WO1999036241A1 - Cooling and heating core - Google Patents
Cooling and heating core Download PDFInfo
- Publication number
- WO1999036241A1 WO1999036241A1 PCT/DE1998/003777 DE9803777W WO9936241A1 WO 1999036241 A1 WO1999036241 A1 WO 1999036241A1 DE 9803777 W DE9803777 W DE 9803777W WO 9936241 A1 WO9936241 A1 WO 9936241A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- heating core
- heating
- core
- core according
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
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- 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
- B22D17/24—Accessories for locating and holding cores or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C2033/042—Meander or zig-zag shaped cooling channels, i.e. continuous cooling channels whereby a plurality of cooling channel sections are oriented in a substantial parallel direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
Definitions
- the invention relates to a cooling and heating core for tool parts with an outer core, in particular for injection molding, glass, deep-drawing and extruder tools
- the shape of the tool part determines the shape of the finished part to be produced.
- a cube-shaped, cylindrical or lenticular shaped part requires a tool part that has good heat transfer at certain points in order to be free of defects and quick shaping. These specific locations, the end faces, are those with which the tool part first comes into contact with the semi-finished material (plastic, metal), for example the bottom of the cup. With low heat transfer, production can only be carried out at low speed.
- a coolant or heating medium for lowering or increasing the temperature is introduced through an inlet opening, for example an inlet bore of an inlet pipe which is inserted into the otherwise hollow tool part, and the coolant or heating medium flows out of an outlet opening again.
- an inlet opening for example an inlet bore of an inlet pipe which is inserted into the otherwise hollow tool part
- the coolant or heating medium flows out of an outlet opening again.
- Another tool part in use is equipped with a cylindrical inner core, which is provided on the side with double thread grooves.
- One of the two double thread grooves connects to the inlet opening and the other to the outlet opening on the back of the inner core.
- the thread grooves are connected to one another near the front of the inner core, so that the coolant or heating medium can flow in opposite directions in the thread grooves. Since the temperature gradient is greatest in the entry and exit area, the greatest occurs immediately after the coolant or heating agent enters the thread groove
- Heat exchange not with the molded part, but fatally with the emerging coolant or heating medium.
- the temperature at the end of the core can only be influenced indirectly by using the thermal conductivity.
- the innovation is therefore based on the task of creating a cooling and heating core that has molding-appropriate heat transfer properties and this with a maximum of adaptability in terms of core size, without requiring great technical effort and in the simplest but all the more durable manner is to be created.
- cooling and heating core can be made up of individual modules, it is possible to design the cooling and heating core individually, i.e. to adapt to the circumstances, even if the required adjustment is not standard dimensions, rather it is possible to adapt the cooling and heating core according to the invention to any degree, be it by appropriate e.g. Shortening the individual modules, e.g. by Turning off using a lathe.
- cooling and heating core head and one cooling and heating core base are provided, this ensures that the cooling and heating core always functions optimally even with individual adaptation.
- Fig.l is a perspective view of a cooling
- FIG. 2 shows the four modules forming the cooling and heating core according to FIG. 1 in an exploded view in perspective
- FIG. 3 shows a perspective view of the cooling and heating core from a different perspective from FIG. 1,
- FIG. 5 shows a module center piece from FIG. 2 in plan view
- FIG. 6 shows a section along line A-A from FIG. 5,
- FIG. 7 shows a bottom view of the module center piece from FIG. 5,
- FIG. 9 shows a bottom view of the cooling and heating core head from FIG. 2 and
- FIG. 10 shows a top view of the cooling and heating core head from FIG.
- a coolant or heating medium for example water, oil
- inlet opening 2 inlet bore 2 shown in FIG. 3, this inlet bore 2 for example a threaded connection for inlet and Can have expansion.
- the inlet bore 2 leads as an axially extending passage 3, shown in FIGS. 4, 5, 6 and 7, through the center of the cooling and heating core 1 and ends at the bottom in a hole 4 in order to open into a flushing surface 5.
- the passage 3 is in the present embodiment as a circular, i.e. cylindrical passage with a flattened side.
- the hole 4 is partially surrounded by a guide rib 6, which in cooperation with the inner bottom of the outer core, not shown, ensures that the coolant or heating medium escaping through the hole 4, as can be seen from FIGS. 9 and 1, via the
- the bottom surface of the outer core and the flushing surface 5 of the inner core are guided in a predetermined direction of movement, in the present exemplary embodiment according to FIGS. 9 and 1 in a circular right-hand movement and via a feed point 7 into a cooling pocket designed as a meandering groove 8, shown in FIG. 3, opens out, in order to be guided on the tubular side surface of the outer core and thus in the meandering groove 8 first upwards and then downwards by a first deflection groove 9.
- the cooling and heating core 1 has six deflection grooves 9 and seven axially and straight groove sections 8.
- a groove section designated 10, shown in FIGS. 3 and 8, leads to an outlet opening 11 for the coolant or heating medium.
- the tool part equipped with cooling and heating core 1 makes it possible to create a targeted heat transfer at the locations of the tool part, which is adequate for the molded part to be produced taking into account the material properties. While the cooling and heating core 1 described with reference to the drawing, such a
- Groove guide has preferred heat transport, has on the bottom side, i.e. in the area of the flushing surface 5, other groove profiles are to be considered for other shapes and materials.
- Another advantage of the tool part equipped with a cooling and heating core according to the innovation is that the cooling or heating medium throughput can be minimized.
- the cooling and heating core 1 is constructed in a modular manner, i.e. in the form of a plug-in system, i.e. designed to be assembled from various modules 12, 13, 14, 15.
- the cooling and heating core 1 consists of four modules 12, 13, 14, 15, i.e. a cooling core and heating core head 12, a first cooling core and heating core center piece 13 and a second cooling core and heating core center piece, which are of shorter design in the present exemplary embodiment, and lastly a so-called cooling core and heating core foot 15.
- both the cooling core and heating core base 15 and the cooling core and heating core center pieces 13, 14 point on their right outer side in the viewing direction FIG. and Bankkernkopf 12 facing side axially arranged, ie extending the passage 3, the coupling with the subsequent cooling core and heating core module 12,13,14 serving extensions 16, which, as can be seen in Figures 5,7,8, are circular and on a predetermined side have a flattened portion 17 and, moreover, in the present exemplary embodiment, designed in one piece with the associated module 12, 13, 14.
- the individual cooling core and heating head modules 12, 13, 14 have on their left, as seen in Fig. 2, i.e. on the side facing the cooling and heating core base 15 has a coaxially arranged blind hole-shaped bore 17, shown in FIGS. 6, 7.
- the blind hole-like depression 18 also has a flat 19 on one of its sides.
- Both the cooling and heating core center pieces 13, 14, as well as the cooling and heating core base 15 and the cooling and heating core head 12 also have ribs 20 which, with a corresponding connection of the module parts 12, 13, 14, 15, complementary continuous ribs 20 and thus form the meander grooves 9 or groove sections 11 or deflection grooves 10.
- the cooling core and heating core head 12 has a circumferential disk 21, which forms the rinsing surface 5, the outside diameter of which corresponds to the outside diameter of the ribs 20.
- the cooling and heating core base 15 also has a disk 21 *, the outside diameter of which also corresponds to the outside diameter of the ribs 20.
- the cooling and heating core head 12 is only provided with four ribs 20 on its side facing the cooling and heating core center piece 13.
- the adjoining cooling and heating core center piece 13 has four ribs 20 extending over the entire length, while three ribs 20 end at a distance from the end facing the cooling core and heating core head 12, so that in the assembled state a deflection groove 10, shown in Fig.l and 3, is formed.
- the cooling and heating core base 12 also has four ribs on its side facing the cooling and heating core center piece 14, which form a closed rib with the adjoining ribs 20 of the cooling and heating core center piece 14, while three of the seven ribs 20 of the cooling and
- the modular construction shown enables a variable length design of the cooling and heating core 1 while at the same time advantageously guiding the coolant or heating medium.
- the configuration according to the invention enables the use of a wide variety of materials, such as, in the present exemplary embodiment, e.g. Plastic.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- General Induction Heating (AREA)
Abstract
Description
Kühl-und HeizkernCooling and heating core
Beschreibung:Description:
Die Erfindung betrifft einen Kühl- und Heizkern für Werkzeugteil mit Außenkern, insbesondere für Spritzgieß-, Glas-, Tiefzieh- und Extruderwerkzeuge derThe invention relates to a cooling and heating core for tool parts with an outer core, in particular for injection molding, glass, deep-drawing and extruder tools
Kunststoffindustrie und für Druckguß- und Metallgießwerkzeuge der Metallindustrie mit den Merkmalen des Oberbegriffes des Anspruches 1.Plastic industry and for die casting and metal casting tools of the metal industry with the features of the preamble of claim 1.
Die Form des Werkzeugteiles, genauer gesagt des Außenkerns, bestimmt die Form des herzustellenden Formfertigteiles. Ein würfeliges, zylinderisches oder linsenförmiges Formteil erfordert zu seiner fehlerfreien und schnellen Formgebung ein Werkzeugteil, das an bestimmten Stellen über einen guten Wärmeübergang verfügt. Diese bestimmten Stellen, die Stirnflächen, sind die jenigen, mit denen das Werkzeugteil zuerst Kontakt mit dem Halbzeugmaterial (Kunststoff, Metall) bekommt, beim Becher beispielsweise der Boden. Bei geringem Wärmeübergang kann nur mit geringer Geschwindigkeit gefertigt werden.The shape of the tool part, more precisely the outer core, determines the shape of the finished part to be produced. A cube-shaped, cylindrical or lenticular shaped part requires a tool part that has good heat transfer at certain points in order to be free of defects and quick shaping. These specific locations, the end faces, are those with which the tool part first comes into contact with the semi-finished material (plastic, metal), for example the bottom of the cup. With low heat transfer, production can only be carried out at low speed.
Bei bekannten Werkzeugteilen wird ein Kühl- oder Heizmittel zur Temperaturabsenkung bzw. -erhöhung durch eine Eintrittsöffnung, bspw. eine Eintrittsbohrung eines Einlaßrohres eingeleitet, das in das ansonsten hohle Werkzeugteil gesteckt ist, und aus einer Austrittsöffnung fließt das Kühl- oder Heizmittel wieder aus. Bei erhöhtem Kühl- oder Heizmitteldurchsatz läßt sich an manchen Stellen des Werkzeugteiles kein ausreichender Wärmetransport erzielen, und an anderen Stellen ist schon die obere zulässige Grenze des Wärmetransports erreicht. Schuld daran sind strömungstechnische Eigenarten, wie beispielsweise die Bildung von Taschen, in denen kaum eine Bewegung des Kühloder Heizmittels erfolgt, während an anderen Flecken starke Strömungen mit erhöhtem Wärmeübergang auftreten.In known tool parts, a coolant or heating medium for lowering or increasing the temperature is introduced through an inlet opening, for example an inlet bore of an inlet pipe which is inserted into the otherwise hollow tool part, and the coolant or heating medium flows out of an outlet opening again. With increased Sufficient heat transfer cannot be achieved in some places on the tool part, and in other places the upper permissible limit of the heat transfer has already been reached. This is due to flow-related peculiarities, such as the formation of pockets in which there is hardly any movement of the coolant or heating medium, while strong currents with increased heat transfer occur at other spots.
Ein anderes im Gebrauch befindliches Werkzeugteil ist mit einem zylinderförmigen Innenkern ausgestattet, der seitlich mit Doppelgewindenuten versehen ist. Eine der beiden Doppelgewindenuten schließt sich an die Eintrittsöffnung und die andere an die Austrittsöffnung an der Rückseite des Innenkerns an. Nahe der Vorderseite des Innenkerns sind die Gewindenuten miteinander verbunden, so daß das Kühl- oder Heizmittel in den Gewindenuten gegenläufig strömen kann. Da der Temperaturgradient im Ein- und Austrittsbereich am größten ist, kommt es unmittelbar nach Eintritt des Kühl- oder Heizmittels in die Gewindenut zu dem größtenAnother tool part in use is equipped with a cylindrical inner core, which is provided on the side with double thread grooves. One of the two double thread grooves connects to the inlet opening and the other to the outlet opening on the back of the inner core. The thread grooves are connected to one another near the front of the inner core, so that the coolant or heating medium can flow in opposite directions in the thread grooves. Since the temperature gradient is greatest in the entry and exit area, the greatest occurs immediately after the coolant or heating agent enters the thread groove
Wärmeaustausch, und zwar nicht mit dem Formteil, sondern fatalerweise mit dem austretenden Kühl- oder Heizmittel. Darüber hinaus läßt sich die Temperatur an der Stirnseite des Kerns nur indirekt durch Nutzung des Wärmeleitvermögens beeinflussen.Heat exchange, not with the molded part, but fatally with the emerging coolant or heating medium. In addition, the temperature at the end of the core can only be influenced indirectly by using the thermal conductivity.
Diesem Problem wurde versucht dadurch zu begegnen, daß ein Kühl- und Heizkern geschaffen wurde, bei dem ein Kühl- oder Heizmittel zur Temperatursenkung bzw. -erhöhung in eine Eintrittsöffnung einfließt und aus einer Austrittsöffnung ausfließt, wobei sich die Eintrittsöffnung mit einem axial verlaufenden Durchgang durch die Mitte des Innenkerns fortsetzt, die zu einer an die Bodeninnenfläche des Außenkerns angrenzenden Stirnseite des Innenkerns führt.This problem was attempted to be countered by the fact that a cooling and heating core was created in which a cooling or heating medium for lowering or increasing the temperature flows into an inlet opening and flows out of an outlet opening, the inlet opening passing through with an axially extending passage continues the center of the inner core, which leads to an end face of the inner core which adjoins the bottom inner surface of the outer core.
Bei dem zuvor beschriebenden Stand der Technik besteht das Problem, daß zum einen keine formteiladäquaten Wärmeübergangseigenschaften vorliegen oder aber ein Innenkern bereitgestellt wird, der nicht an verschiedene Baugrößen anzupassen ist, d.h. es ist für jede benötigte Größe ein individueller Innenkern zu fertigen.In the previously described prior art, there is the problem that, on the one hand, there are no heat transfer properties that are adequate for the molding, or that there is an inner core is provided that cannot be adapted to different sizes, ie an individual inner core must be manufactured for each required size.
Der Neuerung liegt daher die Aufgabe zugrunde, einen Kühl- und Heizkern zu schaffen, der formteiladäquate Wärmeübergangseigenschaften besitzt und dies bei einem Höchstmaß an Anpassungsfähigkeit hinsichtlich der Kerngröße, ohne daß es dazu eines großen technischen Aufwandes bedarf und auf einfachste aber um so haltbarere Art und Weise zu erstellen ist.The innovation is therefore based on the task of creating a cooling and heating core that has molding-appropriate heat transfer properties and this with a maximum of adaptability in terms of core size, without requiring great technical effort and in the simplest but all the more durable manner is to be created.
Diese Aufgabe wird bei einem Kühl- und Heizkern der eingangs genannten Gattung mit den Merkmalen des kennzeichnenden Teiles des Schutzanspruches 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche 2 bis 18.This object is achieved in a cooling and heating core of the type mentioned with the features of the characterizing part of protection claim 1. Further advantageous refinements of the invention are the subject matter of subclaims 2 to 18.
Dadurch, daß der Kühl- und Heizkern aus Einzelmodulen zusammensetzbar ausgebildet ist, besteht die Möglichkeit den Kühl- und Heizkern individuell zu gestalten, d.h. den Gegebenheiten anzupassen und zwar auch dann, wenn es sich bei der benötigten Anpassung nicht um Normmaße handelt, vielmehr ist es möglich, den erfindungsgemäßen Kühl- und Heizkern jedwedem Maß anzupassen und sei es durch entsprechende z.B. Verkürzung der einzelnen Module, durch z.B. Abdrehen mittels Drehmaschine.Due to the fact that the cooling and heating core can be made up of individual modules, it is possible to design the cooling and heating core individually, i.e. to adapt to the circumstances, even if the required adjustment is not standard dimensions, rather it is possible to adapt the cooling and heating core according to the invention to any degree, be it by appropriate e.g. Shortening the individual modules, e.g. by Turning off using a lathe.
Ist wenigstens ein Kühl- und Heizkernkopf und ein Kühl- und Heizkernfuß vorgesehen, so gewährleistet dies auch bei individueller Anpassung eine stets optimale Funktion des Kühl- und Heizkernes.If at least one cooling and heating core head and one cooling and heating core base are provided, this ensures that the cooling and heating core always functions optimally even with individual adaptation.
Ist die Stirnseite als Spülfläche ausgestaltet und ist die Spülfläche mit einer Leitrippe versehen, so wird durch einfache technische, aber auf um so überraschendere Art und Weise sichergestellt, daß auch die Bodeninnenfläche des Außenkerns eine optimale Kühlung oder Erhitzung erfährt. In der Zeichnung wird ein Ausführungsbeispiel des erfindungsgemäßen Kühl- und Heizkerns für Werkzeugteile schematisch dargestellt, und zwar zeigtIf the end face is designed as a rinsing surface and the rinsing surface is provided with a guide rib, it is ensured by simple technical, but in an all the more surprising manner that the bottom inner surface of the outer core is also optimally cooled or heated. In the drawing, an embodiment of the cooling and heating core for tool parts according to the invention is shown schematically, namely shows
Fig.l eine perspektivische Ansicht eines Kühl- undFig.l is a perspective view of a cooling and
Heizkerns für ein zylinderisches Werkzeugteil,Heating core for a cylindrical tool part,
Fig.2 die vier, im hier vorliegenden Ausführungsbeispiel den Kühl- und Heizkern gemäß Fig.l bildenden Module in einer Explosionszeichnung in perspektivischer2 shows the four modules forming the cooling and heating core according to FIG. 1 in an exploded view in perspective
Ansicht,View,
Fig.3 eine perspektivische Ansicht des Kühl- und Heizkerns aus einem, von Fig.l unterschiedlichen Blickwinkel,3 shows a perspective view of the cooling and heating core from a different perspective from FIG. 1,
Fig.4 den Kopf des Kühl- und Heizkerns beinhaltende drei4 shows the head of the cooling and heating core including three
Module der, im hier vorliegenden Ausführungsbeispiel, vier den Kühl- und Heizkern gemäß Fig.l und 2 bildenden Modulen in einer schematischen Schnittdarstellung,Modules of, in the present exemplary embodiment, four modules forming the cooling and heating core according to FIGS. 1 and 2 in a schematic sectional illustration,
Fig.5 ein Modulmittelstück aus Fig.2 in Draufsicht,5 shows a module center piece from FIG. 2 in plan view,
Fig.6 einen Schnitt nach Linie A-A aus Fig.5,6 shows a section along line A-A from FIG. 5,
Fig.7 eine Unteransicht des Modulmittelstückes aus Fig.5,7 shows a bottom view of the module center piece from FIG. 5,
Fig.8 den Kühl- und Heizkernfuß aus Fig.2 in Draufsicht,8 the top of the cooling and heating core from FIG. 2,
Fig.9 eine Unteransicht des Kühl- und Heizkernkopfes aus Fig.2 und9 shows a bottom view of the cooling and heating core head from FIG. 2 and
Fig.10 eine Draufsicht des Kühl- und Heizkernkopfes aus Fig.2.10 shows a top view of the cooling and heating core head from FIG.
In einen in der Zeichnung insgesamt mit 1 bezeichneten erfindungsgemäßen Kühl- und Heizkern aus Kunststoff, der als ein Innenkern einen Außenkern (nicht dargestellt) ausfüllt und so, im hier vorliegenden Ausführungsbeispiel, ein kreiszylinderisches Werkzeugteil bildet, wird ein Kühl- oder Heizmittel (z.B. Wasser, Öl) in eine Eintrittsöffnung 2, in Fig.3 dargestellte Eintrittsbohrung 2 eingeleitet, wobei diese Eintrittsbohrung 2 z.B. einen Gewindeanschluß zum Ein- und Ausbau aufweisen kann.In a cooling and heating core made of plastic according to the invention, designated overall by 1 in the drawing, which fills an outer core (not shown) as an inner core and so, in the present exemplary embodiment, forms a circular-cylindrical tool part, a coolant or heating medium (for example water, oil) is introduced into an inlet opening 2, inlet bore 2 shown in FIG. 3, this inlet bore 2 for example a threaded connection for inlet and Can have expansion.
Die Eintrittsbohrung 2 führt als sich axial erstreckender Durchgang 3, dargestellt in Fig.4,5,6 und 7, durch die Mitte des Kühl- und Heizkerns 1 und endet unten in einem Loch 4, um in eine Spülfläche 5 einzumünden.The inlet bore 2 leads as an axially extending passage 3, shown in FIGS. 4, 5, 6 and 7, through the center of the cooling and heating core 1 and ends at the bottom in a hole 4 in order to open into a flushing surface 5.
Der Durchgang 3 ist im hier vorliegenden Ausführungsbeispiel als kreisrunder, d.h. zylinderischer Durchgang mit einer abgeflachten Seite ausgestaltet.The passage 3 is in the present embodiment as a circular, i.e. cylindrical passage with a flattened side.
Das Loch 4 ist dabei teilweise von einer Leitrippe 6 umgeben, die im Zusammenspiel mit dem Innenboden des nicht dargestellten Außenkerns dafür Sorge trägt, daß das durch das Loch 4 austretende Kühl- oder Heizmittel, wie aus Fig.9 und 1 zu ersehen, über die Bodenfläche des Außenkerns sowie die Spülfläche 5 des Innenkerns in eine vorbestimmte Bewegungsrichtung, im hier vorliegenden Ausführungsbeispiel gemäß Fig.9 und 1 in einer kreisförmigen rechtsgerichteten Bewegung geleitet wird und über eine Zuführstelle 7 in eine als Mäanderrille 8 ausgestaltete Kühltasche, dargestellt in Fig.3, einmündet, um an der rohrförmigen Seitenfläche des Außenkerns und damit in der Mäanderrille 8 zunächst nach oben und dann von einer ersten Umlenkrille 9 nach unten geleitet zu werden.The hole 4 is partially surrounded by a guide rib 6, which in cooperation with the inner bottom of the outer core, not shown, ensures that the coolant or heating medium escaping through the hole 4, as can be seen from FIGS. 9 and 1, via the The bottom surface of the outer core and the flushing surface 5 of the inner core are guided in a predetermined direction of movement, in the present exemplary embodiment according to FIGS. 9 and 1 in a circular right-hand movement and via a feed point 7 into a cooling pocket designed as a meandering groove 8, shown in FIG. 3, opens out, in order to be guided on the tubular side surface of the outer core and thus in the meandering groove 8 first upwards and then downwards by a first deflection groove 9.
Wie aus den Fig. 1 bis 10 zu ersehen, weist der erfindungsgemäße Kühl- und Heizkern 1 sechs Umlenkrillen 9 sowie sieben axial und gerade verlaufende Rillenabschnitte 8 auf. Ein mit 10 bezeichneter Rillenabschnitt, dargestellt in Fig.3 und 8, führt zu einer Austrittsöffnung 11 für das Kühl- oder Heizmittel.As can be seen from FIGS. 1 to 10, the cooling and heating core 1 according to the invention has six deflection grooves 9 and seven axially and straight groove sections 8. A groove section designated 10, shown in FIGS. 3 and 8, leads to an outlet opening 11 for the coolant or heating medium.
Das mit Kühl- und Heizkern 1 ausgestattete Werkzeugteil nach der Neuerung, ermöglicht es, einen gezielten Wärmetransport an den Stellen des Werkzeugteiles zu schaffen, der für das herzustellende Formteil unter Berücksichtigung der Materialeigenschaften adäquat ist. Während der anhand der Zeichnung beschriebene Kühl- und Heizkern 1 eine solcheThe tool part equipped with cooling and heating core 1 according to the innovation makes it possible to create a targeted heat transfer at the locations of the tool part, which is adequate for the molded part to be produced taking into account the material properties. While the cooling and heating core 1 described with reference to the drawing, such a
Rillenführung hat die den Wärmetransport bevorzugt, an der Bodenseite hat, d.h. im Bereich der Spülfläche 5, sind für andere Formen und Materialien andere Rillenverläufe in Betracht zu ziehen.Groove guide has preferred heat transport, has on the bottom side, i.e. in the area of the flushing surface 5, other groove profiles are to be considered for other shapes and materials.
Ein weiterer Vorteil des mit Kühl- und Heizkern ausgestatteten Werkzeugteiles nach der Neuerung, besteht darin, daß der Kühl- oder Heizmitteldurchsatz minimiert werden kann.Another advantage of the tool part equipped with a cooling and heating core according to the innovation is that the cooling or heating medium throughput can be minimized.
Wie den Fig. 1 bis 3 zu entnehmen, ist der erfindungsgemäße Kühl- und Heizkern 1 modulartig aufgebaut, d.h. in Form eines Stecksystems, d.h. aus verschiedenen Modulen 12,13,14,15 zusammensetzbar ausgestaltet.1 to 3, the cooling and heating core 1 according to the invention is constructed in a modular manner, i.e. in the form of a plug-in system, i.e. designed to be assembled from various modules 12, 13, 14, 15.
Im hier vorliegenden Ausführungsbeispiel besteht der erfindungsgemäße Kühl- und Heizkern 1 aus vier Modulen 12,13,14,15, d.h. einen Kühlkern- und Heizkernkopf 12, einem ersten Kühlkern- und Heizkernmittelstück 13 sowie einem zweiten, im hier vorliegenden Ausführungsbeispiel kürzer ausgestalteten Kühlkern- und Heizkernmittelstück und als letztes einem sogenannten Kühlkern- und Heizkernfuß 15.In the present embodiment, the cooling and heating core 1 according to the invention consists of four modules 12, 13, 14, 15, i.e. a cooling core and heating core head 12, a first cooling core and heating core center piece 13 and a second cooling core and heating core center piece, which are of shorter design in the present exemplary embodiment, and lastly a so-called cooling core and heating core foot 15.
Wie den Figuren im einzelnen zu entnehmen, insbesondere den Figuren 8,9,10, weisen sowohl der Kühlkern- und Heizkernfuß 15, als auch die Kühlkern- und Heizkernmittelstücke 13,14 in Blickrichtung Fig.2 an ihrer rechten Außenseite, d.h. den Kühlkern- und Heizkernkopf 12 zugewandten Seite axial angeordnete, d.h. dem Durchgang 3 verlängernde, der Koppelung mit dem jeweils sich anschließenden Kühlkern- und Heizkernmodul 12,13,14 dienende Fortsätze 16 auf, die, wie den Figuren 5,7,8 zu entnehmen, kreisrund ausgestaltet sind und an einer vorbestimmten Seite eine Abflachung 17 aufweisen und im übrigen, im hier vorliegenden Ausführungsbeispiel, einstückig mit dem dazugehörigen Modul 12,13,14 ausgestaltet.As can be seen in detail from the figures, in particular from FIGS. 8, 9, 10, both the cooling core and heating core base 15 and the cooling core and heating core center pieces 13, 14 point on their right outer side in the viewing direction FIG. and Heizkernkopf 12 facing side axially arranged, ie extending the passage 3, the coupling with the subsequent cooling core and heating core module 12,13,14 serving extensions 16, which, as can be seen in Figures 5,7,8, are circular and on a predetermined side have a flattened portion 17 and, moreover, in the present exemplary embodiment, designed in one piece with the associated module 12, 13, 14.
Die einzelnen Kühlkern- und Heizkopfmodule 12,13,14 weisen an ihrer, in Blickrichtung Fig.2 linken Seite, d.h. an der dem Kühl- und Heizkernfuß 15 zugewandten Seite eine koaxial angeordnete sacklochförmig ausgestaltete Bohrung 17 auf, dargestellt in Fig.6, 7.The individual cooling core and heating head modules 12, 13, 14 have on their left, as seen in Fig. 2, i.e. on the side facing the cooling and heating core base 15 has a coaxially arranged blind hole-shaped bore 17, shown in FIGS. 6, 7.
Die sacklochartige Vertiefung 18 weist ebenfalls an einer ihrer Seiten jeweils eine Abflachung 19 auf.The blind hole-like depression 18 also has a flat 19 on one of its sides.
Die einzelnen Module 12,13,14,15 werden, um den erfindungsgemäßen Kühl- und Heizkern 1 zu schaffen, durch einfaches Zusammenstecken der einzelenen ModulteileIn order to create the cooling and heating core 1 according to the invention, the individual modules 12, 13, 14, 15 are simply put together of the individual module parts
12,13,14,15 miteinander verbunden, wobei jeweils ein Vorsatz 16 passgenau in die sacklochartige Vertiefung 18 eingebracht wird und der genaue Sitz zwangsweise durch die Abflachung sowohl am Vorsatz 16 als auch an der sacklochartigen Vertiefung 18 gewährleistet ist.12, 13, 14, 15 are connected to one another, with an attachment 16 each being inserted with a precise fit into the blind hole-like depression 18 and the exact fit being forcibly ensured by the flattening both on the attachment 16 and on the blind hole-like depression 18.
Sowohl die Kühl- und Heizkernmittelstücke 13,14, als auch der Kühl- und Heizkernfuß 15 sowie der Kühl- und Heizkernkopf 12 weisen dabei des weiteren Rippen 20 auf, die bei entsprechender Verbindung der Modulteile 12,13,14,15 sich ergänzend durchgängige Rippen 20 und damit die Mäanderrillen 9 bzw. Rillenabschnitte 11 bzw. Umlenkrillen 10 bilden.Both the cooling and heating core center pieces 13, 14, as well as the cooling and heating core base 15 and the cooling and heating core head 12 also have ribs 20 which, with a corresponding connection of the module parts 12, 13, 14, 15, complementary continuous ribs 20 and thus form the meander grooves 9 or groove sections 11 or deflection grooves 10.
Wie den Fig. 1,2, und 3 zu entnehmen, weist der Kühlkern- und Heizkernkopf 12 eine, die Spülfläche 5 bildende umlaufende Scheibe 21 auf, deren Außendurchmesser dem der Außendurchmesser der Rippen 20 entspricht. Der Kühl- und Heizkernfuß 15 weist ebenfalls eine Scheibe 21* auf, deren Außendurchmesser ebenfalls dem Außendurchmesser der Rippen 20 entspricht.As can be seen in FIGS. 1, 2 and 3, the cooling core and heating core head 12 has a circumferential disk 21, which forms the rinsing surface 5, the outside diameter of which corresponds to the outside diameter of the ribs 20. The cooling and heating core base 15 also has a disk 21 *, the outside diameter of which also corresponds to the outside diameter of the ribs 20.
Wie der Fig.10 zu entnehmen, ist der Kühl- und Heizkernkopf 12 auf seiner, in dem Kühl- und Heizkernmittelstück 13 zugewandten Seite lediglich mit vier Rippen 20 versehen.As can be seen in FIG. 10, the cooling and heating core head 12 is only provided with four ribs 20 on its side facing the cooling and heating core center piece 13.
Das sich daran angrenzende Kühl- und Heizkernmittelstück 13 weist vier sich über die gesamte Länge erstreckende Rippen 20 auf, während drei Rippen 20 in einem Abstand zum, dem Kühlkern- und Heizkernkopf 12 zugewandten Ende enden, so daß dadurch im zusammengebauten Zustand eine Umlenkrille 10, dargestellt in Fig.l und 3, gebildet wird.The adjoining cooling and heating core center piece 13 has four ribs 20 extending over the entire length, while three ribs 20 end at a distance from the end facing the cooling core and heating core head 12, so that in the assembled state a deflection groove 10, shown in Fig.l and 3, is formed.
Der Kühl- und Heizkernfuß 12 weist an seiner, dem Kühl- und Heizkernmittelstück 14 zugewandten Seite ebenfalls vier Rippen auf, die mit den daran anschließenden Rippen 20 des Kühl- und Heizkernmittelstückes 14 eine geschlossene Rippe bilden, während drei der sieben Rippen 20 des Kühl- undThe cooling and heating core base 12 also has four ribs on its side facing the cooling and heating core center piece 14, which form a closed rib with the adjoining ribs 20 of the cooling and heating core center piece 14, while three of the seven ribs 20 of the cooling and
Heizkernmittelstückes 14 in einem Abstand zur, dem Kühl- und Heizkernfuß 15 zugewandten Seite enden, so daß auch hier entsprechende Umlenkrillen 10, wie in Fig.3 und 1 gezeigt, gebildet werden.Heizkernmittelstückes 14 end at a distance from the side facing the cooling and Heizkernfuß 15, so that here corresponding deflection grooves 10, as shown in Fig.3 and 1, are formed.
Auf der, dem Kühl- und Heizkernmittelstück 14 abgewandten Seite der Scheibe 21 des Kühl- und Heizkernfußes 15 befinden sich darüber hinaus, der Stabilisierung und Führung dienende weitere Rippen 22.On the side of the disk 21 of the cooling and heating core foot 15 facing away from the center of the cooling and heating core 14 there are also further ribs 22 serving for stabilization and guidance.
Es ist in einem Ausführungsbeispiel denkbar, die einzelnen Modulteile 12,13,14,15 durch entsprechende Passungen, wie z.B. eine Übergangspassung, d.h. Ausgestaltung der Fortsätze 16 und sacklochartigen Vertiefungen 18 miteinander nachhaltig zu verbinden oder aber auch durch z.B. verkleben miteinander zu verbinden. Des weiteren ist es denkbar, die einzelnen Modulteile in einem relativ lockeren Sitz miteinander zu verbinden, um diese dann z.B. durch Druckbeaufschlagung auf den Kühl- und Heizkernfuß 15 gegen den Boden des hier nicht dargestellten Außenkernes fest zu positionieren und damit die einzelnenIn one exemplary embodiment, it is conceivable to connect the individual module parts 12, 13, 14, 15 with one another by appropriate fits, such as, for example, a transition fit, ie designing the extensions 16 and blind hole-like depressions 18, or else to connect them by, for example, gluing. Furthermore, it is conceivable to connect the individual module parts to one another in a relatively loose fit, in order then to position them firmly, for example by pressurizing the cooling and heating core base 15, against the bottom of the outer core (not shown here) and thus the individual
Module 12,13,14,15 in einer definierten Position zu halten.Hold modules 12, 13, 14, 15 in a defined position.
Bei dem hier vorgestellten erfindungsgemäßen Kühl- und Heizkern 1 ermöglicht die aufgezeigte Modulbauweise eine variabele Längengestaltung des Kühl- und Heizkerns 1 bei gleichzeitiger vorteilhafter Führung des Kühl- oder Heizmittels.In the cooling and heating core 1 according to the invention presented here, the modular construction shown enables a variable length design of the cooling and heating core 1 while at the same time advantageously guiding the coolant or heating medium.
Des weiteren ermöglicht die erfindungsgemäße Ausgestaltung eine Nutzung verschiedenster Materialien, wie, im hier vorliegenden Ausführungsbeispiel, z.B. Kunststoff.Furthermore, the configuration according to the invention enables the use of a wide variety of materials, such as, in the present exemplary embodiment, e.g. Plastic.
Es ist allerdings ebenso denkbar, jedwedes andere Material zu verwenden.However, it is also conceivable to use any other material.
Des weiteren ist es möglich, die einzelnen Module 12 , 13 , 14 , 15 , insbesondere die Kühl- und Heizkernmittelstücke 13,14 in ihrer Länge individuell anzupassen, d.h. z.B. durch Abdrehen eines Teiles. Furthermore, it is possible to individually adjust the length of the individual modules 12, 13, 14, 15, in particular the cooling and heating core center pieces 13, 14, i.e. e.g. by turning off a part.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19882085T DE19882085D2 (en) | 1998-01-14 | 1998-12-23 | Cooling and heating core |
| AU26087/99A AU2608799A (en) | 1998-01-14 | 1998-12-23 | Cooling and heating core |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29800426U DE29800426U1 (en) | 1998-01-14 | 1998-01-14 | Cooling and heating core |
| DE29800426.7 | 1998-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999036241A1 true WO1999036241A1 (en) | 1999-07-22 |
Family
ID=8051170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1998/003777 Ceased WO1999036241A1 (en) | 1998-01-14 | 1998-12-23 | Cooling and heating core |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2608799A (en) |
| DE (2) | DE29800426U1 (en) |
| WO (1) | WO1999036241A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201514A1 (en) * | 2002-01-17 | 2003-07-31 | Varioplast Konrad Daebritz Gmb | Cooled plastics injection molding tool has a primary channel connected to secondary channels which increase the cooled surface area |
| FR2842753A1 (en) * | 2002-07-26 | 2004-01-30 | Financ D Etudes Et De Dev Ind | PROCESS FOR PRODUCING A TOOL FOR FORMING A MATERIAL AND TOOL WHICH CAN BE MADE BY THIS PROCESS |
| DE10236523A1 (en) * | 2002-08-09 | 2004-02-19 | Behr Gmbh & Co. | Molding tool, e.g. for injection molding, is built up of layers into which interconnecting cooling channels are cut |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012209805A1 (en) * | 2012-06-12 | 2013-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Cooling device and method for cooling a component produced during a lost foam casting process |
| EP3046743B1 (en) * | 2013-09-20 | 2019-09-11 | Husky Injection Molding Systems Ltd. | Mold component with conformal cooling channels |
| DE102017216645A1 (en) * | 2017-09-20 | 2019-03-21 | Volkswagen Aktiengesellschaft | Kühlpinole |
| US20190091909A1 (en) * | 2017-09-26 | 2019-03-28 | Brandon Fontaine | Injection Molding Assembly with Cooling Insert |
| EP3932877B1 (en) * | 2020-06-29 | 2024-02-14 | Schott Ag | Method for cooling a space around a sleeve shaft, device for guiding a fluid along an outer surface area of a sleeve shaft, sleeve shaft comprising such a device, refractory tube with such a sleeve shaft inserted and system comprising such a sleeve shaft and/or such a refractory tube |
| EP4558319A1 (en) * | 2022-07-18 | 2025-05-28 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Moulding male device |
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|---|---|---|---|---|
| FR2510941A1 (en) * | 1981-08-06 | 1983-02-11 | Dayco Corp | CURVED MANDREL FOR VULCANIZATION OF A POLYMER PIPE AND METHOD OF USE |
| EP0099735A2 (en) * | 1982-07-17 | 1984-02-01 | British Gas Corporation | Apparatus for the heat treatment of materials |
| EP0551830A1 (en) * | 1992-01-13 | 1993-07-21 | Husky Injection Molding Systems Ltd. | Flexible heating element for a hot runner housing including method of manufacture and method of installation |
| DE29609883U1 (en) * | 1996-06-07 | 1996-09-26 | Walter Watermann, 32689 Kalletal | Tool part of the plastics and metal industry |
| WO1998031520A1 (en) * | 1997-01-21 | 1998-07-23 | Velcro Industries B.V. | Molding of fasteners and other features |
-
1998
- 1998-01-14 DE DE29800426U patent/DE29800426U1/en not_active Expired - Lifetime
- 1998-12-23 WO PCT/DE1998/003777 patent/WO1999036241A1/en not_active Ceased
- 1998-12-23 DE DE19882085T patent/DE19882085D2/en not_active Ceased
- 1998-12-23 AU AU26087/99A patent/AU2608799A/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2510941A1 (en) * | 1981-08-06 | 1983-02-11 | Dayco Corp | CURVED MANDREL FOR VULCANIZATION OF A POLYMER PIPE AND METHOD OF USE |
| EP0099735A2 (en) * | 1982-07-17 | 1984-02-01 | British Gas Corporation | Apparatus for the heat treatment of materials |
| EP0551830A1 (en) * | 1992-01-13 | 1993-07-21 | Husky Injection Molding Systems Ltd. | Flexible heating element for a hot runner housing including method of manufacture and method of installation |
| DE29609883U1 (en) * | 1996-06-07 | 1996-09-26 | Walter Watermann, 32689 Kalletal | Tool part of the plastics and metal industry |
| WO1998031520A1 (en) * | 1997-01-21 | 1998-07-23 | Velcro Industries B.V. | Molding of fasteners and other features |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201514A1 (en) * | 2002-01-17 | 2003-07-31 | Varioplast Konrad Daebritz Gmb | Cooled plastics injection molding tool has a primary channel connected to secondary channels which increase the cooled surface area |
| FR2842753A1 (en) * | 2002-07-26 | 2004-01-30 | Financ D Etudes Et De Dev Ind | PROCESS FOR PRODUCING A TOOL FOR FORMING A MATERIAL AND TOOL WHICH CAN BE MADE BY THIS PROCESS |
| WO2004011171A1 (en) * | 2002-07-26 | 2004-02-05 | Societe Financiere D'etudes Et De Developpements Industriels Et Technologiques (Sofedit) | Method for making a tool for forming a material and tool obtainable by said method |
| CN1318158C (en) * | 2002-07-26 | 2007-05-30 | 蒂森克虏伯工业技术研发金融公司 | Method for manufacturing tools for forming materials and tools obtained by the method |
| DE10236523A1 (en) * | 2002-08-09 | 2004-02-19 | Behr Gmbh & Co. | Molding tool, e.g. for injection molding, is built up of layers into which interconnecting cooling channels are cut |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29800426U1 (en) | 1998-06-10 |
| DE19882085D2 (en) | 2000-08-24 |
| AU2608799A (en) | 1999-08-02 |
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