CN113728131B - Tape Drive Spinning Machine - Google Patents

Abstract

A spindle tape drive spinning machine (1) comprises an apparatus for handling spindles, which apparatus is provided with: a main shaft (30); a plurality of strips (34), each strip being engaged with a spindle of its own spindle group (12A, 12B) i); and a plurality of electric motors (50), wherein each motor (50) is operatively connected to a particular engagement portion (52) of the spindle (30) to place the spindle (30) in rotation.

Description

Tape Drive Spinning Machine

technical field

The object of the invention is a tape-driven spinning machine of a spinning line for obtaining yarn bobbins from roving bobbins usually coming from a roving frame.

Background technique

Spinning machines are known capable of operating spools of roving in order to obtain bobbins therefrom after drawing and twisting the roving.

For this purpose, the spinning machine comprises: a gantry extending along a longitudinal axis, on which the roving bobbins are suspended; a drawing device, which is arranged below the gantry and is formed by a set of rollers with a longitudinal extension, between which the roving passes to be drawn drawing; and two opposing warp creels (banks, rows, groups), each warp creel supporting spindles rotating about its vertical axis, the spindles being in a row along the longitudinal axis, the drawn and twisted yarns being wound on a spindle.

In tape drive spinning machines, the spindles are placed in rotation about a vertical axis by handling means comprising a main shaft extending along the entire machine and provided with a plurality of pulleys spaced longitudinally. Each pulley supports a strip (or belt) which engages four spindles, two on each creel (the Anglo-Saxon name for this spinning machine is actually "four spindle spinning machine"). The processing device then comprises an electric motor for rotating the main shaft, housed in the tail of the spinning machine.

The current trend in the industry is to provide warp creels with an extremely high number of spindles to increase the productivity of the spinning line.

However, the increase in the number of spindles leads to an increase in the length of the spinning machine, and thus the length of the main shaft, and some disadvantages arise in the functioning of the spinning machine and in other aspects such as the execution of maintenance work.

Contents of the invention

The object of the present invention is to devise a tape driven spinning machine which meets the needs of the industry and overcomes the disadvantages mentioned with reference to the prior art.

Description of drawings

The characteristics and advantages of the tape-driven spinning machine according to the invention will become clear from the following description given by way of non-limiting example and on the basis of the accompanying drawings, in which:

- Figure 1 shows a part of a tape-driven spinning machine according to one embodiment of the invention;

- Figure 2 is a schematic side view of the tape-driven spinning machine of Figure 1;

- Figure 3 depicts the area of the tape-driven spinning machine in Figure 1;

- Figure 4 is a schematic diagram of the tape-driven spinning machine of Figure 1; and

- Figure 5 is a schematic view of a tape driven spinning machine according to another embodiment of the present invention.

Detailed ways

With reference to the accompanying drawings, 1 denotes the spinning machine of the spinning line as a whole, which is capable of obtaining bobbins S from roving spools.

The spinning machine 1 comprises a gantry 2 extending along a longitudinal axis X, on which a predetermined number of roving spools S are suspended.

The spinning machine 1 also comprises a pulling device 4 arranged below the gantry 2 .

The pulling device 4 comprises: a longitudinal lower roller 6, usually three or four motor-driven rollers, which is longitudinally continuous or separated in adjacent sections; and a plurality of upper rollers 8, usually idler rollers, The upper roller is coupled under pressure to the lower drum 6 so as to be actuated to rotate.

Each upper roll 8 coupled to the lower drum 6 defines a spinning point; for each spinning point, the roving passes between the upper roll 8 and the lower drum 6 so as to be drawn under the effect of the peripheral speed of the lower drum , the velocity increases from upstream to downstream.

Downstream of the drawing device 4, the spinning machine 1 also comprises a warp creel 10, which supports along a longitudinal axis a row of spindles 12, wherein the spindles rotate about their own vertical axes, drawing and twisting the yarn The wire is wound on the spindle.

The spinning machine 1 also comprises a longitudinally extending ring rail (ring rail, circular track) 14, which is provided with reciprocating vertical movement and supports a ring 16 coaxial with the corresponding spindle 12, so that the yarn The wire is wrapped around the tube.

Finally, the spinning machine 1 is provided with a frame 18, preferably only one frame, which is supported on the ground floor T for supporting the main components, and in particular for supporting the drawing device 4, the warp creel 10 and the ring bar 14 .

In particular, the spinning machine 1 comprises two opposing warp creels 10A, 10B along which are arranged respective spindles 12A, 12B, the spindles being aligned longitudinally between the head and the tail.

The spinning machine 1 also comprises handling devices for actuating the spindles 12A, 12B in rotation.

The handling device comprises a main shaft 30 having a longitudinal extension between the head and the tail of the spinning machine and arranged between the two warp creels 10A, 10B.

The main shaft 30 preferably extends seamlessly between the head and tail of the spinning machine. For example, said main shaft 30 is composed of a plurality of shaft parts which are coaxial with each other and fixed in rotation to each other, for example by rigid joints.

According to an additional variant, the main shaft 30 is composed of coaxial shaft parts not connected to each other, ie separate and mechanically independent.

The processing device also comprises a plurality of pulleys 32, each pulley being coaxial with the main shaft and supported by and rotationally fixed to one of said shaft parts.

The handling apparatus also comprises a plurality of strips 34, each attached to a particular pulley 32 and to a particular set (12A, 12B) i of spindles comprising the spindles 12Ai of the first creel 10A and the second creel 10B Spindles 12Bi (i=1...n, where "n" is the total number of spindle groups of the spinning machine).

For example, each spindle group ( 12A, 12B) i typically comprises four spindles, two belonging to the first creel 10A and two belonging to the second creel 10B.

The same numbered spindles of the first creel and of the second creel preferably belong to the same spindle group.

Furthermore, the group of spindles (12A, 12B)i preferably comprises the spindles 12Ai of the first creel 10A and the corresponding spindles 12Bi of the second creel 10B, i.e. the spindles with the same sequential numbering (eg, the first and the first of the first creel 12Bi). the second spindle, and the first and second spindles of the second warp creel).

According to a preferred embodiment, the processing apparatus comprises a plurality of transmissions 38, wherein each transmission 38 engages a specific strip 34 in order to guide it and transfer it from a specific pulley 32 to a spindle 12Ai of a specific group (12A, 12B) i , 12 Bi.

Each drive 38 comprises a belt tensioning group 40 and a pair of rollers 42A, 42B for diverting the strip 34 to the spindle 12Ai of the first creel 10A and the spindle 12Bi of the second creel 10B, respectively.

The processing apparatus also includes a plurality of electric motors 50 operatively connected to the main shaft 30 for placing the main shaft in rotation about its axis.

For example, the drive shaft of the motor 50 is offset relative to the axis of rotation of the main drum 30 and is connected to the engagement portion 52 of the main drum 30 by a motor strap 54 .

According to an additional embodiment ( FIG. 5 ), the drive shaft of the motor 50 is coaxial with the main drum 30 and is connected to the engagement portion 52 of the main shaft 30 by means of a mechanical connection.

According to another additional embodiment (not shown), some motors are offset from the main drum and some motors are coaxial with the main drum.

At least one motor 50 of the plurality of motors is preferably connected to an engagement portion 52 of the main shaft 30 at an intermediate axial position of the main shaft 30, ie at an intermediate axial position between the head and the tail. .

Thus, according to one embodiment, the processing device is provided with an electric motor arranged in the tail and an electric motor arranged in the head.

According to another embodiment, the processing device is provided with an electric motor arranged in the tail (and/or in the head), and at least one additional electric motor arranged in an intermediate position.

According to another additional variant, the processing device is provided with two or more electric motors, all of which are arranged in an intermediate position.

Furthermore, the processing device preferably comprises a single electric drive 60 for driving all electric motors of said plurality of electric motors.

According to one embodiment, the processing device comprises a plurality of electric drives for electrically driving a specific motor.

Finally, the spinning machine 1 comprises a control group 70 for managing the spinning machine 1, comprising a management panel and a single logic unit 72, such as a CPU or a PLC, which can be used by the operator to manage the functions of the entire spinning machine 1 .

The spinning machine 1 also comprises a draw management device operatively connected to the draw device for logically managing the draw device.

Furthermore, the spinning machine 1 comprises a spindle management device operatively connected to the drive 60 in order to logically manage the motor 50 .

Furthermore, the spinning machine 1 includes a rail management means (rail management means, track management device) for logically managing the ring bars 14 of the entire spinning machine 1 .

Said pull management, spindle management and ring bar management are operatively connected to a logic unit 72 of a control group 70 .

Innovatively, the spinning machine according to the invention overcomes the disadvantages mentioned with reference to the prior art.

In particular, the spinning machine according to the invention advantageously makes it possible to arrange a large number of spindles without using high-power motors, which are known to have many disadvantages, such as their size, difficulties in management and maintenance, heat dissipation concentrated in a defined area increase, so it needs to be removed.

Furthermore, the invention advantageously overcomes disadvantages such as excessive twisting of the main shaft, and makes it possible to reduce both the longitudinal and transverse dimensions of the tail.

It will be obvious to a person skilled in the art to modify the spinning machine described above in order to meet specific needs; such modifications are also included within the scope of protection defined by the following claims.

Claims (9)

1. Spinning mechanism (1) extending along the longitudinal axis (X) between the head and the tail, comprising: - a first warp creel (10A) and a second warp creel (10B) opposite to said first warp creel (10A), said first warp creel comprising a plurality of first spindles (12A), said second warp creel The rack comprises a plurality of second spindles (12B), wherein a plurality of groups of spindles are defined, wherein each group of spindles ((12A, 12B)i) comprises a predetermined number of first spindles and a predetermined number of second spindles; - drive equipment, including: a) a main shaft (30) extending along a longitudinal axis (X), said main shaft consisting of coaxial and longitudinally flanking shaft sections, arranged between said first warp creel (10A) and said Between the second warp creel (10B), the main shaft has a plurality of engaging portions (52) axially spaced apart; b) a plurality of pulleys (32), each coaxial with said main shaft, supported by and rotatably coupled to a respective shaft section; c) a plurality of strips (34), wherein each strip (34) is attached to a respective pulley (32), wherein each strip (34) is associated with a respective spindle set ((12A, 12B)i) The spindles are engaged so that they move in rotation; d) a plurality of electric motors (50), wherein each electric motor is operatively connected to an engagement portion (52) of said main shaft to rotate said main shaft (30); wherein said drive means comprises a single electric drive (60) to drive all of said plurality of electric motors; wherein said electric drive (60) is operatively connected to spindle management means for logically managing said electric motor; The spinning mechanism also includes: - a control group (70), said control group comprising: an administration panel that can be used by employees to manage the operation of the entire spinning establishment (1); and A single logic unit (72), operatively connected to said spindle management device, is used for the logic control of said spinning mechanism (1). 2. Spinning mechanism according to claim 1, wherein at least one electric motor of a plurality of said electric motors is connected to an engagement portion (52) of said main shaft (30) at the position: said The position is an intermediate axial position of the main shaft (30) between the head and the tail. 3. The spinning mechanism according to claim 1 or 2, wherein the shaft sections are connected to each other to be rotatably coupled. 4. Spinning machine according to claim 1 or 2, wherein the shaft sections are structurally separated from each other and each shaft section has at least one of the engagement sections (52). 5. Spinning mechanism according to claim 1 or 2, wherein said drive device comprises guide means (38), wherein each guide means (38) engages with a respective strip (34) to guide said strip and transfers the strip from the spindle (30) to the spindles of the corresponding spindle group ((12A, 12B)i). 6. Spinning mechanism according to claim 1, comprising: a drawing device (4) for each warp creel (10A, 10B); and a drawing management device operatively connected to to the pulling device and the logic unit for logic control of the pulling device. 7. Spinning mechanism according to claim 1 or 6, comprising: a ring shoe (14) for each warp creel (10A, 10B); and a ring shoe management device, said ring shoe management device Said ring bar (14) is operatively connected to said logic unit for logic control of said ring bar (14) of the whole spinning mechanism (1). 8. Spinning mechanism according to claim 1 or 2, wherein at least one of the electric motors (50) has a motor axis offset with respect to the axis of rotation of the main shaft (30). 9. Spinning mechanism according to claim 1 or 2, wherein at least one of the electric motors (50) has a motor axis coaxial with the rotation axis of the main shaft (30).

Images