CN200944568Y - Reversing arrangement for numerical control wire cutting machine approach switch type bidirectional thyristor motor - Google Patents

Abstract

A closing switch type double-direction controllable silicon electric motor switch apparatus for numerical control line incision machine tool, which is provided with functions of driving thread canister electric motor, switching direction, protection of thread canister offside and cutting off high frequency by switching. The apparatus integrates the main circuit devices into a print circuit board, and adopts plug type input/output connection to connected three external closing switches and forms the closing switch type double-direction controllable silicon electric motor switch apparatus for line incision machine tool. With an integrated circuit closing switch and double-direction controllable silicon electronic line, the apparatus is of no contact, no wear, no switch spark and no noise in switching, thereby reducing faults. The plug type circuit connection is convenient for repair and reduces volume.

Description

Nc wire-cutting is near switching mode bidirectional triode thyristor motor commutation device

Affiliated technical field

The utility model relates to the electronic reformation of commutation of numerically controlled wire cutting machine wire feed silk tube and drive circuit, make traditional commutation of collision laminated type travel switch and power on/off magnetic relay circuit-mode, change into integrated higher-order of oscillation type near switch, pass through circuit conversion, the control bidirectional triode thyristor directly drives the electric device that wire cylinder motor commutates.

Background technology

The existing numerically controlled wire cutting machine of China, break, stop high intensity light source when its tube driving, reversing arrangement and commutation, adopt dissimilar travel switches (as the JW2-11/3 type mostly, LXW5-11Q, JW211H/L type etc.) cooperate A.C. contactor (also have part to adopt and cooperate bidirectional triode thyristor) to form the commutation control circuit, need to cut off the problem of high frequency electric source during its commutation.All adopt the way of establishing the broken height frequency circuit in addition to finish, the existing existing shortcoming of reversing arrangement is:

One: existing travel switch is for the contact-impact laminated type is arranged, and is often serious because of abrasion under frequent operating state, causes travel switch damage, malfunctioning.

Two: the operative employee is when adjusting the commutation briquetting, and because of operant level differs, the feel weight differs, and causes the pressing degree of depth to differ, and is often improper because of adjusting, and influences the travel switch life-span.

Three: A.C. contactor easily causes mechanical abrasion, stuck in frequent commutation process, because of commutation spark causes contact oxidation, sticks and pull-in winding such as burns at apparatus failure, and simultaneously frequent adhesive meeting produces the adhesive noise.

Four: declared at present utility model, the patent No. and be 20062003170.8 direction selecting controller and only related to commutation and the function of the direct drive motors of bidirectional triode thyristor of no use.

Summary of the invention

The technical scheme that the utility model adopted is: with four miniature relays; four bidirectional triode thyristors and protection loop thereof and direct current regulation circuit organically are combined on the printed circuit board (PCB); and with the collocation of several groups of plug-in input/output interface lines, form modular circuit board.This circuit board links to each other near switch with three LJ12A3-2-Z/BX types and afterwards constitutes this reversing arrangement.

The utlity model has control and finish the contactless commutation of numerically controlled wire cutting machine silk tube, directly drive the function of wire cylinder motor.And has a silk tube limiting protection, a commutation broken height function frequently.

The beneficial effect of this utility model is:

One:, overcome the easy abrasion of existing collision laminated type travel switch, flimsy defect owing to adopted integrated circuit near switch.

Two:, increased the stability of electrical equipment owing to adopted ripe integrated electronic device.

Three: because the commutation major loop has adopted bidirectional triode thyristor to substitute A.C. contactor, avoided the existing disadvantage of use A.C. contactor, avoided commutation spark. the commutation noise.

Four:, reduced maintenance cost because of failure rate is low.

Five:, made things convenient for maintenance owing to adopt the plug-in modular circuit.

Six:, reduced the electrical equipment volume owing to commutation, driving concentrate on the plate.

Description of drawings

Below in conjunction with drawings and Examples, the utility model is further specified;

Figure one is an electrical schematic diagram of the present utility model;

Figure two is the printed circuit board component layout of first embodiment of the utility model;

Figure three be second embodiment of the utility model near the switch scheme of installation;

Figure four be the 3rd embodiment of the utility model near the switch scheme of installation.

Embodiment

In figure one, 15, No. 16 terminals are the two-phase input (another phase factor does not participate in commutation, directly connect motor and do not indicate in the drawings) in 220 volts of power supplies of wire cylinder motor three-phase.

13, No. 14 terminals are the output of the two-phase after control (connecing motor).

17, No. 18 terminals generally connect 24 volts of alternating current sources for the output of control circuit power supply, at this moment, 1W, 12 volts of voltage-stabiliser tubes, short circuit need not.When supply voltage is when exchanging 36 volts, can be connected in series this voltage-stabiliser tube and current-limiting resistance.

11, No. 12 terminals are for providing 24 volts of dc supplies near switch JJ1, JJ2, JJ3, and 11 ends are+24 volts, and 12 ends are this power supply ground end.

1,7, No. 10 terminals are respectively the output line near switch JJ1, JJ2, JJ3.Link with the coil of relay J 1, J2, J3.

3, No. 4 terminals are serially connected in the high frequency electric source control loop, and broken height frequently when being used to commutate.

8, No. 9 terminals are serially connected in the lathe master control loop, are used for silk tube limiting protection.

J0 is the relay that is used to control the bidirectional triode thyristor commutation.

The operation principle of whole commutating circuit is:

After sending electricity, J0 not near JJ1, JJ2 or near the JJ1 state time does not inhale when reversible deflector, its normally-closed contact conducting, controllable silicon BT2, BT4 conducting cause No. 16 lines to connect No. 14 lines, No. 15 line is connected No. 13 lines, wire cylinder motor is rotated to a side, when operation causes stroke dog near JJ2, the J2 conducting, 5, No. 6 lines are connected.The J0 adhesive also keeps its normally-closed contact to disconnect, the normally opened contact closure, and then BT2, BT4 end BT1, BT3 conducting, 14-15 line and the conducting of 13-16 line, the anti-phase running of motor.When silk tube block moves to J1, the J1 adhesive, its normally-closed contact makes the J0 outage, and then gets back to the initial launch state again, and work so goes round and begins again.

In when commutation, promptly when JJ1 or JJ2 work, J1 or J2 adhesive, cuts off 3, No. 4 line loop, and then finished the function of cut-out high frequency electric source.

At the lathe commutation failure, silk tube fault appears when offside, and the commutation block makes the J3 adhesive, and then breaks line loop 8, No. 9 just near JJ3, makes the outage of going the same way of whole Machine-Tool Control, brakes, and has finished the limiting protection function.

In figure two illustrated embodiments, ZJ1,2,3,4 is the plug-in interface, J0-J3 is the HH54P direct current relay, and BT1-BT4 is a BTA41-700B type bidirectional triode thyristor, and C1-C4 is the 0.1MF/630V electric capacity of the dacron, R1-R4 is 2W, 100 Ω metalfilmresistors, R5-R8 is 2W, 300 Ω metalfilmresistors, and F1-F3 is for being the molten electrical equipment of glass tube, and 7824 is 24 Fu Sanduanwenyayuan, C is a 1000MF/63V electrolytic dissolution device, and used diode is IN4007.

Execute in the example shown in the figure three,

(1) A, it is measure-alike that machine tool travel switch mounting panel is joined by B and institute; Hole a, b, c, d with joining the lathe installing hole corresponding.

(2) C, D should adapt with the former travel switch installing hole of joined lathe, and every in principle limit should be less than more than the former installing hole size 5mm, in order to installation.

Its centre-to-centre spacing of sieve hole of (3) three M12 * 1 is 〉=equilateral triangle of 25mm.

Sieve hole of (4) two M3 is that model is fixedly sieve hole of X5-1005 binding post or similar small-sized binding post.

(5) the mounting panel material is general polyethylene plastic plate, also can use epoxy plate, metal etc.

In figure four illustrated embodiments ,+,-be positive-negative power near switch JJ1, JJ2, JJ3.J1, J2, J3 are the output of JJ1, JJ2, JJ3.J1, J2, J3 ,+,-link with 1,7,10,11, No. 12 terminals of figure two printed panel interfaces respectively.

Claims (1)

1, a kind of nc wire-cutting is near switching mode bidirectional triode thyristor motor commutation device, and it is characterized in that: printed circuit board (PCB) is provided with relay J ₀, J ₁, J ₂, J ₃, relay J ₁, J ₂, J ₃With near switch JJ ₁, JJ ₂, JJ ₃Connect direct current regulation circuit after linking to each other, and relay J ₀Be connected with control circuit of bidirectional thyristor after connecing direct current regulation circuit, form modular circuit board, constitute the motor steering device.

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