SU1571553A1 - Device for controlling position of driven mechanism in torch cutting machines - Google Patents

Abstract

The invention can be used in gas-plasma cutting machines for products from sheet metal in the engineering and shipbuilding industries. The purpose of the invention is to simplify the device and expand its scope. To achieve this goal, a contactless position sensor of the slag collector and two end switches of the extreme positions of the slab collector were inserted into the device containing the matching unit of the leading mechanism — the plasma cutting portal and the slave collecting mechanism, and the matching portal of the portal and the slag collecting unit included a carriage connected by a cable slung through pulleys, with a slag collector. 4 il.

Description

The invention relates to controlling the movement of one mechanism depending on the movement of another, and can be used in gas-plasma cutting machines for sheet metal products in the engineering and shipbuilding industries.

The purpose of the invention is to simplify the device and expand its field of application by providing the possibility of continuous tracking of the leading mechanism.

Figures 1 and 2 illustrate the structure of the device; FIGS. 3 and 4 are schematic diagrams of the device.

The device comprises a blank 1 of sheet material, supports for the blank 2, a driving mechanism — a portal 3, a driving mechanism — a portal 4, a cutting tool (gas-plasma) 5, a driven mechanism — a pshakosbornik 6,

cable 7, cable branch 8 fixed to the slag collector, guide 9 of the portal movement, interaction element 10 rigidly fixed on the portal 3, guide 11 of the movement of the slave collector, carriage 12, I, II and III odd and even branches of the cable 13 7, pulley 14, slag collector drive 15, guide carriages 16, sensing elements 17-19, rigid connection 20 of an element interacting with a portal 3, direction of movement of the portal movement 21, direction of movement of the carriage 22, relay 23-25, switch on button 26, off button 27, relay 28, contact t 29 relay 28, the break contacts 30 and 31 of the relay 23, the reversing motor starter 32 and 33, 34 make contact relay 24, the contact 35 of the actuator 32, closing vl konSP

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Act 36 relay 25, contact 37 actuator 33, power contacts 38 and 39 of starters 32 and 33, limit switches 40 and 41 control the extreme positions of the collecting box.

The sensing elements 17-19 and the Element 10 of the interaction form a non-contact portal position sensor. Relay 23-25 buttons 26-27, relay 28 J contacts 29-31, reversing starter 32, 33 and contacts 34-38 form a slag collecting drive control unit.

The condition for normal function and animation is to perform the ratio V, V

where V is the average speed of movement of the pshakosbornik,

V / j is the maximum speed of moving the leading mechanism (portal). 2

In the initial position, the workpiece 1 is laid on the supports 2, the stacker 6 is installed under the portal 3 in such a way that the cutting tool 5 placed on the portal is placed 2 above the slag collector and the protrusion of the interaction element 10 is in the zone of action of the sensitive element 18.

The width of the slag collector is approximately the amount of movement of the cutting. tool on the portal (direction not shown). Therefore, moving along this coordinate is of no interest for collecting cut products. In order to collect cutting products, it is necessary to accompany the leading mechanism (portal) moving along the guides together with the cutting tool, the driven mechanism (slag collector).

The device works as follows.

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When the driving mechanism — the portal 3 with the cutting tool 5 45 and the interaction element 10 — moves, the latter leaves the sensing element 18 with its protrusion. Let the portal move from left to right. Slag collector 6 while JQ is in place. When the portal is moved, the cutting tool 5 performs the cutting of the sheet stock 1. The cutting products are collected in a slag collector. Upon further movement of the portal in the specified direction, the interaction element 10 interacts with the sensitive element 19. At the same time, the relay 25 is activated, which

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Volume 36 includes an actuator 33, which becomes self-powered by contact 37, and power contacts 39 includes an actuator 15 of the slag collector. The slag collector begins to move behind the leading mechanism — the portal and catches up with it, since V, V., i.e. the driven mechanism catches em leading. At the moment of combining, which corresponds to the cutting products entering the Shlakosbornik (its center), the interaction element 10 mounted on the driving mechanism, the assembly, interacts with the element 18 mounted on the carriage 12.

When this happens, the relay 23 is connected to the element 18. The opening contact 31 of the relay 23 turns off the starter and the drive of the slag collector. If the movement of the master mechanism — the portal in the indicated direction — continues, then each time the alignment process of the position and the slave mechanism repeats in the same way. If the driving mechanism moves from right to left, then when the driving mechanism moves, the portal element, the interaction element 10 interacts with the sensitive element 17 mounted on the carriage. This triggers the relay 24, which by its contact 34 includes the starter 32 and the drive 15 of the slag collector. The starter becomes self-powered through its contact. 35. Guided Mechanism - The slag collector begins to catch up with the lead - portal, the Slag collector has turned on for cutting products. And again, he caught up with, since VT V2. At the moment when the interaction element enters the zone of action of element 18, the relay 23 will operate, which by its contact 30 will turn off the starter 32 and the drive. The movement of the slave mechanism is suspended. The process will be repeated each time the movement continues in the indicated direction.

Thus, when the master mechanism, the portal, is moved, it is accompanied. In this case, the distance between the sensing elements 17 and 19 is chosen somewhat less than the length of the slag collector. therefore

the driven mechanism is activated every time the movement of the mechanism (with a cutting tool) can go beyond the limits of the slag collector, beyond its length. This ensures the collection of cutting products in the slag collector.

It is fundamentally important to connect the carriage to the odd branch of the cable with respect to branch 8, the received odd one (1). This ensures the coincidence of the directions of movement of the slag collection and the carriage, and ultimately the combination of the driving mechanism and the slave.

Claims (1)

Invention Formula A device for adjusting the position of the driven mechanism in gas-cutting plasma cutting machines, which contains a block for coordinating the position of the driving mechanism — a plasma cutting portal and a driven mechanism — a slag collector, two end switches of the extreme positions of the slag collector, and a control unit for the slag collector differing in that in order to simplify the device and expand its area of application by providing the possibility of continuous tracking of the leading mechanism, the position matching unit; Neither the portal nor the slag collector contains a contactless position sensor of the portal, including three sensitive elements and an element of interaction with Tj 71553 by them - J ten 15 20 25 thirty a carriage connected by a cable forming parallel branches and thrown over the pulleys with a slag collector with the possibility of moving along the cable in the direction coinciding with the movement of the portal, the interaction element with the sensing elements being rigidly connected with the portal the axis coinciding with the direction of movement of the carriage, the ends of the odd branch of the cable are connected to the carriage relative to the branch connected to the collecting container, and the signal outputs of the sensitive elements of the cable with the corresponding inputs of the drive control unit of the galaxy collector, which includes three relays and two reversing starters, the closing contacts of which are included in the power supply circuit of the slag collector drive connected to the output of one of the pulleys, the control inputs of the relay are connected to the corresponding inputs of the control unit of the slag collector drive, the first reversible the starter is connected to the power circuit through the opening contact of the first circuit and the closing contact of the second relay, and the second roar-starter starter is connected to the power circuit via the gate - pny contact of the first relay and the third relay make contact. Faa.1 21 eleven sixteen 9 M Hi 1b 9 16 12 P 18 nineteen