SU1548163A1 - Apparatus for stapling glass fibres - Google Patents

Abstract

The invention relates to glass production, in particular, to devices for continuously cutting strands of fiberglass-like fibrous materials. The goal is to improve the quality of cutting and increase reliability. In a cutting device containing a knife drum (NB) with cylindrical flanges fixed at its ends and knifes mounted between them and flush with them, a support roller (OR) and a drive, the OP and NB or knives in it are mounted with the possibility of mutual axial movement. Rotation from the drive shaft is transmitted to the NB due to friction between the cylindrical surfaces of the flanges and the NB and the cylindrical surface of the OP is transmitted to the latter, the force of the OP to the NB is adjusted by springs. During the contact of the knives with fiberglass, the fiberglass is chopped with their simultaneous cutting during the axial movement of the OR relative to the NB due to the fact that the profile of the cam fixed by the pin on the NB acts on the OR end, moving it in the axial direction. When this occurs, the final cutting of the fibers. Such a constructive solution allows a significant reduction in the pressing force of the OR to the NB, reducing the cutting force, and reducing the wear of the knives and the OR. The cutting quality is enhanced by the double-radial and axial impact of the knives on the fiberglass, which ensures its complete cutting. Placing the knives flush with the flanges allows for mutual axial movement of the OR and NB or knives, as well as completely eliminating the direct impact of the knives on the OR, which dramatically increases its durability and, consequently, the durability and reliability of the entire device. 5 il.

Description

The invention relates to the construction and building materials industry, to glass production, in particular, to devices for continuous cutting fiber glass bundles.

The purpose of the invention is to improve the quality of cutting and increase the reliability of the device.

FIG. 1 shows a device for cutting glass fiber, a general view (drive not shown); in fig. 2 - then

however, with the mechanism for the axial movement of the support roller relative to the knife drum} in FIG. 3 is the same with the mechanism for the axial movement of the knife drum relative to the support roller} in FIG. 4 is the same with the mechanism for the axial movement of the knives in the knife drum relative to the support roller; in fig. 5 is a section A-A in FIG. four.

The device contains placed in the housing 1 knife drum 2 with cylindrical flanges 3 and 4, fixed pins 5 on the ends of the drum

2 and installed between them on the drum 2 parallel, protruding in the radial direction, knives 6, set flush with the flanges

3 and 4 drums 2, mounted

on the same axis with the drive (not shown) on the bearings 7, coil springs 8 pressed against the cutter drum 2 support roller 9, feed roller 10, cocked by spring 11 to the support roller 9 and serving to feed glass fiber 12 through the die plate 13 to the cutting zone, and mechanisms mutual axial movement of the support roller, knife drum or knives in it, consisting of an end cam 14 mounted on housing 1 or flange 3 of knife drum 2, spring 15 of the power closure, ball 16 and stop 17.

The adjustment of the axial displacement stroke of the support roller 9 is carried out, for example, by selecting a cylindrical sleeve 18 of the shaft of the support roller 9 of a certain length.

The length of the segments of the cut glass fiber is determined by the number of knives 6.

The device works as follows.

- The rotation from the drive shaft (not shown) is transmitted to the knife drum 2 and due to the friction between the cylindrical surfaces of the flanges 3 and 4 of the knife drum 2 and the cylindrical surface of the support roller 9 is transferred to the latter, the force of the support roller 9 is adjusted by springs 8 to the knife drum 2. The stekloshchgut 12 is filled into the die guide 13 and, the passage between the support 9 and the feed 10 rollers, passes into the cutting zone. The spring 11 is regulated by the force of the supply of glassglass 12.

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During the contact of the knives 6 with glass fiber gut 12, the fiber glass gut fibers are fractured while cutting them during axial movement of the support roller 9 relative to the knife drum 2 due to the fact that the profile of the cam 14 fixed on the knife drum 2 acts on the end of the support roller 9, moving it axially. When this occurs, the final cutting of the fibers.

The support roller 9 is returned to its original position by a spring 15 placed in the axis of the support roller, which through the ball 16 acts on the stop 17. The number of lifts (approaches) of the end face 14 is determined by the number of knives 6.

When the blade drum 2 is axially moved relative to the support roller 9 at the moment of contact of the knives 6 with glass fiber 12, the ball 16 mounted in the flange 3 of the knife drum 2 attaches to the profile of the face cam 14 fixed to the housing 1, moving the knife drum 2 axially in bearings 7 slip. The return of the drum 2 to its original position is produced by the spring 15 acting on the stop 17. The number of axial movements of the knife drum 2 corresponds to the number of knives 6 and the number of balls 16 equal to them.

When the knives 6 are axially moved relative to the support roller 9 at the moment of contact of the knives 6 with glass fiber 12, the ball 16 mounted in the flange 3 of the knife drum 2 hits the profile of the front cam 14 fixed on the housing 1, moving the knife 6 in the slot of the knife drum 2 in the axial direction. The knife 6 is returned to its original position by a spring 15 placed in the flange 4 of the knife drum 2.

Claims (1)

Invention Formula A device for cutting fiberglass, containing a knife drum with cylindrical flanges fixed on its ends and installed between them and knives flush with them, support roller, drive, cutting quality and reliability increase, support roller and knife blade with the possibility of mutual axial movement, m figure 1 13 18 eight FIG. g 15 fig.b / b s sixteen  ftl A- A (turned around) J