CN104416846A - Method for operating closing unit of forming machine - Google Patents

Method for operating closing unit of forming machine Download PDF

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Publication number
CN104416846A
CN104416846A CN201410512461.7A CN201410512461A CN104416846A CN 104416846 A CN104416846 A CN 104416846A CN 201410512461 A CN201410512461 A CN 201410512461A CN 104416846 A CN104416846 A CN 104416846A
Authority
CN
China
Prior art keywords
force
activity
closing force
cramping plate
mold cramping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410512461.7A
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Chinese (zh)
Other versions
CN104416846B (en
Inventor
H·蔡德尔霍费尔
A·洛纳克尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engel Austria GmbH
Original Assignee
Engel Austria GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ATA652/2013 priority Critical
Priority to ATA652/2013A priority patent/AT514317B1/en
Application filed by Engel Austria GmbH filed Critical Engel Austria GmbH
Publication of CN104416846A publication Critical patent/CN104416846A/en
Application granted granted Critical
Publication of CN104416846B publication Critical patent/CN104416846B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B29C45/76Measuring, controlling or regulating
    • B29C45/7653Measuring, controlling or regulating mould clamping forces
    • 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
    • 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
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/67Mould opening, closing or clamping devices hydraulic
    • B29C45/6707Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
    • B29C45/6714Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
    • B29C45/6728Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould the separate element consisting of coupling rods

Abstract

The invention relates to a method for operating a closing unit of a forming machine. Closing force is applied to a movable mold clamping plate (2) in regulation or control modes by means of a closing mechanism (3). The method is characterized in that quality-induced support force or at least one friction force of at least one beam (6), the movable mold clamping plate (2) of the movable mold clamping plate (2) integrated with a mold half body (7) is measured and support force or friction force can be taken into consideration for controlling or regulating closing force.

Description

For running the method for the closed cell of forming machine
Technical field
The present invention relates to a kind of method running the closed cell of forming machine, wherein, apply closing force to movable mold cramping plate in the mode regulated or control by means of closing force mechanism.At this, injection machine, die casting machine, forcing press etc. can be understood as forming machine.
Background technology
On the forming machine in modern times, high request is proposed to the accuracy to size of that manufactures parts.To such an extent as to the mold cramping plate of activity or the mold half that the is mounted thereon closing force that must perform and the quality tool of closing motion change curve to product have a significant impact.
Such as when injection press, the closed cell of injection machine must control like this or regulate, and a die slot determined between mold half is controllably closed, and the mold cramping plate of result activity should experience the uphill process of closing force.This method also has special form, and wherein, perhaps die slot was opened repeatedly before the cooling of plastics slurry again.
This shows, speed change curves and closing force change curve have great impact to the product made.
Above-mentioned situation causes, in order to the time of setting up required for such technique constantly increases, because must carry out multiple series of tests, till finding optimum change curve.Because the situation of mold half inside is often quite complicated in such process, it is limited to simulate the help that can provide here, because standing procedure is, once simulation is only carried out on a kind of injection moulding slurry of speed change curves given in advance and power change curve.But whether the change curve of input is consistent always not clearly with reality in this simulation.Only having enforcement many times to explore could prior remedial measure with series of tests.
Summary of the invention
Task of the present invention is, proposes a kind of method, and the speed change curves that it experiences flexible mould clamping plate or power change curve provide control or the adjustment of improvement.
This task method of the feature with claim 1 solves.
This so realizes, namely measure at least one beam, movable mold cramping plate or activity mold cramping plate together with the holding power caused by quality of mold half or at least one frictional force, and consider this holding power or frictional force in closing force controls or regulates.
At this, "or" is always interpreted as " comprising property ", and that is, the combination of the possibility of being separated by "or" is that nature is admissible and by specifically favourable.
Except improving and controlling or regulate, another advantage of the present invention is, even if can not relatively accurately calculate, at least also can estimate, the absolute closing force occurred between two mold halfs.Make to utilize simulation to become possibility better when setting up technique with this, because the absolute force applied by this machine such as can be used as the boundary condition of reality simulation.
Other favourable embodiments of the present invention define in subordinate claim.
In order to such as balance the impact of the weight of a mold half when vertical closed cell, can specify, this holding power of measurement like this, namely the closing force mechanism of closed cell or rapid moving mechanism maintain the mold cramping plate of at least one beam described or activity on constant height together with mold half, and measure the power for this reason applied by closing force mechanism or rapid moving mechanism.
At this moment can specify, this holding power is determined by means of the one or more pressure sensors at least one hydraulic cylinder of closing force mechanism or rapid moving mechanism.
Relevant this respect, specify in the embodiment of a special recommendation, this holding power is determined by means of the first pressure sensor in the first chamber of at least one hydraulic cylinder described and the second pressure sensor in the second chamber of at least one hydraulic cylinder described, and the value of counter-force is by the mathematic interpolation of the effective piston area weighting of use of the first pressure sensor and the second pressure sensor measurements.Or rather, under most of running status, another chamber of the pressure ratio of one of chamber is much smaller.But, can accurately carry out controlling or regulating, even if effect little so still may produce relevant distortion by the present invention.
Can specify in a preferred form of implementation, at least one frictional force described is measured with the form of the adhesive force of the mold cramping plate of at least one beam described or activity.
This can so realize, in order to measure this adhesive force, measure the gravity of the mold cramping plate of at least one beam described or this activity, the closing force mechanism of this closed cell or rapid moving mechanism make the mold cramping plate of at least one beam described or this activity maintain on constant height, measure the counter-force for this reason applied by closing force mechanism or rapid moving mechanism, and calculate this adhesive force by the difference of this counter-force and this gravitational magnitude.At this moment, the gravity of the mold cramping plate of this beam or this activity was preferably such as measured with crane scale before closed cell assembling.The counter-force that closing force mechanism or rapid moving mechanism apply, can to described by holding power, measure, difference be as previous, and mold half is not arranged on movable mold cramping plate in this case.This embodiment completely based on such supposition, namely mold half existence between the mold cramping plate and beam of activity or occur between beam and guiding device adhesive force impact very little.Naturally the impact of weight on adhesive force of this mold half also can be measured in measuring technique.But for this reason must be known or measure the weight of this mold half.
Another particularly preferred embodiment can be, at least one frictional force described is measured with the form of the force of sliding friction that the mold cramping of at least one beam described or activity is pulled.
Also be applicable at this, before the assembling of this closed cell, the gravity that the mold cramping can measuring at least one beam described or this activity is pulled.Similarly, this motoricity can be measured with being similar to the method for advising for counter-force.The effect of mold half weight is similar to for described by adhesive force.
In order to determine the power making absolute closing force distortion, describe at least three kinds of diverse ways.These methods can adopt separately and in conjunction with employing.At this moment, as in which kind of situation (closed cell of technology characteristics, vertical or level) more reasonable by any method, or which causes the power impact of distortion larger, and this can be judged by those skilled in the art.
Accompanying drawing explanation
With reference to accompanying drawing and explanation relevant therewith, explain other advantages of the present invention and details.Accompanying drawing is as follows:
Fig. 1 is the diagrammatic side view of closed cell when measuring holding power;
Fig. 2 is the diagrammatic side view of closed cell when measuring force of sliding friction;
Fig. 3 is the diagrammatic side view of closed cell when setting up closing force;
Fig. 4 is the schematic diagram of the regulation scheme corresponding to the inventive method.
Detailed description of the invention
Purely in FIG schematically show vertical closed cell 1.It has pressure mechanism 3, and this pressure mechanism can load closing force to movable mold cramping plate 2 by beam 6.In order to the mold cramping plate 2 with beam 6 locking activity, retaining mechanism 13 is set.In the unlocked state, movable mold cramping plate 2 can be moved by means of rapid moving mechanism 4.
The control of pressure mechanism 3 and rapid moving mechanism 4 or regulate by control or adjusting device 5 is carried out.Connection shown between rapid moving mechanism, control or adjusting device and closing force mechanism yes pure illustrative nature.
Not only pressure mechanism 3 but also rapid moving mechanism 4 have hydraulic cylinder 8.
In this embodiment, not only for rapid moving mechanism 4, and for pressure mechanism 3, the structure of hydraulic cylinder is all similar.The difference of hydraulic cylinder 8 is relevant with requirement is only its stroke and effective piston area thereof.
Hydraulic cylinder 8 respectively has first chamber 10 and second chamber 12 at piston rod side, and they can be applied in different pressure separately.The hydraulic pressure wiring of hydraulic cylinder is prior art, thus repeats no more.In the first chamber 10 of each hydraulic cylinder 8, arrange the first pressure sensor 9 and arrange the second pressure sensor 11 in the second chamber 12 of each hydraulic cylinder 8, they are used for measuring the hydraulic pressure in each chamber.First pressure sensor 9 and the second pressure sensor 11 are also connected with control or adjusting device 5.For clarity, they are all not shown.When controlling or adjusting device 5 is formed as adjusting device, the first pressure sensor 9 and the second pressure sensor 11 are used for regulating loop feedback measured value.
In the case of fig. 1, movable mold cramping pull 2 beam 6 and the holding power (namely for closing force be support raw) that applied by rapid moving mechanism 4 and pressure mechanism 3 in forming process of mold half 7 measure apart from each other.For this reason, retaining mechanism 13 unlocks.By holding power first component that the sensor measurement in the hydraulic cylinder 8 of rapid moving mechanism 4 is produced by mold cramping plate 2 and the mold half 7 of activity.Come from the sensor measurement in the hydraulic cylinder 8 of the second component pressure mechanism 3 of beam 6.At this moment, this holding power is obtained as the first and second component sums.
The following describes by the sensor measurement power in these hydraulic cylinders 8: the effective area in the second chamber 12 is slightly less than the effective area in the first chamber 10.Therefore, the determining by the difference of effective area weighting of the value of hydraulic pressure measured by the first pressure sensor 9 and the second pressure sensor 11 of the value of the component of the measurement of this holding power.
In embodiment shown here, all power measured by the pressure sensor in hydraulic cylinder 8 is all carried out with described method.But this and not required that they be so, because the pressure such as from the less chamber of respective pressure can be ignored completely, only have the pressure in another chamber separately just to count the applying of the power of hydraulic cylinder 8 with this.
When the mold cramping of activity pulls 2 and the gravity of beam 6 is known (such as measuring with crane scale before the assembling of this closed cell), movable mold cramping plate or the adhesive force of beam 6 also can be measured by similar method as described above.This adhesive force is mainly caused by the mold cramping plate 2 of activity and the guiding device of beam 6 and the stiction that occurs in hydraulic cylinder.Measure counter-force by the method being similar to holding power, wherein mold half 7 must be removed.At this moment adhesive force can be determined by the difference of counter-force and gravitational magnitude completely simply.
Represent the pure schematic diagram of the closed cell 1 of Fig. 1 in fig. 2 again, wherein, retaining mechanism 13 is in locking state, and mold half 7 has been removed or not yet installed.In order to measure force of sliding friction, movable mold cramping pull 2 and the beam 6 that is locked together with it move with constant speed (downwards).As mentioned above, the motoricity that hydraulic cylinder 8 applies for this reason is measured.In addition, movable mold cramping plate and the gravity of beam 6 must be known.At this moment, this force of sliding friction is determined by the difference of the value of motoricity and gravity.
In this case, during setting up closing force (see Fig. 3), bias force is produced with rapid moving mechanism 4 pairs of pressure mechanisms 3, the embodiment of the measurement force of sliding friction shown in Fig. 2 is favourable, because can obtain the force of sliding friction that (that is when retaining mechanism is locked) occurs during the production cycle exactly.
By just may carry out adjustment or the control of closing force absolute value according to method of the present invention.Corresponding regulation scheme is shown in Fig. 4.At this, first from acting on mold cramping plate sets up dynamic balance with the value of exerting oneself:
-the first rapid movement power FE1, it is determined with the first pressure sensor 9 in the first chamber 10 of the hydraulic cylinder 8 of rapid moving mechanism 4.
-the first thrust FD1, it is determined with the first pressure sensor 9 in the first chamber 10 of the hydraulic cylinder 8 of closing force mechanism 3.
-the second rapid movement power FE2, it is determined with the second pressure sensor 11 in the second chamber 12 of the hydraulic cylinder 8 of rapid moving mechanism 4.
-the second thrust FD2, it is determined with the second pressure sensor 11 in the second chamber 12 of the hydraulic cylinder 8 of closing force mechanism 3.
The gravity FB of mold cramping plate 2 together with mold half 7 of-activity, it is determined with the pressure sensor of rapid moving mechanism 4.
The gravity FH of-beam 6, it is determined with the pressure sensor of closing force mechanism 3.
-frictional force FR, depends on the circumstances, and uses force of sliding friction or stiction.
Compare as the resultant closing force actual value FS-IST of dynamic balance and operating personnel closing force rated value FS-SOLL given in advance.This result compared is input control or adjusting device 5 again, is formed as adjusting device in this case.This has an impact to adjustment link 15, and in the above-described embodiments, this adjustment link is the regulating valve of the hydraulic pressure in the second chamber 12 of the hydraulic cylinder 8 of closing force mechanism 3.
Self-evident, under the pressure in other chambers of hydraulic cylinder 8 is in similar control or regulation mechanism.The adjustment of the first rapid movement power FE1 and the first thrust FD1 especially can be carried out like this, make at least one rising in these two power, if the pressure drop in the second chamber 12 of the hydraulic cylinder 8 of closing force mechanism 3 must lower than certain threshold value, during lower than this threshold value, the second thrust FD2 is difficult to accurately control or regulate.
The regulation scheme introduced allows to regulate absolute closing force.Its advantage is, simulation or the result calculated can be directly used in the foundation of process.Therefore this can be avoided the series of tests optimizing closing force change curve in some cases completely.
For object of the present invention, movable mold cramping pulls 2 to contribute to supporting each structure of closing force all to can be considered.Example is for this reason retaining mechanism 13.

Claims (8)

1. for running the method for the closed cell of forming machine, wherein, apply closing force to movable mold cramping plate (2) in the mode regulated or control by means of closing force mechanism (3), it is characterized in that, measure at least one beam (6), movable mold cramping plate (2) or activity mold cramping plate (2) together with the holding power caused by quality of mold half (7) or at least one frictional force, and in control or regulate during this closing force and consider described holding power or frictional force.
2. method according to claim 1, it is characterized in that, when applying vertical closed closed cell (1), this holding power of measurement like this, namely the mold cramping plate (2) of described at least one beam (6) or described activity maintains on constant height together with mold half (7) by the closing force mechanism (3) of described closed cell (1) or rapid moving mechanism (4), and measures the power for this reason applied by closing force mechanism (3) or rapid moving mechanism (4).
3. method according to claim 2, it is characterized in that, described holding power is determined by means of the one or more pressure sensors (9,11) at least one hydraulic cylinder (8) of closing force mechanism (3) or rapid moving mechanism (4).
4. method according to claim 3, it is characterized in that, described holding power is determined by means of the first pressure sensor (9) in first chamber (10) of described at least one hydraulic cylinder (8) and the second pressure sensor (11) in second chamber (12) of described at least one hydraulic cylinder (8), and the value of counter-force is determined by the difference of the effective piston area weighting of use of the first pressure sensor measurements and the second pressure sensor measurements.
5. according to the method for in Claims 1-4, it is characterized in that, at least one frictional force described is measured with the form of the adhesive force of the mold cramping plate (2) of described at least one beam (6) or described activity.
6. method according to claim 5, it is characterized in that, when applying vertical closed closed cell (1), in order to measure this adhesive force, measure the gravity of the mold cramping plate (2) of described at least one beam (6) or described activity, the mold cramping plate (2) of described at least one beam (6) or described activity maintains on constant height by the closing force mechanism (3) of closed cell (1) or rapid moving mechanism (4), measure the counter-force for this reason applied by closing force mechanism (3) or rapid moving mechanism (4), this adhesive force is determined by the difference of the value of this counter-force and the value of this gravity.
7. according to the method for in claim 1 to 6, it is characterized in that, at least one frictional force described is measured with the form of the force of sliding friction of the mold cramping plate (2) of described at least one beam (6) or described activity.
8. method according to claim 7, it is characterized in that, when applying vertical closed closed cell (1), in order to determine force of sliding friction, measure the gravity of the mold cramping plate (2) of described at least one beam (6) or described activity, the mold cramping plate (2) of described at least one beam (6) or activity moves with constant speed by means of closing force mechanism (3) or by means of rapid moving mechanism (4), now measure the motoricity for this reason applied by closing force mechanism (3) or rapid moving mechanism (4), and this force of sliding friction is determined by the difference of the value of gravity and the value of motoricity.
CN201410512461.7A 2013-08-21 2014-08-21 For the method for the closed cell for running forming machine Active CN104416846B (en)

Priority Applications (2)

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ATA652/2013 2013-08-21
ATA652/2013A AT514317B1 (en) 2013-08-21 2013-08-21 Method for operating a closing unit

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CN104416846B CN104416846B (en) 2017-12-26

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AT (1) AT514317B1 (en)
DE (1) DE102014012096A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109664455A (en) * 2018-12-27 2019-04-23 佛山市顺德区震旭塑料机械有限公司 A kind of injection molding machine with the secondary adjustment mold of inside groove
CN111186106A (en) * 2018-11-14 2020-05-22 恩格尔奥地利有限公司 Molding machine and mold clamping unit thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223822A1 (en) * 2017-12-27 2019-06-27 Arburg Gmbh + Co. Kg Mold-closing unit for an injection molding machine and method for locking a power transmission element

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US20080174038A1 (en) * 2007-01-24 2008-07-24 Husky Injection Molding Systems Ltd. Platen Assembly, Molding System and Method for Platen Orientation and Alignment
CN203510597U (en) * 2013-08-29 2014-04-02 广州天沅橡胶制品有限公司 Host machine of bicolor liquid silicone rubber injection moulding machine

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JPH0452119A (en) * 1990-06-19 1992-02-20 Japan Steel Works Ltd:The Injection molding method and apparatus
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JP2000211001A (en) * 1999-01-27 2000-08-02 Meiki Co Ltd Method for injection press molding and injection press molding machine
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Publication number Priority date Publication date Assignee Title
CN111186106A (en) * 2018-11-14 2020-05-22 恩格尔奥地利有限公司 Molding machine and mold clamping unit thereof
CN111186106B (en) * 2018-11-14 2022-02-08 恩格尔奥地利有限公司 Molding machine and mold clamping unit thereof
CN109664455A (en) * 2018-12-27 2019-04-23 佛山市顺德区震旭塑料机械有限公司 A kind of injection molding machine with the secondary adjustment mold of inside groove

Also Published As

Publication number Publication date
DE102014012096A1 (en) 2015-02-26
CN104416846B (en) 2017-12-26
AT514317B1 (en) 2014-12-15
AT514317A4 (en) 2014-12-15

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