The plastic syringe structure is relatively simple, and […]
The plastic syringe structure is relatively simple, and generally consists of a sleeve, a push rod, a piston, a positioning ring and a protective cap. In addition, plastic syringes are safe to use and can be used in a single dose to effectively avoid cross-infection. Below we mainly introduce the introduction of the main part of the plastic syringe and the core mold.
Jacket Mold: The main part of the syringe is the sleeve. Due to the relatively thin wall thickness, the forming difficulty is relatively high. Through trial and error, the mold structure of “fixed distance double-point gate” is used, and there are two point gates on the end face of the product. At the time of injection, since the flow is uniformly injected into the cavity along the two point gates, the mandrel is not skewed, the residual melt of the gate is small, and the wire is automatically pulled off, thereby improving the appearance quality of the product.
Mandrel mold: The core rod is the second important part of the product. The structure is cross-shaped, and the two-plate mold is used to process the cross ribs by electric discharge. It is also possible to use a plurality of combined structures, which are processed by a wire cutting device to reduce the cross ribs, and then combined after polishing.
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