Multiple-needle lockstitch sewing machine

Abstract

A multiple-needle lockstitch sewing machine comprises a multiple-needle pull-back trolley thread-inserting pull barrel, wherein falling needle holes are formed in presser foots, and the multiple-needle pull-back trolley thread-inserting pull barrel comprises a supporting plate and an installing seat. The left portion of the supporting plate is bent towards the back of the supporting plate along a 45-degree line located on the supporting plate to form a bent portion, and the front side of the supporting plate is provided with a first guiding barrel group, a second guiding barrel group and a third guiding barrel group. The first guiding barrel group comprises a plurality of first horizontal guiding barrels. The second guiding barrel group comprises a plurality of second horizontal guiding barrels. The third guiding barrel group comprises a plurality of third horizontal guiding barrels. The back side of the bent portion is provided with a fourth guiding barrel group and a fifth guiding barrel group. The fourth guiding barrel group comprises a plurality of first vertical guiding barrels. The fifth guiding barrel group comprises a plurality of second vertical guiding barrels. The presser foot between every two falling needle holes is provided with a groove, and the first vertical guiding barrels are aligned to the grooves in the vertical direction in a one-to-one mode. The multiple-needle lockstitch sewing machine can enable multiple threads to be sewn in a formed penetrating barrel and effectively prevent the threads from being tangled, and the production efficiency is greatly improved.

Description

Technical field: [0001] The invention relates to a sewing machine, in particular to a multi-needle lockstitch sewing machine. Background technique: [0002] With the improvement of living standards, people pay more attention to the beauty of decoration, that is, they should be beautiful and easy to wear, except that they are required to have traditional functions of preventing cold and keeping warm and hiding shame. There is a kind of clothes in the prior art, and its placket part has a decorative band from top to bottom, as Figure 7 with Figure 8 As shown, there are many bulging ropes 50 worn on the decorative belt. For this decorative belt, the following method is often used for processing at present. A plurality of parallel stitches 51 with equal distances, after sewing, a threading tube will be formed between two adjacent equal stitches 51, and then the ropes 50 are threaded into the threading tube one by one using tools, and finally the For the processing of the dec...

AI Technical Summary

Problems solved by technology

There is a kind of clothes in the prior art, and its placket part has a decorative band from top to bottom, as Figure 7 and Figure 8 As shown, there are many bulging ropes 50 worn on the decorative belt. For this decorative belt, the following method is often used for processing at present. A plurality of parallel stitches 51 with equal distances, after sewing, a threading tube will be formed between two adjacent equal stitches 51, and then the ropes 50 are threaded into the threading tube one by one using tools, and finally the For the processing of the decorative belt, since the threading barrel is relatively small, it usually takes a lot of trouble to thread the rope 50 into the threading barrel, which takes a long time and the production efficiency is very low

Although there is a tool in the prior art that can simultaneously thread a plurality of ropes 50 into the threading tube, since the distance between the multiple ropes is relatively close after they are pulled out from different reels, Therefore, in the process of threading the ropes, the multiple ropes that have not entered the barrel are easily mixed together, so that the work of threading the ropes cannot be carried out normally.

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