Classifications

• • 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
  • D01H1/06—Spinning or twisting machines in which the product is wound-up continuously cap type

Definitions

• the invention relates to the device for ring spinning or twisting comprising for each operating unit rotatably mounted and driven spindle and axially with the spindle rotatably mounted balloon separator with inner guiding surface for the yarn, while the spindle and the balloon separator have the same direction of rotation and are arranged mutually vertically in a reversibly adjustable manner.
• Both mentioned devices have been designed for continual spinning of textile yarns and comprise the spindle provided by a drive and a balloon separator in the form of a bell or a hollow roller, which encompasses the spindle concentrically, is rotatably mounted independently on the spindle and also provided with a drive, while a suitably shape modified end of balloon separator, being on the side of spindle, carries the traveller or a similar yarn guide.
• the produced yam is wound on the spindle upon its distribution due to mutual controlled vertical movement of the spindle and balloon separator.
• Such device for ring spinning enables to produce yarn at a substantially higher speed than the speed, at which it is possible to spin on a classic ring spinning machine, e.g. at the spindle rotation speed of 50 000 rotations per minute, because the speed of the traveller is towards the end of rotating balloon separator lower than it is at the classic fixed ring, and especially also because the inner wall of a balloon separator prevents creating of a loose balloon of a very quickly spun yarn.
• a substantial disadvantage of a such device is its energetic demand and technical complexity consisting in application of two independent drives, the drive of spindle and drive of balloon separator.
• the task of the invention is to solve by means of a simple and operationally reliable means the energetically advantageous drive of balloon separators without usage of motors.
• the given task is in principle solved by the device for ring spinning or twisting according to the invention, whose principle consists in that between the spindle and a balloon separator there is included a magnetic coupling for a direct synchronous contactless drive of balloon separator by means of a spindle.
• the term ,,magnet and derivatives of this term" in the text relate to the
• the document DE-OS 1 961 662 describes the device for forming the threads through a false twist, which includes the driving shaft for a drive of at least of one of three parallel arranged shafts which carry the friction disks, which enclose the wedge slot, in which the shaping tube is positioned. Between the driving shaft and the driven shaft there is inserted the magnetic coupling for transfer of a turning moment, formed by two coaxial magnets, between whose poles of opposite polarity there is a space of 1 - 3 mm. According to another embodiment of the said document one magnet is represented by a disk at the end of the driven shaft extending with a play into the cavity of magnet positioned at the adjacent end of the driving shaft. From the stated it is obvious that both shafts are axially immovable and do not exercise any movement in a vertical direction. The embodiment according to the shown document is not a topic for solution of the task under this invention.
• Magnetic coupling according to the invention is formed by a first bar magnet, which is in a concentric manner with the spindle mounted in an axial opening created in upper end of the spindle, and whose magnetic poles are oriented radially towards the axis of spindle, so that along the whole length of the first bar magnet around the upper section of the spindle there is created the first magnetic field, and at least by two on a non-magnetic balloon separator one above another arranged pairs of second magnets, which are in each pair positioned with opposite magnetic poles against one another in the same radial distance from axis of balloon separator and between them there is created a homogenous magnetic field, while in each mutual working position of spindle and the balloon separator at least a section of the first magnetic field of the first bar magnet extends into the homogenous magnetic field of at least one pair of second magnets. This could be obtained by selecting the length of the first bar magnet and a vertical distance between the pairs of short second bar magnets.
• the magnets of a pair of second magnets are created by short bar magnets.
• each pair of second magnets is formed by a ring magnet, which is provided with magnetic poles, that are oriented one against another, while the ring is mounted on the non-magnetic balloon separator.
• pairs of second magnets are formed by short bar magnets, it is advantageous, if these short bar magnets are positioned against each other in the ferromagnetic ring, which is arranged on a non-magnetic balloon separator.
• Fig. 1 shows an axonometric view on the working unit of the machine
• the Fig. 2 the spindle with cavity in a projection view
• the Fig. 3 a cross-section according to III - III plane from the Fig. 2
• the Fig.4 shows the balloon separator in a projection view
• the Fig. 5 - a cross-section according to V - V plane from the Fig. 4
• the Fig.1 represents an exemplary embodiment of operating unit of the machine for ring spinning or twisting, whose principle is explained in the DE 691
• Theoperating unit includes the drafting mechanism for fibre sliver, or roving or the feeding mechanism for a multiple thread system, depending if it is a machine for ring spinning or twisting. From the point of view of the invention it is the delivery mechanism for a supply fibre formation, which is indicated by a pair of feed rollers. Under the feed rollers i there are arranged the spindle 2 with a tube 3 for a yam package 4 and with a spindle 2 concentrically mounted balloon separator 5 with the inner guiding surface 6 for guiding the yarn £1 The spindle 2 is rotatably mounted in the spindle rail 9, which passes through alloperating units of the machine and exercises the program reversible vertical movement in direction of a double arrow 10.
• the whorl H of the spindle 2 is in a friction engagement with the belt drive 12.
• the balloon separator 5 creates the tubular body 7, whose lower section is shaped as a recessing 13 for mounting of the ring 14 with traveller 15.
• the balloon separator 5 is rotatably mounted in the bearing body H positioned on the immovable bank 17 of balloon separators passing through all operating units of the machine.
• the spindle rail 9 may be arranged stationary and the bank 17 of balloon separators vertically in a reversibly adjustable manner.
• the magnetic coupling is formed by a first bar magnet 19 of the L length, which is in a concentric manner with the spindle 2 mounted in an axial opening
• Magnetic poles of the first bar magnet 19 are with respect to the axis of the spindle oriented radially, so that along the whole length L of the first bar magnet 19 around the upper section of the spindle 2 there is created the first magnetic field 22.
• the magnetic coupling further comprises two pairs of second magnets arranged one above another on the balloon separator 5, which is made of a nonmagnetic material, e.g. of plastic.
• the magnets of both pairs of second magnets are created of short bar magnets 23a, 23b, which are in the pair positioned by opposite poles one against another in the same radial distance from axis of the balloon separator 5 and between them there is created a homogenous magnetic field 24 (Fig. 5).
• the short bar magnets 23a, 23b of each pair of second magnets are embedded in a non-magnetic material 25, e.g. plastic, and placed in ferromagnetic rings 26.
• the ferromagnetic rings 26 together with a respective pair of second magnets are tightly installed on casing of the balloon separator 5.
• the ferromagnetic rings 26 stabilise as to the position the second magnets and direct the magnetic flow.
• the ferromagnetic rings 26 together with second magnets are positioned inside the balloon separator 5. At the same time they do not protrude from inner guiding surface of the balloon separator s.
• the condition for a synchronous rotation of the balloon separator 5 and of the spindle 2 is that the length L of the first bar magnet 19 and the vertical distance between pairs of second magnets 23a, 23b, 28 are selected so that in each mutual working position of the spindle 2 and the balloon separator 5 the magnetic field 22 of the first bar magnet 19 extends into the homogenous magnetic field 24, 30 of at least one pair of second magnets 23a, 23b, 28.
• the Fig. 6 shows a variant of magnetic coupling, at which each pair of second magnets is formed by a ring magnet 28, which on the inner cylindrical surface 29 is provided with shaped magnetic poles N-S positioned one against the other and installed on casing of non-magnetic balloon separator 5. Between the magnetic poles N-S , the homogenous magnetic field 30 is being created. Length L of the first magnet 19 and the vertical distance 27 between ring magnets 28 is selected so that, in each working position of the spindle 2 the magnetic field 22 of the first bar magnet 19 extends into the homogenous magnetic field 30 of at least one of the ring magnets 28. It is advantageous if the magnets are formed by a nickel-plated body made of mixture of Fe, Nd and B.
• the first bar magnet 19 is exemplary formed by a cuboid having dimensions of 10 x 10 x 40 mm.
• the short bar magnets 23a, 23b are also nickel-plated bodies made of mixture of Fe, Nd and B having shape of a low cuboid.
• the machine is started via a program start of the spindle 2, of the balloon separator 5 and feed rollers ⁇ .
• the spindle 2 In a phase of spinning-in the spindle 2 is inserted into the cavity of the balloon separator 5.
• the yarn 8 delivered from the feed rollers 1 enters into the balloon separator 5, from which it is brought out by the traveller 15, and it is continually being wound up into the yarn package 4 on the tube 3.
• the rotating and vertically moving spindle 2 carries by means of a magnetic force the balloon separator 5, whose rotation speed is essentially identical with the rotation speed of the spindle 2.
• Overlapping of the first magnetic field 22 of the first bar magnet ,19 with the homogenous magnetic field 24, 30 of at least one pair of second magnets ensures that at each mutual working position of the spindle 2 and the balloon separator 5 continuity of magnetic linking between the spindle 2 and the balloon separator 5 is preserved.
• the feed rollers 1 By stopping the feed rollers 1 the delivery of a fibre formation is interrupted simultaneously.
• the spindle rail 9 goes down to perform a known, not in detail specified replacement of wound-up packages for empty tubes.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Spinning Or Twisting Of Yarns (AREA)

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Citations (3)

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• 2006
  • 2006-03-23 CZ CZ2006-194A patent/CZ306702B6/cs not_active IP Right Cessation
• 2007
  • 2007-03-22 WO PCT/CZ2007/000017 patent/WO2007107125A1/en active Application Filing

Patent Citations (3)

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