CN200970898Y

CN200970898Y - Middle-small size crank slider type automatic dry powder press

Info

Publication number: CN200970898Y
Application number: CN 200620126213
Authority: CN
Inventors: 张俊; 许云灿
Original assignee: NANJING EAST PRECISION MACHINERY CO Ltd
Current assignee: NANJING EAST PRECISION MACHINERY CO Ltd
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2007-11-07
Anticipated expiration: 2016-10-25

Abstract

A small and medium-sized brace sliding-block all-automatic dry-powder compressor of the utility model relates to a powder goods dry-pressed molding equipment. The utility model is a powder compressing molding equipment for the industries of powder metallurgy, cemented carbides, fine ceramics, electronic ceramics, magnetic materials, and so on. The machine contains a box unit part, a drive part, a transmission mechanism, a compression part, a die stripping part, a top compression part, an upper beam part, a material feeding part, a hopper and chute part, an excessing/lacking part. The box unit part includes a column, a box body, a box cover, a respirator, a housing, and a die pedestal. The drive part includes a motor, a small belt wheel, a big belt wheel, a conveyor belt, a clutch, a speed reducer. The transmission mechanism includes a duplex gear, a transmission shaft, a left gearwheel and a right gearwheel, an eccentricity wheel, a sliding bearing, a left connecting rod and a right connecting rod , a connecting fork, a left drawbar and a right drawbar, a rotary encoder, a left half axle, a right half axle, a center rod, a T-shaped block, a worm wheel box, and a female die replacing board. The compression part includes a main compressing beam, a concave beam, a pressing bar, a pressing cam, a pressing sliding block.

Description

Middle-size and small-size crank slide block type full automatic dry powder press

Technical field

What the middle-size and small-size crank slide block type full automatic dry powder press of the utility model related to is a kind of dry-pressing formed equipment of pulverulent product that is used for.Belong to special mechanical equipment, it is the powder pressing forming equipment of industries such as powder metallurgy, carbide alloy, fine ceramics, electronic ceramics, magnetic material, in mechanical powder compacting equipment, present is the compression molding device that belongs to middle-size and small-size in China, particularly 16 tons of full-automatic dry powder press.

Background technology

At present, driving gear in the transmission mechanism of medium and small dry powder press and power transmission shaft adopt key connecting to wear and tear easily and are difficult to accomplish that two driving gears are synchronous, can have influence on dry powder press and normally suppress work and compacted products quality.Entablature mechanism is provided with press rods, if improper use makes press rods reach plastic deformation, has influence on dry powder press and normally uses, and press rods will be changed again.The feed mechanism of present medium and small dry powder press adopts sprocket wheel, chain drive feeding, fracture can occur in the chain drive feeding process, causes mould to damage.

At present, the dish spring is generally adopted in the realization of medium and small dry powder press roof pressure, comprises external dish spring manufacturer with regard to now domestic, and the dish spring is under every day up to ten thousand times operating positions, be difficult to guarantee its coefficient of elasticity and service life, will make the roof pressure actual effect like this, cause producing waste product, bring unnecessary economic loss, and replacing dish spring bothers more, dismantle whole box body, the main beam of pressing are equivalent to the labour intensity of an overhaul, have also influenced the operate as normal progress of producer.

Summary of the invention

The utility model purpose is to provide a kind of middle-size and small-size crank slide block type full automatic dry powder press at above-mentioned weak point, the structure function design of press, advanced pressure die two-way three compact techniques that float have been adopted, machine construction is rationally advanced, the geometric accuracy height of stampings, the volume density of blank is evenly distributed, production latent qualitative good.In the press process, the realization pneumatic and roof pressure compacting mechanism that resets of die adopts hydraulic control technology to implement; Adopted the protection ejection technique for the generation of the aliquation that prevents blank and micro-flaw when the demoulding, the reinforced control of material boots is also very convenient, and this respect is controlled by pneumatics; Attach great importance in the design of press operating the safeguard protection of the person, can have the grating safety guard, overpressure protection is arranged, the powder position is detected and the die protection; The operation of press is adjusted very convenient, and various compacting parameters all can accurately quantitatively be regulated continuously, and are sequencing, are convenient to computer management.

Middle-size and small-size crank slide block type full automatic dry powder press is to take following scheme to realize:

Middle-size and small-size crank slide block type full automatic dry powder press structure comprises casing part, drive part, transmission mechanism, press portion, demoulding part, roof pressure part, entablature part, feeding part, hopper material boots part, crosses the amount of owing part.

The casing part: this part has mainly shown the general appearance of lathe.This part comprises column, casing, case lid, respirator, case, mould bases seat.Box inner structure mainly is by the decision of the parts of lathe.Case lid is contained on the casing, and case lid and casing are by being threaded.Case is contained in casing one side, and respirator is contained on the column, and two root posts install respectively in the case lid both sides, and the mould bases seat is contained on the column.Lubricating oil is housed in the casing, and the lathe height is mainly determined in order to adapt to mould bases.It is to serve as grease-box that casing also has an effect.

Drive part comprises motor, small belt pulley, big belt pulley, driving-belt, clutch, decelerator, motor mounting is on casing rear side motor mount, reductor is installed in the case of casing side, and clutch device is on the deceleration arbor, by the variable-frequency motor power output.Motor is selected 3 kilowatts of Siemens's frequency control motors for use.Transmission is passed through small belt pulley, driving-belt (V band), big belt pulley, clutch to reductor.The band transmission is that one-level is slowed down.Worm decelerating machine is a double reduction.So just improved moment of torsion greatly.Pneumatic clutch plays the protection lathe, lathe action can be in stop and two states that move, make machine be unlikely at starting state that moment of torsion is excessive to burn out three effects of motor.What deserves to be mentioned is the effect of big belt pulley.It is not only the effect that reaches deceleration as driven pulley.Can also increase the rotary inertia of lathe as flywheel.Can be the machine storage power like this.When compacted products, energy is discharged.Make lathe be unlikely to vexed car when the pressing position.

Belt tension mechanism adopts the fine setting motor mount to realize.Motor adopts the B3 mounting means.The motor installing hole is fixed on the mount pad.Motor mount then has been out two kidney slots.By the bolting motor.The motor side has two to adjust seat.Be fixed on the mount pad by screw.Adjust the screw of middle two M12 of screw-in of seat.Withstand the motor side.When needing to adjust belt.Unclamp the bolt of fixed electrical machinery earlier, screw the screw of adjusting on the seat again.Up to withstanding the position that motor reaches needs adjustment.It is just passable to screw bolt at last.This belt tension method is relatively simple for structure.Can save cost greatly.

Transmission mechanism comprises duplicate gear, power transmission shaft, left and right gear wheel, eccentric wheel, sliding bearing, left and right connecting rod, yoke, left and right pull bar, rotary encoder, left half axle, right axle shaft, center-pole, T shape piece, worm gear case, die restoring board.Power transmission shaft is contained on the casing by sliding bearing, power transmission shaft is provided with duplicate gear, power transmission shaft and duplicate gear are one, left half axle and right axle shaft are contained on the casing, sliding bearing is installed on the left and right connecting rod, eccentric wheel is contained in the sliding bearing, and two eccentric wheel endoporus match with left half axle, right axle shaft respectively, and left and right gear wheel is contained in two eccentric wheel inner shafts respectively and puts, yoke is contained in main the pressure on the beam, links to each other with connecting rod by sliding bearing.The die restoring board is equipped with in the center-pole lower end, and worm gear case is equipped with on center-pole top, and T shape piece is equipped with in the center-pole upper end.

The power transmission shaft of transmission mechanism links to each other with reducer output shaft, and power transmission shaft is provided with duplicate gear.Duplex tooth and the engagement of left and right sides gear wheel, gear wheel drives wobbler action, and eccentric wheel has been formed a slider-crank mechanism by sliding bearing, left and right sides connecting rod, yoke, left and right sides pull bar.Here eccentric eccentric distance e just is equivalent to the crank length of slider-crank mechanism, and the follower lever that links to each other with slide block is equivalent to left and right sides connecting rod, and left and right sides pull bar is equivalent to slide block.And sliding bearing is equivalent to hinge.The upper end of pull bar connects entablature.Entablature connects the upper junction plate of mould bases again, connects the upper punch of mould again.So the action of pull bar is consistent with the action of upper punch.And the other end of yoke connects is the main beam of pressing, and the action of main like this pressure beam, pull bar, entablature all is consistent.And the movement locus of the terminal slide block of slider-crank mechanism is a cosine curve over time.Like this, the movement locus of entablature, main pressure beam also is a cosine curve.If curve is 0 ° when peak, then the angle in minimum point is 180 °.Like this, the one-period of machine is 360 °.Rotary encoder apparatus is on right axle shaft, and rotary encoder apparatus is on right axle shaft, and effect is exactly to measure the residing angle of machine at any time, is convenient to Human-to-Machine's control.The left end of left half axle connects feeding cam.

Related part on the center-pole of running part: the upper end of center-pole is regulated with worm gear case and is connected by screw.The worm gear case structure is seen the E-E cutaway view, is the locking member of worm screw.The worm gear of worm engaging is a master gear.There is internal and external threads the lower end of gear, is respectively left-handed and dextrorotation.External screw thread and center-pole screw thread are joined work.Internal thread and T type piece screw thread are joined work.

What the lower end of center-pole connected is the die restoring board, and the two ends, the left and right sides of die restoring board connect two reset cylinders, the anti-bottom half that is hung in of reset cylinder with oscillating bearing.The reset cylinder here not only plays the effect that die resets, and also has an important effect to prevent the die bounce-back exactly when the pressing position.When machine run is 180 ° to the pressing position.The compacting supporting cam wheel has soon turned over the compacting slide block.And the demoulding does not also begin.Certainly, optimal method is that the compacting supporting cam wheel just turns over the compacting slide block, and meanwhile, the demoulding just begins.Problem with regard to not having a rebound like this.In fact this situation is impossible satisfy.Because when stripping stroke changes, the angle of the demoulding also changes thereupon.And the terminal point of compacting is constant all the time, even if satisfy above-mentioned situation during for 10mm in stripping stroke like this.When being 20mm, stripping stroke just can not still meet the demands.And when die has a rebound, be very disadvantageous to compression moulding.May cause part to crack, when serious even can mold damage.May produce this consequence just, just must prevent the die bounce-back in the pressing position.Usual way is to add check plate on center-pole, with the anti-bounce-back of locking button.What adopt here is to prevent the die bounce-back with reset cylinder.Another effect of Here it is reset cylinder.The front is mentioned the cavity of resorption of reset cylinder and is ventilated all the time.And epicoele is opened between 160 °-220 °, controls with a two-position three-way valve here.After valve was opened, upper chamber of air cylinder began ventilation.Adjusting (being slightly less than cavity of resorption air pressure) by pressure-reducing valve makes the pressure balance of upper and lower cavity.So just played the purpose that prevents the die bounce-back.

Guide plate has two effects, and the one, as the guiding of center-pole, prevent that center-pole from rotating.The 2nd, prevent that the demoulding seat from rotating.

Press portion comprises main beam, recessed crossbeam, press strip, compacting cam, compacting slide block, adjustment axle, worm gear, worm screw, worm shaft, gear wheel, pressing stroke piece, the compacting support of pressing.Recessed crossbeam is contained on the center-pole, and main the pressure between beam and the recessed crossbeam is equipped with press strip, and the compacting cam is contained on the gear wheel, and the compacting slide block is contained on the recessed crossbeam, adjusts axle and is contained on the casing, adjusts axle and is used to regulate pressing stroke.

The pressing part unit assembly drawing has been showed the compacting implementation method and the adjustment of machine.The pressing principle preamble is mentioned, sees accompanying drawing 1, mainly introduces the compacting implementation method of machine here:

Narrated the action of main pressure beam in the transmission mechanism, it is the parameter that has realized cosine curve with eccentric action, is transferred to entablature by yoke and pull bar again, makes the action of entablature consistent with it.And main the pressure has a segment distance between beam and the recessed crossbeam, but this distance is again less than the eccentric eccentric distance e of twice, this will cause the main beam of pressing to push down recessed crossbeam when not arriving 180 °, recessed crossbeam is that die is fixing with center-pole, the main like this beam of pressing will be pushed down the recessed crossbeam segment distance of passing by downwards, this segment distance is exactly synchronous pressing stroke, what see on lathe then is to dash with die down to move downward together, this is owing to main press keeping strokes of beam and low punch, and that recessed crossbeam and die are kept strokes is formed.The pressure compacting that this just makes so-called die float.

When synchronous compacting finished, the compacting slide block just in time was pressed on the compacting cam, and at this moment recessed crossbeam just maintains static, and machine also just in time arrives 180 °, and this position is fixed with respect to lathe, and compacting finishes when roof pressure (no suppress).Press strip is the gap of adjusting compacting cam and compacting slide block, guarantees that the compacting slide block just in time contacts the compacting cam in the time of 180 °, press strip match grinding after the measurement clearance when assembling.

Here the pressing stroke of lathe is adjustable, and the ground method of adjustment is to realize by the distance that changes between main pressure beam and the recessed crossbeam.When their distances are dwindled, just be equivalent to the main beam of pressing and push down recessed crossbeam in advance, and the relative lathe in position that compacting finishes is constant, this just is equivalent to increase pressing stroke.

Mechanically be achieved in that to rotate and adjust axle, driving gear and gear are rotated, also driving simultaneously worm shaft rotates, drive adjusting rod by worm gear, one section screw thread M30X2 is arranged on the adjusting rod, join the pressing stroke piece, the pressing stroke piece does not rotate with adjusting rod owing to suppress the spacing of support, the pressing stroke piece will move up and down with respect to recessed crossbeam like this, and the upper limit of recessed crossbeam is pushed down the pressing stroke piece and is realized, so the upper limit of recessed crossbeam also changes along with moving of pressing stroke piece, has just adjusted the distance between main pressure beam and the recessed crossbeam, has adjusted pressing stroke.

The demoulding partly comprises regulating shaft, two bevel gears, major axis, gear, gear wheel, demoulding crossbeam, demoulding cam, demoulding slide block.Gear wheel is connected by contiguous block (Hough) with demoulding crossbeam; the internal thread of gear wheel matches with the external screw thread of center-pole again; demoulding cam matches with demoulding slide block; demoulding slide block is contained on the center-pole; gear is connected with major axis by key; gear and gear wheel match, and major axis one end is equipped with bevel gear, and bevel gear is housed on the regulating shaft matches.

The effect of demoulding part mainly is to adjust the product stripping stroke, the theory of mechanics of stripping stroke:

Rotate regulating shaft; engagement by two bevel gears drives the major axis rotation; gear is connected with major axis by key; drive gear wheel by gear drive again; gear wheel is connected by contiguous block (Hough) with demoulding crossbeam; and the internal thread of gear wheel matches with the external screw thread of center-pole; preamble mentions that second effect of guide plate is exactly to prevent that the demoulding crossbeam from rotating; demoulding crossbeam does not just rotate with gear wheel like this; again because the effect that is threaded; the relative center-pole of demoulding crossbeam is slided up and down, and demoulding slide block is fastened on the demoulding crossbeam by dovetail, can slide with respect to demoulding crossbeam; screw thread on gear wheel; alignment pin is demoulding cam fixedly; when demoulding angular displacement of the cam during, demoulding cam contact demoulding slide block 230 ° of left and right sides, demoulding slide block to pressing down; demoulding crossbeam also moves downward thereupon; during to 300 ° of left and right sides, what cam arrived it far stops some the maximum position of the i.e. demoulding.The die cam turns over maximum subsequently, and the demoulding finishes.Die is owing to the effect of reset cylinder begins to reset.Adjust demoulding crossbeam and adjust stripping stroke exactly with respect to the position of center-pole, when demoulding crossbeam moves up with respect to center-pole, be equivalent to the demoulding in advance, stripping stroke increases, otherwise reduces.

Top-pressure mechanism comprises roof pressure piston, airdraulic actuator, valve plate, roof pressure guiding mechanism.Gas-liquid bag, overflow valve, Pressure gauge, check valve are housed on the valve plate.Airdraulic actuator is fixed on main the pressure on the beam, and the airdraulic actuator oil-in links to each other with the valve plate oil-out by oil pipe, and device has roof pressure piston, piston rod in the oil cylinder.

The gas-liquid pack arrangement has the gas-liquid tank body, the interior device of gas-liquid tank body has hydraulic oil, gas-liquid tank body top is provided with loam cake, the gas-liquid tank body is provided with air inlet, oil-out, oil level monitor, air inlet links to each other with source of the gas (air compressor) by pipeline, oil-out links to each other with the valve plate oil-in by pipeline, is provided with fluid pressure line in the valve plate.

The overflow valve device is connected with fluid pressure line on the valve plate on valve plate, and overflow valve is the oil return valve of top pressing system, and the overflow valve import is connected with oil cylinder by fluid pressure line in the valve plate, and the overflow valve outlet is connected with the gas-liquid bag by fluid pressure line in the valve plate.

Check valve apparatus is on valve plate, check valve inlet contracts out hydraulic fluid port by fluid pressure line on the valve plate and gas-liquid and is connected, check valve outlet is connected with oil cylinder by the fluid pressure line on the valve plate, and pressure meter device is being connected with the oil-out of fluid pressure line on the valve plate on the valve plate.

What the front was mentioned is no roof pressure pressing principle, when roof pressure is suppressed, the roof pressure piston moves downward, greater than the thickness of press strip, at this moment, just not that the main beam of pressing is pushed down recessed crossbeam synchronously in the pressing process, but the roof pressure piston on the main pressure beam is pushed down recessed crossbeam, and owing to the cavity of resorption power of piston force much larger than reset cylinder, the roof pressure piston can not bounce back, when the compacting slide block is pushed down the compacting cam, recessed crossbeam no longer down moves, and the mechanical force in the machine is again much larger than piston force, and at this moment piston bounces back, the main beam of pressing moves downward a segment distance again, and this segment distance is exactly the roof pressure stroke.

Concrete implementation method is as follows: lead to hydraulic oil in fact in the roof pressure piston, lead to the outer hydraulic pressure valve plate of casing by fluid pressure line again, check valve and overflow valve are housed on the hydraulic pressure valve plate, hydraulic oil leads to airdraulic actuator, provides power source by air pressure.The set pressure of overflow valve is 8Mp, piston diameter is 70mm, and the controlled pressure of overflow valve is much larger than die reset cylinder power, when above-mentioned synchronous compacting like this, piston does not bounce back owing to hydraulic coupling, when arriving the pressing position, less than lathe press power, at this moment open again by overflow valve for hydraulic coupling, hydraulic oil is by pipeline return-air liquid bag, piston bounces back backward, and upper punch continues to walk downward, and has so just realized roof pressure.

The roof pressure guiding mechanism comprises adjusts axle, gear, axle, sprocket wheel, bevel gear, major axis, adjust gear, the roof pressure control agent, rotate and adjust axle, driven gear, axle key is connected on the sprocket wheel, be transferred to little axle by chain, the other end of little axle connects bevel gear, be transferred to major axis by gear pair, the cross section of major axis is square, and also cuts square hole on the pinion stand, adjusting gear fixes by alignment pin and pinion stand, the roof pressure control agent, pinion stand, adjust gear and fix, when major axis rotates like this, drive the three and rotate together by screw, screw thread on the roof pressure control agent is joined work with the main screw thread of beam of pressing, the roof pressure control agent will move thereupon like this, and its stroke is 6mm, so the roof pressure stroke also is 6mm, carrier gear plays transitional function, is the bridge that connects left adjusting gear and right adjusting gear.

Entablature partly comprises entablature, piston, sleeve, hydraulic die cushion piston, worm shaft, worm gear, adjustment motor.Piston is contained in the sleeve, and sleeve is contained on the entablature, and the hydraulic die cushion piston is contained in upper cartridge, adjusts motor and is contained in entablature one side, and worm shaft, worm gear are contained on the entablature, adjusts motor output shaft by a pair of bevel gear transmission worm shaft.

Entablature is connected with the main beam of pressing by pull bar, and piston is connected with upper punch by screw, and piston plays the effect of the protection demoulding; sleeve is equivalent to the cylinder body of cylinder; in the time of 0 °-180 °, the lower chamber of air cylinder air inlet, upper punch is in upper limit; in the time of after machine moves to 180 °; upper chamber of air cylinder air inlet, upper punch have had the trend that moves downward, and upper punch will be pushed down blank all the time when entablature moved upward; finish up to the demoulding, at this moment piston cavity of resorption air inlet upper punch returns upper limit.Protection stripper EOS, the upper end of piston connects hydraulic die cushion piston, the upper end sealed hydraulic oil of hydraulic die cushion piston; the effect of hydraulic die cushion is the effect of protection upper punch, when press power excessive or vexed car the time, and the turn screw rod; discharge hydraulic coupling, the upper punch retraction can go back by anti-car like this.Nut plays the effect of regulating prestrain.

The stroke of entablature also is adjustable, and the rotary worm axle drives worm gear and rotates, and the internal thread of worm gear and the external screw thread of sleeve cooperate, and sleeve does not change, and the just relative entablature of sleeve moves up and down like this, and its adjustment stroke is 70mm.

Feed mechanism comprises clamping cylinder, long-armed, feeding arm, feeding cam.Clamping cylinder one end be fixed on long-armed on, the other end is fixed on the column, the feeding arm links to each other with long-armed, feeding cam is contained on the semiaxis, the feeding arm links to each other with feeding cam by pinch rollers.

Compress feeding cam by the feeding arm, rotate along with cam like this, the feeding arm swings up and down, and long-armedly is fixed on the axle with the feeding arm, so long-armedly also swing thereupon, clamping cylinder makes pinch rollers contact all the time with feeding cam.The rotation of feeding cam is the same with the velocity of rotation of main shaft, has guaranteed the synchronism of feeding.

Hopper material boots partly comprise hopper, material boots, material pipe, material boots clamping cylinder, feeding rod.Material boots clamping cylinder one end is fixed on that the other end links to each other with feeding rod on the lathe bed, and the feeding rod front end is connected with the material boots.The major function of this part is charging and powder feeding, and powder is contained on the hopper, and logical charge tube flows to the material boots, will expect that by the feeding of feeding cam boots advance matrix cavity, and powder just flows to matrix cavity from the material boots then, completes material back material boots and returns, and the feeding work step is finished.

Material boots clamping cylinder is a single-acting cylinder, and epicoele is ventilated all the time, makes the material boots push down concave template, anti-leak-stopping powder always.

Cross and owe measuring mechanism and comprised the amount of owing cylinder, lever, lever dolly, roller.Cross the amount of owing cylinder and be installed on the lever by oscillating bearing, lever is contained on the lever dolly, and lever dolly is fixed on the casing by screw, and roller is pressed on the pressing stroke gag lever post, and the pressing stroke gag lever post is connected with the compacting limited block by screw thread.

Crossing and owing measuring mechanism mainly is to realize the amount of owing, cross the amount of owing cylinder, 100 cylinder diameters, the DNC standard cylinder of FESTO is installed on the lever by oscillating bearing, lever is contained on the lever dolly, be fixed on the casing by screw, roller is pressed on the pressing stroke gag lever post, is that pressured system limited block is realized owing to pressing stroke is spacing, and the compacting gag lever post is to be threaded with it, and the compacting gag lever post is to limit pressing stroke.Leverage mainly is the effect of amplification power.Because die reset cylinder cavity of resorption is ventilated all the time, and matrix cavity is suppressed downwards when compacting synchronously, so want to realize the amount of owing, cross power that the amount of owing cylinder produces must be greater than die reset cylinder power and compacting synchronously the time powder to the frictional force of die, this cover leverage can produce 3 times moment, can meet the demands.

Cross the amount of owing and comprise excessive charging and the amount of owing charging.Excessive charging major function is to make powder evenly adorn powder, and when expecting boots at matrix cavity dress powder, die is shaken up and down once, and the material boots are return again, play the effect of vibration powder; The amount of owing charging major function is to prevent face powder, rigidly connects when touching powder in upper punch, prevents the function that powder overflows.The stroke of crossing the amount of owing is 5mm, and stroke is adjustable.

Middle-size and small-size crank slide block type full automatic dry powder press is supporting pneumatic part, lubricated part, electric control box etc.

Pneumatic part mainly is used in pneumatic clutch, the control of material boots, and the material boots compress, and cross the amount of owing cylinder, the prestrain cylinder, the die reset cylinder, all the other are used on the mould bases.

Lubricated part: the lubricated of lathe is to adopt to force the fountain thin oil lubricant, is fuel tank with the Lower Half of casing, adopts three phase electric machine and gear pump, picks out oil strainer and oil suction filter, pressure signalling generator, selects the product of Bei Qier for use.The pressure signalling generator is to stop up when filter, stopping alarm during hypertonia, protection motor and pump.

Middle-size and small-size crank slide block type full automatic dry powder press is to integrate mechanical, electrical, liquid, gas, shaping equipment computer control, high in technological content.The industrial trade field that is suitable for is very wide, and is more cheap 1/3～1/4 than the external product of similar machine, has vast market prospect.

Middle-size and small-size crank slide block type full automatic dry powder press operation principle:

At first mould is installed on the mould bases, adjust the motor of running part, motor drives the driving shaft rotation by worm reducer, driving belt, by travelling gear transmission eccentric wheel, connecting rod, guiding pull bar, the guiding pull bar drives the upper and lower motion of entablature, thereby the work of compacting blank is finished in the upper and lower motion of T-connecting piece in the drive.

Feeding work: the demoulding cam that installs simultaneously in transmission gear wheel inboard promotes demoulding slide block; drive the upper and lower motion of demoulding crossbeam; be demoulding campaign when moving downward, be fixed on center-pole on the demoulding crossbeam, T-connecting piece drives under the lower bolster, mould bases of crossbeam guide pillar, concave template motion and finishes demoulding work down.When demoulding cam from far stopping journey to closely stopping journey when rotating, the reset cylinder of device before and after demoulding crossbeam tried hard to recommend the moving demoulding crossbeam that promotes down at compressed air and moved upward and reach charging position.

The change-speed gearing group that the transmission gear wheel drives the feeding part is rotated feeding cam synchronously, the roller that is contained in feeding arm one end is under the active force of feeding cylinder, roller is rotated along the feeding cam outer rim all the time, pass through the long-armed swing of roller transmission in the feeding cam rotation process, move forward and backward by feeding rod, drive the material boots and finish feeding and push away base work.Push away base for passing the blank that suppresses.

Entablature part: when the upper and lower motion of guiding pull bar, the upper and lower motion of entablature, when entablature moves downward, device T shape part in the pneumatic piston rod drive of the cylinder block on the entablature moves down and is pressed into die, the roof pressure piston of device in two roof pressure cylinder bodies on entablature both sides forces concave template to move downward synchronously on concave template, finishes the compacting work of bottom punch.

The hydraulic die cushion piston of device in the cylinder body on entablature top in the cylinder block pressing process, link to each other with pneumatic piston rod on T shape part under the cope match-plate pattern reaction force; promoting pneumatic piston rod drive cylinder block moves upward; the hydraulic piston that promotes in the cylinder body moves upward; oil pressure is raise; show pressure by pressure sensor; when the dry powder press superpressure, can shed the oil cylinder internal pressure, fix a breakdown, play the safeguard protection effect.

Middle-size and small-size crank slide block type full automatic dry powder press characteristics:

Running part is connected with key by original driving gear and changes the two-in-series tooth into, makes the processing together in aggregates of gear and axle, guarantees the synchronism of two gears; Change the adjusting of former T shape locking nut down into worm screw and regulate, be convenient to operation more; The stopping function of cancellation check plate, stop adopt the cylinder two-chamber to advance balance gas, make structure simpler, and cost reduces; Press portion increased the kinetic energy of the amount of owing, and top-pressure mechanism changes airdraulic actuator into by former dish spring, and is easy to maintenance, long service life; Entablature adds the motor adjustment, is convenient to operation more, adjusts accurately, changes hydraulic die cushion into by press rods, is meeting superpressure, vexed Che Shike release, the protection machine; The feeding part changes sprocket wheel into feeding cam direct transmission, and cam is made on the semiaxis, and another connecting shaft adds the rotation encoder, makes simple in structure, reliable; Hopper material boots change cylinder into by spring compression and compress, and reliable design, strength are even, and the life-span is long.

Advanced pressure die two-way three compact techniques that float have been adopted in the design of the structure function of press, and machine construction is advanced reasonable, the geometric accuracy height of stampings, and the volume density of blank is evenly distributed, production latent qualitative good.The speed governing of press can be adopted variable-frequency control technique, carries out programme-control with industrial controlled machine PLC, and the input of signal is mainly by the input of rotary encoder control angle, control accuracy height, accurate positioning; In the press process, reset and the realization of roof pressure compacting mechanism of die adopt hydraulic control technology to implement; Adopted the protection ejection technique for the generation of the aliquation that prevents blank and micro-flaw when the demoulding, the reinforced control of material boots is also very convenient, and this respect is controlled by pneumatics; Attach great importance in the design of press operating the safeguard protection of the person, can have the grating safety guard, overpressure protection is arranged, the powder position is detected and the die protection; The operation of press is adjusted very convenient, and various compacting parameters all can accurately quantitatively be regulated continuously, and are sequencing, are convenient to computer management.This equipment is the shaping equipment that integrates mechanical, electrical, liquid gas, computer control.

This press adopts lower punch to fix, and the bidirectional strength that die floats is neutralized system mechanism, so the curve movement of press is the organic assembling of last punch curve movement and die curve movement.Fig. 1 has drawn basic bidirectional strength and has neutralized the system schematic diagram.Each work step is can both be one by one on compaction curve corresponding.

Because the motion of press upper punch is by due to the slider-crank mechanism, so the curve movement of upper punch is a simple chord curve.The die curve movement is complicated, can be divided into the filler position, owes the filler position, compacting synchronously, and the demoulding, some stages such as reset.Because lower punch is to be fixed on the die holder motionlessly, its curve movement is a horizontal linear.

Description of drawings

The utility model is described in further detail below with reference to accompanying drawing.

Fig. 1 is the basic compaction procedure schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 2 is the casing part front view of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 3 is the casing part left view of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 4 is the drive part front view of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 5 is the drive part vertical view of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 6 is the running part schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Fig. 7 is the related design of part schematic diagram of the center-pole of middle-size and small-size crank slide block type full automatic dry powder press running part.

Fig. 8 is the related design of part A-A of the center-pole cutaway view of middle-size and small-size crank slide block type full automatic dry powder press running part.

Fig. 9 is the related design of part E-E of the center-pole schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press running part.

Figure 10 is the press portion schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 11 is the press portion A-A cutaway view of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 12 is that the pressing stroke block part B of middle-size and small-size crank slide block type full automatic dry powder press press portion is to schematic diagram.

Figure 13 is the mould emptier schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 14 is the mould emptier cutaway view of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 15 is the roof pressure part schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 16 is middle-size and small-size crank slide block type full automatic dry powder press roof pressure part roof pressure guiding mechanism schematic diagram.

Figure 17 is the hydraulic pressure valve plate schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press roof pressure part.

Figure 18 is the entablature part schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 19 is the entablature part-structure schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 20 is that the entablature of middle-size and small-size crank slide block type full automatic dry powder press is partly adjusted motor adjustment member structural representation.

Figure 21 is that the entablature segment worm gear worm screw of middle-size and small-size crank slide block type full automatic dry powder press is adjusted structural representation.

Figure 22 is the feed mechanism schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 23 is the hopper material boots part schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Figure 24 is that the mistake of middle-size and small-size crank slide block type full automatic dry powder press is owed the measuring mechanism schematic diagram.

Figure 25 is the schematic diagram of middle-size and small-size crank slide block type full automatic dry powder press.

Label in the accompanying drawing: 1; casing, 2; column, 3; the mould bases seat; 4; case, 5; case lid, 6; respirator; 7; motor, 8; motor mount, 9; adjust seat; 10; decelerator, 11; big belt pulley, 12; clutch; 13; driving-belt, 14; small belt pulley, 15; transmission shaft bearing; 16; duplicate gear, 17; power transmission shaft, 18; left side gear wheel; 19; left half axle, 20; eccentric wheel, 21; left side connecting rod; 22; left side yoke, 23; left lever, 24; right pull bar; 25; right yoke, 26; right connecting rod, 27; right gear wheel; 28; right axle shaft, 29; rotary encoder, 30; eccentric wheel; 31; sliding bearing, 32; transmission shaft bearing, 33; center-pole; 34; guide plate, 35; the die restoring board, 36; oscillating bearing; 37, reset cylinder, 38; T type piece; 39; worm gear case, 40; worm gear, 41; worm screw; 42; worm screw, 43; worm gear, 44; gear wheel; 45; worm shaft, 46; gear, 47; adjust axle; 48; driving gear, 49; main beam, 50 of pressing; press strip; 51; recessed crossbeam, 52; the compacting cam, 53; the compacting slide block; 54; adjusting rod, 55; the pressing stroke piece, 56; the compacting support; 57; demoulding cam, 58; demoulding crossbeam, 59; the edge joint piece; 60; gear wheel, 61; demoulding slide block, 62; gear; 63; bevel gear, 64; regulating shaft, 65; major axis; 66; the roof pressure piston, 67; airdraulic actuator, 68; the roof pressure control agent; 69; major axis; 70; pinion stand, 71; adjust gear, 72; rotate and adjust axle; 73; gear; 74; axle, 75; sprocket wheel, 76; chain; 77; little axle; 78; bevel gear, 79; carrier gear, 80; adjust gear; 81; oil level monitor; 82; valve plate, 83; overflow valve, 84; check valve; 85; airdraulic actuator; 86; Pressure gauge, 87; the hydraulic die cushion piston, 88; entablature; 89; piston; 90; upper punch, 91; nut, 92; sleeve; 93; adjust motor; 94; bevel gear, 95; worm shaft, 96; worm gear; 97; screw rod; 98; clamping cylinder, 99; long-armed, 100; axle; 101; the feeding arm; 102; feeding cam, 103; pinch rollers, 104; hopper; 105; the material pipe; 106; feeding rod, 107; material boots clamping cylinder, 108; the material boots; 109; the amount of owing cylinder; 111; lever, 112; roller, 113; lever dolly.

The specific embodiment

With reference to accompanying drawing 1～25, middle-size and small-size crank slide block type full automatic dry powder press structure mainly is divided into ten parts: casing part (accompanying drawing 2,3), drive part (accompanying drawing 4,5), transmission mechanism (accompanying drawing 6,7,8,9), press portion (accompanying drawing 10,11,12), demoulding part (accompanying drawing 13,14), roof pressure part (accompanying drawing 15,16,17), entablature part (accompanying drawing 18,19,20,21), feeding part (accompanying drawing 22), hopper material boots parts (accompanying drawing 23), cross the amount of owing part (accompanying drawing 24).

Casing part (seeing accompanying drawing 2,3): this part has mainly shown the general appearance of lathe.This part comprises column 2, casing 1, case lid 5, respirator 6, case 4, mould bases seat 3 etc.Casing 1 internal structure mainly is by the decision of the parts of lathe.Case lid 5 is contained on the casing 1, and case lid 5 and casing 1 are by being threaded.Case 4 is contained in casing 1 one sides, and respirator 6 is contained on the column 2, and two root posts 2 install respectively in case lid 5 both sides, and mould bases seat 3 is contained on the column 2.Respirator 6 is provided with blow vent, air filtration layer, makes dry powder press in pressing process central post, box house and outside ventilation.Lubricating oil is housed in the casing, and the lathe height is mainly determined in order to adapt to mould bases.It is to serve as grease-box that casing 1 also has an effect.

Drive part (seeing accompanying drawing 3,4): drive part comprises motor 7, motor mount 8, small belt pulley 14, big belt pulley 11, driving-belt 13, clutch 12, decelerator 10, motor mounting is on casing 1 rear side motor mount 8, decelerator 10 is installed in the casing 1 side case 4, clutch 12 is contained on the reducer shaft, by the variable-frequency motor power output.Motor is selected 3 kilowatts of Siemens's frequency control motors for use.Transmission is arrived decelerator 10 by small belt pulley 14, driving-belt (V band) 13, big belt pulley 11, clutch 12.Select the Hua Shengchang worm-gear speed reducer for use.Decelerator 12 is selected magnificent moral pneumatic clutch for use.The band transmission is that one-level is slowed down.Worm-gear speed reducer is a double reduction.So just improved moment of torsion greatly.Pneumatic clutch plays the protection lathe, lathe action can be in stop and two states that move, make machine be unlikely at starting state that moment of torsion is excessive to burn out three effects of motor.What deserves to be mentioned is the effect of big belt pulley.It is not only the effect that reaches deceleration as driven pulley.Can also increase the rotary inertia of lathe as flywheel.Can be the machine storage power like this.When compacted products, energy is discharged.Make lathe be unlikely to vexed car when the pressing position.Respirator is provided with passage, air filtration layer

The belt tension mechanism of drive part adopts the fine setting motor mount to realize.Motor 7 adopts the B3 mounting means.The motor mounting hole is fixed on the motor mount 8.Motor mount 8 then has been out two kidney slots.By the bolting motor.Motor 7 sides have two to adjust seat 9.Be fixed on the mount pad by screw.Adjust the adjustment screw 10 of middle two M12 of screw-in of seat.Withstand motor 7 sides.When needing to adjust driving-belt.Unclamp the bolt of fixed motor earlier, screw the adjustment screw of adjusting on the seat 9 10 again.Up to withstanding electrical motors to the position that needs to adjust.It is just passable to screw bolt at last.This belt tension method is relatively simple for structure.Can save cost greatly.

Transmission mechanism (seeing accompanying drawing 6,7,8,9): transmission mechanism comprises duplicate gear 16, power transmission shaft 17, left and right gear wheel 18,27, eccentric wheel 20,30, sliding bearing 31, left and right connecting rod 21,26, left and right yoke 22,25, left and right pull bar 23,24, rotary encoder 29, left half axle 19, right axle shaft 28, center-pole 33, T shape piece 38, worm gear case 39, die restoring board 35.Power transmission shaft is contained on the casing 1 by sliding bearing 15,32, power transmission shaft is provided with duplicate gear, power transmission shaft and duplicate gear are one, left half axle and right axle shaft are contained on the casing, sliding bearing is installed on the left and right connecting rod, eccentric wheel is contained in the sliding bearing, and two eccentric wheel endoporus match with left half axle, right axle shaft respectively, and left and right gear wheel is contained in two eccentric wheel inner shafts respectively and puts, yoke is contained in main the pressure on the beam, links to each other with connecting rod by sliding bearing.Die restoring board 35 is equipped with in center-pole 33 lower ends, and worm gear case 39 is equipped with on center-pole 33 tops, and T shape piece 38 is equipped with in center-pole 33 upper ends.

Accompanying drawing 6 has shown the main transmission of machine.Forenamed power transmission shaft links to each other with reducer output shaft, and power transmission shaft is provided with duplicate gear 16.Duplicate gear 16 meshes with left and right gear wheel 18,27 respectively, left and right gear wheel 18,27 drives eccentric wheel 20,30 motions respectively, and eccentric wheel 20,30 has been formed a slider-crank mechanism by sliding bearing 31, left and right connecting rod 21,26, left and right yoke 22,25, left and right pull bar 23,24.Here eccentric eccentric distance e just is equivalent to the crank length of slider-crank mechanism, and the follower lever that links to each other with slide block is equivalent to left and right sides connecting rod, and left and right sides pull bar is equivalent to slide block.And sliding bearing is equivalent to hinge.The upper end of pull bar connects entablature.Entablature connects the upper junction plate of mould bases again, connects the upper punch of mould again.So the action of pull bar is consistent with the action of upper punch.And the other end of yoke connects is the main beam of pressing, and the action of main like this pressure beam, pull bar 23,24, entablature all is consistent.And the movement locus of the terminal slide block of slider-crank mechanism is a cosine curve over time.Like this, the movement locus of entablature, main pressure beam also is a cosine curve.If curve is 0 ° when peak, then the angle in minimum point is 180 °.Like this, the one-period of machine is 360 °.Rotary encoder apparatus is on right axle shaft, and rotary encoder 29 devices are on right axle shaft 28, and effect is exactly to measure the residing angle of machine at any time, is convenient to Human-to-Machine's control.The left end of left half axle 19 connects feeding cam.

Accompanying drawing 7,8,9 has shown the related part on the center-pole 33 of running part.The upper end of center-pole 33 and worm gear case 38 are connected by screw.Worm gear case 38 structures are seen E-E cutaway view (seeing accompanying drawing 9), and worm screw 41 is equipped with locking member, digit position display.The worm gear 40 of worm screw 41 engagements is master gears.There is internal and external threads worm gear 40 lower ends, are respectively left-handed and dextrorotation.External screw thread and center-pole 33 screw threads are joined work.Internal thread and T type piece 38 screw threads are joined work.Worm gear 40 turns around like this, rising 3mm, 38 rising 6mm of T type piece.

The lower end of center-pole 33 is connected with die restoring board 35, and the two ends, the left and right sides of die restoring board 35 connect two reset cylinders 36, reset cylinder 36 anti-casing 1 bottoms that are hung in oscillating bearing 37.Reset cylinder 36 is selected the compact cylinder of FESTO for use, and model is ADVU-80-80-A-P-A.The reset cylinder 36 here not only plays the effect that die resets, and also has an important effect to prevent the die bounce-back exactly when the pressing position.When machine run is 180 ° to the pressing position.The compacting supporting cam wheel has soon turned over the compacting slide block.And the demoulding does not also begin.Certainly, optimal method is that the compacting supporting cam wheel just turns over the compacting slide block, and meanwhile, the demoulding just begins.Problem with regard to not having a rebound like this.In fact this situation is impossible satisfy.Because when stripping stroke changes, the angle of the demoulding also changes thereupon.And the terminal point of compacting is constant all the time, even if satisfy above-mentioned situation during for 10mm in stripping stroke like this.When being 20mm, stripping stroke just can not still meet the demands.And when die goes out to bounce-back, be very disadvantageous to compression moulding.May cause part to crack, when serious even can mold damage.May produce this consequence just, just must prevent the die bounce-back in the pressing position.Usual way is to add check plate on center-pole, with the anti-bounce-back of locking button.What adopt here is to prevent the die bounce-back with reset cylinder.Another effect of Here it is reset cylinder.The front is mentioned the cavity of resorption of reset cylinder and is ventilated all the time.And epicoele is opened between 160 °-220 °, controls with a two-position three-way valve here.After valve was opened, upper chamber of air cylinder began ventilation.Adjusting (being slightly less than cavity of resorption air pressure) by pressure-reducing valve makes the pressure balance of upper and lower cavity.So just played the purpose that prevents the die bounce-back.

Guide plate 34 is housed on the center-pole 33.It also has two effects, and the one, as the guiding of center-pole 33, prevent that center-pole 33 from rotating, the 2nd, prevent that the demoulding seat from rotating.

Press portion (seeing accompanying drawing 10,11,12): press portion comprises main beam 49, recessed crossbeam 51, press strip 50, compacting cam 52, compacting slide block 53, adjustment axle 47, worm gear 43, worm screw 42, worm shaft 45, gear wheel 44, pressing stroke piece 55, the compacting support 56 of pressing.Recessed crossbeam 51 is contained on the center-pole 33, and main the pressure between beam 49 and the recessed crossbeam 51 is equipped with press strip 50, and compacting cam 52 is contained on the gear wheel 44, and compacting slide block 53 is contained on the recessed crossbeam 51, adjusts axle 47 and is contained on the casing 1, adjusts axle 47 and is used to regulate pressing stroke.

Narrated the action of main pressure beam in the transmission mechanism, it is the parameter that has realized cosine curve with eccentric action, is transferred to entablature 89 by

yoke

21,22 and pull

bar

23,24 again, makes the action of entablature 89 consistent with it.And main the pressure has a segment distance between beam 49 and the recessed crossbeam 51, but this distance is again less than the eccentric eccentric distance e of twice, this will cause the main beam of pressing to push down recessed crossbeam 51 when not arriving 180 °, recessed crossbeam 51 is that die is fixing with center-pole 33, the main like this beam 49 of pressing will be pushed down recessed crossbeam 51 segment distance of passing by downwards, this segment distance is exactly synchronous pressing stroke, what see on lathe then is to dash with die down to move downward together, this is owing to main press keeping strokes of beam and low punch, and that recessed crossbeam and die are kept strokes is formed.The pressure compacting that this just makes so-called die float.

When synchronous compacting finished, compacting slide block 53 just in time was pressed on the compacting cam 52, and at this moment recessed crossbeam just maintains static, and machine also just in time arrives 180 °, and this position is fixed with respect to lathe, and compacting finishes (no roof pressure system).Press strip 50 is gaps of adjusting compacting cam 52 and compacting slide block 53, guarantees that the compacting slide block just in time contacts the compacting cam in the time of 180 °, press strip 50 match grinding after the measurement clearance when assembling.

Here the pressing stroke of lathe is adjustable, and the ground method of adjustment is to realize by the distance that changes between main pressure beam 49 and the recessed crossbeam 51.When their distances are dwindled, just be equivalent to the main beam 49 of pressing and push down recessed crossbeam 51 in advance, and the relative lathe in position that compacting finishes is constant, this just is equivalent to increase pressing stroke.

Mechanically be achieved in that to rotate and adjust axle 47, driving gear 48 and gear 46 are rotated, also driving simultaneously worm shaft 45 rotates, drive adjusting rod 54 by worm gear, one section screw thread M30X2 is arranged on the adjusting rod 54, join pressing stroke piece 55, pressing stroke piece 55 does not rotate with adjusting rod 54 owing to suppress the spacing of support 56, pressing stroke piece 55 will move up and down with respect to recessed crossbeam 51 like this, and the upper limit of recessed crossbeam 51 is pushed down pressing stroke piece 55 and is realized, so the upper limit of recessed crossbeam 51 also changes along with moving of pressing stroke piece 55, has just adjusted the distance between main pressure beam 49 and the recessed crossbeam 51, has adjusted pressing stroke.

Demoulding part (seeing accompanying drawing 13,14): the demoulding partly comprises regulating shaft 64, two bevel gears 63, major axis 65, gear 62, gear wheel 60, demoulding crossbeam 58, demoulding cam 57, demoulding slide block 61.Gear wheel 60 is connected by contiguous block 59 (Hough) with demoulding crossbeam 58; the internal thread of gear wheel 60 matches with the external screw thread of center-pole 33 again; demoulding cam 57 matches with demoulding slide block 61; demoulding slide block 61 is contained on the center-pole 33; gear 62 is connected with major axis 65 by key; gear 62 matches with gear wheel 60, and major axis 65 1 ends are equipped with bevel gear 63, and bevel gear 63 is housed on the regulating shaft 64 matches.

The effect of demoulding part mainly is to adjust the product stripping stroke, and accompanying drawing 13,14 has shown the theory of mechanics of stripping stroke:

Rotate regulating shaft 64; engagement by two bevel gears 63 drives major axis 65 rotations; gear 62 is connected with major axis 65 by key; drive gear wheel 60 by gear 62 transmissions again; gear wheel is connected by contiguous block 59 (Hough) with demoulding crossbeam 58; and the internal thread of gear wheel 60 matches with the external screw thread of center-pole 33; preamble mentions that second effect of guide plate 34 is exactly to prevent that the demoulding crossbeam 58 from rotating; demoulding crossbeam 58 does not just rotate with gear wheel 60 like this; again because the effect that is threaded; demoulding crossbeam 58 relative center-poles 33 are slided up and down, and demoulding slide block 61 is fastened on the demoulding crossbeam 58 by dovetail, can slide with respect to demoulding crossbeam 58; screw thread on gear wheel 60; alignment pin is demoulding cam 57 fixedly; when demoulding cam 57 rotational angles during, demoulding cam 57 contact demoulding slide blocks 61 230 ° of left and right sides, demoulding slide block 61 to pressing down; demoulding crossbeam also moves downward thereupon; during to 300 ° of left and right sides, what demoulding cam 57 arrived it far stops some the maximum position of the i.e. demoulding.The die cam turns over maximum subsequently, and the demoulding finishes.Die is owing to the effect of reset cylinder begins to reset.Adjust demoulding crossbeam 58 and adjust stripping stroke exactly with respect to the position of center-pole 33, when demoulding crossbeam 58 moves up with respect to center-pole 33, be equivalent to the demoulding in advance, stripping stroke increases, otherwise reduces.

Roof pressure part (accompanying drawing 15,16,17): roof pressure partly comprises roof pressure piston 66, airdraulic actuator 67, valve plate 82, roof pressure guiding mechanism.Gas-liquid bag 85, overflow valve 83, Pressure gauge 86, check valve 84 are housed on the valve plate 82.Airdraulic actuator 67 is fixed on main the pressure on the beam 49, and airdraulic actuator 67 oil-ins link to each other with valve plate 81 oil-outs by oil pipe, and device has roof pressure piston 66, piston rod 81 in the airdraulic actuator 67.

Gas-liquid bag 85 structures have the gas-liquid tank body, the interior device of gas-liquid tank body has hydraulic oil, gas-liquid tank body top is provided with loam cake, the gas-liquid tank body is provided with air inlet, oil-out, oil level monitor 81, air inlet links to each other with source of the gas (air compressor) by pipeline, oil-out links to each other with the valve plate oil-in by pipeline, is provided with fluid pressure line in the valve plate.

Overflow valve 83 devices are on valve plate 82, be connected with the fluid pressure line on the valve plate 82, overflow valve 83 is the oil return valve of top pressing system, and overflow valve 83 imports are connected with oil cylinder by fluid pressure line in the valve plate 82, and overflow valve 83 outlets are connected with the gas-liquid bag by fluid pressure line in the valve plate 82.

Check valve 84 devices are on valve plate 82, check valve 84 imports are connected with gas-liquid bag 85 oil-outs by the fluid pressure line on the valve plate 82, check valve 84 outlet is connected with oil cylinder by the fluid pressure line on the valve plate 82, and Pressure gauge 86 installs and is being connected with the oil-out of fluid pressure line on the valve plate on the valve plate 82.

What the front was mentioned is no roof pressure system principle, when roof pressure system, roof pressure piston 66 moves downward, greater than the thickness of press strip, at this moment, just not that the main beam of pressing is pushed down recessed crossbeam synchronously in the pressing process, but the roof pressure piston on the main pressure beam is pushed down recessed crossbeam, and owing to the cavity of resorption power of piston force much larger than reset cylinder, the roof pressure piston can not bounce back, when the compacting slide block is pushed down the compacting cam, recessed crossbeam no longer down moves, and the mechanical force in the machine is again much larger than piston force, and at this moment piston bounces back, the main beam of pressing moves downward a segment distance again, and this segment distance is exactly the roof pressure stroke.

Concrete implementation method is as follows:

Logical hydraulic oil in the roof pressure piston leads to the outer hydraulic pressure valve plate of casing by fluid pressure line again in fact, and check valve and overflow valve are housed on the hydraulic pressure valve plate, and hydraulic oil leads to airdraulic actuator, provides power source by air pressure.Principle: the set pressure of overflow valve is 8Mp, piston diameter is 70mm, and the controlled pressure of overflow valve is much larger than die reset cylinder power, when above-mentioned synchronous compacting like this, piston does not bounce back owing to hydraulic coupling, when arriving the pressing position, less than lathe press power, at this moment open again by overflow valve for hydraulic coupling, hydraulic oil is by pipeline return-air liquid bag, piston bounces back backward, and upper punch continues to walk downward, and has so just realized roof pressure.

The roof pressure guiding mechanism comprises adjusts axle 72, gear 73, axle 74, sprocket wheel 75, bevel gear 78, major axis 69, adjust gear 71, roof pressure control agent 68, rotate and adjust axle 72, driven gear 73, axle 74 keys are connected on the sprocket wheel 75, be transferred to little axle 77 by chain 76, the other end of little axle 77 connects bevel gear 78, arrive major axis 69 by the bevel gear auxiliary driving, the cross section of major axis 69 is square, and also cut square hole on the pinion stand 70, it is fixing by alignment pin and pinion stand 70 to adjust gear 71, roof pressure control agent 68, pinion stand 70, adjust gear 71 and fix by screw, when major axis 69 rotated like this, the drive three rotated together, screw thread on the roof pressure control agent 68 is joined work with the main screw thread of beam 49 of pressing, roof pressure control agent 68 will move thereupon like this, and its stroke is 6mm, so the roof pressure stroke also is 6mm, carrier gear 79 plays transitional function, is the bridge that connects left adjusting gear 71 and right adjusting gear 80.

Entablature part (seeing accompanying drawing 18,19,20,21): entablature partly comprises entablature 88, piston 89, sleeve 92, hydraulic die cushion piston 87, worm shaft 95, worm gear 96, adjusts motor 93.Piston 89 is contained in the sleeve 92, sleeve 92 is contained on the entablature 88, and hydraulic die cushion piston 87 is contained in sleeve 92 tops, adjusts motor 93 and is contained in entablature 88 1 sides, worm shaft 95, worm gear 96 are contained on the entablature 88, adjust motor 93 output shafts by a pair of bevel gear 94 transmission worm shafts 95.

Entablature 88 is connected with the main beam 49 of pressing by left and

right pull bar

23,24; piston 89 is connected with upper punch 90 by screw; piston 89 plays the effect (seeing accompanying drawing 19) of the protection demoulding; sleeve 92 is equivalent to the cylinder body of cylinder; in the time of 0 °-180 °; the lower chamber of air cylinder air inlet; upper punch 90 is in upper limit; in the time of after machine moves to 180 °; the upper chamber of air cylinder air inlet, upper punch 90 has had the trend that moves downward, and upper punch will be pushed down blank all the time when entablature 88 moved upward; finish up to the demoulding, at this moment piston 89 cavity of resorption air inlet upper punch return upper limit.Protection stripper EOS; the upper end of piston connects hydraulic die cushion piston (8); the upper end sealed hydraulic oil of hydraulic die cushion piston 87; the effect of hydraulic die cushion piston 87 is effects of protection upper punch 88; excessive or vexed car the time, turn screw rod 97 discharges hydraulic coupling when press power; the upper punch retraction can go back by anti-car like this.Nut 91 plays the effect of regulating prestrain.

The stroke of entablature 88 also is adjustable, adjusts motor 93 transmission worm shafts 95, drives worm gear 96 and rotates, the external screw thread of the internal thread of worm gear 96 and sleeve 92 cooperates, and sleeve does not change, and sleeve 92 just relative entablatures 88 move up and down like this, and its adjustment stroke is 70mm.

Feed mechanism (accompanying drawing 22): comprise clamping cylinder 98, long-armed 99, feeding arm 101, feeding cam 102.Clamping cylinder 98 1 ends are fixed on long-armed 99, and the other end is fixed on the column 2, and feeding arm 101 links to each other with long-armed 99, and feeding cam 102 is contained on the semiaxis, and feeding arm 101 links to each other with feeding cam 102 by pinch rollers 103.

Compress feeding cam 102 by feeding arm 101, along with feeding cam 102 rotates, feeding arm 101 swings up and down like this, and long-armed 99 are fixed on the axle 100 with feeding arm 101, so long-armed 99 also swing thereupon, clamping cylinder 98 makes pinch rollers 103 contact all the time with feeding cam 102.The rotation of feeding cam 102 and main shaft? velocity of rotation the same, guaranteed the synchronism of feeding.

Hopper material boots parts (accompanying drawing 23) comprise hopper 104, material boots 108, material pipe 105, material boots clamping cylinder 107, feeding rod 106.Material boots clamping cylinder 107 1 ends are fixed on that the other end links to each other with feeding rod 106 on the lathe bed, and feeding rod 106 front ends are connected with expects boots 108.The major function of this part is charging and powder feeding, and powder is contained on the hopper 104, and logical charge tube 105 flows to material boots 108, to expect that by the feeding of feeding cam 102 boots 108 advance matrix cavity, powder just flows to matrix cavity from material boots 108 then, completes material back material boots 108 and returns, and the feeding work step is finished.

Material boots clamping cylinder 107 is single-acting cylinders, and epicoele is ventilated all the time, makes material boots 108 push down concave template, anti-leak-stopping powder always.

Cross and owe measuring mechanism (accompanying drawing 24) and comprised the amount of owing cylinder 109, lever 111, lever dolly 113, roller 112.Cross the amount of owing cylinder 109 and be installed on the lever 111 by oscillating bearing 110, lever dolly 113 is fixed on the casing by screw, and roller 112 is pressed on the pressing stroke gag lever post, and the pressing stroke gag lever post is connected with the compacting limited block by screw thread.

This cover mechanism realized the amount of owing, cross the amount of owing cylinder 109,100 cylinder diameters, the DNC standard cylinder of FESTO is installed on the lever 111 by oscillating bearing 110, and lever dolly 113 is fixed on the casing 1 by screw, roller 112 is pressed on the pressing stroke gag lever post, because pressing stroke is spacing is that pressured system limited block is realized, and the compacting gag lever post is to be threaded with it, and the compacting gag lever post is exactly spacing pressing stroke.Leverage mainly is the effect of amplification power.Because die reset cylinder cavity of resorption is ventilated all the time, and matrix cavity is suppressed downwards when compacting synchronously, so want to realize the amount of owing, cross power that the amount of owing cylinder 109 produces must be greater than die reset cylinder power and compacting synchronously the time powder to the frictional force of die, this cover leverage can produce 3 times moment, can meet the demands.

Excessive major function is to make powder evenly adorn powder, and when expecting boots at matrix cavity dress powder, die is shaken up and down once, the material boots are return again, play the effect of vibration powder, and the major function of the amount of owing is to prevent face powder, rigidly connect when touching powder in upper punch, prevent the function that powder overflows.The stroke of crossing the amount of owing all is 5mm.Adjustable.

Pneumatic part:

Mainly be used in pneumatic clutch, the control of material boots, expect that boots compress, cross the amount of owing cylinder, prestrain cylinder, die reset cylinder, all the other are used on the mould bases.

Lubricated part:

Lathe lubricated is to adopt to force the fountain thin oil lubricant, is fuel tank with the Lower Half of casing, adopts three phase electric machine and gear pump, picks out oil strainer and oil suction filter, pressure signalling generator, selects the product of Bei Qier for use.The pressure signalling generator is to stop up when filter, stopping alarm during hypertonia, protection motor and pump.

With reference to accompanying drawing 1, middle-size and small-size crank slide block type full automatic dry powder press adopts lower punch to fix, and the bidirectional strength that die floats is neutralized system mechanism, so the curve movement of press is the organic assembling of last punch curve movement and die curve movement.Accompanying drawing 1 has been drawn basic bidirectional strength and has been neutralized the system schematic diagram.Each work step is can both be one by one on compaction curve corresponding.

Middle-size and small-size crank slide block type full automatic dry powder press is the shaping equipment that integrates mechanical, electrical, liquid, gas, computer control, the industrial trade field that is suitable for is very wide, reasonable in design, compact conformation, favorable working performance, more cheap 1/3～1/4 than the domestic and international product of similar machine, have vast market prospect.

Claims

1, a kind of middle-size and small-size crank slide block type full automatic dry powder press is characterized in that structure comprises casing part, drive part, transmission mechanism, press portion, demoulding part, roof pressure part, entablature part, feeding part, hopper material boots part, crosses the amount of owing part;

The chest portion branch comprises column, casing, case lid, respirator, case, mould bases seat, case lid is contained on the casing, case lid and casing are by being threaded, case is contained in casing one side, and respirator is contained on the column, and two root posts install respectively in the case lid both sides, the mould bases seat is contained on the column, and lubricating oil is housed in the casing;

Drive part comprises motor, small belt pulley, big belt pulley, driving-belt, clutch, decelerator; Motor mounting is on casing rear side motor mount, and reductor is installed in the case of casing side, and clutch device is on the deceleration arbor, and by the variable-frequency motor power output, transmission is passed through small belt pulley, driving-belt, big belt pulley, clutch to reductor;

Transmission mechanism comprises duplicate gear, power transmission shaft, left and right gear wheel, eccentric wheel, sliding bearing, left and right connecting rod, yoke, left and right pull bar, rotary encoder, left half axle, right axle shaft, center-pole, T shape piece, worm gear case, die restoring board; Power transmission shaft is contained on the casing by sliding bearing, power transmission shaft is provided with duplicate gear, power transmission shaft and duplicate gear are one, left half axle and right axle shaft are contained on the casing, sliding bearing is installed on the left and right connecting rod, eccentric wheel is contained in the sliding bearing, two eccentric wheel endoporus match with left half axle, right axle shaft respectively, left and right gear wheel is contained in two eccentric wheel inner shafts respectively and puts, yoke is contained in main the pressure on the beam, link to each other with connecting rod by sliding bearing, the die restoring board is equipped with in the center-pole lower end, and worm gear case is equipped with on center-pole top, and T shape piece is equipped with in the center-pole upper end; The upper end of pull bar connects entablature, and entablature connects the upper junction plate of mould bases again, connects the upper punch of mould again;

Press portion comprises main beam, recessed crossbeam, press strip, compacting cam, compacting slide block, adjustment axle, worm gear, worm screw, worm shaft, gear wheel, pressing stroke piece, the compacting support of pressing; Recessed crossbeam is contained on the center-pole, and main the pressure between beam and the recessed crossbeam is equipped with press strip, and the compacting cam is contained on the gear wheel, and the compacting slide block is contained on the recessed crossbeam, adjusts axle and is contained on the casing, adjusts axle and is used to regulate pressing stroke;

The demoulding partly comprises regulating shaft, two bevel gears, major axis, gear, gear wheel, demoulding crossbeam, demoulding cam, demoulding slide block; Gear wheel is connected by contiguous block with demoulding crossbeam, the internal thread of gear wheel matches with the external screw thread of center-pole again, demoulding cam matches with demoulding slide block, demoulding slide block is contained on the center-pole, gear is connected with major axis by key, gear and gear wheel match, and major axis one end is equipped with bevel gear, and bevel gear is housed on the regulating shaft matches;

Top-pressure mechanism comprises roof pressure piston, airdraulic actuator, valve plate, roof pressure guiding mechanism; Gas-liquid bag, overflow valve, Pressure gauge, check valve are housed on the valve plate, and airdraulic actuator is fixed on main the pressure on the beam, and the airdraulic actuator oil-in links to each other with the valve plate oil-out by oil pipe, and device has roof pressure piston, piston rod in the oil cylinder;

The gas-liquid pack arrangement has the gas-liquid tank body, the interior device of gas-liquid tank body has hydraulic oil, gas-liquid tank body top is provided with loam cake, the gas-liquid tank body is provided with air inlet, oil-out, oil level monitor, air inlet links to each other with source of the gas by pipeline, oil-out links to each other with the valve plate oil-in by pipeline, is provided with fluid pressure line in the valve plate;

The roof pressure guiding mechanism comprises adjusts axle, gear, axle, sprocket wheel, bevel gear, major axis, adjustment gear, roof pressure control agent; Rotate and adjust axle, driven gear, axle key is connected on the sprocket wheel, be transferred to little axle by chain, the other end of little axle connects bevel gear, is transferred to major axis by gear pair, the cross section of major axis is square, and also cut square hole on the pinion stand, and to adjust gear to fix by alignment pin and pinion stand, roof pressure control agent, pinion stand, adjustment gear are fixed by screw;

Entablature partly comprises entablature, piston, sleeve, hydraulic die cushion piston, worm shaft, worm gear, adjustment motor; Piston is contained in the sleeve, sleeve is contained on the entablature, the hydraulic die cushion piston is contained in upper cartridge, adjust motor and be contained in entablature one side, worm shaft, worm gear are contained on the entablature, adjust motor output shaft by a pair of bevel gear transmission worm shaft, and entablature is connected with the main beam of pressing by pull bar, piston is connected with upper punch by screw

Feed mechanism comprises clamping cylinder, long-armed, feeding arm, feeding cam; Clamping cylinder one end be fixed on long-armed on, the other end is fixed on the column, the feeding arm links to each other with long-armed, feeding cam is contained on the semiaxis, the feeding arm links to each other with feeding cam by pinch rollers;

Hopper material boots partly comprise hopper, material boots, material pipe, material boots clamping cylinder, feeding rod; Material boots clamping cylinder one end is fixed on that the other end links to each other with feeding rod on the lathe bed, and the feeding rod front end is connected with the material boots;

Cross and owe measuring mechanism and comprised the amount of owing cylinder, lever, lever dolly, roller; Cross the amount of owing cylinder and be installed on the lever by oscillating bearing, lever is contained on the lever dolly, and lever dolly is fixed on the casing by screw, and roller is pressed on the pressing stroke gag lever post, and the pressing stroke gag lever post is connected with the compacting limited block by screw thread.

2, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1 is characterized in that the belt tension mechanism of drive part adopts the fine setting motor mount, and the motor installing hole is fixed on the mount pad.Motor mount then has been out two kidney slots, and by the bolting motor, the motor side has two to adjust seat, is fixed on the mount pad by screw, adjusts the middle screw that screws in two of seat, withstands the motor side.

3, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1, the power transmission shaft that it is characterized in that transmission mechanism links to each other with reducer output shaft, duplicate gear that power transmission shaft is provided with and the engagement of left and right gear wheel, left and right gear wheel drives wobbler action, and eccentric wheel has been formed a slider-crank mechanism by sliding bearing, left and right sides connecting rod, yoke, left and right sides pull bar.

4, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1 is characterized in that rotary encoder apparatus on right axle shaft, and the left end of left half axle connects feeding cam.

5, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1 is characterized in that the two ends, the left and right sides of die restoring board connect two reset cylinders, the anti-bottom half that is hung in of reset cylinder with oscillating bearing.

6, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1, it is characterized in that rotating regulating shaft, engagement by two bevel gears drives the major axis rotation, gear is connected with major axis by key, drive gear wheel by gear drive again, gear wheel is connected by contiguous block with demoulding crossbeam, and the internal thread of gear wheel matches with the external screw thread of center-pole.

7, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1, it is characterized in that the overflow valve device is on valve plate, be connected with the fluid pressure line on the valve plate, overflow valve is the oil return valve of top pressing system, the overflow valve import is connected with oil cylinder by fluid pressure line in the valve plate, and the overflow valve outlet is connected with the gas-liquid bag by fluid pressure line in the valve plate; Check valve apparatus is on valve plate, check valve inlet contracts out hydraulic fluid port by fluid pressure line on the valve plate and gas-liquid and is connected, check valve outlet is connected with oil cylinder by the fluid pressure line on the valve plate, and pressure meter device is being connected with the oil-out of fluid pressure line on the valve plate on the valve plate.

8, middle-size and small-size crank slide block type full automatic dry powder press according to claim 1 is characterized in that expecting that the boots clamping cylinder is a single-acting cylinder.