CN2217630Y

CN2217630Y - Electronic controller for break weft

Info

Publication number: CN2217630Y
Application number: CN 94226602
Authority: CN
Inventors: 吴增根
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-20
Filing date: 1994-01-20
Publication date: 1996-01-17
Anticipated expiration: 2004-01-20

Abstract

The utility model relates to an electronic controller for break weft, which is composed of a high sensitive detection probe, a system control circuit and a DC voltage stabilized supply. The high sensitive detection probe is used for detecting whether the phenomenon of brake weft appears or not and delivering electricity singles to the system control circuit in brake weft; the system control circuit control a loom to brake and stop after receiving signals of brake weft and simultaneously delivers out light signal indication. The utility model has high reliability, long service life and no the phenomenon of weft winding, has no influence on weft tension, is not be influenced by moving lamp lights, lightens the labor intensity of maintenance man, and is suitable for various silk looms.

Description

Electronics staplings control device

The utility model relates to a kind of electronics staplings control device, and particularly a kind of electronics staplings control device that is used on the silk loom belongs to the application electric technology field.

According to preliminary search, do not find the staplings control device identical with the utility model.Silk loom staplings control device of the prior art, what generally use is traditional mechanical staplings device (i.e. " three finger palladiums " staplings device, because it is simple in structure, so continued to use for many years, but this device also exists many shortcomings, short such as: poor reliability, fault rate height, service life, especially its scope of application has certain limitation (can't install) on 2 * 2 shuttle boxs, many looms.

The purpose of this utility model provides a kind of application electric technology and realizes that it can overcome the deficiencies in the prior art to the device of loom staplings control.

Electronics staplings control device of the present utility model is characterized in that its core is made of highly sensitive detection probe and system, control circuit following two parts electronic circuit.Highly sensitive detection probe is a photoelectric switching circuit and an AC amplifier, in order to detect whether staplings of loom, in case " staplings " takes place, immediately this " incident " converted to electric signal output; System, control circuit comprises: 5 unit such as " staplings signal " input, normal danger detection, logic function and secondary drive, its function is sent " staplings signal " here according to highly sensitive detection probe, loom is controlled, make loom out of service when staplings, send the light alarm indication simultaneously.

The drawing of accompanying drawing is described as follows:

Accompanying drawing is an electronic schematic of the present utility model.

Be described in further detail below in conjunction with accompanying drawing:

Among the figure, empty frame I is highly sensitive detection probe, empty frame II be system, control circuit, Empty frame III is D.C. regulated power supply.

In the highly sensitive detection probe circuit shown in the empty frame I, resistance R ₁, R ₃, Light-Emitting Diode LED ₁, phototriode TR ₁Form photoelectric switching circuit, transistor BG ₁And the capacitance resistance ware of base stage, collector loop is typical ac amplifier circuit, R ₁Be LED ₁Current-limiting resistance, R ₂Be BG ₁Direct current biasing resistance, capacitor C ₁Be coupling capacitance, R ₄, R ₅Be BG ₁Load resistance, diode D ₁Negative pole meet BG ₁Base stage, positive pole meet BG ₁Emitter stage, D ₁With TR ₁Form C ₁Discharge loop.Only draw a highly sensitive detection probe circuit among the figure, also can adopt 2 identical highly sensitive detection probe in actual use, be connected in parallel on BG ₂Input, then two detection probe must be installed for the loom of pick-at-will.

In the system, control circuit shown in the empty frame II, PNP transistor BG ₂With capacitor C ₂, C ₃, diode D ₂, resistance R ₆～R ₁₀Be " staplings signal " input block, C ₂Be coupling capacitance, C ₃As anti-interference, R ₆Be BG ₂The base stage current-limiting resistance, D ₂Be C ₂, C ₃Discharge loop, R ₇Be BG ₂Biasing resistor, R ₁₀Be LED ₂Current-limiting resistance, R ₈, R ₉Be BG ₂Collector resistance, BG ₂The operating point be arranged on little signal magnifying state, regulate R ₉Can change its output gain, LED ₂, phototriode TR ₂, resistance R ₁₄～R ₁₆, transistor BG ₃Opto-electronic conversion, the on-off circuit formed are normal danger detecting unit, LED ₂Positive pole, TR ₂Colelctor electrode be attempted by positive source output, LED ₂Negative pole and TR ₂Emitter stage is respectively through R ₁₀, R ₁₄Connect power cathode, R ₁₅Be connected across TR ₂Emitter stage and BG ₃Base stage between, R ₁₆Be BG ₃Collector resistance; Integrated circuit flip and flop generator IC ₁, resistance R ₁₁～R ₁₃" not gate of living " circuit is by (diode D ₄, D ₅, transistor BG ₄, capacitor C ₅, resistance R ₁₇Composition) input (D of composition logic function unit (seeing Shanghai element five factories " brilliant peak device application " the 6th phase) " nor gate " ₄, D ₅Positive pole) meets IC respectively ₁Output and BG ₃Colelctor electrode, C ₄Be coupling capacitance, be connected across BG ₃Colelctor electrode and IC ₁An input (this input and " " between string a resistance R arranged ₁₃), C ₄, R ₁₃Become differential circuit, R ₁₁, R ₁₂Polyphone is connected on BG ₂Colelctor electrode.Be connected across BG ₃Colelctor electrode and R ₁₁R ₁₂Between D on the contact ₃Be case position diode, BG ₃Be arranged on off state, BG ₄Be arranged on conducting state; Capacitor C ₆, C ₇, resistance R ₁₉～R ₂₃, integrated circuit flip and flop generator IC ₂, diode D ₆, D ₇, transistor BG ₅, BG ₆, relay winding J constitute relay logic control drive circuit (see National Defense Industry Press: " Chinese integrated circuit " COMS integrated circuit), C ₆Be coupling capacitance, be serially connected in BG ₄Colelctor electrode and IC ₂R is compiled in an input ₁₉Be C ₆Discharge resistance, IC ₂Another input and " " between capacitor C ₇Be connected across IC ₂R between input, the output ₂₀, D ₆, R ₂₁Constitute charging and discharging circuit respectively, play time action, be connected in parallel on the D at relay winding J two ends ₇Be BG ₆The protection diode, BG ₅, BG ₆Be arranged on cut-off state; IC ₃, BG ₇, BG ₈, D ₈, LED ₃, C ₈, R ₂₄～R ₂₈Constitute staplings indication logic control drive circuit (IC ₃An input termination IC ₂Output), circuit is identical with above-mentioned drive circuit, repeats no more.

In the voltage-stabilized power supply shown in the empty frame III, B is transformer, D ₉, D ₁₀Be commutation diode, IC ₄, IC ₅Be 78 serial three end integrated voltage stabilizers, C ₉, C ₁₀, C ₁₁Be filter capacitor, this circuit belongs to typical full-wave rectification capacitor filtering two utmost point mu balanced circuits (seeing Shanghai element five factories " brilliant peak device application " the 3rd phase), no longer describes in detail, for entire circuit provides working power.

The inventor has made following embodiment:

Press the highly sensitive detection probe circuit shown in the empty frame I with components and parts R ₁, R ₂, R ₃, C ₁, LED ₁, TR ₁, D ₁, BG ₁, be integrated on the printed circuit board, one is formed in debugging back, is installed in the two shuttle box sides of silk loom near the selvedge place, makes parallel through LED ₁" optical axis ", the normally open contact of relay is connected to loom " suction iron coil ", LED ₂And TR ₂Form one and be installed in that both sides fan-shaped light barrier is contained on the d-axis on the loom d-axis, make it and loom synchronous operation, periodically block LED ₂To TR ₂Irradiation, and adjust light barrier and be in the light constantly and be in the light constantly with the needs of realizing many looms and shut down and go up in place prior to highly sensitive detection probe equator, avoid occurring " trapped shuttle " phenomenon.Through test, obtained satisfied effect.

Operation principle of the present utility model is as follows:

1, parallel normal condition

Connect power supply, each unit of circuit is in original state (as mentioned above) in the utility model, after the loom running, and when is in the light in the position in light barrier arrival, photosensitive tube TR ₂Because of unglazed photograph is high resistant, BG ₃End, C point current potential raises, D ₃End, C point current potential is through C ₄Be coupled to IC ₁Input makes IC ₁Output become low level, this moment D ₄, D ₅In have only D ₅High level output is arranged; The first shuttle parallel is come and is blocked LED ₁The moment of optical axis is blocked LED than light barrier ₂The moment of optical axis lags behind, and the reduction of the A of changing some current potential, BG are arranged when the parallel highly sensitive detection probe of process " optical axis " ₂Conducting, B point current potential raises, IC ₁Upset, D ₄, D ₅All export high level, BG ₄And the drive circuit state is constant; When light barrier leaves when being in the light the position TR ₂Be subjected to LED ₂Irradiation is low-resistance, BG ₃Become conducting by ending, the C point is a low level, D ₃Conducting, IC ₁Output maintains high level, BG ₄And drive circuit maintains original state; When light barrier was in the light for the second time, the C point became high level, IC once more ₁Upset, output low level, D ₃End, when the second shuttle parallel passed through, circuit operation was with preceding identical, and in the loom running, as the staplings phenomenon not occurring, the above-mentioned duty of circuit changes again and again.

2, staplings situation:

If when occurring breaking, A point current potential does not change (current potential is higher) GB ₂State is constant, IC ₁It is constant that low level is kept in output, BG ₄And drive circuit all remains stationary, and leaves LED at light barrier ₂In the moment of " optical axis ", the C point becomes low level, D once more ₄, D ₅All there is not high level output, BG ₄End, D point current potential raises, IC ₂Upset (output high level), BG ₅, BG ₆Conducting, relay winding J gets electric, and the normally open contact closure is inhaled the iron coil action, implements brake, shuts down; IC ₃Upset simultaneously, BG ₇, BG ₈Conducting, LED ₃Luminous indication.

The utility model compared with prior art, except having the reliability height, using the longevity Order length, be not subjected to outside the characteristics such as impact of weft tension, it is applied widely, not only is suitable for In single shuttle loom, and be applicable to the silk loom of many shuttles, pick-at-will.

Claims

A kind of electronics staplings control device is characterized in that it is made up of highly sensitive detection probe, system, control circuit and D.C. regulated power supply three parts, and highly sensitive detection probe (1-2) comprises a LED ₁, phototriode TR ₁, resistance R ₁, R ₃The photoelectric switching circuit of forming and a base stage input (BG ₁Base stage is through capacitor C ₁With TR ₁Colelctor electrode joins), the AC amplifier of colelctor electrode output, system, control circuit comprises " staplings signal " input, normal danger detection, logic function, driving 5 unit such as (secondarys), wherein " staplings signal " input block is by PNP transistor BG ₃And the base stage that capacitance resistance ware is formed is imported, colelctor electrode is exported little signal amplifier, and the normal danger detecting unit is a LED ₂, phototriode TR ₂, resistance R ₁₄～R ₁₆, transistor BG ₃Opto-electronic conversion, on-off circuit that (end when being in the light, otherwise conducting) formed, logic function unit is by integrated circuit flip and flop generator IC ₁, resistance R ₁₁～R ₁₃With diode D ₃, D ₄, D ₅, transistor BG ₄(original state: conducting) capacitor C ₅, resistance R ₁₇" nor gate " formed, the input (D of " nor gate " ₄, D ₅Positive pole) meets IC respectively ₁Output and BG ₃Colelctor electrode, R ₁₁, R ₁₂Be connected across IC behind the polyphone ₁Input and BG ₂Colelctor electrode, D ₃just terminate at R ₁₁, R ₁₂Between on the contact, negative terminal is connected on BG ₃Colelctor electrode on, capacitor C ₆(be serially connected in BG ₄Colelctor electrode and IC ₂An input), C ₇, resistance R ₁₉～R ₂₃, integrated circuit flip and flop generator IC ₂, diode D ₆, D ₇Transistor BG ₅, BG ₆, relay winding J constitutes one-level and drives (relay) circuit, IC ₃(input termination IC ₂Output); BG ₇, BG ₈, D ₈, LED ₃, C ₈, R ₂₄～R ₂₈Form secondary drive (staplings indication LED ₂) circuit; Voltage-stabilized power supply is by transformer B, diode D ₉, D ₁₀, three end integrated voltage stabilizer IC ₄, IC ₅, capacitor C ₉～C ₁₁The full-wave rectification capacitor filtering secondary mu balanced circuit of forming.