JP2022503885A - Spinning machine with belt tensioning system - Google Patents

Abstract

A spinning machine (1) includes a plurality of spindles (61 to 6n, 81 to 8n) arranged in the longitudinal direction and an electric motor (181 to 18n, 201 to 20n). A belt (14) that rotates the spindle by engaging with the electric motor and pulling the spindle in the tangential direction, and a feeding direction changing means for bypassing the belt from the spindle to the motor ( 32) and a delivery direction changing means (34) for bypassing the belt from the motor toward the spindle. The main feed direction (Wi) and the feed direction (Y) form a feed angle (A), and the main feed direction (Wu) and the feed direction (Z) form a feed angle (B). To form. The feed angle (A) is larger than the feed angle (B), limiting the action of belt tension on the feed direction changing means (32). [Selection diagram] Fig. 2

Description

The subject of the present invention is a spinning line spinning machine for producing a bobbin of spun yarn from a bobbin of blister yarn.

As is well known, a spinning machine can draw a blister yarn, twist it, and then process the bobbin of the blister yarn to obtain a bobbin of the spun yarn.

For this purpose, the spinning machine is placed under a bridge that extends along a longitudinal axis suspended from a bobbin of blister yarn, and passes between them for the blister yarn to be pulled out in the longitudinal direction. A pull-out device consisting of a set of cylinders with an extension of, and a spindle carried in a row along the longitudinal axis, rotated about a vertical axis around which the drawn and twisted yarn is wound. It consists of a bank.

To increase the productivity of the spinning machine, it usually has two opposing banks, each with a row of spindles.

The spindle is rotated around a vertical axis by a belt drive and the belt is driven by an electric motor to engage the spindles of the two banks.

There are many solutions for drives for spinning machines.

Examples are described in WO 2009/040734, WO 2009/040839, and European Patent Application Publication No. 0400260 by the same applicant. In particular, WO 2009/040734 presents a solution with different configurations of spindle drives, whereby the delivery and delivery portions of the belt are in contact with the spindle, as described below. do not have. Other solutions are described in US Pat. No. 5,590,514, US Pat. No. 4,944,144, International Publication No. 2007/039260 and German Patent Application Publication No. 2125597. Has been done.

However, the current trend in the field is to provide banks with a very large number of spindles in order to increase the productivity of spinning lines. Therefore, it is necessary to have a drive device for the spindles that is effective in driving a large number of spindles, in particular the tension generated in the belt between the branches under tension pulled by the motor and the branches loosened. It is hoped that the problem of difference will be overcome.

An object of the present invention is to obtain a spinning machine equipped with a belt drive device for a spindle that satisfies the above requirements and overcomes the above problems.

This object is achieved by the spinning machine according to claim 1. The claims describe further advantageous embodiments.

The features and advantages of the spinning machine according to the invention are provided by non-limiting examples according to the accompanying drawings from the description shown below.
FIG. 1 is a diagram of a spinning machine provided with a spindle belt drive device according to an embodiment of the present invention. FIG. 2 shows the details of the drive device of FIG. FIG. 3 shows a group of supports for a belt drive device according to an embodiment of the present invention.

With reference to the accompanying drawings, reference numeral 1 is a spinning line spinning machine configured to obtain a spun yarn bobbin from a crude yarn bobbin, along a longitudinal axis X on which the crude yarn bobbin is suspended. With an extending bridge and a pull-out device consisting of a set of connected cylinders in a continuous or section that is located under the bridge and passes between them for the bobbin to be pulled out and has a longitudinal extension. Includes a bank, which carries the spindles in a row along the longitudinal axis and rotates about a vertical axis around which the drawn and twisted yarn is wound.

Preferably, the spinning frame 1 comprises two opposing banks 2 and 4, along which a spindle is longitudinally aligned between the head 10 and tail 12 of the spinning machine. Each group of 6 ¹ to 6 ⁿ and 8 ¹ to 8 ⁿ are arranged.

The spinning machine 1 further comprises at least one drive device for rotationally driving the spindle about its vertical axis.

This drive unit has a first portion 16a along the first bank 2, a second portion 16b along the second bank 4, and a head of the spinning machine having the first portion and the second portion. Includes a belt 14 arranged along a closed path that includes a head portion 16c that connects to 10 and a tail portion 16d that connects the first and second portions to the tail 12 of the spinning machine.

Along the first portion 16a of the path, the belt 14 touches the spindles 6 ^1-6n of the ^first bank 2, and along the second portion 16b of the path, the belt 14 is of the second bank 4. In contact with spindles 8 ^{1-8 n} , each spindle is rotated around its respective vertical axis.

The drive device further comprises at least one electric motor for driving the belt 14, for example, according to a preferred embodiment, the drive device is _a plurality of electric motors 18 1-18 arranged in the path of the belt 14. _n , 20 ₁ to 20 _n are provided.

To engage _each of the motors 18 _{1-18 n, 201-20 n , the} belt 14 moves through the engaging portion 22 of the closed path, where the engaging portion 22 is the first portion 16a or the second portion 16a. It includes a subtensioned portion 24 extending from the portion 16b towards the motor, a pulling portion 26 wound around the drive pulley of the motor, and a relaxation portion 28 towards the first portion 16a or the second portion 16b from the motor.

For example, if the clockwise direction of the motor is defined, the under-tensioned portion 24 is pulled by the motor.

In order to divert the belt 14 from the engaging portion 22 to the first portion 16a or the second portion 16b of the closing path, the drive device is, for example, an example of a feeding (in-feed) redirection means (detouring means). A pair of direction changing means 30 including a sending direction changing roller 32 and a sending direction changing roller 34 which is an example of the sending (outfeed) direction changing means are provided.

For example, the feeding direction changing roller 32 changes the course direction inward with the first portion 16a of the path, that is, toward the tensioned portion 24, while the sending direction changing roller 34 moves the sending portion 28. That is, the direction is turned toward the first portion 16a.

The under-tensioned portion 24 of the engaging portion 22 is typically straight and extends along the feed direction Y, and the first portion 16a is before being directed inward, i.e., to change the feed direction. Upstream of the means, the belt has a typically linear feed portion 16a'in contact with at least some of the spindles, the feed portion 16a' along the main feed direction Wi. It is extended.

Similarly, the relaxation portion 28 of the engagement portion 22 is typically linear and extends along the delivery direction Z, with the first portion 16a after being directed outwards, i.e., delivery. Downstream of the redirection means, the belt has a typically linear delivery portion 16a'' in contact with at least some of the spindles, the delivery portion 16a'' being the main delivery direction. It extends along Wu.

The feeding direction Y of the tensioned portion 24 forms a feeding angle A with the main feeding direction Wi of the feeding portion 16a'of the path of the belt 14, and similarly, the feeding direction Z of the relaxation portion 28 is a feeding direction Z. Of the path of the belt 14, the delivery angle B is formed with the main delivery direction Wu of the delivery portion 16a''.

In the solution illustrated, the rotation of the motor is clockwise (the tension of the belt in the under-tensioned portion 24 is greater than the tension of the belt in the relaxation portion 28) and the feed angle A is the feed direction changing means. Above, for example, greater than the delivery angle B to reduce the effect of tension on the belt on the first redirection roller 32.

Advantageously, this can reduce the action of the belt 14 on the feed roller 32, which is overloaded in the prior art solution, while at the same time reducing the pull in the prior art solution. The effect of belt tension on the delivery roller 34 can be increased.

According to a preferred embodiment, the drive comprises at least one support group 40 suitable for movably supporting at least _one motor 18 1-18 _n , _{201 -20 n .}

For example, the drive device relates to first motors 18 ₁ to 18 _n that engage the spindles 6 ¹ to 6 ⁿ of the first bank 6 and spindles 8 ¹ to 8 ⁿ of the second bank 8. A matching second motor _{201 to 20 n is} provided.

The first motor and the second motor are arranged side by side and are supported by the support group 40.

Preferably, the support group 40 supports the motor and includes a plate 42 that is rotatable about a plate shaft 44, wherein the plate shaft is located between the first motor and the second motor in the longitudinal direction. Be placed. The plate may be fixed in a predetermined angular position.

Preferably, the support group includes, for example, an arched slot 46 formed on or through the plate 42, into which the guide pins 48 slide.

For example, the support group 40 includes at least one bar that rotatably supports the plate 42, for example, the support group 40 has a pair of lateral support bars 50, 52 that rotatably support the plate 42. To prepare for.

Advantageously, the rotation of the plate 42 to adjust the tension of the belt or to perform maintenance work, in particular to replace the broken belt with a new endless belt, or to replace the drive pulley with another pulley of a different diameter. Can relax the belt 14, especially at the engaging portion 22.

Innovatively, the spinning machine according to the invention overcomes the shortcomings described with reference to the prior art, and in particular, in the prior art solutions, the tension of the belt on the more vulnerable components is adequate. Allows to be reduced.

It is clear that one of ordinary skill in the art can make changes to the spinning machines described above, which are within the scope of protection defined by the claims below, in order to meet the accompanying requirements.

Claims (7)

Spinning from a bobbin of blister yarn A spinning machine (1) of a spinning line for forming a bobbin of yarn.
With at least one bank (2, 4) having multiple spindles (6 ^{1-6 n} , 8 ^{1-8 n} ) and aligned longitudinally,
With at least one drive device for the spindle comprising at least _one electric motor (181-18 _n , _{201-20 n )} .
A belt (14) that rotates the spindle by engaging with the electric motor and pulling the spindle in the tangential direction.
The feeding direction changing means (32) for detouring the belt from the spindle toward the motor, and
A delivery direction changing means (34) for detouring the belt from the motor toward the spindle is provided.
Regarding the feeding direction of the belt (14)
Upstream of the feed direction changing means, the belt (14) contacts at least some of the plurality of spindles to move the feed portion (16a') along the main feed direction Wi. ;
The belt (14) moves the under-tensioned portion (24) along the feeding direction (Y) between the feeding direction changing means and the motor;
Downstream of the delivery direction changing means, the belt (14) contacts at least some of the plurality of spindles and moves a delivery portion (16a'') along the main delivery direction Wu. Let;
The belt (14) moves the relaxation portion (28) along the delivery direction (Z) between the motor and the delivery direction changing means;
The main feed direction (Wi) and the feed direction (Y) form a feed angle (A), and the main feed direction (Wu) and the feed direction (Z) deliver. Form angle (B);
A spinning machine (1) for a spinning line, wherein the feeding angle (A) is larger than the feeding angle (B), and the tension of the belt is restricted from acting on the feeding direction changing means. The spinning machine according to claim 1, wherein the at least one driving device includes a support group (40) suitable for movably supporting at least one motor. Two opposing banks (2, 4) are provided, and the belt (14) is a spindle (61 to 6 ⁿ ) of the ^first bank (2) and a spindle (81 to 6) of the ^second bank (4). 8 The spinning machine according to claim 1 or 2, which engages with ⁿ ). The at least one drive device includes a _first motor (181 to 18 _n ) that engages with a spindle (61 to 6 ⁿ ) of the ^first bank (2) and the second bank (4). The ^first _motor and the _second motor are adjacent to the support group ( ⁴⁰ ). The spinning machine according to claim 3, which is subordinate to claim 2. The support group (40) is rotatable about a plate shaft (44) arranged between the first motor and the second motor in the longitudinal direction, and can be fixed at a predetermined angle position. The spinning machine according to claim 4, comprising a plate (42) for supporting the motor. The spinning machine according to claim 5, wherein the support group includes means for guiding the rotation. 6. The means for guiding the rotation comprises an arched slot (46) formed on or through the plate (42) and to which a guide pin slides. The spinning machine described.

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