarn entry element of the third layer winding position.

8. The winding equipment of claim 7, characterized in that, yarn deflection angles for guiding the yarns from the guiding element group to the yarn entry elements in one vertical line of winding positions are less than 10°.