Segmented cotton feeding device of carding machine

Abstract

The invention discloses a stage-type cotton feeding device for carding machines. The device comprises a cotton feeding plate and a cotton feeding roller. The cotton feeding roller can be rotarily supported on a support body; the cotton feeding plate is put above the cotton feeding roller; the support body is at least hinged with two cotton feeding plates that are adjacent with each other; the support body is also hinged with a pressure cross beam; between each cotton feeding plate and adjacent pressure cross beam supports a cotton feeding plate spring; the pressure cross beam is fixed with a pressure arm; the extension end of the pressure arm is arranged with a pressure spring. The pressure arm is also arranged with a test transducer. Two ends of the pressure cross beam are symmetrically fixed to connect with a pressure cross beam; the pressure cross beam is hinged on a support body through a pressure arm. The invention has not only simple and reasonable structure, uniform and effective maintenance of feeding for cotton layers, but also accurate test on cotton layers simultaneously. Therefore, the invention can be utilized both as a cotton feeding device for carding machines, and in a holding test device of an automatic leveling device for carding machines.

Description

technical field [0001] The invention relates to a carding machine for carding textile fibers, in particular to a carding machine cotton feeding device comprising a cotton feeding plate and a cotton feeding roller. Background technique [0002] The cotton feeding device of the carding machine is mainly composed of cotton feeding board, cotton feeding roller and other components. The cotton feeding roller and the cotton feeding board together form a strong jaw for the cotton layer to hold and feed the cotton layer to the licker-in roller, so that the licker-in roller can open and card the cotton layer horizontally. [0003] The cotton feeding device of the traditional carding machine is to install a rotating cotton feeding roller above the cotton feeding plate, and the two ends of the cotton feeding roller are pressed by gravity or spring, and form a grip feeding jaw with the cotton feeding plate. In this kind of cotton feeding device, on the one hand, because the cotton feed...

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Problems solved by technology

[0004] However, due to the randomness of the thickness of the cotton layer and the distribution of cotton bundles in the cotton layer, there is inevitably uneven density in the transverse direction of the cotton layer.

On the gripping jaws of the cotton feeding roller and the cotton feeding board, the grip strength is strong where the density of the cotton layer is high, and the grip strength is weak where the density is low. , which in turn directly affects the uniformity of carding machine sliver weight

Especially when there is a thickening mutation on the transverse section of the cotton layer, the distance between the gripping jaws is forced to increase, which seriously weakens the effective grip of the jaws on a wide range of the cotton layer in the transverse direction, especially making the cotton layer in the thin area out of control. Further deterioration of the uniformity of cotton feeding

[0005] In order to improve the cotton feeding uniformity of the cotton feeding device and ensure the uniformity and stability of the raw sliver quantity of the carding machine, most of the high-yield carding machines and the carding machines in Qinggang United are equipped with automatic leveling devices for carding machines. The detection mechanism of the whole device is nothing more than two structural forms: one is that a displacement sensor is installed at both ends of the cotton feeding roller or the cotton feeding plate, and the cotton layer thickness information measured by the displacement sensor is converted into electrical information by the control device. , to control the cotton feeding speed of the cotton feeding roller, this detection mechanism cannot fully and accurately reflect the difference in the thickness of the entire cotton layer in the transverse direction, and there is a distortion phenomenon of "generalizing from point to point"

Another structure is to add several sets of detection devices (such as 2-15 sets) at the rear of the cotton board, such as the open-loop autolevelling device behind the carding machine in the Chinese invention patent (patent No. 01142816.3), which discloses There are a number of detection mechanisms arranged in the width direction of the cotton board. These devices increase the detection points and improve the detection accuracy and the accuracy of the self-adjusting leveling device through the segmental detection of the cotton layer in the transverse direction. However, this mechanism has become very Complicated, and due to the use of multiple displacement sensors, the probability of failure increases, and sometimes its detection accuracy is not as good as the autoleveling device with detection at both ends

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