CN201644756U - Die-casting mold multipoint precision temperature control system - Google Patents
Die-casting mold multipoint precision temperature control system Download PDFInfo
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- CN201644756U CN201644756U CN2010201518176U CN201020151817U CN201644756U CN 201644756 U CN201644756 U CN 201644756U CN 2010201518176 U CN2010201518176 U CN 2010201518176U CN 201020151817 U CN201020151817 U CN 201020151817U CN 201644756 U CN201644756 U CN 201644756U
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Abstract
The utility model relates to a die-casting mold multipoint precision temperature control system, which is characterized by comprising a plurality of temperature detecting devices embedded in a mold. Each temperature detecting device is connected with an analog quantity input module via a compensating lead, the analog quantity input module is connected with a central processing unit, the central processing unit is respectively connected with a man-machine interaction interface and a mold temperature controller, the mold temperature controller is provided with a plurality of oil inlet pipes and a plurality of oil outlet pipes, and the oil inlet pipes and the oil outlet pipes are respectively communicated with a plurality of runners on the mold to form a circulating pipeline. The die-casting mold multipoint precision temperature control system is ingenious in structural design, can increase repeatability of mold temperature control during die-casing processes, improves production efficiency, and can be widely used in a temperature control process of die-casting production.
Description
Technical field
The utility model relates to the temperature-controlling system in a kind of die casting production process, particularly about a kind of die-casting mold multi-point precise temperature control system.
Background technology
At present, compression casting is a kind of faster few Special Processes of Metal Castings method of not having cutting of development in the metal working process in modern age, it be with motlten metal at high-voltage high-speed retrofilling casting mold, and under high pressure crystallization and freezing forms the process of foundry goods.High-voltage high-speed is the principal character of compression casting, and pressure commonly used is tens of MPas, and filling speed (ingate speed) is about 16～80 meter per seconds, and it is short that molten metal is filled the time compole of mold cavity, is about 0.01～0.2 second.Owing to adopt this method casting, has the production efficiency height, operation is simple, the foundry goods grade of tolerance is higher, surface roughness is good, and mechanical strength is big, and can save a large amount of machining operation and equipment, therefore advantage such as save material has now become an important component part in China's foundry industry.
Because extrusion process, correctly selecting every technological parameter for use is the decisive factor that obtains premium casting, and mould is the prerequisite that can correctly select and adjust each technological parameter.The Temperature Distribution of mould has influenced the order of solidifying of molten metal in the die cavity, influences crystallization rate simultaneously.And for mould itself, it is subjected to chilling and shock heating when producing repeatedly, is easy to generate the heat fatigue be full of cracks and damages inefficacy.Therefore, the temperature of as far as possible controlling mould not only can improve the qualification rate of product within reasonable range, can also prolong the service life of mould simultaneously.
Conventional mold temperature control method is at mould inside cooling fluid or heating fluid runner to be set, and by the mould temperature control device cooling fluid or heating fluid is controlled by realizing temperature among the runner inflow mould.This temperature control method is fairly simple, and the temperature-detecting device of mould has only a thermocouple usually, can only detect the temperature of a certain position of mould.And thermocouple temperature measurement postpones if having time, and the data of its unprocessed mistake can not be reacted the temperature of mold cavity near surface rapidly and accurately.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of die-casting mold multi-point precise temperature control system, thereby can control fast respectively each regional temperature of mould, to reduce the percent defective that die casting is produced, improve production efficiency and product quality.
For achieving the above object, the utility model is taked following technical scheme: a kind of die-casting mold multi-point precise temperature control system, it is characterized in that: it comprises a plurality of temperature-detecting devices that are embedded in the mould, each described temperature-detecting device connects an analog quantity input module by a compensating wire respectively, described analog quantity input module connects a CPU, and described CPU connects a human-computer interaction interface and a die heater respectively; Described die heater is provided with some oil inlet pipes and some flowlines, and described oil inlet pipe and flowline are communicated with many runners on the described mould respectively and form the circulation pipeline.
Described temperature-detecting device comprises thermometric auxiliary element, thermocouple and infrared pyrometer; Described thermometric auxiliary element comprises a cylindrical tube, and the blind end of described cylindrical tube extends outward a cylinder; Axially be provided with a through hole in the described cylinder, described through hole is communicated with the inner chamber of described cylindrical tube; Axially be provided with two with upper groove on the described cylindrical circumferential wall, described groove one end is communicated with the inner chamber of described cylindrical tube, other end sealing; Be provided with a described thermocouple in described cylindrical each groove, and an end of each described thermocouple is arranged in the described groove on described mold cavity surface, and the other end connects described analog quantity input module by the described compensating wire in the inner chamber that is located in described cylindrical tube; Described infrared pyrometer is arranged on the outside of described thermometric auxiliary element, and its output directly is connected with described CPU, and input connects an end that is located in the optical fiber in the inner chamber of described cylindrical tube; The other end of described optical fiber is connected with photoconductive tube one end in being arranged on described through hole, and the described photoconductive tube other end is concordant with described cylindrical end face.
The inner chamber cross section of described cylindrical tube is hexagon, and the inner chamber catercorner length of described cylindrical tube is greater than described cylindrical external diameter.
Circumferentially being provided with a circle on the described cylindrical circumferential wall is used for described thermometric auxiliary element is threaded in external screw thread in the described mould.
Described photoconductive tube is a sapphire light pipe.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to be provided with thermocouple at each key area of mould respectively, therefore, can measure fast respectively and control, reduce the probability that produces waste product each regional temperature of mould.2, the utility model is owing to be arranged on thermocouple in the mould by a thermometric auxiliary element, and thermocouple does not directly contact diecast parts, therefore, can avoid thermocouple to be corroded by the diecast parts molten metal of high temperature, high pressure, has improved the service life of thermocouple.3, therefore the utility model, can revise the error of thermocouple in measurement owing to adopt the mode that infrared pyrometer is demarcated and the industrial thermocouple thermometric combines that the temperature in the mold cavity is measured control, makes measurement more accurate.4, the utility model is owing to connect the analog quantity input module with thermocouple, and the analog quantity input module connects CPU, therefore, can carry out analytical calculation to the temperature that collects by CPU, to determine temperature control scheme.5, the utility model is owing to be connected CPU with a die heater, the control signal that CPU is determined passes to die heater, adjustment enters the cooling fluid in the mold runner or the flow velocity of heating fluid to die heater according to control signal, in various degree cooling or heating carried out in each zone of mould respectively, therefore, can reach more accurate temperature control effect, prevent mould hot-spot or cold excessively, realize real-time control mold temperature.6, the utility model is owing to connect a human-computer interaction interface with CPU, and the Temperature Distribution of mould can be presented in face of the operator by human-computer interaction interface, therefore, can provide reference for the process that the operator sprays releasing agent.The utility model structural design is ingenious, can improve the repeatability of mold temperature control in the press casting procedure, enhances productivity, and therefore, can be widely used in the temperature control process of die casting production.
Description of drawings
Fig. 1 is the structural representation of the utility model temperature-controlling system
Fig. 2 is the installation site schematic diagram of the utility model temperature-detecting device
Fig. 3 is the structural representation of the utility model temperature-detecting device
Fig. 4 is the structural representation of the utility model thermometric auxiliary element
Fig. 5 is the left view of Fig. 4
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises a plurality of temperature-detecting devices 2 that are embedded in the mould 1, each temperature-detecting device 2 connects an analog quantity input module 4 by a compensating wire 3 respectively, analog quantity input module 4 connects a CPU 5, and CPU 5 connects a human-computer interaction interface 6 and a die heater 7 respectively.Die heater 7 is provided with two oil inlet pipes 8 and two flowlines 9 (only as example, being not limited to this), and oil inlet pipe 8 and flowline 9 are communicated with runner 10 on the mould 1 respectively and form the circulation pipeline.
Shown in Fig. 3～5, temperature-detecting device 2 comprises thermometric auxiliary element 11, thermocouple 12 and infrared pyrometer 13.Thermometric auxiliary element 11 comprises a cylindrical tube 14, and the inner chamber cross section of cylindrical tube 14 is hexagon.The blind end of cylindrical tube 14 extends outward a cylinder 15, and the inner chamber catercorner length of cylindrical tube 14 is greater than the external diameter of cylinder 15.Axially be provided with a through hole 16 in the cylinder 15, through hole 16 is communicated with the inner chamber of cylindrical tube 14.Axially be provided with two elongated grooves 17 (only as example, being not limited to this) on the circumferential wall of cylinder 15, groove 17 1 ends are communicated with the inner chamber of cylindrical tube 14, other end sealing.Circumferentially also be provided with a circle external screw thread 18 on the circumferential wall of cylinder 15, be used for thermometric auxiliary element 11 is threaded in the mould 1.
Be provided with a thermocouple 12 in the groove 17 of cylinder 15, and an end of each thermocouple 12 is arranged in the groove 17 of mould 1 mold cavity surface, the other end connects analog quantity input modules 4 by the compensating wire in the inner chamber that is located in cylindrical tube 14 3.
Infrared pyrometer 13 is arranged on the outside of thermometric auxiliary element 11, and its output directly is connected with CPU 5, is used for the temperature measurement error of each thermocouple 12 is revised.The input of infrared pyrometer 13 connects an end that is located in the optical fiber 19 in the inner chamber of cylindrical tube 14, photoconductive tube 20 1 ends that the other end of optical fiber 19 and is arranged in the through hole 16 are connected, photoconductive tube 20 other ends are concordant with the end face of cylinder 15, and the end face of photoconductive tube 20 diecast parts 21 surfaces then direct and in the mould 1 contact.The infrared ray that diecast parts 21 is sent sends infrared pyrometer 13 to by photoconductive tube 20 and optical fiber 19, thereby sends the surface temperature of the diecast parts 21 measured to CPU 5.
In the foregoing description, photoconductive tube 20 can adopt sapphire light pipe.
Temperature control method of the present utility model adopts the mode that infrared pyrometer is demarcated and thermocouple temperature measurement combines, and it specifically may further comprise the steps:
2) according to different molten metal in mould 1 die cavity, infrared pyrometer 13 is demarcated.
3) thermocouple 12 and infrared pyrometer 13 carry out thermometric to mould simultaneously, when there is error in the temperature of measuring when thermocouple 12 with the temperature of mould 1 mold cavity surface of infrared pyrometer 13 measurements, CPU 5 is as the criterion with infrared pyrometer 13 data of being surveyed, and the measured value of thermocouple 12 is revised.After correction is finished, infrared pyrometer 13 be can unload, and optical fiber 19 and photoconductive tube 20 from thermometric auxiliary element 11, withdrawn from.
4) thermocouple 12 carries out real-time thermometric to mould separately in the press casting procedure, and the temperature signal of detection is input to analog quantity input module 4 by compensating wire 3, and analog quantity input module 4 passes to CPU 5 with the measured value that collects.The target temperature that 5 pairs of detected temperature signals of CPU and engineer set compares, and calculates control signal, determines temperature control scheme.
5) CPU 5 passes to die heater 7 with control signal, die heater 7 according to control signal adjustment enter runner 10 for cooling fluid or heating fluid, and the flow velocity of adjusting cooling fluid or heating fluid, thereby each key area is carried out in various degree cooling or heating respectively, to reach precise dose control effect, make the Temperature Distribution optimum of mould 1.
6) simultaneously, human-computer interaction interface 6 shows the Temperature Distribution of mould 1 by digital display, for the hand spray releasing agent provides reference, workman or manipulator can be with reference to current mold temperatures, in the releasing agent spraying process spraying position and quantity for spray are adjusted, the temperature that makes mould 1 is near target temperature.
The various embodiments described above only are used to illustrate the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement all should not got rid of outside protection domain of the present utility model.
Claims (6)
1. die-casting mold multi-point precise temperature control system, it is characterized in that: it comprises a plurality of temperature-detecting devices that are embedded in the mould, each described temperature-detecting device connects an analog quantity input module by a compensating wire respectively, described analog quantity input module connects a CPU, and described CPU connects a human-computer interaction interface and a die heater respectively; Described die heater is provided with some oil inlet pipes and some flowlines, and described oil inlet pipe and flowline are communicated with many runners on the described mould respectively and form the circulation pipeline.
2. a kind of die-casting mold multi-point precise temperature control system as claimed in claim 1 is characterized in that: described temperature-detecting device comprises thermometric auxiliary element, thermocouple and infrared pyrometer; Described thermometric auxiliary element comprises a cylindrical tube, and the blind end of described cylindrical tube extends outward a cylinder; Axially be provided with a through hole in the described cylinder, described through hole is communicated with the inner chamber of described cylindrical tube; Axially be provided with two with upper groove on the described cylindrical circumferential wall, described groove one end is communicated with the inner chamber of described cylindrical tube, other end sealing;
Be provided with a described thermocouple in described cylindrical each groove, and an end of each described thermocouple is arranged in the described groove on described mold cavity surface, and the other end connects described analog quantity input module by the described compensating wire in the inner chamber that is located in described cylindrical tube;
Described infrared pyrometer is arranged on the outside of described thermometric auxiliary element, and its output directly is connected with described CPU, and input connects an end that is located in the optical fiber in the inner chamber of described cylindrical tube; The other end of described optical fiber is connected with photoconductive tube one end in being arranged on described through hole, and the described photoconductive tube other end is concordant with described cylindrical end face.
3. a kind of die-casting mold multi-point precise temperature control system as claimed in claim 2 is characterized in that: the inner chamber cross section of described cylindrical tube is hexagon, and the inner chamber catercorner length of described cylindrical tube is greater than described cylindrical external diameter.
4. a kind of die-casting mold multi-point precise temperature control system as claimed in claim 2 is characterized in that: circumferentially be provided with a circle on the described cylindrical circumferential wall and be used for described thermometric auxiliary element is threaded in external screw thread in the described mould.
5. a kind of die-casting mold multi-point precise temperature control system as claimed in claim 3 is characterized in that: circumferentially be provided with a circle on the described cylindrical circumferential wall and be used for described thermometric auxiliary element is threaded in external screw thread in the described mould.
6. as claim 2 or 3 or 4 or 5 described a kind of die-casting mold multi-point precise temperature control systems, it is characterized in that: described photoconductive tube is a sapphire light pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201518176U CN201644756U (en) | 2010-03-25 | 2010-03-25 | Die-casting mold multipoint precision temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201518176U CN201644756U (en) | 2010-03-25 | 2010-03-25 | Die-casting mold multipoint precision temperature control system |
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| CN201644756U true CN201644756U (en) | 2010-11-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797634A (en) * | 2010-03-25 | 2010-08-11 | 清华大学 | Die-casting mold multi-point precise temperature control system and method |
| CN102847888A (en) * | 2011-06-30 | 2013-01-02 | 苏州品翔电通有限公司 | Mould temperature sensing structure |
| CN105537561A (en) * | 2015-12-15 | 2016-05-04 | 重庆纽思塔科技有限公司 | Mold spraying control method |
| CN106180640A (en) * | 2016-08-29 | 2016-12-07 | 美诺精密压铸(上海)有限公司 | A kind of die-casting forming die multi-chamber temperature control system and method |
| CN109195728A (en) * | 2016-04-26 | 2019-01-11 | 罗图公司 | The method and apparatus of shell moulded casting metal alloy |
| CN111482574A (en) * | 2020-05-19 | 2020-08-04 | 上海诺信汽车零部件有限公司 | Temperature control system and method |
-
2010
- 2010-03-25 CN CN2010201518176U patent/CN201644756U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797634A (en) * | 2010-03-25 | 2010-08-11 | 清华大学 | Die-casting mold multi-point precise temperature control system and method |
| CN101797634B (en) * | 2010-03-25 | 2012-07-04 | 清华大学 | Die-casting mold multi-point precise temperature control system and method |
| CN102847888A (en) * | 2011-06-30 | 2013-01-02 | 苏州品翔电通有限公司 | Mould temperature sensing structure |
| CN105537561A (en) * | 2015-12-15 | 2016-05-04 | 重庆纽思塔科技有限公司 | Mold spraying control method |
| CN105537561B (en) * | 2015-12-15 | 2019-05-24 | 重庆纽思塔科技有限公司 | A kind of mold spray painting control method |
| CN109195728A (en) * | 2016-04-26 | 2019-01-11 | 罗图公司 | The method and apparatus of shell moulded casting metal alloy |
| CN109195728B (en) * | 2016-04-26 | 2021-01-22 | 罗图公司 | Method and apparatus for shell casting metal alloys |
| CN106180640A (en) * | 2016-08-29 | 2016-12-07 | 美诺精密压铸(上海)有限公司 | A kind of die-casting forming die multi-chamber temperature control system and method |
| CN106180640B (en) * | 2016-08-29 | 2019-02-22 | 美诺精密压铸(上海)有限公司 | Die-casting forming die multi-chamber temperature control system and method |
| CN111482574A (en) * | 2020-05-19 | 2020-08-04 | 上海诺信汽车零部件有限公司 | Temperature control system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20110325 |