Electronic needle selecting mechanism of passive multi-arm device

Abstract

An electronic needle selecting mechanism of a passive multi-arm device belongs to the technical field of textile machine and comprises a signal supply device and an execution device that consists of a first transverse needle and a second transverse needle; the signal supply device comprises a bracket, a group of electromagnetic valves and a group of transverse needle actuating devices; the amount of the group of the electromagnetic valves is equal to the total amount of the first transverse needles and the second transverse needles; all electromagnetic valves are arranged in the length direction of the bracket and used for actuating the transverse needle actuating devices; the amount of the group of the transverse needle actuating devices is equal to the total amount of the first transverse needles and the second transverse needles; and all transverse needle actuating devices are arranged on the bracket, connected with the electromagnetic valves and matched with the first transverse needles and the second transverse needles, thus actuating the first transverse needles and the second transverse needles. The electronic needle selecting mechanism prolongs the service life of the signal supply device, can ensure working reliability, stability and adaptability of the signal supply device, is beneficial to reducing usage cost, and simplifies the whole structure.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to an electronic needle selection mechanism of a passive dobby device. Background technique [0002] Negative dobby device is a kind of executive device used in the weaving process of medium and low speed looms to complete the heald frame opening movement. The needle selection mechanisms of the negative dobby used in the prior art are all mechanical needle selection mechanisms, and its working principle and main or relevant moving parts are composed of image 3 As shown: the applicant first explained the concept of needle selection. The so-called needle selection means that the needle selection mechanism controls the rise or fall of the long vertical needle 5a and the short vertical needle 5b, so that the upper hook 6a and the upper broach 7a and the lower hook 6b It meshes with the pull-down knife 7b according to a certain time rule (the time rule can also be ...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned needle selection mechanism of mechanical structure is widely used in passive dobby devices in China and abroad, and has a certain history. The maximum number of loop wefts of the pattern paper 1b of the signal supply device 1 is 900 wefts, as a set of standard The first and second probes 25 and 26 of the mechanical signal supply device 1 each have 20 pieces, and the number of first and second horizontal needles 21 and 22 corresponding to this also has 20 pieces respectively, and they are used as two In the first shedding action, the holding part of the previous shedding movement signal is used to ensure that the shedding direction of the loom can be switched when the shedding direction of the loom is reversed. Plastic (facilitating weaving fabric) is the first choice, and punching the textured paper 1b will inevitably affect the natural strength of the textured paper 1b. The more complex the textured paper 1b, the worse the wear resistance and the shorter the normal service life. Restricted by the maximum number of wefts (900 wefts), the limitations of weavable fabrics are becoming more and more obvious; secondly, the pattern paper 1b is extremely easy to age, and its weather resistance is relatively fragile, so it needs to be replaced frequently, which not only increases the cost of use, but also affects the loom weaving efficiency.

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