CN103185656A - Method used for monitoring temperature control device of dies of injection molding machine or die-casting machine - Google Patents

Method used for monitoring temperature control device of dies of injection molding machine or die-casting machine Download PDF

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Publication number
CN103185656A
CN103185656A CN2012105728942A CN201210572894A CN103185656A CN 103185656 A CN103185656 A CN 103185656A CN 2012105728942 A CN2012105728942 A CN 2012105728942A CN 201210572894 A CN201210572894 A CN 201210572894A CN 103185656 A CN103185656 A CN 103185656A
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China
Prior art keywords
flow
sensor
influent stream
branch line
pressure
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Granted
Application number
CN2012105728942A
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Chinese (zh)
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CN103185656B (en
Inventor
F·拉施克
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Engel Austria GmbH
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Engel Austria GmbH
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Publication date
Priority to ATA4/2012 priority Critical
Priority to ATA4/2012A priority patent/AT511110B1/en
Application filed by Engel Austria GmbH filed Critical Engel Austria GmbH
Publication of CN103185656A publication Critical patent/CN103185656A/en
Application granted granted Critical
Publication of CN103185656B publication Critical patent/CN103185656B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7306Control circuits therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/768Detecting defective moulding conditions
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76006Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76056Flow rate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/76297Fluids
    • B29C2945/76304Fluids temperature control fluids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter

Abstract

The invention relates to a method used for monitoring a temperature control device of dies of an injection molding machine or a die-casting machine. The temperature control device (1) comprises an inflow end (3) and a backflow end (6), and at least two branch pipelines (4,5) which are connected in parallel with the inflow end and the backflow end on a flowing technology. Each of the at least two branch pipelines (4,5) is provided with a flow sensor (8,8'). Through comparing measuring data provided by the flow sensor (8,8'), pressure surge in the inflow end (3) and the backflow end (6) are separated from existence of leakage.

Description

The method of register that is used for the mould of monitoring injection machine or die casting machine
Technical field
The present invention relates to a kind of method of register of the mould for monitoring injection machine or die casting machine, this register comprises the influent stream end and the end that refluxes, at least two branch lines are being arranged on the influent stream end in parallel and are refluxing between the end on the flow technique, in each of described at least two branch lines flow sensor is set.
Background technology
The mould that is used for plastic processing is typically provided with channel system, and this channel system has reflux end and be arranged on therebetween branch line (channel loop) of an influent stream end, at least.This channel system allows fluid to enter should be supplied energy or lead away in the zone of energy in the mould.In many plastic working methods,---therefore also in injection moulding---importantly, can influence the temperature in the mould individual areas targetedly, so the whole channel system in the mould is combined by a plurality of channel loops usually.In plastic processing, the most middle ground of fluid is supplied to mould, therefore need distribute this volumetric flow rate before volumetric flow rate enters mould in having the mould of a plurality of channel loops.The central fluid input is assigned with to each channel loop by allocation units.
Quantity, flow and other requirement according to used fluid, branch line provide different allocation units in market.Can be observed for a period of time to the development trend of the high-quality allocation units that sensor is housed and strengthen.Usually by these sensor measurement flows, temperature and under few situation also gaging pressure so that the process of supervision molding temperature adjustment and state.Also integrated additional sensor is used for identifying flow losses in the circulation system more and more.
In general,---be also referred to as and leak or leakage loss---for the flow losses of manufacturing enterprise's circulation system and be the problem that constantly occurs and may cause considerable economic loss.Especially (for example beyond working time) a large amount of fluids are extracted etc. under the situation about flowing out by flexible pipe fracture, interface not to be noted.Therefore the system that is used for the identification flow losses is suitable for being integrated into allocation units.
Known a series of method for identification temperature adjustment circulation flow losses:
A) in influent stream end and the end that refluxes, carry out flow measurement.The integrated additional measured sensor that is used on corresponding position for this reason.Determine to come across flow losses between the sensor by the calculated flow rate difference.
The shortcoming of this method need to be the additional sensor that is used for measuring flow.Space requirement also increases except the extra cost of sensor.When sensor fault or signal fluctuation, can not guarantee the reliable recognition flow losses again.
B) integrated at least two sensors that are used for flow measurement in the parallel branch pipeline.The calculating of difference in flow constitutes the monitoring basis of the flow losses that is arranged on the branch line between the sensor.
The shortcoming of this method is that for each branch line in parallel uses at least two sensors that are used for measuring flow, this causes significant extra cost.Except extra cost, each additional sensor means also that in system the risk of sensor fault increases.
C) in total system, detect at least one force value.Suddenly the flow losses that descends and produce suddenly in can the expression system of this force value.
The shortcoming of this method is: can only identify great flow losses.Can not distinguish the pressure of having a mind in the circulation system changes and flow losses.In addition, the identification of flow losses is relevant with the pressure survey position with respect to the flow losses place.
Summary of the invention
Task of the present invention is to provide a kind of method of register of the mould of having simplified with respect to prior art that is used for monitoring injection machine or die casting machine.
This task is solved by the method according to claim 1.Favourable embodiment is defined by dependent claims.
Preferably use liquid, especially water as fluid.
Any state in the register circulation system and any result can illustrate by the measuring-signal of analyzing pressure transducer and/or flow sensor.Measurement data by being installed in pressure transducer in the temperature adjustment circulation and flow sensor cooperatively interact status recognition and result, wherein preferred at least one pressure or flow sensor are arranged in the influent stream end and each at least one flow sensor is arranged in each branch line.
Distinguish stable status and following result: " flow losses in the circulation system ", " pressure and flow rate fluctuation in fluid influent stream end and the fluid outlet end " and " change in resistance that after fluid is assigned to branch line in parallel, causes by regulating part ".
Cooperatively interacting of measurement data by at least two sensors can characterize a kind of state or result.Curve and the constant curve basically of curve, the decline of rising divided in the performance of measurement data.Except employed sensor, the performance of measurement data also with the loop in the flow losses place relevant to the position of sensor to the position of sensor and the regulating part that may exist.
But by the leakage between the method according to this invention identification sensor.In the parallel branch pipeline leakage of flow sensor back temporarily can not with regulating part on variation zone separate.But control device knows when adjustment process carries out in the fluid distributor with automatic flow control device.Therefore but in the leakage of this distinguishing sensor back and can identify this leakage (referring to form " leakage of flow sensor 8 back in this pipeline in the branch line 4 ").
At the divider that is conditioned or there be not the people in the divider of flow regulation possibility can be by understanding adjustment process or nearlyer step and can omit sensor in the central influent stream end because adjustment process can not take place.Only need to distinguish in the case to leak and pressure surge.Flow when pressure surge in each branch line changes pro rata, and branch line relevant when leaking is more violent than other branch line reaction.
Compared with prior art advantage of the present invention is as follows:
A) all integrated sensor that is used for measuring the flow of parallel branch pipeline in most of allocation units that sell in market.For flow losses identification is integrated in the allocation units, only an additional pressure transducer need be set.Be installed in the allocation units at few situation lower pressure sensor.Omitted the extra cost that is used for additional sensor thus.
B) no longer need to install additional sensor in the allocation units by sensor is integrated into, the space requirement that is used for allocation units thus reduces.
C) though can identify flow losses by additional flow sensor is installed on the allocation units, this flow loss and a loop can not be matched.Flow losses can be disposed to relevant parallel branch pipeline by the cooperatively interacting of measurement data of analyzing pressure transducer and flow sensor.
D) can identify state and result in the circulation system by analyzing cooperatively interacting of a plurality of sensor measurement signals.For example the fluctuations in discharge that is caused by adjustment process in the pressure surge in the central fluid feedway and flow rate fluctuation or each parallel branch pipeline belongs to this category.
Description of drawings
Fig. 1 and 2 shows different embodiment of the present invention.
Embodiment
With different embodiment details of the present invention is described by accompanying drawing below.Only illustrate two branch lines.Certainly also more branch line can be set.
Accompanying drawing 1: in central influent stream end 3, pressure transducer 9 is arranged, in each parallel branch pipeline 4,5, flow sensor 8,8' are arranged.
Relevant each result's explanation:
A) because the leakage in the branch line 1, the total resistance to flow in the channel system descend and therefore on the pressure transducer 9 measured pressure also descend.Measured volumetric flow rate also descends on flow sensor 8 simultaneously, because the part of original volumetric flow rate flows out this branch line by leaking.The volumetric flow rate of being measured by flow sensor 8' shows as rising, descends or remains unchanged under the situation that branch line 1 leaks.The performance of volumetric flow rate is relevant with the position of leakage in the branch line 1 in the branch line 2.When branch line 1 leaked, the signal of flow sensor 8' changed the signal that always is significantly less than flow sensor 8 and changes.
B) by opening regulating part (flow control valve 7), the flow in the branch line 1 increase and on pressure transducer 9 measured pressure descend.Because the geometry situation in the decline of the pressure in the central influent stream end 3 and the branch line 2 is constant, so the pressure reduction between central influent stream end 3 and the backflow end 6 descends.Therefore the flow in the branch line 2 reduces.The regulating part total flow always increases by opening.In general the signal of the signal rising ≠ flow sensor 8' of flow sensor 8 descends.
C) by closing regulating part (flow control valve 7), measured pressure rises on the flow minimizing in the branch line 1 and the pressure transducer 9.Because the geometry situation in the rising of the pressure in the central influent stream end 3 and the branch line 2 is constant, so the pressure reduction between central influent stream end 3 and the backflow end 6 increases.Therefore, the flow in the branch line 2 increases.The regulating part total flow always reduces by closing.In general the signal of the signal decline ≠ flow sensor 8' of flow sensor 8 rises.
D) rising of the pressure in the central influent stream end 3 means central influent stream end 3 and refluxes and hold the pressure reduction between 6 to increase.Therefore the flow in all branch lines 4,5 increases.The number percent that flow increases in the branch line 4,5 is approximately identical.
E) performance that pressure descends in the central influent stream end 3 and some d) opposite.
When f) pressure in central authorities reflux end 6 rose, the pressure in the central influent stream end 3 also rose.Central authorities' influent stream end 3 and the pressure reduction between the end 6 of refluxing reduce generally and branch line 4,5 in flow reduce.The number percent that flow reduces in the parallel branch pipeline 4,5 is approximately identical.
G) central authorities reflux and hold performance and the some f that pressure descends in 6) opposite.
Fig. 2: in central influent stream end 3, flow sensor 10 is arranged, in each parallel branch pipeline 4,5, flow sensor 8,8' are arranged.
Relevant each result's explanation:
A) owing to the leakage in the branch line 4 in parallel, the total resistance to flow decline in the channel system and the total flow in the influent stream end 3 increase.Measured volumetric flow rate reduces on the flow sensor 8 simultaneously, because the part of original volumetric flow rate flows out this branch line 4 by leaking.The volumetric flow rate of being measured by flow sensor 8' shows as rising, descends or remains unchanged under the situation that branch line 4 leaks.The performance of the volumetric flow rate in the branch line 5 is relevant with the position of leakage in the branch line 4.When branch line 4 leaked, the signal of flow sensor 8' changed the signal that always is significantly less than flow sensor 8 and changes.
B) by opening regulating part (flow control valve 7), the total flow in the flow in the branch line 4 and the influent stream end 3 increases.Because the geometry situation in the decline of the pressure in the central influent stream end 3 and the branch line 5 is constant, so the pressure reduction between central influent stream end 3 and the backflow end 6 descends.Therefore the flow in the branch line 5 reduces.The regulating part total flow always increases by opening.In general the signal of the signal rising ≠ flow sensor 8' of flow sensor 8 descends.
C) by closing regulating part (flow control valve 7), the total flow in the flow in the branch line 4 and the influent stream end 3 reduces.Because the geometry situation in the rising of the pressure in the central influent stream end 3 and the branch line 5 is constant, so the pressure reduction between central influent stream end 3 and the backflow end 6 increases.Therefore, the flow in the branch line 5 increases.The regulating part total flow always reduces by closing.In general the signal of the signal decline ≠ flow sensor 8' of flow sensor 8 rises.
D) rising of the pressure in the central influent stream end 3 means central influent stream end 3 and refluxes and hold the pressure reduction between 6 to increase.Therefore the flow in all branch lines 4,5 increases.The number percent that flow increases in the branch line 4,5 is approximately identical.
E) performance that pressure descends in the central influent stream end 3 and some d) opposite.
When f) pressure in central authorities reflux end 6 rose, the pressure in the central influent stream end 3 also rose.Central authorities' influent stream end 4 and the pressure reduction between the end 6 of refluxing reduce generally and branch line 4,5 in flow reduce.The number percent that flow reduces in the branch line 4,5 is approximately identical.
G) performance that pressure descended during central authorities refluxed and hold and some f) opposite.

Claims (3)

1. the method for register (1) that is used for the mould (2) of monitoring injection machine or die casting machine, described register (1) comprises influent stream end (3) and the end (6) that refluxes, at least two branch lines (4,5) are being arranged on the influent stream end in parallel and are refluxing between the end on the flow technique, flow sensor (8,8') is set at least in each of described two branch lines (4,5), it is characterized in that, by the measurement data that is relatively provided by flow sensor (8,8') pressure surge in register (1) and the existence of leakage are distinguished.
2. according to the method for claim 1, it is characterized in that, pressure transducer (9) or flow sensor (10) are set, in the pressure transducer of relatively considering when being arranged on the measurement data that flow sensor in described at least two branch lines (4,5) (8,8') provides in the influent stream end, to arrange or the measurement data of flow sensor in influent stream end (3).
3. according to the method for claim 1 or 2, it is characterized in that, be inferred as the pressure surge in the register (1) at least when flow changes pro rata in described two branch lines (4,5) and cross the leakage that is inferred as when changing greatly in this branch line (4,5) in one of described at least two branch lines (4,5) ratio.
CN201210572894.2A 2012-01-02 2012-12-25 For monitoring the method for the register of the mould of injection machine or die casting machine Active CN103185656B (en)

Priority Applications (2)

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ATA4/2012 2012-01-02
ATA4/2012A AT511110B1 (en) 2012-01-02 2012-01-02 leak detection

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CN103185656B CN103185656B (en) 2016-02-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103963255A (en) * 2013-02-04 2014-08-06 恩格尔奥地利有限公司 Temperature Control Device For A Shaping Tool And Method Of Controlling The Same
CN105404329A (en) * 2014-07-03 2016-03-16 恩格尔奥地利有限公司 Method and device for regulating temperature of molding die

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AT513042B1 (en) 2012-12-21 2014-01-15 Engel Austria Gmbh Device for tempering medium supply and method for monitoring the same
AT513870B1 (en) * 2013-02-04 2014-12-15 Engel Austria Gmbh Method for tempering a mold
GB2520750A (en) * 2013-11-29 2015-06-03 System Sentinels Ltd Detector

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CN201169046Y (en) * 2007-11-23 2008-12-24 北京中拓机械有限责任公司 Apparatus for rapidly controlling injection mold temperature change
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103963255A (en) * 2013-02-04 2014-08-06 恩格尔奥地利有限公司 Temperature Control Device For A Shaping Tool And Method Of Controlling The Same
US9718219B2 (en) 2013-02-04 2017-08-01 Engel Austria Gmbh Temperature control device for a shaping tool and method of controlling same
CN105404329A (en) * 2014-07-03 2016-03-16 恩格尔奥地利有限公司 Method and device for regulating temperature of molding die
CN105404329B (en) * 2014-07-03 2018-09-11 恩格尔奥地利有限公司 Method and apparatus for carrying out temperature adjustment to molding die

Also Published As

Publication number Publication date
AT511110B1 (en) 2012-09-15
DE102012023041B4 (en) 2021-06-02
AT511110A4 (en) 2012-09-15
DE102012023041A1 (en) 2013-07-04
CN103185656B (en) 2016-02-10

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