JPH0220732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a residual roving treatment device used in the spinning industry.

(Prior Art) In the roving process of spinning, rovings are formed by being wound around a bobbin, and the rovings are used in the next spinning process. In this spinning process, it is preferable that all the rovings wound around the bobbin are used, but in reality some of the rovings remain on the bobbin, and this remaining roving is opened and mixed. It is returned to the cotton process and used as recycled cotton.

Conventionally, the remaining rovings are generally defibrated by being hit with an impeller of a blower.

(Problems to be solved by the invention) However, in the conventional defibration method, the fibers constituting the rovings are hardly loosened,
The original shape of the roving remains, and the resulting reused cotton is disadvantageous in terms of quality. In other words, it is no exaggeration to say that conventional defibration methods simply cut the rovings;
The reality is that defibration is hardly performed.

For this reason, the feedback position of the reused cotton in the mixing and batting process is on the upstream side, and it is necessary to undergo sufficient defibration work in the mixing and batting process, which is disadvantageous from the viewpoint of fiber damage.

(Means for Solving the Problems) In view of the above-mentioned problems, the present invention provides a residual roving treatment that can substantially completely unravel the fibers constituting the roving to obtain recycled cotton of good quality. The purpose is to provide equipment. In order to achieve this objective, the residual roving processing device of the present invention includes a supply section that supplies residual roving into a duct, a defibrating section that is disposed in the duct and defibrates the residual roving, and and an air conveyance section for conveying the fibers in the duct, and a ring-shaped nozzle connected to a compressed air supply device is disposed in the defibration section, and the residual roving passing through the center of the nozzle is It is characterized by having a plurality of blowholes for injecting compressed air with a gauge pressure of 3 to 6 kg/cm ² towards the target.

(Function) According to the present invention, when the residual roving passes through the center of the ring-shaped nozzle, compressed air with a gauge pressure of 3 to 6 Kg/cm ² is injected from the nozzle toward the residual roving,
Due to the pressure and jet flow at that time, the fibers constituting the remaining rovings are almost completely loosened, and the loosened fibers are guided as they are to the duct by the air conveying section and are air conveyed.

By jetting compressed air from the ring-shaped nozzle, it is possible to defibrate the residual roving to a degree of defibration of 90% or more, and for this reason, the recycled cotton obtained from the residual roving processing device can be passed through the duct. , it becomes possible to feed back to the downstream side of the mixed batting process, which is advantageous in terms of fiber damage.

(Example) In the illustrated example, 1 is a supply unit that supplies the remaining roving yarn a into the duct 2, and the bobbin b is connected to the remaining roving yarn a.
It is provided with a rotation drive means 1a for rotating in the feeding direction. The duct 2 is arranged to connect the supply section 1 and a mixed batting process (not shown), and includes a defibration section 3 for defibrating the remaining rovings a, and air transporting the defibrated fibers c. It is equipped with a blower (air conveyance section) 4.

The defibrating section 3 is provided near the suction port 5 of the duct 2 and includes a funnel-shaped cylinder 6, a ring-shaped nozzle 7, and an umbrella-shaped cylinder 8. This defibrating section 3 is arranged in the vertical direction, and the air within the duct 2 flows from above to below in the defibrating section 3. The upper part of the funnel-shaped cylinder 6 is formed of a perforated plate and has a large number of holes. On the other hand, the lower part of the funnel-shaped cylinder 6 is formed of a plate material without holes, and a small diameter pipe part 9 is formed at the lower end. The ring-shaped nozzle 7 is arranged horizontally so as to be located on a circumference centered on the pipe part 9,
It has a plurality of blowholes 10 at positions on the inner peripheral side of its lower surface. Further, the ring-shaped nozzle 7 is connected to a compressed air supply device 12 such as a compressor via a connecting pipe 11, and a gauge pressure of 3 to 6 kg/kg is supplied from the blowhole 10.
cm ² , preferably a gauge pressure of 4 to 5 kg/cm ² , is configured to eject compressed air. The orientation of the fumarole holes 10 is set so that all the compressed air ejected from the plurality of fumarole holes 10 is concentrated at one point located below the pipe portion 9.
The umbrella-shaped cylinder 8 is arranged so as to cover the lower part of the funnel-shaped cylinder 6 and the ring-shaped nozzle 7.

When the rotation driving means 1a is rotated and the remaining rovings a of the bobbin b are fed into the duct 2 from the suction port 5, the remaining rovings a are transferred to the defibrating section 3 by the suction force of the blower 4 and its own weight. guided by. The tip of the remaining roving a is connected to the pipe portion 9 of the funnel-shaped cylinder 6.
hangs lower. Compressed air ejected from the ring-shaped nozzle 7 is intensively blown onto this hanging portion, and the pressure and jet flow sufficiently loosen the fibers c constituting the remaining roving yarn a. , defibrated into good condition. Unless the gauge pressure of the compressed air is 3 kg/cm ² or more, it is difficult to obtain a sufficient defibrating effect, and if the gauge pressure exceeds 6 kg/cm ² , it is difficult to perform smooth defibrating. The defibrated fibers c are guided to the umbrella-shaped cylinder 8, and carried by the jet flow and the air flow generated by the blower 4 through the duct 2 to reach the feedback position of the mixed batting process. The reused cotton obtained in this way has a high degree of defibration, for example 90
% or more, and in particular, by setting the gauge pressure to 4 to 5 Kg/cm ² and making other conditions favorable, the degree of defibration can be made close to 95%. Since the reused cotton obtained by the apparatus of the present invention has a good degree of defibration, its feedback position can be set downstream of the mixed batting process, which is advantageous in terms of fiber damage.

(Effects of the Invention) According to the present invention, residual rovings can be defibrated into a good condition, and reused cotton with good quality can be obtained. As a result, when this reused cotton is fed back to the mixed batting process, the feedback position can be set on the downstream side, which is advantageous in terms of fiber damage.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of an embodiment of the present invention, and FIG. 2 is a perspective view of its essential parts. DESCRIPTION OF SYMBOLS 1... Supply part, 2... Duct, 3... Defibration part, 4... Air conveyance part, 7... Ring-shaped nozzle, 10... Blowhole, 12... Compressed air supply device, a... Residual roving, c...
fiber.

Claims (1)

[Claims] 1. A supply unit that supplies the remaining rovings into the duct, a defibrating unit disposed within the duct to defibrate the remaining rovings, and an air conveying unit that transports the defibrated fibers within the duct, A ring-shaped nozzle connected to a compressed air supply device is arranged in the defibrating section, and a gauge pressure of 3 to 6 is applied to the residual roving passing through the center of the nozzle.
A residual roving processing device characterized by having a plurality of blowholes for injecting compressed air of kg/cm ² .