SU149243A1 - Weft Tension Tester - Google Patents

Description

A device for measuring the tension of the thread on the author. St. No 113654 by winding the thread onto the drum from the spool installed in the shuttle consists of three rollers covered by the thread, one of which is fixed on the lever of the device for measuring the tension of the thread, and the winding thread of the drum.

The proposed a-device for measuring the tension of the weft yarn differs from that known by the author. St. No. 113654 by the fact that the drive of the winding thread of the drum is made from the crankshaft of the weaving machine by means of a frictional transmission according to the type of drive used on the manual tachometer.

These differences simplify the design of the device and make it possible to measure the tension at different speeds of the weft yarn.

FIG. 1 shows the device, front view; in fig. 2 - the same, side view; in fig. 3 - device mounted on the canoe.

The device for measuring the tension of the weft yarn consists of a body 1 with a lid 2. In the center of the body there is an axis 3, resting on the ball 4, placed in a liner 5. On the end of the axis 3, a flange 6 is fastened, carrying a conical rubber head 7 fixed on it Inside the housing 1 on the axis 3, reinforced shchestren 8, coupled with the bristles 9, fastened on the axis 10, carrying the winding thread drum 11. The winding thread of the drum 11 is driven from the crankshaft of the weaving machine (not shown) by the type of friction gear at variable on a manual tachometer.

On the cover 2 of the device, two thread guides of the roller 12 "strain gauge 13 with tongue 14, arrow 15 and roller 16 are fastened.

No. 149243-2. During operation, the device with its support platform 17 is installed (mounted on the hook 18 and fixed on it with the help of a screw-screw 19.

To prevent damage to the surface of the shuttle, a plastic 20 washer is mounted on the end of the thumb screw.

The weft thread coming out of the shuttle jig (not shown in the drawing) bends around the guide rollers 12 and roller 16. After passing the rollers, the weft thread is fixed on the drum //.

After filling the weft yarn, the device with the rubber head 7 is pressed against the center of the crankshaft (not shown) of the weaving loom, whereby the rotation of the machine shaft through the 8 w wrench. 9 is transferred to the drum 11, which winds the weft thread, winding it from the spool placed in the shuttle.

The winding speed of the weft yarn on the drum is chosen approximately equal to the speed of the shuttle through the mouth of the warp.

The shaft, moving to the weft thread, moves the roller 16 of the strain gauge 13. Moving the roller 16 causes the rotation of the arrow L5, which, during its movement, captures the arrow 2J and leaves it at its maximum reading, the j4 skewers, indicating the tension of the weft thread. The arrow 21 returns to the initial polishing with the help of a screw mounted on the axis of the arrows 15p21 (not shown in the drawing).

The tension measurement of the weft yarn using the proposed device on a mechanical loom is carried out during the operation of the loom using a spare (second) shuttle, and on the automatic weaving machine to measure the tension of the weft yarn a second hook is selected that is identical to the running shuttle.

Subject invention

Weave tension gauge according to ed. St. No. 113654, characterized in that, in order to simplify the design and the possibility of measuring tension at different weaving yarns, the winding drum thread is driven from the weaving machine's crankshaft by means of a friction drive according to the type of drive used on a handheld gauge 11

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