SU916619A1 - Ring for spinning and doubling machines - Google Patents

Description

The invention relates to textile industry and can be used on ring spinning and twisting machines for spinning wool and flax.

Known ring spinning and twisting machines, having a rim and ni- ⁵ zhnyaya working surface which is angled at least 90 to the inner wall surface, the generatrix of which is placed obliquely to the axis vertitikalnoy is free and intersects it at a point ¹⁰ located below the rim [1 ^.

However, the use of this ring ve allows to reduce the breakage of yarn on the machine in a post-article degree.

The purpose of the invention - a decrease ^{of 15} obryv- Nosta yarn.

This goal is achieved by the fact that in the ring for spinning and twisting machines, having a rim, the lower · working · _m surface of which is at an angle of at least 90® to the inner surface of the wall, the generator of which is placed inclined to the vertical axis

2

the ring and crosses it at a point located below the side, the angle of inclination of the forming inner surface of the wall to the vertical axis of the ring is 5-9®.

The angle of inclination of the lower working surface of the rim to the inner surface of the ring wall is 90-106 °.

The drawing shows the ring section.

In the ring 1, the generator of the inner surface 2 of the wall is inclined to the vertical axis of the ring at an angle of 5-9 **. The ring has a side 3, the lower working surface 4 of which is located at an angle β to the inner surface 2 of the ring, equal to 90-106. Forming the inner surface 2 intersects the vertical axis of the ring at a point located below the side 3.

To study the dependence of breakage on the angles X and £ and identify the region of optimal values of these angles

916619

Used methods of planning and analysis of the experiment.

'Initially, the choice of angles <b and β is carried out in a wide range of variation:.

-9® 9 °;

_. 81 ° $ 114 °.

Experimental batches of rings with a diameter of 102 mm with various combinations of angles and β, made of iron powder, were tested together with standard runners on a machine П В-13 2111 without balloon spinning of machine wool during the production of semi-woolen yarn.

As a result of linear planning, a mathematical model was constructed,

<5

tight yarn breakage with corners << At the same time, the influence of the ring geometry on the friction moment when the ring-slider pair is working and on the amount of thread tension in the area between the slider and the chuck is checked using a device for measuring the friction torque.

It turns out that when the ring C works by angles aXi = —6 = 96 °,

-minimal value of breakage and friction torque. In this regard, narrow the range of variation:

–4 ° _14 °;

86 ° $ 106 **.

The test results of the experimental rings are given in the table.

Number of breaks per 100 spindles per hour

hail

hail

-12 90 70 -12 96 92 - 6 102 94 - 9 91 97 -13 92 81 - 9 101 81 - four 96 87 - 9 96 75 - 6 96 67

The data presented in the table take into account only cases of breaks between the slider and the cartridge. As a result of the implementation of the obtained data, a mathematical model has been created that connects the breakage with angles X and, which turns out to be adequate with a probability of 0.95. This indicates the correctness of the choice of intervals.

Thus, the region of minimal breakage lies within: L, = 5–9 and = 90–106®.

The hoof is installed on the ring plank of the machine and a slider slides on it, guiding the yarn or thread when it is wound on a cartridge.

For given values of the angle <К>, the reaction force between the moving un * and the ring has a vertical component that moves the slider up. Due to this, the gap between the shackle and the ring increases, which contributes to the improvement of the conditions for the passage of yarn

through the slider and reduce its breakage.

The proposed ring reduces the breakage of yarn by 12%. The greatest effect is achieved with values of and £, equal to 6 and 99, respectively.

Claims (2)

Claim 1. Ring for spinning and twisting machines, having a rim, the lower working surface of which is located at an angle of not less than 90 ^e to the inner surface of the wall, the generatrix of which is placed obliquely to the vertical axis of the ring and intersects it at a point below the rim, characterized in that to reduce ⁵⁵ yarn breakage, the angle of inclination of the generatrix of the inner surface of the wall to the vertical axis of the ring is 5-9 °. five 916619 6 2. Ring on π. 1, l and m of h and w - _ν o f e c i in that the angle of inclination of the lower working surface of the collar to the inner surface of the ring wall is 90-106 °.