DE1954240C3 - Arrangement for monitoring the strip feed in a ratchet mechanism for a punched tape drive - Google Patents

Description

Ä -

The end is provided with a soft, gauzy, "," ^α "5" ^η ^ Γι ^e ™? ™ ⁿ sc _h , _a8l , _ä ch "(6"). _JS SÄSSTÄ SfESaittbe "!

Switching arm is provided by pressing a

Contact the proper implementation of the

Of the movement step.

₄ o The advantages achieved by the invention exist

ß dh j ^ S

₄ o The one with the Erfig

The application relates to an arrangement in particular that by gejng ^ StS "

monitor the strip feed with a clincher means a ratchet switch mechanism with a strip

kensaltwerk for a punched tape drive, with wel- feed monitoring arrangement are provided

a clutch lever can be attached to the ratchet lever, whereby the space requirement practically does not

* is articulated, which is also changed by means of a spring with the 45. . .

Pawl switching lever in a non-positive connection Using a version ^te «P« ' ^sw ' ^{rd dl} «f ^r "

Iteht, and with both levers in the rest position in the finding in connection with the drawings after-

iv are essentially parallel and are properly explained in the following. It shows

moderate feed step, which is achieved by an on the coupling F i g. 1 shows the principle of a lever switch

Actuator lever acting stepping drive geared according to the invention in the rest position

is released, perform a tilting movement. F i g. 2 the ratchet mechanism of the F1 g. 1 in Mon

By the American patent specification 2 735 888 ment the termination of an interface,

Is a ratchet mechanism for punched tape drives Fig. 3, the ratchet mechanism of Fig

tier of the aforementioned type known. At this execution point in time of FIG.

tion serves the force-fit connection between 55 ner escapement in the strip replenishment.

the ratchet shift lever and the clutch lever As shown in Fig. 1 in the schematic representation

tlazu, which lets you know the trigger time of the strip continuation, the transport of the recording

to delay other operations. Here voltage carrier 1, which z. B. a punched tape or

becomes more known per se in the course of a work cycle which the force can be an edge hole card

closing spring tensioned and suitable- 60 way by means of a pearl wheel 2 a, which has a pe-

tcn time of the locked ratchet shaft 2 b rigid with the ratchet wheel 2 of the

shift lever released. The tensioned spring causes the ratchet mechanism to be connected. In the teeth

then the progression of the strip. This principle of the ratchet wheel 2 engages in one not shown

prevents the strip from e.g.

Resupply inhibition in the transport perforation 65 bearing pin 4 b pivotable with a ratchet switch

runs away, but no corresponding monitoring lever 4 is connected. On this ratchet lever

chung with error message instead, so that apart from 4 is to the right of the pawl 3 by means of a bearing

from the undetected fault also the perforated pin 4 c a clutch lever 6 made of soft magnetic

3 ^ν 4

This material is articulated so that it can be swiveled, when the stepping drive is excited, via the pulling device, at the end of a horizontally bent stop rod 9, as already described, from the flat 6 α in FIG. With this, the clutch position shown is pivoted about the axis 8, rotating at 6 on the underside of a permanent magnet 5. This via the pawl 3, the KIman, which in turn is attached to the free end of the Klinkenschalt- 5 kenradl and the pearl wheel la on the recording lever 4. The adhesive effect of the magnet trägerI exerted force in the direction of arrow A (Fig.2) is parked by a spring 7, which takes effect due to the above-mentioned inhibition of the two levers 4 and 6 and so dimensioned drawing carrier continuously. The usual consequence vär? is that the two levers 4 and 6 rest against one another with a multiple tearing out of the transport perforation or a surface of the magnetic force. A gets I.

Axis 8 is on which the clutch lever 6 is mounted. This is in the present case by the measure. At the free end of this clutch lever 6 engages the frictional coupling of the ratchet, not shown, for example a lifting magnet including switching lever 4 with the drive via the clutch end stepping drive via a pull rod 9 15 lever 6 avoided. Here this is positively engaged by the spring 7. and the field of the permanent magnet S is generated. In order to enable electronic monitoring of the stepping moment just enough to allow voltage fluctuations, the ratchet switch of a certain size in the recording medium lever 4 is provided with a switching arm 4a, which has no effect on conveying , but that from a contact 10 is assigned to which 20 predetermined counterforce, which is certainly opened briefly, when the tear limit of the recording carrier 1 shown in FIG. 2 lies, the end position assumed by the switching mechanism Moment of the spring 7 and the permamen will. nentmagneten 5 is overcome. That is, the In the case of FIG. 2, a proper ratchet switch lever 4 lifts - now about the step transport of the recording medium I in arrow 25 pivot pin 4 b in the direction of arrow D - is carried out from the direction / 4. Rotating around the axis 8, clutch levers 6 have started. The field of the two permanent magnets 5, which are frictionally connected to one another, is already reduced with a slight air lever 4 and 6 due to the direction of the arrow Z? on split practically ineffective, so that only the force of the step acting on the pull rod 9 to overcome the moment returning the spring 7 schaltantriebcs is a clockwise 30. This prevents, after the ratchet pivoting movement has been carried out, whereby the ratchet shift lever 4 has lifted once, also with the ratchet 2 and thus the pearl wheel la from being indexed via the ratchet 3 by voltage fluctuations that occur. Shortly before events prevail.

Chen the end position shown, the contact 10 is opened by the locking of the pawl 3 in the course of the switching arm 4 α . This is for example 35 of a switching stroke due to the inhibition Streifenvorschubvon is a downstream monitoring electronics - as already mentioned - the Lagerais receipt for the proper stepping pin 4 b to the pivot point of the K inkenschalthebels4!. of the recording medium 1 is evaluated. In the course of the switching stroke the case now occurs that the recording carrier 1 rotating clockwise at the time of the intended progression at 6 pivots the ratchet switching lever 4 by means of a force directed in the direction of arrow C, the bearing pin 4 c counterclockwise. As a result, which, for example, by an inhibition in? Nachschubsy- is prevented that the switching arm 4a can cause the contact star, on another 10 can operate. For example, by checking the movement in the direction of arrow A (Fig. 2), the electronic monitoring system is prevented at the time of the expected, the switching mechanism reacts to this in 45th transport. 3 illustrated way. Contact 10 recognized that the intended continuation, assuming that the previous advancement of the recording medium 1 was not or the switching of the recording medium 1 in otdnungsge not completely, so that, for example, the moderate way is done and the feedback is interrupted by the drive or switched off and the contact 10, the subsequent step circuit 50 incorrect display is switched on. Only when an initiates, the frictional connection with each other can be resumed after the incorrectly connected levers 4 and 6 with a renewed Er-! Er operation.

1 sheet of drawings

Claims (1)

Patent claims: χ ² the repetitive stress. I. Arrangement _Z "m monitor the strip- gJJ ^^ J ^ S ^^ t ^^^ £ ⁵ SÄt ^ .e, the German Patent- Kiinkensclmlthebel a clutch lever labeled 1 uüji am. _{D of this type exist} directs, which is additionally connected to the die via a spring. *** ££ * £ ⁿ ° [ _ner ^ a separate unit, which Kimkensehaltbebebie in a frictional connection is in front of a "g" J "J" and stands over a dung, and in which both have bn rest; »^^^^ ϊΐ dir kind of the vorgesannstand run essentially parallel and at fcbteufw ^ wr ² T ^D _{te strip over} . Proper feed step, which is triggered by * ^ «*" » _si ch the loop by increasing a step acting on the clutch lever ^Ve ™ ⁿ j ^" * 's _tr eif _CnS tension, then via switching drive, a tilting movement ^ S ^ S ^ SSto or indirect discharge, characterized in that i _S ^de "f. ™ _d ° J SSterbrecbung des Transportantriedaß the tilting movement of the interconnected circuit or unrerDremu _B which lever (4, 6) takes place around an axis (8) on ^bes ;. ^ _n , _re i _at i _v large technical of only the clutch lever (β) mounted .st that going away from the rem Jj ^ ^ the spring Π) is so dimensioned that the effort required to oerai ge ^ small or end-circuit between the ratchet lever (4) and "at ht.gen η T ch MOG chsMe men ^. the clutch lever (6) upon occurrence of a handy G.rattn ° f ^e ^ _{v (m disadvantage.} during a proper switching stroke the ^Gro ß ^e _f ^{de [-like} f. ^ ^{r 1} "," u _"d f" _e f _Au abe based autogenous reaction force is retained, b However, the invention entails that the AirtgaM «j exceeding of this counterforce ^via an arrangement for the ube ™ ^ah <£ ^des * ^c ™ ^r . is wound, and that the _{ratchet lever (4) * 5} to create thrust, de is provided in a ratchet mechanism with a switching arm (4 a) , which by tegnert ^ ' ⁵ J- _{d crfindungsge} according to it