Rotary dobby, weaving loom equipped with such a dobby and driving element for such a dobby

A technology for driving elements and actuating elements, applied in the direction of dobby, textile, textile and paper making, etc., can solve the problems of breaking, limiting the performance of the dobby, etc.

Active Publication Date: 2012-02-01
STAUBLI FAVERGES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In fact, this wear limits the performance of the dobby by causing failures such as the ejection of the pawl fingers from the notches at inopportune moments while the main shaft and drive element are still rotating
This stops the movement of the lifting unit in an intermediate position and can cause breakage of some warp threads and defects in the weave pattern being woven

Method used

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  • Rotary dobby, weaving loom equipped with such a dobby and driving element for such a dobby
  • Rotary dobby, weaving loom equipped with such a dobby and driving element for such a dobby
  • Rotary dobby, weaving loom equipped with such a dobby and driving element for such a dobby

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Embodiment Construction

[0028] exist Figure 1-3 The dobby R shown in includes an intermittently rotating main shaft 1 that stops every half revolution. The bushing has bearings 1a equal in number to the number of heald frames or lifting units of the loom. An eccentric 2 fixed laterally to the plate 3 is idly mounted on each bearing 1a. Around each eccentric 2 there is provided a bearing 2a, a connecting piece 4, the free end 4a of which is coupled to a pivot arm 5 which causes the heald frame or lifting unit 6 to move through the link formed by the connecting piece 6a. vertical movement. The heald frame is in figure 1 shown schematically.

[0029] Thus, the loom M is included in figure 1 Shown on the left is a dobby R with a plurality of heald frames such as 6, each heald frame 6 is vertically oscillated by means of a rod 5, as indicated by the double arrow F1, which is itself connected by a connecting piece 4. move.

[0030] The longitudinal geometric axis of axis 1 is defined by the X 1 me...

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PUM

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Abstract

The invention discloses a rotary dobby, each lifting unit of which including movable coupling member supported by plate. The driving element (7) has two notches located in relative positions on diameter, used to receive the finger part (81) of coupling member. The finger part (81) can contact with the edge (721,722) of the notch which the finger part joints with on the first interface(I1) and the second interface(I2). The motivity(F5) used to rotate the said plate is transferred to the movable member through the first interface, and the force(F6) used to brake the said plate is transferred to the movable member through the second interface. The height(H2) of the second interface(I2)'s orthogonal projection(I'2) on the equidistant line(B1) of finger part(81)'s flank or the equidistant line(B2) of the notch(72)'s edge (721,722) is greater than the height(H1) of the first interface(I1)'s orthogonal projection(I'1) on the same equidistant lines(B1, B2).

Description

technical field [0001] The present invention relates to a rotary dobby for operating a heald frame mounted on a loom and a loom equipped with such a dobby. The invention also relates to a drive element belonging to such a dobby. Background technique [0002] EP-A-0 851 046 discloses a technical solution in which the dobby is provided with an oscillating part for each of its hoisting units, which is coupled to the heald frame and is idly mounted on the main shaft of the dobby Associated with the eccentric device on. The movable pawl is used to connect the plate fixed to the eccentric and carrying this member to a disk-shaped drive element, which is itself fixed non-rotatably relative to the main shaft of the dobby. For this purpose, the drive element is provided with two diametrically opposite notches, each capable of receiving a finger belonging to the pawl. The side of the finger bears on the edge of the notch in which it engages, so that the plate can be driven or brake...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03C1/00D03C1/16
CPCD03C1/00D03C1/14D03C1/144
Inventor 让-皮埃尔·帕热斯
Owner STAUBLI FAVERGES SA
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