Die spraying system

Abstract

The invention discloses a die spraying system. The die spraying system comprises a PLC control module, a human-machine interface, a die-casting machine work state input module, a spraying robot module, a die spraying flow control module and a die cooling water control module. The human-machine interface is connected with the PLC control module through one-way communication. The die-casting machine work state input module is in one-way communication with the PLC control module. The spraying robot module is in both-way communication with the PLC control module. The die spraying flow control module is in one-way communication with the PLC control module. The die cooling water control module is in one-way communication with the PLC control module. According to the die spraying system, the time, from a cold state to a normal production state, of a die casting machine can be greatly shortened, the number of disqualified products can be reduced to the maximum degree, the product yield is increased, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of die-casting spraying, in particular to a mold spraying system. Background technique [0002] The die-casting process uses high pressure to press molten metal into a precision metal mold cavity at high speed, and the molten metal cools and solidifies under pressure to form a casting. The advantage of the die-casting process is that it can manufacture metal parts with complex shapes, clear outlines, thin walls and deep cavities, and the utilization rate of materials is high. In the die-casting process, spraying is a key link. It can effectively avoid the welding of die-casting parts and die-casting molds, make the parts that are easy to wear in the die-casting molds have lubricating properties at high temperatures, and reduce the frictional resistance when the die-casting parts are ejected. Prevent the mold from sticking, and play a cooling role to prevent the die-casting mold from being overheated. [00...

AI Technical Summary

Problems solved by technology

[0003] The existing die-casting mold spraying system often has the following problems: 1. It adopts open-loop control, that is, the spraying time period of the control system to control the spraying device is fixed, and the spraying time cannot be adjusted accordingly according to the temperature change of the mold , the rate of indifference and unqualified products is high, and the spraying amount of the spraying device is also fixed, which cannot be adjusted according to the temperature change of the mold

[0004] 2. The flow rate of the cooling water of the die-casting machine cannot be adjusted according to the working status of the die-casting machine (downtime, continuous production time and the number of die-casting parts). Once the amount of cooling water is too much or insufficient, it will directly affect the molding of the casting, resulting in The increase in substandard products will also reduce the service life of die casting molds

[0005] 3. The temperature detection of existing die-casting machines usually uses temperature sensors, but due to the harsh working environment of die-casting machines, the error of temperature sensor detection is often large, resulting in inaccurate temperature control of die-casting molds

[0006] 4. The nozzle and the paint valve are designed in one piece, and the volume is too large, so the nozzle can only be sprayed on an inclined plane, and the spraying surface of the nozzle in the mold cavity will produce a spraying blind area. Due to the limitation of the mold structure, it is impossible to better form a uniform film on the entire surface of the mold cavity. It will cause poor demoulding or high temperature in the foot area of ​​the mold surface, which will affect demoulding

[0007] 5. The flow adjustment of the paint usually adopts the external structure, and the adjustment of the nozzle flow is extremely inconvenient

[0009] 7. The nozzle and the spraying plate adopt a fixed connection method, and the spraying angle of the nozzle cannot be adjusted as required

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