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 amountof 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 my country 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 The holding part of the previous shedding movement signal in the first shedding action is to ensure the switching of the shedding direction when the shedding direction of the loom is reversed. Plastic (facilitating weaving fabric) is the first choice, and the punching of the textured paper 1b inevitably affects the natural strength of the textured paper 1b. The more complex the textured paper 1b, the worse the abrasion 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 apparent; secondly, textured paper 1b is extremely easy to age, and its weather resistance is relatively fragile. Frequent replacement will not only increase the cost of use, but also affect the loom. weaving efficiency

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