DE2101720A1 - Drive for the shop movement of looms - Google Patents

Description

21017? Ω

Applicant:

Emtl Jäger KG

44 Münster, Dahlweg 105

Jr 185

Drive for the shop movement of looms

The invention relates to a drive for the store movement, in particular from Brab.twebsttib.len and looms for production heavier, denser fabrics that require a large drawer impact force, with the drawer movement through on the one hand on the drawer and on the other hand on the stand articulated, caused by an eccentric toggle lever will.

In the weaving mill it is necessary to move the store for the entry of the weft thread or wire, namely in the rear dead position, to enlarge or to interrupt completely. In known wire looms, a delay is the Drawer movement with the help of a powered, on one knee

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lever engaging connecting rod causes (DTPS 286 080 and 204 870). With this type of drive you win for them Looms that run faster today do not have enough time for the insertion of the weft thread or wire. Besides that the smoothness is not satisfactory.

The invention is based on the object of designing the drive of looms for heavy, dense fabrics in such a way that that even when the loom is running faster, one is sufficient for the insertion of the weft thread or wire Delay or interruption in store movement.

The object is achieved according to the invention in that at a drive of the type outlined at the outset as an eccentric drive, a driven, forced guidance for a, preferably is chosen for the articulated part of the toggle lever articulated on the stand, the curve. The invention The drive allows for a very high level of quietness in the shop, which is significantly higher than the level of shop quiet that can be achieved with the known drive is in the order of magnitude of approx. 120 ° crank angle. The greater closeness of the shops is also a problem for those who move quickly Looms ensure a perfect insertion of the weft thread or wire.

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Cam drives for looms are known per se, but such drives alone do not provide those during manufacture heavier, denser tissue required high forces. The known cam drives are also a fast one Subject to Terschleiss. First the combination of toggle lever and driven cam as a drive for the movement of the shop provides the required high stop forces and the protection of the cam drive at the stop. Also wins one with this type of drive also a satisfactory smoothness. The leg of the toggle lever assigned to the drawer can be designed in a manner known per se as a joint, on its leg facing the toggle joint engages a guide crank.

If a so-called groove curve or a so-called bar curve is used, it is necessary to attach the rear joint piece of the toggle lever to assign a Holle supported on the curve. In the case of cams, on the other hand, you can go to make do with a sliding piece made of bronze or a suitable plastic.

It is possible to bring about the return movement of the drawer with the aid of a tension element, such as a tension spring. In this

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2) 01720

Trap is only one with the articulated piece hinged to the stand the toggle cooperating curve provided.

A special embodiment is the one on that Stand articulated legs of the toggle lever an elbow, the free ends of which are against two different curves support, of which the one acting on the leg of the angle piece adjacent to the toggle joint, curve the shutter stop and the curve acting on the other leg causes the retraction process.

In wire weaving in particular, it may be necessary to work with a so-called double lay. This Double impact can be achieved in the drive according to the invention in that the connecting bolt of the toggle joint, based on the stretched position of the toggle lever from the imaginary connecting line shop hinge stand hinge is displaceable beyond the extended position. Is the drive with an arrangement of the connecting bolt at the level of the imaginary connecting line shop hinge - Upright joint provided with the toggle joint in the extended position, this results in the single stroke. If the connecting bolt, however, over the imaginary

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If the connecting line is shifted upwards, this arrangement results in the desired double impact, the from running through the extended position of the toggle lever twice with a single rotation of the drawer movement causing curve results.

Single and double hitting can also be achieved by having an adjustability of the toggle joint provides adjacent role in the direction of the curve, when using an angle piece than on the stand The articulated joint piece of the toggle lever then also requires a changeability of the position of the legs of the angle piece to each other in order to guarantee a play-free running of the rollers on the cam disks and to be maintained, at least if the rollers are in an eccentric position. The changeability of the position of the leg of the Elbow to each other is superfluous if the rollers are stored centrically and for their axis in the legs of the angle piece provides elongated holes on the radius around the upright joint through the ideal position.

In the drawing, the invention is based on a very schematic Execution example explained in more detail.

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01720

Show it: 1 - 6 - Sley, which at 12 on the «non- The fig. and 2 are set for single impact Web lad en-örund frame in the direction of the double th drive in two working positions 209839/0159 " ⁷ " 1 gen, namely Fig. 2 the system in the back dead center, Fig. 3 the system in the front dead position, the fig. to 6 the set for double impact Drive in four work tables, 3 namely Fig. 4th the system in the back dead center » Fig. 5 the system in the front dead center> Fig. the system in the over the front 6th Dead position advanced position, Figl the system in the out of position in Fig. 5 in the front dead position returned position. Shown are only the constructions essential to the invention i
tion elements. At 11 is ( lie shown

arrow A is pivoted.

The pivoting movement of the sley 11 is brought about by the toggle lever system 13, 14/14 *, of which the lever 13 is articulated at 16 at the free end of the sley 11 and the other angle lever 14/14 * at 17 on the loom stand, not shown, in Connection with the driven (18) double cam 19/19 ", of which the cam 19 acting on the roller 141 assigned to the lever arm 14 transfers the sley 11 into the front dead position (FIG. 2) and the roller 141 assigned to the lever arm 14" ^f acting curve 19 'brings the sley 11 back into the rear dead position.

The rollers 141 and 141 * are arranged in relation to one another in such a way that that they are free of play against the firmly interconnected Curves 19 and 19 'are applied.

The lever 13 forming the toggle system and the angle lever 14/14 * are connected by a bolt 21 which is provided in the lever 13 and in the lever arm 14 of the angle lever 14/14 *. Elongated holes 22 reaches through.

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2 ΙΟΊ720

In the case of the arrangement indicated in FIGS. 1 and 2 of the connecting bolt 21 at the lower end of the elongated holes 22, the loom works with the so-called single pile. In the front dead position (FIG. 2), the joint 16, joint 21 and joint 17 are in one plane which the Eüekführung into the rear dead position (Figure 1) takes place.

In the arrangement of the connecting bolt 21 indicated in FIGS. 3 to 6 at the upper end of the elongated holes 22, the loom operates with the so-called double lay. The toggle system 13 »14- / 14 *», starting from the rear dead position (Figure 3) »first passes through the front dead position (Figure 4), the sley 11 hitting a first" time, then the toggle system 13 pivots, Ή / 14 ¹ over the extended position of the lever 13 and that of the lever arm 14 (the plane determined by the joints 16, 21 ·, 17) further up over the amount χ (Figure 5), the sley 11 by a corresponding piece is brought back, whereupon the lever 13 and the lever arm 14 again pass into the dead position (FIG. 6), causing a second stop of the sley 11. This is then returned to the rear dead position (FIG. 3).

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Claims (8)

Applicant: Emil Jäger KG 44 Münster, Dahlweg 105 Jr 185 Claims Drive for the store movement, in particular of wire looms, the store movement being brought about by toggle levers articulated on the one hand to the drawer and on the other hand to the stand and moved by an eccentric drive, characterized in that the eccentric drive has a driven, forced vibration for one, preferably for that on the stand articulated (17), articulated piece of the toggle lever (13, 14) forming curve (19). 2. Drive according to claim 1, characterized in that the eccentric drive is a cam disk (19). 3. Drive according to claims 1 and 2, characterized in that on the articulated on the stand (17) joint piece of the toggle lever (13 »14) a tension element 209839/0159 " ² " 2,3720 engages, against the force of which the toggle lever (13, H) is pushed through by means of the curve (19). 4. Drive according to claims 1 and 2, characterized in that the articulated piece (17) of the toggle lever (13, H) hinged to the stand is an angle piece (14, 14 »), the free ends of which are against two different curves (19 , 19 '), of which the one on the knee lever joint (21, 22) adjacent leg (H) of the elbow (H, H ¹ ) acting curve (19) the Ladenansehlag and acting on the other leg (H') Curve (19 *) causes the Eüekholvorgang. 5. Drive according to claims 1 to 4, characterized in that the connecting bolt (21) of the toggle lever (13, H), based on the extended position of the toggle lever (13, H) from the imaginary connecting line Shop joint - upright joint is displaceable beyond the extended position. 6. Drive according to claims 1 to 5, characterized in that as a support for the leg or legs 2098 3 9/0159 (14, 14 ») of the (17) hinge piece of the toggle lever (13, H) hinged to the stand on the crank (s) (19, 19 ') in or on the hinge piece (14, 14 ^f ) ( 141, 141 ') are seen. 7. Drive according to claim 6, characterized in that the rollers are adjustable in the direction of the curves
are. 8. Drive according to claim 7, characterized in that the rollers are mounted eccentrically. 209839/0159