DE10223626A1 - Plasticizing unit for injection molding machine, has plasticizing screw in cylindrical housing and extrusion head, at least one of these having heat-producing coating - Google Patents
Plasticizing unit for injection molding machine, has plasticizing screw in cylindrical housing and extrusion head, at least one of these having heat-producing coatingInfo
- Publication number
- DE10223626A1 DE10223626A1 DE10223626A DE10223626A DE10223626A1 DE 10223626 A1 DE10223626 A1 DE 10223626A1 DE 10223626 A DE10223626 A DE 10223626A DE 10223626 A DE10223626 A DE 10223626A DE 10223626 A1 DE10223626 A1 DE 10223626A1
- Authority
- DE
- Germany
- Prior art keywords
- plasticizing
- injection molding
- molding machine
- screw
- heat
- 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.)
- Ceased
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 5
- 239000011248 coating agent Substances 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title abstract 2
- 238000001125 extrusion Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- B29C45/74—Heating or cooling of the injection unit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Plastifziereinheit einer Spritzgießmaschine, die mindestens die Teilelemente Plastifizierschnecke, Schneckenzylinder, Düsenkopf und Düse umfasst, wobei mindestens eines der Teilelemente mit Mitteln beheizbar ist. The invention relates to a plasticizing unit of an injection molding machine, the at least the partial elements of the plasticizing screw, Includes screw cylinder, nozzle head and nozzle, at least one of the Partial elements can be heated with means.
Plastifiziereinheiten von Spritzgießmaschinen sind bekannt und werden zur Verarbeitung von Kunststoff eingesetzt. Hierbei wird der Kunststoff durch Scherkräfte einer Plastifizierschnecke aufgeschmolzen und in dem vorgewärmten Schneckenzylinder bis zur Düse gefördert, von wo aus der plastifizierte Kunststoff in ein Werkzeug eingespritzt wird. Plasticizing units of injection molding machines are known and are used for processing plastic. This is the plastic melted by shear forces of a plasticizing screw and in the preheated screw cylinder conveyed to the nozzle, from where the plasticized plastic is injected into a tool.
Die Erwärmung der Schnecke wird im allgemeinen mit elektrischen Heizelementen oder Heizbändern realisiert. Diese Heizbänder benötigen zur Eigenstabilität eine Mindeststärke und sind folglich träge bezüglich der erforderlichen Temperaturveränderung. The heating of the snail is generally done with electrical Heating elements or heating tapes realized. These heating tapes need a minimum strength for inherent stability and are therefore sluggish with respect the required temperature change.
Aufgabe der Erfindung ist es, eine Plastifiziereinheit derart weiterzubilden, dass das Erwärmen von Teilelementen der Plastifiziereinheit besser regulierbar ist. The object of the invention is a plasticizing unit such to further develop that the heating of partial elements of the Plasticizing unit is easier to regulate.
Die Lösung der Aufgabe ist dadurch gekennzeichnet, dass das Mittel zum Beheizen eine thermisch aufgetragene Heizschicht ist. Vorteilhafterweise werden die Heizschichten direkt auf das Teilelement aufgetragen. Um eine Austauschbarkeit der Heizschicht zu ermöglichen, ist vorgesehen, die Heizschicht auf eine Trägersubstanz aufzutragen, wobei die Trägersubstanz thermisch leitend mit dem Teilelement verbunden ist. The solution to the problem is characterized in that the Means for heating is a thermally applied heating layer. The heating layers are advantageously applied directly to the partial element applied. In order to enable the heating layer to be replaced provided to apply the heating layer to a carrier, wherein the carrier substance is thermally conductively connected to the partial element.
Als Heizschicht ist eine Widerstandslegierung vorgesehen, die im Plasmaflammspritzen aufgetragen wird. Derartige Widerstandslegierungen haben sich bereits beim Einsatz in Haushaltsgeräten wie Backöfen bewährt. Der Vorteil der aufgespritzten Widerstandslegierungen liegt darin, dass die Heizschichten sehr dünn sein können und dadurch schnell aufheizen, wodurch die Regulierbarkeit wesentlich erhöht wird. A resistance alloy is provided as the heating layer Plasma flame spraying is applied. Such resistance alloys have already been used in household appliances such as ovens proven. The advantage of the sprayed resistance alloys is in that the heating layers can be very thin and therefore fast heat up, which increases the controllability significantly.
In der Zeichnung ist ein Beispiel eines beschichteten Teilelementes schematisch dargestellt. In the drawing is an example of a coated partial element shown schematically.
Die Figur zeigt schematisch eine Plastifiziereinheit 1 mit den Teilelementen Plastifizierschnecke 2, Schneckenzylinder 3, Düsenkopf 4 und Düse 5. Beispielhaft ist die Düse 5 mit einer Heizschicht 6 versehen, wobei die Heizschicht 6 direkt aufgetragen ist. The figure shows schematically a plasticizing unit 1 with the partial elements plasticizing screw 2 , screw cylinder 3 , nozzle head 4 and nozzle 5 . For example, the nozzle 5 is provided with a heating layer 6 , the heating layer 6 being applied directly.
Der Schneckenzylinder 3 ist mit Elementen aus einer Trägersubstanz 7 bestückt und die Trägersubstanz 7 ist wiederum mit der Heizschicht 6 beschichtet. Die Heizschicht ist über Elektroden mit einer Energiequelle verbunden, die über eine Regeleinheit reguliert wird. Durch Veränderung der Spannung ist die Temperatur stufenlos veränderbar. The screw cylinder 3 is equipped with elements made of a carrier substance 7 and the carrier substance 7 is in turn coated with the heating layer 6 . The heating layer is connected to an energy source via electrodes, which is regulated by a control unit. The temperature can be changed continuously by changing the voltage.
Mit der vorgeschlagenen Lösung können Teilelemente einer Plastifiziereinheit erhitzt werden, wobei die Temperatur einfach zu regeln ist. With the proposed solution, partial elements of a Plasticizing unit are heated, the temperature is easy to regulate.
Der Einsatz der aufgespritzten Widerstandslegierung als Heizschicht
eignet sich ebenfalls für kleinere Spritzgießwerkzeuge oder Teilbereiche
eines Spritzgießwerkzeuges.
Bezugszeichenliste
1 Plastifiziereinheit
2 Plastifizierschnecke
3 Schneckenzylinder
4 Düsenkopf
5 Düse
6 Heizschicht
7 Trägersubstanz für Heizschicht 6
The use of the sprayed-on resistance alloy as a heating layer is also suitable for smaller injection molds or partial areas of an injection mold. Reference Signs List 1 plasticizing
2 plasticizing screw
3 screw cylinders
4 nozzle heads
5 nozzle
6 heating layer
7 carrier substance for heating layer 6
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10223626A DE10223626A1 (en) | 2001-07-06 | 2002-05-28 | Plasticizing unit for injection molding machine, has plasticizing screw in cylindrical housing and extrusion head, at least one of these having heat-producing coating |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20111261U DE20111261U1 (en) | 2001-07-06 | 2001-07-06 | Plasticizing unit of an injection molding machine |
| DE10223626A DE10223626A1 (en) | 2001-07-06 | 2002-05-28 | Plasticizing unit for injection molding machine, has plasticizing screw in cylindrical housing and extrusion head, at least one of these having heat-producing coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10223626A1 true DE10223626A1 (en) | 2003-01-30 |
Family
ID=7959023
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20111261U Expired - Lifetime DE20111261U1 (en) | 2001-07-06 | 2001-07-06 | Plasticizing unit of an injection molding machine |
| DE10223626A Ceased DE10223626A1 (en) | 2001-07-06 | 2002-05-28 | Plasticizing unit for injection molding machine, has plasticizing screw in cylindrical housing and extrusion head, at least one of these having heat-producing coating |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20111261U Expired - Lifetime DE20111261U1 (en) | 2001-07-06 | 2001-07-06 | Plasticizing unit of an injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE20111261U1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4436013A1 (en) | 1994-10-08 | 1996-04-18 | Wolfgang Kurz | Heating system for heating of fluid or flowable media continuously or intermittently |
| DE19941038A1 (en) | 1999-08-28 | 2001-03-01 | Guenther Heiskanaltechnik Gmbh | Electric heater for hot runner systems and method for producing such a heater |
| DE29918057U1 (en) | 1999-10-08 | 2000-01-13 | Battenfeld Gmbh, 58540 Meinerzhagen | Device for the investment casting of molded parts made of wax |
-
2001
- 2001-07-06 DE DE20111261U patent/DE20111261U1/en not_active Expired - Lifetime
-
2002
- 2002-05-28 DE DE10223626A patent/DE10223626A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE20111261U1 (en) | 2001-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8131 | Rejection |