DE2034231C3 - Power-driven printing unit for typewriters and similar office machines - Google Patents

Description

4 Dnickwerk according to claim, characterized by the first Antnebereinnchtung cycle, and indicates that the driver edges (116, 40, the control gears at the beginning of the e ^ entchen 120) to the arms (46, 127) of the release pawl pressure cycle w.eder reset ^ ground ^ a (43, 129,141) are adjustable. new characters can then be entered again

^v ' ^J and are stored until the two An

Drive devices for a new print cycle 45 are released. In addition, the first arrival

drive device are designed to be low mass, what

favorably on the input speed and thus affects the writing frequency. Furthermore, the device according to the invention enables a very The invention relates to a power-driven 50 compact design.

Printing unit for typewriters and similar office machines The invention is described below in one embodiment

with a summation type carrier, which is explained in more detail using the summation guide example. It shows drives, the actuators of which are in the form of selection elements.

the particular position can be set, adjustable training object, i _{st 55} Fig. 2 is a section through the printing unit,

In such a known printing unit with FIG. 3 is a view of the printing unit from below

an electromechanical input device and with the first drive device, with drive devices acting at intervals. FIG. 4 shows a schematic arrangement for the

(USA.-Patent 3 302 765) are single-turn rotary setting of the sum type carrier, clutches released by selection members, 60 F i g. 5 shows a detail from F1 g. 2 and which by energizing individual selection magnets Fig. 6 a schematic representation of the invented

are understandable. An in-phase triggering of the educational item.

rer Eintourenkupplungen here is not gewährlei- According 6 is a on an axis 161 and

steadily, since the selection magnets do not all respond at the same time to a main shaft 163 along a platen. This phase-shifted triggering 65 movable carriage 165 is shown, on which em of the single-turn clutches leads to undesirable impacts 169 in printing units with carriage perpendicular to the paper roller 164 movable carriage high stop frequencies, which causes spherical pressure and vibrations in the gear, causing wear head 167 with on his Circumference in rows and

3 _: n

Has character types arranged in columns. and the release pawls 197, 245 mt_den From the main shaft 163 213, 247, which is fixed to the frame, to its starting position ^ ckg ^ teUt ^ a pair of bevel gears 273/275 makes it possible that ^ Ξ ^ £ * _a dem carriage 165 stored shaft 277 driven, the actual Dmck ^ Jdus em ^ "^ f characters can be given via a screw gear 279 / 28i with a than 5" S ^ the single-turn clutch 283 designed for the drive mechanism is stored as long as it is There is an active connection. Ahdnickbewe-

can be given, which via a tripping magnet 289 in order to cause an incorrect setting in the Alxteuaro

Can be adjusted clockwise. The driven member of xo giing of the print head to avoid ^{"l it} JJ ° _A single revolution clutch 283 is coupled via a coupling 280 with borrowed in that the coupling hook ψ ™™™™ £ ₉ a first driving means 225, de-drive device 225 and before ^ ££ »« £ 5 ren coupling hooks 223, 303 with lugs 219, 301 301 on the arms 213, ^M7 ^ ' ⁿ ^ T' _s JJ _{6n of the} pivotable Lf release pawls 197, 245 are articulated. As a result, arms 213, 247 will work together in a synchronous A-slose α 211 supported arms. The 15 one-turn clutches 191, poor! 213, 247 are used as selection magnets 221, 249 by using 2

adjustable in a clockwise direction and when moving in the direction of the Excitation of the selection magnets 221, 24v by Feetels selection magnets nut relaü r the 215, 307 against stops 217, 305 fixed to the frame, the effective area of the most A drawn. Can be adjusted via the rotatable 203, 296 mounted Aus ao, eme ^^^.

Föseklinken 197, 245 are single-turn clutches 191, extremely low-mass ^ele ^? ^m . ^a ^ f *%? ^m _mo S das 243 controllable, which are realized via screw gear 269/271. As a result , it is' ™ * ^ _B ^ 257/259 to be in operative connection with a printing unit as a second output device as an internal nubhW ^^ nzuordausged WeUe 255, to form a group, and to be on a carriage, the shaft 255 being via a bevel gear pair. ι, ^, κ «J _n simple-

251/253 is connected to the main shaft 163. The signal transmission takes place here memtac ^

eccentrically acting output members of the Eintou- ster way about the ^ ^ m carriage 165 ^ I ^ dne renkupplungen 191, act on a differential multiple plug 291 using the Ajw «M lever system 187, 189, 183, 181? 185, 182, 179, designed 221, 249 and the tripping magnet 289 through sen output member 175 via the teeth 30 electrical conductors are connected. 173/171 adjusted the type carrier 167 accordingly. Due to its compact and

During the Abdrudcbewegung the carriage can the printing mechanism ™ * ^? Selection magnet 249 energized, which then rotates the arm 247 of the input device both in the counterclockwise direction and uses the nose 301 in typewriters as well as for controllable the effective range of the coupling hook 303 of the works

most drive device ^ 225 brings. In the case of an expedient «* Anefuhnmgbay ^» «J

Oscillating movement of the first drive device, schematic arrangement according to b ig. Ö is lnu 225 the release pawl 245 is rotated clockwise Fig.l to 5 in a slightly modified form, whereby the one-turn clutch 243 is released. ,.

is given. For Abdruckbeweguni5 the Schiit- 40 I »Fig.l is on a shoulder, and emer fen ⁸¹⁶⁹ via a coupling 235, a rack fixed Gela main shaft 3 along ™ * 'P ™ ^ J £ ^ £ siege Winkelhetel 239 237 and a second carriage 5 shown on the right to the Fa coupling 241 with the output part of the single-turn piercing roller 4 ^ displaceable slide! 9 arranged BL kunn! "Ng 243 connected. This Schhtten9 is ™ 1 * ^ιη ^ .J ^ ¹ JSg

The way it works is as follows: The fed, 45 printhead? provided, the "^ g ^ J ^ gÄ code signals representing the characters to be printed can be set, as can be done by <^^ fg ™ ^ via a P 20 03 158.7 arranged on the carriage 165, ^where ^ ⁿ f ^ ⁰ ^ gff multiple plug 291 directed and excite a partial serious development of the print head 7 takes place via the uii of the selection magnets 221, 249 and the release "- ferent.alhebelsystem 91, 93 95 91, ^ 9 ¹ ^ ¹ gnet289. While the connected magnets 221, 50 105, 107, According to ^{Fig. 4, where d} ^ ^^ "^ 249 attract the corresponding arms 213, 247, JOS, 107 directs the activation of the first constant thickness 109, 111, .f ¹³ :" ⁵ ^ S "via the drive device 225, the single-rotation line setting of the print head 7 ^ erfdgt ute the clutch 283 is released. The e.ste DifferentialhebeI drive 85 according to Figure 2 der_ about tmtou device 225 performs a vibrating movement, renkupplungen at 55th ^^ J * "AEF ¹ ^ _pressure of its coupling hook 223 by means of training all adjustable via a coupling 83 with the UrucK Wahlmagnete 221, 249 attracted arms 213, 247 head 7 is connected. . _d

via the noses 219, 301. As a result, the impression movement of the ^S f ^h ^ "7 ™ ^ ™ _

the release pawls 197, 245 clockwise print head 7 w.rd over ei ^^^^ XZ: swiveled, and the single-turn clutch 191, 243 60 ert, de via a single-turn clutch 41 with the released / via the eccentric drive member cr second Antnebseuinchtung 40 can be coupled! Constantly of the selected single-turn clutches 221, the one cam follower element 37 _n ™ _n ^ _r ^f _ke ^d _n ^em _Di ^ pressure head 167 is adjusted accordingly and the levers 35 that are mounted interact Schhtz 33 ^ on the one wished // pe on the printing _{pad 164 initiated a 5} the ScW ^ ^^ ζ ^ ΐΓΓ ^

^ Immediately after release of the Eintourenkupplungen position 4 to obtain is ^! ^ 191. 243 the first drive device can 225 adjusting process of the print head 7 on the

5 6

lifting systems has already ended when the impression is made, which means that the

should take place. For this reason, the latter must be over the pressure edge 59 125 of the intermediate

Entialhebelsysteme are acted upon synchronously. Intermediate members 51, 121, the release pawls 43 and

In the exemplary embodiment, the must be swiveled in 129/141 and the one-turn clutches

touring clutches 41, 145 trained actuators 5 41,145 are released.

triggered at the same time. According to the invention, the intermediate member 121 interacts via its j, this takes place through a first drive unit 129, which is arranged on the underside of the wa pressure edge 125 with an arm 127 of an intermediate gene 5, and which rotates on the carriage 5 in the direction 65 over all Functions like 131 is stored. This intermediate lever 129 acts rotation and inclination adjustment and 180 ° switchover via a pin-and-slot connection 133/135 with the detachment of the print head, impression movement of the spring-loaded spring 137 and 139 stored on the carriage 5, etc. are controlled. For this purpose, the release pawl 141 together via its arm has the first drive device 65 arms 117, 119 with stop edge 143 of the one-turn clutch 145 release control edges 116 120 , the latter being above bar. For the one-intermediate agheder 51, 121 released for one revolution, the release cam 43, 129, 15-turn clutch 145, the shaft 130 of the single-turn clutch 41, 145 according to FIG. The 53 intermediate members 51, 121 connected to the constant thickness 109 according to FIG. 4 are spring-loaded and are adjusted accordingly by the print head 7. Anchors 55, 147 displaceably mounted and positioned. The impression movement is controlled synchronously via the noses 61 123 to which the control link 51 is in the active area, the control edge 59 of which is located on the arm 46 of the release pawl 43. bnngbar sma. In Fig. 5 is shown as an example of the selection. Here, the 45 Ausmagnet 57 mounted on the carriage 5 is shown which, together with the armature 55, acts against the release pawl 43 in the opposite direction. This armature 55 is acted upon by a revolving return spring 50, with the stop edge 47 of the 5 single-turn clutch 41 being slidably arranged with guide grooves 52, 54 via the halve guide web 56 on the intermediate member 51, tenase 49 of the release pawl. Via ^which · cam curves 39 is the Hehel · "nnrf Hamii Ηργ

Since the selection and the triggering of the single-tour slide 9 is adjusted

couplings based on the same principle and with the In this version, the first Amriohsein

the same elements occurs ^ the report 65 and theΓ2 SSt ^ ASwiSS are limited

Writing on two functions, namely on the 30 trained waves 132, 134, 136 130 40 on def

Printing process and the mode of action of a common main shaft fixed to the frame?

One-turn clutch with a straight line. can be driven from Also here are the? «w An

The method of operation is as follows: The drive equipment supplied «mn? η "α ί,. ct

Code signals excite part of the selection magnets 149 η "S gefreJnten Ι, ί ^ 5 ^hIm « f ^ie ₁ ^{l <} ; _f ⁵⁷ '

57, 149 tighten the associated anchors 55, 147, ₃₅ see LXgfnsTSg ^ dne '* "

starts the drive movement of the main shaft 3. That as a komifni. " r »'1 · u · u \ a>

Throw from this main shaft 3 on the one hand over not printing unit! dura, ^pressure _vl ^e _{/ c} ^{a nit} USGEB _I ldcte

bevel gears shown, which are used as second drive units ™ Mehrfachst ^? f ™ Carriages 5

direction formed shafts 40, 130,132,134, 136 gneti ^ durc? ^ eSSche ΐϊί ^{dem die} . ^{Select hlma} :

driven and on the other hand is connected via a cam 40 to a ^ KabelsrtuhT? H η ♦ ^s ! ^nd \, ^m

curve 81 and a 77 die "SSSSSk te SfT" ^v fb.ndbar mounted on the carriage 5.

Lever 71 with cam follower element 79 the first bar s ^ den \ «νί, η J ^ only distant«

drive mechanism 65 moveable. The lever 71 de ^ ÄSiSSTd ^ S; ⁶ *

engages with a pin 73 in a longitudinal slot 75 according to Fi _n 1 a- . _L .. 1

Drive device 65 a. ₄₅ of a? T «t« i ^& iii ΐ? ^ent P ^{calculating Im} P ^uls f

By counting the anchors 55, 147 ^^ ftSS ^ JIu ^ I ^^^ - Ä the noses 61, 123 are brought into the effective area of the control edges 116, 120 of the first drive device 65

For this purpose 2 sheets of drawings

Claims (1)

¹ and impair the quality of the print Claims: "" for its part is a summing gear (German of- ^A rhrift 1436728) where all 1. Power-driven printing unit for writing ^ JfS-Jg ₅ summing gear at the same time in and similar office machines with a summation 5 ~ ^tell f; j ~ " _an ]" ij _e the specific position brought type carrier, which is brought via summing gear, whose through,. ⁵ ^. ^ transmission from the eccentric actuators to the controlled by selection members. can be set, tneD aur αϊ, these must be characterized by the fact that the designation g ^ ^ _{Dkses {executes d} ^ Wahlgüeder (5S, 43, 51, 245, 247, 197, 213), the io chend start : jxm ^ _{Excitation currents need} the actuators (45, 145, 191, 243) for the em- that * e _{selection mechanism} can be operated quickly, control the actuating and printing movement, by pressing, in order to ucu ^ _{h correspondingly} strong dielecting magnets (221 , 249, 57) ends in the effective range ^to * ™ S _'e electromagnets require a common first drive means mensionicr "impair the Schrittfre- (225, 65) can be preset that di; selection _n 15 grolien κaum _{this also} members ( 55, 43, Si, 245, 247, 197, 213), arranged by ^ ** £% £ . It is also possible with this first drive device (225, 65) to adjust the carriage seiosi », which are adjustable to release the actuators (41, 145, this ^^^^^""Maad von der mo- 191 243) for di Mih dh i emem stell- uno f ^bdrucKV ° ⁸ f jdi are bar to release the actuators (41, 145, ^^^^ "" Maad von der mo- 191, 243) for entrainment by a gemem- manipulated uno f ^bdrucKV ° ⁸ _Up f _Antrie bswelle always lonely second drive means (255, 40, 130, "0 mentanenLage de ^ 'g ^a _Andererse | _{ts are here.} ¹³ I 'Ri' ¹ J? ^{ZUm DUrC} 5 ^f ^ ^hr « ⁿ H ^the fSS" ^ Ä ^ ÄffltenuitriBbe for the radial and impression movement and that the first (225 bei1 ^also f ^cl i _l d Smmentypetä ^ g _to ¹³ I 'Ri' ¹ J? ^{ZUm DUrC} 5 ^f ^ ^hr « ⁿ H ^the fSS" ^ Ä ^ ÄffltenuitriBbe for the radial and impression of movement, and that the first (225, bei1 ^{AuCN cl} f.. _Einste i _lu ng of Summentypenträ- 65) and the second drive device (255, 40, and for the axial fcinsieu g 130, 132, 134, 136) required by a main drive. _even invention shaft (163) can be driven in such a way that the input, 5 The m claim indicated _to ξ ί Deployment and printing process independent of the fashionable loading, a ur mental angular position of the main drive shaft in the case of the E.nstell- and the * ~ ^ * ™ B »i ^ ^unat (163) anytime dnleh? and is feasible. "f ^ A STS ^ S «'S H 30 SÄÄ mU der deS | ^^ 3 Revetment according to claim 1 or 2, without therefore the speed of rotation to {jj ^ jj ^ J " rch marked that the first drive unit with the number of potential stops disproportionately 3 revetment according to Anp, characterized in that the first drive unit