Vertical injection molding machine

Abstract

The invention relates to a vertical injection molding machine which is characterized by comprising a control system adopting automatic control, a hydraulic system adopting a hydraulic integrated block, a feeding mechanism which is controlled by a microcomputer and automatically measures the feeding quantity, a glue ejecting mechanism provided with an energy storage punching system, a die assembly with water circulation cooling and a die closing device which adopts a five-hinging point double-curve connecting rod mechanism to control the die assembly to open, combine and lock a die. The vertical injection molding machine has the characteristics of being low in manufacturing cost, high in automation degree, high in working efficiency, large in die locking capability, good in cooling effect, high in part durability, and low in noise, and being safe, reliable, and energy-saving.

Description

technical field [0001] The invention relates to a mechanical device, in particular to a vertical injection molding machine suitable for industrial production of plastic flowers. Background technique [0002] Injection molding machine refers to the method in which the heated and melted material is injected into the mold cavity by high pressure, and after cooling and solidifying, a shaped product is obtained. The basic principle is to use the extrudability and plasticity of plastics to inject molten plastics into plastic product molds under pressure, and cool them to form various desired plastic parts. This method is suitable for mass production of parts with complex shapes, and is one of the important processing methods for injection plastic products. The injection molding process can be roughly divided into the following seven stages: feeding melt and plasticizing, clamping, clamping, injection, and pressure holding , cooling and mold opening. At present, the injection mol...

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Problems solved by technology

[0003] Yet the present inventor finds after market research, and present injection molding machine also has some problems: the one, after this type of injection molding machine has been used for a period of time, due to the wearing and tearing of injection oil cylinder and fixed platen and moving platen, mold clamping and mold locking The action position of the mechanism is not accurate, resulting in the failure of mold clamping (not in place or too much); the mold clamping is not tight or too tight, that is to say, when the machine base is deformed by torsion, the injection tube will correspond to the module There is a slight deviation in the injection position, which causes the misalignment of the injection material and makes the product quality unstable.

Third, due to the high injection pressure of this type of injection molding machine, huge pressure is generated in the mold cavity at the moment of injection. If the clamping force is insufficient, the product will cause flashes, which will affect the quality of the product. Inconsistency in the wear of the upper and lower connecting rods often occurs in the process, which makes the upper and lower mold clamping unbalanced, and finally leads to mold expansion during mold clamping injection molding, which not only produces a lot of noise, but also directly affects the qualified rate of plastic products. , because most of its mold clamping and clamping mechanisms are manual bellcrank mold clamping and clamping mechanisms, which are bulky and laborious to open and close the molds. The force required is very large, the labor intensity of the workers is high, the efficiency is low, and the production cost is high. Moreover, when the mold is opened, due to the existence of the clamping force, the moment the crank throw shrinks from the straight state, the crank throw booster mechanism unloads. The reaction force generated by the pressure makes the movable mold reset quickly. In severe cases, workers are sometimes accidentally pressed to their hands by the mold, causing unnecessary personal safety accidents. The above problems have become the technical bottleneck of this industry.

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