CC BY
19
Daniyarov Bektosh Bakhadirovich,
Assistant, Laysheva Elvira Talgatovna, Senior Lecturer, Alimbayev Erkin Sharipovich, Professor, Candidate, of Technical Sciences Tashkent Institute of Textile and Light Industry E-mail: ismoil27089@mail.ru
COMPARATIVE RESEARCH PRODUCTIVITY OF EQUIPMENT VARIOUS FOUNDATION TECHNOLOGY
Abstract: A comparative analysis the productivity of equipment various methods of preparation the basis. A methodology for calculating the productivity of a sizing-back aggregate, "SMH" (Zukker-Muller-Hakoba), Germany and "BEN-FELATEK" ("BENNINGER", Switzerland).
Keywords: basis, sinking, sizing, sizing-relining aggregate, formulas, speed, coefficient of useful time, productivity.
Introduction
At present, there are three known methods for the partion technology of preparing the basis for weaving:
1. The winding of the calculated number of warp yarns on the reel rollers, then from the batch of reel rolls, the formation of the weaving bead on the sizing machine is widely used in weaving. This method has a number of significant drawbacks noted in numerous studies, among them in the works [1, 2, 3].
2. The formation of weaving beams according to the reduced technology of preparation of the bases on the resizing unit of the Ivanovo State Textile Academy design [4] is carried out by winding the threads from the bobbins of the creel and one reel roller. Essentially, with this technology there is a back-up machine, while the second part of the main threads on the weaving nava is winding directly from the bobbins mounted on the creel. This design eliminates the waste of soft ends that remain on the rollers and reduces the number of re-rolls produced on the back-up machine.
3. In the proposed by the well-known firms "SMH" (Zukker-Muller-Xakoba) Germany and "BEN-FELATEK" ("BENNINGER" Switzerland), the preparation of the substrate is carried out on a re-sizing machine and a distillation machine. The advantage of this technology, on waste output, is noted in the results of our studies [5].
A comparative analysis of the amount of waste with different methods of preparing the basis was carried out in [6]. The results of the analysis show that the least amount ofwaste is obtained on the re-sizing unit and the distillation machine.
To analyze the performance of equipment with different methods ofpreparing the basics, we consider machines of the type ofpacks being formed-a reel roller and weaving.
The productivity of the process of forming a reel roller is determined by the known formula: V- 60-T - m„
nCB =
KnB
106
(1)
Where: V - linear speed of warping, m / min.
То - he linear density of the warp yarns, tex.
m - number of threads on the reel roller.
C
KnB - coefficient of useful working time of the machine.
In formula (1), To and are set by the standard for each article of tissue. Therefore, the increase in productivity during the formation of the reel roller is possible at the expense of speed and KnB.
A comparative analysis of reference-normative indicators of the process of the 50-year-old [7, 8, 9, 10], which are presented in (Table 1).
From the table 1 we see that the normalized value of the speed of navigation is in the range 600-800 m/min. The coefficient of useful time in recent years
is much lower. Thus, the existing technology of sleep- ber of burns [6] in sizing, but also characterized by ing is not only the cause of the release of a large num- low productivity.
Table 1.
№ Years T o tex m c strands L c meter V m / min Discontinu-uy KnB n kg / hr A source
1. 1968 25 492 15000 100 2,5 0,42 245 [7]
2. 1979 25 531 19000 600 3 0,49 234 [8]
3. 1987 25 531 19500 600 3 0,49 234 [9]
4. 2010 18,5 578 23000 800 3 0,39 200 [10]
5. 2013 42 888 23000 800 3 0,2 200 [11]
In the system of preparation of the substrate with the use of the re-sizing aggregate IGTA [4] is essentially similar to the classical system.
Let us analyze the productivity of the formation of a reel roller on a sizing machine [10]. The input packages on this machine are conical bobbins mounted on a creel.
The productivity of the sizing machine is determined by the known formula:
n = V • 60 • mm-T0 • mm ^ (2)
m 10 6
where: V - speed of the warp threads on the sizing machine;
m - number of cohesive threads;
m '
To - linear density of sizing yarns;
KnB - coefficient of useful time.
When determining the rate of sizing, in contrast to the knitting, it is necessary to take into account the conTable 2.- The list of operations to calculate the
tact time of the yarns with the dressing solution and drying of the filaments in the drying chamber:
V = ■
H-106
m / min
a To ' mm '60
where: H - evaporative capacity of the sizing machine kg / h.
When calculating the rate of sizing on a sizing-back aggregate, the rate of sizing is adopted according to the characteristics of the aggregate [10].
To determine the CPV of the "SMH", "BEN-FELATEK" grinding-back aggregate, we use (Table 2), which shows the operations performed with different substrate preparation technologies.
This table also shows the performance of CPV and the actual performance for the same tissue Calico Art 299 [4].
KnB for various methods of preparing the basis
№ Name ofworks Existing technology Ivanovo State Textile Academy (ISTA) re-sizing aggregate Shlichtovalno the overflow aggregate "SMH". "BEN-FELATEK"
1 2 3 4 5
1. Change of bobbins (rates) + + +
2. Elimination of broken thread + + +
3. Change - output forging of the reel roller + + -
4. Wearing the machine when changing the output forging + + +
2) Operations that do not depend on the number of overrun shafts (T1)
5. Stopping the machine and closing the steam + + -
6. Lifting of the rollers + + -
7. Cutting off warp threads from the shafts + - -
1 2 3 4 5
8. Binding of the ends of threads of old and new base + + -
9. Steam on and start-up + + -
10. Skipping nodes through the machine + + +
3) Operations. depending on the number of overrunning shafts (T2)
11. Disengagement of the retarder braking system + + -
12. Ruffling of yarn remains from racks + - -
13. Removing the shaft from the racks + + -
14. Re-shaft installation + + -
15. Fixing and aligning the shafts + - -
16. Switching on the shaft braking system + + -
17. Connection of threads and skipping them between the reel roller + + -
18. Pulling out prices when refueling + + -
19. Laying prices when refueling a batch T3 + + -
4) Operation. depending on the number ofweaving beams 1 T3)
20. Removal of used bead (roller) + + +
21. Filling of a new bead (roller) + + +
22. Laying of price cords when changing beams (6 price cords per navaya) + + -
5) Operations. dependin g on the length of a single thread in a lot (T4)
23. Eliminating the break in the base + + +
24. Elimination of clamps + + +
6) Operations. depending on the number of threads on the new (T5)
25. Folding operation in a row + + +
26. Formwork roller forming back 0.37 0.21 0.96
27. Roller forming capacity. kg/h 646 247 293
28. The formation of a weaving nerve 0.764 0.581 0.753
29. Productivity of the formation of weaving beads. kg/h 405.6 173.1 660.75
In (table 2), the sign "+" denotes the presence of this operation, the "-" sign indicates the absence of a rewinding roller and weaving in the formation processes. From the analysis of (Table 2), note the following: The first group of operations (positions 1-4) for the existing technology and the re-sizing aggregate ISTA are identical and are performed on a back-up machine. When using the SMH and BEN-FELATEK grinding-back aggre-
gate, positions 1-4 are present, which are performed when the threads are threaded and wound onto a reel roller.
In the second group of operations, which do not depend on the number of back-up rolls [11] (positions 5-10), unlike the existing technology in the ISTA unit, there is no 7-position - cutting off the remainders of the warp threads because this machine sets one roller and Threads from it are rolled up to the end.
On the unit "SMH", "BEN-FELATEK", from the second group of operations, there is a skipping of the knots through the sizing machine when finishing the yarns on the working reels and switching to spare ones, with a quiet car running, the remaining operations are absent. In the third group ofoperations, depending on the number ofreel ridges, there is no operation with the ISTA aggregate, (position 12) - winding the remainders ofthe yarn from the overflow rollers when working on one roll from the batch.
The unit "SMH", "BEN-FELATEK" does not have all the operations of this group.
In the fourth group, the operations of the existing technology and on the IGTA unit are identical, the operation "Laying of price cords during the change of the waxes" is absent on the SMH and BEN-FELATEK grinding-back aggregate, since the new technology uses the final forging to create the re-rollers from which batch for installation on the rack of a distillation machine.
The fifth and sixth groups of operations are identical for all methods of preparation of the basis.
Operations that are absent on the sizing machine is taken into account in calculating the CPV and the productivity of the distillation machine on which the warp threads from the batch of overrun rollers are distilled to the weaving wire.
The CPV and the productivity of the equipment participating in the formation of the reel roller and weaving on three different technologies for the preparation of the
substrate were determined using the example of the cloth of Byaz art. 128 [9].
Compliance with the following filling parameters: linear density of substrates
As a result ofcalculating forgings and weft tex; number of threads per 10 cm, by base and duck; filament / 10 cm, filament / 10 cm; working on the basis of83%, duck 6.9%; number of threads at the base of 3378 threads, for the existing technology and the KMB unit; width of austerity 160 cm; for ISTA see, thread. was received; the number of rollers in the batch is -5, the number of threads in the bet is 675, with the capacity of the creel 720 [11]. Conjugation of the length of the base on the meter in meters, on the back roll meter, on the bobbin meter.
(Table 2) also shows the values of CPV and the productivity of the formation of the reel shaft and weaving for the existing technology [11], the aggregate IGTA [4] and for the sizing-back aggregate "SMH", "BEN-FELATEK" calculated by us. Analysis of KnB and performance of various ways of preparing the basis, shows: - KnB process of formation of the reel roller on the unit "SMH", "BEN-FELATEK" has the highest value of 1.77 more than the existing method. The actual performance is also 2.6 times higher. Due to the greater number of scrolling threads, the capacity of the IGTA unit is somewhat higher.
The productivity and KnB of the weaving process also has the best performance on the SMH, BEN-FELATEK.
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