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Thread trapper for a gripper head

A yarn gripper and rapier head technology, which is applied in the field of rapier heads, can solve the problems of heating and high power consumption of the yarn gripper, and achieve the effects of reducing power consumption, temperature rise and power consumption.

Inactive Publication Date: 2007-12-19
SULTEX AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this arrangement is that the electromagnet has to be energized in order to keep the gripper open, which leads to undesired heating of the electromagnet and other conductive parts
Thus, even if the opening time of the gripper is relatively short compared to the entire weft feeding cycle, the power consumption of the gripper is relatively high

Method used

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  • Thread trapper for a gripper head
  • Thread trapper for a gripper head
  • Thread trapper for a gripper head

Examples

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Embodiment Construction

[0018] Figure 1 shows a schematic perspective view of a rapier head 1 and a rapier belt of an exemplary embodiment of a yarn gripper of the present invention. The rapier head 1 is connected to a belt 2 movable in the longitudinal direction, and the belt 2 can be moved forward or backward by a belt drive 6 . As shown in FIG. 1 , the belt drive 6 comprises, for example, a peripherally toothed drive wheel which engages with the cutouts of the belt 2 . For the sake of clarity, the belt guides for longitudinally guiding the belt 2 have been omitted. As shown in Figure 1, if the belt is made flexible, it can be guided around the drive pulley.

[0019] As shown in Figure 1 , a gripper may be located in a rapier head 1 comprising, in an exemplary embodiment, a gripping section 4 for forcefully gripping a weft yarn 3, and an actuation for moving the gripping section 4 device 5. For controlling the actuator 5, the clamping section 4 can be connected to the second induction coil 9 dir...

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Abstract

A thread clamp for a rapier head ( 1 ) is presented which contains a clamping part ( 4 ) for firmly clamping a weft thread ( 3 ) and an actuator ( 5 ) for moving the clamping part ( 4 ). The actuator ( 5 ) includes a ferromagnetic core ( 12 ), an armature ( 11 ) and at least one winding ( 13 ) which is arranged on the core or armature in order to produce a magnetic field in the latter and to move the armature and the clamping part, which is operatively connected to the latter, with the core ( 12 ) having two limbs ( 12.1, 12.2 ) between which the armature ( 11 ) is movably arranged, and with each limb being provided with a permanent magnet: ( 14.1, 14.2 ) in order to hold the armature at one of the two rest positions in the current-free state of the winding.

Description

technical field [0001] The invention relates to a gripper for a rapier head and a rapier head with such a gripper, as well as a rapier weaving device with such a gripper or rapier, as described in the preamble of claim 1. machine. Background technique [0002] In a rapier loom, the weft thread is fed into the shed by means of a weft insertion sword mounted on a rod or a flexible belt and brought to the transition point in the center of the shed by means of the weft insertion sword and continued forward. The weft insertion sword has the function of reliably holding the current weft yarn, feeding the weft yarn into the shed and accurately transmitting it to the weft insertion sword. Each rapier includes a rapier head with a gripper for a firm grip on the weft yarn during weft feeding. In automatic grippers, the delivery of the yarn is accomplished by pulling the weft thread into or out of the gripping area of ​​the respective gripper, respectively. In order to produce fabri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D47/00D03D47/23
CPCD03D47/23D03D47/276
Inventor E·克劳伊M·巴克霍芬D·马克沃德
Owner SULTEX AG
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