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
  • D01H1/14—Details
  • D01H1/20—Driving or stopping arrangements
  • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
  • D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt

Definitions

• the object of the present invention is a spindle tape drive spinning machine of a spinning line for obtaining bobbins of yarn from spools of roving, which usually originate from a roving frame.
• a spinning machine is able to operate spools of roving in order to obtain yarn bobbins therefrom after having drawn and twisted the roving.
• the spinning machine consists of a portal that extends along a longitudinal axis, on which the roving spools are hung, a drawing device arrangement beneath the portal and formed by a set of cylinders having a longitudinal extension, between which the roving passes in order to be drawn, and two opposite banks, each supporting the spindles, in a row along the longitudinal axis, which rotate about their vertical axis, on which the drawn and twisted yarn is wound.
• a handling device which comprises a main shaft that extends along the entire machine and is provided with a plurality of pulleys that are longitudinally spaced apart. Each pulley supports a belt (or tape), which engages with four spindles, two for each bank (the Anglo- Saxon name for this type of spinning machine is, in fact, "four-spindle spinning machine") .
• the handling device then comprises an electric motor, which is housed in the tail of the spinning machine, for rotating the main shaft .
• the object of the present invention is to design a spindle tape drive spinning machine that meets the needs of the sector and overcomes the disadvantages mentioned with reference to the prior art.
• Fig. 2 is a schematic lateral view of the spindle tape drive spinning machine in Fig. 1;
• FIG. 3 depicts a region of the spindle tape drive spinning machine in Fig. 1;
• FIG. 4 is a schematic view of the spindle tape drive spinning machine in Fig. 1;
• - Fig. 5 is a schematic view of the spindle tape drive spinning machine according to another embodiment of the invention .
• 1 indicates a spinning machine of a spinning line as a whole, which is able to obtain bobbins of yarn from roving spools S.
• the spinning machine 1 comprises a portal 2 that extends along a longitudinal axis X, on which a predefined number of roving spools S are hung.
• the spinning machine 1 also comprises a drawing device 4 that is arranged beneath the portal 2.
• the drawing device 4 comprises longitudinal lower cylinders 6, generally three or four motor-driven cylinders, which are longitudinally continuous or separated in adjacent portions, and a plurality of upper rollers 8, typically idle rollers, which are coupled to the lower cylinders 6under pressure in order to be actuated thereby to rotate.
• Each upper roller 8 that is coupled to the lower cylinder 6 defines a spinning point; for each spinning point, a roving passes between the upper roller 8 and the lower cylinder 6 so as to be drawn as a result of the peripheral speed of the lower cylinders, which increases from upstream to downstream.
• the spinning machine 1 Downstream of the drawing device 4, the spinning machine 1 also comprises a bank 10 that supports spindles 12 in a row along the longitudinal axis, which spindles rotate about their own vertical axis, on which the drawn and twisted yarn is wound.
• the spinning machine 1 also comprises a ring rail
• the spinning machine 1 lastly provides a framework
• the spinning machine 1 comprises two opposite banks 10A, 10B, along which respective spindles 12A, 12Bare arranged, which are longitudinally aligned between a head and a tail.
• the spinning machine 1 also comprises a handling apparatus for actuating the spindles 12A, 12B to rotate.
• Said handling apparatus comprises a main shaft 30, which has a longitudinal extension between the head and the tail of the spinning machine and is arranged between the two banks 10A, 10B.
• the main shaft 30 preferably seamlessly extends between the head and the tail of the spinning machine.
• said main shaft 30 is made up of a plurality of shaft portions, which are coaxial with one another and rotationally fixed to one another, for example by means of rigid joints.
• the main shaft 30 is made up of coaxial shaft portions that are not connected to one another, that is are separate and mechanically independent .
• the handling apparatus also comprises a plurality of pulleys 32, each of which is coaxial with the main shaft and is supported by one of said shaft portions and is rotationally fixed to said shaft portion.
• each spindle group (12A, 12B) i typically comprises four spindles, two belonging to the first bank 10A and two belonging to the second bank 10B.
• An equal number of spindles of the first bank and of the second bank preferably belong to the same spindle group .
• a spindle group (12A, 12B) i preferably comprises spindles 12Ai of the first bank 10A and corresponding spindles 12Bi of the second bank 10B, that is spindles having the same order number (for example, the first and the second spindle of the first bank and the first and second spindle of the second bank) .
• the handling apparatus comprises a plurality of transmission devices 38, wherein each transmission device 38 engages with the particular belt 34 in order to guide it and divert it from the particular pulley 32 to the spindles 12Ai, 12Bi of the particular spindle group (12A, 12B)i.
• Each transmission device 38 comprises a belt tensioning group 40 and a pair of rollers 42A, 42B for diverting the belt 34 towards the spindles 12Ai of the first bank 10A and the spindles 12Bi of the second bank 10B, respectively.
• the handling apparatus also comprises a plurality of electric motors 50 that are operatively connected to the main shaft 30 in order to place it in rotation about its axis.
• the drive axle of the motor 50 is offset with respect to the axis of rotation of the main cylinder 30 and is connected to an engagement portion 52 of the main shaft 30 by means of a motor belt 54.
• the drive axle of the motor 50 is coaxial with the main cylinder 30 and is connected to an engagement portion 52 of the main shaft 30 by means of mechanical connection.
• some motors are offset from the main cylinder and some motors are coaxial with the main cylinder.
• At least one motor 50 of said plurality of motors is preferably connected to an engagement portion 52 of the main shaft 30 that is located in an intermediate axial position of the main shaft 30, that is in an intermediate axial position between the head and the tail .
• the handling apparatus provides an electric motor that is arranged in the tail and an electric motor that is arranged in the head.
• the handling apparatus provides an electric motor arranged in the tail (and/or in the head) and at least one additional electric motor arranged in an intermediate position.
• the handling apparatus provides two or more electric motors, all of which are arranged in intermediate positions.
• the handling apparatus preferably comprises a single electric drive 60 for driving all the electric motors of said plurality of electric motors.
• the handling apparatus comprises a plurality of electric drives for electrically driving a particular motor.
• the spinning machine 1 lastly comprises a control group 70, which comprises a management panel that can be used by an operator to manage the function of the entire spinning machine 1, and a single logic unit 72, for example a CPU or a PLC, for managing the spinning machine
• the spinning machine 1 also comprises drawing management means, which are operatively connected to the drawing devices, for logically managing the drawing devices .
• the spinning machine 1 comprises spindle management means, which are operatively connected to the drive 60 in order to logically manage the motors 50.
• the spinning machine 1 comprises rail management means for logically managing the ring rails 14 of the entire spinning machine 1.
• Said drawing management means, spindle management means and rail management means are operatively connected to the logic unit 72 of the control group 70.
• the spinning machine according to the present invention overcomes the drawbacks mentioned with reference to the prior art.
• the spinning machine according to the invention advantageously makes it possible to provide a high number of spindles without using high- power motors which are known to have numerous disadvantages, such as the dimensions thereof, difficult management maintenance, increased dissipation of heat concentrated in demarcated zones, with the consequent need to remove it .
• the present invention advantageously overcomes drawbacks such as excessive torsion of the main shaft and makes it possible to reduce the dimensions of the tail, both longitudinally and transversally .

Landscapes

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

Applications Claiming Priority (2)

Publications (2)

Family

ID=67002184

Family Applications (1)

Country Status (5)

Family Cites Families (25)

• 2019
  • 2019-03-19 IT IT102019000003983A patent/IT201900003983A1/it unknown
• 2020
  • 2020-03-17 JP JP2021556574A patent/JP7425085B2/ja active Active
  • 2020-03-17 WO PCT/IB2020/052423 patent/WO2020188480A1/en active Search and Examination
  • 2020-03-17 EP EP20716566.3A patent/EP3942099B1/de active Active
  • 2020-03-17 CN CN202080022935.3A patent/CN113728131B/zh active Active

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