EP3233332A1 - Metal injection nozzle for injection molding a liquid metal component - Google Patents
Metal injection nozzle for injection molding a liquid metal componentInfo
- Publication number
- EP3233332A1 EP3233332A1 EP15822909.6A EP15822909A EP3233332A1 EP 3233332 A1 EP3233332 A1 EP 3233332A1 EP 15822909 A EP15822909 A EP 15822909A EP 3233332 A1 EP3233332 A1 EP 3233332A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- metal
- base part
- distributor element
- nozzle according
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 53
- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 238000001746 injection moulding Methods 0.000 title description 8
- 229910001338 liquidmetal Inorganic materials 0.000 title description 2
- 239000000155 melt Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005507 spraying 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
- B22D17/2023—Nozzles or shot sleeves
-
- 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
- B22D17/2038—Heating, cooling or lubricating the injection unit
Definitions
- the invention relates to a metal injection nozzle for injection molding of a liquid metal component, with a nozzle tube which forms a melt channel and which can be heated by means of at least one nozzle tube heater, and with a nozzle head, the at least one nozzle opening for the
- a prefabricated component which may for example consist of plastic.
- a nozzle for spraying metal which has a single nozzle opening, which can be closed by means of a needle valve.
- the nozzle opening is formed in a nozzle head, which can be cooled by means of a cooling device, so that the metal located in the sprue area solidifies and can be liquefied again by heating in a later process step. It has been found that in practice it is often desired to change the number and / or the position of the nozzle openings as a function of the component to be sprayed. In the case of the metal spray nozzle according to DE 10 2012 009 790 A1, it is necessary to remove the nozzle in its entirety, which is not only time-consuming, but also expensive.
- the invention has for its object to provide a metal spray nozzle of the type mentioned, which is adaptable in a simple manner to different requirements with respect to the components to be produced.
- a metal spray nozzle with the features of claim 1. It is provided that the nozzle head is at least partially interchangeable and a base part, in which a communicating with the melt channel passage channel is formed, and a downstream of the base disposed distribution element, wherein in the distributor element a plurality of branch channels are formed, each open in a nozzle opening.
- the basic idea is to not form the nozzle tube of the metal injection nozzle, which forms a melt channel, integrally with the nozzle head, but to attach the nozzle head to the nozzle tube either completely or at least partially interchangeable. In this way, it is possible by replacing the nozzle head, the number of nozzle openings and also their
- the nozzle head is constructed at least in two parts and has a base part, in which a passage channel communicating with the melt channel is formed.
- At least one heating element may be integrated in the base, preferably an electrical resistance heating element.
- heating channels can also be provided which are flowed through by a hot fluid and in particular a hot liquid.
- a distributor element On the side facing away from the nozzle tube of the base and thus downstream of the base, a distributor element is arranged, for example in the form of a distributor plate.
- the distributor element a plurality of branch channels are formed, each opening in a nozzle opening and are connected on its upstream side with the passageway and thus with the melt channel.
- the distributor element is preferably held exchangeably on the base part.
- either the nozzle head in its entirety, ie including the base part and the distributor element can be exchanged, but it is also possible to leave the base, and only to replace the distributor element.
- the base with its optionally integrated heating elements can be used with different distribution elements, as the base substantially forms a support function for the distribution element and ensures that the molten metal is maintained at a desired temperature. If very high temperatures are required for special metal melts, it may be necessary to replace the base part, which is ensured by the detachable attachment.
- a distributor chamber is formed, which is preferably connected to the passage channel of the base part or directly connected to this and branch off from the branch channels.
- the number of branch channels is basically arbitrary, but has proven in practice to provide three to seven and preferably four or five branch channels. However, the invention is not limited thereto.
- the distributor elements can have different shape and size. Additionally or alternatively also distribution elements with a different number and mutual arrangement of branch channels and nozzle openings can be used.
- at least one cooling element is arranged in the distributor element.
- the cooling element can be, for example, one or more cooling channels through which a cooled fluid, in particular a fluid flows, or else an electrical cooling element, for example a Peltier element.
- each branch channel is assigned at least one cooling element.
- the cooling elements can be used to cool the molten metal in the area of the nozzle opening to the extent that it solidifies and thus the metal spray nozzle is sealed in a thermal manner. If the injection molding operation is to be continued, the cooling of the molten metal is interrupted and / or the molten metal is heated, whereby it liquefies again and the nozzle openings are released again.
- cooling elements individually and / or in groups are controlled. This makes it possible, if necessary, to close only some of the nozzle openings by cooling and solidification of the molten metal and / or if necessary only some of the closed by the solidified molten metal nozzle openings by liquefaction of
- nozzle heads or distributor elements which have different geometric configurations on their end remote from the base part in which the nozzle openings are formed.
- the end face of the distributor element facing away from the base part is planar and preferably formed at a right angle to the exit direction of the molten metal.
- the front side facing away from the base part of the distributor element has at least one protruding projection, in which at least one nozzle opening is formed.
- the front side of the nozzle head and the distributor element is structured in a terraced manner and can thus be changed with respect to the flow paths of the molten metal within the nozzle head and also adapted to the geometry of a component to be sprayed.
- the invention thus describes a replaceable
- Nozzle head with preferably several branch channels for distributing the solder melt.
- the branch channels are surrounded by integrated channels arranged in a plane (2D) or in the space (3D) for a cooling medium that follows
- the nozzle head is preferably cooled to a temperature of 5 ° C to 100 ° C below the solidus temperature.
- the nozzle head is heated later preferably at 10 ° C to 150 ° C above the liquidus temperature.
- the sections to the component to be sprayed under ⁇ have different cross-sections.
- the front side of the nozzle head can be formed two-dimensionally as well as three-dimensionally.
- Fig. 1 is a longitudinal section through a
- Fig. 2 is the view II of the front side of
- Fig. 3 is a Fig. 2 corresponding view of an alternative embodiment
- Fig. 4 is an end view of another
- Fig. 5 is a Fig. 4 corresponding end face
- FIG. 1 shows a longitudinal section through a metal spray nozzle 10 according to the invention.
- the metal spray nozzle 10 has a nozzle pipe 11 shown only partially, in which a melt channel 12 is formed, to which a molten metal is supplied in a manner not shown in more detail, as indicated by the arrow S. is.
- staggered nozzle tube heaters 13 are provided, which are preferably electrical resistance heaters.
- left end of the nozzle tube 11 is connected to a nozzle head 14.
- the nozzle head 14 has an adjacent to the nozzle tube 11 base 15, in which a through channel 18 is formed, which is connected to the
- Melting channel 12 of the nozzle tube 11 is aligned and steplessly merges into this.
- the base 15 are several
- Heating elements 16 are arranged, with which the metal melt located in the passage 18 can be heated or maintained at a predetermined temperature.
- a recess 21 is formed in the base part 15.
- a distributor element 17 which may be formed, for example, plate-shaped, has a complementary shape to the recess 21 from ⁇ extension 22 which can be inserted into the recess 21 with tight fit.
- the distributor element 17 can be fixed to the base part 15, wherein the engagement of the insert 22 in the recess 21 ensures that the distributor element 17 is correctly positioned relative to the base part 15.
- a distribution chamber 19 is formed on the upstream side, which communicates with the through-channel 18 and smoothly merges into it. From the distribution chamber 19 branch several Branch channels 20 from which, facing away from the base 15, located downstream end face 26 of the distributor element 17 each open to form a nozzle opening 25.
- FIG. 2 shows the frontal view II of the metal injection nozzle 10 according to FIG. 1. It can be seen that four branch channels 20 with four nozzle openings 25 are provided in the illustrated embodiment, wherein the nozzle openings 25 lie on a circular arc and are offset from each other by 90 ° ,
- Figure 3 shows an alternative embodiment with respect to the arrangement of the nozzle openings 25, wherein these are arranged in an arbitrary pattern on the end face 26 of the distributor element 17.
- FIG. 4 shows a distributor element 17 with a fundamentally different shape, in that it is designed as an elongated cuboid in which five nozzle openings 25 are uniformly distributed in a row over the height.
- FIG. 5 shows a modification of the distributor element 17 according to FIG. 4, wherein now the five nozzle openings 25 are formed in any relative orientation.
- the branch channels 20 and the nozzle openings 25 are dimensioned so that at the nozzle openings in each case the same amount of molten metal emerges.
- the distributor element 17 to be detached from the base part 15 and replace it with another distributor element, which is preferably a different shape and size and / or a different number and Arrangement of branch channels and nozzle openings has.
- Cooling elements 23 activated in the distributor element 17, wherein the molten metal, which is located in the region of the nozzle openings 25 within the branch channels 20, solidifies, whereby the metal spray nozzle is closed.
- the cooling elements 23 are either turned off or reduced in their cooling effect and optionally the heating elements 16 of the base 15 is activated, whereby the molten metal, which is located in the branch channels 20, is heated and liquefied, so that the metal spray nozzle 10 again
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014018793.4A DE102014018793A1 (en) | 2014-12-19 | 2014-12-19 | Metal spray nozzle for injection molding a liquid metal component |
PCT/EP2015/002518 WO2016096121A1 (en) | 2014-12-19 | 2015-12-15 | Metal injection nozzle for injection molding a liquid metal component |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3233332A1 true EP3233332A1 (en) | 2017-10-25 |
EP3233332B1 EP3233332B1 (en) | 2020-02-05 |
Family
ID=55080077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15822909.6A Active EP3233332B1 (en) | 2014-12-19 | 2015-12-15 | Metal injection nozzle for injection molding a liquid metal component |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3233332B1 (en) |
DE (1) | DE102014018793A1 (en) |
WO (1) | WO2016096121A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112694238A (en) * | 2021-01-18 | 2021-04-23 | 武汉长利新材料科技有限公司 | Large-tonnage one-kiln eight-wire thin photovoltaic glass melting furnace |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3568256A (en) * | 1968-07-15 | 1971-03-09 | J & J Machine Co Inc | Plastic feeder head |
DE2338458A1 (en) * | 1973-07-28 | 1975-02-06 | Karl Hehl | MULTIPLE NOZZLE OF ONE INJECTION MOLDING MACHINE |
JPH02107417A (en) * | 1988-10-17 | 1990-04-19 | Sanri Kk | Multigate tip piece device for synthetic resin injection molding machine |
CA2010961C (en) * | 1990-02-27 | 1997-03-11 | Harald Schmidt | Injection molding manifold having a pair of cooling bores on opposite sides of the melt passage |
DE4032500C2 (en) * | 1990-10-12 | 1994-12-08 | Gellert Jobst U | Process for producing a multi-component injection molded part and multi-mold injection molding device |
CA2115613C (en) * | 1994-02-14 | 2002-02-12 | Jobst Ulrich Gellert | Injection molding valve member sealing bushing with thin collar portion |
US5522720A (en) * | 1994-10-24 | 1996-06-04 | Husky Injection Molding Systems Ltd. | Injector nozzle with pivotally movable surfaces |
DE102009048368B4 (en) * | 2009-10-06 | 2013-07-04 | Hasco Hasenclever Gmbh + Co Kg | Injection nozzle for guiding melt mass, in particular in a plastic injection mold |
DE102010033153B4 (en) * | 2010-08-03 | 2020-06-18 | Otto Männer Innovation GmbH | Injection molding nozzle |
DE102012009790A1 (en) | 2012-05-18 | 2013-11-21 | Gebr. Krallmann Gmbh | Method for injection molding a liquid metal component and nozzle for spraying metal |
-
2014
- 2014-12-19 DE DE102014018793.4A patent/DE102014018793A1/en not_active Withdrawn
-
2015
- 2015-12-15 WO PCT/EP2015/002518 patent/WO2016096121A1/en active Application Filing
- 2015-12-15 EP EP15822909.6A patent/EP3233332B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102014018793A1 (en) | 2016-06-23 |
WO2016096121A1 (en) | 2016-06-23 |
EP3233332B1 (en) | 2020-02-05 |
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