JPS6261695B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises two sidewalls of identical construction and two sidewalls supported between them on an axis connecting the sidewalls to each other.
The present invention relates to a two-stage hanging element for a jacquard machine, having two turning pulleys.

Bunk elements of this type are known and are required for the weaving of pile fabrics and as described in German Utility Model No. 74 33 849, for example in two positions (upper shed and lower shed). In a double-acting fully open shed jiacard machine with a
Used to form a double shed with three positions (upper shed, middle shed and lower shed). For example, the Federal Republic of Germany Patent Application Publication no.
The bilevel element known from DE 1119188 and German Utility Model No. 1798196 consists of at least six parts: two side walls, two deflection pulleys and their shafts. When replacing the deflection pulley, a tool is required to remove the small shaft, and each Jiaquard machine has several hundred double hook elements in dense stacks on the sides and front and back, and these need to be replaced when replacing the deflection pulley. Because the elements must be spaced apart from each other, small shafts are easily lost. Known bi-level elements are also not cheap. Because of their required number, they cost about the same as the jacquard machine in which these elements are hung. Furthermore, known bi-level elements made from steel are relatively heavy and are therefore not suitable for high-speed jacquard machines. When these elements hit each other they create an unpleasant noise.

Starting from this, it is an object of the invention to provide a two-tier element with as few individual parts as possible, which can be produced in large quantities at low cost and is easy to assemble.

In double-hung elements of the first type mentioned, this problem is solved because each side wall has an opening configured as a socket in the area of one axis and a projection configured as a plug towards the same side in the area of the other axis. The solution is that two identically designed side walls can be turned to each other by 180° and can be plugged together.

In a practical design, the outer periphery of the socket, which projects from the side wall, can at the same time be constructed as a support for the deflection pulley. Preferably, the socket has a stepped inner diameter, which is larger on the outside than on the inside, and the plug has a suitable conical shape. The plug should have a consistent hole so that the socket plug can be pushed easily.

A further development of the invention provides that the side wall, including the socket and plug, consists of an injection-molded or compression-molded part, preferably made of a wear-resistant, self-lubricating plastic, for example polytetrafluoroethylene. be able to.

If the bilayer element is subjected to high loads, as for example in the weaving of jacquard carpets, the side walls can be extended to provide further sockets and plugs between and outside the bayonet joints that serve as shafts.

The bilevel element constructed according to the invention consists of only four separate parts: two side walls with integrally formed bayonet connections and two deflection pulleys. The construction of these individual parts allows them to be manufactured in large quantities and inexpensively from injection molding materials or plastics with suitable physical properties. Assembly of the individual parts is simple. Finally, the bilevel element of the invention made of plastic has the advantage that it is very light and therefore can also be used in high-speed double-acting fully open shed jacquard machines and no longer produces noise when passing.

Further details, features and advantages of the invention include:
It will become clear from the following description of the accompanying drawings, which schematically show examples of application and bi-level elements.

Above the vertical needle bottom plate 2 of the jiacard machine 1, there are a plurality of U-shaped vertical needles 3a, 3b; 4a, 4b; 5a, 5.
b are provided and are connected to each other in pairs via double bonding pieces 6, respectively. Each double coupling piece 6 is connected to a double hooking element 7 with an upper deflection pulley 8 and a lower deflection pulley 9. Each double-layered element 7
A double joint piece 6 is wound around the upper turning pulley 8 of each double-layered hanging element 7, and a thread 10 is wound around the lower turning pulley 9 of each two-stage hanging element 7.
The upper end of the thread 10 is fixed to the lower end of the two-stage hooking element 7. The lower end of each thread 10 is a warp thread 1 as is known in the art.
3, 13a, and 13b. Warp 1
3, 13a, and 13b are pulled out from a shrink roll (not shown) through a partition 14, pass through a reed 28, and the woven fabric is wound up into a thousand rolls (not shown) through a breast beam 15.

Vertical needles 3a, 3b; 4 in Jacquard machine 1
a, 4b; 5a, 5b are moved by two knife boxes 16, 17 which are moved in opposite directions by a drive device (not shown). Vertical needles 3a, 3b to be raised or lowered; 4a, 4b; 5a,
5b is selected via a needle selection mechanism consisting of a horizontal needle 18, an auxiliary horizontal needle 19, a pressing grid 20, and an auxiliary vertical needle (not shown) controlled by a paper card. When the auxiliary horizontal needle 19 is captured in the movement trajectory of the pressing grid 20 by the auxiliary vertical needle that did not find the hole in the paper card, the vertical needles 3a, 3b; 4a, 4b; 5a, 5b are selected accordingly. is bent out of the trajectory of movement of the individual knives in the knife boxes 16, 17 via the auxiliary cross needle 19 and the corresponding cross needle 18. Vertical needles 3a, 3b;
In order to be able to precisely determine the position of 4a, 4b; 5a, 5b relative to the individual knives in the knife box 16, 17, these longitudinal needles are guided in their lower region in a guide grid 21.

In the illustrated application, since both the warp needles 3a and 3b rest on the warp needle bottom plate 2, the lower shed 2 together with the corresponding threads 10a and warp threads 13b
form 2. Vertical needle 4b of vertical needle pair 4a, 4b
is lifted to an upper position, so that the corresponding thread 10b forms a middle shed 23 together with the warp threads 13. Since the warp needles 5a and 5b are both lifted to the upper position, the corresponding thread 10c forms an upper shed 24 together with the warp thread 13a. The lifted vertical needles 4b; 5a, 5b are hung by the retaining protrusion 25 on the retaining knife 26, and if these vertical needles are not selected by the needle selection mechanism for the next downward movement of the upper knife box 16, These vertical needles remain in their raised position.

Both knife boxes 16 and 17 in the Jacquard machine 1
The maximum stroke H of can be determined by passing the thread 10 around the turning pulley 9 and the fixed pulley 12.
and is increased by 1.5 times at the upper shed 24. As a result, even in multi-colored pile fabrics, the lower shed 22 and the upper shed 24 can be moved to the extent that the comparatively large shuttle 27 can be taken in and out without damaging the warp threads 13.
becomes possible to open.

Each bunk element 7 has two identical deflection pulleys 8 and 9 as well as two identically constructed sockets 33 and, towards the same side, correspondingly integrally formed plugs 34. It consists of side walls 31 and 32.

The two sockets 33 have outer peripheries which project inwardly from the side walls 31 and 32 and are designed as supports 35 for deflection pulleys 8 and 9. The socket 33 has an opening 36 whose inner diameter on the outside is slightly larger than on the inside. The plug 34 has a suitable conical shape so that it is fixed in the socket 33 under preload after the plug connection. To facilitate the plug-in connection, the plug 34 has a hole 37.

FIG. 4 shows an elongated bifurcating element 7 for heavy loads with two further bayonet connections 39 located between the deflection pulleys 8 and 9 and on the outside.

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

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a double-acting fully open shed jiaquard machine with a two-stage hooking element that produces three shed positions inserted during thread threading; 4 is a longitudinal sectional view of the same two-tiered element in an exploded state, and FIG. 4 is a side view of an extended two-tiered element with a further plug-in connection. 1...Jia card machine, 7...Two-stage hanging element, 8, 9
... Turning pulley, 10a-10c... Threading, 31, 32
...Side wall, 33...Socket, 34...Plug, 35...
Support body, 36...opening.

Claims (1)

Claims: 1. In a bi-level element with two identically constructed side walls and two deflection pulleys supported on axles connecting the side walls to each other between them, each side wall 3
1, 32 have an opening 36 configured as a socket 33 in the area of one axis and a projection 34 configured as a plug 34 towards the same side in the area of the other axis, and two side walls of identical configuration. 31, 32 are
A two-stage hanging element for a jacquard machine, characterized in that it can be inserted and connected by turning each other 180 degrees. 2. Claim 1, characterized in that the outer periphery of the socket 33 protruding from the side walls 31, 32 is configured as a support 35 for the turning pulleys 8, 9.
The two-tiered element described in Section. 3. characterized in that the inner diameter of the opening 36 formed in the socket 33 is larger on the outside than on the inside, and that the plug 34 has a suitable conical shape;
A two-stage hanging element according to claim 1. 4. The two-stage hanging element according to claim 1 or 3, characterized in that the plug 34 has a hole 37. 5. The side walls 31, 32, including the socket 33 and the plug 34, consist of injection-molded or compression-molded parts, preferably made of wear-resistant and self-lubricating plastic, for example polytetrafluoroethylene. , a two-stage hanging element according to claim 1. 6. Bi-leveling element according to claim 1, characterized in that the side walls are extended and a further bayonet connection is provided between or outside the deflection pulleys 8, 9.