DE1499553B2 - Arrangement for monitoring the flow of flat mail items provided with a target indicator in a distribution conveyor system - Google Patents

Description

1 2

The invention relates to an arrangement explained on an exemplary embodiment. It

to monitor the passage of with a target point

Labeled flat mail items in a fig. 1 the arrangement for monitoring the

Distribution conveyor system, consisting of a main throughput of

conveyor line and branching, with extendable switches 5 see flat mail in a distribution conveyor

provided secondary conveyor lines, whereby the main system,

conveyor line through the secondary conveyor lines and F i g. 2 a diagram of the signal lamps for the

these by the extension points in sections show of congestion and

equal length are divided in such a way that all of F i g. 3 part of the steering and control mechanisms Feed station equally distant sections io circuit.

one path compartment between isochrones is located in each case. 1 shows a main conveyor line h with one voice and each track compartment a memory of a number of secondary conveyor lines g _t to g ₈ , which shift registers lead to receiving a binary transfer to storage area. The letters are assigned to the encrypted target identifier, WO main conveying line guided h after b means with the displacement of the target indicator 15 a removal means individually a one arranged in front of each portion of waste removed from the batch and the reader / is triggered enttaster and have been directed after each mismatch. The target identifier is the target identifier in the section on the letter in code characters. The memory corresponding to the code will indicate a point setting signal is scanned with the reading device I and given. 20 and transformed into electrical impulses. The information

In an arrangement of this type known per se, the circuit S is used to check for validity.

(German Auslegeschrift 1156 705) is trolled in front of each and provisionally fixed in a number of storages.

Section arranged a photocell. Placed when passing. :: _; : ··. ·. · ..-

When the front side of a letter passes the photo target identifier in the shift register by one cell / 1 in the main conveyor line h , a cut is made. The photocells of the same order, the information from the circuit S in the shift, ie the same number of sections, are taken over by the register levels S _{1 a} and s _lb. In the letters reached in the same times. The register of the shift memory assigned to each rail shift register stage S _{1 b} is located in the binary code with respect to the secondary conveyor line, in is the path to be selected in the relevant rail 30 which the letter is to be delivered, while in fold, whereby the control by photocells, which the shift register stage ^ ₁ "the information relating to the intersection of the isochrones and the borrowed the ranking number of the depository are located in that letter web, is activated. Secondary conveyor line is available.

In another known arrangement After the front of the letter has passed the photo (SEG-Nachrichten, 1954, Issue 4, pp. 39 to 42) it is 35 cells / 1, it is in the first one during the transport of the mail piece into the secondary conveyor track compartment I. The end points of this track compartment are required, the target identifier from the one marked by the photo cells / 2 and /1.1; the memory of the main conveyor channel in separate additional end points of the second track compartment II will be taken over by borrowed memory as soon as the item of mail marks the photo cells / 3, /2.1 and /1.2. The information can now have passed through the shift register in the first section in the secondary conveyor line 40. In addition, congestion can take place through the such that if, for. B. one of the photo seizures of a letter may occur. In addition, cells / 3, /2.1 or /1.2 go dark, the informa it is possible that. Due to a fault, a soft tion content of the shift register stages s _2a and s _2b does not comply with the electrical control command, the register stage s _{3 a} and s _{3b is} transferred. For which it can be sorted incorrectly. 45 the other path compartments III to XII, this is done in

The invention aims in a similar manner.

Arrangement of the type mentioned at the beginning, so on

form that disturbances in the simplest way with a logic circuit with the shift register stages

a minimum of technical effort to detect for the associated track compartment. If z. B.

animals are. 50 the information content of the shift register stage S _{1 b}

According to the invention, this task is thereby achieved 001, that is to say a binary coded one. 1 is, the solves that the on: an; isochronous, lying flap A ₁ excited and the letter in the vertical netastern impulse generator ... are connected downstream, passed from ben conveyor line g _t . If the letter continues to give the first a time pulse for the specified for the second depository in that secondary conveyor duration of the passage of a mail item, the second 55 route. determined, then at the moment in which a cycle time end pulse is emitted and that the photocell / 1.1 is covered by the front of the letter AND element that is passed over one to be set, the binary. Information 010 in the switch signals. \ yenn brought shift register stage s, _a during the time pulse, whereupon both the turnout control and a scanning excitation of the extension turnout k _{x 2 take} place,
signal for the next section are present, 'and that 60 The sorting process for the further distribution of an AND element signals a congestion, if with mail pieces takes place in the same way. A number of letters that do not have a scanning signal for the end-of-transit time pulse can arrive in the secondary conveying routes at the same time as the next section. to be present early; however, per lane compartment can be in

Jams can be very easily managed - just one letter at a time

by locating that for displaying the faults 65 the end points of the secondary conveyor line g _x to g ₈

a lamp panel in front of the place of their occurrence are connected to the return conveyor line. If

is seen. a letter does not make its way through the distribution system

The invention is now based on the drawing an extension switch in such a position

meets that this letter is brought to a storage facility, this letter becomes the return conveyor line fed.

The control and monitoring circuit is shown below with reference to FIGS. 3 described. In this figure a part of the circuit is drawn which relates to web compartment III. If the front of a letter passes one of the photocells / 3, /2.1 or /1.2, one of the inputs of the OR gate P ₁ becomes negative. The output of inverting amplifier F ₁ then goes positive. The information from the shift register stage s _{2a is transferred} to the stage s _{sa by} means of the AND gates P ₂ to P ₇ operating in the positive polarity.

It is assumed that a letter is intended for the second depository in the secondary conveyor line g ₂ . At the moment in which the output of the inverting amplifier F ₁ receives the positive polarity, the binary information 010 appears at the outputs of the register stage S _{3 a} , with the result that the AND element P ₉ on working with the negative polarity Output receives negative polarity.

The electromagnet of the exit switch k 2.2 is then excited via the reversing amplifier F ₃ , with the result that the letter is delivered to the desired depository during transport through the secondary conveyor line g _2. If the information 001 is present at the output of the register stage s _sa , the electromagnet of the extendable switch k _{21 is} excited via a similar circuit. The letter is then delivered to the first depository.

If one of the electromagnets of the turnouts Ic ₂₁ or k _{22 is} excited, the OR gate P _{10 has} a negative output voltage. If the photocell /2.1 is covered by the front of the letter, a negative voltage pulse of a somewhat longer duration than that which a letter needs to pass through a web compartment will arise at the output of the pulse-generating network D _1.

If, in the example mentioned above, the exit switch k _{22 is} not set in the correct position, the letter will not be delivered to the depository; rather, after a certain time, the photocell / 2.2 is covered, which creates a negative potential at the output of that photocell. In that case, a negative voltage will arise at the output of the AND element P ₁₁ operating in negative polarity, which voltage will reach the inverting amplifier F _{4 via the OR element P 12} . In the output circuit of F ₄ , the signal lamp L 2.1 is provided, which in the case of failure of the extension switch k. _2O glowing. The position of the signal lamp on the in F i g. The signal board shown in Figure 2 indicates the point of failure.

If a letter is not to be delivered to the depository 1 or 2 of the secondary conveyor line g ₂ , the element P _{10 will have} a positive voltage at the output. A negative voltage is then present at the output of the inverting amplifier F _5.

At the output of the pulse generator D ₂ , at the end of the pulse, there is a negative pulse of a short duration, which is supplied by the pulse generator D _1. During the occurrence of the pulse which is supplied by the network D ₂ , the letter must have reached the following path compartment; thus the output of the inverting amplifier F _{6 must} be of positive polarity. In the case of congestion, this is not the case; then the output of the AND element P ₁₃ operating in the negative polarity becomes negative, as a result of which the signal lamp L _{2-1 also} glows _{again via the element P 12} and the amplifier F _4.

Similar circuits are provided for the remaining signal lamps.

Claims (2)

Patent claims: 1. Arrangement for monitoring the passage of flat mail items provided with a target identifier in a distribution conveyor system, consisting of a main conveyor line and branching secondary conveyor lines provided with extension switches, the main conveyor line being divided by the secondary conveyor lines and these by the extension switches into sections of equal length in such a way that all sections equally distant from a feed station each determine a web compartment located between isochrones and each web compartment is assigned a memory of a shift register for receiving a binary encrypted target identifier, the displacement of the target identifier being triggered by a scanner located in front of each section and after each displacement of the A turnout control signal is outputted into the memory corresponding to the section of the target identifier, characterized in that the scanners (e.g. photo cells / 2.1, / 3, /1.2) located on an isochronous pulse generator (Dl, D 2) are connected downstream, of which the first (Dl) emit a time pulse for the specified duration of the passage of a shipment, the second (D 2) a passage time end pulse and that an AND element (P 11) the overrun a turnout to be set (e.g. B. A: 2.2) signals when during the time pulse (from Dl) both the point control signal and a scanning signal (z. B. /2.2) for the next section are present, and that an AND element (P 13) signals a congestion if no scanning signal (e.g. /2.2) for the next section arrives with the cycle time end pulse (from DT). 2. Arrangement according to claim 1, characterized in that for displaying the disturbances a lamp panel is provided after the place of their occurrence. 1 sheet of drawings