CN104802383A - Thermocouple protection device for hot runner of injection mold - Google Patents
Thermocouple protection device for hot runner of injection mold Download PDFInfo
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- CN104802383A CN104802383A CN201510132540.XA CN201510132540A CN104802383A CN 104802383 A CN104802383 A CN 104802383A CN 201510132540 A CN201510132540 A CN 201510132540A CN 104802383 A CN104802383 A CN 104802383A
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a thermocouple protection device for a hot runner of an injection mold. The thermocouple protection device comprises a photoelectric coupler, an inductor, a TC (thermocouple), a CPU (central processing unit) chip and a temperature controller, wherein a pin 1 of the photoelectric coupler is connected with a pin 4 of the inductor, a pin 2 and a pin 3 of the photoelectric coupler are both connected with an external positive potential, and the pin 4 of the photoelectric coupler is connected with the CPU chip; a pin 1 of the inductor is connected with an external negative potential, a pin 2 of the inductor is connected with an external circuit I, and a pin 3 of the inductor is connected with the external circuit I through the TC; the CPU chip is connected with the temperature controller and used for controlling the on-off state of the temperature controller; the temperature controller is connected with an external circuit II and controls the on-off state of the external circuit II. The thermocouple protection device is simple in structure, good in reliability and low in cost, can effectively avoid the phenomenon that the TC is burnt when a TC line and a power line are mistakenly connected and can effectively save the production cost and the maintenance cost of enterprises.
Description
Technical field
The present invention relates to injection mold technical field, particularly relate to a kind of electric thermo-couple protector of injection mold hot runner.
Background technology
Injection mold is a kind of instrument producing plasthetics, is also the instrument giving plasthetics complete structure and accurate dimension.Injection mold is made up of dynamic model and cover half two parts, and dynamic model is arranged on the moving die plate of injection (mo(u)lding) machine, and cover half is arranged on the fixed form of injection (mo(u)lding) machine.When injection moulding, dynamic model and cover half close and form running gate system and die cavity, and during die sinking, dynamic model is separated to take out plastic products with cover half.
Hot runner mould is often heated the running channel of traditional type mould or shree plates mold and runner, do not need the brand-new structure of one taking out runner and running channel when each is shaped.Current TOP-TIP, primarily of hot runner manifold, Re Zui, heater, attemperating unit composition.
Attemperating unit is the very important part of TOP-TIP, and the temperature of plastic melt can affect flow behavior during plastic melt filling, and affects the performance of the fineness of surface of plastic products, size and goods.So in injection mo(u)lding processing factories all at present, all want the temperature of Measurement accuracy plastic melt, and the temperature of plastic melt all adopts thermocouple measurement.For the complete TOP-TIP of multi-point mould, each hot mouth has independently heater and thermocouple, mould structure is complicated, thermocouple uses more, number of electrical lines is various and complicated, and due to the electrothermal structure of the hot mouth of TOP-TIP complicated, under the working environment of hundreds of degree Celsius uninterrupted high temperature, hot mouth heater coil, thermocouple is easily aging, frequent needs stop production and keep in repair, the phenomenon of circuit wrong is often there will be in installation and maintenance wiring process, particularly when thermocouple wire and power line wrong, temperature controller start directly will burn out thermocouple, huge economic loss is brought to enterprise.
If there is a kind of device when thermocouple wire and power line wrong, effectively to avoid thermocouple to burn out, immeasurable economic benefit will be brought to enterprise.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of electric thermo-couple protector of injection mold hot runner, this apparatus structure is simple, good reliability, cost are low, can effectively avoid causing thermocouple burnout phenomenon when thermocouple wire and power line wrong.
For solving problems of the prior art, the concrete technical scheme of employing is:
An electric thermo-couple protector for injection mold hot runner, comprises photoelectrical coupler, inductor, thermocouple TC, cpu chip and temperature controller; 1 pin of described photoelectrical coupler is connected with 4 pin of described inductor, and 2 pin of described photoelectrical coupler are all connected with exterior positive electrode gesture with 3 pin, and 4 pin of described photoelectrical coupler are connected with cpu chip; 1 pin of described inductor is connected with exterior negative electrode gesture, and 2 pin of described inductor are connected with external circuits one, and 3 pin of described inductor are connected with external circuit one by thermocouple TC; Described cpu chip is connected with temperature controller, and this cpu chip is for controlling the break-make of temperature controller; Described temperature controller is connected with external circuit two, and controls the break-make of external circuit two.
Preferred technical scheme, 2 pin of described photoelectrical coupler are connected with exterior positive electrode gesture by resistance R80, and 3 pin are connected with exterior positive electrode gesture by resistance R42.By being connected with exterior positive electrode gesture again after resistance, reliability and the security of whole circuit can be strengthened.
By adopting such scheme; the electric thermo-couple protector structure of a kind of injection mold hot runner of the present invention is simple, good reliability, cost are low; effectively can avoid causing thermocouple burnout phenomenon when thermocouple wire and power line wrong, greatly can save production cost and the maintenance cost of enterprise.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the electric thermo-couple protector of a kind of injection mold hot runner of the present invention.
Detailed description of the invention
Below in conjunction with the embodiment shown in Fig. 1, the present invention is further illustrated:
As shown in Figure 1:
A kind of electric thermo-couple protector of injection mold hot runner comprises photoelectrical coupler P817, inductor ZJY-2P11, thermocouple TC, cpu chip, temperature controller HRT; 1 pin of described photoelectrical coupler P817 is connected with 4 pin of described inductor ZJY-2P11,2 pin of described photoelectrical coupler P817 are connected with exterior positive electrode gesture by resistance R80,3 pin are connected with exterior positive electrode gesture by resistance R42, and 4 pin of described photoelectrical coupler P817 are connected with cpu chip; 1 pin of described inductor ZJY-2P11 is connected with exterior negative electrode gesture, and 2 pin of described inductor ZJY-2P11 are connected with external circuits one, and 3 pin of described inductor ZJY-2P11 are connected with external circuit one by thermocouple TC; Described cpu chip is connected with temperature controller HRT, and this cpu chip is for controlling the break-make of temperature controller HRT; Described temperature controller HRT is connected with external circuit two, and controls the break-make of external circuit two.
Its operation principle is: what connect when external circuits one place is thermocouple, external circuits two place connects when being heater, when temperature controller HRT starts shooting, 2 pin of photoelectrical coupler P817 obtain a positive voltage by resistance R80, and 3 pin obtain a positive voltage by resistance R42; 1 pin of inductor ZJY-2P01 obtains a negative voltage, flow to 2 pin, by the thermocouple of external circuit one, again through 3 pin of thermocouple TC, inductor ZJY-2P01 and 4 pin 1 pin to photoelectrical coupler P817, at this moment the lumination of light emitting diode acting in photoelectrical coupler P817, the conducting of phototriode light, i.e. 3 pin of photoelectrical coupler P817 and 4 pin conductings, cpu chip obtains signal, confirm to install correctly, temperature controller HRT will start output voltage electric current, and the heater of external circuits two heats up and heats.
If what external circuits one place connect is heater; and external circuits two place connects is thermocouple; 1, the 2 pin brownouts of photoelectrical coupler P817; light emitting diode does not work, and phototriode does not also work, and cpu chip can not get signal; an alarm signal will be exported immediately; temperature controller HRT no-output voltage, the thermocouple that external circuits two place connects would not burn out, thus is protected.If without this defencive function, temperature controller HRT will export 220V voltage, directly be burnt out by the thermocouple that external circuits two place connects.
This apparatus structure is simple, good reliability, cost are low, effectively can avoid causing thermocouple burnout phenomenon when thermocouple wire and power line wrong, greatly can save production cost and the maintenance cost of enterprise.
The foregoing is only preferred embodiment of the present invention, not in order to limit the scope of the invention, within the spirit and principles in the present invention all, any amendment done, equivalent to replace, be all included within protection scope of the present invention.
Claims (2)
1. an electric thermo-couple protector for injection mold hot runner, is characterized in that: it comprises photoelectrical coupler, inductor, thermocouple TC, cpu chip and temperature controller; 1 pin of described photoelectrical coupler is connected with 4 pin of described inductor, and 2 pin of described photoelectrical coupler are all connected with exterior positive electrode gesture with 3 pin, and 4 pin of described photoelectrical coupler are connected with cpu chip; 1 pin of described inductor is connected with exterior negative electrode gesture, and 2 pin of described inductor are connected with external circuits one, and 3 pin of described inductor are connected with external circuit one by thermocouple TC; Described cpu chip is connected with temperature controller, and this cpu chip is for controlling the break-make of temperature controller; Described temperature controller is connected with external circuit two, and controls the break-make of external circuit two.
2. the electric thermo-couple protector of a kind of injection mold hot runner according to claim 1, is characterized in that: 2 pin of described photoelectrical coupler are connected with exterior positive electrode gesture by resistance R80, and 3 pin are connected with exterior positive electrode gesture by resistance R42.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132540.XA CN104802383B (en) | 2015-03-25 | 2015-03-25 | A kind of electric thermo-couple protector of injection mold hot runner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132540.XA CN104802383B (en) | 2015-03-25 | 2015-03-25 | A kind of electric thermo-couple protector of injection mold hot runner |
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| CN104802383A true CN104802383A (en) | 2015-07-29 |
| CN104802383B CN104802383B (en) | 2019-03-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459373A (en) * | 1994-10-12 | 1995-10-17 | Ham; Byung I. | Mini-fluorescent lamp with automatic on/off |
| CN2689202Y (en) * | 2003-12-24 | 2005-03-30 | 谢帆 | Temperature recorders |
| CN201066457Y (en) * | 2007-06-13 | 2008-05-28 | 曾曙辉 | Temperature controller |
| CN103837793A (en) * | 2014-01-23 | 2014-06-04 | 冶金自动化研究设计院 | Instrument and method for rapidly detecting polarity of temperature-measuring thermal coupler |
| CN204701096U (en) * | 2015-03-25 | 2015-10-14 | 上海怡恺电子科技有限公司 | A kind of electric thermo-couple protector of injection mold hot runner |
-
2015
- 2015-03-25 CN CN201510132540.XA patent/CN104802383B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459373A (en) * | 1994-10-12 | 1995-10-17 | Ham; Byung I. | Mini-fluorescent lamp with automatic on/off |
| CN2689202Y (en) * | 2003-12-24 | 2005-03-30 | 谢帆 | Temperature recorders |
| CN201066457Y (en) * | 2007-06-13 | 2008-05-28 | 曾曙辉 | Temperature controller |
| CN103837793A (en) * | 2014-01-23 | 2014-06-04 | 冶金自动化研究设计院 | Instrument and method for rapidly detecting polarity of temperature-measuring thermal coupler |
| CN204701096U (en) * | 2015-03-25 | 2015-10-14 | 上海怡恺电子科技有限公司 | A kind of electric thermo-couple protector of injection mold hot runner |
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| CN104802383B (en) | 2019-03-01 |
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