Design requirements for automatic zipper puller
The automatic zipper puller is the name of a device for processing zippers. The working principle of the automatic zipper puller is equivalent to using the thrust of the screw (or plunger) to plasticize the molten state (that is, the viscous state). The process of injecting plastic into the closed mold cavity and obtaining plastic products after solidification and shaping.
So after understanding the working principle of the automatic zipper puller, do you also want to know the design requirements of the automatic zipper puller? Next, the editor will give you an introduction.
Automatic zipper puller machines are generally equipped with upper and lower parts. The ejector mechanism of the automatic zipper puller can eject the forging out of the mold cavity in time, reducing the contact time between the forging and the mold cavity and extending the life of the mold. The design of the automatic zipper puller is also convenient for the operator to clamp the forgings and reduce the labor intensity.
When designing the top piece mechanism of the automatic zipper puller, the following requirements should be considered:
1. The ejector mechanism of the automatic zipper puller must have sufficient ejector force, usually the upper ejector force takes the nominal pressure of 0.5 to 1 m, and the lower ejector force takes the nominal pressure of 1.5.
2. The ejector mechanism of the automatic zipper puller must have a certain ejector stroke, and it is hoped that the ejector stroke is adjustable. Usually, the machine-type top piece and structure of the zipper head are automatically worn. The stroke of the top top piece is (1.5~2.5) slider stroke, and the stroke of the bottom top piece is (2~4.5) Pa slide stroke. With pneumatic and hydraulic ejector mechanisms, the ejector stroke can be longer.
3. The top piece mechanism of the automatic zipper puller should be designed reasonably. In order to avoid the collision between the ejected forging and the upper die, the lower top piece speed is required to be lower than the return speed of the slider.
4. In order to make it easier for the operator to clamp the forgings, the top piece mechanism of the automatic zipper puller machine also needs to meet certain requirements when designing, that is, after the bottom top piece mechanism ejects the forging, it can stay at its highest position for a period of time. That is, the height holder should be installed.
Although the product produced by the automatic zipper puller is small, its design cannot be ignored. The automatic zipper puller can generally achieve high-efficiency production for enterprises after normal production, and the operation is simple, fast and easy to maintain!