WO1996005957A2 - Method of producing high-precision support surfaces for materials to be exposed to light - Google Patents

Method of producing high-precision support surfaces for materials to be exposed to light Download PDF

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Publication number
WO1996005957A2
WO1996005957A2 PCT/DE1995/001087 DE9501087W WO9605957A2 WO 1996005957 A2 WO1996005957 A2 WO 1996005957A2 DE 9501087 W DE9501087 W DE 9501087W WO 9605957 A2 WO9605957 A2 WO 9605957A2
Authority
WO
WIPO (PCT)
Prior art keywords
tool
impression
component
light
contact surface
Prior art date
Application number
PCT/DE1995/001087
Other languages
German (de)
French (fr)
Other versions
WO1996005957A3 (en
Inventor
Hartmut Hugo Paul Albrecht
Original Assignee
Linotype-Hell Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linotype-Hell Ag filed Critical Linotype-Hell Ag
Priority to EP95928437A priority Critical patent/EP0777570A1/en
Priority to JP8507694A priority patent/JPH09510667A/en
Publication of WO1996005957A2 publication Critical patent/WO1996005957A2/en
Publication of WO1996005957A3 publication Critical patent/WO1996005957A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms

Definitions

  • the object of the invention is to produce these inner cylindrical surfaces with high precision and in a simple, cost-saving manner.
  • the aim is to produce a high-precision, large, bowl-shaped surface that has a reproducibility that is closely tolerated in the manufacturing process.
  • Fig. 2 shows a longitudinal cross section through the molding tool
  • FIG. 3 shows a detail from FIG. 2.
  • a molding tool (1) is shown in section, with the aid of which the required high-precision surface is to be molded in a component (2), also shown as a sectional image.
  • the required high-precision surface (3) is molded on an outer cylinder.
  • the impression cylinder used is with the desired one Precision manufactured.
  • the component (2) is the bed of an inner drum imagesetter, which already has the rough geometry of the required area and which, among other things, is to have a high-precision inner cylindrical surface for receiving the film material.
  • the component (2) is positioned with respect to the molding tool (1) so that the position of the outer surface (3) of the molding tool (1) is in the desired later position.
  • the surface (3) to be molded must meet the requirements with regard to the desired accuracy and surface quality.
  • component (2) and impression tool (1) is shown in the side view in FIG.
  • another high-precision surface (5) is molded, which will later be used to hold another component. If necessary, other high-precision surfaces that are in close tolerance to each other can of course be molded, which will later be used to hold additional components.
  • the tool (1) and the component (2) must then be prepared accordingly.
  • the molded outer surface (3) later serves as a contact surface (3) for materials to be exposed.
  • the gap between the impression tool (1) and the workpiece (2) is filled with an impression compound (4).
  • FIG. 3 shows a detail A from FIG. 2, in which it is shown that the application of structures is also possible in the high-precision surface (3).
  • structures that serve as air channels (6) for the subsequent application of vacuum for sucking the film into the surface (3) can also be molded at the same time.
  • Such structures can advantageously be produced in such a way that a negative of the structure is applied to the surface of the molding tool, either by gluing on corresponding negative structures or, in the event that large structures are desired, by gluing on corresponding negative foils.
  • the impression material (4) After the impression material (4) has been introduced, it can harden and after the hardening, the impression tool is removed. It may be necessary to remove excess molding compound from the edges, which is done by plastering the impression surfaces. After the curing process, an area is obtained which corresponds to the quality of the outer cylindrical shape of the molding tool. It is also within the scope of the invention to mold the required area directly on an outer cylindrical shape, which has the shape of the impression tool (1), for example. In this case, carbon fibers or glass fibers which are impregnated with liquid epoxy resin can advantageously be wound onto the molding tool (1) at certain angles. After curing, a cylindrical tube is formed, which is separated into two halves, whereby two usable half-shells, each with a highly precise contact surface (3), are created. To ensure that the cylinder contour is not deformed when it is cut open, a layer structure made of carbon or glass fibers and honeycomb material that is matched to the dimensions must be provided.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

The invention concerns a method of producing high-precision support surfaces for materials to be exposed to light in reproduction equipment. The method calls for a moulding tool (1) to be manufactured which has the correct high-precision support surface (3) for the light-sensitive material. A component (2) designed to be given the support surface is prefabricated in such a way that it can hold the moulding tool with the interposition of an air gap between the component and the tool. The tool and component are positioned relative to each other, maintaining the air gap, in such a way that the subsequent position of the support surface is determined by the position of the outside surface of the moulding tool with respect to the prefabricated component. The air gap is filled with moulding compound (4). Following hardening of the moulding compound, the moulding tool is removed.

Description

Verfahren zur Herstellung von hochgenauen Anla eflächen für zu belichtende MaterialienProcess for the production of high-precision contact surfaces for materials to be exposed
Um Filmmaterialien oder sonstiges lichtempfindliches Material belichten zu können, müssen diese Materialien auf einer Fläche mit hinreichend genauem Abstand zur Belichtunsquelle positioniert und fixiert werden. Falls hierzu ebene Flächen als An¬ lageflächen für das lichtempfindliche Material benutzt werden, ist deren genaue plane Bearbeitung relativ unproblematisch. Auch in Fällen, z.B. bei Belichtern, bei denen zur Aufnahme des Filmmaterials eine rotierende Trommel vorgesehen ist, auf die das lichtempfindliche Material aufgespannt wird, ist die Bearbeitung der Auf¬ spannfläche einfach, da die Trommel rotationssymmetrisch ist. In der Reproduk¬ tionstechnik werden aber auch sog. Innentrommelbelichter verwendet, bei denen insbesondere bei großen Formaten des lichtempfindlichen Materials größere innen¬ zylindrische Flächen auf die erforderliche Präzision gebracht werden müssen. Dies ist aufwendig und erreicht nicht die geforderte reproduzierbare Genauigkeit.In order to be able to expose film material or other light-sensitive material, these materials must be positioned and fixed on a surface with a sufficiently precise distance from the exposure source. If, for this purpose, flat surfaces are used as contact surfaces for the light-sensitive material, their exact plane processing is relatively unproblematic. Also in cases, e.g. In the case of imagesetters in which a rotating drum is provided for receiving the film material, onto which the light-sensitive material is clamped, the machining of the clamping surface is simple since the drum is rotationally symmetrical. However, so-called inner drum imagesetters are also used in reproduction technology, in which larger inner cylindrical surfaces, particularly in the case of large formats of the light-sensitive material, have to be brought to the required precision. This is complex and does not achieve the required reproducible accuracy.
Aufgabe der Erfindung ist es, diese innenzylindrischen Flächen mit hoher Präzision und auf einfache, kostensparende Weise herzustellen. Dabei soll eine hochgenaue große schalenförmige Fläche hergestellt werden, die eine im Fertigungsprozeß eng tolerierte Reproduzierbarkeit aufweist.The object of the invention is to produce these inner cylindrical surfaces with high precision and in a simple, cost-saving manner. The aim is to produce a high-precision, large, bowl-shaped surface that has a reproducibility that is closely tolerated in the manufacturing process.
Die Erfindung erreicht dies durch die im kennzeichnenden Teil des Anspruchs 1 an¬ gegebenen Merkmale. Vorteilhafte Weiterbildungen sind in den Unteransprüchen 2 bis 4 angegeben.The invention achieves this by the features given in the characterizing part of claim 1. Advantageous further developments are specified in subclaims 2 to 4.
Die Erfindung wird im folgenden anhand der Figuren 1 bis 3 näher erleutert. Es zeigen:The invention is explained in more detail below with reference to FIGS. 1 to 3. Show it:
Fig. 1 ein Querschnitt durch das Abformwerkzeug,1 is a cross section through the molding tool,
Fig. 2 einen Längsquerschnitt durch das Abformwerkzeug undFig. 2 shows a longitudinal cross section through the molding tool and
Fig. 3 einen Ausschnitt aus der Fig 2.3 shows a detail from FIG. 2.
In Fig 1. ist im Schnitt ein Abformwerkzeug (1) dargestellt, mit dessen Hilfe in einem ebenfalls als Schnittbild dargestellten Bauteil (2) die geforderte hochpräzise Fläche abgeformt werden soll. Die benötigte hochgenaue Fläche (3) wird an einem Außen¬ zylinder abgeformt. Der verwendete Abformzylinder ist mit der gewünschten Genauigkeit gefertigt. Im vorliegenden Fall ist das Bauteil (2) das Bett eines Innen- trommelbelichters, das schon die Grobgeometrie der benötigten Fläche aufweist und das u.a. eine hochpräzise innenzylindrische Fläche zur Aufnahme des Filmmaterials erhalten soll. Das Bauteil (2) wird im Hinblick auf das Abformwerkzeug (1) so posi- tioniert, daß die Lage der Außenfläche (3) des Abformwerkzeuges (1) in der gewün¬ schten späteren Position ist. Die abzuformende Fläche (3) muß die gestellten Anfor¬ derungen hinsichtlich der gewünschten Genauigkeit und der Oberflächengüte erfül¬ len.In FIG. 1, a molding tool (1) is shown in section, with the aid of which the required high-precision surface is to be molded in a component (2), also shown as a sectional image. The required high-precision surface (3) is molded on an outer cylinder. The impression cylinder used is with the desired one Precision manufactured. In the present case, the component (2) is the bed of an inner drum imagesetter, which already has the rough geometry of the required area and which, among other things, is to have a high-precision inner cylindrical surface for receiving the film material. The component (2) is positioned with respect to the molding tool (1) so that the position of the outer surface (3) of the molding tool (1) is in the desired later position. The surface (3) to be molded must meet the requirements with regard to the desired accuracy and surface quality.
In der Fig. 2. ist die Anordnung von Bauteil (2) und Abformwerkzeug (1) in der Sei¬ tenansicht dargestellt. Wie zu erkennen ist, wird neben der Außenfläche (3) eine weitere hochpräzise Fläche (5) abgeformt, die später zur Aufnahme eines anderen Bauteils dient. Es können natürlich, falls erforderlich, weitere hochpräzise Flächen, die in enger Toleranz zueinander stehen, abgeformt werden, die später zur Auf- nähme weiterer Bauteile dienen. Das Werkzeug (1 ) und das Bauteil (2) müssen dann entsprechend vorbereitet werden. Die abgeformte Außenfläche (3) dient später als Anlagefläche (3) für zu belichtende Materialien.The arrangement of component (2) and impression tool (1) is shown in the side view in FIG. As can be seen, in addition to the outer surface (3), another high-precision surface (5) is molded, which will later be used to hold another component. If necessary, other high-precision surfaces that are in close tolerance to each other can of course be molded, which will later be used to hold additional components. The tool (1) and the component (2) must then be prepared accordingly. The molded outer surface (3) later serves as a contact surface (3) for materials to be exposed.
Nachdem das Bauteil (2) in bezug auf das Abformwerkzeug (1) justiert worden ist, wird der Spalt zwischen dem Abformwerkzeug (1) und dem Werkstück (2) mit einer Abformmasse (4) gefüllt.After the component (2) has been adjusted with respect to the impression tool (1), the gap between the impression tool (1) and the workpiece (2) is filled with an impression compound (4).
Fig. 3 zeigt einen Ausschnitt A aus Fig. 2, in dem gezeigt ist, daß in der hochprä¬ zisen Fläche (3) auch das Aufbringen von Strukturen möglich ist. So können bei- spielsweise solche Strukturen, die als Luftkanäle (6) für das spätere Anlegen von Vakuum zum Ansaugen des Films in der Fläche (3) dienen, gleichzeitig mit abge¬ formt werden. Die Herstellung solcher Strukturen kann in vorteilhafter Weise derart erfolgen, daß auf die Oberfläche des Abformwerkzeuges ein Negativ der Struktur aufgebracht wird, sei es durch Aufkleben von entsprechenden Negativstrukturen, oder im Falle, daß man großflächige Strukturen haben will, durch Aufkleben ent¬ sprechender Negativfolien.FIG. 3 shows a detail A from FIG. 2, in which it is shown that the application of structures is also possible in the high-precision surface (3). For example, structures that serve as air channels (6) for the subsequent application of vacuum for sucking the film into the surface (3) can also be molded at the same time. Such structures can advantageously be produced in such a way that a negative of the structure is applied to the surface of the molding tool, either by gluing on corresponding negative structures or, in the event that large structures are desired, by gluing on corresponding negative foils.
Nachdem die Abformmasse (4) eingebracht worden ist, kann diese aushärten und nach dem Aushärten wird das Abformwerkzeug entfernt. Es kann erforderlich wer- den, an den Rändern überstehende Formmasse zu entfernen, was durch Verputzen der Abformflächen erfolgt. Nach dem Aushärtungsprozeß erhält man so eine Fläche, die der Qualität der Außenzylinderform des Abformwerkzeuges entspricht. Es liegt auch im Rahmen der Erfindung, die benötigte Fläche direkt an einer Außen- zylinderform, die z.B. die Form des Abformwerkzeug (1) hat, abzuformen. Dabei können in vorteilhafter Weise Kohlenstoffasern bzw. Glasfasern, die mit flüssigem Epoxidharz getränkt sind, unter bestimmten Winkeln auf das Abformwerkzeug (1) gewickelt werden. Nach dem Aushärten entsteht ein Zylinderrohr, das in zwei Hälf¬ ten getrennt wird, wobei zwei verwendbare Halbschalen mit je einer hochgenauen Anlagefläche (3) entstehen. Damit die Zylinderkontur beim Aufschneiden nicht de¬ formiert wird, ist ein auf die Abmessungen abgestimmter Schichtaufbau aus Kohle¬ bzw. Glasfasern und Wabenmaterial vorzusehen. After the impression material (4) has been introduced, it can harden and after the hardening, the impression tool is removed. It may be necessary to remove excess molding compound from the edges, which is done by plastering the impression surfaces. After the curing process, an area is obtained which corresponds to the quality of the outer cylindrical shape of the molding tool. It is also within the scope of the invention to mold the required area directly on an outer cylindrical shape, which has the shape of the impression tool (1), for example. In this case, carbon fibers or glass fibers which are impregnated with liquid epoxy resin can advantageously be wound onto the molding tool (1) at certain angles. After curing, a cylindrical tube is formed, which is separated into two halves, whereby two usable half-shells, each with a highly precise contact surface (3), are created. To ensure that the cylinder contour is not deformed when it is cut open, a layer structure made of carbon or glass fibers and honeycomb material that is matched to the dimensions must be provided.

Claims

Patentansprüche claims
1. Verfahren zur Herstellung von hochgenauen Anlageflächen für zu belichtende Materialien in der Reproduktionstechnik, dadurch gekennzeichnet, daß ein Abformwerkzeug (1) hergestellt wird, das die entsprechende hochgenaue An¬ lagefläche (3) für das lichtempfindliche Material aufweist, daß das Bauteil (2), das die hochgenaue Anlagefläche (3) erhalten soll, so vorgefertigt wird, daß es unter Zwischenschaltung eines Luftspaltes zwischen Bauteil (2) und Abform¬ werkzeug (1 ) zur Aufnahme des Abformwerkzeuges (1) geeignet ist, daß Ab- formwerkzeug (1 ) und Bauteil (2) unter Beibehaltung des Luftspaltes relativ so zueinander positioniert werden, daß die spätere Lage der hochgenauen An¬ lagefläche (3) durch die Lage der Außenoberfläche des Abformwerkzeuges (1 ) in bezug auf das vorgefertigte Bauteil (2) gegeben ist, daß der Luftspalt mit Abformmasse (4) gefüllt wird und daß nach dem Aushärten der Abformmasse (4) das Abformwerkzeug (1) entfernt wird.1. A process for the production of high-precision contact surfaces for materials to be exposed in reproduction technology, characterized in that an impression tool (1) is produced which has the corresponding high-precision contact surface (3) for the light-sensitive material that the component (2) , which is to maintain the high-precision contact surface (3), is prefabricated such that, with the interposition of an air gap between component (2) and impression tool (1) for receiving the impression tool (1), the impression tool (1) is suitable and component (2) are positioned relative to each other while maintaining the air gap so that the later position of the highly precise contact surface (3) is given by the position of the outer surface of the molding tool (1) in relation to the prefabricated component (2) that the air gap is filled with impression material (4) and that the impression tool (1) is removed after the impression material (4) has hardened.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß weitere Abfor¬ moberflächen (5), die in eng tolerierter Beziehung zu der Anlagefläche stehen, am Abformwerkzeug (1) angeordnet sind und mit abgeformt werden.2. The method according to claim 1, characterized in that further Abfor¬ moberflächen (5), which are closely tolerated relationship to the contact surface, are arranged on the molding tool (1) and are molded with.
Verfahren nach Anspruch 2 bis 4, dadurch gekennzeichnet, daß in die hoch¬ genaue Anlagefläche (3) eine Struktur (6) eingebracht wird, indem auf das Ab¬ formwerkzeug (1 ) vor dem Abformen die gewünschte Struktur als Negativ auf¬ gebracht wird.Method according to Claims 2 to 4, characterized in that a structure (6) is introduced into the highly accurate contact surface (3) by applying the desired structure as a negative to the molding tool (1) before molding.
4. Verfahren zur Herstellung hochgenauer Anlageflächen für lichtempfindliche Materialien in der Reproduktionstechnik, dadurch gekennzeichnet, daß ein Abformwerkzeug (1) hergestellt wird, das die entsprechende hochgenaue An¬ lagefläche (3) für das lichtempfindliche Material aufweist, daß das Abform- Werkzeug (1 ) mit Kohlefasern bzw. Glasfasern, die mit Epoxidharz getränkt sind, unter bestimmten Winkeln umwickelt wird, daß nach dem Aushärten ein Zylinderrohr auf dem Abformwerkzeug (1 ) entsteht, das in zwei Hälften ge¬ trennt wird und daß das Zylinderrohr aus einen Schichtaufbau aus Kohle- bzw. Glasfasern und Wabenmaterial besteht. 4. Process for the production of highly accurate contact surfaces for light-sensitive materials in reproduction technology, characterized in that an impression tool (1) is produced which has the corresponding high-precision contact surface (3) for the light-sensitive material that the impression tool (1) with carbon fibers or glass fibers, which are impregnated with epoxy resin, is wrapped at certain angles so that after curing, a cylinder tube is formed on the molding tool (1), which is separated in two halves, and that the cylinder tube consists of a layer structure made of carbon or glass fibers and honeycomb material.
PCT/DE1995/001087 1994-08-23 1995-08-16 Method of producing high-precision support surfaces for materials to be exposed to light WO1996005957A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95928437A EP0777570A1 (en) 1994-08-23 1995-08-16 Method of producing high-precision support surfaces for materials to be exposed to light
JP8507694A JPH09510667A (en) 1994-08-23 1995-08-16 Method for producing a highly precise contact surface for a material to be exposed

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4429866.8 1994-08-23
DE19944429866 DE4429866A1 (en) 1994-08-23 1994-08-23 Process for the production of high-precision contact surfaces for materials to be exposed

Publications (2)

Publication Number Publication Date
WO1996005957A2 true WO1996005957A2 (en) 1996-02-29
WO1996005957A3 WO1996005957A3 (en) 1996-07-18

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ID=6526348

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PCT/DE1995/001087 WO1996005957A2 (en) 1994-08-23 1995-08-16 Method of producing high-precision support surfaces for materials to be exposed to light

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EP (1) EP0777570A1 (en)
JP (1) JPH09510667A (en)
DE (1) DE4429866A1 (en)
WO (1) WO1996005957A2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1170917A (en) * 1957-03-22 1959-01-20 Precision optical element molding process
US3654009A (en) * 1969-02-11 1972-04-04 Secr Defence Brit Pressure vessels
FR2284425A1 (en) * 1974-07-05 1976-04-09 Maschf Augsburg Nuernberg Ag PROCESS FOR MANUFACTURING CONTAINERS IN COMPOSITE MATERIAL AND PRODUCTS OBTAINED BY THIS PROCESS
EP0252700A2 (en) * 1986-07-09 1988-01-13 TranTek Inc. Shuttle transfer system
GB2203092A (en) * 1987-04-03 1988-10-12 Kei Mori Casting
US4840764A (en) * 1988-10-12 1989-06-20 Cummins Richard F Controlled wall casting process
EP0577248A1 (en) * 1992-05-29 1994-01-05 Gencorp Inc. Method of making embossing rolls

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936854A1 (en) * 1979-09-12 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Coated reflector elements mfr. - by ultraviolet radiation crosslinking plastic through transparent mould top
DE4002773A1 (en) * 1990-01-31 1991-08-08 Clouth Gummiwerke Ag Elastomer-covered roller prodn. - by assembling inner cylinder and cured outer elastomer tube with end plates and filling intermediate space with plastics or rubber

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1170917A (en) * 1957-03-22 1959-01-20 Precision optical element molding process
US3654009A (en) * 1969-02-11 1972-04-04 Secr Defence Brit Pressure vessels
FR2284425A1 (en) * 1974-07-05 1976-04-09 Maschf Augsburg Nuernberg Ag PROCESS FOR MANUFACTURING CONTAINERS IN COMPOSITE MATERIAL AND PRODUCTS OBTAINED BY THIS PROCESS
EP0252700A2 (en) * 1986-07-09 1988-01-13 TranTek Inc. Shuttle transfer system
GB2203092A (en) * 1987-04-03 1988-10-12 Kei Mori Casting
US4840764A (en) * 1988-10-12 1989-06-20 Cummins Richard F Controlled wall casting process
EP0577248A1 (en) * 1992-05-29 1994-01-05 Gencorp Inc. Method of making embossing rolls

Also Published As

Publication number Publication date
EP0777570A1 (en) 1997-06-11
DE4429866A1 (en) 1996-04-11
WO1996005957A3 (en) 1996-07-18
JPH09510667A (en) 1997-10-28

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