Industrial sewing machine sewing machine exercises

First, an empty computer lab

 

Initial phase electric sewing machine learning is empty exercise. Empty first practice phase in the professional and technical personnel and professional guidance of teachers examination, to understand the use of the machine type and machine characteristics, safety procedures before it can be actually empty machine exercises.

1, sitting low to moderate, generally sewers hands on a seat can naturally on sewing machine board as appropriate. Sewing to sit in the seat, feet should be flat on the sewing machine pedal board. In order to facilitate manipulation or foot pedal sewing machine, and will not soon tire, hips and the seat surface proper contact, not only do not sit too full, and do not sit too little. In addition. Skew the body, relying on a single strand of support body center of gravity, or prefer to sit at the back of the seat tilt and back posture, it is not correct. Correct posture should be sitting stool surface hips 2/3 position, impartiality, comfortable and natural. This will not interfere with the feet firmly below when manipulated, does not affect the upper body and hands in action during sewing.

2, before the start of the operation to remove the needle.

3, power outlet.

4, under the sewing machine table plate switch under.

5. Before moving the head side of the presser foot wrench, jumping to the highest point of the presser foot, feed dogs to prevent wear.

6. feet of natural riding in sewing machine drive mechanism operation.

7, the empty machine through repeated practice, the operator will be able to master than the running speed sewing machine, from the slow start to the medium speed, high speed and uniform running smoothly, from high speed to medium speed into slow to stop.

 

Second, the real practice seam stitching

 

Empty repeated practice by the operator to do the foot, hand, eye coordination and control of the three. You can then enter the real practice seam.

(A) paper empty Ji Training

This is the master of manipulation methods on the basis of the sewing machine, on paper do not wear sewn sutures real simulation training, the focus is to make the beginner through Ji paper training, and gradually achieve the hand, foot, eye coordination, both exercises but also save fabric.

1, when the machine sewing machine sewing hand assistance operation, control and sewing direction of flat seam clothes and other items are hand to help control. Machine-assisted methods varied seam hand, under normal circumstances, the general left hand on the left front seam members outside stalls, pinch or pinch the seam slightly pull outwardly; his right hand on the right rear slit member in stalls, thumb under the other four fingers on, pinch the seam piece micro sent forward. So we are following one after the hand sewing pieces can be transferred while sewing sew pieces of edge shift direction. When sewing two or more layers of fabric, due to the lower fabric by the resistance is not the same, the speed of the upper and lower fabric forward delivery is not the same, therefore, prone to sew Ji heartbeat and other quality problems.

2, Ji draw a straight line on the paper are a few straight lines, long or short, and then press lines printed were empty Ji exercises aimed at training the operator Ji line.

3, Ji arc drawn on paper were several arcs, curvature and bending direction size change, then press lines printing practice.

4, Ji geometric paintings on paper sample sizes are rectangular, square, pentagonal, etc., and exercise, aimed at training Ji has a natural angle when angle geometry. Sharp clear.

5, Ji parallel lines drawn on paper are straight, curved parallel lines, spaced a distance ranging from 0.2 ~ 2cm practice, train operator Ji-wire control the distance between the lines, the ability to maintain parallel.

(B) Ji cloth training

Prepare white cotton cloth, cotton cloth and other fabrics thin fraction; in thick wool, synthetic and blended fabrics fraction; thick wool, synthetic and blended fabrics fraction stiffness; sewing thread; coarse, medium and fine variety of models needle; awl, tweezers, scissors and other yarn.

1, straight sewing

Follow these steps:

(1) The first good bottom line is wound, put the bobbin jacket, pulled a thread, into the shuttle bed.

(2) sewing surface and then put on line as required, rotating pulley on the bottom tick off the assembly line at the same time placed under the presser foot.

(3) the edge of the fabric by warp sewing machine to put the front foot.

(4) Adjust the pitch, turn the power switch, the left and right hands were placed around the fabric position, feet tread lightly the brake pedal, straight-line practice.

(5) in sewing to learn to choose and adjust with the method of the presser foot needle type and sewing thread.

Straight sewing should be done straight, flat, homogeneous, accurate.

2, arc Sewing

Sewing thread sewn over the previous arc difficult, primarily by foot, hand coordination, eye three with accurate knowledge of the operation sewn seam allowance.

3, double track stitch sewing up

First practice sewing double track, requiring stitches consistent width from start to finish; then practice three sewing thread and even more lines.

 

Third, simple troubleshooting and Troubleshooting

 

1. Jumper

Reason: The operator inaccurate due to lack of experience in the selection of fabric, needles, thread the match; the needle is not installed positive; or pull the fabric caused by excessive jumper.

Remedy: correct selection and installation needle; natural straight right hand when sewing.

2, break

Reason: mainly in the wound bobbin winder is too full, qualifying unhappy, or on-line on wrong, too much tension, position the needle is not accurate due.

Remedy: To maintain consistency elastic, on-line crossed over the line when the hole to be accurate; installation trunking needle length tolerance towards the machine is left.

3, needle

Reason: unskilled operator when pulling the fabric too hard cause.

Remedy: With face natural forward.

 

Fourth, the sewing machine Safety Precautions

 

(1) must comply with the basic safety measures;

(2) must be trained on sewing equipment performance, characteristics, methods of operation have a more comprehensive learning and understanding;

(3) all safety devices should be checked prior to use;

(4) During the installation the needle, replace the needle, presser foot, needle plate, feed dog, curved needle, bobbin or repair, you should immediately turn off the power;

(5) leaving the machine or the workplace should turn off the power;

(6) When using the clutch motor, wait until the motor completely stops before conduct;

(7) oil, lubricants and other liquids used sewing machines and attachments inflows eyes or touches the skin immediately wash;

(8) the prohibition of parts or devices touch the machine is powered by hand;

(9) For industrial repair, alteration, adjustment of the principal organs of sewing machine and sewing machine package by the specialized technical personnel to carry out;

(10) general maintenance performed by hand;

(11) Repair in electrical aspects of electrical technicians should be carried out under the supervision and guidance;

Should be regularly cleaned (12) during the sewing machine;

(13) In order to properly secure operation, you should install the ground. At the same time should not be used under strong noise sources such as high-frequency welding machine environment;

(14) the power plug installed by hand;

 (15) Industrial sewing machine, sewing machine package can not be used outside the specified purposes.