Tearing machine of large width for the textile industry

Details Tearing machine of large width for the textile industry Tearing machine of large width for the textile industry

1989-08-07

1991-07-16

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

2411012, 2411014, 241280, 241152R, B02C 1912

Patent

active

050318446

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a tearing machine for use in the textile industry.
2. Description of the Relevant Art
A machine of this type is known, for example, by French Patent 2 283 247. This known machine comprises a feeding station which receives varied textile scraps, and introduces the scraps into a tearing drum with points, which disintegrates the material. The fibers obtained in this way are then evacuated in the form of a fibrous cloth which constitutes a basic pure material, for diverse subsequent fabrications.
Such a known disintegrator presents the distinctive feature of being achieved along a relatively thin width, for example in the order of 80 cm to 140 cm. The feeding is performed manually by an operator who puts the textile scraps on the feeding conveyor belt.
In practice, it would be advantageous to be able to achieve such a tearing along a much larger width (for example on the order of 2 meters). This is impossible to achieve with the known technology cited above. As a matter of fact, for one thing, such a width would be much larger than the breadth of a man in charge of the manual feeding. Additionally, the fibrous cloth obtained at the exit would present, on an equally large width, some significant irregularities, besides irregularities in thickness and density.
The present invention tries to avoid these inconveniences, by providing a tearing machine of large width, for example on the order of 2 meters, and even larger.


SUMMARY OF THE INVENTION

The tearing machine according to the invention comprises a rotary drum with points or teeth extending the entire width of the machine. The feeding of the tearing drum is performed by an automatically functioning station, comprising a vertical stack which receives the scraps to open, and in which these scraps are kept at an approximately constant level, while at least one of the partitions within the vertical stack, between which the scraps go down, comprises a vibrating assembly.
Following another characteristic of the invention, the vibrating wall of the feeding stack extends approximately the entire width of the machine, and accomplishes pulsations whose amplitude and frequency are adjustable.
According to another characteristic of the invention, the transverse and approximately vertical walls of the feeding stack are both achieved with a vibrating method.
According to another characteristic of the invention, at least one of the vibrating walls comprises perforations which make it permeable to the air, which permit recycling the recovered fibrous scraps there more downstream in the machine and forwarded by pneumatic transport.
According to another characteristic of the invention, the pneumatic transport which assures the recycling of the recovered scraps, has a centrifugal separator at the lower part from which are gathered the hard and heavy scraps, while from the upper part, a flux of air moves forward toward the upper part of the feeding stack, the entirety of the usable light fibers.
Following another characteristic of the invention, the machine comprises, downstream from the rotary drum of points, a conveyor strip with multiple perforations. A suction loading device is provided under the conveyor strip and extending the entire width of the cloth. The suction loading device's interior space is divided into several suction compartments divided along the width of the machine. This arrangement assures homogeneity of the fibrous cloth produced over the entire width of the machine, as well as uniformity in thickness and density.
Following another characteristic of the invention, the machine comprises, above the rotary drum with points, a transverse bridge. The length of the bridge can move a sharpening mechanism in both directions. The sharpening mechanism comprises a sharpener with a bushel rotary grindstone, in order to sharpen teeth of the drum over the entire length of the drum.
Following another characteristic of the invention, the machine is made in a modular form, meaning the

REFERENCES:
patent: 3370628 (1968-02-01), Waldrop

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