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1A.
The invention pertains to a device on a spinning can for textile fibre band, e.g. of cotton, chemical fibres or similar items, in which the spinning can has an oblong cross-section and a vertically adjustable floor element, whereby an internal lifting mechanism is allocated to the floor element.
In a known device CEP 0 452 687), a lifting mechanism consists of two compression springs and a scissors screens which press against the floor element from below. During fillings the fibre band presses the floor element downwards- When the can is filled with fibre band, both the compressor springs and the scissors screen are pressed together upto a certain height . Thus, the floor element cannot be lowered upto the bottom end of the cans, whereby one loses can volume far the fibre band filling. A further disadvantage is that the known device has a cumbersome design-It is the task of this invention to create a device of the type already mentioned above, which would avoid the mentioned disadvantages, especially allow a greater filling of the cans and have a simple design.
Due to the load working from above, it is passible to lower the floor element right upto the bottom end of the cans, so that a significantly greater quantity of fibre band can be filled in-Due to the arrangement of the element at least partly above the floor element, a simple design is ensured . At the same time, the device as per the invention allows an economic manufacture of a spinning can with adjustable floor element for the fibre band.
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The invention is explained in more details on the basis of diagram and design examples.
The following are shown:
Fig. 1 Schematically in side view, a rectangular can at the exit of a draw frame, Fig.2 Perspective view of a rectangular can with vertically adjustable floor element
in the inner space;
Fig.3a Side view of a rectangular can with the device as per the invention; Fig.3b Sectional depiction I - I through the design shown in fig. 3a; Fig.3c Fastening of an end of a rubber band to a fixed bearing; Fig.4 Depiction of the compression and tensile forces acting on the adjustable floor
element with filled in fibre band; Fig. 5 A design form with two tensile springs and lugs on the floor element lying
outside;
Fig.6 A two-part drawing element made of an elastic and a non-elastic part; Fig.7 A single-part elastic drawing element, which is executed below the floor
element;
Fig. 8 An endless, two-part elastic drawing element;
Fig.9 A drawing element which is coiled around a coiling spool subjected to load; Fig.9a An end region of the coiling spool with rotating spring mechanism; and Fig. 10 A deflection opening in a side wall.
According to Fig. 1, round cans 1 are arranged below the feed table 2 of a draw frame, e.g. Trutzschler high performance draw frame HS, from which the feed band 3 (e.g. card sliver) is drawn off over rollers and the drafting frame 4 is guided in the direction A. After passing of the drafting frame 4, the distorted fibre band 5 lands into the revolving plate 6 of the can coiler and is deposited in rings in the rectangular can ?. The rectangular can 7 is arranged on a (not shown) driven carriage which transports the rectangular can 7 in the direction of the arrows B, C to and fro. The longitudinal direction of the rectangular can 7 is covered with the conveying mechanism B, C. By lowering the floor element 12 in the direction D (see fig. 2) one obtains a gentle depositing of the fibre band 5 in the rectangular can.
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Fig. 2 shows the rectangular can 7, which consists of two broad side walls 7a, 7b, two thin side walls 7c, 7d and a floor wall 7e. The length a of the side walls 7a, 7b is greater than the width b of the side walls 7c, 7d. The continuous side walls consist of two identical, bowl-shaped wall parts which are joined to one another at the points 8a and 8b. At the upper can edge there are beads. The wall parts are, for example, made of plastic, and there could be a surrounding metallic bead 9 for joining the wall parts. The rectangular can 7 is open at the top. In the inner space 10, the rectangular floor element 12 is situated, and can be vertically adjusted in the direction of the arrows D and E. The cross-section of the rectangular can 7 and the floor element 12 is basically rectangular shaped; the region of both the thin sides however have a rounded form adapted to the deposited fibre band rings.
According to figures. 3a, 3b, as drawing elements there are four rubber bands 13a to 13d, which have one of their ends connected to the floor element 12 and the other end to a fixed bearing 14 as shown in fig. 3c. The fixed bearings 14a to 14d are arranged on the outer surfaces of the side walls 7a and 7b. The rubber bands are guided around rounded deflection surfaces 15a to 15d in the region of the lower end of the rectangular can 7 and around the rounded bead 9 at the upper end of the rectangular can 7 and stretch above the floor element 12. In this way, elastic bands 15 are fixed on to the can walls, deflected and fastened to the floor element 12 (can floor). Thus the floor element 12 (without load from the fibre band 5) remains above in the can 7 and is moved downwards in the direction D by the filled in band 5. If one matches the expansion of the bands 15 and the weight to be supported with one another, then one can achieve a high quantity of filling. The device as per the invention on the can 7 has a simple design and the rubber bands do not involve much complication, so that the can 7 can be economically produced.
According to fig. 3b, the floor area 7e reveals a small distance, e.g. 10 mm to the spinning floor. On supporting on the floor area 7e, the floor element 12 can be lowered almost completely upto the lower end of the can. The floor element 12 is made, for example, of compressed plastic and is 10 mm thick and stable.
According to fig. 4, the can is half filled with (not shown) fibre band 5, i.e. the floor element is situated in the inner space 10 of the rectangular can 7 at half the height. The compression force P3 during filling in consists of the weight force (mass of the fibre band 5) and the filling force (pushing of the fibre band 5 which exits from the rotating plate 6), whereby the filling
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force is greater than the weight force. The compression force P3 is pitted against the tensile force of the elastic drawing elements 13', 13", which is composed of both the part drawing forces P1 andP2.
In figures 5 to 9, further advantageous design forms of the invention are shown.
According to fig. 5, two lugs 16', 16" at the floor element 12 pass through two vertical slots in the side walls 7c, 7d. Two tensile springs 17, 17" are fastened with one of their ends to the lugs 16' or 16" and with the other ends to be fixed bearings 18' or 18" in the region of the upper end of the rectangular can 7. Instead of tensile springs 17', 17", one can also use rubber bands or similar items.
According to fig. 6, the drawing element gripping on the floor element 12 is designed as a two-part element. The non-elastic part consists of a wear-resistant, tension-resistant smooth band 20, e.g. textile band, metal band, fibre-reinforced band or any similar item, one of whose ends grips on to the floor element 12 and is deflected around the bead 9 and slides on to the bead 9. To the other end of the band 20, a tensile spring 19 a rubber band or similar item is attached to one end, whose other end is fixed-supported.
According to fig. 7, there is a single-part elastic drawing element 21, e.g. an elastic band, which is executed below the floor element 12. Due to reasons of balance and stability, ideally two of the drawing elements 21 are arranged over the long wall sides 7a, 7b. The region bearing the floor element 12 can also be designed non-elastic.
According to fig. 8, there is an endless, two-part drawing element, whose one part is a non-elastic, wear-resistant band or similar item which is executed below the floor element 12, and whose both ends are fixed to an elastic drawing element, e.g. tensile spring 23, rubber band or similar item.
According to fig. 9, to the floor element 12, to one of its ends a non-elastic, fixed band 24 or similar item is fastened, whose other end is attached to a fixed coiling spool 25, which can be rotated in the direction of the arrows F, G. According to fig. 9a, the coiling spool 25 is elastically loaded with a rotation spring mechanism 26 in such a way, that the band 24 exerts a tensile force P1 upwards on the floor element 12 against the compression force P3. In fig. 9
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only one elastically loaded drawing element is shown; due to reasons of balance and stability, ideally at least two drawing elements are foreseen. The drawing element is either coilable or rollable.
According to fig. 10, in the side wall 7a (and in the not shown side wall 7b) there is an opening 28 going right through, through which the drawing element can go through and thereby get deflected. The deflecting surface is ideally rounded and smooth.
The schematic depiction shown in fig. 4 of the tensile and compression forces is in the same manner for the sequence of filling, e.g. at the draw frame, and the drawing off, e.g. at the OE-spinning machine of the fibre band into the or out of the spinning can 7.
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WE CLAIM:
1. An improved coiler can for accommodating sliver, comprisino (a) a vertical wall defining an inner can space and a can top
through which sliver may be deposited into and withdrawn
from said inner can space; said vertical wall including
apposite first and second sides; (b) a vertically shaftable bottom disposed in said inner can
space, said first and second sides flanking said bottom; and (c) a tension device connected to said shiftable bottom and
exerting a pulling force thereto toward said can top:
said tension device comprising:
(1) a first deflecting element secured to an upper edge
region of said first side of said vertical wall;
(2) a second deflecting element secured to a bottom-edge
region of said first side of said vertical wall,
(3) a third deflecting element secured to an upper edge region of said second side of said vertical wall;
(4> a fourth deflecting element secured to a bottom edge region of said second side of said vertical wall; and
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(5) an elongate tension element having an elastic length portion, said tension element being connected to said bottom and extending upward from opposite sides of said bottom and being trained about respective said first and second deflecting elements, said elongate tension element extending downward from said first and second deflecting elements and being trained about respective said third and fourth deflecting elements, whereby said tension element extends between said third and fourth deflecting elements in the bottom region of said first and second sides of said vertical wall.
2. The coiler can as claimed in claim 1, wherein said tension
element is endless and extends along and in engagement with an
underside of said bottom between said first and second sides of
said vertical wall.
3. The coiler can as claimed in claim 1, wherein said tension
element has an elastic length portion solely between said third
and fourth deflecting elements.
4. An improved cailer can for accommodating sliver, comprising
through which sliver may be deposited into and withdrawn from said inner ca.n space;
B.
(b) a vertically shiftable bottom disposed in said inner can
space; and
(c) a tension device connects to said shiftable hottom and
exerting a palling force therein toward said can top; said
tension device including:
(1) a tension element connected to said bottom and extending upward therefrom; and
(2) a spring-loaded winch secured to an upper edge region of said vertical wall; said tension element being wound an said winch and being resiliently urged upward by said winch for exerting an upward pulling force to said bottom .
5. An improved coiler can for accommodating sliver, comprising (a) a vertical wall defining an inner can space and a can top
through which sliver may be deposited into and withdrawn
from said inner can space; (b) a vertically shiftable bottom disposed in said inner can
space; and (c) a tension device connected to said shiftable bottom and
exerting a pulling force thereto toward said can top; said
tension ing device including
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(2) an aperture provided in said vertical wall; and
(3) a deflecting element mounted on said vertical wall in a
region of said aperture; said tension element being
trained about said deflecting element and passing
through said aperture from said inner space.
6. An improved coiler can far accommodating sliver, comprising
(a) a vertical wall defining an inner can space and a can tap
through which sliver may be deposited into and withdrawn
from said inner can space;
(b) a vertically shiftable bottom disposed in said inner can
space, and
c) a tension device connected to said shiftable bottom and exerting a pulling force thereto toward said can top, said tension device including an elastic tension element having a first end exerting an upward force to said bottom and a a second end and secured stationaryly; said second being attached externally to said vertical wall.
7. An improved coiler can far accommodating sliver, comprising
(a) a vertical wall defining an inner can space and a can top
through which sliver may be deposited into and withdrawn from said inner can space;
space; and
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(c) a tension device connected to said shiftable bottom and exerting a pulling force thereto toward said can top; said tension device including
(1) an elastic tension element exerting an upward force to
said bottom; and
(2) a deflecting element mounted on an upper edge region of
said vertical wall; said tension element being trained
about said deflecting element as it passes from said
inside space outward.
8. The coiler can as claimed in claim 7, wherein said
deflecting element is a roller.
9. A coiler can for accommodating sliver, comprising
(a) a vertical wall defining an inner can space and a can top
through which sliver may be deposited into and withdrawn from said inner can space;
(b) a vertically shiftable bottom disposed in said inner can
space, and
(c) a tension device connected to said shiftable bottom and exerting a pulling force thereto toward said can top 5 said tension device including a tension element connected to said bottom and exerting an upward pulling force thereto; said tension element being deflected by said bottom and extending along and in contact with an underside thereof-
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10. An improved coiler can for accommodating sliver, comprising
(a) a vertical wall defining an inner space and a can top through which sliver may be deposited into and withdrawn from said inner can space,
(b) a vertically shiftable bottom disposed in said inner can space; and
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(c) a tension device connected to said shiftable bottom and exerting a pulling force thereto toward said can top; said tension device including a tension element connected to said bottom and exerting an upward pul1 ing force thereto; said tension element having elastic and non-elastic length portions, the nan-elastic length portion being connected to said bottom.
This invention relates to a coiler can for accommodating sliver comprises a vertical wall defining an inner can space (14) and a can top through which sliver may be deposited into and withdrawn from the can space, a vertically shiftable bottom (12) disposed in the inner can space (10) and a tension device (13,17) connected to the shiftable bottom and exerting a pulling force thereto toward the can top. |