Protection mechanism of horizontal injection molding machine

Abstract

The invention discloses a protection mechanism of a horizontal injection molding machine. The protection mechanism comprises a hinge base, a labor saving lever and a horizontal plate. The hinge base is fixed to a fixed die. The position of the pivot of the labor saving lever is hinged to the hinge base through a rotating shaft. The horizontal plate and a machine tool moving door are fixed. The front end, close to the labor saving lever, of the horizontal plate is bent upwards to form an inclined face. When the machine tool moving door is closed, the machine tool moving door drives the inclined face of the horizontal plate to abut against a force exertion point on a power arm of the labor saving lever and drives the power arm to be overturned downwards. The fixed die is provided with an open slot communicated with a positioning hole of the fixed die. When the power arm overturns downwards to the limiting position, a resistance arm of the labor saving lever and the projection of the positioning hole in the plane where any cross section of the positioning hole is located do not intersect. According to the protection mechanism of the horizontal injection molding machine, assembly of a movable die and the fixed die of the injection molding machine is automatically limited when an operator opens the machine tool moving door, and the accident of risking personal safety of the operator is avoided.

Description

technical field [0001] The invention relates to the technical field of auxiliary devices for injection molding machines, in particular to a protection mechanism for horizontal injection molding machines. Background technique [0002] During the processing of the injection molding machine, the movable mold and the fixed mold are repeatedly closing and opening the mold. After the mold is opened and before the next mold is closed, the operator often needs to check the cavity of the mold regularly to avoid accidents. The product is not completely demolded and stuck on the mold or the remaining material of the runner sticks to the mold, resulting in damage to the mold, etc., and the above process requires the operator to stop the operation, but only rely on the electric control button to control the shutdown of the machine tool The reliability of the injection molding machine is not high. In the case of damage to circuit components or errors in the program, the injection molding ...

AI Technical Summary

Problems solved by technology

[0002] During the processing of the injection molding machine, the movable mold and the fixed mold are repeatedly closing and opening the mold. After the mold is opened and before the next mold is closed, the operator often needs to check the cavity of the mold regularly to avoid accidents. The product is not completely demolded and stuck on the mold or the remaining material of the runner sticks to the mold, resulting in damage to the mold, etc., and the above-mentioned process requires the operator to stop the operation, but only rely on the electric control button to control the shutdown of the machine tool The reliability of the injection molding machine is not high. In the case of damage to circuit components or errors in the program, the injection molding machine may be restarted, which may cause personal injury to the operator on the machine.

[0003] Existing injection molding machines are also equipped with mechanical locking mechanisms for the protection of personal safety of personnel during the maintenance process, but the existing locking mechanisms often require operators to manually open the mechanical locking mechanisms, and the degree of automation is not high. It is also easy for the operator to forget to open the mechanical locking mechanism

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