Design requirements of zipper machinery


The zipper machine is the name of a kind of equipment for processing zippers. The working principle of the zipper machine is equivalent to using the thrust of a screw (or plunger) to inject the plasticized molten state (that is, the viscous state) into the closed plastic. In the mold cavity, the process of obtaining plastic products after curing and shaping.
So after understanding the working principle of zipper machinery, do you also want to know the design requirements of zipper machinery? Next, the editor will give you an introduction.
Zipper machinery is generally equipped with upper and lower parts. The ejector mechanism of the zipper machine can eject the forging out of the mold cavity in time, reducing the contact time of the forging and the mold cavity, and prolonging the life of the mold. The design of the zipper machine is also convenient for the operator to clamp and take the forging, reducing its labor intensity.
When designing the top piece mechanism of a zipper machine, the following requirements should be considered:
1. The top piece mechanism of the zipper machine must have enough top piece force, usually the upper top piece force takes the nominal pressure of 0.5 to 1 mum, and the lower top piece force takes the nominal pressure of 1.5.
2. The ejector mechanism of the zipper machine must have a certain ejector stroke, and it is hoped that the ejector stroke is adjustable. Usually the zipper mechanical top piece and structure, the upper top piece stroke is (1.5~2.5) slider stroke, and the lower top piece stroke is (2~4.5) bar slide stroke. With pneumatic and hydraulic ejector mechanisms, the ejector stroke can be longer.
3. The top piece mechanism of the zipper machine should be designed reasonably. In order to avoid the collision between the ejected forging and the upper die, the speed of the bottom top piece is required to be lower than the return speed of the slider.
4. In order to make it easy for the operator to clamp the forgings, the top piece mechanism of the zipper 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. Height holder.
Although the products produced by zipper machinery are small, they cannot be ignored in terms of design. Generally, zipper machinery can achieve high-efficiency production for enterprises after normal production, and the operation is simple and fast, and the maintenance is convenient!

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