SU617019A3 - Loom dobby - Google Patents

Description

FIELD OF THE INVENTION The invention relates to textile machinery and relates to a helix to a weaving machine. A knitted carriage to a weaving machine is known, containing a balance, a hinge fitted with pull hooks, mounted for reciprocating movement with the hooking 1 and with knives taken up with levers that have a fl drive. The disadvantages of this carriage are in the scrap that there is one arresting lever located across the draw hooks, which serves only to hold the hooks and the raised position. The hook is clamped between the ends, falling from a raised position and lowered under its own weight, i.e., without control. The aim of the invention is to increase the reliability of the operation of the helix carriage. This is achieved by the fact that the carriage has additional locking levers on. the number of hooks and the bar mounted for reciprocating, each arresting lever made double-arm, one of the arms of which is mounted with the possibility of contact with the hook, and the second is connected to the bar by means of a spring. The slat is installed with the possibility of express-forward movement by means of a cam mechanism, and the contacting surface of each of the locking levers and draw hooks is made along an arc of a circle. Each of the arresting levers has an additional abutment for a hook, with the abutment surface in contact with the hook being made around the arc of the circle and attenuating from the center of rotation of the arresting lever at a greater distance than the first contacting surface. FIG. I is given a kinematic scheme of a heald carriage; in fig. 2 - pull hook with locking lever; in fig. 3 - location of the hooks in the carriage; in fig. 4 shows an embodiment of an additional locking lever; in fig. 5 is a view along arrow A in FIG. 4 .. The lifting carriage 1 is installed on the wearer 2 weaving machine. The shafts 3 are also mounted on the frame, each of which is set in motion by means of grips 4 connected with the balance 5 of the carriage, which are connected with draw hooks 6

n 7, which periodically interact with the blades 8 and 9, respectively, moving reciprocatingly. A locking lever 10 is installed above each of the exhaust hooks 6 and 7 and communicates with each of them by a shoulder 11, the contacting surfaces of the hook and the lever are made along an arc of a circle. The other arm 12 of the locking lever 10 is connected to the bar 13 by means of a spring 14. The bar 13 is installed with the possibility of reciprocating by means of a cam mechanism consisting of a cam 15 interacting with a roller 16 installed at the end of the lever 17, the other end of which is connected bar 13. D-- restriction of the movement of the arresting lever 10 against its shoulder 12 is set to stop 18.

The shoulder And the locking lever 10 can be removed with an additional stop 19, which also interacts with the hook (Fig. 4). Stop 19 is in contact with the upper edge of the exhaust hook and serves to press the hook when it is lowered.

The lower edge of the extracting hooks 6 and 7 is in contact with the needle 20, which controls lifting and lowering.

Due to the surface of the arm 11 of the locking lever 10 and the hook, made around the circumference, a high hook lift is achieved, and this allows the needle 20 to be completely unloaded. A stop 21 is installed against each end of the balance 5.

The lifting of the shafts is as follows.

During operation of the machine, the device controlling the operation of the needles (not shown in the drawing) lowers the corresponding needle 20. Together with the needle, it lowers and extends to the; hook 6. The lowering of the hook is also facilitated by the force generated by the spring AND when the bar 13 moves and is transmitted the shoulders 12 and 11 of the locking lever 10 of the extracting hook 6. After the hook is fully lowered, it is hooked by the moving rod 8. The hook b begins to move

6 n I

together with the knife and t there is no one end of the balance 5, while the other end of the balance 5 rests on the stop 21, and the movement of the middle of the balance 5 is transmitted to those hammers that raise the hem 3.

Formula

Claims (4)

1. A lifting carriage to a weaving machine, containing a balance, hingedly connected with draw hooks mounted for reciprocating movement when engaged with a knife, interacting with locking levers having a gear that differs from aiming to increase reliability, it additionally has arresting levers for the number of pull-off hooks and a bar, installedH) with the possibility of reciprocating movement, each arresting lever being double-shouldered, one of the arms of the coupling is installed with the possibility of contact. with the hook, and the second is connected to the strap by means of a spring. 2. The carriage according to claim I, characterized in that the bar is installed with the possibility of returning additional movement by means of a cam mechanism. 3.Carette on PP. i and 2, characterized in that the contacting surfaces of each of the locking levers and draw hooks are made along an arc of a circle. 4. The opp cart. I-Z, characterized in that each of the arresting levers provides an additional abutment for the pull hook, with the abutment surface in contact with the hook impressed along the arc of a circle and away from the center of rotation of the arresting lever at a greater distance than the first contact surface. Sources of information taken into account in the examination :. 1. The patent of Switzerland Ka 352291, cl. 860 3, 1961. -1M g skiyu yakkch 0- C VWVWWVi f4t. 9i, .3