CN2243081Y - Device for monitoring break of knock-out harmmer of diamond press - Google Patents

Abstract

The utility model provides a device for monitoring break of knock-out hammer of diamond press. Each cushion of six knock-out hammers outside a compound cavity of the device is provided with a hollow installing body, and the inside of the cavity is provided with an ultrasonic waves transducing sensor which transforms the detected break signals to electrical signals; through the magnifying, filtration, detection, comparison, and signal processing, the monitor can do audible and visual alarm and indicate the fault position and shut down by self control; combined by ultrasonic sounding and electronic technology, the monitor can monitor the operating condition of the knock-out hammer automatically; solving the backward conditions of the fault judged by human auditory in the course of the production. The utility model which especially applies to the usage of artificial diamond production industry can eliminate the hidden risk of accident to prevent the explosion of the knock-out hammer and to provide safety, increase production efficiency, and reduce maintenance cost.

Description

Diamond press top hammer fracture watch-dog

The utility model relates to the ultrasonic wave transducer Detection Techniques, specifically a kind of diamond press top hammer fracture watch-dog.

Now, produce in the industry of man-made diamond, its production technology is that carbon plate, catalyst are placed in the synthetic cavity of man-made diamond pressing machine, by press pressurize, heat treated, make carbon plate synthesis of artificial diamond under high temperature, condition of high voltage.Synthesis pressure in the cavity is 100-110MPa, about 1000 ℃ of temperature.Source pressure is in the hydraulic system of press, and pressure direction is upper and lower, six pressurizations in front, rear, left and right, and what directly transmit pressure is six top hammers that wimet is made.Because the top hammer is under high temperature, the high pressure conditions for a long time, after use a period of time, the destructive fracture of fatigability fracture or super-strength can take place.In time do not found if the top hammer of fracture takes place, in time changed, worked on, comminuted fracture will be taken place.Owing to be in high-temperature high-pressure state in the synthetic cavity of man-made diamond, when comminuted fracture takes place the top hammer, produce blast, be commonly called as " blowing out "." blowing out " accident of generation can be damaged other top, position hammer and parts simultaneously, even causes personal injury.Judge whether the top hammer will soon rupture, and be the practical experience that relies on the operator at present, mainly be judged with the sense of hearing, as hear fracture sound hard stop.But, if top hammer slowly during fracture sound too small, neighbourhood noise is big or operator's experience is abundant, and " blowing out " accident all may take place.The instrument that can monitor diamond press top hammer crack conditions has not yet to see.

The purpose of this utility model provides a kind of diamond press top hammer fracture watch-dog, and whether it can differentiate press top hammer and rupture, and shuts down with regard to automatic control in case crack conditions takes place, and prevents that explosion accident from taking place, and guarantees safety in production.

In order to achieve the above object; the utility model is achieved in that this watch-dog comprises press top hammer and chilled water fixing body; it is characterized in that; it also comprises: six passage ultrasonic wave transducer sensors; before being installed in respectively; after; a left side; right; on; each top is hammered into shape in the mount pad of chilled water fixing body upper end on big cushion block down; make to transmit medium by the air in the cavity and come received ultrasonic signal; the signal output part of each sensor is connected with the input end of a prime amplifier separately; the output terminal of prime amplifier is connected with the input end of a bandpass filter; the output terminal of bandpass filter is connected with the input end of an intermediate amplifier; the output terminal of intermediate amplifier is connected with the input end of a linear envelope detector; the output terminal of linear envelope detector is connected with the negative input of a differentiation level comparator; each output terminal of differentiating level comparator connects one three end respectively and imports the AN1 of three OR-gates～AN6 mouth; the output terminal of three OR-gates in order with the address wire A0 of microprocessor; A1; the A2 mouth is connected; 6 input ends of a fault detector and 6 input ends of a single OR-gate then are connected on the corresponding output interface Q1～Q6 of microprocessor; the input end of a shutdown controller and an audible-visual annunciator is attempted by on the positive output end of single OR-gate, and one group just; negative stabilized voltage supply is to described each circuit supply.

The utility model has the advantages that: " blowing out " accident that 1, can prevent takes place, and guarantees production safety; 2, failure judgement promptly and accurately, accuracy reaches 95%, judging with the sense of hearing that top hammer crack conditions is shut down to taking measures usually needed for 5～10 seconds approximately, with this watch-dog monitoring, one has crack conditions to take place, auto stop immediately in the 10ms, can in time control fracture defect and worsen, eliminate accident potential; 3, can eliminate the biotonus of operator, reduce labor intensity, raise labour productivity because of worrying to have an accident; 4, can save maintenance cost, reduce production costs.

Fig. 1 is the sensor of this watch-dog and the structural representation of fixing body part.

Fig. 2 is the structural representation of host machine part.

Fig. 3 principle of work block diagram.

Fig. 4 is the ultrasonic wave transducer sensor and the prime amplifier part of circuit diagram.

Fig. 5 is bandpass filter, intermediate amplifier, linear envelope detector and the differentiation level comparator part of circuit diagram.

Fig. 6 is the signal Processing and the indicating fault part of circuit diagram.

Fig. 7 is the shutdown controller and the audible-visual annunciator part of circuit diagram.

Fig. 8 is the stabilized voltage supply part of circuit diagram.

Below in conjunction with accompanying drawing the utility model is done to describe in further detail.

In Fig. 1, the 13rd, the big cushion block of man-made diamond pressing machine top hammer, fixing body 2 is welded on the big cushion block 13, because monitored body surface has the high temperature about 140 ℃, being provided with cooling water pipeline 3 flowing water cools, in addition, have 12V voltage on the conduction hammer of press, electric current about 100A, also have certain magnetic field and greasy dirt, can exert an influence detection, so, the ultrasonic wave transducer sensor can not directly contact with monitored object, it is placed in the mount pad above the cooling water pipe, do to transmit medium, got rid of the interference of external environmental condition by the air in the cavity.The 4th, radome, the 5th, the resonance piece of sensor, the 6th, driver, the 7th, fixed mount, the 8th, base plate, the 9th, the printed circuit board (PCB) of preposition amplifier section, the 10th, the gib screw of circuit board, the 11st, shell, the 12nd, transmission line.

Fig. 2 is the structural representation of host machine part.The 16th, cabinet, malfunction indicator lamp 21 is housed on its front panel, one row has 6, before representing respectively and indicating diamond press, after, about, on, each pushes up the fault of hammer down, for example from left to right first pilot lamp is bright, illustrates that fault has appearred in sinciput hammer, followingly analogizes, the 20th, power switch, the 19th, manual reset switch is used for zero clearing, and the 18th, automatically, manually switch is switched in control, the 17th, loudspeaker switch, the 15th, the transmission line socket is used for main frame is connected with sensor, and the 14th, control the binding post of exporting automatically, the 22nd, the wiring board of power unit, the 23rd, power supply box, the 24th, the host circuit elements and parts board is installed, the 25th, the gib screw of circuit board, the 26th, chassis lid, the 27th, the gib screw of chassis lid.

Fig. 3 is the principle of work block diagram.Moment before fracture is taking place monitored diamond press top hammer; can launch the ultrasound wave (shown in the double-head arrow) of uV～mv order of magnitude; this signal is received by the ultrasonic wave transducer sensor; and after converting electric signal to and sending into prime amplifier signal is amplified; through bandpass filter filtering mechanical noise and low-frequency interference signal; sending into intermediate amplifier then does further to amplify; the signal that has amplified detects useful signal by linear envelope detector; the sawtooth signal that outbound course is constant compares to differentiating level comparator; convert square wave output to by comparer; after sending into signal processing circuit processing affirmation; give fault detector by signal processor with the signal branch; shut down controller and audible-visual annunciator, thereby finish indicating fault; automatic control shutdown and sound and light alarm task.

Fig. 4 is the ultrasonic wave transducer sensor and the prime amplifier part of circuit diagram.Ultrasonic wave transducer sensor T1 is connected the positive input of prime amplifier A1 as seen from the figure, and the frequency range of T1 is 30KHZ～100KHZ.Prime amplifier is made of A1, V1, V2 and peripheral cell C1～C5, R1～R10, wherein C1 is a filter capacitor, being used for filtering disturbs from the stray electrical that power supply comes, R1～R3 forms bleeder circuit, the operating voltage that is added in the T1 two ends with assurance is about 7V, R5 is a feedback resistance, adjust it and can change the gain of A1, C4 is a coupling capacitance, R6, R7 are the biasing resistors of V1, and C4 and R7 constitute the single order Hi-pass filter simultaneously, and lower-cut-off frequency is 28.4KHZ, with the filtering mechanical noise, a point on the V2 collector.Be the output terminal of signal, it is connected with a point among Fig. 5.

Fig. 5 is bandpass filter, intermediate amplifier, linear envelope detector and the differentiation level comparator part of circuit diagram.Bandpass filter is made of R11, R12, C6, C7, and its band connection frequency is 28.4KHZ＜f＜102KHZ.Intermediate amplifier is made of A2 and peripheral cell R13～R17, C8, the gain of putting during adjustment R17 can change, and L1 is the High frequency filter inductance, C9, C10 are respectively the filter capacitors of positive and negative power supply.Linear envelope detector is made of VD1, A3, R18～R20 and integrating capacitor C11, and L2 is a filter inductance, and C12, C13 are respectively the filter capacitors of positive and negative power supply.Differentiate level comparator and be made of A4 and peripheral cell VD2～VD4, R21～R27, C14, C15, C18, L3 is a filter inductance, and C16, C17 are respectively the filter capacitors of positive and negative power supply, and AN1 is a signal output part.To have six passages from ultrasonic wave transducer sensor～differentiation level comparator one, because circuit structure is identical, in order saving space, only to provide the circuit of a passage among the figure, the output interface of these six passages is connected with AN1～AN6 mouth among Fig. 6 respectively.

Fig. 6 is the signal Processing and the indicating fault part of circuit diagram.Signal processor is by microprocessor D2; (using model to be MC14599); three input ends three or door D1; their output terminal connects the address wire A0 of D2 respectively; A1; A2; input end or door D3; not gate D4 and peripheral cell R28～R32; R19～C22 constitutes; wherein C20 and R30 form the clear circuit that automatically resets; VB is the hand-reset reset button, R40; V3; R33; the duty that VD5 constitutes signal processor monitors that VD5 is bright during operate as normal; AN1～AN6 is the letter input interface that each passage of front comes, and the b point is the output terminal that the harmony visual alarm is shut down in automatic control.Fault detector is by V4～V9, R34～R46 and light emitting diode VD6～D11 forms the indicating fault of six monitored object (corresponding with top, the front, back, left, right, up, down hammer of diamond press), 6 input end I1～I6 of their input end and single or door D3 together, corresponding respectively being connected on output port Q1～Q6 of D2, Q1～Q6 is corresponding one by one with AN1～AN6, when some the breaking down in six targets, corresponding light emitting diode is bright, or door D3 has output, be that the b point has output, this point is connected with the b point of Fig. 7.

Fig. 7 is the automatic control shutdown and the sound and light alarm part of circuit diagram.Automatic control is shut down and is made of Sheffer stroke gate D6, phase inverter D5, D7, switch triode V10, relay K, diode VD13, VD13 resistance R 47, R48 capacitor C 23; wherein R47 and C23 form delay trigger circuit; be used for making the D6 output low level when fault-signal enters Sheffer stroke gate D6 moment from the b point; provide the turn-on bias electric current to switching tube, the relay adhesive through phase inverter D7 is anti-phase.After the trigger pip, C23 discharges by D5, and biasing disappears thereupon, and relay K restPoses.VD14 prevents reverse breakdown protection diode, in order to protection V10.S1 is automatic and manual selector switch, and VD13 and R49 form automatic control halt circuit relay indicating light.Sound and light alarm is by D9, D10, V12～V16, A5, VD16, C26～C29, R53～R60 and loudspeaker BL constitute, L4 and C24, C25 are the filter inductance and the electric capacity of power supply, V14, V15 form monostable multi resonant audio frequency oscillator, constantly trigger the reset terminal MR of A5 by V16, make and then vibration and promote loudspeaker BL of A5 by A5.VD16 is the light warning diode with the oscillator frequency flash of light.D9, D10 and V12, V13 form electronic switch, the control sound and light alarm, and electronic switch is controlled by the signal that the b point comes.S2 is the manual on-off switch of control BL sounding.D8, V11, VD15, R50～R51 forms the alarm monitoring indication, and during the system operate as normal, VD15 is bright, in case break down, the VD15 breath goes out.The b point is the common input end of automatic control shutdown and sound light alarming circuit.

Fig. 8 is the stabilized voltage supply part of circuit diagram.It is made up of anti-jamming circuit, transformer, bridge rectifier, capacitor filtering and three-terminal voltage-stabilizing integrated package, L5, L6, C30～C36, formation anti-jamming circuit, T2 is a step-down transformer, VR1, VR2 are bridge rectifiers, L7～L9 is a filter inductance, C38～C44 is a filter capacitor, and IC1～IC3 is the three-terminal voltage-stabilizing source.This is common typical stabilized voltage supply, and it provides stable positive and negative dc supply to entire circuit, and wherein IC3 carries+the 5V power supply, and IC1 provides+the 12V power supply, and IC2 provides negative 12V power supply.

The course of work of entire circuit is: energized, the D2 automatic clear, circuit is ready, when monitored object just often, each pilot lamp of fault detector does not all work, sound light alarming circuit is not worked yet.Some tops in six top hammers of monitored diamond press are for example hammered into shape, and the sinciput hammer breaks down, moment before fracture takes place, launch ultrasound wave, this signal is received by the T1 among Fig. 4 by the fixing body cavity, and be converted to the positive input terminal that electric signal is sent into A1, signal amplifies through A1, behind single order Hi-pass filter C4 and R7 filtering mechanical noise, pass through V1, the V2 amplification is exported from a point, enter by R11C6 through Fig. 5 a point, C7, the bandpass filter that R14 forms, filtering is higher than 100KHZ and is lower than the various undesired signals of 30KHZ, sending into intermediate amplifier A2 again does further to amplify, the signal that has amplified is exported from A2, carry out the envelope detection by VD1, again after A3 carries out Integral Processing with signal, obtain unidirectional approximate sawtooth wave, pass through VD2, R21 enters the negative input end of differentiating comparer A4, after comparing with the differentiation level, A4 exports square wave through VD3 by A4, R26 exports from AN1, deliver to the AN1 input end of the D1 in the microprocessor among Fig. 6, microprocessor D2 has used the MC14599 integrated package, its data terminal D and read-write control end W/R connect+the 5V power supply through resistance R 28, be placed in high level, therefore this circuit is set to " only writing " pattern, promptly the latch from data terminal toward the address appointment send number, because the D end connects high level all the time, can only be effective for high level so write the data of latch.Forbid holding WD and sheet choosing end to be subjected to or the positive output end of door D3 is controlled, address wire A0, A1, A2 are controlled by three output terminals of three inputs, three OR-gate D1, six output terminals of the differentiation comparer of six passages respectively with three the input three OR-gates the corresponding connection of six input end AN1～N6, AN1～AN6 is corresponding with the Q1～Q6 of D2 output terminal, formed the binary address coding circuit, each passage corresponding address sign indicating number is as follows:

A0＝AN1+AN3+AN5

A1＝AN2+AN3+AN6

A2＝AN4+AN5+AN6

Like this, when high level appears in the input end AN road of D1, corresponding address code input must be arranged, when for example AN1 is " 1 ", with AN1 substitution following formula: A0=1, A1=0, A2=0, its address code is A2, A1, A0=001 from a high position to the low level, must have the high level of data terminal D to be locked Q1, i.e. Q1=" 1 ".This signal divides two-way output from Q1, and one the tunnel sends into the fault detector corresponding input end through R46, makes the V9 conducting, and it is luminous to drive D10; The target that indicates the AN1 channel monitoring breaks down; the respective input I1 of D3 is sent on another road; D3 is output as " 1 "; this signal is delivered to the b point of Fig. 7 from the b point output of Fig. 6; also divide two-way; one the tunnel through D9; D10 drives electronic switch V12; the V13 conducting starts audible-visual annunciator work, and this moment, loudspeaker sent chimes of doom; light emitting diode VD16 flashes with oscillation frequency; Sheffer stroke gate D6 is sent on another road, through D7; R48; VD12 triggers the V10 conducting, relay K action auto stop; after this C18 is through R47; the D5 discharge; the relay recovery original state, thus indicating fault finished, automatic control shutdown and sound and light alarm task.The course of work of other passage is just the same, and what distinguished is the address code difference that writes, and promptly after certain AN has energizing signal, corresponding Q output is arranged then, and the rest may be inferred by analogy for it.

In order to guarantee in six of the diamond press top hammers behind the top in certain orientation hammer generation fracture defect, have only the latch of this passage correspondence that output is arranged, be not subjected to behind other passage to have used sheet choosing end CE and to have forbidden holding WD to realize that the D end suspends to the blockade of data input to the influence of signal, its detailed process is as follows: after D2 resets, Q1～Q6 all is reset to " 0 ", D3 is output as " 0 ", and WD is " 0 ", and D4 is output as " 1 ", CE is " 1 ", the selected permission write state of circuit; After certain AN was high level, the corresponding device Q that is locked in had output, so D3 is output as " 1 ", and WD is " 1 ", D4 is output as " 0 ", and CE is " 0 ", and circuit is not selected, be in the write state that is under an embargo, thereby blocked data input (D end floating empty), after making to other signal can not enter.This has just guaranteed the uniqueness that channel signal of that top hammer of generation fracture defect in the monitored top hammer can enter, and other signal that arrives thereafter is inoperative.

Claims (2)

1; a kind of diamond press top hammer fracture watch-dog; it comprises; press top hammer and chilled water fixing body; it is characterized in that; it also comprises: six passage ultrasonic wave transducer sensors; before being installed in respectively; after; a left side; right; on; each top hammer big cushion block (13) is gone up in the mount pad of chilled water fixing body (2) upper end down; make to transmit medium by the air in the cavity and come received ultrasonic signal; establish radome (4) in the cavity; resonance piece (5) and driver (6); the signal output part of each sensor is connected with the input end of a prime amplifier separately; the output terminal of prime amplifier is connected with the input end of a bandpass filter; the output terminal of bandpass filter is connected with the input end of an intermediate amplifier; the output terminal of intermediate amplifier is connected with the input end of a linear envelope detector; the output terminal of linear envelope detector is connected with the negative input of a differentiation level comparator; each output terminal of differentiating level comparator connects one three end respectively and imports the AN1 of three OR-gates～AN6 mouth; the output terminal of three OR-gates in order with the address wire A0 of microprocessor; A1; the A2 mouth is connected; 6 input ends of a fault detector and 5 input ends of a single OR-gate then are connected on the corresponding output interface Q1～Q6 of microprocessor; the input end of a shutdown controller and an audible-visual annunciator is attempted by on the positive output end of single OR-gate, and one group just; negative stabilized voltage supply is to described each circuit supply.

2, according to the described diamond press of claim 1 top hammer fracture watch-dog, it is characterized in that: the positive input terminal of its prime amplifier A1 is connected with the output terminal of ultrasonic wave transducer sensing T1, the a point of the output terminal transistor V2 collector of prime amplifier is connected with the input end R11 of bandpass filter, the output terminal C6 of bandpass filter is connected with the positive input terminal of intermediate amplifier A2 by R15, the output terminal of intermediate amplifier A2 is connected with linear envelope detector input end crystal diode VD1 anode, the A3 output terminal of linear envelope detector is connected with the negative terminal of the crystal diode VD2 that differentiates the level comparator input end, differentiate the output termination AN mouth of level comparator, playing the output terminal of differentiating level comparator from the ultrasonic wave transducer sensor ends one and has the identical LIULUTONG road independently separately of six circuit, top hammer of each path monitoring, the output interface of differentiating level comparator is respectively AN1-AN6.

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