Upper and lower die assembly of bottle cover mould pressing machine

Abstract

The invention provides an upper and lower die assembly of a bottle cover mould pressing machine, which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are respectively arranged on an upper template and a lower template, the upper die assembly comprises a die core rod arranged in the upper template, the lower end of the die core rod is connected with a die core, a die core rod internal sleeve and a die core rod external sleeve as well as a positioning sleeve are sleeved outside the die core rod, one side of the die assembly is provided with a pushing rod which is connected with a pushing plate, an idler wheel is arranged on the pushing rod, the top of the upper template is provided with a cam, the idler wheel is matched with the cam, the lower die assembly comprises an oil hydraulic cylinder arranged in the lower template, a piston rod of the oil hydraulic cylinder is connected with a cavity base, and a cavity is arranged on the cavity base. The upper and lower die assembly is characterized in that a cooling water hole is arranged in the die core rod and connected with a water path through a water distributor and a water distributing plug-in connector, a ventilating pipe is arranged in the cooling water hole, and an air outlet is arranged in the die core and communicated with the ventilating pipe; and the bottom of the cavity is embedded with a bottom cover insert, and a cavity sleeve is arranged outside the cavity and connected with the cavity base. Due to the adoption of the scheme, the cooling speed and the production efficiency of the die are improved and the product quality is ensured.

Description

technical field [0001] The invention relates to upper and lower mold components of a bottle cap molding machine, belonging to the field of plastic bottle cap compression molding equipment. Background technique [0002] Plastic bottle cap molding machine, including an extruder for extruding plastic by heating, a molding device for compression molding the plastic into a bottle cap, and a scraper device for feeding the plastic extruded from the extruder to the molding device, which includes a rotating device On the main shaft on the machine base, a turntable is fixedly arranged on the main shaft, and a plurality of molding units are fixedly arranged along the circumference of the turntable. Each molding unit includes a matching upper mold assembly and a lower mold assembly. The ejector pin roller of the component is in rolling contact with the cam; the hydraulic cylinder is arranged under the lower mold component, and the hydraulic cylinder drives the lower mold component to op...

AI Technical Summary

Problems solved by technology

Because the ejector pin roller of the upper mold assembly is directly connected and fixed with the mold rod and the upper die head (mold core), it is impossible to directly cool the mold core

However, the mold cannot be cooled quickly, and the temperature is too high, which will directly affect the quality and production efficiency of compression molded products.

Using the cam to directly eject the bottle cap will damage the internal thread of the bottle cap; on the other hand, the cavity of the lower mold assembly is integral. If the bottom of the cavity, that is, the top surface of the bottle cap needs to be labeled, the entire bottle needs to be replaced. Cavity, high cost, and the entire lower mold assembly needs to be disassembled when replacing the cavity, which is troublesome to assemble and disassemble

Images