Shaft drive system for power loom shafts

A drive system, heald frame technology, applied in textile, heald, dobby, etc., can solve the problems of yarn eye and shaft breakage, pawl wear and so on

Active Publication Date: 2005-03-23
GROZ BECKERT KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increase in working speed therefore leads not only to wear of the pawl but also to breakage of the guide eye and the shaft

Method used

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  • Shaft drive system for power loom shafts
  • Shaft drive system for power loom shafts
  • Shaft drive system for power loom shafts

Examples

Experimental program
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Embodiment Construction

[0029] exist figure 1 A heald frame 1 with a corresponding heald frame drive system 2 is described in . The heald frame 1 is formed by a frame provided with thread guide eyes 95 , which is moved upwards and downwards during operation, as indicated by an arrow 3 . A tie rod 4 is used for the drive, which is connected to the heald frame 1 at two or more points 5 , 6 and forms the output of the heald frame drive system 2 . The heald frame drive system 2 has one or more drive sources, for example in the form of motors M1, M2. These are, for example, electric servomotors, which are connected to the tie rod 4 via a screw drive, a belt drive or another drive which converts the rotation of the motor into a linear movement. As another option, a linear motor, a linear stepping motor, etc. can be applied. In some cases a single motor is sufficient, in other cases two or more motors are necessary.

[0030] The motors M1, M2 are controlled by a control unit C, which is connected to a m...

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PUM

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Abstract

A novel shaft gear for harmonious engagement and disengagement of individual heddle shafts and for deriving their motion from the rotary motion of a single input shaft has a coupling system with two input elements. While one of the input elements serves to drive the output element of the coupling system permanently, the other input element serves solely to synchronize the output element briefly with the first input element. The switchover takes place in the brief synchronous phases, in selected angular regions that correspond to the top or bottom reversal point of the heddle shaft. For the switchover, such novel shaft drive mechanisms do not require any stoppage of motion for the input shaft or the shaft drive mechanism.

Description

technical field [0001] The invention relates to a heald frame drive system for at least one heald frame of a power loom. Background technique [0002] In order to form the shed, generally a plurality of heald frames are arranged on the power loom, which each have a plurality of heddles arranged parallel to one another, through which the warp threads are guided through their guide eyes. To form the shed, the heald frame is moved back and forth rapidly. For this purpose, heald frame drive systems are used, which are known as dobby force looms or eccentric force looms. The so-called eccentric force weaving machine is based on the rotational movement of a drive shaft, which produces a reciprocating movement of the heald frame and at the same time can achieve high weaving speeds. However, this eccentric force loom is inflexible. There are only limited possibilities for producing graphic patterns or different textures. Therefore, heald frame drive systems are widely used when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03C1/14D03C13/00
CPCD03C13/00D03C1/14D03C13/025D03C1/144D03C9/0683
Inventor J·布鲁斯克B·明斯特A·费勒
Owner GROZ BECKERT KG
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