Continuous thread supply type rotary shuttle device

Abstract

The invention relates to a continuous thread supply type rotary shuttle device, and solves the problem that the design in the prior art is not reasonable enough. The continuous thread supply type rotary shuttle device comprises a rotary shuttle body, a bobbin sleeve, a thread guide tube and a shuttle rack mandrel. The shuttle rack mandrel is provided with a shuttle rack mandrel threading channel at the circumferential inner side of the shuttle rack mandrel; the thread guide tube penetrates the rotary shuttle body and is inserted into the spindle rack mandrel threading channel; the shuttle rackmandrel threading channel is communicated with a shuttle rack mandrel threading hole / slot arranged in the circumferential outer side of the shuttle rack mandrel; the inner side of one end, corresponding to the rotary shuttle body, of the bobbin sleeve is provided with a hollow mandrel which is cylindrical in shape and which sleeves the circumferential outer side of the shuttle rack mandrel; a split circular thread-discharging hole is formed in the circumferential direction of the bobbin sleeve; a bobbin sleeve mandrel thread slot is formed in the circumferential outer side of the hollow mandrel; both the bobbin rack mandrel threading hole / slot and the bobbin sleeve mandrel thread slot correspond to the split circular thread-discharging hole. The continuous thread supply type rotary shuttle device has the advantage that a shuttle thread of the embroidery machine can be continuously discharged to allow an under thread to be relatively unlimited without changing the under thread, so thatthe labor intensity of operators is greatly reduced, and the production efficiency of the embroidery machine is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of textile equipment, and in particular relates to a continuous thread supply rotary hook device. Background technique [0002] With the development of science and technology, the textile industry also progresses. Wherein the widely used sewing machine is to use one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or sewed up. The perfect cooperation between the rotary hook and the thread take-up lever constitutes the basic elements of sewing machines and embroidery machines. Among the sewing equipment, the sewing equipment with lock stitch is the most common. Most of these sewing equipment use rotary hooks, hook the thread loop with its hook tip, expand the thread loop at the same time, and guide the thread loop around the shuttle Heart to form a lock stitch. [0003] The traditional thread supply rotary hook device ...

AI Technical Summary

Problems solved by technology

[0003] The traditional thread supply rotary hook device used on sewing machines includes a shuttle head, a bobbin and a bobbin case. The bobbin is wound with a limited length of bobbin. Wind the bobbin thread fully, and then install the bobbin full of bobbin thread, but the bobbin thread is wound on the bobbin by a special winding machine. In view of the limitation of the bobbin size, the length of the bobbin thread wound on the bobbin is Limited, when the shuttle thread is used up, it is necessary to replace the bobbin, that is, change the bobbin thread. This is manifested in the multi-head embroidery machine: 1. The operator needs to frequently wind the bobbin thread

2. When one of the bottom threads is used up, the embroidery machine will automatically stop. At this time, the operator needs to replace a batch of bottom threads for the embroidery machine, which greatly affects the production efficiency of the embroidery machine and increases the labor intensity of the operator.

3. Among the replaced bobbins, there are some unused bobbin threads. The operator needs to manually draw the thread, so that the bobbins can be rewound. The work is cumbersome and causes a lot of waste of bobbin thread materials.

4. Although some embroidery machines are equipped with a mechanical bobbin thread changing system, it only replaces the operator to replace the bobbin thread. It only partially reduces the labor intensity of the operator, and the effect of improving the production efficiency of the embroidery machine is not obvious, and the device structure is complicated. , prone to failure, high input cost

[0005] The above-mentioned solution solves the problem that the traditional thread supply rotary hook needs to frequently replace the bobbin to continue the thread to a certain extent, but there are still many shortcomings in this solution, for example, the stability is poor, the bottom thread is easily blocked and entangled, and the product quality is affected

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