DE9416017U1 - Double-stroke open pocket jacquard machine - Google Patents

Description

PATENT ATTORNEY KALDENKIRCHENER STR. 35a

DIPL.-ING. M. BONSMANN :*V" ^: *: :": p*4A(iS3 Mönchengladbach

EUROPEANPATENTATTORNEY ·.."I'll&iacgr; * TEtT: töiröl) 12114-FAX: 16296

File: 94 291

Oscar Schleicher

Trompeterallee 192/194, 41189 Mönchengladbach

Double-stroke open-shed jacquard machine

The invention relates to a double-stroke open-shed jacquard machine for weaving machines for producing pile fabrics, with counter-moving lifting knives arranged on knife carriers, and with sinkers that can be carried along by them in an engaged position, whereby the knife carriers have knives of a first knife type with hooking elements provided at a certain equal height for the sinkers and knives of a second knife type with hooking elements and/or knives of a third knife type, the hooking elements of which are relatively movably assigned to the knife carrier of the first knife type in such a reduction or transmission ratio that in one dead center of the lifting movement of the knife carrier of the first knife type they correspond to the height position of the hooking elements of the knives of the first knife type and in the other dead center they assume a height position that is different from the position of the hooking elements of the first knife type.

In such a device, known from DE 41 01 778 Cl, the blades of the second blade type have hooking elements arranged at different heights. The hooking process of the lower hooking elements with the plates takes place during the highest speed of the lifting movement of the blades of the second blade type. During the hooking process of the lower hooking elements of the blades of the second blade type, sudden contact with the

Sinkers experience "hitches" during the highest speed. The invention is based on the object of improving the known, initially mentioned double-stroke open-shed jacquard machine in such a way that "hitches" during the hooking process of the lower hooking elements of the second type of knife are reduced or completely avoided.

To achieve this object, the invention provides that the knives of the second knife type are divided into upper and lower individual knives, each of which carries out a lifting movement separately, and the upper and lower individual knives each have hooking elements and the hooking elements of the upper individual knives and the hooking elements of the lower individual knives are arranged at different heights, and the lower individual knives of the second knife type are assigned a lifting movement device which generates a lower lifting speed and lifting height compared to the lifting movement device for the upper individual knives of the second knife type.

In an expedient embodiment of the invention, the lifting movement device assigned to the lower individual knives of the second knife type is designed so that its lifting speed corresponds approximately to half the lifting speed of the upper individual knives of the second knife type, and the lifting height of the lower individual knives of the second knife type corresponds approximately to half the lifting height of the upper individual knives of the second knife type.

The advantage here is that the hooking process of the plates with the lower hooking elements of the knives of the second knife type now takes place at a significantly lower movement speed of the hooking elements compared to the prior art, whereby impacts occurring during the hooking process are reduced or avoided.

Claims (2)

· Protection claims l. Double open-shed jacquard machine for weaving machines for the production of pile fabrics, with counter-moving lifting knives arranged on knife carriers, and with plates that can be taken along by them in an engaged position, whereby the knife carriers have knives of a first knife type with hooking elements provided at a certain, equal height for the plates and knives of a second knife type with hooking elements, and/or knives of a third knife type, the hooking elements of which are assigned to the knife carrier of the first knife type in a relatively movable manner in such a reduction or transmission ratio that, in one dead center of the lifting movement of the knife carrier of the first knife type, they correspond to the height position of the hooking elements of the knives of the first knife type and, in the other dead center, assume a height position that is different from the position of the hooking elements of the first knife type, characterized in that the knives of the second knife type are designed to be divided into upper and lower individual knives, each of which carries out a lifting movement separately, and the upper and lower Individual knives each have hooking elements, and the hooking elements of the upper individual knives and the hooking elements of the lower individual knives are arranged at different heights, and the lower individual knives of the second knife type are assigned a lifting movement device which generates a lower lifting speed and lifting height compared to the lifting movement device for the upper individual knives of the second knife type. 2. Double-stroke open-shed jacquard machine according to claim 1, characterized in that the lower individual knives the lifting movement device assigned to the second type of knife is designed such that its lifting speed corresponds approximately to half the lifting speed of the upper individual knives, and the lifting height of the lower individual knives corresponds approximately to half the lifting height of the upper individual knives.