EP0160809B1 - Type carrier disc - Google Patents

Type carrier disc Download PDF

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Publication number
EP0160809B1
EP0160809B1 EP85102725A EP85102725A EP0160809B1 EP 0160809 B1 EP0160809 B1 EP 0160809B1 EP 85102725 A EP85102725 A EP 85102725A EP 85102725 A EP85102725 A EP 85102725A EP 0160809 B1 EP0160809 B1 EP 0160809B1
Authority
EP
European Patent Office
Prior art keywords
spokes
slots
type wheel
resilient
mass
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.)
Expired
Application number
EP85102725A
Other languages
German (de)
French (fr)
Other versions
EP0160809A2 (en
EP0160809A3 (en
Inventor
Dieter Prinzwald
Herbert Budde
Johann Heusel
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.)
AEG Olympia Office GmbH
Original Assignee
AEG Olympia AG
AEG Olympia Office GmbH
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 AEG Olympia AG, AEG Olympia Office GmbH filed Critical AEG Olympia AG
Publication of EP0160809A2 publication Critical patent/EP0160809A2/en
Publication of EP0160809A3 publication Critical patent/EP0160809A3/en
Application granted granted Critical
Publication of EP0160809B1 publication Critical patent/EP0160809B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/24—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being perpendicular to the axis of rotation
    • B41J1/28—Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers
    • B41J1/30—Carriers stationary for impression, e.g. with the types or dies not moving relative to the carriers with the types or dies moving relative to the carriers or mounted on flexible carriers

Definitions

  • the invention relates to a type disc with slots separated from each other at their free ends carrying spokes of the type specified in the preamble of claim 1.
  • Printing devices with a continuously rotating disc which has a plurality of flexible types supporting segments and with a hammer, which causes contact between individual types and a document on a printing roller, are very well known in printing technology.
  • the spokes carrying the types are flexible in the direction of impact and rather stiff in the direction of rotation.
  • the stiffness in the direction of rotation is necessary above all to maintain the pressure point correctly, but also as protection when stopping the pressure disc.
  • a certain amount of yielding in the direction of movement is also appropriate at the time of the attack.
  • the vibrations of the spokes that cannot be avoided in the plane of movement of the type disk lead to fatigue in the material of the spokes carrying the types and to breakage.
  • the invention has for its object to design a type plate according to the preamble of claim 1 so that the risk of breakage can be counteracted with the simplest and suitable for mass production cheap means. This object is achieved by the invention characterized in claim 1.
  • the type plate according to the invention has the advantage that the damping means counteracting the risk of breakage can be cheaply attached to the type plate by automatic machines.
  • B. Glue can be introduced into the slots between the spokes by a metering machine in the form of drops.
  • FIG. 1 shows a type plate 1 with a hub 2, from which spokes 3 extend radially outwards. These spokes 3 have types 4 at their free ends and are separated from one another by slots 5. The individual slots 5 are each rounded off at their base on the hub 2. Types 4 can be acted upon by a printing hammer (not shown) in order to produce an impression.
  • the type plate 1 has in its hub 2 a receiving bore 6, by means of which the type plate 1 can be plugged onto a drive shaft in the printing unit.
  • the adjacent spokes 3 are connected to one another by an elastic mass 7 filling the slots 5 in a partial area.
  • This mass 7 can be made much more elastic than the material of the spokes 3, which must be made of a harder material for reasons of stability and to produce a clean typeface. As a result, very good damping of the spokes 3 can be achieved, which also counteracts the risk of breakage very well.
  • the elastic mass 7 can be made of an elastic plastic or of an elastic adhesive, such as. B. Kövulfix from Chemische Fabrik KG Kömmerling. According to FIG.
  • the elastic mass 7 is only introduced into the radial slots 5 at the base of the radial slots 5 (5), which can advantageously be done by automatic metering devices.
  • the elastic mass 7 to be introduced into the slots 5 can also be connected to a circumferential ring 8.
  • the outlet nozzle of a metering device and the type plate 1 need only make one full revolution without stopping relative to one another while the elastic mass is being applied.
  • An automatic dosing device with an annular nozzle can also be used, as a result of which the ring 8 with the elastic masses 7 can be produced in one operation.
  • the outlet nozzle of the metering device is gradually brought in the direction of rotation in front of the individual slots between the spokes 3 and stopped.
  • a precisely metered amount of the elastic mass is expelled from the outlet nozzle of the metering device and introduced into the free space at the base of the individual slots. This can be done automatically and cheaply by the dosing device.
  • a separate nozzle for introducing the adhesive into the slots can be provided for each slot 5.
  • the type plates according to the invention have damping means which counteract rapid breakage and are easy and inexpensive to install and, regardless of the material of the spokes 3, consist of an elastic mass 7 which is very effective in terms of damping.

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  • Accessory Devices And Overall Control Thereof (AREA)

Description

Die Erfindung betrifft eine Typenscheibe mit durch Schlitze voneinander getrennten an ihren freien Enden Typen tragenden Speichen der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a type disc with slots separated from each other at their free ends carrying spokes of the type specified in the preamble of claim 1.

Druckeinrichtungen mit einer dauernd rotierenden Scheibe, die eine Vielzahl von flexiblen Typen tragenden Segmenten besitzt und mit einem Hammer, der die Berührung zwischen einzelnen Typen und einem Dokument auf einer Druckwalze verursacht, sind in der Drucktechnik sehr wohl bekannt. Normalerweise sind die die Typen tragenden Speichen flexibel in der Anschlagrichtung und eher steif in der Drehrichtung. Die Steifheit in der Drehrichtung ist vor allem zum richtigen Einhalten der Druckstelle, aber auch als Schutz beim Abstoppen der Druckscheibe notwendig. Um jedoch eine gute Druckqualität zu erzielen, ist im Zeitpunkt des Anschlages auch ein gewisses Nachgeben in der Bewegungsrichtung angebracht. Die in der Bewegungsebene der Typenscheibe nicht zu vermeidenden Schwingungen der Speichen führen zu einer Ermüdung im Material der die Typen tragenden Speichen und zum Bruch derselben.Printing devices with a continuously rotating disc, which has a plurality of flexible types supporting segments and with a hammer, which causes contact between individual types and a document on a printing roller, are very well known in printing technology. Typically, the spokes carrying the types are flexible in the direction of impact and rather stiff in the direction of rotation. The stiffness in the direction of rotation is necessary above all to maintain the pressure point correctly, but also as protection when stopping the pressure disc. However, in order to achieve good print quality, a certain amount of yielding in the direction of movement is also appropriate at the time of the attack. The vibrations of the spokes that cannot be avoided in the plane of movement of the type disk lead to fatigue in the material of the spokes carrying the types and to breakage.

Die obengenannten Nachteile werden bei durch die US-PS 4 074 798 offenbarten Typenscheiben dadurch vermieden, daß die die Typen tragenden Speichen durch einen Dämpfungsring aus gummielastischem Material miteinander verbunden sind. Dieser Dämpfungsring ist durch Kleben auf die Speichen aufgebracht, welche z. B. aus durch glasfaserverstärkten Kunststoffen bestehen. Eine derartige Ausbildung der Typenscheiben ist sehr aufwendig und teuer, da die Dämpfungsringe durch einen zusätzlichen Arbeitsgang mit den Speichen verbunden werden müssen.The above-mentioned disadvantages are avoided in the case of type plates disclosed by US Pat. No. 4,074,798 in that the spokes carrying the types are connected to one another by a damping ring made of rubber-elastic material. This damping ring is applied by gluing to the spokes, which, for. B. consist of glass fiber reinforced plastics. Such a design of the type plates is very complex and expensive, since the damping rings must be connected to the spokes by an additional operation.

Der Erfindung liegt die Aufgabe zugrunde, eine Typenscheibe nach dem Oberbegriff des Patentanspruchs 1 so auszubilden, daß der Bruchgefahr mit einfachsten und für die Massenfertigung geeigneten billigen Mitteln entgegengewirkt werden kann. Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichnete Erfindung gelöst.The invention has for its object to design a type plate according to the preamble of claim 1 so that the risk of breakage can be counteracted with the simplest and suitable for mass production cheap means. This object is achieved by the invention characterized in claim 1.

Die erfindungsgemäße Typenscheibe hat den Vorteil, daß die der Bruchgefahr entgegenwirkenden Dämpfungsmittel an der Typenscheibe durch Automaten billig angebracht werden können. Hierbei kann z. B. Klebstoff durch eine Dosiermaschine in Tropfenform in die Schlitze zwischen den Speichen eingebracht werden.The type plate according to the invention has the advantage that the damping means counteracting the risk of breakage can be cheaply attached to the type plate by automatic machines. Here, for. B. Glue can be introduced into the slots between the spokes by a metering machine in the form of drops.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen zu entnehmen. Die Erfindung wird anhand von Ausführungsbeispielen im folgenden beschrieben.Further advantageous refinements of the subject matter of the invention can be found in the further subclaims. The invention is described below using exemplary embodiments.

Es zeigt:

  • Figur 1 eine Draufsicht auf eine erste Typenscheibe,
  • Figur 2 eine Einzelheit aus Figur 1 in vergrößerter Darstellung und
  • Figur 3 eine Einzelheit einer Typenscheibe in abgewandelter Form.
It shows:
  • FIG. 1 shows a plan view of a first type plate,
  • Figure 2 shows a detail of Figure 1 in an enlarged view
  • Figure 3 shows a detail of a type plate in a modified form.

In der Figur 1 ist eine Typenscheibe 1 mit einer Nabe 2 dargestellt, von der sich strahlenförmig nach außen Speichen 3 erstrecken. Diese Speichen 3 tragen an ihren freien Enden Typen 4 und sind durch Schlitze 5 voneinander getrennt. Die einzelnen Schlitze 5 sind an ihrem Fußgrund an der Nabe 2 jeweils abgerundet. Die Typen 4 sind durch einen nicht dargestellten Druckhammer zur Erzeugung eines Abdrucks beaufschlagbar. Die Typenscheibe 1 weist in ihrer Nabe 2 eine Aufnahmebohrung 6 auf, mittels der die Typenscheibe 1 auf einer Antriebswelle in dem Druckwerk aufsteckbar ist.FIG. 1 shows a type plate 1 with a hub 2, from which spokes 3 extend radially outwards. These spokes 3 have types 4 at their free ends and are separated from one another by slots 5. The individual slots 5 are each rounded off at their base on the hub 2. Types 4 can be acted upon by a printing hammer (not shown) in order to produce an impression. The type plate 1 has in its hub 2 a receiving bore 6, by means of which the type plate 1 can be plugged onto a drive shaft in the printing unit.

Da die Speichen 3 mit den Typen 4 bei den Druckvorgängen an ihren Verbindungsstellen zu der Nabe 2 stark beansprucht werden, sind die benachbarten Speichen 3 durch eine die Schlitze 5 in einem Teilbereich ausfüllende elastische Masse 7 miteinander verbunden. Diese Masse 7 kann gegenüber dem Material der Speichen 3, das aus Stabilitätsgründen und zur Erzeugung eines sauberen Schriftbildes aus einem härteren Material bestehen muß, wesentlich elastischer ausgebildet sein. Hierdurch läßt sich daher eine sehr gute Dämpfung der Speichen 3 erzielen, wodurch einer Bruchgefahr ebenfalls sehr gut entgegengewirkt wird. Die elastische Masse 7 kann aus einem elastischen Kunststoff oder aus einem elastisch bleibenden Kleber, wie z. B. Kövulfix der Firma Chemische Fabrik KG Kömmerling bestehen. Die elastische Masse 7 wird gemäß Figur 2 nur am Fußgrund der radialen Schlitze 5 in diesen (5) eingebracht, was vorteilhaft durch Dosierautomaten erfolgen kann. Im Rahmen der Erfindung können die in die Schlitze 5 einzubringende elastische Masse 7 auch mit einem umlaufenden Ring 8 verbunden sein. In diesem Fall brauchen die Austrittsdüse einer Dosiervorrichtung und die Typenscheibe 1 während des Auftragens der elastischen Masse nur eine volle Umdrehung ohne Stopp relativ zueinander ausführen. Auch ist ein Dosierautomat mit einer Ringdüse einsetzbar, wodurch der Ring 8 mit den elastischen Massen 7 in einem Arbeitsgang erzeugbar ist.Since the spokes 3 with the types 4 are subjected to great stress during the printing processes at their connection points to the hub 2, the adjacent spokes 3 are connected to one another by an elastic mass 7 filling the slots 5 in a partial area. This mass 7 can be made much more elastic than the material of the spokes 3, which must be made of a harder material for reasons of stability and to produce a clean typeface. As a result, very good damping of the spokes 3 can be achieved, which also counteracts the risk of breakage very well. The elastic mass 7 can be made of an elastic plastic or of an elastic adhesive, such as. B. Kövulfix from Chemische Fabrik KG Kömmerling. According to FIG. 2, the elastic mass 7 is only introduced into the radial slots 5 at the base of the radial slots 5 (5), which can advantageously be done by automatic metering devices. In the context of the invention, the elastic mass 7 to be introduced into the slots 5 can also be connected to a circumferential ring 8. In this case, the outlet nozzle of a metering device and the type plate 1 need only make one full revolution without stopping relative to one another while the elastic mass is being applied. An automatic dosing device with an annular nozzle can also be used, as a result of which the ring 8 with the elastic masses 7 can be produced in one operation.

Um die Entstehung des oben genannten Ringes zu vermeiden, ist es erforderlich, daß die Austrittsdüse der Dosiervorrichtung schrittweise in Drehrichtung vor die einzelnen Schlitze zwischen den Speichen 3 gebracht und gestoppt wird. In jeder Stoppstellung der Typenscheibe 1 wird eine genau dosierte Menge der elastischen Masse aus der Austrittsdüse der Dosiereinrichtung ausgetrieben und in den freien Raum an dem Fußgrund der einzelnen Schlitze eingebracht. Dieses kann von der Dosiervorrichtung automatisch und billig ausgeführt werden. Ebenso kann für jeden Schlitz 5 eine gesonderte Düse zum Einbringen des Klebers in die Schlitze vorgesehen sein.In order to avoid the formation of the above-mentioned ring, it is necessary that the outlet nozzle of the metering device is gradually brought in the direction of rotation in front of the individual slots between the spokes 3 and stopped. In each stop position of the type disk 1, a precisely metered amount of the elastic mass is expelled from the outlet nozzle of the metering device and introduced into the free space at the base of the individual slots. This can be done automatically and cheaply by the dosing device. Likewise, a separate nozzle for introducing the adhesive into the slots can be provided for each slot 5.

Die erfindungsgemäßen Typenscheiben weisen einem schnellen Bruch entgegenwirkende Dämpfungsmittel auf, die leicht und billig anzubringen sind und unabhängig von dem Material der Speichen 3 aus einer in bezug auf die Dämpfung sehr wirkungsvollen elastischen Masse 7 bestehen.The type plates according to the invention have damping means which counteract rapid breakage and are easy and inexpensive to install and, regardless of the material of the spokes 3, consist of an elastic mass 7 which is very effective in terms of damping.

Claims (5)

1. A type wheel having spokes which extend outwards like rays from a hub and are separated from one another by slots and which carry types at their free ends, can be acted upon by a print hammer to strike the types against a recording medium and comprise damping means, particularly for damping the vibration of the spokes in the plane of the type wheel, characterised in that the adjacent spokes (3) are connected to one another by a mass (7) which fills in part of the slots (5) and is more resilient than the material of the spokes (3).
2. A type wheel according to Claim 1, characterised in that the resilient mass (7) fills in the region at the base of each of the radial slots (5).
3. A type wheel according to Claim 1 or 2, characterised in that the resilient mass (7) consists of plastics material.
4. A type wheel according to Claim 1 or 2, characterised in that the resilient mass (7) consists of a resilient adhesive.
5. A type wheel according to any one of the preceding Claims, characterised in that the resilient masses (7) filling in the slots (5) are connected to one another in the form of a ring.
EP85102725A 1984-05-05 1985-03-09 Type carrier disc Expired EP0160809B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416650 1984-05-05
DE19843416650 DE3416650A1 (en) 1984-05-05 1984-05-05 TYPE DISC

Publications (3)

Publication Number Publication Date
EP0160809A2 EP0160809A2 (en) 1985-11-13
EP0160809A3 EP0160809A3 (en) 1986-06-04
EP0160809B1 true EP0160809B1 (en) 1989-05-24

Family

ID=6235022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102725A Expired EP0160809B1 (en) 1984-05-05 1985-03-09 Type carrier disc

Country Status (4)

Country Link
US (1) US4668113A (en)
EP (1) EP0160809B1 (en)
JP (1) JPS6124454A (en)
DE (2) DE3416650A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720970C1 (en) * 1987-06-25 1988-06-01 Triumph Adler Ag Type wheel for typewriters or similar machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034366A1 (en) * 1969-03-25 1970-12-11 Ibm France Printing character support elements inter - acting with one or more impact elements
US3907091A (en) * 1972-06-02 1975-09-23 Ibm Type disc-interposer assembly for a printer
FR2186891A5 (en) * 1972-06-02 1974-01-11 Ibm
US3848722A (en) * 1973-05-21 1974-11-19 Ibm Print disc assembly for a printer
DE2440567A1 (en) * 1974-08-23 1976-03-04 Siemens Ag TYPE CARRIER DEVICE

Also Published As

Publication number Publication date
EP0160809A2 (en) 1985-11-13
JPS6124454A (en) 1986-02-03
US4668113A (en) 1987-05-26
DE3570395D1 (en) 1989-06-29
EP0160809A3 (en) 1986-06-04
DE3416650A1 (en) 1985-11-07

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