DE3835722A1 - Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles - Google Patents

Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles

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Publication number
DE3835722A1
DE3835722A1 DE19883835722 DE3835722A DE3835722A1 DE 3835722 A1 DE3835722 A1 DE 3835722A1 DE 19883835722 DE19883835722 DE 19883835722 DE 3835722 A DE3835722 A DE 3835722A DE 3835722 A1 DE3835722 A1 DE 3835722A1
Authority
DE
Germany
Prior art keywords
ear
double die
plastic
temple
metal
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
Application number
DE19883835722
Other languages
German (de)
Inventor
Kurt Schuler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niggel & Schuler
Original Assignee
Niggel & Schuler
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 Niggel & Schuler filed Critical Niggel & Schuler
Priority to DE19883835722 priority Critical patent/DE3835722A1/en
Publication of DE3835722A1 publication Critical patent/DE3835722A1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/36Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/42Moulds for making articles of definite length, i.e. discrete articles for undercut articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02Bending or folding
    • B29C53/04Bending or folding of plates or sheets
    • B29C53/06Forming folding lines by pressing or scoring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00Producing frames
    • B29D12/02Spectacle frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/0033Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057Moulding single grooves or ribs, e.g. tear lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2012/00Frames
    • B29L2012/005Spectacle frames

Abstract

The invention relates to a process and apparatus for producing plastic ear-piece ends and to plastic ear-piece ends for metal spectacles. The process starts with a basic plate of compact or laminated form, which is heated, placed into a double die and on both sides receives, as a prestamping, a groove in the basic shape of the unbent ear-piece end, in which prestamped form in the double die a heated needle corresponding to the later metal ear-piece end is fired in and, after increasing the pressure for final stamping, the needle is withdrawn again, forming an insertion channel, and after removal of the basic plate stamped in this way in the double die, the basic shape of the spectacles ear-piece end is milled out along the groove stamping and, before fitting onto the metal ear-piece end, is abrasively polished in a tumbling barrel. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und Vorrichtung zur Fertigung von Kunststoffbügelenden und Kunststoff­ bügelende für Metallbrillen.The invention relates to a method and device for the production of plastic temple ends and plastic temple end for metal glasses.

Es ist bekannt Kunststoffbügelenden aus Polyamid (PVC) durch Einbringen von verflüssigtem Granulat in Spritz­ formen herzustellen. Hierbei lassen Sich durchsichti­ ge oder unifarbene Bügelenden erzeugen. Die Fertigung aus edlerem Material, wie Acetat ist bisher nur durch Ausfräsen aus dem vollen Material mit Anbringung der seitlichen Rundungen mit Endverbreiterung und -Abflachung sowie Bohren des Einsteckkanals für das Me­ tallbügelende möglich; eine aufwendige und teuere Herstellungsweise, die überdies nur für unifarbenes Material verwendbar ist und bei durchsichtigem Material die Bohrriefen erkennen läßt.It is known plastic temple ends made of polyamide (PVC) by introducing liquefied granules into spray shapes to manufacture. Here can be seen produce ge or plain colored temple ends. Manufacturing Made of more noble material, such as acetate, is only possible through Milling from the full material with attachment of the side curves with widening and - Flattening and drilling of the insertion channel for the me tall iron end possible; an elaborate and expensive Production method, moreover, only for plain-colored Material is usable and with transparent material reveals the drill marks.

Es ist nun Aufgabe der Erfindung Kunststoffbügelenden aus Acetat für Metallbrillen in rationeller Weise ne­ ben Uni-Material auch aus meliertem und getigertem wie auch durchsichtigem Material zu fertigen.It is now an object of the invention plastic temple ends from acetate for metal glasses in a rational way ne ben plain material also made of mottled and tabby like also to manufacture transparent material.

Zur Lösung dieser Aufgabe kennzeichnet sich das Verfah­ ren zur Fertigung von Kunststoffbügelenden aus Acetat ausgehend von einer Grundplatine, dadurch, daß diese in kompakter oder geschichteter Form erwärmt in ein Doppelgesenk eingelegt und beidseits als Vorprägung eine Rillung in der Grundform des ungebogenen Bügelendes erhält, in welcher vorgeprägten Form im Doppelgesenk eine erhitzte Nadel entsprechend dem späteren Metallbügelende eingeschossen und nach Druckerhöhung zur Fertigprä­ gung die Nadel unter Bildung eines Steckkanals wieder herausgezogen wird und nach Entnahme der so geprägten Grundplatine in dem Doppelgesenk die Grundform des Brillenbügelendes entlang der Rillenprägung ausgefräst und vor dem Aufstecken auf das Metallbügelende im Schüttelfass schleifpoliert wird.The procedure is characterized in order to solve this task Ren for the production of plastic temple ends from acetate starting from a motherboard, in that this in a compact or layered form heated in a Double die inserted and an embossing on both sides  Grooving in the basic shape of the unbent temple end receives, in which pre-shaped form in the double die a heated needle corresponding to the later metal bracket end shot and after pressure increase to the final the needle again to form a plug-in channel is pulled out and after removal of the so embossed Motherboard in the double die the basic shape of the End of the temple milled out along the groove embossing and before attaching to the metal bracket end in Shake barrel is polished.

Die Vorrichtung zur Fertigung von Kunststoffbügelen­ den aus Acetat nach dem erfindungsgemäßen Verfahren kennzeichnet sich dadurch, daß das Doppel­ gesenk aus einem oder zwei gegenläufigen Stempeln be­ steht, in deren Längsrichtung die obere bzw. untere Wölbform eines ungebogenen Bügelendes eingebracht ist, von der über eine Rundkante im spitzen Winkel zur Werkzeugquerschnitts-Symmetrieachse eine Erweiterung zum Abfließen des Preßmaterials auch beim Einbringen des Steckkanals in die Ränder der Grundplatine vorgesehen ist.The device for the production of plastic brackets from acetate according to the inventive method is characterized in that the double die from one or two counter-rotating dies stands in the longitudinal direction of the upper or lower An arched bow end is introduced, from over a round edge at an acute angle to Tool cross-section symmetry axis an extension to drain the press material even when inserting of the plug-in channel provided in the edges of the motherboard is.

In der Zeichnung ist die Verfahrensweise zur erfindungs­ gemäßen Fertigung von Kunststoffbügelenden und eine Vorrichtung hierzu sowie ein fertiges Bügelende dar­ gestellt und zwar zeigen: In the drawing, the procedure for fiction according production of plastic temple ends and a Device for this as well as a finished temple end and show:  

Fig. 1 bis 3 die Seitenansicht einer Grundplatine in kompakter, ein-, zwei- oder dreischichti­ ger Form, Figs. 1 to 3 is a side view of a motherboard in a compact, mono-, di- or dreischichti ger shape,

Fig. 4 die Draufsicht hier bei getigerter Deckschicht der Grundplatine, Fig. 4 is a plan view here at tabby top layer of the base board,

Fig. 5 den Querschnitt durch das Doppelgesenk als gegeneinanderlaufende Stempel, Fig. 5 shows the cross section through the Doppelgesenk as contra-punches,

Fig. 6 und 7 die Draufsicht und den Querschnitt auf die Grundplatine nach der Prägung bei wieder ausgezogener Nadel, FIGS. 6 and 7, the top view and the cross-section on the motherboard after the embossing in the needle-extended again,

Fig. 8 und 9 die Draufsicht auf das ausgefräste und polierte Brillenbügelende vor und nach dem Ein­ bringen des Metallbügelendes. Fig. 8 and 9, the top view of the milled and polished temple end before and after the A bring the metal strap end.

Aus Fig. 1 bis 3 sind in Seitenansicht eine Grundplati­ ne 1 in kompakter Form in Fig. 2 mit Deckschicht 2 und in Fig. 3 mit beidseitiger Deckschicht 3 als Ausgangs­ material dargestellt, während Fig. 4 die Draufsicht auf eine Grundplatine mit getigerter Deckschicht 4 zeigt. Solche Grundplatinen 1 werden in erwärmter Form in ein Doppelgesenk eingelegt.From Fig. 1 to 3, a Grundplati are in side view ne 1 in a compact form in FIG. 2 with the covering layer 2 and in Fig. 3 with double-sided coating layer 3 as the starting material, while Fig. 4 shows the top view of a motherboard with tabby cover layer 4 shows. Such motherboards 1 are inserted in a heated mold in a double die.

In Fig. 5 ist sodann der Querschnitt durch das Doppel­ gesenk mit zwei gegeneinanderlaufenden Stempeln 5 dar­ gestellt, in deren Längsrichtung die obere bzw. untere Wölbform 6 eines ungebogenen Bügelendes eingebracht ist, von der (6) jeweils über eine Rundkante 7 im spitzen Winkel von 20° zur Werkzeugquerschnitts-Symmetrieachse A-A eine Erweiterung 8 zum Abfließen des Preßmaterials auch beim Einbringen des Steckkanals 9 in die Ränder 10 der Grundplatine 1 vorgesehen ist.In Fig. 5 then the cross section through the double die with two counter-running punches 5 is provided, in the longitudinal direction of which the upper or lower arch shape 6 of an unbent temple end is introduced, of which ( 6 ) each have a round edge 7 at an acute angle of 20 ° to the tool cross-section axis of symmetry AA, an extension 8 for draining the pressed material is also provided when inserting the plug-in channel 9 into the edges 10 of the motherboard 1 .

Im Doppelgesenk mit einem oder beiden gegenläufigen Stempeln 5 wird nach dem Einbringen der erwärmten Grundplatine 1 in kompakter, geschichteter und/oder getigerter od. dgl. Form beidseits als Vorprägung eine Rillung 11 in Form des ungebogenen Brillenbügelendes 12 und sodann eine erhitzte Nadel entspr. dem späteren Metallbügel 13 mit Ende 14 eingeschossen und damit der Steckkanal 9 im Doppelgesenk eingebracht. Beim Fertigprägen werden die Rillen 11 sodann vertieft und das überflüssige Deckmaterial läuft durch die Rundkan­ te 7 in den Randbereich 10, so daß die Fertigform des Bügelendes 12 nahezu erreicht ist. Nach Entnahme vom Doppelgesenk mit den beiden Stempeln 5 wird aus der Grundplatine 1 entlang der Rillung 11 das ungeboge­ ne Brillenbügelende 12 ausgefräst und nach dem Ein­ bringen des Metallbügel 13 mit Steckende 14 in die Endform 15 gebogen. Hierbei lassen sich neben runden Metallbügelenden auch eckige einbringen bei entspr. Querschnitt der eingeschossenen und wieder entnommenen Nadel; bei runden Metallbügelnenden wird in die Run­ dung eine Abflachung eingebracht, um eine Verdrehung des aufgesetzten Kunststoffbügelendes zu vermeiden.In the double die with one or both counter-rotating punches 5 , after the introduction of the heated base plate 1 in a compact, layered and / or tabby or the like form, a groove 11 in the form of the unbented temple end 12 and then a heated needle correspond to the embossing on both sides later metal bracket 13 shot at the end 14 and thus inserted the plug-in channel 9 in the double die. When finishing embossing, the grooves 11 are then deepened and the superfluous cover material runs through the Rundkan te 7 in the edge region 10 , so that the finished shape of the temple end 12 is almost reached. After removal of the double die with the two stamps 5 , the unbent ne temple end 12 is milled from the motherboard 1 along the groove 11 and after the metal bracket 13 with a plug end 14 is brought into the final shape 15 . In addition to round metal temple ends, angular ones can also be introduced with the corresponding cross-section of the inserted and removed needle; In the case of round metal temple ends, a flattening is made in the run, in order to avoid twisting of the attached plastic temple end.

Claims (3)

1. Verfahren zur Fertigung von Kunststoffbügelenden aus Acetat ausgehend von einer Grundplatine, dadurch gekennzeichnet, daß diese in kompakter oder geschichteter Form erwärmt in ein Doppelgesenk eingelegt und beidseits als Vorprägung eine Rillung in der Grund­ form des ungebogenen Bügelendes erhält, in welcher vor­ geprägten Form im Doppelgesenk eine erhitzte Nadel ent­ sprechend dem späteren Metallbügelende eingeschossen und nach Druckerhöhung zur Fertigprägung die Nadel un­ ter Bildung eines Steckkanals wieder herausgezogen wird und nach Entnahme der so geprägten Grundplatine in dem Doppelgesenk die Grundform des Brillenbügelendes ent­ lang der Rillenprägung ausgefräst und vor dem Auf­ stecken auf das Metallbügelende im Schüttelfaß schleif­ poliert wird. 1. A process for the production of plastic temple ends from acetate starting from a motherboard, characterized in that it is heated in a compact or layered form, inserted in a double die and, on both sides, as a knockout, receives a groove in the basic shape of the unbent temple end, in which pre-embossed shape in Double die, a heated needle is shot in accordance with the later metal temple end and after increasing the pressure for final embossing, the needle is pulled out again to form a plug-in channel and after removal of the base plate thus embossed in the double die, the basic shape of the temple end is milled out along the groove embossing and before being attached the metal bracket end is polished in the shaker barrel. 2. Vorrichtung zur Fertigung von Kunststoffbügelen­ den aus Acetat nach dem Verfahren von Anspruch 1, dadurch gekennzeichnet, daß das Doppelgesenk aus einem oder zwei gegenläufigen Stempeln besteht, in deren Längsrichtung die obere bzw. untere Wölb­ form eines ungebogenen Bügelendes eingebracht ist, von der über eine Rundkante im spitzen Winkel zur Werkzeugquerschnitts-Symmetrieachse eine Erweiterung zum Abfließen des Preßmaterials auch beim Einbringen des Steckkanals in die Ränder der Grundplatine vorge­ sehen ist.2. Device for the production of plastic brackets that of acetate by the process of claim 1, characterized in that the double die consists of one or two counter-rotating stamps, in the longitudinal direction the upper or lower arch form of an unbent temple end is introduced, from over a round edge at an acute angle to Tool cross-section symmetry axis an extension to drain the press material even when inserting of the plug-in channel in the edges of the motherboard see is. 3. Kunststoffbügelende aus Acetat hergestellt nach dem Verfahren von Anspruch 1, dadurch gekennzeichnet, daß bei Kompakt- oder Schichtform desselben an den Rändern zu den Seiten­ und Endrundungen das Außenmaterial herabgezogen und am verbreiterten Endauslauf vorzugsweise eine Material­ verdünnung durch Preßdruck bei eingebrachtem Steckka­ nal gebildet ist.3. Plastic temple end made of acetate according to the method of claim 1, characterized in that in compact or Layer shape of the same at the edges to the sides and finishes pulled the outer material down and on widened final outlet preferably a material dilution by pressure with inserted Steckka nal is formed.
DE19883835722 1988-10-20 1988-10-20 Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles Ceased DE3835722A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883835722 DE3835722A1 (en) 1988-10-20 1988-10-20 Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883835722 DE3835722A1 (en) 1988-10-20 1988-10-20 Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles

Publications (1)

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DE3835722A1 true DE3835722A1 (en) 1990-04-26

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DE19883835722 Ceased DE3835722A1 (en) 1988-10-20 1988-10-20 Process and apparatus for producing plastic ear-piece ends and plastic ear-piece ends for metal spectacles

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650820A1 (en) * 1993-09-10 1995-05-03 COBEPAL SàRL Method for making automatically spectacle frames in plastic, and device for its execution
CN101870173A (en) * 2010-06-24 2010-10-27 温州三杉光学有限公司 Plastic spectacle frame machining process

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808785C (en) * 1948-10-02 1951-07-19 Hermann Wolf G M B H Method and mold for the production of plastic moldings with inserts made of metal or the like, for example eyeglass hook brackets made of thermoplastics with a wire insert
GB1074013A (en) * 1963-06-26 1967-06-28 Celanese Corp Reinforced plastic laminate and method of producing the same
GB1133508A (en) * 1965-06-16 1968-11-13 Sergio Pozzi Method and apparatus for manufacturing spectacle sidebars and sidebars obtained thereby
DE1905293A1 (en) * 1969-02-04 1970-08-06 Dynamit Nobel Ag Process for the production of sheets from celluloid or cellulose acetate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE808785C (en) * 1948-10-02 1951-07-19 Hermann Wolf G M B H Method and mold for the production of plastic moldings with inserts made of metal or the like, for example eyeglass hook brackets made of thermoplastics with a wire insert
GB1074013A (en) * 1963-06-26 1967-06-28 Celanese Corp Reinforced plastic laminate and method of producing the same
GB1133508A (en) * 1965-06-16 1968-11-13 Sergio Pozzi Method and apparatus for manufacturing spectacle sidebars and sidebars obtained thereby
DE1905293A1 (en) * 1969-02-04 1970-08-06 Dynamit Nobel Ag Process for the production of sheets from celluloid or cellulose acetate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650820A1 (en) * 1993-09-10 1995-05-03 COBEPAL SàRL Method for making automatically spectacle frames in plastic, and device for its execution
CN101870173A (en) * 2010-06-24 2010-10-27 温州三杉光学有限公司 Plastic spectacle frame machining process
CN101870173B (en) * 2010-06-24 2012-11-28 温州三杉光学有限公司 Plastic spectacle frame machining process

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