DE19654531C1 - Cooling device for cooling heat carriers in tempering units, e.g. for moulds or extruders - Google Patents
Cooling device for cooling heat carriers in tempering units, e.g. for moulds or extrudersInfo
- Publication number
- DE19654531C1 DE19654531C1 DE19654531A DE19654531A DE19654531C1 DE 19654531 C1 DE19654531 C1 DE 19654531C1 DE 19654531 A DE19654531 A DE 19654531A DE 19654531 A DE19654531 A DE 19654531A DE 19654531 C1 DE19654531 C1 DE 19654531C1
- Authority
- DE
- Germany
- Prior art keywords
- cooling
- circulating medium
- circuit
- cooling device
- pressure vessel
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
-
- 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
- B22D17/2218—Cooling or heating equipment for dies
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0077—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Kühlvorrichtung für Temperiergeräte bei Gußformen insbesondere Spritz- oder Druckgußformen.The invention relates to a cooling device for temperature control devices in molds, in particular injection or die casting molds.
Aus der DE-Zeitschrift "Giesserei" 60, 1973, Heft 25, Seite 794-799 sind Temperiergeräte, die
zum Heizen oder Kühlen von Spritzguß- und Druckgußformen, verwendet werden, und für den Betrieb
mit Wasser oder einem anderen Wärmeträger über 90° Celsius geeignet sind, bekannt, die nach folgendem
Prinzip arbeiten:
In einem Behälter (8), welcher unter Druck gesetzt werden kann, befindet sich der zu erwärmende oder
der zu kühlende Wärmeträger (z. B Wasser), eine Heizvorrichtung (6) und eine Kühlvorrichtung (7).
Der Wärmeträger wird mittels Heizung (6) auf eine an der Regelung eingestellten Temperatur (z. B.
140° Celsius) erwärmt. Eine Pumpe (5) befordert den Wärmeträger zum Verbraucher (4), temperiert
diesen, und befordert diesen Wärmeträger zum Druckbehälter (8) zurück. Gibt der Verbraucher (4)
während des Betriebes Wärme ab, so öffnet die Regelung ein Magnetventil (9), wobei Kaltwasser oder
ein anderer Wärmeträger aus dem Betriebskühlnetz (2) durch die Kühlschlange (7) fließen kann, und
dadurch den Wärmeträger im Primärkreislauf (1) auf die gewischte Temperatur abkühlt. Danach
schließt das Magnetventil (9) wieder.From the DE magazine "Giesserei" 60, 1973, number 25, page 794-799 are temperature control units which are used for heating or cooling injection molds and die-casting molds, and for operation with water or another heat transfer medium above 90 ° Celsius are known, who work according to the following principle:
In a container ( 8 ) which can be pressurized there is the heat carrier to be heated or cooled (e.g. water), a heating device ( 6 ) and a cooling device ( 7 ). The heat transfer medium is heated to a temperature set on the control (e.g. 140 ° Celsius) by means of heating ( 6 ). A pump ( 5 ) sends the heat transfer medium to the consumer ( 4 ), tempers it, and sends this heat transfer medium back to the pressure vessel ( 8 ). If the consumer ( 4 ) gives off heat during operation, the control opens a solenoid valve ( 9 ), whereby cold water or another heat carrier from the service cooling network ( 2 ) can flow through the cooling coil ( 7 ), and thereby the heat carrier in the primary circuit ( 1 ) cools down to the wiped temperature. Then the solenoid valve ( 9 ) closes again.
Nach diesem Abkühlen verbleibt jedoch das Kühlmedium aus dem Betriebskühlnetz (2) in der Kühlvorrichtung (7), welches sich rasch auf die Temperatur des Wärmeträgers im Druckbehälter (8) erwärmt, und zuverdampfen beginnt. Die im Wärmeträger gelösten Stoffe. insbesondere mineralische Bestandteile und Schmutzpartikel schlagen sich in den Windungen der Kühlvorrichtung (7) nieder. Durch die ständigen Ablagerungen wird der Querschnitt der Kühlvorrichtung vermindert, bis eine Abkühlung nicht mehr möglich ist. After this cooling, however, the cooling medium from the operating cooling network ( 2 ) remains in the cooling device ( 7 ), which quickly warms up to the temperature of the heat transfer medium in the pressure vessel ( 8 ) and begins to evaporate. The substances dissolved in the heat transfer medium. In particular, mineral constituents and dirt particles are deposited in the windings of the cooling device ( 7 ). Due to the constant deposits, the cross-section of the cooling device is reduced until cooling is no longer possible.
Ein weiteres Problem dieser Temperiergeräte liegt darin, das die Magnetventile (9), welche zum Öffnen und Schließen des Kühlwasserzuflusses (2) verwendet werden, durch Ablagerungen der gelösten Stoffe an der Dichtung undicht werden. Durch das undichte Ventil (9) gelangt ständig etwas Wasser in die Kühlvorrichtung (7), welches dort verdampft, und das Verjüngen des Leitungsquerschnittes der Kühlvorrichtung (7) beschleunigt. Das undichte Magnetventil (9) kann auch zu einem unkontrollierten und zu großen Abkühlen des Wärmeträgers im Druckbehälter (8) des Temperiergerätes führen. Die Heizung (6) des Temperiergerätes muß dann den Wärmeverlust ständig ausgleichen (höherer Energieverbrauch).Another problem with these temperature control units is that the solenoid valves ( 9 ), which are used to open and close the cooling water inlet ( 2 ), become leaky due to deposits of the dissolved substances on the seal. Through the leaky valve ( 9 ), some water constantly enters the cooling device ( 7 ), which evaporates there, and accelerates the tapering of the cross-section of the cooling device ( 7 ). The leaky solenoid valve ( 9 ) can also lead to an uncontrolled and excessive cooling of the heat transfer medium in the pressure vessel ( 8 ) of the temperature control unit. The heating ( 6 ) of the temperature control unit must then constantly compensate for the heat loss (higher energy consumption).
Der Erfindung liegt die Aufgabe zugrunde, das Ausfallen der gelösten Stoffe in der Kühlvorrichtung (7) zu verhindern, die Zuverlässigkeit und Standzeiten der Temperiergeräte enorm zu erhöhen, und den Energieverlust, welcher bei defekten Dichtungen der Ventile auftritt, zu verhindern.The object of the invention is to prevent the dissolved substances from precipitating in the cooling device ( 7 ), to enormously increase the reliability and service life of the temperature control units, and to prevent the energy loss which occurs when the valves have defective seals.
Diese Aufgabe wird erfindungsgemäß mit einem Verfahren mit den Merkmalen nach Anspruch 1 und einer Vorrichtung mit den Merkmalen nach Anspruch 4 gelöst.This object is achieved with a method having the features of claims 1 and a device with the features of claim 4 solved.
Das Temperiergerät erhält einen Zusatzbehälter (12) in dem die Kühlvorrichtung (7) eingebaut ist. Von der Kühlvorrichtung (7) führt eine wärmeträgerführende Leitung (3) zu einer Pumpe (11), Rückschlagventil (10) und weiter zum Druckbehälter (8) des Temperiergerätes und zurück zur Kühlvorrichtung (7).The temperature control unit receives an additional container ( 12 ) in which the cooling device ( 7 ) is installed. A heat-carrying line ( 3 ) leads from the cooling device ( 7 ) to a pump ( 11 ), check valve ( 10 ) and on to the pressure vessel ( 8 ) of the temperature control unit and back to the cooling device ( 7 ).
Die Kühlvorrichtung (7), wird mittels Kühlmedium aus dem Betriebskühlnetz (2) gekühlt. Gibt ein Verbraucher, z. B. Spritzgußform (4), während des Betriebes Wärme an das Temperiergerät ab, so steuert nun die Regelung des Temperiergerätes eine Pumpe (11) an, und öffnet ein Magnetventil (9). Die Pumpe (11) holt sich aus dem Zusatzbehälter (12) bzw. Kühlvorrichtung (7) den gekühlten Wärmeträger und befordert ihn zum Druckbehälter (8). Dabei wird der Wärmeträger im Druckbehälter (8) bzw. im Primärkreislauf (1) abgekühlt. Gleichzeitig fließt der zu kühlende Wärmeträger aus dem Primärkreislauf (1) bzw. Druckbehälter (8) in die Kühlvorrichtung (7) welche in den Zusatzbehälter (12) eingebaut ist, und kühlt dort wieder ab. The cooling device ( 7 ) is cooled by means of cooling medium from the operational cooling network ( 2 ). If a consumer, e.g. B. injection mold ( 4 ), heat from the temperature control unit during operation, the control of the temperature control unit now controls a pump ( 11 ) and opens a solenoid valve ( 9 ). The pump ( 11 ) gets the cooled heat transfer medium from the additional container ( 12 ) or cooling device ( 7 ) and sends it to the pressure container ( 8 ). The heat transfer medium in the pressure vessel ( 8 ) or in the primary circuit ( 1 ) is cooled. At the same time, the heat transfer medium to be cooled flows from the primary circuit ( 1 ) or pressure vessel ( 8 ) into the cooling device ( 7 ) which is installed in the additional vessel ( 12 ), and cools there again.
Dies geschieht so lange, bis der Wärmeträger aus dem Primärkreislauf (1) auf die gewünschte Temperatur abgekühlt ist. Danach schaltet die Regelung die Pumpe (11) wieder ab, und schließt das Magnetventil (9).This continues until the heat transfer medium from the primary circuit ( 1 ) has cooled to the desired temperature. The control then switches the pump ( 11 ) off again and closes the solenoid valve ( 9 ).
Da sich die Pumpe (11) nun nicht mehr dreht, ist ein weiterer Temperaturaustausch zwischen dem Wärmeträger des Primärkreislaufes und der Kühlvorrichtung nicht mehr möglich.Since the pump ( 11 ) is no longer rotating, a further temperature exchange between the heat transfer medium of the primary circuit and the cooling device is no longer possible.
Da die Kühlvorrichtung (7) im Zusatzbehälter (12) während der Kühlpausen keine thermische Verbindung zum Wärmeträger aus dem Primärkreislauf (1) aufweist, kann ein Verjüngen des Querschnittes der Kühlvorrichtung durch Verdampfen des Wärmeträgers aus dem Betriebskühlnetz (2) und dem damit verbundenen Ablagern der gelösten Stoffe nicht eintreten, da diese Kühlvorrichtung kalt bleibt.Since the cooling device ( 7 ) in the additional container ( 12 ) has no thermal connection to the heat transfer medium from the primary circuit ( 1 ) during the cooling breaks, a tapering of the cross section of the cooling device by evaporation of the heat transfer medium from the operational cooling network ( 2 ) and the associated deposition of the dissolved substances do not enter because this cooling device remains cold.
Auch der bisherige erhöhte Energiebedarf durch schadhafte Dichtungen der Ventile (9) ist durch das thermisch trennbare Kühlsystem (3) ausgeschlossen.The previously increased energy requirement due to defective seals of the valves ( 9 ) is also excluded by the thermally separable cooling system ( 3 ).
Wäre ein Ventil (9), welches zum Abkühlen des Zusatzbehälters (12) verwendet wird, undicht, so wurde nun nur weiterhin der ohnehin gekühlte Wärmeträger im Zusatzbehälter (12) abgekühlt. Da die Pumpe (11) in diesem Falle nicht angesteuert wird, ist ein unkontrollierter Abfluß der Wärme aus dem Druckbehälter (8) unmöglich. Die Wartungs-, Instandhaltungs- und Energiekosten minimieren sich bei dieser Vorrichtung erheblich.If a valve ( 9 ), which is used to cool the additional container ( 12 ), were leaking, the heat carrier in the additional container ( 12 ), which was already cooled anyway, was only cooled. Since the pump ( 11 ) is not activated in this case, an uncontrolled outflow of heat from the pressure vessel ( 8 ) is impossible. The maintenance, repair and energy costs are minimized considerably with this device.
11
Primärkreislauf (Temperierkreislauf für Verbraucher)
Primary circuit (temperature control circuit for consumers)
22nd
Betriebskühlnetz (Wassernetz)
Company cooling network (water network)
44th
Verbraucher (z. B. Spritzgußform)
Consumers (e.g. injection mold)
55
Pumpe (primärkreislauf)
Pump (primary circuit)
66
Heizung Temperiergerät
Heating temperature control unit
77
Kühlvorrichtung Temperiergerät
Cooling device temperature control unit
88th
Druckbehälter Temperiergerät
Pressure vessel temperature control unit
99
Magnetventil
magnetic valve
1010th
Rückschlagventil
check valve
11
Primärkreislauf (Temperierkreislauf für Verbraucher)
Primary circuit (temperature control circuit for consumers)
22nd
Betriebskühlnetz (Wassernetz)
Company cooling network (water network)
33rd
Sekundärkreislauf (Verbindung zwischen Kühlsystem und Primärkreislauf)
Secondary circuit (connection between cooling system and primary circuit)
44th
Verbraucher (z. B. Spritzgußform)
Consumers (e.g. injection mold)
55
Pumpe (Primärkreislauf)
Pump (primary circuit)
66
Heizung Temperiergerät
Heating temperature control unit
77
Kühlvorrichtung Temperiergerät
Cooling device temperature control unit
88th
Druckbehälter Temperiergerät
Pressure vessel temperature control unit
99
Magnetventil
magnetic valve
1010th
Rückschlagventil
check valve
1111
Pumpe Sekundärkreislauf
Secondary circuit pump
1212th
Zusatzbehälter
Additional container
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19654531A DE19654531C1 (en) | 1996-11-11 | 1996-12-27 | Cooling device for cooling heat carriers in tempering units, e.g. for moulds or extruders |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29619534U DE29619534U1 (en) | 1996-08-28 | 1996-11-11 | Calcification and maintenance-free cooling device for temperature control units |
| DE19654531A DE19654531C1 (en) | 1996-11-11 | 1996-12-27 | Cooling device for cooling heat carriers in tempering units, e.g. for moulds or extruders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19654531C1 true DE19654531C1 (en) | 1998-05-07 |
Family
ID=8031738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19654531A Expired - Fee Related DE19654531C1 (en) | 1996-11-11 | 1996-12-27 | Cooling device for cooling heat carriers in tempering units, e.g. for moulds or extruders |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19654531C1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1044744A1 (en) * | 1999-04-16 | 2000-10-18 | BBS Motorsport & Engineering GmbH | Temperature control unit for dies or molds, particularly for pressure die-casting or injection-molding aluminium and alloys thereof, plastic materials and the like |
| DE10345076A1 (en) * | 2003-09-26 | 2005-04-21 | E On Ruhrgas Ag | Temperature control unit for industrial heat consumers |
| CN103862025A (en) * | 2012-12-13 | 2014-06-18 | 本田技研工业株式会社 | Cooling apparatus for casting mold and cooling method for casting mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1282865B (en) * | 1966-05-25 | 1968-11-14 | Volkswagenwerk Ag | Method and device for temperature control of a die casting mold |
| DE2251232B2 (en) * | 1972-10-19 | 1974-11-07 | Gerhard 5451 Oberhonnefeld Seidel | Shaft seal |
| DE2807880C2 (en) * | 1977-03-02 | 1984-02-23 | Vihorlat N.P., Snina | Temperature control device for metal casting molds |
-
1996
- 1996-12-27 DE DE19654531A patent/DE19654531C1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1282865B (en) * | 1966-05-25 | 1968-11-14 | Volkswagenwerk Ag | Method and device for temperature control of a die casting mold |
| DE2251232B2 (en) * | 1972-10-19 | 1974-11-07 | Gerhard 5451 Oberhonnefeld Seidel | Shaft seal |
| DE2807880C2 (en) * | 1977-03-02 | 1984-02-23 | Vihorlat N.P., Snina | Temperature control device for metal casting molds |
Non-Patent Citations (1)
| Title |
|---|
| DE-Z.: G.Seidel: "Zweckmäßiges Heizen und Kühlen von Druckgießformen..." in: Giesserei 60 (1973) 25, S.794-799 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1044744A1 (en) * | 1999-04-16 | 2000-10-18 | BBS Motorsport & Engineering GmbH | Temperature control unit for dies or molds, particularly for pressure die-casting or injection-molding aluminium and alloys thereof, plastic materials and the like |
| DE10345076A1 (en) * | 2003-09-26 | 2005-04-21 | E On Ruhrgas Ag | Temperature control unit for industrial heat consumers |
| CN103862025A (en) * | 2012-12-13 | 2014-06-18 | 本田技研工业株式会社 | Cooling apparatus for casting mold and cooling method for casting mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: REGLOPLAS AG, ST GALLEN, CH |
|
| 8328 | Change in the person/name/address of the agent |
Free format text: LEWINSKY & PARTNER GBR, PAT.- UND RECHTSANWAELTE, 80689 MUENCHEN |
|
| 8381 | Inventor (new situation) |
Free format text: KAA, JOHANN, 92272 FREUDENBERG, DE |
|
| 8328 | Change in the person/name/address of the agent |
Representative=s name: VERSCHT, T., DIPL.-PHYS.(UNIV.), PAT.-ANW., 80797 |
|
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140701 |