JPS6261694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vertical needle for a jacquard machine, in which the vertical needle is connected at the base with a plastic connecting piece integrally injection-molded, and the bottom plate for the vertical needle has a guide hole for the connecting piece. and a bottom plate for vertical needles that is compatible with this.

German Utility Model No. 71 08 172 discloses a device for connecting the warp needle of a jacquard device with a passing thread, the device being bent from a wire and integrally injection-molded with a connecting piece made of plastic at the base. It consists of a double-legged vertical needle and a connecting piece guide hole provided in the bottom plate for the vertical needle. The contact surface between the base of the vertical needle and the bottom plate for the vertical needle is configured to be flat, and is perpendicular to the guide hole in the bottom plate for the vertical needle.
The vertical needle can only be moved up and down practically perpendicularly to the plane of the vertical needle base plate without hindrance.

This known device cannot be used in double-acting, full-opening jacquard machines. This is because the vertical needle that is moved to the upper shed bends at the upper shed grid, and if you try to keep the vertical needle in the upper shed, the vertical needle will bend on the upper shed grid. This is because the upper shed holding protrusion is stopped. In known devices, the connecting piece can become stuck in its guide hole and break off. Furthermore, in high-speed double-acting, full-opening jacquard machines, instead of a vertical needle bent from wire into a double leg, a vertical needle consisting of a flat bar is used, the greater moment of resistance of which is in the direction of the horizontal needle, but When controlled by the horizontal needle, the vertical needle is tilted over its base on the grid.
This rod-like vertical needle therefore requires a kind of joint at its contact point, which the known device does not have.

Starting from this, the object of the invention is to design a vertical needle and a bottom plate for the vertical needle for use in a double-acting, fully-opening jacquard machine.

For vertical needles and bottom plates for vertical needles of the first type mentioned, this problem is solved as follows. That is, the vertical needle consisting of a flat rod has a base thickened with plastic, this base is rounded toward the narrow end face, and the connecting piece has a flat cross section in the plane of the vertical needle. A trough-like recess for the base of the vertical needle is provided in the bottom plate, and a slit for guiding the connecting piece intersects this recess.

In the actual design, the slit guiding the connecting piece opens outside the recess into a keyhole-shaped enlarged opening through which the vertical needle can be attached or removed.

The vertical needle device constructed according to the invention has the advantage that it can also be used in high-speed double-acting, full-opening jacquard machines. This is because the thickened and rounded base forms a precise rotational joint with the trough-like recess in the bottom plate of the vertical needle, and when the connecting piece is deflected at the upper shed grate it deflects into the slit. Because you can enter
This is because it will not tear even if used for a long time.

Further details, features and advantages of the invention include:
It will become clear from the following description of the accompanying drawing, which schematically shows a vertical needle constructed according to the invention together with a vertical needle base plate.

A vertical needle 1 consisting of a flat bar is connected at its base 2 to a connecting piece 3 which is injection molded in one piece from plastic. The vertical needle 1 has at its upper end projections 4 and 5 which are bent out laterally from its surface and which engage a knife 6 which is raised and lowered. In this case, the vertical needle 1 is brought into and removed from the path of movement of the knife 6 by means of a cross needle 7 of a cross needle operating mechanism (not shown).

In the lower region of the vertical needle 1 there is provided a grate 8 for the upper shed, in which the vertical needle 1 to be moved to the upper shed passes through this grate 8.
If the vertical needle 1 is to be held in the upper shed by passing by the vertical needle 1, the upper shed retaining protrusion 9 of the vertical needle 1 can be stopped on this grid 8.

A vertical needle bottom plate 10 is provided on the surface between the vertical needle 1 and its connecting piece 3, and the vertical needle 1 can be placed on this vertical needle bottom plate 10 at the lower shed. The bottom plate 10 for vertical needles has trough-like recesses 11 extending parallel to the knife 6 at intervals of vertical needles 1, and slits 12 intersect with these trough-like recesses 11 at intervals of vertical needles 1. . These slits 12 open into keyhole-shaped enlarged openings 13.

The connecting piece 3 has an eye piece 14 at its lower end, and a thread 15 is attached to the eye piece 14. This thread 15 is passed through a hole in the bottom plate 16 for the connecting piece.

The thickened base 2 of the vertical needle 1 is rounded towards the narrow end face and together with the trough-like recess 11 forms a precise rotary joint, in which the vertical needle 1 is moved when controlled by the horizontal needle 7. can be tilted around the surface without undue deformation. During the upward movement of the vertical needle 1 into the upper shed, the coupling piece 3 can be deflected into the slot 12 when it is deflected to pass by the upper shed grate 8.

A vertical needle constructed in accordance with this technical teaching, together with a matching vertical needle bottom plate, is suitable for vibration-free, trouble-free and significantly less wear-resistant operation in high-speed double-acting, full-opening jacquard machines.

The new features described above and shown in the drawings are essential to the invention, even if not expressly claimed in the claims.

[Brief explanation of the drawing]

Figure 1 is a side view of the vertical needle as it moves to the upper shed, Figure 2 is a side view of the vertical needle resting on the bottom plate for the vertical needle at the lower shed, and Figure 3 is based on Figure 2. A front view of the vertical needle, and FIG. 4 is a plan view of the bottom plate for the vertical needle as seen in the direction of the - line in FIG. DESCRIPTION OF SYMBOLS 1... Vertical needle, 2... Base, 3... Connecting piece, 10... Bottom plate for vertical needle, 11... Gutter-shaped recess, 12... Slit.

Claims (1)

[Scope of Claims] 1. In a jacquard machine in which a vertical needle is connected to a plastic connecting piece integrally injection-molded at the base and a bottom plate for the vertical needle has a guide hole for the connecting piece, a vertical needle made of a flat rod is used. The needle 1 has a base 2 thickened with plastic, which base 2 is rounded towards the narrow end face, the connecting piece 3 has a flat cross-section in the plane of the vertical needle 1, and the base plate 10 for the vertical needle A vertical needle device for a jacquard machine, characterized in that a trough-like recess 11 for the vertical needle base 2 is provided in the vertical needle base 2, and a slit 12 for guiding the connecting piece 3 intersects with this recess 11. 2 The slit 12 has a keyhole-shaped enlarged opening 1 outside the recess 11.
3. Vertical needle device according to the claims.