Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
  • D01H4/42—Control of driving or stopping
  • D01H4/44—Control of driving or stopping in rotor spinning
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
  • D01H1/14—Details
  • D01H1/20—Driving or stopping arrangements

Definitions

• the present invention relates to an oscillating device for the roving on a spinning machine.
• a spinning machine is able to process reels of roving to make reels of yarn, after drawing and twisting the roving.
• the spinning machine is composed of a portal, which the reels of roving are hung from, extending along a longitudinal axis.
• a drawing device generally formed of three pairs of cylinders having a longitudinal extension, which the roving passes between to be drafted, is positioned downstream of the reels of roving.
• the spindles, which the drawn and twisted yarn is wound onto, are positioned downstream of the drawing device on a base in a row along the longitudinal axis, rotating around their own vertical axis.
• the spinning machine has two opposite banks, each provided with a row of spindles.
• oscillating devices which operate by performing . an axial oscillation of the roving, for example in input to the drawing device, so that the roving is in contact with different zones of the cylinders.
• the purpose of the present invention is to make an oscillating device for the roving which overcomes the drawbacks mentioned in relation to the prior art.
• FIG. 1 shows a diagram of an embodiment of a spinning machine, comprising an oscillating device according to the present invention, according to one embodiment ;
• FIG. 1 shows a diagram of an oscillating device according to the present invention
• FIG. 3 shows a diagram of the main group of the oscillating device
• figure 4 shows a diagram in a side view of the main group in figure 3;
• FIG. 5 shows an axonometric view of the main group according to the present invention, observed from above;
• FIG. 6 shows an axonometric view of the main group according to the present invention, observed from below.
• a spinning machine extends mainly along a longitudinal axis X and comprises a support portal from which to hang reels of roving destined for processing.
• the spinning machine comprises a drawing device 100 of the roving, consisting of a set of coupled cylinders, positioned longitudinally and suitable for rotating around their own axis.
• the roving passing between the successive pairs of cylinders, undergoes drawing, caused by the different speeds of rotation of the cylinders of the two pairs.
• each side of the spinning machine comprises :
• a first pair of cylinders comprising a first drawing cylinder 1 and the relative pressure cylinder, immediately upstream of the spindles; the first drawing cylinder being rotatable upon command around a first rotation axis;
• a second pair of cylinders comprising a second drawing cylinder 2 and the relative second pressure cylinder, immediately upstream of the first pair; the second drawing cylinder being rotatable upon ⁇ ⁇ command around a second rotation axis;
• a third pair of cylinders comprising a third drawing cylinder 3 and the relative third pressure cylinder, immediately upstream of the second pair; that is to say immediately downstream of the reels of roving; the third drawing cylinder being rotatable upon command around a third rotation axis.
• the spinning machine further comprises at least a movement apparatus suitable for placing the drawing cylinders in rotation around their respective rotation axes upon command.
• the spinning machine 100 comprises a head movement apparatus, an end movement apparatus, and an intermediate movement apparatus, for example for the case of a large number of spindles, generally over 1200 and approximately equal to 1800.
• the first drawing cylinders 1 are interrupted along the longitudinal axis X, preferably at the point of the intermediate movement apparatus, so as to define first sections la and second sections lb.
• the end movement system comprises a first motor of the first cylinders 10, that is, an electric motor, to move the first drawing cylinders 1.
• the first motor of the first cylinders 10 is kinematically connected to both the first drawing cylinders on the two sides of the spinning machine and moves the first sections la thereof.
• the head movement system envisages, in addition, a second motor of the first cylinders 10' positioned at the longitudinal end opposite that in which the first motor of the first ' cylinders 10 is positioned.
• the second motor of the first cylinders 10' is kinematically connected to both the first drawing cylinders on the two sides of the spinning machine and moves the second sections lb thereof.
• the second and third cylinders 2,3, are longitudinally interrupted in two points: at a separation line S positioned substantially at 1/3 of the total longitudinal length of said cylinders and at the intermediate movement apparatus.
• first, second and third sections 2a, 2b, 2c; 3a, 3b, 3c are identified.
• the end movement apparatus further comprises a first motor of the second and third cylinders 20 to move the second and third drawing cylinders 2, 3.
• the first motor of the second and third cylinders 20 is kinematically connected to both the second drawing- cylinders 2 of the two sides of the spinning machine and to both the third drawing cylinders 3 of the two sides of the spinning machine and moves the first sections 2a, 3a thereof .
• the intermediate movement apparatus comprises a second motor of the second and third cylinders 30 to move the second and third drawing cylinders 2, 3 positioned in an intermediate position longitudinally in relation to the longitudinal ends of the drawing cylinders, and moves the second sections 2b, 3b and third 2c, 3c of said second and third cylinders 2, 3.
• Each movement apparatus comprises a support structure for the support of the motors of the relative transmission devices of the rotary motion to the cylinders .
• the spinning machine further comprises an oscillating device 200 suitable for performing a forced longitudinal oscillation of the rovings during the functioning of the spinning machine.
• the oscillating device is moved by the second motor of the second and third cylinders 30, that is, by the motor comprised in the intermediate movement apparatus.
• the oscillating device 200 comprises an input shaft .202 having its axis parallel to the longitudinal direction, supported by the support structure of the intermediate movement apparatus.
• the input shaft 202 is placed in rotation by a belt 203, connected to the second motor of the second and third cylinders 30.
• the oscillating device 200 comprises a reducer 204, preferably comprising a worm, suitable for transforming the rotary movement entering along a horizontal axis, parallel to the longitudinal axis X, into an outgoing rotary movement along a vertical axis V, orthogonal to the horizontal plane.
• a reducer 204 preferably comprising a worm, suitable for transforming the rotary movement entering along a horizontal axis, parallel to the longitudinal axis X, into an outgoing rotary movement along a vertical axis V, orthogonal to the horizontal plane.
• the oscillating device 200 comprises a cam 206 rotatable around said vertical axis V and connected to the output of the reducer 204.
• the oscillating device 200 comprises a main crossbar 208, having its main extension along a transversal axis Y, orthogonal to the longitudinal axis X and parallel to the horizontal plane.
• the main crossbar 208 is provided with a connection element 208a, such as a bearing, engaged with the cam 206.
• the cam 206 is provided with a bilateral constraint suitable for transforming a continuous rotary movement into an alternate translation movement, that is, in an oscillation along the longitudinal axis X.
• said bilateral constraint consists of a groove 210, in which said connection element 208a is inserted, suitable for the bilateral constraint of the translation movement of said connection element 208a.
• the main crossbar 208 extends along the transversal direction Y towards the two sides of the spinning machine .
• said main crossbar 208 comprises a central portion 212 and lateral wings 214 which flank the two sides of the central portion 212.
• said lateral wings 214 lie on an imaginary plane substantially parallel to the imaginary plane ' formed by the rotation axes of the three drawing cylinders 1,2,3 and therefore parallel to the longitudinal axis X and incident to the horizontal plane, for example downwards from the third cylinder 3 to the first cylinder 1.
• the oscillating device 200 comprises, on each side of the spinning machine, an oscillation reducer lever 220, that is, a force-multiplying lever.
• the oscillating device 200 comprises a junction ' element 230, having a longitudinal extension towards the second sections 2b, 3b and towards the third sections 2c, 3c of the second and third cylinders 2, 3; for example, the junction element 230, is made in two parts 230a, 230b, respectively towards the second sections 2b, 3b and towards the third sections 2c, 3c of the second and third cylinders 2, 3.
• the lever 220 is hinged in a first application point to the main crossbar 208 and in a second application point is hinged . to the support structure. Between these two application points, the lever 220 is hinged to the junction element 230.
• the oscillating device comprises an engagement element 216, such as a bearing, attached to the lateral wing 214 of the main crossbar 208.
• the position of the engagement element 216 on the lateral wing 214 is adjustable.
• the lever 220 has a seat 222, for example in the form of a slot, which the engagement element 216 is inserted in to form the first application point.
• the oscillating device 200 comprises an attachment plate 250 for attaching a hinge 252 to the weight bearing support structure, to which the lever 220 is hinged to form the second application point.
• the oscillating device 200 comprises a further hinge 260 for the engagement of the lever 220 and the junction element 230.
• the oscillating device comprises on both sides of the spinning machine, yarn guide rods 270, 280 extending longitudinally from the intermediate movement apparatus to the ends of the drawing cylinders.
• first yarn guide rods 270 extend from the intermediate movement apparatus towards the ends of the cylinders, longitudinally overlapping the first sections la of the first drawing cylinders 1 and the first and second sections 2a, 2b; 3a, 3b of the second and third drawing cylinders 2,3.
• second yarn guide rods 280 extend from the intermediate movement apparatus towards the ends of the cylinders, longitudinally overlapping the second sections lb of the first drawing cylinders 1 and the third sections 2c; 3c of the second and third drawing cylinders 2,3.
• the yarn guide rods 270, 280 are provided with a plurality of yarn guide means 290, one for each spinning station, suitable for deviating the roving during its passage.
• said yarn guide means are positioned upstream of the third drawing cylinder 3.
• said yarn guide means comprise a funnel.
• connection between the junction element 230 and the yarn guide rods 270, 280 is adjustable.
• the junction element 230 comprises a flange 232 at the connection end, to which the yarn guide rod 270, 280 may be attached, for example by- means of screws 234; the flange 232 is sliding and the position is adjustable by means of further screws 236.
• the second motor of the second and third cylinders 30 moves the input shaft 22 in rotation by means of the belt 203 and the reducer 204 reduces the speed of rotation and transforms the rotational movement along an axis parallel to the longitudinal axis X into a rotary movement along a vertical axis Y.
• the reducer 204 then places the cam 206 in rotation and an oscillatory translation movement in the longitudinal direction X is imposed on the connection element 208a, connected to the cam 206.
• connection element 208a The oscillatory movement of the connection element 208a is transferred to the main crossbar 208, integral with the connection element 208a.
• the yarn guide means of said yarn guide rods 270, 280 are thus given an oscillatory, translation movement in the longitudinal direction X and move the roving being processed on each spinning station with an oscillatory movement in the longitudinal direction X.
• the oscillating device according to the present invention has a very simple structure and makes, it possible to work from the intermediate movement apparatus towards the head and the end of the spinning machine.
• the oscillating device is adaptable to various types of spinning machine, in that numerous components present a position which may be adjusted as needed.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Chemical And Physical Treatments For Wood And The Like (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
• Winding Filamentary Materials (AREA)
• Inorganic Fibers (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

Family

ID=45571619

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Citations (1)

Family Cites Families (7)

• 2011
  • 2011-12-20 IT IT000178A patent/ITBS20110178A1/it unknown
• 2012
  • 2012-12-19 CN CN201280063141.7A patent/CN104080961B/zh active Active
  • 2012-12-19 CH CH00924/14A patent/CH707638B1/it unknown
  • 2012-12-19 DE DE112012005348.6T patent/DE112012005348B4/de active Active
  • 2012-12-19 WO PCT/IB2012/057488 patent/WO2013093806A1/en active Application Filing
  • 2012-12-19 BR BR112014014988-7A patent/BR112014014988B1/pt active IP Right Grant

Patent Citations (1)

Also Published As

Similar Documents

Legal Events