Embroidery machines

Embroidery machines. When embroidery first started to break away from manual embroidery, it was not an embroidery machine in the true sense, because the embroidery machine at that time used a traditional sewing machine, replaced with a bottom plate with a small round hole, and the sewing machine needle kept going in and out. The upper hand holds the cloth taut with the embroidery frame and moves it back and forth. This kind of embroidery machine is actually a kind of hand embroidery.

Classification

There are many types of computerized embroidery machines with different specifications. At present, there is no unified classification method. Generally speaking, the following classification methods are commonly used:

1. According to the number of heads, it can be divided into single-head and multi-head machines (2-24 heads);

2. According to the number of needles contained in each head, it can be divided into single-needle and multi-needle (3-12 needles);

3. In the form of feeding stretcher, it can be divided into plate type and cylinder type;

4. According to the stitches used in embroidery, it is divided into lock stitch (301 stitches) and chain stitch (101 stitches). Because each model has the number of machine heads, the number of needles, the form of the stretcher and the form of the stitches, these are combined and arranged, and the classification is refined. The embroidery machine type will be a large number, so it can meet different needs. Level, above the same scale, different requirements of customer needs.

Mechanical and Electrical Principles

First use the embroidery CAD software to make a plate, and after generating the pattern, put the discs containing the embroidery program and patterns into the computer disk drive one after another. The electrical signal with equivalent displacement is sent to the X, Y, Z single-chip microcomputer system for motor speed-up and down-speed processing, and then outputs a three-phase six-time signal, and the power amplifier box of the line motor performs power amplification. The stretching frame completes the feed movement between X and Y; at the same time, it drives the Z stepping motor to drive the needle to move up and down, so that the embroidery can continue continuously.

The Z stepping motor drives the transmission mechanism of the machine head to rotate through the synchronous toothed belt. The upper thread bypasses the bobbin case with the bottom thread; the thread take-up mechanism moves to convey the upper thread, tighten the stitches, and prepare the upper thread segment for the next stitch. X, Y stepper motors drive the silk frame and fabrics to move in a plane through mechanisms such as synchronous toothed belts. Send each stitch point to be embroidered on the fabric to the machine needle for embroidery. The speed of the up and down movement of the machine needle and the direction, amount and speed of the stretcher frame move in coordination and coordination, so that the upper thread and the bottom thread are twisted and stitched on the fabric. Make a double bartack stitch. When the embroidery continues continuously, the computer embroidery of the pattern is completed.