The price of the next electric motor drive capability


26 May

Although the benefit, of reduced price and larger reliability are achieved at the price of the next electric motor drive capability, since the substantial load compensation made doable by the hydraulic accumulator within the case of the previous type of drive with a central oil supply is absent, the electrical disadvantages (in particular excessive load peaks, extra installations for limiting them, idle power of the motors) and the structural disadvantage of the spindle bearing within the case of a purely electrical drive are averted, and with respect to the operational reliability in the case of the oil-hydraulic drive any drawback as a consequence of provision of additional hydraulic parts (oil pumps and control means for every oil motor or pair of oil motors associated with a pinion) is greater than compensated by the absence of the high-strain oil ducts, specifically of the versatile portions compensating the actions of the press. Said pressostat 19, when energized, determines the top of the HP (high strain) step, deenergizing the valves 20 and 17. Our ultra precision computerized china press machine has the traits of simple construction, adjustable stress, excessive degree of automation and productivity. In summary the operation of the inventive press utilizes first piston means 9, 9' to maneuver the beam upwardly or retract the beam from the bottom, second piston means 5, 5' for moving the beam downwardly toward the bottom into its operating position, and third piston means 2, 2' for exerting a further downward drive on the beam to move the beam toward the bottom and compress the ceramic powder to release air therefrom. Our press can save about 50% energy than friction press, so it might probably cut down giant cost. Enterprise Profile : We're Producers and suppliers of; Forging Presses, Friction Screw Press, Press Power Presses, Energy Press Pillar Kind, Power Press C Type. With a view to produce one superior and power saving Screw Press for refractory business, Mr. Tian Jiangtao, the president of our company dedicated to research and develop this new variety Electrical Screw Press, which was the revolution of refractory gear, stated by Mr. Xu Dianli, the Cheif Secretary of China Refractory Affiliation.


The invention relates to a screw press having a flywheel rotationally related to the spindle by the use of a friction coupling and a spindle displaceable axially in a nut mounted in the upper cross member of the press body, wherein the flywheel has external toothing to a width similar to the utmost press stroke plus the width of the driving pinion, a plurality of pinions partaking within the mentioned toothed rim are every driven by oil-hydraulic axial piston motors or by a pair of oil-hydraulic axial piston motors and the axial piston motors together with the pinions are disposed on a platform surrounding the higher cross member of the press body. three, traces forty and forty one are consultant of the screw stroke, and contours 30, 31, 31', 33, 34, 35, 36 and 43 are representative of the stroke of beam 3. In a high position 30 the beam 3 is supported by the pistons 9 and 9' against the adjustable plunger heads 6" and 6'" of the pistons 6 and 6'. The ability of the pistons 9 and 9' is such that it exceeds the load of the beam three and the drive of the pistons 5 and 5'. This new structure is based on the refractory forming characters, which is our company developed based mostly on SD20 Collection Electric Screw Press for the refractory industry. Shortly before the top of the downward stroke of the spindle 9 the rotational speed of the pump 27 and therefore the rotational velocity of the flywheel 17 and the spindle 9 are reduced to zero during the remainder of the stroke of the spindle 9. When the rotational pace is decreased the four-means valve forty one is displaced from the rest position to the fitting and the line 42a is connected to a second pressure-limiting valve forty three. The stress which can be regulated by the strain-limiting valve 43 limits, by way of the pressure-limiting valve forty two, the strain current within the pipeline 31 to the braking strain required for braking the flywheel 17. Relating to the present pressing machines, the number of strokes achieved between the washing phases of the moulds, is from 2 to 3 occasions as great. Because the electrical motors are twice accelerated from rest to the required rotational speed and braked again during every operating cycle, correspondingly excessive current heat losses are unavoidable and also the idle energy absorbed by the motor is disadvantageous. Experimentally, with a urgent machine in accordance with the present invention, it might be observed that the mandatory energy for the primary urgent operation, with predetermined masses of ceramic, will be quite low, approximately 10-12,000 kg., towards the four hundred,000 Kg of the second urgent operations, which is quite totally different from the current pressing machines, which require about 50 to 150 tons for the primary pressing step.


The force of the pistons thirteen, 13' is predetermined by charging the dynamic oil accumulator 14 (with a kind of inert gas cost) with the strain of the oil dynamic circuit derived from the pump 18 limiting it and discharging it with the utmost pressure valve sixteen'. At present, the corporate's products primarily embrace: Friction Screw Press;J53, J54 collection of double disc friction screw press; J67, J93 series of refractory press; EP series of electric screw press; MP sequence of hot forging press. The power applied during this phase is, therefore, regulated by a pressostat which instructions (at the identical time with the timer and with the purpose of disconnecting the intervening parts) the valves fifty six and 57, respectively, close the valves sixty one and sixty one' of speedy discharge of the pistons 2 and 2'. We're leading industrial press machine provider, specializing in manufacturing of top quality press machines on the market, provide producer worth press machine and refractory brick press for consumers, contact us for prompting your order. The time period of the prior part 36 may be changed, by altering the moment of stroke of the flywheel, for example, by a fixed sign connected to the ear plus a regulated timer, in such a means that the pressure of the screw reaches the worth when the air is taken out from the mass to be pressed, with out pointless delays. In this condition, the screw spindle and the related flywheel perform to execute only the second comparting step and could also be thrown from their highest place with a coordinate anticipation and using a reduced power motor able to impart the due kinetic power in more than a whole turn of the flywheel instead of in 1 / 4 turn. The lifting capability is 200tons, and we are able to assemble sequence press machine with nominal drive from a hundred and sixty tons to eight,000 tons Faithfulness, deploitation, innovation and good service is our primary managing precept. Enterprise Profile : Manufacturers of Friction Screw Presses, Forging Press & Energy Press. The control means for said motor means include means able to anticipate the beginning of the reducing displacement of the flywheel and screw in order that the second compacting step is performed without delay immediately after the elastic return of the powder materials. Friction Screw Press Down Stroke is manufactured using high grade stainless-steel materials which provides it a extremely durable service life. The drive utilized to the mass throughout this last phase is given by the burden of the beam 3 plus the stress of the pistons 5-5', minus the force exerted by the pistons 13 and 13', which is contrary to the prior one, minus the eventual pistons 16".


Enterprise Profile : Krishan Products is Serving the Machine instruments Industry and is likely one of the pioneer Producers of 'KRISHAN' brand Power presses, C- kind energy presses, Pillar type power presses, Friction screw presses and press brakes in Guide & Mechanical. A compact design and a rise in operational reliability are achieved if, each axial piston motor or every pair of axial piston motors which is associated with a pinion and the associated reversible pump are disposed in a closed circuit which also accommodates the control means for feed pressure and a number of-stage stress controllable in a single stage as braking stress and which is linked to a refill pump. In an effort to scale back the funding for production gear, we are able to additionally make the modification from outdated type friction screw press to new electric screw press. Capability of forging hydraulic press we've made is up to 50000 tons and as much as a hundred and twenty tons for manipulator and up to 8 meters in diameter for ring rolling mill. No. 3,359,608 chambers of the pistons 2, 2' are fed by an illustrative circuit, which gives a managed oil volume at excessive stress, or strain regulation via a "pressostat" 18 or 19, shown in FIG. The element of the first pressing operation is disposed coaxially reverse to the compacting piston or beam 3 on base 72, if the principle urgent element is a hydraulic piston. The thing of the invention is to cut back the structural value of these screw presses similtaneously rising operational reliability. A screw press has a flywheel rotationally linked to the press spindle by means of a friction coupling. Every circuit can have associated with it its personal oil tank 32, or the circuits of one half of the press or all of the circuits can have a typical oil tank 32. The platform 25 is formed as a trough 33 with internal aspect partitions 33i, outer aspect partitions 33a and the bottom 33b, the trough 33 supporting the entire oil hydraulic system and being adequately dimensioned to obtain all the oil current in the oil circuit. The highest countries of suppliers are India, China, from which the percentage of friction screw press machine provide is three%, 96% respectively. Double-disk friction screw press is a generally used friction screw press which is extensively used for compression moulding of die forging, extrusion, scrap cut, bending, revision and refractory of ferrous and non-ferrous metallic.


Is knowledgeable production of electrical screw press, friction press, hot forging press producers. The time of this part is a perform of the regulated strain and of the response of the mass to be pressed and of the characteristics of the hydraulic circuit. For this objective the oil pump 27 is provided with a stress gauge 35 and an actuating drive 37 which is actuated as a operate of stress by means of a management 36 and which in the case of an axial piston pump ideally used on this connection causes the piston axes to pivot in the direction of the drive axis. As the flywheel had to acquire an important kinetic energy in the rotation of one-quarter flip, a big horsepower motor was mandatory and the friction means have been consumed in a short working time. Our well known firm is actively engaged in manufacturing and suppling an array of Forging Equipment. The portion 13 and thirteen' is such that bind the power of the pistons 5 and 5' and of the load of the beam when a earlier charge is given from the accumulator 14 with all stress of the circuit of the pump 18. Forging Machinery Manufacturing Co. It is understood that in operation the hydraulic fluid within the chambers of pistons 9, 9' is discharged and the beam three is lowered. 3000kn Forging Press,J53-300c Double Disc Friction Screw Press,Brass Valve Forge Machine , Discover Full Particulars about 3000kn Forging Press,J53-300c Double Disc Friction Screw Press,Brass Valve Forge Machine,Hot Forging Press,Steel Forging Machine,Hydraulic Forging Press from Other Steel Metallurgy Machinery Provider or Manufacturer-Liaoyang Pharma Equipment Imp. Friction Screw Press for refractory's hearth bricks with floating desk 2 Pillers and 4 Pillers. FRICTION SCREW PRESSES are used for Hot Forging of Metal, Brass, Aluminium and plenty of different Alloy Steel. On machines using the Vincent principle, the screw nut is positioned within the high cross head of a body sort ram. No. three,359,608, the motion of the pistons 2, 2' and the action of the screw 7', is completed by electronic means, with the use of temporizer parts, which may be regulated with a view to achieve the shortest possible interval between one and the other motion, evaluating with the characteristics of the fabric to be pressed. The above-talked about diameters are good for a pressing machine with a net pressing energy of 400 to 500 tons. By the hydraulic motor three it's potential to regulate the velocity of the flywheel 2" and, consequently, the urgent force of the screw 7', for the purpose of compacting.


In accordance with the invention, there's supplied a flywheel and screw press for producing ceramic articles comprising, in combination, a base having an upper surface, a fixed head, support means supporting the mounted head in mounted position upwardly spaced from the higher surface of the bottom, a movable beam positioned in the area between the higher floor and the fixed head and being guided on help means for movement towards and away from the higher floor, mould means carried by the base and supplied with cavities open upwardly for receiving a charge of ceramic powder materials, punch means carried by the movable beam and designed to cooperate with the cavities for forming ceramic articles, a primary pair of hydraulic piston means carried by the bottom and offered for imparting an upwardly directed thrust to the movable beam, a second pair of hydraulic piston means carried by the fixed head and offered for imparting a downwardly directed thrust to the movable beam, the first pair and the second pair of hydraulic piston means cooperating for controlling the downward stroke of the movable beam for imparting to the powder within the cavities a mushy precompression inflicting a primary thickness reduction of the powder mass and an considerable expulsion of the air enclosed therein, a 3rd pair of hydraulic piston means carried by the fastened head and managed for appearing on the movable beam and performing the first compacting step after the gentle precompression, a fourth pair of elastically compressible hydraulic piston means carried by the bottom and supplied with adjustable rod ends and capable of intervene with the movable beam when the latter is additional lowered in the course of the first compacting step for impressing to the movable beam an upwardly directed thrust serving to the elastic return of the compacted powder mass to boost the movable beam instantly after the first compacting step, permitting the expulsion of the remaining air, a flywheel disposed above the mounted head, a screw threadably engaged to the flywheel and carried by the fastened head, motor means supplied for alternatively imparting to the flywheel and the screw rotation in one and within the different direction for lowering and elevating the flywheel and screw, and management means for controlling the motor means to operate the flywheel and screw in the decreasing direction in due time for impacting the movable beam and performing a strong second and supreme compacting step of the powder materials immediately after the elastic return of the powder material, and hydraulic circuit means for timely controlling and driving all of the pairs of the hydraulic piston means, the hydraulic circuit means interconnecting all the pairs of the hydraulic piston means.


In such a means, the drive applied to the mass to be pressed during the phase 36 may fluctuate, from zero (instantly raising the moulds concerning the mass) up to the worth given by the burden of the beam plus the pistons 5 and 5', without interruption. Refractory Brick Screw Press Introduction Refractory screw press is a type of press machine by which the ram is driven up and down by a screw,which have the advantages of small volume,in need of transmission chain,simple operation. Producer of Disc Friction Screw press machine used in manufacturing clay tiles, refractory bricks, Clay bricks and many others. Our Friction Screw Press may be accessible in varied customized choices. The road 35 (stage 38) represents the equilibrium level between the overall stress applied by the burden of the beam plus the action of the pistons 5 and 5', plus the action of the pistons 2 and 2', minus the action of the pistons 13 and thirteen' however only with rules at a satisfactory stage (and, in case of utilization of the mirror sort mould, the power of the pistons sixteen"). The leading company in China having been specialised in manufacturing forging hydraulic press,forging manipulator,ring rolling mill,cross wedge rolling mill,electrical energy press,friction screw press,and many others for over a few years. In this step, consequently, an important portion of the kinetic powerimpressed on the flywheel was lost. 

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