2results about How to "Fully foamed" patented technology

The utility model discloses a kind of feeding devices of injection molding machine, including sequentially communicating hopper, conveying pipe and material cylinder, the pressure-maintaining cavity for storing material is in the material cylinder, the pusher rod is slidably connected in the pressure-maintaining cavity, the pusher rod is connected with the hydraulic cylinder for driving it to move, the oil circuit of the hydraulic cylinder is connected with the pressure relief valve for maintaining the pressure in the pressure-maintaining cavity, by setting the pressure-maintaining cavity for storing material in the material cylinder, after raw material is conveyed to the pressure-maintaining cavity by conveying pipe, when the pressure in the pressure-maintaining cavity is too large, the pressure in the pressure-maintaining cavity can be kept constant by pressure relief valve, so as to ensure that raw material can be fully foamed in the pressure-maintaining cavity with constant pressure, guarantee the uniformity of raw material foaming, so that subsequent injection into mold forming can well guarantee the quality of product, finally effectively improve foaming uniformity and injection quality.

This application relates to a secondary foaming device for processing foamed materials, comprising several pre-pressurization tanks, a pipeline switching system, a heated foaming chamber, and an extraction and bagging system. The several pre-pressurization tanks are arranged side-by-side, each with a discharge pipe at its bottom. The pipeline switching system includes a slide rail frame, a slider, a telescopic rod assembly, and a quick-connect assembly. The slide rail frame is positioned above the discharge pipe and extends along the direction of the discharge pipe's arrangement. The slider is slidably mounted on the slide rail frame. The telescopic rod assembly is positioned below the slide rail frame. The heated foaming chamber includes a conveying pipe that passes through the slider and has its opening facing the discharge pipe. The conveying pipe is connected to the discharge pipe via the quick-connect assembly. A discharge port is located at the bottom of the heated foaming chamber. A screening device is positioned below the discharge port. The extraction and bagging system is connected to the qualified product outlet of the screening device for extracting and bagging the screened qualified foamed material. This application improves production efficiency during secondary foaming.