An external guillotine-type fiber bundle cutting mechanism for beam strength meter and its application

Abstract

The invention relates to an external guillotine type fiber bundle cutting mechanism used for a bundle strength meter and its application. The cutting mechanism includes switch knife, push rod, cylinder, lower cutting valve, reset valve, upper clamping bar, pressure spring, slide rod, clamping spring seat, lower clamping bar, torsion plate, upper chuck, lower chuck, upper clamping seat, lower Clamp seat, base, suction port. The push rod between the switch knife and the cylinder is fixed with a compression spring seat, and there are two round holes on the compression spring seat so that the two sliding rods can move up and down between them. When the switch knife moves downward, it is fixed on the connecting rod. The compression spring seat presses the compression spring tightly, and the compression spring then presses the upper pressing bar, the upper and lower pressing bars are closed tightly, and the bundle of fibers between them is clamped; then the switch knife falls to the position where it contacts the fiber, and starts from one side along with the gate. The knife continues to descend to cut off all fibers. Applying the invention to the beam intensity meter can realize the automation and continuity of fiber cutting.

Description

An external guillotine fiber bundle cutting mechanism for bundle strength meter and use thereof technical field The present invention relates to a kind of external guillotine fiber bundle cutting mechanism and purposes for bundle strength meter, belonging to bundle fiber strength Force automatic measurement field. Background technique [0002] Fiber breaking strength represents the maximum ability of a fiber to withstand a tensile load, in Newtons (N), or centinewtons (cN). The breaking strength of a single fiber is called absolute strength, which is related to the thickness of the fiber. intensity (or relative intensity). The following three indicators are commonly used to indicate fiber breaking strength: (1) Breaking stress: it is the unit fiber The maximum tensile force that the fiber can bear on the cross section of the dimension, the unit is Pa; (2) Specific stress: it refers to the unit linear density fiber can withstand The maximum tensile force to be endur...

AI Technical Summary

Problems solved by technology

For small sample experiments, most of them are fixed and cut manually with a cutter or manually with a side knife. The manual disadvantage is that the operation is troublesome, and additional cutting tools are required. The efficiency is low, and the fibers are easily skewed during cutting, resulting in inaccurate cutting and large error fluctuations. In addition, most of them are cut by backing plate, not only the edge is not cut completely, but also the tool wears quickly; while the mechanism of manual cutting by side knife needs the side knife to move horizontally in the vertical direction of the fiber, and another mechanism is needed to complete this movement , not only takes up space, but also increases the manufacturing cost of the machine, and at the same time cannot meet the requirements of continuous operation, and the measurement time is longer

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