Loose piece misplacing and underflow locking device

Abstract

The invention discloses a loose piece misplacing and underflow locking device for a die casting and lost foam forming process, and belongs to the field of automatic control of material processing equipment. The device is characterized by consisting of a loose piece misplacing and underflow detection part and a loose piece misplacing and underflow control part, wherein the loose piece misplacing and underflow detection part consists of a positive thimble positioned in a die substrate, a returning spring, a pressure sensor and a connector; the loose piece misplacing and underflow control part consists of a control circuit and a relay; the pressure signal output by at least one pressure sensor is judged by using the control circuit; when a loose piece is in a misplacing state, the signal is controlled at 0; and the signal is controlled at 1 in a positive state. When positioning detection of more than two dimensions is performed on the loose piece, loose piece misplacing and underflow detection devices of the same dimension are adopted. In the working process of a die, when the detected loose piece is in the misplacing state, the device automatically locks a die assembly main circuit of equipment so that the equipment cannot perform die assembly. The device runs automatically, can ensure the safety and the reliability of the equipment, and is suitable for large-scale popularization and use.

Description

technical field [0001] The invention belongs to the field of automatic control of material processing equipment, in particular to a device for automatically locking a mold clamping switch when various molds with loose blocks are in use when the loose blocks are out of position. Background technique [0002] In industrial production, molds with loose blocks are often designed to process complex parts. The use of loose blocks reflects the flexibility of mold design. This kind of mold is widely used in material processing fields such as metal forming and plastic forming. Molds generally work in high temperature and high pressure environments, such as lost foam casting white mold processing, die casting metal processing and other technological conditions. In production, the loose blocks need to be installed separately, and then the mold clamping action is completed, and the work is repeated in this way. [0003] In semi-automatic equipment, the accurate installation of live bl...

AI Technical Summary

Problems solved by technology

Most sensing devices can only measure one or a limited number of physical quantities, and have certain restrictions on the use environment, which brings difficulties to the design and use of sensing measurement and control technology in special environments, such as high temperature, high pressure, and high corrosion environments.

[0005] Based on the above technologies, it is possible to improve the qualification rate and ensure the safety and reliability of the mold by improving the management and training of operators, but it is impossible to prevent the phenomenon of loose blocks and under-position installation; on the other hand, molds are used in special environments. Including high temperature (over 1000k for die-casting, over 372k for lost foam casting), high pressure (20-50MPa for metal die-casting), and some molds are also designed with channels such as water channels and gas channels, which brings difficulties to the detection of live blocks

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