CN208946624U - A kind of two point control hot flow path temperature control card - Google Patents

Abstract

The utility model discloses a kind of two point control hot flow path temperature control card, it includes temperature control card, the wiring board of the temperature control card includes power module, display module, key module, control module, acquisition module and output module, and power module is display module, key module, control module, acquisition module and output module provide DC+5V and DC-5V working power；Display module, key module, acquisition module and output module are connected with control module respectively.The utility model can realize the function of a card control two o'clock, and have a variety of type of alarms, power off disconnected even, the functions such as short-circuit protection.

Description

A kind of two point control hot flow path temperature control card

Technical field

The utility model belongs to temperature control device technical field, and especially a kind of two point controls hot flow path temperature control card.

Background technique

Hot flow path (hot runner) is used in the injection mold, is to the running gate system of injection mold using insulation Or heating means, thermal equilibrium control is carried out to casting hot flow path by temperature controller and heater, makes its plastic melt always It is kept molten by, to avoid generating gating system of material.Hot flow path is an indispensable link in injection molding. The key of hot flow path is to be temperature controller, if temperature control inaccuracy, formed product if will appear various defects.It is common Hot runner controller uses single deck tape-recorder single control mode, and volume is big, and multi-point is at high cost etc..

Utility model content

To solve the above problem existing for common hot runner controller, the utility model provides a kind of two point control hot flow path Temperature control card can control two temperature controlling points simultaneously, reduce cost and save space, structure is simple, and manufacture is easy for installation, at low cost Honest and clean, small in size, good heat dissipation, easy to maintain and temperature display are intuitively accurate.

To achieve the above object, the utility model adopts the following technical solutions:

A kind of two point control hot flow path temperature control card, it includes temperature control card, and the wiring board of the temperature control card includes power module, shows Show that module, key module, control module, acquisition module and output module, power module are display module, key module, control Module, acquisition module and output module provide DC+5V and DC-5V working power；Display module, key module, acquisition module and Output module is connected with control module respectively；Key module provides input set temperature range for user；Acquisition module acquisition passes The mV signal of sensor；The analog signal of obtained electric current is converted to corresponding digital signal and is linearly located by control module Reason, obtains actual temperature value, is sent to display module all the way, and another way obtains difference compared with user's set temperature range, After pid control computation, show that optimal control amount is sent to output module；Display module provides intuitive control for client Temperature and set temperature；Output module by obtained Optimal Control amount be sent in the form of pulse signal it is silicon-controlled come control heating Device.

Further, which uses phase-shifting trigger mode to silicon-controlled, changes and loads having for upper each work done waveform Valid value, the mode that Lai Lianxu slow transits through set temperature adjust heating power.

Further, two groups are carved on the wiring board of the temperature control card to individually enter and output connection, and correspondence is equipped with two The route of group temperature-sensitive system and heating system；Every group of route is individually calculated by PID, and is carried out individually by silicon-controlled Temperature control；Every group of route all has independent fuse.

Further, control module is using PIC16C63A as main control chip.

Further, the size and appearance of temperature control card use the miniature card structure of SURE.

The utility model has the advantages that

1. the function of a card control two o'clock can be achieved in the temperature control card of the utility model, and has a variety of type of alarms, power-off Disconnected even, the functions such as short-circuit protection, adequately protect the sensors such as heater and thermocouple, securely and reliably, suitable for all products, Especially apply widely on multi-cavity mold and the molding of bottle cap mold medical product.

2. the temperature control card of the utility model has shape small, beautiful, and with functions such as overload protections, can reduce wiring board Quantity, using PIC16C63A as main control chip, have multiple digital filtering, pid algorithm, interference it is automatic restore, stablize and The features such as reliably applicability is wide.

Detailed description of the invention

Fig. 1 is the circuit diagram of the control card of one embodiment of the invention；

Fig. 2 is the wiring diagram of the control card of one embodiment of the invention；

In figure: 1- power module, 2- display module, 3- key module, 4- control module, 5- acquisition module, 6- export mould Block.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and examples.

The present embodiment discloses a kind of two point control hot flow path temperature control card, as shown in Figure 1, the wiring board of temperature control card includes power supply Module 1, display module 2, key module 3, control module 4, acquisition module 5 and output module 6, wherein power module 1 includes one A transformer, rectifier bridge, three diodes, two voltage-stabiliser tubes, five filter capacitors and three electricity being made of four diodes Resistance etc. provides DC+5V and DC-5V work for display module 2, key module 3, control module 4, acquisition module 5 and output module 6 Power supply；Display module 2 includes six charactrons, the chip 74HC164 of drive digital tube and eight resistance etc., is mentioned for user For intuitively controlling temperature and set temperature；Key module 3 includes three microswitches, three diodes and three resistance etc., Input set temperature range is provided for user；Control module 4 includes a single-chip microcontroller PIC16C63A, two filter capacitors, four Capacitor, six resistance, a crystal oscillator, three light emitting diodes and a memory 24C16 etc. are a high-performance temperature control Device, it is controlled using micro computer pid algorithm, can check output percentage, loop current value, thermocouple class in use Type, and there is a variety of intelligent measurement defencive functions and soft start function, also there is accurate pid parameter self-setting function, controlling Have temperature control accurate during temperature, uses simple and direct understandable feature；Acquisition module 5 include 16 resistance, four filter capacitors, Four capacitors, a diode, a triode, eight channel number word of a list control simulant electronic switch 4051, one are serially Counter 4040, operational amplifier LF353 and double D trigger 74HC74 etc., it mainly acquires the mV signal of sensor；Output Module 6 includes that a pulse transformer, four diodes, two triodes, two resistance, a capacitor and a relay are opened Close etc., it is mainly output pulse signal to silicon-controlled, SCR control heater.

The working principle of the present embodiment: it when the sensors such as external temperature probe or thermocouple are by temperature change, can produce Raw faint electric current, the current signal is after the channel switch 4051 of acquisition module 5, by operational amplifier LF353 zero-bit Correction and signal amplification, convert using the A/D of double D trigger 74HC74, the analog signal of input are become corresponding Digital signal, because using automatic zero correction function, so the circuit has high fidelity, subsequent digital signal enters The single-chip microcontroller PIC16C63A of control module 4 carries out linear process, obtains actual temperature value, send the number of display module 2 all the way Pipe displays temperature value, another way and temperature range set by user (in order to control temperature range, pass through the key module of temperature control card 3 one temperature range of setting) compare, it obtains difference, after pid control computation, show that optimal control amount goes control to heat Switching on and off to reach control temperature range for device, reaches ideal control effect.

As shown in Fig. 2, being carved with two groups of wiring on the wiring board of this temperature control card, and two groups of temperature-sensitive systems and heating system are installed The route of system；Every group of route carries out independent temperature control by silicon-controlled, and is individually calculated by PID；And every group of route all has There are the safeguard measures such as independent fuse, plays overcurrent protection function；With a variety of type of alarms, disconnected even, short-circuit protection function is powered off Can, adequately protect heating element and thermocouple, securely and reliably.4 row's digital display screens are provided on the control panel of this temperature control card, Regulating key and power switch, upper row PV display window show that the measured value of controlled device, lower row's SV display window show current setting Value.When putting state into operation, the regulating key (addend key " ∧ " or subtrahend key " ∨ ") on control panel is adjusted, under can be changed The setting temperature of row's setting show value reaches required value, and upper row measures show value and can adjust automatically by feedback and tracking, according to Deviation situation between setting value and measured value passes through each indicator light (three light-emitting diodes after single-chip microcontroller PIC16C63A operation Pipe) indicate the operating condition that each road exports.The temperature accuracy of this temperature control card control plastic solution can reach ± 1 DEG C.This temperature control card is applicable in In various forms of temp.-sensing wires.The size and appearance of this temperature control card use the miniature card structure of SURE.This temperature control card takes care of Shi Yingfang In drying, ventilation and non-corrosive gas place, and environment temperature relative humidity meets technical requirements.

The course of work of the present embodiment is as follows:

Parameter setting can a point secondary parameters be arranged.Common automatic control value Primary parameter setting, Correction and Control quality Pid value, alarming value and manual output valve etc. are secondary parameters setting.

It presses SET+ ∧ key about 3 seconds and passes through then under upper display window prompt into parameter setting table status as needed Addend key " ∧ " subtrahend key " ∨ " modifies to parameter current, can be reserved for modified values by function key " SET ", while under entrance One setting option, until being back to measuring state.

Measuring state must be back to after parameter setting immediately, before otherwise certain time instrument can automatically return to modification excessively State (value of current set parameter item is invalid, and control card is still controlled by last time setting value).

When needing to change controlling value, function key " SET " is pinned about three seconds, the upper main display window of row becomes " SU " symbol Number, a certain number of lower row's pair display window starts to flash, at this time respectively flicking increasing key, reducing key, shifting bond(s) (if there is movement Key) controlling value can be modified.After setting controlling value, then function key " SET " is clicked, controlling value is remembered by control card, controls Fabrication starts to automatically adjust by newly-installed major loop controlling value.

Difficulty is had much in the correct setting of certain special occasions, pid parameter, selection " AT " can be joined in secondary parameters setting It is that " ON " exits parameter list again that number, which presses " ∧ " key modification " OFF ", can enable this instrument intelligent PID parameter self-tuning function, make " AT " lamp on instrument face plate is bright, and by control value after vibrating three times, " AT " lamp goes out, thus instrument calculates ideal pid parameter value, And persistence, booting need not carry out again Self-tuning System later.Due to being the control of step-by-step formula when Self-tuning System, when hope is whole When system does not have larger overshoot during fixed, settable Self-tuning System bias, the bias is only to position formula controlling value when adjusting It moves forward.

Show elementary error :≤± 0.5%F.S ± 1 word；≤ ± 1%F.S ± 1 word.Cold junction compensation range: 0 DEG C~ 50℃；Cold junction compensation error :≤± 2 DEG C.Temperature coefficient: within the scope of 0 DEG C~50 DEG C deviate 20 DEG C ± 2 DEG C when≤0.05%/ ℃.Warning output return difference (dead band): 2 or 2.0.Relay contact output: AC250V/5A (resistive load).Driving is controllable Silicon pulse output: amplitude >=3V, width >=40 μ S phase shift or zero cross fired pulse, time 35S ± 5S with soft start.It uses Power supply: default value 280V ± 15%；50Hz/601Hz.Working environment: -5 DEG C of temperature~50 DEG C, relative humidity are no more than 85% Non-corrosive gas occasion.

Limitation to scope of protection of the utility model, those skilled in the art should understand that, in the skill of the utility model On the basis of art scheme, the various modifications or variations that can be made by those skilled in the art with little creative work still exists Within the protection scope of the utility model.

Claims (5)

1. a kind of two point controls hot flow path temperature control card, it includes temperature control card, it is characterised in that: the wiring board of the temperature control card includes Power module (1), display module (2), key module (3), control module (4), acquisition module (5) and output module (6), it is described Power module (1) is the display module (2), the key module (3), the control module (4), the acquisition module (5) DC+5V and DC-5V working power is provided with the output module (6)；The display module (2), the key module (3), institute It states acquisition module (5) and the output module (6) is connected with the control module (4) respectively；The key module (3) is user Input set temperature range is provided；The mV signal of acquisition module (5) the acquisition sensor；The electricity that control module (4) will obtain The analog signal of stream is converted to corresponding digital signal and carries out linear process, obtains actual temperature value, is sent to institute all the way It states display module (2), another way obtains difference compared with user's set temperature range, after pid control computation, obtains best Control amount be sent to the output module (6)；The display module (2) provides intuitive control temperature and setting temperature for client Degree；Obtained Optimal Control amount is sent in the form of pulse signal and silicon-controlled controls heater by the output module (6).

2. two point according to claim 1 controls hot flow path temperature control card, it is characterised in that: the temperature control card is adopted to silicon-controlled With phase-shifting trigger mode, change the virtual value for loading upper each work done waveform, Lai Lianxu slow transits through the mode tune of set temperature Save heating power.

3. two point according to claim 2 controls hot flow path temperature control card, it is characterised in that: on the wiring board of the temperature control card It is carved with two groups to individually enter and output connection, and the corresponding route for being equipped with two groups of temperature-sensitive systems and heating system；Every group of route It is individually calculated by PID, and carries out independent temperature control by silicon-controlled；Every group of route all has independent fuse.

4. two point according to any one of claim 1-3 controls hot flow path temperature control card, it is characterised in that: the control mould Block (4) is using PIC16C63A as main control chip.

5. two point according to any one of claim 1-3 controls hot flow path temperature control card, it is characterised in that: the temperature control card Size and appearance use the miniature card structure of SURE.