JPH08209468A - Silver-supplying apparatus in drawframe - Google Patents

Abstract

PURPOSE: To provide a sliver-supplying apparatus in a drawframe provided with a silver-collecting means capable of making thickness of slivers uniform even in the case of narrower sliver binding than in a conventional apparatus. CONSTITUTION: This sliver-supplying apparatus is composed of a supporting member 21, a pair of circular rods 23 as width controlling members and a pushing-up bar 25 and a pushing-down bar 24 which are closely placed to each other in a back and force direction having the circular rods 23 between them. The supporting member 21 is integrally fixed on a supporting bracket 12 attached on a slide block 9 supporting a back roller 6. The circular rods 23 are laterally stood on a horizontal base board 21a of the supporting member 21. Slivers are pushed up by the pushing-up bar 25 and pushed down by the pushing-down bar 24. Plural slivers S are collected to form a sliver S1 between the circular rods 23 in a state applied with a tension so that the neighboring slivers do not slip against each other in a vertical direction even in the case that plural slivers are collected in a narrow range between the bars 24 and 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliver supply device for a drafting machine, and more specifically, for converging a plurality of slivers from a feed can of a drafting creel into a sliver bundle upstream of a draft part, The present invention relates to a sliver supply device equipped with a sliver converging means for feeding to a back roller.

[0002]

2. Description of the Related Art Conventionally, as a sliver supply device for a drawing machine having such a converging means, as shown in FIG. 6, plural sliver supply devices are supplied from a feed can 40 of a drawing creel 50 through a creel roller 36. The sliver S is provided between the upper feed roller 34 and the back roller 6 through a curve guide (see Japanese Utility Model Publication No. 59-40456) 35 whose center is recessed downward, as shown in FIG. There is a U-shaped converging unit 120 that converges adjacent sliver S into a sliver bundle S1 in a state where they are in contact with each other or are close to each other so as to be slightly pressed and fed to the back roller 6. Then, the drafted sliver bundle is further focused by the gatherer 41 and housed in the can 44 via the trumpet 42 and the coiler device 43. The focusing means 120 may have left and right side walls whose positions can be adjusted in the width direction of the sliver.

[0003]

In the conventional sliver feeding device, the width of the sliver bundle S1 is relatively small as described above. Therefore, the portion P1 where the sliver S contacts
And the diameter portion P2 of the sliver S are significantly different in thickness in the vertical direction (FIG. 7). Since the sliver bundle S1 having such uneven thickness is drafted in the draft part, there is a problem that draft unevenness is likely to occur in the width direction and the quality of the finished sliver cannot be improved. Therefore, it is conceivable that the adjacent slivers S are further closely contacted with each other so that the adjacent slivers S have a cross-sectional shape close to a rectangle so that the thickness unevenness in the sliver bundle S1 is as uniform as possible. Therefore, if the focusing width by the above-mentioned U-shaped focusing means is made narrower than the conventional one, the rotation of the creel roller 36 closest to the draft part is made slightly smaller than the rotation of the back roller 6, and it is focused by the sliver focusing means. Although a slight tension is applied to each sliver when moving, the distance between the upper feed roller 34 and the back roller 6 is 300 to 500 mm.
In a state in which tension is applied to a certain extent, the sliver can move relatively freely in the vertical direction in the above-mentioned U-shaped focusing means, so that adjacent slivers are pushed in the width direction and moved in the vertical direction. The plurality of slivers do not line up side by side in an orderly manner, and they protrude to the top and bottom as shown in FIG. 8, again, the thickness is not uniform and draft unevenness cannot be prevented. An object of the present invention is to provide a sliver supply device having a sliver converging means capable of increasing the degree of adhesion of a plurality of slivers and supplying the sliver bundle to the draft part as a sliver bundle having a substantially uniform thickness.

[0004]

In order to solve the above-mentioned problems, in claim 1, a sliver converging means for converging a plurality of slivers from a plurality of feed cans arranged on a drawing creel in a widthwise direction is backed up. In the sliver supply device in the kneader provided near the rear of the roller, the width regulating member that regulates the width of the plurality of slivers, the pushing-down member that pushes down the sliver, and the pushing-up member that pushes up the sliver flow upwards. The sliver converging means are arranged close to each other in the direction.
According to a second aspect of the present invention, two sets of sliver focusing means are arranged in parallel in the sliver flow direction. According to a third aspect of the present invention, the sliver focusing means is integrally connected to a slide block that supports the back roller, and the sliver focusing means is provided together with the back roller so as to be positionally adjustable in the sliver flow direction. According to a fourth aspect of the present invention, the push-down member is located at the rear position of the width regulating member, and the push-up member is disposed between the push-down member and the back roller. According to a fifth aspect of the present invention, at least one of the push-down member and the push-up member is provided so that the vertical position can be adjusted.

[0005]

According to the first aspect of the present invention, the sliver is pushed up and down by the push-up member and the push-down member and pushed up to squeeze the sliver, and tension is applied to the sliver by these members so as to regulate the degree of freedom of the sliver in the vertical direction. In this state, the width regulating members bring the widths of the plurality of slivers closer to each other and converge them into a sliver bundle. This allows the sliver to
Even if the sliver is narrower than the conventional one, the sliver bundle does not protrude upward and downward, the adhering degree of the adjacent slivers can be increased, and the sliver bundle has a uniform thickness. According to the second aspect, since there are two sets of sliver converging devices, the degree of freedom in the vertical direction of the sliver can be further regulated as compared with the case where only one sliver converging device is provided. In the third aspect, when the gauge of the draft roller is adjusted, the sliver focusing means is moved while maintaining the distance from the back roller. Therefore, even if the gauge is changed, it is necessary to adjust the tension applied to the sliver by the sliver focusing means. There is no. In claim 4, the sliver is given a tension at a short distance before the width regulating member, and is squeezed in that state, so that the tension is applied to the sliver more than when the pushing-up member and the pushing-down member are not adjacent to each other. The sliver bundle can be immediately supplied to the back roller immediately after the width adjustment, and the width does not change after the width adjustment. According to the fifth aspect, the tension applied to the sliver by the push-up member and the push-down member can be changed, and the optimum tension required for eliminating the protrusion of the sliver can be applied to the sliver.

[0006]

1 and 2, on a roller stand 2 of a kneading machine 1, a front roller 4, a second roller 5 and a back roller 6 are arranged upstream from a front side in a spinning direction and upstream in a sliver flow direction (front-back direction). And the bottom rollers 4a, 5a, 6a and the top rollers 4b, 5b, 6b of the rollers 4, 5, 6 are the roller stand 2
The corresponding slide blocks 7, 8 and 9 provided above are rotatably supported. The slide block 7 is integrally fixed on the roller stand 2, and the other two are adjustable in position in the front-rear direction by a fixing bolt 11 inserted in an elongated hole 10 provided in the roller stand 2 in the sliver flow direction. By adjusting the positions of the second and back rollers 5 and 6 with respect to the front roller 4, the gauge between the rollers 4 and 5 and between the rollers 5 and 6 can be changed according to the fiber length of the spun fiber. . Horizontal mounting portions 12a at both left and right ends (both ends in the width direction) of the support bracket 12 are mounted on the left and right slide blocks 9 of the back roller 6 and fixed by bolts 13. A central portion in the width direction of the support bracket 12 is formed as a connection support portion 12b that is bent rearward at a right angle.

The sliver focusing means 20 comprises a horizontal substrate 21.
A pair of left and right round bars 23 as width regulating members, which are vertically installed on a substrate 21a of a supporting member 21 having a vertical wall 21b whose one end in the width direction of a is bent upward, and the round bar 23 are sandwiched between them. A push-down bar (push-down member) 24, which is disposed near the front and rear of the sliver flow direction and is cantilevered above the substrate 21a by a length reaching the round bar 23 on the far side from the vertical wall 21b, and a push-up bar (push-up member). ) 25 and. Round bar 23 and back roller 6
As shown in FIG. 3, the push-up bar 25 disposed between the sliver guide surfaces has a curved surface in which the center is recessed downward, and one end of the sliver guide surface has a vertical elongated hole 21c formed in the vertical wall 21b. Through the mounting bolts 26, the vertical position can be adjusted. By forming the push-up bar 25 into a concavely curved surface in this manner, it is possible to prevent the sliver bundle S1 width-shifted by the round bar 23 from spreading in the width direction while it is conveyed to the back roller 6. On the other hand, the push-down bar 24 arranged close to the rear of the round bar 23 has a straight sliver guide surface, and one end of the push-down bar 24 is
Like the push-up bar 25, the vertical wall 21b is provided with a long hole 21c so that the vertical position thereof can be adjusted. Also for the push-down bar 24, the sliver guide surface may be formed in a curved shape in which the center is recessed upward. Further, the round bar 23 is fastened and fixed together with the connection support portion 12b by a bolt 22 at a position eccentric from the axial center thereof,
Therefore, by loosening the bolt 22 and rotating the round bar 23 eccentrically, the interval between the pair of round bars 23, that is, the convergence width of the plurality of slivers S can be changed.

The rear end of the substrate 21a is movably overlapped with the front end of an L-shaped table 31 fixed to a fixed machine frame 30 in the front-rear direction. The table 31 is fastened to the machine frame 30 with bolts 33 together with a pair of left and right guide members 32 that guide the sliver. The guide member 32 moves the sliver S closer to each other before focusing the plurality of sliver S between the round bars 23. An upper feed roller 34 that is positively rotated is provided behind the guide member 32. Behind the upper feed roller 34, as in the push-up bar 25, a curve guide 35 having a recessed center in the width direction (described in Japanese Utility Model Publication No. 59-40456).
Is provided. Reference numeral 36 denotes a creel roller that draws out the sliver S from a plurality of feed cans 40 (here, eight) arranged on the drafting creel 50, and is closest to the drafting machine base. The rotation of the creel roller 36 is set to be slightly smaller than the rotation of the back roller 6. Then, the sliver S passes through the upper surface of the creel roller 36, the upper surface of the curve guide 35 with a depressed center, and the lower side of the upper feed roller 34, and then the guide member 3
The width of the push-down bar 24 is rounded between the two, the round bar 23
During this period, it is guided to the draft part through the upper surface of the push-up bar 24.

Prior to spinning, the interval between the round bars 23 is set to a sliver width (narrower than in the prior art) suitable for deforming and closely contacting the sliver S with a substantially rectangular cross section. Also, adjust the vertical position of the push-up bar 25, the push-down bar 24,
When a plurality of slivers S are bundled into a sliver bundle S1 having a sliver width set by the round bar 23, the sliver S is set to generate a minimum necessary tension in which the sliver S is restricted from moving vertically. . Then, spinning is performed.
Multiples from multiple feed cans 40 (here 8
The sliver S of (book) passes through the creel roller 36 closest to the draft part, and is brought close to the center portion in the width direction by the recessed upper surface of the guide member 35. The creel roller 3
Since the rotation of 6 is slightly slower than the rotation of the back roller 6, a slight tension is applied to the sliver S between the creel roller 36 and the back roller 6, so that the sliver S
Is smoothly sent forward by the frictional force with the upper feed roller 34 which is positively rotated. Then, the sliver S is width-shifted by the guide member 32 to a state close to the proper width to form the sliver bundle Sa. Sliver bundle S at this point
In the state of a, since the distance between the upper feed roller 34 and the push-down bar 24 is relatively long due to the positional relationship with the draft part, even if the sliver S is tensioned as described above, The sliver S easily escapes in the vertical direction and is likely to be uneven in the thickness direction. Further, the converged sliver bundle Sa spreads again by a small amount before reaching the draft part. Therefore, in the present application, subsequently, the round bar 2 is formed by the push-down bar 24 and the push-up bar 25.
3, the tension is applied to the sliver S at a short distance by sandwiching the sliver S, and the sliver S is squeezed into a sliver bundle S1 having a proper width again by the round bar 23. It loses the freedom to move vertically when it is focused just before the roller. Therefore, even if the sliver S is moved closer to a narrower width than the conventional one, and the close contact degree of the adjacent sliver S is increased, the sliver S does not protrude upward and downward, and each sliver S has a cross section as shown in FIG. Of the sliver bundle S1 are deformed and closely contacted to each other in a shape close to a substantially rectangular shape, and are aligned with a substantially uniform thickness in the width direction.
In this state, it is immediately sent to the back roller 6.

Thus, it has a substantially uniform thickness and
The sliver bundle S1 in which the adjacent slivers S are converged without protruding in the vertical direction is sent to the back roller 6, drafted, and accommodated in a can by a coiler device (not shown). The sliver bundle focused by the round bar 23 is
As described above, since the variation in the thickness direction is small and the material is fed into the draft part with a substantially uniform thickness, the occurrence of draft unevenness can be suppressed, and a high quality kneading sliver can be spun.

When the gauge of the draft part is changed depending on the type of fiber, the fixing bolts 11 are loosened to change the positions of the back roller 6 and the second roller 5 in the front-rear direction. Since the sliver focusing means 20 is integrally connected to the slide block 9 via the support bracket 12, even if the position of the back roller 6 is adjusted, the initially set up and down positions of the push-up bar 25 and the push-down bar 24, And sliver focusing means 2
The distance 6 between 0 and the back roller does not change, and it is not necessary to adjust tension applied to the sliver S by the sliver focusing means 20 again.

Next, referring to FIG. 4, the sliver focusing means 20.
A case will be described in which two sets are provided behind the back roller 6. The sliver converging means 20 is exactly the same as that of the above-mentioned embodiment, and the same parts are designated by the same reference numerals and detailed description thereof will be omitted. These two sets of sliver focusing means 20 are provided on a support bracket 12 integrally fixed to the slide block 9, and one of them is arranged close to the back roller 6. The rear end of the support member 21 attached to the support bracket 12 is movably mounted on the front end of a table 31 that is integral with the machine frame 30. By providing the two sets of sliver focusing means 20 in this manner, the degree of freedom in the vertical direction of the sliver S can be further regulated by the effect of applying tension to the sliver S, and the sliver S can be focused in a narrower width. Further, even when the gauge is adjusted, the positions of the two sets of sliver focusing means 20 in the front-rear direction and the positional relationship with the back roller 6 do not collapse, so that the tension state initially set is maintained as it is. There is no need to readjust the tension applied state to the sliver by the sliver focusing means 20. When the gauge in the draft part is changed and the sliver focusing means at the rear of FIG. 4 and the upper feed roller 34 are too close to each other,
The rear sliver converging means may be supported by another support bracket so that the position can be adjusted in the front-rear direction separately from the front sliver converging means.

Next, another example of the sliver focusing means will be described. The sliver focusing means of this other example is applied to both the embodiment of FIG. 1 and the embodiment of FIG. As shown in FIG.
In this example, the swing arm 41 is swingably supported by a pair of width regulating members 23A in the width direction and can be fixed at a desired swing position, and the push-down bar 24 is attached to the tip of the swing arm 41.
Attached, and close to the rear of the width regulating member 23A,
The push-up bar 25 is fixed. In this embodiment, as in the embodiment of FIG. 1, the push-up bar 25 and the push-down bar 24 are located closer to each other as compared with the case where the width regulating member is sandwiched and the push-down member and the push-up member are provided. Since the sliver S can be provided with a tension and the tension can be applied to the sliver S, the vertical movement of the sliver S can be regulated more effectively.
Since the width regulating member 23A moves the width immediately before the back roller 6, the sliver S does not protrude vertically when the width regulating member 23A moves the width, and the sliver bundle S1 having a uniform thickness is immediately transferred to the back roller. The width of the sliver bundle S1 that has been sent to the nozzle 6 and passed through the width regulating member 23A does not expand. In this embodiment, the tension applied to the sliver S can be changed depending on the swing position of the swing arm 41.

Other embodiments which can be grasped from the embodiments of the present application will be listed below. (1) A push-down bar as a push-down member is arranged behind the width-regulating member, and a push-up bar as a push-up member is arranged between the width-regulating member and the back roller. The push-up bar has a shape in which the center in the width direction is depressed downward. The sliver supply device in the drawing machine according to claim 1, wherein (Effect) The sliver bundle whose width is regulated by the width regulating member
It is possible to prevent the sliver bundle from spreading before reaching the back roller. (2) The width regulating member is a pair of round bars erected on both sides in the width direction of the sliver bundle, and each round bar is fixed so as to be rotatable about an eccentric axis line that is eccentric from its axis. The sliver supply device in the drawing machine according to any one of claims 1 to 5. (Effect) The regulation width of the sliver can be adjusted.

[0015]

As described above, according to the present invention, the width regulating member performs the width adjustment in the vicinity of the back roller while the tension is positively applied to the sliver by the pressing-down member and the pushing-up member that are arranged close to each other. , When a plurality of sliver is converged by the width regulating member, the sliver does not move freely in the up and down direction, and the adhesiveness of the adjacent slivers is increased as compared with the conventional one, and the sliver bundle is immediately formed in the draft part as a sliver bundle having a uniform thickness. It is possible to feed the sliver, prevent draft unevenness from occurring, and obtain a sliver with a high quality after drawing. Further, in the case of having two sets of sliver converging means, the effect of converging with uniform thickness can be further enhanced. Further, in the case where the sliver focusing means is integrated with the slide block of the back roller, the tension state of the sliver focusing means is kept in the initially set state, and the tension of the sliver focusing means is changed even if the gauge is changed in the draft part. There is no need to adjust the application state. Further, in the case where the pushing-down member and the pushing-up member are arranged behind the width-regulating member, the distance between the pushing-up member and the pushing-down member is larger than that in the case where the pushing-up member and the pushing-down member are arranged in front of and behind the width-limiting member. Is shorter, tension can be applied at this slight distance, the upper and lower degrees of freedom of the sliver can be regulated more reliably, and the thickness of the sliver bundle when it is focused can be made uniform. In addition, if either the push-down member or the push-up member can be vertically adjusted, it is easy to adjust to the optimum tension state that can prevent the sliver from protruding vertically depending on the sliver type. Therefore, it is possible to prevent excessive draft from being applied to cause false draft.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a sliver supply device including a sliver converging means of the present application.

FIG. 2 is an enlarged plan view of FIG.

3 is an enlarged cross-sectional view taken along the line III-III of FIG.

FIG. 4 is a vertical cross-sectional view of a sliver supply device including two sets of sliver focusing means.

FIG. 5 is another example of the sliver focusing means.

FIG. 6 is a view showing a conventional sliver supply device.

7 is an enlarged cross-sectional view taken along line VII-VII of FIG.

FIG. 8 is a diagram showing a problem in the conventional sliver focusing means.

[Explanation of symbols]

1 drawing machine, 6 back roller, 9 slide block, 12 support bracket, 20 sliver converging means, 23 round bar (width regulating member), 24 push-down bar (push-down member), 25 push-up bar (push-up member), S sliver, S1 sliver bundle

Claims (5)

[Claims] 1. A sliver supply device in a kneading machine, comprising a sliver converging means for converging and converging a plurality of slivers from a plurality of feed cans arranged on a kneading creel at a position near a back roller rear side. The sliver focusing means is configured by arranging a width regulating member that regulates the width of the sliver of the book, a pushing-down member that pushes the sliver downward, and a pushing-up member that pushes the sliver upward in the sliver flow direction. Sliver supply device in the drawing machine. 2. The sliver supply device for a drawing machine according to claim 1, wherein two sets of the sliver converging means are arranged side by side in the sliver flow direction. 3. The kneading machine according to claim 1, wherein the sliver focusing means is integrally connected to a slide block for supporting the back roller, and the sliver focusing means is provided together with the back roller so as to be positionally adjustable in the sliver flow direction. Sliver supply device in the strip machine. 4. The pushing-down member is located at a rear position of the width regulating member, and the pushing-up member is arranged between the pushing-down member and the back roller. Sliver feeding device in the drawing machine of. 5. The sliver supply device for a kneading machine according to claim 1, wherein at least one of the push-down member and the push-up member is provided so that the vertical position can be adjusted.