EP3790689A1 - Modul für eine druckgussvorrichtung - Google Patents
Modul für eine druckgussvorrichtungInfo
- Publication number
- EP3790689A1 EP3790689A1 EP19710583.6A EP19710583A EP3790689A1 EP 3790689 A1 EP3790689 A1 EP 3790689A1 EP 19710583 A EP19710583 A EP 19710583A EP 3790689 A1 EP3790689 A1 EP 3790689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- filling chamber
- cylinder unit
- module
- base
- 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
Links
- 238000004512 die casting Methods 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 26
- 230000008569 process Effects 0.000 description 25
- 238000002347 injection Methods 0.000 description 15
- 239000007924 injection Substances 0.000 description 15
- 238000010119 thixomolding Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2061—Means for forcing the molten metal into the die using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/203—Injection pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
- B22D17/2281—Sprue channels closure devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
Definitions
- the invention relates to a module for a die-casting device. Furthermore, the invention relates to a method for producing a molded part with a die casting device.
- Die-casting devices make it possible to produce molded parts from a light metal or a light metal alloy, for example an aluminum alloy or magnesium alloy, with high precision and in high quantities in a short time. Due to the quantitatively high output of moldings with die casting devices, these are widely used.
- Thixomolding devices with short cycle times of a few seconds require considerable process know-how, especially since the injected material is in the thixotropic state and must first be prepared for this and then also injected.
- the comparatively complex process technology can lead to a considerable scrap, but also to a machine downtime.
- the complexity of this technology is also reflected in the fact that there are only a few companies worldwide Produce thixomolding devices. Although fundamentally improved molded parts can be produced with a thixomolding process, this has become
- the object of the invention is to provide a module for a
- Another object is to provide a method for producing a molded article with a
- a module for a die-casting device comprising a base which is fastened to a clamping plate of the die-casting device, a screw-cylinder unit for producing a thixotropic material and a filling chamber, wherein the screw-cylinder unit and the filling chamber are arranged directly or indirectly on the base so that thixotropic material produced by the screw-cylinder unit can be conveyed into the filling chamber.
- An advantage achieved by the invention is that a module is provided which can be easily integrated into existing die-casting devices. This makes it possible to convert a die-casting device within a short time from the usual die-casting process to a thixomolding process. Thus, the plurality of die casting devices already in use for the production of
- Moldings are used by thixomolding.
- the invention also makes use of the fact that the module is fastened to a clamping plate of the die-casting device or is fastened there in use.
- the die casting device thus does not require any major retooling, but it can only the module of the invention to a clamping plate of the die casting device, which is closer to the piston required for injection, frontally attached.
- the module can thus be arranged between the clamping plates and thus in the actual tool cabin.
- the two mold halves of the casting tool for forming a mold cavity can then be arranged in a conventional manner on the opposite clamping plate and the base of the module. It is thus due to the arrangement of the module created between the clamping plates a kind of double bottom. This concept makes it possible to minimize the conversion effort.
- the worm-cylinder unit has a cylinder and a worm.
- the worm serves to bring supplied material, usually a metal or an alloy, into a thixotropic state with which after closing of the mold halves is to be injected into the mold cavity.
- a temperature control unit is provided.
- the temperature control unit is usually designed as a heater.
- the heater can be arranged on the outside of the worm-cylinder unit. For example, it may be a
- the filling chamber is usually to temper. This can be the
- Temperature control unit of the screw-cylinder unit also on an outside of the
- Extend filling chamber it can be provided for the filling chamber, a further temperature control, which is separately controlled by the temperature control unit for the screw-cylinder unit.
- the tempering unit for the filling chamber may in turn be a resistance heater.
- the one or more tempering units are designed so that in the screw-cylinder unit or the filling chamber, the temperatures required for the processing of light metals or
- Light metal alloys can be achieved, for example in the temperature range of 400 ° C to 700 ° C.
- thixotropic material is produced by the screw-cylinder unit and introduced into the filling chamber.
- a screw of the screw-cylinder unit is rotatably mounted for this purpose.
- a motor is provided for the rotation of the screw.
- the worm is axially displaceable. Since the screw is axially displaceable in the cylinder, created thixotropic material can be forced forward into the filling chamber, in which the screw is displaced axially in the direction of the filling chamber. It has been shown that an excellent metering of the filling chamber is possible by the corresponding axial displacement. It is also possible that the screw is basically only rotated and the Filling chamber is filled over the resulting metering pressure. The screw then only needs to be moved a few millimeters, namely to the transition to
- the filling chamber has a sealing seat on which a first end of the screw can be adjusted.
- the sealing seat can be designed tapering, in particular viewed from the direction of the screw. If the worm is moved to the sealing seat by axial displacement, a backflow of material into the worm-cylinder unit is avoided. It is understood that a first end of the screw for this purpose is formed with an end-side stop surface, which corresponds to the sealing seat of the filling chamber, so that the desired sealing function is achieved.
- the screw-cylinder unit can be arranged arbitrarily with respect to the base and thus ultimately also to the die casting device.
- the screw-cylinder unit is arranged vertically. But it is also possible to store the screw-cylinder unit horizontally and to fill the filling chamber from one side.
- the filling chamber is usually arranged horizontally so that a generally horizontally arranged piston of a die casting device to be converted can be introduced without additional conversion measures in this.
- the base can be constructed relatively slim, subject to the forces acting. An approximately plate-shaped structure is preferred since the module then flat on the
- Clamp plate can be attached.
- the base can have a central clearance
- This space extends at least to the filling chamber, so that the screw-cylinder unit to the
- Filling chamber can be coupled.
- a first lifting device may be provided, with which the screw of the Worm-cylinder unit is axially displaceable.
- This may be a hydraulic or pneumatic lifting device.
- the first lifting device may be mounted on the base or a component fixedly connected therewith, so that the relative displacement of the screw relative to the cylinder of the screw-cylinder unit is made possible.
- the worm-cylinder unit can be connected to the base in various ways.
- the screw-cylinder unit may be mounted on a head-side plate which is fixed to the base.
- a first lifting device can then be mounted on the plate so that the screw of the screw-cylinder unit relative to the plate and thus to the base and in turn to the filling chamber, which is mounted on the base, is displaceable.
- the screw-cylinder unit is mounted on the filling chamber.
- the screw-cylinder unit may be mounted on an outer part of the filling chamber, wherein the outer part is connected to the base.
- This variant has the advantage that an inner part of the filling chamber can be detachably connected by displacement to the outer part of the filling chamber.
- a second lifting device is provided, with which the worm-cylinder unit is axially displaceable relative to the outer part of the filling chamber, the inner part of the filling chamber can be removed with a corresponding axial displacement of the worm-cylinder unit. This is important insofar as this inner part is subject to the highest wear due to the high pressure prevailing during injection and the thixotropic material used. By a corresponding stroke movement and thus decoupling of the screw-cylinder unit from the filling chamber whose inner part is released and can be removed from the front and replaced by a mint interior part.
- a die-casting device can be equipped with a module according to the invention.
- the further object of the invention is achieved by a method for producing a molded part with a die casting device with a module according to the invention.
- a procedurally achieved advantage is the fact that with a conventional die casting machine, which is retrofitted with a module according to the invention, molded parts can be prepared in a thixomolding process. It can thus be created high-quality moldings in large quantities.
- Plugging occurs. This has proven to be advantageous in terms of accurately metering thixotropic material into the filling chamber. Between filling chamber and mold cavity, a plug can form in the usual way at the end of the nozzle during or at the conclusion of the injection process.
- Fig. 1 shows a first variant of a module
- Fig. 2 is a side view of the module of FIG. 1;
- FIG. 3 shows a rear side of the module according to FIG. 1;
- Fig. 4 is a perspective view of the module of FIG. 1;
- FIG. 5 shows a section of the module along the line V-V in Fig. 3.
- FIG. 6 shows a further section through the module according to FIG. 1;
- FIG. 7 shows a pressure casting apparatus with a module according to FIG. 1;
- FIG. 14 shows a further cross section of the module according to FIG. 13.
- a first variant of a module 1 which can be used to convert a conventional die casting apparatus D1 (FIG. 7) so that thixotropic material can be injected into one or more mold cavities to form corresponding moldings to create.
- the module 1 can already be integrated in a new die casting device D1 or delivered with it.
- the module 1 has a base 2.
- the base 2 may be rectangular or as shown formed approximately square. Other basic forms of the base 2 are
- the base 2 is formed as small as possible, especially as the base 2 serves primarily to provide a basis for a screw-cylinder unit 3 and a filling chamber 4 and their coupling to a clamping plate D2 a die casting device To enable D1. Furthermore, the base 2 receives a mold, which is why the base 2 has the size of the platen D2, if possible. As can be seen from FIG. 4, the base 2 is designed approximately with a constant thickness and has a central clearance 22. Furthermore, openings 23 are provided which serve to suitably
- Substantially same thickness is formed, preferably a central clearance 22 and a recess. In this recess extends the screw-cylinder unit 3, which projects vertically downwards. If injected from one side, the situation shown in Fig. 1 would be rotated 90 ° to the left or right. However, a vertical arrangement is also preferred for a constant supply of material from the screw-cylinder unit 3 into the filling chamber 4.
- a piston D4 a die casting device D1 can project into the filling chamber 4 after fastening the module 1 to a clamping plate D2.
- the worm-cylinder unit 3 is mounted on a head-side plate 7, which in turn is in communication with the base 2. Furthermore, a motor 8 is indirectly mounted on the plate 7 via an intermediate plate 71 which is axially displaceable.
- the worm cylinder unit 3 comprises an outside cylinder 31 in which a worm 32 is arranged.
- the worm 32 can be rotated by the motor 8.
- the screw 32 is axially displaceable by the provided first lifting device 5 in the cylinder 31, wherein the intermediate plate 71 together with the motor 8 mounted thereon is displaced with a corresponding axial displacement.
- the filling chamber 4 is mounted on the base 2 and arranged vertically
- Screw-cylinder unit 3 releasably connected.
- the filling chamber 4 extends, as can be seen in particular from FIG. 2, beyond the base and comprises an end-side nozzle 43, which opens into a mold half during an injection process.
- the filling chamber 4 extends from the nozzle 43 to an opposite end of the filling chamber 4, which serves to receive a piston D4, which is part of a conventional
- Die casting device D1 is.
- the interaction of the screw-cylinder unit 3 with the filling chamber 4 can be further explained.
- the worm 32 extends inside the cylinder 31 of the worm cylinder unit 3.
- the filling chamber 4 has a corresponding sealing seat 44 for receiving the first end 321 of the screw 32.
- the sealing seat 44 is preferably formed, from the perspective of the screw 32, also tapered. This makes it possible to prevent a back flow of thixotropic material from the filling chamber 4 in the screw-cylinder unit 3 back in an injection process, which will be explained.
- the screw 32 By the first lifting device 5, the screw 32 can be moved within the cylinder 31 up and down. With the motor 8, which is in operative connection with the worm 32, a rotational movement or rotation of the worm 32 can be generated.
- a die casting apparatus D1 is shown, to which a module 1 is attached. As can be seen, the module 1 at a first platen D2 of
- Die casting device D1 attached, for which the mentioned openings 23 serve on the base 2.
- the module 1 is fixed to the stationary platen D2 and is located opposite a movably mounted platen D3 of the die casting apparatus D1.
- the piston D4 of the die casting device D1 engages in the filling chamber 4 of the module 1.
- the two required mold halves are still mounted on the clamping plates D2, D3.
- thixotropic material are injected into a closed mold cavity, for what initially, for the production of the mold cavity, the movable platen D3 mounted there with the mold half to the stationary platen D2 with the there on Module 1 mounted mold half is made. Thereafter, the injection process can take place. This process is explained below.
- Fig. 8 to 12 the injection process for the preparation of a molded part of thixotropic material by means of a conventional die casting machine D1, converted with a module 1 is shown by way of example.
- Fig. 8 shows an initial state in which the screw 32 is locked, which corresponds to the state at the end of an injection process.
- the worm 32 is then unlocked and rotated by the motor 8.
- a granules or powder is metered into the screw-cylinder unit 3.
- the screw 32 and a temperature set in the screw-cylinder unit 3 via heaters not shown the granulate or powder provided is brought into the thixotropic state.
- FIGS. 13 and 14 cross sections of a variant of the module 1 are shown.
- This variant of the module 1 differs above all from the mounting of the worm-cylinder unit 3.
- the worm Cylinder unit 3 mounted on the filling chamber 4.
- the filling chamber 4 has an outer part 41 and an inner part 42.
- the outer part 41 is connected to the base 2, wherein the filling chamber 4 is guided, as in the first and all other alternative variants through a base opening 21 and protrudes from this preferably with the nozzle 43.
- a second lifting device 6 is provided.
- This may in turn be a hydraulic or pneumatically operated lifting device 6.
- alternative drives possible, for example, a spindle drive.
- a spindle drive As in the first
- Variant variant protrudes the screw-cylinder unit 3 extending vertically into a central space 22 of the base 2.
- the entire screw-cylinder unit 3 can be axially displaced as such .
- the second lifting device 6 is designed as a hydraulic lifting device, the piston, but the housing and thus a connected carrier 9 together with guide means 10, which are in communication with the head-side plate 7, shifts when acted upon by a hydraulic means.
- This inner part 42 is that part which is subject to the highest wear in operation, because in its area when injecting the highest forces act. By an axial stroke of the screw-cylinder unit 3, this inner part 42 can be easily released and can be deducted towards the front. It then only needs a new wear part or inner part 42 are inserted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50394/2018A AT521217B1 (de) | 2018-05-11 | 2018-05-11 | Modul für eine Druckgussvorrichtung |
PCT/AT2019/060072 WO2019213678A1 (de) | 2018-05-11 | 2019-03-06 | Modul für eine druckgussvorrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3790689A1 true EP3790689A1 (de) | 2021-03-17 |
EP3790689B1 EP3790689B1 (de) | 2024-01-17 |
EP3790689C0 EP3790689C0 (de) | 2024-01-17 |
Family
ID=65763219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19710583.6A Active EP3790689B1 (de) | 2018-05-11 | 2019-03-06 | Modul für eine druckgussvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US11167342B2 (de) |
EP (1) | EP3790689B1 (de) |
CN (1) | CN112437705B (de) |
AT (1) | AT521217B1 (de) |
WO (1) | WO2019213678A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116020997B (zh) * | 2022-12-29 | 2024-04-26 | 山东客乐思新材料科技有限公司 | 一种石板表面的花纹压铸方法及压铸装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2825558B2 (ja) | 1989-10-25 | 1998-11-18 | 株式会社日立製作所 | 組成物及びこの樹脂組成物を使用した多層プリント回路板の製造方法 |
DE4121961A1 (de) * | 1991-06-28 | 1993-01-07 | Siemens Ag | Schaltungsanordnung zur energieversorgung von feldgeraeten |
JP3138653B2 (ja) * | 1997-02-25 | 2001-02-26 | 三山化成株式会社 | 射出機 |
US6520762B2 (en) * | 2001-02-23 | 2003-02-18 | Husky Injection Molding Systems, Ltd | Injection unit |
CA2453397A1 (en) * | 2003-01-27 | 2004-07-27 | Wayne Liu (Weijie) W. J. | Method and apparatus for thixotropic molding of semisolid alloys |
JP2004243337A (ja) | 2003-02-12 | 2004-09-02 | Toshiba Mach Co Ltd | 成形装置 |
CN101181736B (zh) * | 2007-12-07 | 2011-05-18 | 华中科技大学 | 一种金属零件的半固态流变成形方法及其装置 |
AT512229B1 (de) | 2011-11-10 | 2014-10-15 | Mold Thix Consulting Bueltermann Gmbh | Vorrichtung, anlage und verfahren zum druckgiessen von metallischem material im thixotropen zustand |
SG2013090568A (en) * | 2013-12-06 | 2015-07-30 | Pratt & Whitney Services Pte Ltd | Die casting machine shot sleeve |
-
2018
- 2018-05-11 AT ATA50394/2018A patent/AT521217B1/de active
-
2019
- 2019-03-06 WO PCT/AT2019/060072 patent/WO2019213678A1/de active Application Filing
- 2019-03-06 EP EP19710583.6A patent/EP3790689B1/de active Active
- 2019-03-06 CN CN201980045807.8A patent/CN112437705B/zh active Active
- 2019-03-06 US US17/051,647 patent/US11167342B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2019213678A1 (de) | 2019-11-14 |
US11167342B2 (en) | 2021-11-09 |
US20210220908A1 (en) | 2021-07-22 |
AT521217A1 (de) | 2019-11-15 |
EP3790689B1 (de) | 2024-01-17 |
CN112437705B (zh) | 2022-08-16 |
AT521217B1 (de) | 2021-02-15 |
EP3790689C0 (de) | 2024-01-17 |
CN112437705A (zh) | 2021-03-02 |
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