DE1921260C3 - Device for scanning rigid card-shaped recording media - Google Patents

Description

opposite sense operable to achieve a locking speed.

direction (9, 17) to lock the feed me- A disadvantage of these scanning devices is jo

mechanism in the scanning direction during the phase that it is not guaranteed that before the Ab

for the said insertion of the recording scanning start of the recording medium also actually.

carrier in the scanning device releasing 20 completely pushed into the scanning device.

Control slide (15) is arranged. was and that actually all of the info

?. Device according to Claim 1, characterized in that the contents of the record carrier are abgetasi.

indicates that the scope of the feed is. The record carrier never will!

roller (5) of the length of the recording to be scanned is completely inserted into the scanning device

carrier (1) and that a switch as before the scanning begins, the Au:

Cam (14) for actuating the control slide label carrier still scanned ». and the at d.

(15) devices connected directly to the feed roller (5) are connected to the scanning device with ir,

net is. formations, but since this informs

3. Device according to one of claims 1 functions are mutilated, which must have already taken place

or 2, characterized in that in the 30 further use and further processing of this ver

shift area of the information truncated by the feed roller (5) is deleted and the scanning forward

actuatable control slide (15), the scanning process can be repeated a second time. Thereby he

Gane (13) are arranged in such a way that they usually result in considerable disturbances in the working area

rend the insertion phase of the recording cycle rhythm.

gers (1) through the control slide (15) outside 35 Furthermore, a scanning device for Lochka:

the guideway for the recording medium th became known, in which one in the cards

(1) are locked. guide channel inserted recording medium

when reaching the end of the channel on one Shift lever hits and over this shift lever the

40 simultaneous scanning for all scanning

set triggers and causes an ejection movement. Since in this case all sampling points simultaneously are evaluated, it is not necessary to

The invention relates to a device movement sequence of the recording medium during turn scanning of rigid card-shaped recording 45 to control the scanning phase. The multitude of but in Power carriers, especially plastic punched cards, each of which is required for scanning When inserting the card over the feed, it is a considerable technical effort. roller pulls up a spring accumulator, which with the front It is the object of the invention to provide a scanning device feed roller and a centrifugal governor to provide a device that is easy to use in your Forms the thrust mechanism and the drive shaft 50 structure and thus inexpensive to manufacture and in gie for the advance of the recording medium: acquisition is, however, a maximum of rend of the sampling phase. Reliability offers, in particular, for the scanning of perforated recording that it is ensured that the entire recording medium, such as punch cards, in particular for information carriers stored are actually high and the highest processing speed Ab- 55 is scanned for further evaluation, Probe devices of high quality and performance This is made according to the invention by a device capability became known, which, however, achieved due to the aforementioned genus, which Their high efficiency is characterized by elaborately in the her- ck; i3 e: n through the imagination and are expensive to buy. For feed roller at the end of the infeed phase in Different areas of application are so highly valued and at the end of the sampling phase equipment is not absolutely necessary. This meets the opposite operable sense, a lock in particular then to when chanismus by the scanning device to lock the feed mechanism only individual card-shaped recording media in the scanning direction during the phase for the entire group should be processed. This applies, for example, to the insertion of the recording medium into the rejectors for orders for goods in which every 65 key device-releasing control slide is arranged type of goods a specific punch card is assigned, net is.

in which the own data of the goods as Lochco- This locking mechanism prevents so

dekombinationcn are stamped. When ordering, you have the option to scan the

benen recording medium until it is actually completely inserted into the scanning device is and has taken the starting position for the scanning process. A garbled evaluation information is no longer possible with the aid of such a device.

An advantageous embodiment of the device according to the invention is characterized in that the circumference of the feed roller corresponds to the length dee of the recording medium to be scanned and daft a switching cam for actuating the control slide is arranged directly on the feed roller.

According to a preferred development, the device according to the invention is characterized in that that in the displacement range of the control slide which can be actuated by the feed roller, the scanning elements are arranged in such a way that they pass through during the insertion phase of the recording medium the control slide are locked outside the guide track for the recording medium. This measure enables, on the one hand, easy insertion of the recording medium into the scanning device and on the other hand also prevents damage to the recording medium by the scanning elements during this phase.

Details of the invention emerge from an exemplary embodiment shown in the drawing from the following description. Show it

F i g. 1 is an oblique view of the essential parts of the scanning device and

F i g. 1 is a sectional side view of the scanning device in the area of a scanning element.

For reasons of expediency, the recording medium to be scanned is designed as a punch card 1 made of plastic material, in order to cope with the kinking stress that occurs in particular when inserting to withstand. The recording medium 1 contains nine information tracks 2 and one transport track 3. The information holes can be produced by breaking out holes in prepared holes Slugs held in place 4.

When inserting such a recording medium 1 into the device, the feed roller S a spring mechanism 6 acting on its axis is drawn up. The energy stored in this process is during the following scanning phase, which acts in the opposite direction, for advancing the recording medium 1 used. The gear 7 arranged on the shaft of the feed roller 5 drives an overrunning clutch, not shown, which only during the scanning phase between the feed roller 5, a gear wheel 8 and a timing wheel 9 establishes a slip-free working connection. The gear 8 drives a worm 10 Centrifugal governor 11, through the action of which a uniform scanning speed can be achieved. With Contact spring tongues 12 work on the timing wheel 9 to determine the point in time of the electrical evaluation the scanning members 13 together.

On the shaft of the feed roller 5, the circumference of which corresponds to the length of the recording medium to be scanned 1 is adapted, a switch cam 14 is arranged. This switch cam 14 acts upon termination of the S phase for both insertion of the recording medium 1 and the scanning of the recording medium 1 on a control slide 15, in each case in the opposite direction. The scanning elements are in the range of motion of the control slide 15 ίο 13 and one with which in this case acts as a ratchet wheel Timing wheel 9 cooperating, under the action of a spring 16 daher.de pawl 17 is arranged.

In FIG. 1 shows the rest position of the device in which a recording medium to be scanned 1 can be inserted. During this phase, the control slide 15 takes its left end position one in which he holds the scanning members 13 pivoted outside the guide channel and in which he di: 3D pawl 17 releases so that the **, in that as a ratchet wheel Acting clock wheel 9 come running down. A change in this state of the device is only achieved when the recording medium 1 is fully inserted into the scanning device, namely by the switching cam 14, which at the end of the insertion phase via an actuation approach the control slide 15 pushes into the right end position, whereby the scanning elements 13 are released and the pawl 17 against the force of the spring 16 by an actuating shoulder 18 from the area of the al> Ratchet acting clock wheel 9 can be pivoted.

The spring 6 pulled up when the recording medium 1 is inserted drives via the pre-vibrating shaft 5 the punch card 1 out of the scanning device. The scanning members 13 fall into the holes of the see recording medium 1 moving past, the corresponding signaling contacts being closed will. The scanning members 13 have a slope on both sides, whereby a sliding of the Scanning members 13 ensured in the holes and bouncing is largely avoided. The governor 11, which via the overrunning clutch during the scanning phase with the feed roller Is connected slip-free, ensures a steady return speed, while the timing wheel 9 in the Cooperation with the contact springs 12 the exact point in time for the electrical evaluation of the scanning results determined. After completing the scanning process: is about to wave the Feed roller 5 arranged switching cam 14 of the control slide 15 pushed back into its left end position, in which the latter locks the scanning members 13 outside the guide track for the recording media 1 and the pawl 14 releases again, so that it follows the force of the spring 16 in the ratchet wheel can occur A new scanning process can only take place again when a new recording medium 1 was completely pushed back into the scanning device.

1 sheet of drawings

Claims (1)

one of these types of goods is used as order sub-patent claims: If there was such a punch card for writing on the stellxies used. I. Device for scanning rigid card- For such areas of application, scanning devices are ten-shaped recording media, in particular 5 directions become known in which as a drive of plastic punched cards, in the case of insertion for the recording medium during the Abiast- the card over the feed roller a spring phase spring accumulator are arranged. Will an am- Memory pulls up with the feed roller and drawing carrier in such a device against the a centrifugal governor inserted a feed mechanism scanning feed direction by hand,> o mus forms and the drive energy for the to is generated via the feed roller of the spring accumulator. Advance of the recording medium during the drawn. This during the insertion phase of the Au; Sampling phase supplies, thereby marked drawing carrier stored energy is used Uu shows that a drive of the recording medium through the feed roller during α.- (5) at the end of the insertion phase in a sampling phase. Via a speed control «· - Sense and at the end of the sampling phase in de-staring it is possible to achieve a uniform sampling rate: