DE1679998A1 - Device for heating continuous webs of material, in particular webs of thermoplastic materials - Google Patents
Device for heating continuous webs of material, in particular webs of thermoplastic materialsInfo
- Publication number
- DE1679998A1 DE1679998A1 DE19671679998 DE1679998A DE1679998A1 DE 1679998 A1 DE1679998 A1 DE 1679998A1 DE 19671679998 DE19671679998 DE 19671679998 DE 1679998 A DE1679998 A DE 1679998A DE 1679998 A1 DE1679998 A1 DE 1679998A1
- Authority
- DE
- Germany
- Prior art keywords
- heating
- webs
- reflector
- web
- continuous
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
-
- 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
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
-
- 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
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
Description
Vorrichtung zum Aufheisen von durchlaufenden Warenbahnen, insbesondere Warenbahnen aus thernoplastischen Kunststoffen Die Erfindung bezieht sich auf eine vorrichtung zum Aufheizen von durchlaufenden Warenbahnen, insbesondere Warenbahnen aus thermoplastischen Kunststoffen.Device for heating continuous webs of material, in particular Material webs made of thermoplastic plastics The invention relates to a Device for heating continuous webs of material, in particular webs of material made of thermoplastics.
Beia Prägen, laminieren und ähnlichen Arbeitsvorgängen von thermoplastischen Kunststoffwarenbahnen ist es erforderlich, diese vor dem Verfomungs- bzw. Verschwei#vorgang durch Wärmceinwirkung in einen plastischen Zustand zu bringen. Dazu verwendet jan in allgemeinen Infrarotstrahler, die über die Breite der Warenbahn im Abstand von dieser angeordnet sind. Derartige Infrarotstrahler weisen iS der Regel quer zur Laufriohtung zur Warenbahn verlaufende heizstäbe sowie sur besseren Wärmeausnutzung einen Reflektor auf. Die Heizstäbe selbst sind üblicherweise als dünne Stahlhohlstäbe ausgeführt, in denen die eigentlichen Heizelemente angeordnet sind und während des Eeizvorganges den Stahl auf Rotglut erhitzen. Der Reflektor besteht üblicherweise-aus Blech.For embossing, laminating and similar thermoplastic operations It is necessary to make plastic webs of goods before the shaping or welding process brought into a plastic state by the action of heat. To do this, jan in general infrared emitters that are spaced across the width of the web of material these are arranged. Such infrared emitters generally have transverse to Heating rods running in the direction of the web as well as better heat utilization a reflector on. The heating rods themselves are usually called thin steel hollow rods, in which the actual heating elements are arranged and heat the steel to red heat during the heating process. The reflector usually consists of sheet metal.
Die bekannten Vorrichtungen dieser Art zum Aufheizen durchlaufender Warenbahnen heizen über die Breite der Warenbahn ungleichmässig, und zwar derart, daß die Warenbahnmitte stärker aufgeheizt wird als die Randzonen. Ursache dieser ungleichmässigen Erwärmung sind Streuungsverluste am Rand und Luftströmungen, die durch die Thermikwirkungen und durch die unter der Heizvorrichtung durchlaufende Warenbahn hervorgerufen werden.The known devices of this type for heating continuous Material webs heat unevenly across the width of the material web in such a way that that the middle of the web is heated more than the edge zones. Cause this uneven heating are scattering losses at the edge and air currents that by the thermal effects and by the one passing under the heating device Web are caused.
Als Folge der ungleichmässigen Heizung treten Verzerrungen in der Warenbahn auf, die zu uneinheitlichen Prägergebnissen und dgl. führen. Man hat deshalb schon versucht, zum Ausgleich der Ungleichmässigkeiten zusätzliche Strahler in den Randzonen anzubringen. Diese Lösung ist jedoch konstruktiv zu aufwendig.As a result of the uneven heating, distortions occur in the Material web that lead to inconsistent embossing results and the like. That's why you have already tried to compensate for the irregularities additional radiators in the To attach edge zones. However, this solution is too expensive to construct.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Aufheizen der vorbeschriebenen Art zu schaffen, die eine gleichmässige Aufheizung der Warenbahn über die gesamte Breite ermöglicht.The invention is therefore based on the object of providing a device for Heating of the type described above to create an even heating of the web across the entire width.
Zur Lösung dieser aufgabe schlägt die erfindung vor, daß der Abstand der Heizung (Heizstäbe) von dem Reflektor von der Mitte zu den beiderseitigen Enden hin abnimmt. Dabei können entweder die Heizstäbe, in ihrer Längserstreckung gesehen, gerade und der Reflektor gekrümmt ausgebildet sein oder umgekehrt.To solve this problem, the invention proposes that the distance the heater (heating rods) from the reflector from the middle to the ends on both sides decreases towards. Either the heating rods, seen in their longitudinal extension, can be straight and the reflector curved or vice versa.
Insbesondere im erstgenannten Falle ist es möglich eine einfache Einregulierung des Abstandes zwischen Heizstäben und zu Reflektor dadurch/erreichen, daß der Reflektor beidseitig nach Art eines Flügels um eine in Laufrichtung der Warenbahn verlaufende Achse verschwenkbar ist.In the first case in particular, simple adjustment is possible the distance between the heating rods and to the reflector in that the reflector on both sides in the manner of a wing around one running in the direction of travel of the material web Axis is pivotable.
In der Zeichnung ist die Erfindung anhand eines husführungsbeispieles naher veranschaulicht. Es zeigen: Fig. 1 eine erste Ausführungsform der Erfindung in schematisch gehaltener Schnittdarstellung und Fig. 2 einen Schnitt gemäß der Linie II-II in der Fig. 1, Fig. 3 eine zweite Ausführungsform ebenfalls in schematisch gehaltener Schnittdarstellung.In the drawing, the invention is based on a husführungbeispieles illustrated in more detail. 1 shows a first embodiment of the invention in a schematic sectional view and FIG. 2 shows a section according to FIG Line II-II in Fig. 1, Fig. 3 a second embodiment also in schematic held sectional view.
In allen Ausführungsbeispielen ist eine in Richtung des Pfeiles a durchlaufende Warenbahn 1 aus thermoplastischem Kunststoff zur Aufheizung und dementsprechend Plastifizierung im Abstand unter Aufheizvorrichtung 2 bzw. 3 angeordnet.In all the exemplary embodiments, one in the direction of arrow a continuous web 1 made of thermoplastic material for heating and accordingly Plasticization arranged at a distance under the heating device 2 and 3, respectively.
Sowohl die Aufheizvorrichtung 2 als auch die Aufheizvorrichtung 3 weisen einen Rahmen 4 auf, in dem Heizstäbe 5 bzw. 6 befestigt sind0 Oberhalb dieser Heizstäbe sind Reflektorbleche 7 bzw. 8 vorgesehen.Both the heating device 2 and the heating device 3 have a frame 4 in which heating rods 5 and 6, respectively are attached0 Reflector plates 7 and 8 are provided above these heating rods.
Bei der Ausführungsform gemäß Fig. 1 und 2 sind die dort gezeigten Heizstäbe 5 gerade und das aeflektortlech 7 gekrümmt ausgebildet.In the embodiment according to FIGS. 1 and 2, those are shown there Heating rods 5 are straight and the aeflektortlech 7 is curved.
Dabei verläuft die Krümmung so, daß der Abstand der -Heizstäbe 5 von dem Reflektor 7 von der Mitte zu den beiderseitigen Enden hin abnimmt. Erfindungsgemäß wird dadurch erreicht, daß dbe Heizstäbe an ihren Enden stärker erhitzt werden als in der Mitte, so daß die darunter befindliche Warenbahn trotz der an ihren Rändern la und 1b auftretenden Wärmeverluste gleichmäßig aufgeheizt wird. Eine gewisse Einregulierungsmöglichkeit für die erwärmung der unter der Aufheizeinrichtung befindlichen Warenbahn ergibt sich dadurch, daß der Reflektor 7 beidseitig nach Art eines Flügels um Achsen 9 verschwenkbar gelagert ist. Zur Verstellung kann beispielsweise eine (nicht dargestellte) Spindel dienen.The curvature is such that the distance between the heating rods 5 from the reflector 7 decreases from the center to the ends on both sides. According to the invention is achieved in that the heating rods are heated more strongly at their ends than in the middle, so that the web of goods underneath is in spite of the at its edges la and 1b occurring heat losses is heated evenly. A certain possibility of adjustment for heating the web located under the heating device in that the reflector 7 on both sides around axes 9 in the manner of a wing is pivotably mounted. For adjustment, for example, a (not shown) Serve spindle.
Die Ausführungsform gemäß Fig. 3 unterscheidet sich von derjenigen nach den Fige 1 und 2 dadurch, daß hier das Reflektorblech ebenflächig und die Heizstäbe 6 gekrümmt ausgebildet sind, wodurch der Abstand zwischen Heizstäben 6 und Reflektorblech ebenfalls im Sinne der erfindung eingestellt werden kann.The embodiment according to FIG. 3 differs from that according to FIGS. 1 and 2 in that the reflector plate is flat here and the heating rods 6 are curved, whereby the distance between heating rods 6 and reflector plate can also be adjusted within the meaning of the invention.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0054023 | 1967-09-05 | ||
| DED0054023 | 1967-09-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1679998A1 true DE1679998A1 (en) | 1971-04-22 |
| DE1679998B2 DE1679998B2 (en) | 1975-11-13 |
| DE1679998C3 DE1679998C3 (en) | 1976-06-24 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2204496A1 (en) * | 1972-10-25 | 1974-05-24 | Bellaplast Gmbh | In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product |
| FR2313190A1 (en) * | 1975-06-04 | 1976-12-31 | Bayer Ag | METHOD AND MACHINE FOR DRYING POLYCHLOROPRENE SHEETS |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2204496A1 (en) * | 1972-10-25 | 1974-05-24 | Bellaplast Gmbh | In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product |
| FR2313190A1 (en) * | 1975-06-04 | 1976-12-31 | Bayer Ag | METHOD AND MACHINE FOR DRYING POLYCHLOROPRENE SHEETS |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1679998B2 (en) | 1975-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |