CN208527729U - A kind of device of accurate control aluminium section hot-extrusion die local temperature - Google Patents
A kind of device of accurate control aluminium section hot-extrusion die local temperature Download PDFInfo
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- CN208527729U CN208527729U CN201820769045.9U CN201820769045U CN208527729U CN 208527729 U CN208527729 U CN 208527729U CN 201820769045 U CN201820769045 U CN 201820769045U CN 208527729 U CN208527729 U CN 208527729U
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Abstract
The utility model provides a kind of device of accurate control aluminium section hot-extrusion die local temperature, including liquid nitrogen container, low temperature control valve, liquid nitrogen pipes, die-cushion, mold and temperature controller, the mold is mounted in die-cushion, the liquid nitrogen pipes are connected between liquid nitrogen container and die-cushion and for conveying liquid nitrogen into die-cushion, the low temperature control valve is set in liquid nitrogen pipes and controls liquid nitrogen flow, contact thermocouple is equipped in the mold, the contact thermocouple is connected with temperature controller by compensating wire, the temperature controller is electrically connected with low temperature control valve and controls signal to low temperature control valve conveying direct current.The utility model provides feedback signal to low temperature liquid nitrogen control valve by direct Measurement die temperature, to accurately control the temperature of mold, overcomes the variation hysteresis quality and inconsistency of press exit profile high temperature and mold temperature in aluminium extrusion process.
Description
Technical field
The utility model relates to the technical fields of aluminum profile production equipment, more particularly to a kind of accurate control aluminum profile hot extrusion
The device of compression mould local temperature.
Background technique
Aluminium profile product is to enable aluminum alloy to material by the method for hot extrusion by the mold of specific structure form to be extruded
It is molding.Due to be high temperature and pressure height friction under conditions of work, the work belt of mold often because of local temperature not
It is disconnected to increase and wear and be easiest to fail, so as to cause the decline of Surface of profile quality, dimension overproof, or even mold is caused to scrap
Problem.Based on problem above, there are two existing solution is main: first is that reducing aluminium alloy using lower extrusion speed
The accumulation of deformation heat and frictional heat in extrusion process used for forming avoids result in the lasting raising of mold part (work belt) temperature；
Second is that this method is to introduce liquid nitrogen in groove special on die-cushion by additional pipeline, liquid nitrogen using liquid nitrogen cooling technology
By thermal evaporation heat absorption, thus the mold temperature for reducing die-cushion and being in close contact with die-cushion, the supply of liquid nitrogen is by Subzero valve
Control, preferable control technology are to export installation infrared thermometer in press, and the surface temperature of aluminum profile is squeezed out by measurement,
It feeds back the low temperature valve that can automatically adjust valve aperture and then controls the supply of liquid nitrogen, this method is to be extruded due to temperature measuring point
Aluminum profile, and the non-required mold for directly controlling cooling, and the temperature of practical upper sectional material and the temperature of mold do not have sternly
The consistency of lattice, thus in this method liquid nitrogen to the control of mold temperature and inaccurate, sometimes because both temperature change it is stagnant
Property causes the control signal of temperature feedback to play opposite effect to liquid nitrogen cooling afterwards.
Utility model content
The purpose of this utility model is to provide a kind of device of accurate control aluminium section hot-extrusion die local temperature, energy
The temperature of enough accurate control aluminium section hot-extrusion dies, overcomes press exit profile high temperature and mold temperature in aluminium extrusion process
Variation hysteresis quality and inconsistency.
In order to achieve the above object, the utility model adopts the following technical solution: a kind of accurate control aluminum profile hot-extrusion
The device of mold local temperature, including liquid nitrogen container, low temperature control valve, liquid nitrogen pipes, die-cushion, mold and temperature controller, the mold
It is mounted in die-cushion, the liquid nitrogen pipes are connected between liquid nitrogen container and die-cushion and for conveying liquid nitrogen into die-cushion, described low
Temperature control valve is set in liquid nitrogen pipes and controls liquid nitrogen flow, and contact thermocouple, the contact heat are equipped in the mold
Galvanic couple is connected with temperature controller by compensating wire, and the temperature controller is electrically connected with low temperature control valve and conveys to low temperature control valve straight
Flow electric control signal.
Further, the die-cushion is exported equipped with profile, and work belt, the work belt and profile are equipped in the mold
Export coaxially arranged, the die-cushion contacts mold and the one side close to profile outlet is equipped with liquid nitrogen channel loop, and the liquid nitrogen is logical
Road circuit is connected to liquid nitrogen pipes.
Further, the liquid nitrogen channel loop is equipped with liquid nitrogen entrance and liquid nitrogen exports, the liquid nitrogen outlet and profile
Outlet, the liquid nitrogen entrance are connected to liquid nitrogen pipes.
Further, the section of the liquid nitrogen channel loop is semicircular structure, and is arranged around liquid nitrogen entrance.
Further, the contact thermocouple is mounted on the periphery in mold and being located at work belt.
After adopting the above technical scheme, the utility model has the advantages that
1, by the installation mold in die-cushion, and contact thermocouple is mounted in mold, passes through contact thermocouple
Realize the direct measurement to mold temperature, and the mold temperature information by measuring passes to temperature controller, temperature controller is according to default
Mould invalidation temperature control output phase answer the direct current signal of voltage value or current value, and signal is passed into low temperature control valve,
The aperture of low temperature control valve is controlled and adjusted according to this, realizes the control of liquid nitrogen flow in liquid nitrogen pipes, and then realize accurate control
The temperature of molding jig overcomes in aluminium extrusion process the variation hysteresis quality of press exit profile high temperature and mold temperature and different
Cause property, secondly, accurately control liquid nitrogen flow by valve opening in mold liquid nitrogen cooling procedure, and by contact thermocouple and
When feed back liquid nitrogen flow control valve, avoid in the prior art by infrared rays survey Surface of profile temperature scenario it is intrinsic between
The disadvantages of connecing thermometric and temperature change response lag, to prevent mold from causing extrusion process unqualified by the cooling transition of liquid nitrogen
Even directly squeeze the problems such as motionless.
2, by the way that liquid nitrogen channel loop is arranged in the one side that die-cushion contacts mold and exports close to profile, liquid nitrogen is realized
Liquid nitrogen on channel loop can accurately control temperature at the work belt of mold, extend die life and reduction to the maximum extent
The dosage of liquid nitrogen.
3, liquid nitrogen is delivered to liquid nitrogen entrance by liquid nitrogen pipes by liquid nitrogen container, and liquid nitrogen channel is entered by liquid nitrogen entrance
Circuit, which is realized, cools down to mold, and the liquid nitrogen of low temperature can be also evaporated to inertia protective effect at once while cooling to mold
Nitrogen, nitrogen can empty the oxygen in mould outlet space, i.e., form nitrogen blanket in profile exit, protect mold
With Surface of profile not by high-temperature air oxidation.
4, it by making the section semicircular structure of liquid nitrogen channel loop, and is arranged around liquid nitrogen entrance, realizes liquid nitrogen pair
The efficient cooling of mold, reduces the dosage of liquid nitrogen.
5, in mold and it is located at the periphery of work belt by the way that contact thermocouple to be mounted on, the work to mold may be implemented
Make relatively accurately controlling and extending die life to the maximum extent and reduce the dosage of liquid nitrogen with temperature.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the dress for the accurate control aluminium section hot-extrusion die local temperature of one kind that the utility model embodiment one proposes
The structural schematic diagram set；
Fig. 2 is the dress for the accurate control aluminium section hot-extrusion die local temperature of one kind that the utility model embodiment one proposes
Set the schematic diagram of middle contact thermocouple and work belt；
Fig. 3 is the cross-sectional view in the face a-a in Fig. 2；
Marked the names of the parts are as follows in figure:
1- liquid nitrogen container, 2- low temperature control valve, 3- liquid nitrogen pipes, 4- die-cushion, 5- mold, 6- contact thermocouple, 7- temperature control
Instrument, the outlet of 41- liquid nitrogen, the outlet of 42- profile, 43- liquid nitrogen entrance, 44- liquid nitrogen channel loop, 51- work belt.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.It is to be appreciated that following
The indicating positions such as "upper", "lower", "left", "right", " longitudinal direction ", " transverse direction ", "inner", "outside", "vertical", "horizontal", "top", "bottom"
Or the word of positional relationship is based only upon orientation or positional relationship shown in the drawings, only for the purposes of describing the utility model and simplification
Description, rather than device/element of indication or suggestion meaning must have a particular orientation or be constructed and be grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.
Embodiment one
As shown in Figure 1-3, the utility model provides a kind of device of accurate control aluminium section hot-extrusion die local temperature,
Including liquid nitrogen container 1, low temperature control valve 2, liquid nitrogen pipes 3, die-cushion 4, mold 5 and temperature controller 7, the mold 5 is mounted on die-cushion 4
Interior, the liquid nitrogen pipes 3 are connected between liquid nitrogen container 1 and die-cushion 4 and for conveying liquid nitrogen, the low temperature control into die-cushion 4
Valve 2 is set in liquid nitrogen pipes 3 and controls liquid nitrogen flow, is equipped with contact thermocouple 6, the contact thermoelectricity in the mold 5
Even 6 are connected with temperature controller 7 by compensating wire, and the temperature controller 7 is electrically connected and defeated to low temperature control valve 2 with low temperature control valve 2
Direct current is sent to control signal.It is mounted in mold by the installation mold 5 in die-cushion 4, and by contact thermocouple 6, by connecing
Touch thermocouple 6 realizes the direct measurement to 5 temperature of mold, and the mold temperature information by measuring passes to temperature controller 7, temperature
Control instrument controls output phase according to preset mould invalidation temperature and answers the direct current signal of voltage value or current value, and signal is passed to
Low temperature control valve 2 controls and adjusts the aperture of low temperature control valve 2 according to this, realizes the control of liquid nitrogen flow in liquid nitrogen pipes 3,
And then realize the temperature of accurate control mold, overcome the change of press exit profile high temperature and mold temperature in aluminium extrusion process
Change hysteresis quality and inconsistency, secondly, accurately controlling liquid nitrogen flow by valve opening in mold liquid nitrogen cooling procedure, and passes through
Contact thermocouple timely feedbacks liquid nitrogen flow control valve, avoids in the prior art through infrared rays survey Surface of profile temperature
Scheme intrinsic indirect thermometric and the disadvantages of temperature change response lag, to prevent mold from being caused by the cooling transition of liquid nitrogen
Extrusion process is unqualified or even directly squeezes the problems such as motionless.
In the present embodiment, the die-cushion 4 is equipped with profile outlet 42, is equipped with work belt 51, the work in the mold 5
Make band 51 and profile outlet 42 is coaxially arranged, the die-cushion 4 contacts mold 5 and the one side close to profile outlet 42 is led to equipped with liquid nitrogen
Road circuit 44, the liquid nitrogen channel loop 44 are connected to liquid nitrogen pipes 3.It is connect by the way that liquid nitrogen channel loop 44 is arranged in die-cushion 4
Touch tool 5 and the one side of close profile outlet 42, mold can accurately be controlled by realizing the liquid nitrogen on liquid nitrogen channel loop 44
Temperature at work belt 51 extends die life to the maximum extent and reduces the dosage of liquid nitrogen.
In the present embodiment, the liquid nitrogen channel loop 44 is equipped with liquid nitrogen entrance 43 and liquid nitrogen outlet 41, the liquid nitrogen
Outlet 41 is connected to profile outlet 42, and the liquid nitrogen entrance 43 is connected to liquid nitrogen pipes 3.Liquid nitrogen is passed through into liquid nitrogen by liquid nitrogen container 1
Pipeline 3 is delivered to liquid nitrogen entrance 43, and enters the realization of liquid nitrogen channel loop 44 by liquid nitrogen entrance 43 and cool down to mold 5, low temperature
Liquid nitrogen can also be evaporated to the nitrogen with inertia protective effect at once while cooling to mold, nitrogen can empty mold
Oxygen in outlet space forms nitrogen blanket at profile outlet 42, protect mold and Surface of profile not by high temperature sky
Gas oxidation.
In the present embodiment, the section of the liquid nitrogen channel loop 44 is semicircular structure, and surrounds 43 cloth of liquid nitrogen entrance
It sets.It is arranged by making the section semicircular structure of liquid nitrogen channel loop 44, and around liquid nitrogen entrance 43, realizes liquid nitrogen to mold
Efficient cooling, reduce the dosage of liquid nitrogen.
In the present embodiment, the contact thermocouple 6 is mounted on the periphery in mold 5 and being located at work belt 51.Pass through
Contact thermocouple 6 is mounted on to the periphery in mold 5 and being located at work belt 51,51 temperature of work belt to mold may be implemented
Relatively accurately control and extend die life and reduces the dosage of liquid nitrogen to the maximum extent.
It is understood that during aluminum profile hot-extrusion, using low temperature liquid nitrogen as cooling medium into
The mold 5 of row squeeze job carries out Local cooling, and the contact thermocouple 6 being mounted in mold 5 carrys out 5 temperature of Measurement die, and
Output phase is controlled according to preset mould invalidation temperature by temperature controller 7 and answers the direct current signal of voltage value or current value, and by signal
Low temperature control valve 2 is passed to, controls and adjusts the aperture of low temperature control valve 2 according to this, realize liquid nitrogen flow in liquid nitrogen pipes 3
Control, and then realize the temperature in accurate control mold near work belt；When 5 temperature of mold that contact thermocouple 6 measures reaches
When having arrived preset mould invalidation temperature, the voltage value exported or current value are increased to low temperature control valve 2 by temperature controller 7, thus
Increase the aperture of low temperature control valve 2, realizes the increase of liquid nitrogen flow in liquid nitrogen pipes 3, realize that the cooling of mold avoids mold from losing
Effect is reduced by temperature controller 7 and is exported when 5 temperature of mold that contact thermocouple 6 measures is not up to preset mould invalidation temperature
Voltage value or current value to low temperature control valve 2, to reduce the aperture of low temperature control valve 2, realize liquid nitrogen stream in liquid nitrogen pipes 3
The reduction of amount realizes that the temperature plateau of mold is reduced to normal value.
It is understood that for squeezing the lesser aluminium section die of wall thickness, contact thermocouple 6 is mountable in mold
51 near zone of work belt, to be more accurately controlled liquid nitrogen flow, it is ensured that mold temperature is not less than 420 DEG C, to prevent because of mistake
Degree cooling causes to squeeze bored vehicle.
It is understood that for mold 5 (lower die of flat-die or diffluence combination die) be introduced directly into liquid nitrogen die-cushion 4 it
Between there is the case where transitional die-cushion, then liquid nitrogen circuit should be placed on transition die-cushion, i.e., liquid nitrogen cooling circuit should be made to lean on as far as possible
Near-lying mode tool can make its dosage that is more direct to the temperature control of mold, effective and can preferably saving liquid nitrogen in this way.
It should be noted that herein, relational terms such as first and second and the like are used merely to an entity
Or operation distinguished with another entity, without necessarily requiring or implying between these entities or operation there are it is any this
Perhaps sequence and the terms "include", "comprise" or its any other variant are intended to nonexcludability to the actual relationship of kind
Include so that include a series of elements process, method, article or equipment not only include which element, but also
Including other elements that are not explicitly listed, or further include for this process, method, article or equipment intrinsic want
Element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that in the case that do not depart from the utility model spirit and can make to these embodiments carry out it is a variety of variation, repair
Change, replace and deform, the scope of the utility model is limited by the following claims and their equivalents matter.
Claims (5)
1. a kind of device of accurate control aluminium section hot-extrusion die local temperature, including liquid nitrogen container, low temperature control valve, liquid nitrogen pipe
Road, die-cushion, mold and temperature controller, the mold are mounted in die-cushion, which is characterized in that the liquid nitrogen pipes are connected to liquid nitrogen container
Between die-cushion and for conveying liquid nitrogen into die-cushion, the low temperature control valve is set in liquid nitrogen pipes and controls liquid nitrogen flow,
Contact thermocouple is equipped in the mold, the contact thermocouple is connected with temperature controller, the temperature control by compensating wire
Instrument is electrically connected with low temperature control valve and controls signal to low temperature control valve conveying direct current.
2. the device of accurate control aluminium section hot-extrusion die local temperature according to claim 1, which is characterized in that institute
It states die-cushion to export equipped with profile, work belt is equipped in the mold, the work belt and profile export coaxially arranged, the mould
Pad contact mold and the one side exported close to profile are equipped with liquid nitrogen channel loop, and the liquid nitrogen channel loop and liquid nitrogen pipes connect
It is logical.
3. the device of accurate control aluminium section hot-extrusion die local temperature according to claim 2, which is characterized in that institute
It states liquid nitrogen channel loop to export equipped with liquid nitrogen entrance and liquid nitrogen, the liquid nitrogen outlet and profile outlet, the liquid nitrogen enter
Mouth is connected to liquid nitrogen pipes.
4. the device of accurate control aluminium section hot-extrusion die local temperature according to claim 2, which is characterized in that institute
The section for stating liquid nitrogen channel loop is semicircular structure, and is arranged around liquid nitrogen entrance.
5. the device of accurate control aluminium section hot-extrusion die local temperature according to claim 1, which is characterized in that institute
It states contact thermocouple and is mounted on the periphery in mold and being located at work belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820769045.9U CN208527729U (en) | 2018-05-22 | 2018-05-22 | A kind of device of accurate control aluminium section hot-extrusion die local temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820769045.9U CN208527729U (en) | 2018-05-22 | 2018-05-22 | A kind of device of accurate control aluminium section hot-extrusion die local temperature |
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| CN208527729U true CN208527729U (en) | 2019-02-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
| CN112143943A (en) * | 2020-10-29 | 2020-12-29 | 昆明理工大学 | Preparation method of heat-resistant aluminum alloy conductor |
| CN112808788A (en) * | 2020-12-31 | 2021-05-18 | 淮安和通汽车零部件有限公司 | Extrusion processing method of automobile anti-collision beam |
-
2018
- 2018-05-22 CN CN201820769045.9U patent/CN208527729U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108500076A (en) * | 2018-05-22 | 2018-09-07 | 浙江海亮新材料有限公司 | A kind of device and method accurately controlling aluminium section hot-extrusion die local temperature |
| CN112143943A (en) * | 2020-10-29 | 2020-12-29 | 昆明理工大学 | Preparation method of heat-resistant aluminum alloy conductor |
| CN112808788A (en) * | 2020-12-31 | 2021-05-18 | 淮安和通汽车零部件有限公司 | Extrusion processing method of automobile anti-collision beam |
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