CN87207012U

CN87207012U - Electrosparking impactor

Info

Publication number: CN87207012U
Application number: CN 87207012
Authority: CN
Inventors: 周关荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-04-29
Filing date: 1987-04-29
Publication date: 1987-12-30

Abstract

The utility model discloses an improved plastic surface electrical spark processing device, which adopts a directly rectifying controllable voltage stabilizer. The utility model has the advantages of energy saving, light weight, low cost, high stability and high reliability. With an automatic control excitation signal source, an inverter can be closed instantly during overcurrent, and automatic smooth restoration can be performed immediately, simplifying the operation.

Description

Electrosparking impactor

The utility model belongs to frosting especially for polyethylene, polyacrylic film electric spark on surface treatment facility.

It is that exchange way is transformed into high-frequency and high-voltage with the I frequency power by dc inversion again that the electric spark shock machine adopts AC rectification to become direct current, by the electrion of arc-spark stand, the frosting of walking between electrode is handled.In existing equipment, AC rectification becomes direct current component pressure regulator voltage regulating rectifier and controllable silicon phase-shift voltage regulating dual mode, and the variation of input supply voltage directly influences the size of power output, poor work stability.In existing equipment, automatic air-break switch is all adopted in the overcurrent protection of inverter, must start shooting again after the overcurrent action, frosting is handled for the moment paused, and influences product quality, makes troublesome poeration.

The purpose of this utility model is the continuity that improves the job stability of electric spark shock machine and guarantee technique for treating plastic surface.

The utility model is to realize like this.1, adopts bipolarity D.C. regulated power supply part 2 to supply with converter main circuit 5, saved power transformer, alleviated weight, reduced cost, improved the complete machine job stability.2, adopt control exciting signal source part 4 automatically, moment is closed inverter when making the complete machine overcurrent, and the unlatching of automatic steady immediately, has guaranteed the continuity of technique for treating plastic surface, has simplified operation.

The electric spark shock machine that the utility model proposes can be guaranteed complete machine stability and handle the continuity of managing frosting technology.

Description of drawings:

Fig. 1: electric spark shock machine theory diagram.The electric spark shock machine is formed its main machine structure principle by main frame and electrion processing frame 6: shelve an insulation board on the aluminium section bar in centre position, cabinet both sides cabinet is divided into levels two parts, the upper strata bottom parts is equipped with four wiring board sockets, automatically control the current sampler in the exciting signal source part 4, automatically control electronic switch and D.C. regulated power supply are assembled on the wiring board, signal generator and pumping signal form device and are assembled on another piece wiring board, and all are installed on four wiring board sockets of upper strata base plate by the fore-and-aft direction arrangement with two converter main circuit 5 wiring boards that are respectively independent a group.High-tension transformer in the converter main circuit 5 is positioned at the rear portion of lower floor's base plate, and main frame is exported by drawing on the back poly (methyl methacrylate) plate.Power supply input 1 is positioned on the panel of main frame.Feeder line wave filter in the bipolarity D.C. regulated power supply part 2, the half-controlling bridged rectifier device, the dividing potential drop follower is installed in the first half of lower floor's base plate respectively, given voltage, feedback voltage, phase-shift trigger circuit are assembled on the wiring board, also are installed on lower floor's base plate.Auxiliary transformer 3 is directly fixedly on lower floor's base plate.Its power supply input 1 adds to the half-controlling bridged rectifier device through the feeder line wave filter, half-controlling bridged rectifier device triggering signal is supplied with by phase-shift trigger circuit, the angle of flow of triggering signal has given voltage and feedback voltage to control jointly, and the output of half-controlling bridged rectifier device is through dividing potential drop follower output bipolarity D.C. regulated power supply.The signal supply incentive shaping unit that signal generator produces, its signal has or not the control that is subjected to control automatically electronic switch, controls electronic switch automatically and is controlled by current sampler, and pumping signal forms device and signal generator is powered by D.C. regulated power supply.

Fig. 2: electric spark shock machine electrical schematic diagram

A, bipolarity D.C. regulated power supply part 2 circuit, wherein feedback voltage is by R ₃, W ₂, R ₄And C ₆Form feedback voltage V _fBy W ₂Moving point takes out V _fWith given voltage V _gAffact R after superimposed ₁₄With C ₅On the integrating circuit of forming, C ₆Be connected on W ₂Moving point and BG ₁Between the base stage.

B, control exciting signal source part 4 circuit automatically, wherein control electronic switch automatically by SCR ₂, R ₂₄, R ₂₅, R ₂₆, W ₇, DW ₅The bridge-type of forming detects circuits for triggering and constitutes.SCR ₂Be connected to C ₁₂Two ends, directly the control signal generator has no pulse output.

Enforcement of the present utility model:

With reference to figure 2, power supply is imported one the road and is supplied with auxiliary transformer B ₁, another road feeder line wave filter is added to the half-controlling bridged rectifier device, by C ₁And C ₂Dividing potential drop is exported positive and negative two road constant voltage dc sources, supplies with converter main circuit, and the generation high-frequency and high-voltage is delivered on the electrion processing frame 6 and handled frosting.B ₁Secondary 50V electric current through rectification at DW ₁Two ends output synchronizing voltage is supplied with BG ₁, BG ₂, BG ₃The phase-shift trigger circuit of forming.B ₁Secondary 20V power supply is through DW ₂, DW ₃After the secondary voltage stabilizing, at W ₁Moving point obtains given voltage V _g, it and W ₂The feedback voltage V that moving point obtains _fThe stack back is as BG ₁Control signal because R ₁₄With C ₅The integrating circuit effect, the surge current when having avoided start is again because of having added C ₆As quick feedback element, eliminated complete machine work out-of-control phenomenon may take place, guaranteed the reliability of complete machine work.Change given voltage V _g, just can obtain required voltage output, cooperate and adjust W ₂With W ₃, the maximum output voltage value of just adjusting and voltage stabilizing sensitivity.Its voltage stabilizing control is as follows: the variation of output voltage will make V _fAlso and then change, cause BG ₁The lifting of base potential changes SCR by phase-shift trigger circuit ₁The angle of flow, thereby output voltage is stablized.Because C ₆Be connected to W ₂Moving point and BG ₁Between the base stage, it is slow relatively that it rises output voltage, but when output voltage surpassed setting value, making again descends accelerated relatively.

By integrated circuit CW ₃₅₂₄The signal generator that constitutes, its pulse frequency is by W ₅Adjust.Adjust W ₇, can obtain the inverter major loop current limliting working value that needs.Integrated circuit CW ₃₅₂₄The 11st is added to BG respectively with signal that the 14th pin is exported different sequential ₈With BG ₇Form device Deng the pumping signal that constitutes, the control inverter main circuit produces high-frequency and high-voltage, supplies with electrion and handles frame 6.The peak value over-current signal of converter main circuit is by being connected in inverter power supply current in loop sampler B ₃Add to automatic control electronic switch.When moment during overcurrent, SCR ₂The conducting that is triggered makes integrated circuit CW ₃₅₂₄The crus secunda current potential drops to zero rapidly, and the output pulse is closed, and inverter current is zero at once, meanwhile, and C ₁₂Both end voltage discharges into can not keep SCR ₂SCR when continuing conducting ₂Close integrated circuit CW ₃₅₂₄5V voltage is through R on the 16th pin ₂₀, W ₆, R ₂₂Give C ₁₂Charging, crus secunda current potential are risen, and output pulse width is corresponding to the setting value broadening, the inverter state of also resuming work simultaneously, thus guaranteed the continuity of complete machine work.

Claims

1, a kind of frosting that is used for is especially for polyethylene polyacrylic film surface-treated electric spark shock machine, mainly contain power supply input 1, bipolarity D.C. regulated power supply part 2 has the feeder line wave filter, the half-controlling bridged rectifier device, the dividing potential drop follower, phase-shift trigger circuit, given voltage and feedback voltage are formed, auxiliary transformer 3, controlling exciting signal source part 4 automatically has D.C. regulated power supply, signal generator, pumping signal forms device, power supply sampler and automatic control electronic switch are formed, and main frame that converter main circuit 5 is formed and electrion are handled frame 6 compositions, it is characterized in that:

Feedback voltage in a, the bipolarity D.C. regulated power supply part 2 is by R ₃, W ₂, R ₄And C ₆Form feedback voltage V _fBy W ₂Moving point takes out V _fWith given voltage V _gAffact R after superimposed ₁₄With C ₅On the integrating circuit of forming, C ₆Be connected on W ₂Moving point and BG ₁Between the base stage,

B, control automatic control electronic switch in the exciting signal source part 4 by SCR automatically ₂R ₂₄, R ₂₅, R ₂₆, W ₇, DW ₅The bridge-type of forming detects circuits for triggering, SCR ₂Be connected to C ₁₂Two ends.