CN105002606A - Application of differential mechanism in textile machine - Google Patents

Abstract

The invention relates to an application of a differential mechanism in a textile machine, and discloses a method for manufacturing yarns with uniform yarnlevelness and in graduated colors in a spinning machine or a novelty twister. By means of the principle that the input rotating speed of the differential mechanism is equal to half of the sum of the rotating speeds of two output shafts, if the input rotating speed is constant, the sum of the rotating speeds of two output shafts is constant, the two o output shafts separately drive two rear rollers, the sum of the rotating speeds of the two rear rollers is constant, and therefore the sum of wool tops fed by the two rear rollers is constant, and the yarns are uniform in yarnlevelness.

Description

Application of Differential Gear in Textile Machinery

technical field

The invention relates to the technical field of textiles, in particular to the application of differential gears in textile machines.

Background technique

Now, many factories change the spinning frame or fancy twisting machine into double rear roller feeding, the purpose is to produce yarns with gradual colors, that is, the yarn color gradually changes from one color to another color, such that The ombré effect appears when the yarn is woven into clothing. In order to make the yarns of gradient colors dry evenly, it is necessary to keep the sum of the feeding speeds of the two rollers constant.

At present, most people use computers to control two AC servo motors, and the AC servo motors drive two rear rollers. This method is not only costly, but also the AC servo motors are affected by torque changes and response speeds. It is also impossible for the sum of input speeds to be absolutely constant.

Contents of the invention

The purpose of the present invention is to provide a simple and reliable method to realize that the sum of the feeding speeds of the two rear rollers is always constant.

In order to achieve the above object, the present invention adopts a differential, utilizes the principle that twice the input rotational speed of the differential is equal to the sum of the rotational speeds of the two output shafts, if the input rotational speed of the differential is constant, the difference between the rotational speeds of the two output shafts and remain unchanged.

If the speed difference between the two output shafts remains constant, as long as the frequency converter is used to control the speed of one of the shafts, the speed of the other shaft is equal to twice the input speed of the differential minus the speed of the shaft controlled by the frequency converter .

If the speed of the shaft controlled by the frequency converter increases gradually from zero, the speed of the other shaft gradually decreases from the maximum value. Roller, so that the sum of the feeding speeds of the two rear rollers remains constant.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

Among them: 1. Small bevel gear; 2. Human bevel gear; 3. Shell; 4. A planetary gear; 5. B planetary gear; 6. B half-shaft wheel; 7. A half-shaft wheel; 8. A half-shaft; 9. Half shaft B; 10. Frequency conversion motor; 11. Coupling; 12. A sprocket; 13. A' sprocket; 14. A Jin roller; 15. B sprocket; 16. B' sprocket; 17 , B rear roller.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Embodiment one:

As shown in Figure 1, the small bevel gear 1 is driven by the main motor, the small bevel gear 1 decelerates and drives the large bevel gear 2, the large bevel gear 2 is connected to the shell 3, and the large bevel gear 2 and the shell 3 wind around the A half axis 8 and B The center of the semi-axis 9 rotates, and the A planetary gear 4 and the B planetary gear 5 not only rotate, but also rotate around the center of the A semi-axis 8 and the B semi-axis 9 together with the housing 3, which is also called revolution, and the A semi-axis wheel 7 and B half-shaft wheel 6 has only rotation, A half-shaft wheel 7 passes through A half-shaft 8, A sprocket wheel 12, A' sprocket 13 final 1 to 1 transmission A rear roller 14, B half-shaft wheel 6 passes through B half-shaft 9, The B sprocket 15 and the B' sprocket 16 finally drive the B rear roller 17 in a ratio of 1.

Assuming that the rotating speed of big bevel gear 2 is n2, the rotating speed of A half shaft wheel 7 is n7, and the rotating speed of B half shaft wheel 6 is n6, and n7 is also the rotating speed of A rear roller 14, and n6 is also the rotating speed of B rear roller 17. According to the mechanical principle: 2n2=n7+n6. n2 is constant, and n7 depends on the inverter driving the motor 10. When n7 increases, n6 decreases, and when n7 decreases, n6 increases. In short, the sum of n7 and n6 remains unchanged, that is to say, after A The sum of the top fed by the roller 14 and the B rear roller 17 is always constant, so that the uniformity of the spun yarn dryness is guaranteed, and the phenomenon of uneven thickness will not occur.

The invention is simple and reliable, has extremely low cost and is very practical.

Claims (3)

1. apply differential mechanism on fine spining machine or Novelty twisters, make the dry graduated colors yarn of even bar, differential mechanism input speed is constant, so two output axle shaft rotating speed sums are just constant, two output axle shafts drive two rear rollers respectively, make two rear roller rotating speed sums constant, thus ensure that the summation of two rear roller feeding wool tops remains unchanged, make the dry maintenance of spinned lines evenly.

2. the method according to claims 1, is characterized in that: differential mechanism input speed remains unchanged.

3. the method according to claims 1, is characterized in that: two output axle shafts drive two rear rollers respectively.