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Temperature control device of heating system in hot-forming machine for plastic sheet

A technology of temperature control device and thermoforming machine, which is applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problem of increasing temperature measurement signal input points, increasing manufacturing cost of temperature control device, and inability to obtain the temperature of heating bricks. Signal and other problems, to achieve the effect of reducing manufacturing costs, simple and easy operation, and ensuring temperature control accuracy

Active Publication Date: 2007-12-26
SHANTOU MENGXING PACKAGE MACHINERY
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Problems solved by technology

When the number of heating bricks (or partitions) is large, the number of required temperature measurement signal input points increases accordingly, and the manufacturing cost of the temperature control device increases accordingly; especially when the number of required temperature signal input points exceeds the temperature limit of the PLC When measuring the number of input points, the PLC will not be able to obtain the temperature signal of some heating bricks (or partitions), so that the temperature control of this part of the heating bricks (or partitions) cannot be realized.

Method used

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  • Temperature control device of heating system in hot-forming machine for plastic sheet
  • Temperature control device of heating system in hot-forming machine for plastic sheet
  • Temperature control device of heating system in hot-forming machine for plastic sheet

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Embodiment Construction

[0022] As shown in Figure 1, the temperature control device of the heating system of this plastic sheet thermoforming machine includes a terminal 1, a programmable logic controller 2, a temperature measurement input module 3, a temperature sensor 4, a transistor expansion output module 5 and a solid state relay 6, wherein the terminal 1 is connected to the programmable logic controller 2 through the interface; the temperature sensor 4 is connected to the input point of the temperature measurement input module 3; the temperature measurement input module 3 is connected to the programmable logic controller 2 through the interface; the transistor expansion output module 5 is connected with the programmable logic controller 2 through the interface, the output point of the transistor expansion output module 5 is connected with the solid state relay 6, each solid state relay 6 is connected with an output point of the transistor expansion output module 5, the quantity of the solid state...

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Abstract

The invention relates to temperature control equipment for plastic sheet hot-forming machine heating system. It includes terminal, programmable logic controller, at least one temperature measurement input module, at least one temperature sensor, at least one solid state relay set. Each temperature sensor is corresponding with one solid state relay set. Each temperature measuring signal input is corresponding with many temperature control signal outputs. The many outputs can not only control temperature in a whole for the heater, but also can independently adjust the temperature for each area of the heater. Thus the invention can not only precisely control the temperature, but also greatly reduce device manufacturing cost, and has simple operation.

Description

technical field [0001] The invention relates to a temperature control device for a heating system of a plastic sheet thermoforming machine. Background technique [0002] The temperature control device of the vacuum blister forming machine announced by the Chinese patent CN2808528Y is manually set and input a given value from the terminal, and the temperature signal of the heating brick is input by the temperature measurement input module, and then automatically through the programmable logic controller (PLC). Compare and process the above given value with the temperature signal of the heating brick, output the temperature control signal, and automatically control the current flowing through the heating brick through the temperature control output module, thereby automatically adjusting the temperature of the heater to stabilize it within the required range , to realize the automatic control of the temperature of the heating furnace of the vacuum blister forming machine. How...

Claims

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Application Information

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IPC IPC(8): B29C51/46G05D23/20B29C51/42
Inventor 邱耀权
Owner SHANTOU MENGXING PACKAGE MACHINERY
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