SU1278820A1 - Control device for intertool conveyer-accumulator - Google Patents

Abstract

The invention relates to control systems for machine tool complexes and automatic lines, in particular, to control systems for inter-station and inter-line accumulators of workpieces for workpieces, and makes it possible to increase the reliability of the conveyor-drive operation. To do this, a descrambler for estimating the loading of conveyor positions by parts is included in the control device. It consists of a work cycle start resolution relay and make contacts of track switches to control the presence of parts and position switch contact contacts, and the start contact of the operation cycle enable relay is connected in series with the winding Timer for lifting and moving forward. Due to the introduction of the decoder into the control of the conveyor drive, idle cycles of operation are completely excluded. I il. (L

Description

YU

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The invention relates to systems for controlling complexes of machines and automatic lines, in particular, to systems for controlling inter-station and interline accumulators of workpieces.

The aim of the invention is to improve the reliability of the conveyor drive by eliminating unproductive idle operation of its mechanisms.

The drawing shows an electrical diagram of a conveyor drive control device.

The control unit contains relay 1 of automatic operation with closing contacts 2 and 3, relay 4 of cycle, L: operation with closing contacts 5 and b, common stop button 7, preliminary stop button 8, switch button with closing contacts 9 and 10, control switch the initial position with the closing 11 and the opening 12 contacts, the directional switch of the forward position of the Shtang with the closing contact 13, the relay 14 of the time of lifting and moving forward with the time closing contact 15 and the instantaneous closing 16 and 17 and opening 18 contacts, relay 19 of time for lowering and returning with time closing contact 20 and instantaneous closing 21 and 22, and opening 23 contacts, electromagnets 24 and 25 of the forward and backward control valve, the first 26 and second 27 power supply lines, automatic operation bar 28 and lifting and lowering control ladders 29 and 30 and for each i-position, a direction switch, controlling the presence of parts in the z-position with closing 31 and 33 and opening contacts 32 and 34, the lifting control relay 35 of the z-position with closing contacts s 36 and 37, the electromagnets 38 and 39 Hydrodistributor lifting and lowering and deschifrator 40 estimates load conveyor positions details thereof, consisting of the relay coil 41 resolutions Display resolution cycle starts with closing contact 42.

The device works in the following way.

When the power button is pressed, its contacts 9 and 10 are closed, and bye it turns on pe; i. 1 automatic operation, which is self-blocking. Coptak 3 Relay 1 turns on a 4-cycle relay, which also locks itself. Zampak Shch1P1 contact 6 pe.ie 4 impresses the voltage on the bus 28 aivroMaticheskoy work, and the contact 10 of the power button includes a time relay 14 (with closed contact 42), which controls the grips of parts and the forward movement of the conveyor rods. The instantaneous contact 17 of the relay 14 supplies the voltage of the nintiy 29 to the switching on of the electromagnet 38 lifting of the grippers of all the n - 1 positions of the conveyor, except for the last nth position. However, the inclusion of lifting magnets 38, ensuring movement of the part one position forward, takes place only at those positions at which there is a part and in front of which there is no part at any position in the course of the conveyor. Such selective activation of lifting electromagnets is provided by a circuit whose operation is considered on the example of the g-th position, all other positions work in a similar way.

The 0 position of the electromagnet 38 i lift is switched on when the contacts 31 are closed. I a trip switch to control the presence of a part at this g th position and contact 36 () of a relay 35 (g + 1) triggered n (and no part, / 1 and the next positions g + 1. In addition, to ensure the lifting of the grippers at all positions that have a part and which are located backwards along the conveyor relative to any free position, the closing contacts 37 of the relay 35 alternately turn on the relay 35 of all the positions following behind the free position. This ensures The grippers are lifted at all positions that have parts and which are located back along the conveyor, behind a position where there are no parts. Thus, if there is an empty position ahead, all parts are transferred: those that have an empty position. the position, and those before which there is a part, since on this conveyor rail the part will move forward and make space for the part to be found behind it.

After counting the time delay defining the end of the lifting of the grippers, the time contact 15 of the relay 14 closes, which turns on the electromagnet 24, which allows the conveyor to move forward. In this case, the bars move the parts forward, to the positions of which they were previously made under the grippers. In the extreme forward position of the conveyor belt, the track switch of the front position control is pressed and its contact 13 is closed. This leads to the activation of the time relay 19, which controls the lowering of the grippers of all position and the movement of the conveyor rods back. Relay 19 is self blocking

S with its contact 21, with contact 22 it supplies power to HI and, at the same time, 30 directly switching on all electromagnetic waves () in 39 optical fibers, and disconnecting relay 23, disconnects relay 14, electromagnet 24 and all electromagnets 38. 11o after the time required to lower the grippers, Bpe.MenHoii closes the contact 20 pe.ie 19, which includes an electromagnet 25, which returns the return of the conveyor belt back. In the initial position N1tang is pressed track

Claims (1)

5 switches.1.: 1b control of the initial position and closes eio pin 11. which re-activates relay 14. Opens contact 18 of relay And disconnects relay 19, electromagnet 25 and all electromagnets 39, and contact 17 of relay 14 closes the electromagnets circuit 38 . A new conveyor cycle is started, performed similarly to that described. The decoder for estimating the loading state of the conveyor inserted into the conveyor control device operates as follows. The work cycle enable relay 41, the closing contact 42 of which is inserted into the turn-on circuit of the relay 14, which defines the beginning of a new work cycle, is activated only under certain conditions. These conditions, at least for one of the p positions of the conveyor, are formulated as follows: there must be a detail on any of the positions from 1st to (p-I); the position following the filled position must be free. These conditions are realized by n-1 parallel circuits, each of which is a series circuit of the closing contact 33 of the track switch controlling the presence of the part at a given position and the break contact of the track switch 34 of the detail presence at the next position. Such a circuit is connected to the winding of the relay 41, determining its on or off state. For the rth position, the permission to turn on the relay 41 is obtained if the part is in the (-th position (contact 33. i is closed) and the part is missing in the (/ - | -1) -th position, contact 34 () is not open. Thus, the decoder for loading positions of the conveyor inserted into the proposed inter-carrier conveyor drive control device eliminates idle transporter strokes in the absence of conditions for moving parts, i.e., in the absence of vacant positions on the conveyor. An accumulator containing the automatic operation relay, the winding of which by the first output through the serially connected disconnecting contact of the preliminary stop button, the first closing contact of the on button and the disconnecting contact of the general stop button is connected to the first power bus, the first closing contact of the relay button is connected parallel to the first closing button of the on button automatic operation, the winding of the cycle of operation of the first output through a series connected first own short circuit to Onact and trip contact of the reference position control switch is connected to the output contact of the common stop button, which is connected to the first terminal of the operating time relay coil through the second closing contact of the automatic operation relay; moving forward through a make contact of a time-delay relay and moving forward are connected and connected via parallel connected the second closing contact of the on button, the closing contact of the position control switch of the initial position and the chain consisting of successively connected instantaneous closing of the lift time relay and moving forward and the instantaneous closing contact of the lowering and return time relay to the automatic work bus, which is connected via the second the closing relay contact of the cycle of operation with the first power bus, the first output of the winding of the lowering time relay and the first output of the hydraulic distributor electromagnet moving back through the time closing contact of the lowering and return time relays are connected and connected via parallel-connected closing contact of the track switch for the forward position of the rods and a chain consisting of series-connected instantaneous shorting contact of the lowering and return time relay and instantaneous disconnecting contact of the lifting time and forward movement, to the bus of automatic work, to which are connected through the instantaneous closing contacts of the time switch for lifting and moving Editing and lowering and returning time relays of lifting and lowering control buses, respectively, the winding of the lift / position relay by the first output through the parallel-connected first closing contact of the lift of the subsequent position and the first disconnecting switch of the control switch for the presence of parts at this position are connected to the automatic operation bus the electromagnet of the hydraulic distributor of the lift by the first terminal through the series-connected closing the first contact of the directional switch to control the presence of the item the second closing contact of the lift of the subsequent position is connected to the H1 control, the lower control valve solenoid electromagnet is connected to the second control bus of the lowering control, and the second windings of all relays and all electromagnets are connected to the second power supply bus, different that, in order to increase the reliability of the accumulator conveyor .1, it introduced a decoder for estimating the loading of the conveyor positions, containing a pe.ie for breaking the start of the work cycle and additionally entering the 1st closing and opening contacts of the road switches of the control panel. -and positions, closure) PI | track contact switch controlling the presence of the part in the first position and opening contact of the track switch controlling the presence of the part in the last position, while the winding of the work cycle resolution relay is the first the house is connected to the first common point n-1 of parallel circuits, each of which contains in series connected the closing contact of the directional switch controlling the presence of parts on the z-th eight -a 17 6, b1 {1-1 h ((L + 21% // 41) 1 + 1 36 ( 1 3P1 + 1) gg (jn, ) 3a4Mil ZrL.; -OK   jj (, I / Rear (p-7}. position and trip switch breaker contact (1 + 1) -th position of the second common point n-1 of parallel circuits connected to the first power bus, the second terminal of the work cycle resolution relay connected to the second terminal of the winding of the relay connected to the second power bus rise time and moving forward and its instantaneous closing contact. one 27 21 {rO 2 t-7 I J5M 22 LTT 1-1 39 L Gb -/one one 0J