CN1909999A - Thermosensor for casting machine and casting machine - Google Patents
Thermosensor for casting machine and casting machine Download PDFInfo
- Publication number
- CN1909999A CN1909999A CNA2005800026231A CN200580002623A CN1909999A CN 1909999 A CN1909999 A CN 1909999A CN A2005800026231 A CNA2005800026231 A CN A2005800026231A CN 200580002623 A CN200580002623 A CN 200580002623A CN 1909999 A CN1909999 A CN 1909999A
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- mould
- temperature
- temperature sensor
- deposite metal
- casting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
- G01K1/10—Protective devices, e.g. casings for preventing chemical attack
- G01K1/105—Protective devices, e.g. casings for preventing chemical attack for siderurgical use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/08—Controlling, supervising, e.g. for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
- B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A thermometer for a casting machine, comprising a protective fitting (22) on which a taper is formed to form leaves at the tip part thereof. The protective fitting (22) is formed of the same material as that of a die. The thermometer also comprises a thermocouple inserted into the protective fitting (22) and connected to the tip part of the protective fitting (22). The protective fitting (22) is fitted to the die so that the tip part thereof can be projected into a casting space formed in the die.
Description
Technical field
The present invention relates to the temperature sensor that is used for directly detecting the deposite metal temperature of casting machine and casting machine.
Background technology
Traditionally, be used for the cylinder head of motor engine for example by the low-pressure casting method manufacturing.JP-B-3201930 discloses the air injection machine of this type.Disclosed casting machine has in this patent documentation: the mould that comprises counterdie and patrix; With the melting basin that is arranged under the mould.And it is designed to pressurize and is stored in deposite metal in the melting basin, passes the cast gate that stalk is supplied to counterdie to force it.
In order to boost productivity, casting machine be automatic from beginning to supply deposite metal to the operating process of opening mould.More specifically, after the operator outwarded winding starting switch, casting machine was based on time of mould and deposite metal temperature computation supply deposite metal (below be called pressing time), with pressurization deposite metal in this pressing time and afterwards it is supplied to mould.The temperature sensor that embeds in the mould detects mold temperature, and another temperature sensor that is arranged in the melting basin detects the deposite metal temperature.Be such length default pressing time: its zone of solidifying that makes after beginning pressing time deposite metal fill mould and deposite metal expands to the bottom to arrive cast gate inside from the top of mould.
In other words, the pressurization of finishing the deposite metal in the past in pressing time allows not solidified metal to flow back into melting basin from cast gate by under the stalk.Cast gate inside is stayed in the deposite metal of only solidifying.In this case, the foundry goods that solidifies in the mould does not have flowability, but it is still enough soft easily to be out of shape when taking out mould.This has reduced mold shape and accuracy to size considerably.Therefore, this casting machine is designed to open mould after the standby time, and foundry goods becomes in this standby time enough firmly can not be out of shape after the pressurization of finishing the deposite metal.Mold temperature when the time cycle of the point of the point from the time of finishing deposite metal pressurization in the time of opening mould (below be called setting time) is based on the pressurization of finishing the deposite metal obtains by calculating.
Summary of the invention
The problem to be solved in the present invention
For the as above casting machine of conventional construction, can not in casting process, detect the temperature of foundry goods, therefore can not finish the pressurization of deposite metal or open mould in mode the most timely according to the actual freezing rate of deposite metal.Therefore, traditional casting machine will pressurize and setting time default long enough with the pressurization of guaranteeing the deposite metal with solidify fully and finish.Therefore this causes the long cycle, thereby has reduced productivity ratio.
These problems can solve by the temperature that the serviceability temperature sensor directly detects foundry goods.In addition, such temperature sensor should be manufactured into the problem that overcomes other, these other problem comprises because the possible breakage of the part that contacts with foundry goods of the heating of deposite metal or the temperature sensor that pressure causes and in the wearing and tearing of opening mould or foundry goods being caused by foundry goods during from mold separation with tear.
Consider foregoing problems and finished the present invention.First purpose of the present invention provides a kind of temperature sensor that is used for casting machine, and it can prevent from the breakage that causes owing to the heating of deposite metal or pressure from easily to remove simultaneously from foundry goods.Second purpose of the present invention is the cycle that reduces casting machine by the serviceability temperature sensor.
The means of dealing with problems
The invention provides a kind of temperature sensor that is used for casting machine, it comprises by making with the mould identical materials: the sacrificial metal device has pattern draft or tapering along its top; And thermocouple, it inserts in the described sacrificial metal device to be connected to its top, and wherein the top of sacrificial metal device is mounted to mould to be projected in the casting space in the mould.
Effect of the present invention
The sacrificial metal device of the temperature sensor that is used for casting machine that is defined in claim 1 and 2 has the same high heat resistance with mould and intensity, and removes from foundry goods with mould.Therefore, the invention provides a kind of temperature sensor that is used for casting machine, it can prevent because the heat of deposite metal or the breakage that pressure causes, and can easily remove from foundry goods, and can not wear and tear and tear opening mould or caused by foundry goods during with foundry goods and mold separation.
In claim 3 of the present invention and 4, temperature sensor is used for directly detecting the temperature than more late deposite metal of solidifying, die cavity place.Stop the supply of deposite metal or open mould during this optimum temperature that allows temperature at foundry goods to arrive to be used to stop the deposite metal supply or open mould.
As a result, in casting machine according to the present invention, can be reduced to as far as possible and be used to cast being used for time of deposite metal supply and setting time (from the stop supplies deposite metal to opening mould) without any the required time of the product of defective.Therefore, this has further improved productivity ratio and has reduced casting cycle.In addition, the present invention allows to detect the deposite metal temperature inside, allows easily to remove from foundry goods after casting process finishes the sacrificial metal device of temperature sensor simultaneously.This makes and can open mould or prevent that the sacrificial metal device is damaged during with foundry goods and mold separation, simultaneously with the temperature of high accuracy detection deposite metal.
Description of drawings
Figure 1A is the perpendicular cutaway view of mould, and temperature sensor wherein of the present invention is installed to this mould.
Figure 1B is the sectional elevation of mould, and temperature sensor wherein of the present invention is installed to this mould.
Fig. 2 is the cutaway view that amplifies, and the temperature sensor that is installed to counterdie is shown.
Fig. 3 is the cutaway view of the amplification of temperature sensor.
Fig. 4 is the flow chart that is used to illustrate the casting machine operation.
Fig. 5 is a coordinate diagram, and how the deposite metal temperature that illustrates in the runner changes.
Fig. 6 A is the sectional elevation that is used for the mould of Gravity casting machines.
Fig. 6 B is the perpendicular cutaway view that is used for the mould of Gravity casting machines.
Fig. 7 A is the sectional elevation that is used for the mould of Gravity casting machines.
Fig. 7 B is the perpendicular cutaway view that is used for the mould of Gravity casting machines.
Fig. 8 is the flow chart that is used to illustrate casting operation.
Fig. 9 is a coordinate diagram, the deposite metal temperature is shown how changes.
The specific embodiment
(first embodiment)
Now, embodiments of the present invention will be described by referring to the drawings.
In Figure 1A, Figure 1B to Fig. 5, the temperature sensor 2 of reference number 1 expression first embodiment is installed to the mould on it.Mould 1 is installed to the air injection machine (not shown) and comprises by upper support member 3 and be installed to the patrix 4 of casting machine pressing plate and be supported on counterdie 6 on the casting machine pedestal by lower support member 5.Casting machine is designed to drive pressing plate to move up patrix 4 or patrix 4 is displaced downwardly to counterdie 6 is respectively applied for mould and opens or clamp from counterdie 6.The metal that is used for by mould 1 casting is an aluminium alloy.
Patrix 4 forms the die cavity 7 that has under shed.Counterdie 6 forms the die cavity 8 with upward opening.In first embodiment, die cavity 7,8 refers to be used to form the recessed of cast article part.
Patrix 4 and counterdie 6 are provided with the heater (not shown), are used for they are preheated to the temperature of preparing casting; With the water cooling plant (not shown), be used for keeping mold temperature at casting process.
Shown in Figure 1A, 1B and 2, form the runner 9 that extends to opposite side from a side of die cavity 8 at the interior bottom portion place of counterdie 6.Cast gate 10 also is formed on the interior bottom portion place of counterdie 6, and extend downwards its bottom from runner 21.Temperature sensor 2 of the present invention is installed into the inboard in the face of runner 9.
Shown in Figure 1B, the place, bottom that cast gate 10 is formed on counterdie 6 sets up drafting angle by boring and makes the opening diameter of cast gate 10 become gradually towards the top greatly, as shown in Figure 2, has elliptical shape when making from top observation.
Be used to prevent that filter 11 that impurity enters mould inside is installed to the opening of cast gate 10 upper ends.The bottom of cast gate 10 is connected to the top of the cup 12 that is arranged in the lower support member 5.Cup 12 in the vertical directions pass lower support member 5.From the supply deposite metal 13, top of stalk (not shown), stalk contacts with the bottom surface of lower support member 5.
More specifically, the bottom of stalk is immersed in the deposite metal in the melting basin (not shown) be included in the smelting furnace (not shown).The surface of the deposite metal 13 in casting process in the pressurization melting basin allows deposite metal 13 to flow into the cast gate 10 by cup 12 from stalk.Deposite metal 13 flows into the runner 9 by filter 11 from cast gate 10, and flows into afterwards in the die cavity 7,8.{ product section 14 (see figure 2)s } are solidified in deposite metal 13 beginnings of filling mould 1 in this way in die cavity 7,8.
The zone of solidifying of deposite metal 13 expands to the runner 9 from die cavity 7,8, and along with expanding to time lapse in the cast gate 10.The casting machine serviceability temperature sensor of first embodiment (will in following description) is with the temperature of the deposite metal 13 in the part (runner section just) that directly detects casting after the deposite metal 13 that begins to pressurize.Based on the temperature of deposite metal 13, can detect solidifying of deposite metal 13, casting machine is finished the pressurization of deposite metal 13 when solidifying of deposite metal 13 expands near regional between cast gate 10 and the runner 9 thus.The pressurization of deposite metal 1 is finished in this way, and it causes under the not frozen metal in cup 12 and the stalk and flow in the melting basin.When the temperature of deposite metal 13 (foundry goods) dropped to certain level, casting machine was opened mould then.
As shown in Figure 3, temperature sensor 2 comprises sacrificial metal device 22, and sacrificial metal device 22 comprises: the protection part 2a that in the vertical direction extends; The support section 2b that forms as one with protection part 2a at the cardinal extremity place of protection part 2a; Axially pass the through hole 21 of sacrificial metal device 22.Temperature sensor 2 also comprises the thermocouple 23 that inserts in the through hole 21, and temperature sensor 2 is coupled in the installing hole 24 that bores in counterdie 12.As shown in Figure 3; installing hole 24 is made up of small diameter portion 24a that has opening in runner 9 and the major diameter part 24b with the opening that is outwards guided by mould; protection part 2a is installed among the small diameter portion 24a, and support section 2b is installed among the major diameter part 24b.Installing hole 24 is drilled to and makes it open at mould that (vertical direction among Fig. 3) extends through counterdie 6 on the direction, and near cast gate 10 1 sides in the counterdie 6.
Being installed in that position that support section 2b among the major diameter part 24b will be installed to the sacrificial metal device 21 of counterdie 6 is restricted to can not be from the position shown in the figure further toward mould 1 inner position of inserting.Sacrificial metal device 22 and counterdie 6 are manufactured from the same material.In first embodiment, hot-die is used alloy tool steel (SKD).
The length that is installed in the protection part 2a in the installing hole 24 with support section 2b of sacrificial metal device 22 is designed to make the top of temperature detection part 25 and sacrificial metal device 22 to be projected in the runner 9.In other words, sacrificial metal device 22 is installed to counterdie 6, and wherein temperature detection part 25 is projected into the casting space (runner 9) in the mould.Sacrificial metal device 22 forms has the temperature detection part 25 of the external diameter that diminishes gradually towards the top.Casting space also comprises other zone with the deposite metal filling that is different from runner 9, for example cast gate 10 in die cavity 7,8 and the mould 1.
In other words, the temperature detection part 25 of sacrificial metal device 22 forms drafting angle and tapering.Temperature detection part 25 defines the top of temperature sensor in the present invention.In first embodiment, temperature detection part 25 has the dome shape tip portion 25a that raises up, and the top separately of two types of conductor 23a, 23b of thermocouple 23 is welded to tip portion 25a.More specifically, the top end face separately of conductor 23a, 23b that passes through hole 24 together welds come occlusion of openings with the welding electrode that utilizes common material (alloy tool steel (SKD) that is used for hot-die) to make with them to the opening of tip portion 25a.The opening of welding is polished into dome shape then.
Use known alumel-chromel thermocouple 23 commonly used.It comprises two types conductor 23a, 23b, their temperature detection part 25 mutual conductings by being soldered to sacrificial metal device 22.The temperature of the contacted deposite metal 13 of tip portion 25a (thermocouple 23 is welded on here) of thermocouple 23 allowable temperature sensors, 2 detections and sacrificial metal device 22 (protection part 2a) is set in this way.
Pass sacrificial metal device 22 is introduced to counterdie 6 to two conductor 23a, the 23b of support section 2b outside.The controller that is connected internally to casting machine 31 (seeing Figure 1A and 1B) of their stainless steel pipes 26 by being soldered to support section 2b.In the temperature sensor 2 of first embodiment, fireproof heat-insulating powder 27 is filled in the through hole 21 around conductor 23a, 23b.For fireproof heat-insulating powder 27, for example magnesia (MgO) can be used for the glow plug of Diesel engine.
The temperature of deposite metal temperature controller control furnace heats device is to be heated to predetermined temperature with the deposite metal in the melting basin 13.The casting condition adjuster of Miao Shuing is determined the temperature of deposite metal 13 to each mould that uses after a while.
The heater in the mold temperature controller control mould 1 and the temperature of cooling device are to be heated to predetermined temperature with mould 1.The casting condition adjuster is determined the temperature of each mould 1 of use.
Moulding pressure controller opens/close be used for the pressurizeing pressue device (not shown) of deposite metal 13 of melting basin is controlled simultaneously from the gas flow of pressue device supply, makes the delivery rate that supplies to the deposite metal 13 the mould 1 from melting basin equal set rate.The casting condition adjuster is determined predetermined delivery rate to each mould that uses.
By the casting condition adjuster, according to each mould that is used for casting process, the data relevant with the casting process for example delivery rate etc. of mould and deposite metal temperature, pressurization and setting time and deposite metal 13 all are sent to deposite metal temperature controller, mold temperature controller and moulding pressure controller.The casting condition adjuster also is used for the startup/stop signal of moulding pressure controller with output, thereby starts/stop the deposite metal 13 of pressurizeing with the scheduled time separately.The casting condition adjuster is also exported the mould that is used for driver element 13 and is opened/clamping signal, thus with the scheduled time respectively up/down move patrix 4.
For these startup/stop signals and mold cramping/opening signal, when the temperature that detects with temperature sensor 2 reaches predetermined temperature T1, T2, send respectively and stop and mould opening signal (see figure 5).Temperature T 1 is the optimum temperature that is used to finish pressurization deposite metal 13, it is pre because solidifying in the top of product section, runner section and cast gate, deposite metal 13 in them does not have flowability, and still there is flowability the deposite metal 13 that begins on stalk 9 sides from the top of cast gate.
In other words, temperature T 1 is predetermined to be such maximum: even pressue device stops pressurization, only the deposite metal 13 on the side under the top that is positioned at cast gate of stalk is towards melting basin side direction current downflow.As shown in Figure 3, in first embodiment, the top that temperature T 1 is pre filter 11 still is retained in the foundry goods.The temperature T 2 that is lower than temperature T 1 is the optimum temperatures that are used to open mould, and it is predetermined to be such maximum: this deposite metal, maximum place 13 fully is not frozen into unalterable foundry goods shape and size as yet when opening mould.
Even the casting condition adjuster of first embodiment be designed to cause owing to some faults temperature sensor 2 can not the condition of detected temperatures T1, T2 under, also can produce flawless product.In other words, in order to solve the failure problems of temperature sensor 2, the casting condition adjuster is designed to determine to finish time of pressurization deposite metal 13 and the time of determining to open mould based on the time (pressurization and setting time) rather than by the temperature that temperature sensor 2 detects.More specifically, it is under faulty goods or the out of order situation that the casting condition adjuster is designed at temperature sensor 2, finishes the pressurization of deposite metal 13 when 13 pressurization begins over and done with predetermined pressing time from the deposite metal.The casting condition adjuster also is designed to open mould when the over and done with predetermined setting time of beginning is finished in 13 pressurization from the deposite metal.
Refer to point the solidifying the cycle that the zone expands to the point in time of cast gate 10 from the time that begins to supply deposite metal 13 pressing time to deposite metal 13.Be the type according to the mould 1 that uses this pressing time, obtains by calculating based on the temperature of temperature that begins to supply deposite metal 13 place's moulds 1 and the deposite metal in the melting basin 13.Setting time refers to be used to make the foundry goods of mould 1 inside fully to solidify and can not be in the required cycle of easy deformation after the pressurization of finishing deposite metal 13.This setting time is the type according to mould 1, obtains by calculating based on the temperature at the pressurization place mould 1 of finishing deposite metal 13.These pressurizations and setting time can be stored in conduct table in the memory in advance, and read from memory as required.
Next with reference to Figure 4 and 5, describe the aforementioned operation of casting machine in detail in conjunction with the further detailed construction of controller 31.One-period (once) in the foundry work that repeats has only been described herein.Therefore the hypothesis casting condition that is used for each mould 1 has been imported the casting condition adjuster, and the temperature of mould 1 and deposite metal 13 has reached the target casting temperature.The input of casting condition is to finish by given predetermined value is input to the performing a programme that is used for each mould 1.
For example start the foundry work of the clamped casting machine of mould wherein 1 by the starting switch (not shown) of outwarding winding.When starting switch was outwarded winding, the casting condition adjuster determined at first whether the temperature of mould 1 and deposite metal 13 is being used to produce in the scope of no defective product, shown in the step S1 among Fig. 4.The scope that is used to produce no defective product refers to can become gradually the temperature range of no defective product, and it is scheduled to for each mould.If whether, perhaps aforementioned temperature drops on and is used to produce outside the scope of no defective product, and then process proceeds to step S2, and carries out alarm procedure, and wherein the casting condition adjuster provides operator's prompting of abnormal temperature.This causes stopping casting operation.
If within this scope, then the casting condition adjuster calculates the pressing time (step S3) of deposite metal 13, and this is essential for carry out casting process under temperature sensor 2 inoperable situations.Then in step S4, the casting condition adjuster sends to the moulding pressure controller with enabling signal with the data of the delivery rate that is used for deposite metal 13.The enabling signal that is sent to the moulding pressure controller in this way causes that pressue device is fed to inert gas in the smelting furnace.
As a result, the deposite metal 13 of pressurization is fed to the mould 1 by cup 12, cast gate 10 and filter 11 from stalk.The part of the filling die cavity 7,8 of deposite metal 13 is at first solidified in the product section 14 in die cavity 7,8.Along with time lapse, the zone of solidifying of deposite metal 13 extends to cast gate 10 downwards from runner 9.In addition, when pressue device began to pressurize as mentioned above, the timer (not shown) also started simultaneously.
After this, in step S5, the casting condition adjuster uses the temperature sensor 2 in the counterdie 6 to detect the temperature of the deposite metal 13 in the runner 9.As shown in Figure 5, the temperature (after beginning to supply deposite metal 13) after the casting beginning that detects with temperature sensor 2 increases suddenly, and remain unchanged within a certain period of time then (along with flowing in runner 9 in deposite metal 13) reduces afterwards gradually.In step S6, the casting condition adjuster compares temperature sensor 2 maximum temperature that detects and the temperature range of being scheduled to.If maximum temperature drops in the predetermined temperature range, then the casting condition adjuster is determined temperature sensor 2 operate as normal.On the contrary, if maximum temperature drops on outside the predetermined temperature range, then it determines temperature sensor 2 cisco unity malfunctions (being in abnormality).
Determine that in step S6 temperature sensor is under the situation of abnormality, when the time in the past that timer is indicated reached the pressing time of obtaining among the step S3, the casting condition adjuster sent stop signal to the moulding pressure controller.The moulding pressure controller receives stop signal then, and it causes pressue device stop supplies inert gas, finishes the pressurization (step S7) of deposite metal 13 thus.Roughly identical with the time of stop supplies deposite metal 13, the casting condition adjuster calculates setting time (step S8) based on the Current Temperatures of mould 1.
After the stop supplies deposite metal 13, the not frozen metal 13 in the mould flows back into melting basin from cast gate 10 by cup 12 and stalk in step S7.Further solidify in the absence that does not have the heat supply deposite metal 13 (flowability) that is retained in the mould 1, and its hardness increases (step S9).When finishing the pressurization of deposite metal 13, start the timer (not shown).Then, after the time by the timer indication reached setting time, the casting condition adjuster sent the mould opening signal to driver element 13.Then, driver element 13 receives the mould opening signal, and it causes that patrix 4 moves up to open mould (step S10 to S11).
If in step S6 for being or definite temperature sensor 2 operate as normal that then in step S12, casting condition adjuster serviceability temperature sensor 2 detects the temperature of the deposite metal 13 in the runner 9.The temperature that detects with temperature sensor 2 changes as shown in Figure 5.After reaching maximum temperature, along with further solidifying it and reduce gradually in deposite metal 13.When the temperature that detects with temperature sensor 2 drops to predetermined temperature T1 (step S13), the casting condition adjuster sends stop signal to the moulding pressure controller.The moulding pressure controller receives stop signal then, and it causes that pressue device stops the inert gas supply, finishes the pressurization (step S14) of deposite metal 13 thus.
When finishing the pressurization of deposite metal 13, not solidified metal 13 rolls back in the melting basin, and does not have mobile deposite metal 13 to be retained in the mould 1.Further solidify the deposite metal 13 of this reservation, because there is not the heat supply, its temperature further reduces.Casting condition adjuster serviceability temperature sensor 2 detects the temperature of the deposite metal 13 in the runner section always, shown in step S15, S16.When the temperature of the deposite metal of detecting with temperature sensor 2 13 dropped to predetermined temperature T2, the casting condition adjuster was determined to finish and is solidified and send the mould opening signal to driver element 13.
Thus, as above the air injection machine of structure uses the temperature sensor 2 that is installed to mould 1 to cast, and its deposite metal 13 that allows the cast gate 10 from counterdie 6 to flow in the runner 9 contacts with the sacrificial metal device 22 of temperature sensor 2.This contact between deposite metal 13 and the sacrificial metal device 22 allows directly to detect by temperature sensor 2 temperature of the deposite metal 13 in the part (runner section just) of foundry goods.
Thus, the casting machine that comprises temperature sensor 2 can directly directly detect the temperature of foundry goods in casting process, thereby can finish the pressurization of deposite metal 13 the most in time or open mould according to the actual freezing rate of deposite metal 13, shortens the cycle thus.
Because sacrificial metal device 22 and counterdie 6 are manufactured from the same material, so temperature sensor 2 has hear resistance and the intensity identical with mould 1.This has prevented because the heat and the pressure of deposite metal 13 cause damaging temperature sensor 2.Except sacrificial metal device 22 and mould 1 are used the same material, temperature detection part 25 is formed with drafting angle or tapering.Therefore; when opening mould or during from the mold separation foundry goods; sacrificial metal device 22 can easily remove from foundry goods with mould 1, and can not cause wearing and tearing or tear owing to foundry goods, though the deposite metal 13 that forms foundry goods with situation that sacrificial metal device 22 contacts under solidify.
The temperature sensor 2 of first embodiment is installed to counterdie 6, and the temperature detection part 25 of sacrificial metal device 22 is in the face of the inside of runner 9, with the temperature of the tip portion 25a of detected temperatures test section 25.Therefore temperature sensor 2 can detect the temperature of the deposite metal 13 that is arranged in runner 9, the just temperature of the deposite metal 13 of the most close product section 14.Therefore, this has guaranteed not have on the product section vestige of temperature sensor 2, and can detect the temperature of foundry goods with high accuracy.In addition, in this embodiment, temperature sensor 2 is arranged on and makes the position of temperature detection part 25 in the face of runner 9 inboards.But, should be appreciated that temperature sensor mounted position is not limited to runner 9 according to the present invention, and can change, for example be mounted to die cavity 7,8 or cast gate 10.
(second embodiment)
Describe the embodiment that is applied to Gravity casting machines of the present invention in detail with reference to figure 6A, 6B to 9.
Fig. 6 A and 6B and 7A and 7B illustrate the mould that is used for Gravity casting machines, and wherein Fig. 6 A and 7A are cross-sectional planes, and Fig. 6 B and 7B are the perpendicular planes that cuts open.Fig. 8 is the flow chart that is used to illustrate casting operation.Fig. 9 is a coordinate diagram, illustrates how the deposite metal temperature changes.
Shown in Fig. 6 A and 6B and 7A and 7B, gravity casting die 41 comprises and forms first mould 42 and second mould of opening in the horizontal direction 43, and die cavity 44,45 and be positioned at rising head 46,47 on the die cavity.First mould 42 and second mould 43 are mounted to mould driver element (not shown), and mould clamps and opens by the mould driver element.
In the mould shown in Fig. 6 A and the 6B 41, deposite metal 13 is supplied to the die cavity 44,45 from rising head 46,47.Mould 41 shown in Fig. 7 A and the 7B has cast gate 48, and cast gate 48 is formed with opening upwards on rising head 46,47 sides.Used deposite metal 13 wherein to be supplied to the structure of die cavity 44,45 bottoms by runner 49 from cast gate 48.Each has the temperature sensor that is arranged in the rising head 46,47 these moulds 41.
Having as mentioned above the Gravity casting machines of mould 41 controls in mode shown in Figure 8 by the controller (not shown).More specifically, among the step P1 in the flow chart of Fig. 8, controller is determined whether the Current Temperatures of mould 41 and deposite metal 13 drops on and is used to produce in the scope of no defective product.The scope that is used to produce no defective product refers to that foundry goods can become the temperature range of no defective product, and it is scheduled to each mould.If be not defined as not or aforementioned temperature drops on and is used to produce outside the scope of no defective product, process proceeds to step P2 and carries out alarm procedure, and its middle controller provides operator's prompting of temperature anomaly.This causes stopping of casting operation.
If in temperature range, then Gravity casting machines uses deposite metal feeding mechanism (not shown) to wait and supplies deposite metal 13 (toppling over) to fill mould 41 (step P3).In casting place, controller calculates the setting time of deposite metal 13, and this is essential for the casting program that is used to carry out use under the situation of temperature sensor 2 cisco unity malfunctions.Simultaneously, start timer.
As mentioned above, after being fed to deposite metal 13 in the mould 41, controller serviceability temperature sensor 2 detects the temperature of the deposite metal 13 in rising head 46,47 or the cast gate 48, as shown in step P4.The temperature that detects with temperature sensor 2 begins (casting beginning) and increases suddenly afterwards at casting process, remain unchanged within a certain period of time then, and reduce gradually afterwards, as shown in Figure 9.Afterwards, in step P5, if the maximum temperature that detects with temperature sensor 2 drops in the predetermined temperature range, then controller is determined temperature sensor 2 operate as normal.On the contrary, if maximum temperature drops on outside the predetermined temperature range, then controller is determined temperature sensor 2 cisco unity malfunctions (in abnormality).
If determine that in step P5 temperature sensor 2 is in abnormality, then controller is in the setting time (step P6) that stand-by state obtains in the time in the past of being indicated by timer arrival step P3, and sends the mould opening signal afterwards to the mould driver element.The mould driver element receives the mould opening signal in this way then, and it causes that mould opens (step P7).
If in step P5, be sure or temperature sensor 2 working properly, then in step P8, controller serviceability temperature sensor 2 detects the temperature of deposite metal 13.
The temperature that detects with temperature sensor 2 changes as shown in Figure 9.After reaching maximum temperature, along with further solidifying it and reduce gradually in deposite metal 13.When the temperature that detects with temperature sensor 2 drops to predetermined temperature T3 (step P9), controller uses the mould driver element to open mould (step P7).Temperature T 3 is predetermined to be such maximum, fully solidifies in this deposite metal, maximum place 13 to open Shi Buhui at mould to change the foundry goods shape and size.In this way, mould is opened, and it causes finishing the foundry work of one-period.When the temperature detection part 25 of temperature sensor 2 during from first mold separation, the temperature detection part 25 of temperature sensor 2 can easily remove from foundry goods, because temperature detection part 25 has formed drafting angle or tapering after casting process finishes.
Thus, the Gravity casting machines serviceability temperature sensor 2 that has the mould 41 of second embodiment directly detects the temperature of deposite metal 13 and the time of determining to open mould based on the temperature of this detection.This has guaranteed that mould 41 is opened in mode the most timely according to the condition of foundry goods, changes even exist in the temperature of mould 41 when casting process begins.
Therefore, do not need unnecessarily to prolong or shorten the setting time that is used for deposite metal 13, perhaps setting time can be minimized to and make foundry goods become the required time of no defective product.This has further improved productivity ratio.
Industrial applicability
The present invention can be applied to the cylinder head such as car engine, marine engine or other utility engines And so on the casting parts.
Claims (4)
1. temperature sensor that is used for casting machine, it is by making with the mould identical materials, and it comprises: the sacrificial metal device has pattern draft or tapering along its top; And thermocouple, it inserts in the described sacrificial metal device to be connected to its described top, and the described top of wherein said sacrificial metal device is mounted to described mould to be projected in the casting space in the described mould.
2. the temperature sensor that is used for casting machine according to claim 1, the top of wherein said sacrificial metal device open at mould that the inner wall surface from described mould is projected into the described casting space on the direction.
3. a casting machine comprises: temperature sensor according to claim 1; And controller, be used for based on the time of controlling the stop supplies deposite metal with the temperature of described temperature sensor detection; Wherein, described temperature sensor is positioned at than described deposite metal in late position of solidifying, the die cavity place of described mould, and the top of described sacrificial metal device is opened on the direction at mould and is projected into the described mould from the mould inner wall surface.
4. a casting machine comprises: temperature sensor according to claim 1; And controller, be used for controlling the time of opening described mould based on the temperature that detects with described temperature sensor; Wherein, described temperature sensor is positioned at than the deposite metal in late position of solidifying, the die cavity place of described mould, and the top of described sacrificial metal device is opened on the direction at mould and is projected into the described mould from the mould inner wall surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004012880A JP2005205436A (en) | 2004-01-21 | 2004-01-21 | Temperature sensor for casting machine and casting machine |
| JP012880/2004 | 2004-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1909999A true CN1909999A (en) | 2007-02-07 |
| CN100400201C CN100400201C (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800026231A Active CN100400201C (en) | 2004-01-21 | 2005-01-20 | Thermosensor for casting machine and casting machine |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2005205436A (en) |
| KR (1) | KR101131433B1 (en) |
| CN (1) | CN100400201C (en) |
| BR (1) | BRPI0506940B1 (en) |
| TW (1) | TW200539969A (en) |
| WO (1) | WO2005070593A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325113A (en) * | 2014-10-10 | 2015-02-04 | 镁联科技（芜湖）有限公司 | Automatic material locking structure of mold and compression molding die |
| CN104439062A (en) * | 2014-12-08 | 2015-03-25 | 中国南方航空工业(集团)有限公司 | Mold for measuring temperature in casting process and production method of mold |
| CN105562656A (en) * | 2016-01-26 | 2016-05-11 | 广东鸿图武汉压铸有限公司 | Pressure casting real-time monitoring device in mould cavity |
| CN106734996A (en) * | 2017-01-19 | 2017-05-31 | 珠海肯赛科有色金属有限公司 | A kind of casting solidifies temp measuring method in fact |
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| CN101618440B (en) * | 2009-04-30 | 2013-09-18 | 湖南镭目科技有限公司 | Crystallizer of continuous caster and temperature detection device thereof |
| EP2578333A1 (en) * | 2011-10-07 | 2013-04-10 | Nemak Linz GmbH | Method for controlling a casting assembly |
| KR101416577B1 (en) * | 2012-10-04 | 2014-07-07 | 한국타이어 주식회사 | mixed Thermometer |
| CN103808421B (en) * | 2014-01-22 | 2016-05-11 | 东风商用车有限公司 | Armored thermocouple assembly for measuring temperature of cylinder cover and manufacturing and mounting method thereof |
| CN105486420A (en) * | 2015-11-19 | 2016-04-13 | 成都兴宇精密铸造有限公司 | Temperature detector for injection mechanism of extrusion casting machine |
| KR101772594B1 (en) * | 2015-12-04 | 2017-08-29 | 주식회사 포스코 | Holder for temperature measuring apparatus |
| KR101950022B1 (en) * | 2017-06-13 | 2019-02-20 | 한국생산기술연구원 | Casting ware production monitoring system and closed-loop sand reclaim type cast manufacturing method using of the same |
| FR3099230B1 (en) * | 2019-07-23 | 2021-07-02 | M C Aeronautique | ] COMBUSTION CHAMBER OF A THERMAL ENGINE INTEGRATING A TEMPERATURE SENSOR AND ASSOCIATED THERMAL ENGINE |
| CN112692245B (en) * | 2021-03-25 | 2021-06-22 | 上海鑫蓝海自动化科技有限公司 | Temperature measuring device of vacuum precision casting furnace |
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| JP2768726B2 (en) * | 1989-03-30 | 1998-06-25 | エヌオーケー株式会社 | Casting mold and casting method using the casting mold |
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| JP2922830B2 (en) * | 1995-09-29 | 1999-07-26 | 株式会社神戸製鋼所 | Low pressure casting apparatus and low pressure casting method |
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- 2004-01-21 JP JP2004012880A patent/JP2005205436A/en active Pending
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- 2005-01-12 TW TW094100887A patent/TW200539969A/en unknown
- 2005-01-20 KR KR1020067014490A patent/KR101131433B1/en active IP Right Grant
- 2005-01-20 WO PCT/JP2005/000685 patent/WO2005070593A1/en active Application Filing
- 2005-01-20 BR BRPI0506940A patent/BRPI0506940B1/en active IP Right Grant
- 2005-01-20 CN CNB2005800026231A patent/CN100400201C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325113A (en) * | 2014-10-10 | 2015-02-04 | 镁联科技（芜湖）有限公司 | Automatic material locking structure of mold and compression molding die |
| CN104439062A (en) * | 2014-12-08 | 2015-03-25 | 中国南方航空工业(集团)有限公司 | Mold for measuring temperature in casting process and production method of mold |
| CN105562656A (en) * | 2016-01-26 | 2016-05-11 | 广东鸿图武汉压铸有限公司 | Pressure casting real-time monitoring device in mould cavity |
| CN105562656B (en) * | 2016-01-26 | 2021-07-02 | 广东鸿图武汉压铸有限公司 | Die-casting real-time monitoring device in mould cavity |
| CN106734996A (en) * | 2017-01-19 | 2017-05-31 | 珠海肯赛科有色金属有限公司 | A kind of casting solidifies temp measuring method in fact |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0506940B1 (en) | 2015-12-29 |
| KR101131433B1 (en) | 2012-03-29 |
| WO2005070593A1 (en) | 2005-08-04 |
| BRPI0506940A (en) | 2007-06-12 |
| JP2005205436A (en) | 2005-08-04 |
| KR20070001097A (en) | 2007-01-03 |
| TW200539969A (en) | 2005-12-16 |
| CN100400201C (en) | 2008-07-09 |
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