CN113728131A

CN113728131A - Spindle tape driven spinning machine

Info

Publication number: CN113728131A
Application number: CN202080022935.3A
Authority: CN
Inventors: 罗萨里奥·阿森扎; 马西莫·加利
Original assignee: Marzoli SpA
Current assignee: Marzoli SpA
Priority date: 2019-03-19
Filing date: 2020-03-17
Publication date: 2021-11-30
Anticipated expiration: 2040-03-17
Also published as: WO2020188480A1; EP3942099B1; EP3942099A1; IT201900003983A1; CN113728131B; JP7425085B2; JP2022526306A

Abstract

A tape-driven spinning machine (1) comprising an apparatus for handling spindles, provided with: a main shaft (30); a plurality of strips (34), each strip engaging with the spindles of its own spindle group (12A, 12B) i); and a plurality of electric motors (50), wherein each motor (50) is operatively connected to a specific engagement portion (52) of the spindle (30) so as to put the spindle (30) in rotation.

Description

Spindle tape driven spinning machine

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

Spinning machines are known which are able to operate on a bobbin of roving in order to obtain a bobbin of yarn therefrom after drawing and twisting the roving.

For this purpose, the spinning machine comprises: a gantry extending along a longitudinal axis, the roving shaft being suspended from the gantry; a pulling device arranged below the gantry and formed by roller groups with longitudinal extension, the roving passing between the roller groups so as to be pulled; and two opposite banks, each supporting a spindle rotating about its vertical axis, the spindles being aligned along the longitudinal axis, onto which the drawn and twisted yarn is wound.

In a tape-driven spinning machine, the spindles are placed in rotation about a vertical axis by a handling device 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 for each bank (the Anglo-Saxon name for this spinning machine is in fact "four-spindle spinning machine"). Then, the processing means comprise an electric motor for rotating the spindle, which is housed in the tail of the spinning machine.

The current trend in the industry is to provide an extremely large number of spindles to a bank to increase the productivity of the spinning line.

However, the increase in the number of spindles increases the length of the spinning machine and, consequently, the length of the main shaft, with some drawbacks both in the functioning of the spinning machine and in other aspects such as the performance of maintenance work.

The object of the present invention is to devise a spindle-driven spinning machine that meets the needs of the industry and overcomes the drawbacks mentioned with reference to the prior art.

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

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

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

figure 3 depicts the zone of the spindle-driven spinning machine of figure 1;

FIG. 4 is a schematic view of the spindle-driven spinning machine of FIG. 1; and

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

With reference to the accompanying figures, 1 denotes, as a whole, a spinning machine of a spinning line, capable of obtaining bobbins from a roving bobbin S.

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

The spinning machine 1 further comprises a drawing device 4 arranged below the gantry 2.

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

Each upper roller 8 coupled to the lower roller 6 defines a spinning point; for each spinning point, the roving passes between the upper roller 8 and the lower roller 6 to be drawn under the action of the peripheral speed of the lower roller, which increases from upstream to downstream.

Downstream of the drawing device 4, the spinning machine 1 also comprises a bank 10 supporting along a longitudinal axis spindles 12 in a row, wherein the 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 14 with a longitudinal extension, provided with a reciprocating vertical movement, and supporting a ring 16 coaxial with the respective spindle 12 for winding the yarn on the tube.

Finally, the spinning machine 1 is provided with a frame 18, preferably only one, supported on the bottom layer T for supporting the main components, and in particular for supporting the drawing means 4, the bank 10 and the ring rail 14.

In particular, the spinning machine 1 comprises two opposite banks 10A, 10B along which are arranged

respective spindles

12A, 12B, which are longitudinally aligned between head and tail.

The spinning machine 1 also comprises a handling device 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 banks 10A, 10B.

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

According to an additional variant, the main shaft 30 consists of coaxial shaft portions that are not connected to each other (i.e. separate and mechanically independent).

The treatment device further comprises a plurality of pulleys 32, each coaxial with the main shaft and supported by one of said shaft portions and rotationally fixed thereto.

The processing apparatus further comprises a plurality of strips 34, each attached to a specific pulley 32 and a specific group of spindles (12A, 12B) i comprising spindles 12Ai of the first creel 10A and spindles 12Bi of the second creel 10B (i ═ 1 … n, where "n" is the total number of groups of spindles of the spinning machine).

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

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

Furthermore, the set of spindles (12A, 12B) i preferably comprises the spindles 12Ai of the first bank 10A and the corresponding spindles 12Bi of the second bank 10B, i.e. the spindles with the same order number (e.g. the first and second spindles of the first bank, and the first and second spindles of the second bank).

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

Each drive 38 comprises a belt-tensioning group 40 and a pair of

rollers

42A, 42B for turning the strip 34 towards the spindles 12Ai of the first bank 10A and the spindles 12Bi of the second bank 10B, respectively.

The treatment apparatus further comprises a plurality of electric motors 50 operatively connected to the spindle 30 for placing the spindle 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 an engagement portion 52 of the main shaft 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 of the motors are offset from the main drum and some of the 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 spindle 30 at: at an intermediate axial position of the main shaft 30, i.e. between the head and the tail.

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

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

According to another additional variant, the treatment apparatus provides two or more electric motors, all 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 treatment 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, for example a CPU or PLC, which can be used by the operator to manage the functions of the entire spinning machine 1.

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

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

Further, the spinning machine 1 includes a ring management means (rail management means) for logically managing the ring plates 14 of the entire spinning machine 1.

The traction management device, the spindle management device and the ring plate management device are operatively connected to a logic unit 72 of the control group 70.

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

In particular, the spinning machine according to the invention advantageously makes it possible to provide a large number of spindles without using powerful motors, which are known to have many drawbacks such as their size, difficulty in managing and maintaining, increased heat dissipation concentrated in the delimited areas, and therefore need 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.

In order to satisfy specific needs, it is obvious to a person skilled in the art to modify the spinning machine described above; such modifications are also included within the scope of protection as defined by the following claims.

Claims

1. Spinning machine (1) extending along a longitudinal axis (X) between a head and a tail, comprising:

-a first bank (10A) comprising a plurality of first spindles (12A) and a second bank (10B) opposite to the first bank (10A), comprising a plurality of second spindles (12B), wherein a plurality of spindle groups are defined, wherein each spindle group ((12A, 12B) i) comprises a predetermined number of first spindles (12Ai) and a predetermined number of second spindles (12 Bi);

-a processing device comprising:

a) a main shaft (30) made up of a plurality of shaft segments which are coaxial and meet longitudinally on the upper side, arranged transversely between the first bank (10A) and the second bank (10B), having a plurality of engagement portions (52) axially spaced apart;

b) a plurality of strips (34), wherein each strip (34) is engaged with a respective engagement portion (52) of the spindle and the spindles (12Ai, 12Bi) of a respective spindle group ((12A, 12B) i) so as to move them rotationally;

c) a plurality of electric motors (50), wherein each motor (50) is operatively connected to an engagement portion (52) of the spindle to rotate the spindle (30).

2. Spinning machine according to claim 1, wherein at least one motor (50) of the plurality of motors is connected to an engagement portion (52) of the main shaft (30) in the following positions: an intermediate axial position of the spindle (30) between the head and the tail.

3. Spinning machine 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 segments are structurally separate from each other and each shaft segment has at least one of the connecting portions (52).

5. Spinning machine according to any one of the preceding claims, wherein the handling device comprises a plurality of pulleys (32), each coaxial with the main shaft, supported by a respective shaft segment and rotatably coupled thereto.

6. Spinning machine according to any one of the preceding claims, wherein the processing apparatus comprises a plurality of transmissions (38), wherein each transmission (38) is engaged with a respective strip (34) to guide and transfer the strip from the spindle (30) to the spindles (12Ai, 12Bi) of a respective group of spindles ((12A, 12B) i).

7. Spinning machine according to any of the previous claims, wherein the processing device comprises a single electric drive (60) to drive all electric motors (50) of the plurality of electric motors.

8. Spinning machine according to any one of claims 1 to 6, wherein the processing device comprises a plurality of drives to electrically drive respective motors.

9. Spinning machine according to any of the previous claims, comprising a control group (70) comprising a management panel usable by the staff to manage the operations of the entire spinning machine (1) and a single logic unit (72) for the logical control of the spinning machine (1).

10. Spinning machine according to claim 9, comprising: a drawing device (4) for each bank (10A, 10B); and a pulling management device operatively connected to the pulling device and the logic unit for logical control of the pulling device.

11. Spinning machine according to claim 9 or 10, comprising: a ring rail (14) for each bank (10A, 10B); and a ring plate management device operatively connected to said logic unit for the logical control of the ring plate (14) of the entire spinning machine (1).

12. Spinning machine according to any of the previous claims, wherein at least one of the motors (50) has a motor axis offset with respect to the rotation axis of the main drum (30).

13. Spinning machine according to any of the previous claims, wherein at least one of the motors (50) has a motor axis coaxial with the rotation axis of the main drum (30).