SU69901A1 - Double edging scissors for automatic looms - Google Patents

Description

The invention relates to double-edging scissors for automatic weaving machines and is aimed at creating a stable, durable mechanism ensuring the development of high-quality edges.

The proposed scissors have the peculiarity that for controlling when changing the spools the clutch of the spring-loaded scissors engine by means of intermediate links, a lever is used connected to the start roller by means of a sliding key, which interacts with another lever when the hook is hooked with a padded side.

FIG. 1 is a side view of the activation mechanism; in fig. 2 shows a mechanism for engaging and driving from the front; in fig. 3 is a side view of the shears with a detached cover and FIG. 4 - view of the shparutki and scissors from the side.

In the open guide slot of the bracket 1, a slider 2 is positioned abutting against the bar 3 secured in the vertical slots of the bracket (Fig. 3). The engine 2 is loaded with a spring | 4 between the bottom of the glass 5 and the coupling 6 fixed to the end of the engine (Fig. 4). A pin 7 is embedded in the engine, on which the lever 8 is freely seated. In the lever 8 a pin 9 is fastened and it enters the groove 10 in the scissors cover 11.

Blades 12 and 13 are attached to the engine 2 and the lever 8 by means of screws 14 and guide pins 15. A spring 16 is applied to the ends of the blades, laid under pin 15.

Fork 18 is loosely seated on the forks roller 17 of the inclusion (Figs. 1, 2), which surrounds the clutch 6 at the top with pins 19 entering the socket of the clutch; A switching lever 20 is seated on the roller 17 below, connected with it by a sliding key 21.

On the plug 18 is placed a roller 22, on which is fixed a lever and a shoulder 24 with a beak. A hook 25 is loosely seated on the roller 22, which presses the stop 26 to the screw 27 of the lever 23 with a leaf spring 28 fixed to the lever 23.

On fork 18, on axis 29, loose

589

A dog 30 is seated, connected to the sleeve 31 by a spring. The sleeve 31 has a planar process 55, which is affected by the bracket 34 fixed in the lever 20. On the bathe, the lead plate 55 is fixed by means of a bracket. When the bobbin changer is turned on, the switch-on roller 17 rotates from the eccentric of the weft fork fork in the direction indicated by arrow A, and turns the key 20 through the key 21.

The lever 20-jaw 20a acts on the lever 23, turns the roller 22, the shoulder 24 and places the hook 25 to the upper position on the path of the bar 55. The bracket 34 moves away from the planar process 55, allowing the dog 30 to rotate on the axis 29 and fall behind the beak-shaped shoulder 24 When the batane approaches to the rear position, after the bobbin has been blended by an automatic machine and the thread of the bobbin has been pulled by the pull-out strap, the bar 55 at the small angle of rotation of the machine's crankshaft encounters a hook 25 and, through the roller 22, turns the fork 18 relative to the roller 17.

Bilka 18 spiked 19 spikes, clutch b and slider 2 deforms the spring 4 in the direction of arrow B, behind the edge of the fabric. Together with the slider 2 and the trunnion 7, the lever 8 moves. The finger 9 slides along the inclined groove 10 of the scissors cover 11, rotates the p1 stage 5 on the trunnion 7 at a given angle and overlaps the blades 12 and 13, which cut the thread at the edge of the fabric.

When the yoke and strap 55 leaves the rear position, the spring 4 retracts the slider 2 with the clutch 6 and the fork 18 to the initial position. The dog 30 remains in engagement with the kuvoobrazny shoulder 24, since the reverse movement of the inclusion roller 17 by this time has not completely ended, and the bracket 34 does not act on the planar process 55.

Plank 55 leaves the hook 25 until the next approach of the bat to the rear position. Roller 17 including 590

Nor, completing its reverse movement, sets the lever 20 to switch on to the initial, non-working position of the scissors.

Bracket 34, meeting in its path of the planar process 55, turns the sleeve 31 relative to the dog 30, deforming its spring. The dog 30, which is engaged with the kuvoobraznye shoulder 24, can not rotate about the axis 29, as it is affected by its weight hook 25 and the lever 23.

With the subsequent approach of the bat to the rear position, after weft iti with a new inserted spool, the bar 55 meets the hook 25 in its path and sets the movement / reel system into working position, and the blades 12 and / 5 cut the thread.

With the opposite approach, the baton with the strap 55 from the posterior position of the planar process 55 meets the brace 34 on its way; the dog 30 rotates x} with respect to the axis 29, the disengagement from the beak arm 24, and the hook 25 together with the lever 23 falls down, leaving the path of action of the bar 55.

All movement of the scissors stops until the next switching on of the bobbin changer from the switching roller 17.

Subject invention

Claims (4)

1. Double-edging scissors for automatic looms, characterized in that for controlling when changing the spool clutch 6 of the spring-loaded scissors engine through intermediate links, a lever 20 is used connected to the roller / 7 with a sliding tongue and interacting with the lever 23 when grabbing the hook 25 batten 55. 2. The form of the shears according to Claim 1, characterized in that the lever 23 is mounted on a roller 22, carrying a hook 25 and a fork 18, rearranging the coupling b, which is freely seated on the roller 17. 3. Form scissors for pp 1-2, characterized in that the lever 23 is provided with a beak shoulder 24, designed, when the scissors are first turned on, to turn the fork 30 of the pawl 30 belonging to the spring connected to the sleeve 31 by a planar process 33 interacting with bracket 34 mounted on the lever 20. FIG. one 4. The shape of the scissors according to claim 2, wherein the fork 18 is provided with a protrusion cooperating with the belt pad 36 of the bat, in case of a forced retraction of the scissors engine, to its original position, when the start-up roller fails to operate. jYs 69901 FIG. 3 3 9 FIG. four / i -1,. r - rf :.)) -, - - - ..,. . -X .J-4-.