Centrally controlled conveyor system

• US 4,325,126 A
• Filed: 05/12/1980
• Issued: 04/13/1982
• Est. Priority Date: 10/27/1977
• Status: Expired due to Term

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Thoma, Ferdinand
• Primary Examiner(s): Wise, Edward J.
• Application Number:
  US06/148,807
• Time in Patent Office: 701 Days
• Field of Search: 474/1, 222/52, 222/53, 364/478, 364/200, 364/900, 209/548, 209/559, 209/546, 209/552, 209/564, 209/922, 198/349
• US Class Current: 700/226
• CPC Class Codes: B65G 51/46 according to separate signal systems

Abstract

Station-individual control sets of dispatching and receiver stations are connected to a multiconductor address line which is connected to a central program control device. All control sets are connected via an operation decoder to a multiconductor control line connecting to the program control device. After the output to the control line of operation information from the program control device which introduces a destination information transfer, the operation decoder of the marked dispatching station responds and applies signal voltage to a destination selection device connected to the address line in parallel with an address decoder.

Claims

1. A conveyor system with dispatching and receiver stations having station-individual control sets, which are coupled to control and signal devices for the station, said control sets being connected in parallel to a multiconductor address line for coupling to a central program control device, the dispatching stations each having a destination selection device, and dispatching stations ready for dispatching being activated by applying station-individual address information to the address line by means of the program control device, and the dispatching stations each having an assigned address decoder for responding to the applied address information when coincidence is present for enabling communication with the program control device via an acknowledgement line jointly assigned to all stations, characterized in that all control sets have an operation decoder (OpD) which can be switched ready for operation by means of an actuation signal of the assigned address decoder (Dh, Dz), a multiconductor control line (sl 1 through sl 4) for coupling the switched operation decoder (OpD) to the program control device such that the switched operation decoder (OpD) of an activated dispatching station responds after the output of operation information from the program control device to the control line (sl 1 . . . sl 4) to effect a destination information transfer operation, the destination selection device (Z0 through Z9) of each dispatching station being connected to the address line (al 1 . . . al 12) in parallel with the assigned address decoder (Dh, Dz) for the transmission of destination information identifying a desired receiver station to the central program control device via the address line, and each receiver station being responsive to address information produced by the program control device in accordance with such transmitted destination information, and said operation decoders of the dispatching and receiver stations being responsive to operation information for introducing and concluding the conveyor process.

2. A conveyor system according to claim 1, including drive, return and blocking devices, in addition to the dispatching and the receiver stations present, connected in parallel to the address line (al 1 . . . al 12), to the acknowledgement line (q1) and to the control line (sl 1 . . . sl 4).

3. A conveyor system according to claim 2, including control sets with operation decoders coupled to the drive, return and blocking devices assigned to a conveyor path determined by a dispatching station and a receiver station with the aid of the corresponding address information, and said operation decoders being responsive to information for the appertaining devices to establish a desired conveyor process.

4. A conveyor system according to claim 2, including operation signal stores (OS1 . . . OS7) respectively connected to outputs (S1, S3, S5, S7, S9, S12, S14) of the control setindividual operation decoders (OpD), said operation signal stores having outputs for connection to respective ones of the control and signal devices.

5. A conveyor system according to claim 4, wherein said operation decoder (OpD) exhibits a reset output (S4) for several operation signal stores (OS2, OS3, OS4, OS5).

6. A conveyor system according to claim 4, including signal adjustment circuits connected to certain outputs (S1, S3, S5, S7, S9, S11) of the operation decoders for supplying actuating signals to the control and signal devices.

7. A conveyor system according to claim 4, wherein control circuits are assigned to individual control devices, said control circuits being responsive to the outputs of the assigned signal stores to actuate the respective individual control devices.

8. A conveyor system according to claim 1, wherein said operation decoder (OpD) has AND-gates (U13, U17, U18) associated herewith and exhibits outputs (S2, S13, S15), for conveying switching signals to the AND-gates (U13, U17, U18) in response to respective corresponding interrogation codes supplied by the program control device to the control line (sl 1 . . . sl 4), said AND-gates being connected at their respectively other input to an output of a status signal store (ZS1, ZS3, ZS2) which is assigned to one of the control and signal devices, and an OR-gate (Q0) connected to the acknowledgement lines (q1) and having respective inputs connected to the respective outputs of said AND-gates.

9. A conveyor system according to claim 8, wherein said status signal stores (ZS1, ZS2, ZS3) exhibit a reset input automatically activated when connecting through the respectively subordinate AND-gate (U13, U17, U18).

10. A conveyor system according to claim 1, wherein the operation decoders (OpD) of all control sets are connected to a common pulse line (t1), which conveys pulses that switch the operation decoders (OpD) ready for reception when corresponding address information is present on the address line (al 1 through al 12).