SU32664A1 - Folding cutter for artificial staple fiber - Google Patents

Description

The proposed folding cutting machine for artificial staple fiber is equipped with a spreading tool consisting of two screw rollers designed to turn the fiber bundle into a flat strip on the smooth part of the said rollers. In order to cut the resulting strip at a certain length of staple fibers, there is a device consisting of two pairs of rollers designed to tension the strip after it passes between the first pair of rollers and feed the transport sleeve to the second pair of rollers. The other part of the device consists of two horizontal knives, one of which is fixed and the other makes a uniform oscillatory movement in the horizontal plane; Both knives are designed to cut a strip at a certain length of fiber after it has been tensioned between the rollers.

The drawing shows the general scheme of the machine.

The proposed cutting machine is equipped with two devices: a single-spreading-for converting a bundle of staple fiber into strips, and the other for breaking a strip of a certain length into staple fibers.

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The spreading tool consists of two screw rollers B and B with a turn coil on, 4 circles and with a thread pitch increasing evenly from the middle to the right and left. These rollers serve to prevent the fiber bundle being divided by a screw surface into separate bundles along thread grooves, in a flat strip on the smooth part of the rollers / and Bi.

A device for cutting a strip of a certain length of staple fibers consists of two pairs of rollers and A and two knives H VL N. Rollers and K are designed to tension the strip after passing it between rollers E and feeding the transport sleeve / Ci to rollers K.

Of the two knives, one / D is immobile, and the other H makes a uniform oscillatory motion in the horizontal plane. Knives H and / Y are used to open a strip on a certain length of fiber after tensioning its meme; rollers and / c

The tourniquet enters B's zoronnu, from it into the nutrient rollers A, then the vital screw rollers B and 5 go to the razprg, which turn it into a flat strip 220 mm wide. The directions of movement of the harness and rollers are the same.

and the speed of the rollers is greater than the speed of the harness. If you turn on the plane of the cut part 6i d and b of the roller, it will be seen that at point b, (middle of the roller) the thread pitch is the smallest; to the right and to the left of the middle, it increases with each turn 0.3 mm. At point b, the thread pitch is 3.6 mm larger than in 6i, and it retains its value over the entire width of the roller to the right and to the left of the middle. All this is done in such a way that the right-to-left angle of the fibers does not exceed the values specified for the midline b, b values, since otherwise the fibers begin to slide along the upper part of the thread, the roller tears them, trying to gain itself. As the number of turns to the right or left increases, the difference decreases. Roller B rotates at a point b by a thread B and bundles and separates the fibers, leading them to the right and left of the middle, due to the difference in steps at points b and b. When turning to the point b on the roller C, a smooth surface comes along which merges the cut fibers along the thread grooves into a continuous strip. Then the roller operation process is repeated. Winds C and Q do not allow dangling threads to wind on rollers B and BI.

Next, the resulting strip is guided to the rollers E; having passed them, she under the action of her own power of tin falls on the transporting leather sleeve / d; the latter brings the strip to the rollers K, which tighten it due to a slightly increased speed as compared to rollers E and give tension to the strip, clamping it. The knife H cuts the strip and its fibers at an angle of 45 °, after which it receives a return movement, and when its end reaches point M, the rollers A, B, C, E and K will begin to rotate. Rollers K, release the cut off strip.

It is placed on the nutrient grid I of the machine intended for the preprocessing of staple fiber. When the flat strip is released, the knife still continues to move to the right of the fixed knife N. Staple fiber production stops at that moment when the knife H still has to reach the extreme right position one centimeter. The knife, moving to the left, cuts the strip indicated by a dotted line in the diagram, and all other movements begin to repeat in the order described above.

The subject matter of the invention.

1. Folding-cutting machine for artificial staple fiber, characterized by the use of a spreading device consisting of two screw rollers B and BI with a screw thread on the / 4 circumference and with a thread pitch that increases evenly from the middle to the right and left to turn the rope shtppelny fiber divided by a screw surface into separate bunches along the thread A of the thread, into a flat strip on the smooth part of the rollers B and B,

2. The form of the machine, according to p. 1, characterized in that for cutting strips of a certain length of staple fibers used a device consisting of two pairs of rollers E to K, which serve to tension the strip after it passes between the rollers E and feed the ATi transporting sleeve to the rollers K, and two horizontal knives — a stationary HI and performing a uniform oscillatory movement in the horizontal plane //, designed to cut the hair at a certain fiber length after it is tensioned between the rollers E and . TO.