DE1293174B

DE1293174B - Method for producing a sum type carrier

Info

Publication number: DE1293174B
Application number: DE1965O0010715
Authority: DE
Inventors: Ernst; Elsner Hans; Dr-Ing Hans-Otto; Sannemann Heinz
Original assignee: Olympia Werke AG
Current assignee: Olympia Werke AG
Priority date: 1965-03-16
Filing date: 1965-03-16
Publication date: 1969-04-24
Also published as: CH482547A; GB1144801A

Description

1 21 2

Die Erfindung bezieht sich auf ein Verfahren zum ■ Matrize mit der für den Typenträger erforderlichen Herstellen eines Summentypenträgers zum Abdruck Formgebung hergestellt ist, ist dadurch gekennzeichvon Zeichen. Im Gegensatz zu den normalen Typen- net, daß in dieser Matrize nach einem bekannten hebelschreibmaschinen sind bereits solche bekannt, Niederschlagsverfahren, insbesondere nach dem bebei denen ein Summentypenträger, der alle abzu- 5 kannten galvanoplastischen Verfahren, eine metaldruckenden Zeichen enthält, je nach dem gerade ab- lische Schicht niedergeschlagen wird, daß der Metallzudruckenden Zeichen gegenüber einer Druck- körper nach Erreichen einer ausreichenden Schichtposition in die erforderliche Auswahlposition bring- dicke aus der Matrize entfernt und der Metallkörper bar ist. Sobald das gewünschte Zeichen eingestellt ist, vor oder nach dem Entfernen aus der Matrize auf erfolgt der Abdruck. io der den Typen abgewandten Fläche mit einem Ver-The invention relates to a method for ■ die with the required for the type carrier Production of a sum type carrier for impression molding is produced is characterized by Sign. In contrast to the normal types, that in this matrix after a known Lever typewriters are already known to use precipitation methods, especially after the bebei which is one of the generic types, of all known electroplating processes, one that is metal-printing Contains characters, depending on which layer is being deposited, that of the metal to be printed Sign opposite a pressure body after reaching a sufficient layer position in the required selection position bring thickness removed from the die and the metal body is cash. Once the desired character is set, before or after removing it from the die the imprint takes place. io the area facing away from the types with a

Derartige Summentypenträger müssen zum Er- Stärkungsmaterial hinterlegt wird, reichen einer hohen Einstellgeschwindigkeit eine ge- Dieses Verfahren hat den Vorteil, daß eine prakringe Masse haben. Um dies zu erreichen, ist bereits tisch beliebig große Schichtstärke des Metallkörpers ein Verfahren zum Herstellen eines kugelförmigen angewendet werden kann, ohne das hierbei die selbst-Summentypenträgers bekannt, bei dem der Typen- 15 verständlich ebenfalls auftretenden Schichtstärkenträger mit erhabenen Typen zunächst aus Kunststoff Schwankungen für die Genauigkeit der so hergestellin einem Stück gespritzt wird. Um eine größere Ober- ten Typen nachteilig sind. Die äußere Form der flächenhärte für die einzelnen Typen des Typenträ- metallischen Oberfläche des so hergestellten Summengers zu erreichen, wird die gesamte äußere Oberfläche typenträgers wird allein durch die Matrize bestimmt, des Typenträgers anschließend mit einer Nickel- 20 während die Verzerrungen durch Schichtstärkenschicht überzogen. Die große erforderliche Genauig- Schwankungen auf der den Typen abgewandten Seite keit der einzelnen Typen auf dem Typenträger ist bei auftreten, hier aber nicht stören. Dadurch, daß bediesem Verfahren jedoch von einer gleichmäßigen liebig starke metallische Schichten hergestellt werden Schichtdicke abhängig. Erfolgt der Überzug zum Bei- können, erhöht sich die Standzeit der so hergestellten spiel auf galvanischem Wege, so ist die Stärke der 25 Typenträger erheblich.Such sum type carriers must be deposited with the reinforcement material, If a high setting speed is sufficient, this method has the advantage that a prakringe Have mass. In order to achieve this, the layer thickness of the metal body is already as large as desired a method for producing a spherical can be used without the self-sum type carrier known, in the case of the type 15 understandably also occurring layer thickness carrier with raised types initially made of plastic fluctuations for the accuracy of the so manufactured is injected into one piece. To a larger top types are disadvantageous. The external shape of the surface hardness for the individual types of the type carrier metallic surface of the sumger produced in this way to achieve, the entire outer surface is type-carrier is determined solely by the die, the type carrier then with a nickel 20 during the distortion through layer thickness layer overdrawn. The large accuracy fluctuations required on the side facing away from the types The ability of the individual types on the type carrier occurs, but does not interfere here. By the fact that this Process, however, can be produced from a uniform arbitrarily strong metallic layers Dependent on layer thickness. If the coating is applied to be able to, the service life of the manufactured in this way increases play by galvanic means, the strength of the 25 type carriers is considerable.

aufgetragenen Schicht an den Kanten der Typen- Das erfindungsgemäße Verfahren eignet sich sobegrenzungsflächen nicht konstant, weil sich in den wohl zur Herstellung von bandförmigen Summen-Winkeln und an den Kanten verschiedene Strom- typenträgern, die zur Einstellung der einzelnen Typen dichten und damit verschieden starke Ablagerungen im Betrieb zwischen zwei Rollen bewegt und dabei ergeben. Obwohl die zuerst hergestellte Kunststoff- 30 elastisch verformt werden, als auch für formsteife kugel noch ein genaues Abbild der herzustellenden Summentypenträger, z. B. in Kugelform, die drehbar Typen auf dem Typenträger hat, werden diese Typen gelagert und in jede beliebige Druckposition einstelldurch ungleiche Schichtstärken verzerrt. Dies hat bar sind. Im ersten Fall wird der Metallkörper mit dazu geführt, daß man die Schichtstärke der auf- einem biegungselastischen Material, z.B. Kunststoff gebrachten Metallschicht möglichst gering gehalten 35 oder einer Metallschicht, die galvanisch niederhat, um möglichst geringe Verzerrungen zu erreichen. geschlagen werden kann, hinterlegt. Vorzugsweise Würde man die Schichtstärke größer machen, so werden die Hohlräume, hinter den Typen des Metallträten größere Verzerrungen auf, die zu einem un- körpers vor dem Hinterlegen mit Verstärkungsgleichmäßigen Schriftbild führen würden. Dadurch material durch, ein Füllmaterial aufgefüllt, um ein aber, daß die Schichtstärke gering gehalten wird, 40 Durchknicken der Typen beim Anschlag zavermeihaben die nach diesem Verfahren hergestellten den. Im Falle eines formsteifen Summentypenträgers Typenkugeln wegen der Abnutzung der Metallschicht wird die den Typen abgewandte Fläche des Metallnur eine begrenzte Lebensdauer. Sobald nämlich die körpers mit einem formschönen Kunststoff hinterlegt, aufgebrachte Metallschicht abgenutzt ist, erfolgt eine. und zwar vorzugsweise durch Hinterspritzen mit stärkere Abnutzung der darunterliegenden Kunststoff- 45 einem thermoplastischen oder durch Ausgießen mit Schicht. Dies hat wiederum zur Folge, daß die seit- einem härtbaren Kunststoff unter Verwendung einer lieh stehenbleibenden, metallischen Kanten der in den Innenraum des Metallkörpers eingesetzten Typen über das Kunststoffmaterial hinausstehen und Innenform, beim Schreiben Löcher in das Papier stanzen. ■ Die Erfindung \vird nachfolgend an Hand vonapplied layer on the edges of the types- The method according to the invention is suitable for such boundary surfaces not constant, because they are probably used to produce ribbon-shaped cumulative angles and various current type carriers on the edges, which are used to set the individual types dense and thus differently strong deposits are moved between two rollers during operation and in the process result. Although the first made plastic 30 are elastically deformed, as well as for dimensionally stable ball still an exact image of the sum type carrier to be produced, z. B. in spherical shape that can be rotated Types on the type carrier, these types are stored and can be adjusted in any printing position uneven layer thicknesses distorted. This has to be cash. In the first case, the metal body is with led to the fact that the layer thickness of a flexurally elastic material, e.g. plastic applied metal layer kept as low as possible 35 or a metal layer that has been galvanically deposited, in order to achieve the lowest possible distortion. can be beaten, deposited. Preferably If one were to make the layer thicker, the cavities would be behind the types of metal treads larger distortions leading to an immaterial before being deposited with gain uniform Typeface would lead. Thereby material through, a filler material padded to a but that the layer thickness is kept low, the types have to avoid buckling at the attack the produced by this process the. In the case of a dimensionally stable total type carrier Type balls because of the wear and tear of the metal layer, the surface of the metal turned away from the types becomes only a limited life. As soon as the body is deposited with a shapely plastic, applied metal layer is worn out, a. and preferably by back injection with greater wear of the underlying plastic 45 a thermoplastic or by pouring with Layer. This, in turn, has the consequence that the plastic, which can be hardened using a lent permanent, metallic edges of the inserted into the interior of the metal body Types protrude beyond the plastic material and internal shape, punch holes in the paper while writing. The invention is shown below with reference to

Außerdem ist es noch bekannt, Druckplatten, und 50 mehreren Ausführungsbeispielen näher erläutert. InIt is also known, printing plates, and 50 several exemplary embodiments explained in more detail. In

Druckstöcke nach dem galvanoplastischen.Verfahren den Zeichnungen zeigtPrinting blocks after the galvanoplastischen.Verfahren the drawings shows

herzustellen. Zur Herstellung von derartigen Platten Fig. 1 die schaubildliche Ansicht des Metall-to manufacture. For the production of such plates Fig. 1 is the diagrammatic view of the metal

mit erhabenen Typen wird zunächst eine Matrize her- körpers eines bandförmigen Summentypenträgers,With raised types, a matrix is first of all made of a band-shaped sum type carrier,

gestellt, die die. herzustellenden Typen als Vertiefun- - F i g. 2 einen Schnitt durch den Summentypen-put that the. types to be produced as a deepening - F i g. 2 a section through the sum type

gen enthält. Danach wird die Matrize mit einer 55 träger nach Fig. 1,gen contains. Then the die with a 55 carrier according to Fig. 1,

Trennschicht überzogen, und danach wird eine Fig. 3 einen Schnitt durch einen mit KunststoffSeparating layer coated, and then a Fig. 3 is a section through one with plastic

Metallschicht der erforderlichen Stärke galvanisch hinterlegten Summentypenträger in der Art nachMetal layer of the required thickness galvanically deposited sum type carrier in accordance with the type

niedergeschlagen. Beim Trennen der niedergeschlage- Fig. 1,dejected. When separating the dejected- Fig. 1,

nen Schicht von der Matrize sind die Typen mit sehr F i g. 4 einen-Schnitt durch einen mit Metall hintergroßer Genauigkeit abgebildet. 60 legten Summentypenträger,In the first layer of the die, the types with very F i g. 4 a section through a rear-sized one with metal Accuracy mapped. 60 put total type carriers,

Der Erfindung.liegt die Aufgabe zugrunde, einen Fig. 5 einen Schnitt durch den Metallkörper nachThe invention is based on the object of FIG. 5, a section through the metal body

Summentypenträger mit sehr geringer Masse zum Er- Fig. 1, bei dem die einzelnen Typen mit einem Füll-Sum type carrier with very low mass for Er- Fig. 1, in which the individual types with a filling

reichen hoher Einstellgeschwindigkeiten herzustellen, material ausgefüllt sind,are able to produce high setting speeds, are filled with material,

der gegenüber des bisher bekannten Summentypen- Fig. 6 einen Schnitt ähnlich wie Fig. 5, bei demthe opposite of the previously known Summentypen- Fig. 6 a section similar to Fig. 5, in which

trägem eine wesentliche größere Standzeit bei großer 65 jedoch der Metallkörper mit einer KunststoffschichtHowever, the metal body with a plastic layer lacks a significantly longer service life at a large 65

Genauigkeit der Typen gewährleistet. hinterlegt ist,Type accuracy guaranteed. is deposited,

Das erfindungsgemäße Verfahren zum Herstellen Fig. 7 die perspektivische Ansicht des Metalleines Summentypenträgers, bei dem zuerst eine körpers eines kugelförmigen Summentypenträgers,The method according to the invention for manufacturing Fig. 7 is a perspective view of the metal line Sum type carrier, in which first a body of a spherical sum type carrier,

Claims

3 43 4

F i g. 8 shows a section through part of a die when it is clamped between two deflection rollers,

for producing the metal body according to FIG. 1, one of which to select each character

F i g. 9 a section through part of a driven is required. As the layer die to produce the metal body after strength when electroplating the second layer ^ F i g. 7. 5 is practically the same in all places, form behind

To produce the in F i g. 1 shown metal the cavities of the types 1 of course body 4 for a sum type carrier in strip form again cavities. In order to increase the stability of types 1 or to produce the metal shown in FIG. 7 against breaking when it hits the paper in the case of the body 14 for a spherical sum type writing, according to FIG. 5 in front of the carrier, a die is first produced, in whose io the electroplating of the second layer 5, the inner circumferential surface depressions corresponding to the types 1 on the rear side are incorporated by a filler material 6 types to be produced. F i g. 8 filled up. In this way, behind the shows a section through a die part 20 for manufacturing type 1 no cavities and the filling material 6 position of the metal body 4 (not shown) attached,
incorporated depressions according to the course, it is also possible, as shown in FIG. 6 delivery types. F i g. 9, on the other hand, shows a shows the entire metal body (FIG. 7) after the cavities behind the die part 30 have been filled for the production of the metal body 14 type 1 with filler material 6. In the inner circumferential surface 34, recesses are to be backed with a plastic layer 10. gen 35 in accordance with the types to be produced, such as. The overall matrix is composed of several elements, which are then back-fed with plastic material 9 or lines 30, the best way of assembling 10 is by rolling on thermoplastic material on the abutment surfaces 31. Item 32 plastic.

merely indicates a cut surface in order to make the indentations in FIG. 7 metal body 14 shown is for

gen better to show. 25 thought of a spherical sum type carrier that

The in F i g. 1 in a diagrammatic view and in itself, in contrast to the ribbon-shaped sum F i g. 2 metal body 4 shown in section consists of type carrier, is dimensionally stable. The raised types 11 a carrier body 2 with raised types 1. In addition, the metal body 14 correspond exactly to the Verdem clock markings 3 are still provided. For depressions 35 in the inner lateral surface 34 of the The type tape 4 is produced in the matrix composed of 3 ° several parts 30 several parts 20 assembled matrix to- (see Fig. 9). They form one with the carrier body 12 next a separating layer on the inner surface of the unit. After the metal body 14 by down-24 applied. Then the die is punched into an electroplating, in particular by electroplating trolytic bath is set, and a metal deposit is created in the die an adequate one layer galvanically deposited. When this has reached a layer thickness of 35, it is removed from the die Impact process is already separated as a galvanoplastic and then with a reinforcement process known; However, it is also possible to deposit material. After that, the total type is different To choose precipitation method. As soon as the carrier is rigid in itself due to the reinforcement Sufficient layer thickness is achieved, the material and has a good surface hardness and entire metal body 4 removed from the die and with 4 ° accuracy through the metal produced first now the in F i g. 1 shape shown. body 14.

The raised types 1 have exactly the contours. The backing is done with reinforcement material of the recesses incorporated in the die, preferably without being in the interior of the that fluctuations in layer thickness are used on the metal body 14 and an inner shape Accuracy of the manufactured types 1 affect 45 cavity between the inner mold and the inner can. Only the edges and corners of the surface of the metal body 14 with a thermoplastic opposite Side lying surface of the see plastic back-molded or with a hardened metal body 4 have rounding and barring plastic is poured. The back strains on, however, the accuracy of the inject or the pouring can either after Do not disturb types 1. 50 removing the metal body from the die

The metal body 4 preferably consists of one or takes place therefrom before removal.

Cobalt-nickel alloy and has a strength of The manufacturing process described thus leads to

about 0.1mm. Because of this low strength, it has a cumulative type carrier, its types 1 and 11

Of course, metal body 4 is only very small in terms of its surface and accuracy

rings strength. For this reason, the accuracy of the die parts 20 and 30, respectively, is required

lent to hang it on the back with a reinforcing recess. It can be a

backing material. metal layer of practically any thickness

F i g. 3 shows, in section, a backing of the be beaten without the resulting

Metal body 4 with a plastic layer 9. The edge and corner distortions here are disadvantageous

at the same time, the depressions 7 on the 60 will affect the accuracy. The mechanical

Type 1 back filled in. Strength of the sum type carrier is both at

F i g. 4, on the other hand, shows a section through an elastically deformable as well as dimensionally stable

galvanic path with a metal layer 5 behind- sum type carrier through the reinforcement material

lined part of the metal body. That to the rear.

The material used for lining is preferably softer the first deposited material of the metal body 4. In this way, the band-shaped 1. Method for producing a sum-sum type carrier easier to deform elastically, such as type carrier for imprinting characters, which ever

after the character to be printed, e.g. B. in a typewriter, opposite a printing position can be brought into the required selection position, first a die with the the shape required for the type carrier is produced, characterized in that that in this die after a known precipitation process, in particular a metallic layer is deposited according to the known electroforming process is that after reaching a sufficient layer thickness of the metal body produced in this way is removed from the die and that the metal body is made before or after removal of the die backed with a reinforcement material on the surface facing away from the types will.

2. The method according to claim 1, characterized in that the facing away from the types Surface of the metal body is deposited with a dimensionally stable ao plastic.

3. The method according to claim 2, characterized in that the depositing by back injection molding with a thermoplastic or by pouring with a curable plastic underneath Use of an internal mold inserted into the interior of the metal body takes place.

4. The method according to claim 1, characterized in that the metal body with a flexurally elastic material, e.g. B. plastic, is deposited.

5. The method according to claim 1, characterized in that the metal body is galvanically is deposited with a metal layer, the material of which is softer than that of the first deposited Metal layer is.

6. The method according to one or more of the preceding claims, characterized in that that the cavities behind the types of metal body before backing with reinforcing material be filled in with a filler material.

1 sheet of drawings