Plastic extruder heating control system

Abstract

The invention discloses a plastic extruder heating control system, which comprises a main control module, a signal conditioning module, a power supply module, a driving module, a current detection module and a unit over-temperature detection module, and the modules are respectively distributed in a heating control unit and a heating driving unit. The plastic extruder heating control system provided by the invention has the advantages of simple structure, cost saving, convenient wiring and precise control. The problems of complex wiring, low standardization, poor operability, poor control precision, low safety and the like in the industry are solved. And moreover, an expansion interface is provided for intelligent and informationized development of equipment in the future, and the difficulty and the cost of upgrading an enterprise to the industry 4.0 are greatly reduced.

Description

Technical field: [0001] The invention relates to a heating control system for a plastic extruder. Background technique: [0002] In the field of plastic machine heating, most manufacturers currently use such figure 1 The same architecture, this circuit has a simple structure and low cost, but it also has many disadvantages for the application of plastic machines: [0003] 1) The protection function is unreliable, and the solid-state circuit breaker is mainly used for protection, and the protection time is too long to cause solid-state damage. [0004] 2) The wiring workload is heavy. A plastic machine usually needs more than a dozen heaters or even more. No matter there are many control lines or power lines, it will increase a lot of wiring workload, and it may cause wiring errors and cause the equipment to not work properly. [0005] 3) Low safety. In the plastic machine industry, there are large dust, high noise and high temperature. This requires that each electrical u...

AI Technical Summary

Problems solved by technology

[0003] 1) The protection function is unreliable, and the solid-state circuit breaker is mainly used for protection, and the protection time is too long to cause solid-state damage

[0004] 2) The workload of wiring is heavy. A plastic machine usually needs more than a dozen heaters or even more. No matter there are many control lines or power lines, it will increase a lot of wiring workload, and it may cause wiring errors and cause the equipment to not work normally.

[0005] 3) Low safety, in the plastic machine industry, there is a lot of dust, noise, and high temperature

This requires that each electrical unit has a higher IP protection capability, but the protection capability of the previous scheme is low, and the dust often causes a short circuit after being damp, causing damage to the equipment, and what is even more frightening is that it sometimes causes a fire, which seriously threatens personal safety.

[0006] 4) Backward technology, poor scalability and poor operability

The current heating system of the plastic machine is controlled by a digital display meter and a potentiometer, which has poor operability. There is no reserved interface for the informatization and standardized management of the factory in the later stage, and it cannot be directly upgraded, which greatly increases the upgrade cost.

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