Cotton sampling knife

Abstract

The invention relates to a cotton sampling knife. A front knife face, a rear knife face, a front knife edge and a rear knife edge are arranged at the front end of the cotton sampling knife, the front knife edge is an intersection line of the front knife face and the bottom surface of a knife body, and the rear knife edge is the intersection line of the rear knife face and the bottom surface of the knife body; an included angle between the front knife edge and the rear knife edge is 75-100 degrees; and the included angle theta between the intersection line of the front knife face and the rear knife face and the bottom surface of the knife body is 25-50 degrees. The cotton sampling knife provided by the invention is provided with slant knife faces and two knife edges and suitable for a circle cutting mode; and according to the cotton sampling knife, the procession and the circle cutting can be simultaneously realized, the obtained cotton sample is of cake shape, and the sampling depth can be optionally adjusted according to requirements.

Description

technical field [0001] The invention relates to a cotton sampling knife, in particular to a cotton sampling knife with an oblique knife surface and double blades suitable for circular cutting technology. Background technique [0002] At present, cotton bale sampling in the world is mainly manual sampling and mechanical sampling, and mechanical sampling is mainly based on the hydraulic cotton cutting machine developed in the United States, but this method belongs to semi-automatic sampling. [0003] The hydraulic cotton cutting machine developed in the United States adopts a vertical parallel double-knife structure with a distance of 150mm between the two knives. When sampling, the hydraulic valve controls the two knives to cut into the cotton bale from both sides of the bag body, and moves from top to bottom to move the two sides of the cotton bale. Cut two large openings with a length of about 254mm, and then manually cut them horizontally with a knife. The sample taken out...

AI Technical Summary

Problems solved by technology

[0006] The shortcomings and defects of the above two types: both can only obtain cotton samples on the surface of the cotton bale; they need to be cut manually with a knife, and cannot achieve automatic sampling

[0007] The knives in the vertical parallel double-knife structure of the prior art all use thin blades. These blades can only be inserted vertically into the cotton bale in one direction, and cannot perform cutting actions such as rotation.

In addition, when the blade of the prior art is inserted into the cotton bale, because the blade has a very small edge angle and both sides are attached to the cotton, the resistance is very large, and deep sampling cannot be realized.

[0008] There is no relevant literature record on the circular cutting sampling of cotton bales, and there is no report on the cutting tool suitable for circular cutting sampling. The existing cutting tools cannot be applied to this occasion at all.

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