EP0048290B1 - Embase pour la réception de plusieurs éléments d'impression - Google Patents

Embase pour la réception de plusieurs éléments d'impression Download PDF

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Publication number
EP0048290B1
EP0048290B1 EP80105617A EP80105617A EP0048290B1 EP 0048290 B1 EP0048290 B1 EP 0048290B1 EP 80105617 A EP80105617 A EP 80105617A EP 80105617 A EP80105617 A EP 80105617A EP 0048290 B1 EP0048290 B1 EP 0048290B1
Authority
EP
European Patent Office
Prior art keywords
bank
frame
pressure
ram
units
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
EP80105617A
Other languages
German (de)
English (en)
Other versions
EP0048290A1 (fr
Inventor
Armin Bohg
Kurt Hartmann
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.)
IBM Deutschland GmbH
International Business Machines Corp
Original Assignee
IBM Deutschland GmbH
International Business Machines Corp
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 IBM Deutschland GmbH, International Business Machines Corp filed Critical IBM Deutschland GmbH
Priority to EP80105617A priority Critical patent/EP0048290B1/fr
Priority to DE8080105617T priority patent/DE3067861D1/de
Priority to US06/265,749 priority patent/US4388861A/en
Priority to JP56107151A priority patent/JPS5775876A/ja
Priority to BR8105782A priority patent/BR8105782A/pt
Publication of EP0048290A1 publication Critical patent/EP0048290A1/fr
Application granted granted Critical
Publication of EP0048290B1 publication Critical patent/EP0048290B1/fr
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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/02—Hammers; Arrangements thereof
    • B41J9/127—Mounting of hammers

Definitions

  • the invention relates to a bank for receiving a plurality of pressure ram units.
  • Pressure rams in this regard are described in German patent applications DE-A-2 926 276 and DE-A-3 018 407. They are especially intended for use in impact printers.
  • the print hammers are carried by leaf springs, the energy of which is stored in the deflected state and is used to actuate the print hammer.
  • the pressure hammer is triggered in an electromagnetic manner by switching off the excitation of an electromagnet which retains the pressure hammer.
  • Line printers with a large number of character positions have so-called print hammer banks. These print hammer banks are used to hold individual print hammer units, each of which is assigned to a specific printing position.
  • the pressure hammer bench described in German Patent 1,276,380 has a large number of special features: the pretensioned pressure hammers are held by an electromagnet common to all pressure hammers, the carrier of which, fixed on leaf springs and displaceable in parallel, executes a reciprocating movement directed perpendicular to the spelling, which the The print hammers are retrieved after the stop.
  • damper masses are provided for the individual pressure hammers, which absorb the energy of the pressure hammers moving back after the pressure stop and lock the pressure hammers by means of resilient locks until the magnetic yokes of the holding magnets have gripped the pressure hammers in this front extreme position.
  • damper masses are fastened on a rotatably mounted support which extends over all pressure points and which is offset downwards with its pivot point relative to the resilient locks and which briefly swings out by means of a cam mechanism to release the pressure hammers.
  • each print hammer assembly consists of a hinged armature solenoid, a separate print hammer, and a plunger to transfer the kinetic energy of the hinged armature to the print hammer.
  • Each electromagnet is screwed on with two screws on a base plate common to all pressure hammer units; these screws must be loosened for each flight time adjustment and then tightened again (264 pieces!).
  • Each electromagnet fully transmits the recoil pulse that occurs when the armature accelerates to the base plate. It is not possible to replace individual print hammer units.
  • Electromagnetic drive units as can be used in pressure ram units for the bench described below, are described in German patent application DE-A-3 018 407. From this application it can be seen that the actual electromagnetic drive unit is accommodated in the recess of a flat, narrow frame, and that the actual rod-like pressure ram is guided in two bores of this frame. Furthermore, it is stated that this plunger cooperates at its end remote from the pressure with a spring pin which is fastened on one side and runs in an elongated hole in the plunger. This spring pin is used to retrieve the pressure ram after a working stroke. Details for understanding the mode of operation of the electromagnetic pressure tappet drive unit are not to be repeated here, since they are not necessary for understanding the bank described below for accommodating a plurality of pressure tappet units.
  • FIG. 1 shows a perspective view of a bench for accommodating a plurality of pressure ram units.
  • the pressure tappet units are marked with 5 and 6, the frame with 5-1 and 6-1.
  • tappet units 5 and 6 are shown, although much more can be accommodated in bank 1.
  • a pressure tappet unit (see also FIG. 2) 6 consists of a flat, narrow frame 6-1.
  • the frame of each pressure tappet unit is provided with a recess 7, in which the actual electromagnetic drive unit for the pressure tappet (not shown) is arranged.
  • the plunger, not shown, is guided in the holes 10 and 11 of the frame 5-1 and 6-1.
  • Each frame 5 and 6 has a keel-like part at its front end and two frame legs 9-1 and 9-2 at its rear end.
  • the frame legs each have a V-shaped groove 9-1-1 and 9-2-1 at their rear end (see also FIG. 3).
  • On the upper frame leg 9-2 an angle piece 16 is attached by means of the screw 17, in which an adjusting screw 15 extends.
  • This set screw serves as a stop for a stop bar 13, which has a cutting edge bearing 14 in the lower frame leg 9-1 and extends from there through an elongated hole 12 in the upper frame leg 9-2 upwards. 2, the stop bar is held against the set screw end by a tension spring 27. From Fig. 2 it can also be seen how the already mentioned spring pin 23 interacts with the actual plunger 22. This spring pin 23 is connected to a tab 24 which is connected by means of the screw 25 on the upper frame part. When the electromagnetic drive unit (not shown) is energized, the plunger 22 is accelerated in the working direction D. After the printing process has been completed, it is returned to its starting position by the spring pin 23, in which it is pressed against the stop bar 13 by the force of the spring pin.
  • the bank 1 has a U-shaped shape.
  • the front U-leg 4 has to accommodate the keel-like front parts 5-2, 6-2 of the frame 5-1 and 6-1 vertically extending profile grooves 4-1, 4-2, which are adapted to the keel shape.
  • the rear U-leg 2 of the bench 1 consists of two sections: a straight leg part 2-1 and an upper inwardly angled leg part 2-2. This part 2-2 in turn has vertical profile grooves 2-2-1, 2-2-2 for receiving the individual tappet units 5 and 6. These profile grooves serve to receive a pin 19 which runs in the V-shaped grooves 9-1-1 of the lower and upper frame legs 9-1 and 9-2 of the frame 6-1. These latter profile grooves are aligned with one another.
  • FIG. 2 which shows a simplified side view (from arrow direction P, FIG. 1) of the bench with the pressure ram unit 6, it can be seen in particular how the frame leg of the frame 6-1 between the lower 9-1 and upper 9-2 arranged pin 19 rests in its central part in the rear profile groove of the bank.
  • This pin should have a resilient effect in the pressure direction D, so that the recoil which occurs when the pressure ram 22 is fired is transmitted to the bench 1 only in a damped manner. 2 that the pin 19 is accommodated with its upper part in a bore of the angle piece 16.
  • FIG. 3 shows an excerpted sectional view of the bench (with two pressure tappet units) along section line 3-3 in FIG. 2
  • FIG. 4 shows an excerpted sectional illustration of the bench (with two pressure tappet units) according to section line 4-4 in FIG 2 is reproduced.
  • FIG. 3 thus relates to the mounting and guidance of the rear parts of the pressure tappet units
  • FIG. 4 relates to the mounting and guidance of the front parts of the pressure tappet units.
  • V-shaped profile grooves in part 2-2 of leg 2 of bank 1 are marked 2-2-1 and 2-2-2. It can be seen that these profile grooves have a different depth and that the pins 19 of the frame run at the bottom of these profile grooves.
  • the V-shaped profile grooves 4-1, 4-2 have a different depth for adjacent frames.
  • the profile groove for frame 6-1 is marked with 4-2, that for frame 5-1 with 4-1.
  • These V-shaped grooves have a different depth, taking into account the frame offset. They are adapted to the keel-like front part 6-2, 5-2 of the frames 6-1 and 5-1, the groove width for the deeper grooves being somewhat wider than the actual frame width.
  • FIG. 5 shows a simplified illustration of a pull-out device for removing a pressure ram unit from the bank.
  • This device is a correspondingly handle-shaped bent wire 31 with angled ends, which in horizontal bores of the Elbow 29 or (30) can be inserted in the front frame part. In this way it is possible to remove the individual frame units from the bank 1 as required (with a corresponding loosening of the front or rear frame legs 2, 4) and to reinsert them into the bank.
  • Such Lokk réelle z. B. by partially loosening a screw connection, which serves to join the U-legs 4 and 2 of the bench with the base 3.

Landscapes

  • Impact Printers (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (5)

1. Embase pour la réception d'éléments d'impression contigus, constituée par un chassis plat et étroit qui comporte une unité d'entraînement électromagnétique de l'élément d'impression disposée dans une cavité dudit chassis, lequel élément d'impression est guidé dans deux trous dudit chassis, caractérisée en ce que ladite embase (1) destinée à recevoir et à guider lesdits éléments d'impression (5, 6) a une section en forme de fourche, ledit chassis (6-1) de chaque élément d'impression (5, 6) comporte à au moins une de ses deux extrémités une goupille (19) élastique disposée entre deux branches dudit chassis (9-1, 9-2), lesdits chassis sont disposés de façon amovible entre les branches de la fourche (2, 4) de l'embase (1) et les deux branches de la fourche comportent des cavités (4-1, 4-2; 2-2-1, 2-2-2) permettant la réception et le maintien par crantage et/ou par force respectivement de la partie avant ou arrière dudit chassis ou de ladite goupille (19).
2. Dispositif selon la revendication 1, caractérisé en ce que lesdites cavités (4-1, 4-2; 2-2-1, 2-2-2) ménagées dans les branches de ladite embase (1) afin de recevoir une unité d'entraînement d'un élément d'impression sont des rainures verticales.
3. Dispositif selon la revendication 2, caractérisé en ce que la partie avant dudit chassis a une forme de quille (6-2) et la partie arrière comporte une goupille (19) élastique.
4. Dispositif selon une des revendication 1 à 3, caractérisé en ce que des éléments d'impression contigus (5, 6) sont, dans la direction de fonctionnement, décalés les uns par rapport aux autres afin de réduire l'influence réciproque des unités électromagnétiques.
5. Dispositif selon la revendications 4, caractérisé en ce qu'il est utilisé dans des imprimantes à impact.
EP80105617A 1980-09-19 1980-09-19 Embase pour la réception de plusieurs éléments d'impression Expired EP0048290B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP80105617A EP0048290B1 (fr) 1980-09-19 1980-09-19 Embase pour la réception de plusieurs éléments d'impression
DE8080105617T DE3067861D1 (en) 1980-09-19 1980-09-19 Bank for the receipt of several print hammer units
US06/265,749 US4388861A (en) 1980-09-19 1981-05-21 Bank for accommodating several print hammer units
JP56107151A JPS5775876A (en) 1980-09-19 1981-07-10 Bank for housing ram-unit
BR8105782A BR8105782A (pt) 1980-09-19 1981-09-10 Banco para acomodacao de varias unidades de percussor de impressao

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80105617A EP0048290B1 (fr) 1980-09-19 1980-09-19 Embase pour la réception de plusieurs éléments d'impression

Publications (2)

Publication Number Publication Date
EP0048290A1 EP0048290A1 (fr) 1982-03-31
EP0048290B1 true EP0048290B1 (fr) 1984-05-16

Family

ID=8186801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105617A Expired EP0048290B1 (fr) 1980-09-19 1980-09-19 Embase pour la réception de plusieurs éléments d'impression

Country Status (5)

Country Link
US (1) US4388861A (fr)
EP (1) EP0048290B1 (fr)
JP (1) JPS5775876A (fr)
BR (1) BR8105782A (fr)
DE (1) DE3067861D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8721782A0 (it) * 1987-09-02 1987-09-02 Honeywell Bull Spa Smorzatore aerodinamico per attuatore di stampa.
US4867059A (en) * 1988-08-05 1989-09-19 International Business Machines Corporation Impact printer print mechanism and method of manufacture
JP4739587B2 (ja) * 2001-07-10 2011-08-03 Ｊｕｋｉ株式会社 ボタン付け用ミシン

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1453936A (fr) * 1964-07-25 1966-07-22 Ibm Unité de marteaux d'impression pour imprimeurs à grande vitesse
US3468246A (en) * 1967-01-06 1969-09-23 Int Computers & Tabulators Ltd Print hammers with electromagnetic actuating means

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349696A (en) * 1965-08-16 1967-10-31 Potter Instrument Co Inc Hammer module assembly in high speed printers
US3426675A (en) * 1967-03-17 1969-02-11 Mohawk Data Sciences Corp Print hammer module
DE1276120B (de) * 1967-05-12 1968-08-29 Siemens Ag Schaltungsanordnung fuer eine Anrufumleit-einrichtung in Fernmeldeanlagen, insbesondere Fernsprechnebenstellenanlagen
GB1201085A (en) * 1967-06-27 1970-08-05 Int Computers Ltd Hammer block assembly for line printer
US3593657A (en) * 1968-05-13 1971-07-20 Scm Corp Combined print hammer module and printed circuit board
US3636865A (en) * 1969-05-08 1972-01-25 Data Printer Corp Print head for high-speed printers
US3745497A (en) * 1971-08-11 1973-07-10 Datadyne Corp Printing mechanism actuator
US3811377A (en) * 1973-01-02 1974-05-21 Ibm Impact printer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1453936A (fr) * 1964-07-25 1966-07-22 Ibm Unité de marteaux d'impression pour imprimeurs à grande vitesse
US3468246A (en) * 1967-01-06 1969-09-23 Int Computers & Tabulators Ltd Print hammers with electromagnetic actuating means

Also Published As

Publication number Publication date
JPH0216222B2 (fr) 1990-04-16
BR8105782A (pt) 1982-05-25
EP0048290A1 (fr) 1982-03-31
US4388861A (en) 1983-06-21
JPS5775876A (en) 1982-05-12
DE3067861D1 (en) 1984-06-20

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