Snap closure is a kind of clothing accessories buttons, we commonly call the spring button, sewing new button. Snap-fasteners are combined with S-shaped springs. They are divided into four parts ABCD from top to bottom: AB parts are called female buckles. The broad sides can be engraved with a hole in the middle and two parallel springs on the side; Called the male deduction, a dot is highlighted in the middle. After the dot is pressed into the hole of the female buckle, it is clamped by the spring, resulting in opening and closing force to fix the laundry.
Bottom three / next three (380#, 633#, 655#) quality points and testing:
(Female buckle) 1. The female buckle should be smooth on the surface, the embossing should be clear and full, and the pattern should be concentric with the surface.
2. The spring distance is parallel, there is no open, no height. The spring is not broken, and the spring fillet cannot be too small.
3. The bottom of the nozzle is flat, and the edges are concentric. The holes are concentric and free of ellipses and burrs.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. Die tensile test.
4 spring fatigue spring test (hand test).
5. Female buckle surface arc gauge measurement.
(Public deduction) 1. The surface of the bead head is full and smooth, without depressions and without ellipses.
2. Pearl head chassis embossing is clear and smooth.
3. No larger glitches.
4. The head of the bead tube stretches smoothly, without cracking, no dark explosion, no obvious slip.
5. Male and female buckles can be turned if they are buckled, but they cannot be stuck and cannot be pulled.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. Die tensile test.
4. Bead shape arc rule measurement.
(bottom buckle) 1. The product does not have a burr.
2. The product chassis and nozzle without oval, smooth surface, smooth and full embossing.
3. The diameter of the stretched pipe is not broken, no dark explosion, smooth stretch, no obvious scratches.
4. The bottom buckle with the public buckle, the root can not squat.
5. The height and size of the jaws should be standard.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. No squats and deformation tests were performed.
Second, the big white buckle (201 #, 202 #, 203 #, 205 #) sewn New Zealand quality points and testing:
(Female deduction) 1. Side can not have dog teeth, high and low side.
2. Embossing should be clear and full.
3. The burr punching can not be large, size control.
4. When crimping, curling cannot be beveled and full transition.
5. Female button curling, total height, outer diameter size should be controlled according to the standard.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. Die tensile test.
(Public deduction) 1. Clip mouth, total height, pipe diameter, anti-pull size should be strictly controlled.
2. The embossed writing is clear.
3. No size, no ellipse, no height and low side.
4. Male and female buckles can be turned if they are buckled, but they cannot be stuck and cannot be pulled.
5. The roundness of the head and the height of the jaw should be standard.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. Die tensile test.
4. Bead shape arc gauge measurement.
(bottom buckle) 1. The product does not have a burr.
2. The product chassis and nozzle without oval, smooth surface, smooth and full embossing.
3. The diameter of the stretched tube is not broken, no dark explosion, smooth stretch, no obvious scratches.
4. At the time of molding, the base of the bottom buckle cannot be squatted.
Detection: 1. Vernier caliper size measurement.
2. Product appearance visual inspection.
3. No squats and deformation tests were performed.
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