Action limiting switch of mould

Abstract

The invention discloses an action limiting switch of a mould. The action limiting switch comprises a movable mould base plate (2) which is connected with a machine mould plate (1), an ejecting base plate (3) and a movable mould plate (4) which are connected with the movable mould base plate (2), and an ejecting fixing plate (5) capable of moving transversally which is arranged between the ejecting base plate (3) and the movable mould plate, wherein a switch bracket (7) is connected to the upper end of the ejecting fixing plate (5) by a fastening bolt (6); a metallic shell (8) is arranged at one end of the switch bracket (7); a photo-sensing limiting switch (9) is arranged in the metallic shell (8); the lateral side of the photo-sensing limiting switch (9) is located out of the metallic shell (8); and the metallic shell (8) is further hinged with a protective cover (10) which is matched with the photo-sensing limiting switch (9) in size. The action limiting switch of the mould disclosed by the invention is simple in structure, ingenious in design, and capable of ensuring position precision and eliminating potential safety hazard.

Description

technical field [0001] The invention relates to a limit switch, in particular to a mold action limit switch which is applied in the mold opening and closing action process and can ensure the accuracy and safety of the mold action. Background technique [0002] When casting a workpiece, the movable mold of the mold needs to move relative to the static mold under the drive of the power system to complete the action of mold closing or mold opening. At the same time, there must be an ejector that can eject the workpiece from the mold cavity. Therefore, it is necessary to set a limit switch on the casting molding equipment to monitor whether the moving mold and the ejection action are in place. If the action is not in place, the power system cannot be started to protect the safety of the operator, and at the same time ensure that the workpiece and the mold itself will not damaged. Generally, there are two types of limit switches, mechanical and inductive. Mechanical limit switch...

AI Technical Summary

Problems solved by technology

Generally, there are two types of limit switches, mechanical and inductive. Mechanical limit switches mainly use springs to limit the position, and the spring will produce elastic fatigue after a period of use, resulting in a change in the length corresponding to the limit switch (maximum error It can reach about 10mm), which is easy to cause damage to the mold; and before loading and unloading the mold with the electronic induction limit switch, the operator must press the contact point of the limit switch with one hand to let it sense that the ejector rod is in the return position In this state, the machine tool can perform the action of opening and closing the mold, and the operator can do two things at once, posing a great potential safety hazard

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