Friction press, screw press with friction drive, is more widely used within the machinery manufacturing trade. The pressure of the pistons 13, thirteen’ is predetermined by charging the dynamic oil accumulator 14 (with a sort of inert fuel charge) with the strain of the oil dynamic circuit derived from the pump 18 limiting it and discharging it with the utmost stress valve sixteen’. At present, the company’s products mainly include: Friction Screw Press;J53, J54 collection of double disc friction screw press; J67, J93 sequence of refractory press; EP collection of electrical screw press; MP series of sizzling forging press. The force applied throughout this section is, therefore, regulated by a pressostat which instructions (on the similar time with the timer and with the aim of disconnecting the intervening elements) the valves 56 and 57, respectively, shut the valves sixty one and 61′ of rapid discharge of the pistons 2 and a couple of’. We’re main industrial press machine provider, specializing in production of high quality press machines for sale, supply producer price press machine and refractory brick press for patrons, contact us for prompting your order. The time period of the prior part 36 could also be modified, by altering the moment of stroke of the flywheel, for example, by a set sign attached to the ear plus a regulated timer, in such a manner that the stress of the screw reaches the worth when the air is taken out from the mass to be pressed, with out unnecessary delays. In this situation, the screw spindle and the associated flywheel operate to execute solely the second comparting step and may be thrown from their highest place with a coordinate anticipation and using a decreased energy motor capable of impart the due kinetic energy in additional than a whole turn of the flywheel instead of in a quarter flip. The lifting capacity is 200tons, and we can assemble series press machine with nominal force from a hundred and sixty tons to 8,000 tons Faithfulness, deploitation, innovation and good service is our fundamental managing precept. Business Profile : Producers of Friction Screw Presses, Forging Press & Power Press. The management means for stated motor means embody means in a position to anticipate the beginning of the lowering displacement of the flywheel and screw in order that the second compacting step is performed directly immediately after the elastic return of the powder materials. Friction Screw Press Down Stroke is manufactured using excessive grade stainless-steel materials which supplies it a highly sturdy service life. The pressure applied to the mass during this final part is given by the burden of the beam 3 plus the pressure of the pistons 5-5′, minus the pressure exerted by the pistons thirteen and 13′, which is opposite to the prior one, minus the eventual pistons 16″.
1. A flywheel and screw press for producing ceramic articles comprising, together, a base having an upper surface; a hard and fast head; assist means supporting stated fixed head in mounted place upwardly spaced from stated higher floor of said base; a movable beam located within the space between stated higher surface and mentioned mounted head and being guided on said help means for motion toward and away from said higher floor; mould means carried by said base and provided with cavities open upwardly for receiving a cost of ceramic powder materials, punch means carried by stated movable beam and designed to cooperate with mentioned cavities for forming ceramic articles, a first pair of hydraulic piston means carried by said base and offered for imparting an upwardly directed thrust to stated movable beam; a second pair of hydraulic piston means carried by mentioned fixed head and offered for imparting a downwardly directed thrust to mentioned movable beam, mentioned first and second pair of hydraulic piston means cooperating for controlling the downward stroke of said movable beam for imparting to the powder within the cavities a gentle pre-compression inflicting a primary thickness discount of the powder mass and an considerable expulsion of the air enclosed; a 3rd pair of hydraulic piston means carried by mentioned mounted head and controlled for performing on the movable beam and performing the primary compacting step after the comfortable pre-compression; a fourth pair of elastically compressible hydraulic piston means carried by stated base and provided with adjustable rod ends and in a position to intervene with stated movable beam when the latter is further lowered throughout mentioned first compacting step for impressing to said movable beam an upwardly directed thrust serving to the elastic return of the compacted powder mass to boost stated movable beam immediately after stated first compacting step, allowing the expulsion of the remaining air; a flywheel disposed above mentioned fastened head, a screw threadedly engaged to mentioned flywheel and carried by stated fixed head; motor means offered for alternatively imparting to mentioned flywheel and screw rotation in a single and within the different direction for decreasing and elevating stated flywheel and screw, and control means for controlling stated motor means to function said flywheel and screw within the lowering path in due time for impacting mentioned movable beam and performing a strong second and ultimate compacting step of the powder material immediately after the elastic return of the powder material; and hydraulic circuit means for well timed controlling and energizing all the pairs of stated hydraulic piston means, mentioned hydraulic circuit means, interconnecting all the pairs of stated hydraulic piston means.
The invention pertains 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 higher cross member of the press body, wherein the flywheel has exterior toothing to a width akin to the utmost press stroke plus the width of the driving pinion, a plurality of pinions partaking in the stated toothed rim are each pushed 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, lines forty and forty one are consultant of the screw stroke, and lines 30, 31, 31′, 33, 34, 35, 36 and forty three are representative of the stroke of beam three. In a excessive place 30 the beam three is supported by the pistons 9 and 9′ in opposition to 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 burden of the beam 3 and the power 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 Electrical Screw Press for the refractory trade. Shortly earlier than the top of the downward stroke of the spindle 9 the rotational pace of the pump 27 and therefore the rotational pace of the flywheel 17 and the spindle 9 are lowered to zero throughout the remainder of the stroke of the spindle 9. When the rotational velocity is lowered the four-manner valve forty one is displaced from the remainder position to the correct and the line 42a is linked to a second strain-limiting valve 43. The stress which may be regulated by the pressure-limiting valve forty three limits, by the use of the pressure-limiting valve forty two, the pressure present in the pipeline 31 to the braking stress required for braking the flywheel 17. Concerning the present pressing machines, the variety of strokes achieved between the washing phases of the moulds, is from 2 to 3 occasions as nice. Since the electrical motors are twice accelerated from rest to the required rotational velocity and braked again throughout each working cycle, correspondingly high present warmth losses are unavoidable and in addition the idle power absorbed by the motor is disadvantageous. Experimentally, with a urgent machine in accordance with the present invention, it would be observed that the required energy for the primary pressing operation, with predetermined lots of ceramic, will be fairly low, approximately 10-12,000 kg., against the 400,000 Kg of the second pressing operations, which is kind of completely different from the present urgent machines, which require about 50 to 150 tons for the first pressing step.
In accordance with the invention, there is provided a flywheel and screw press for producing ceramic articles comprising, in combination, a base having an upper surface, a hard and fast head, help means supporting the mounted head in fastened place upwardly spaced from the higher floor of the base, a movable beam positioned within the house between the upper surface and the fixed head and being guided on support means for movement toward and away from the higher floor, mould means carried by the bottom and provided with cavities open upwardly for receiving a cost of ceramic powder material, 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 base and offered for imparting an upwardly directed thrust to the movable beam, a second pair of hydraulic piston means carried by the mounted head and supplied for imparting a downwardly directed thrust to the movable beam, the primary 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 smooth precompression causing a first thickness discount of the powder mass and an considerable expulsion of the air enclosed therein, a third pair of hydraulic piston means carried by the fastened head and controlled for appearing on the movable beam and performing the primary compacting step after the tender precompression, a fourth pair of elastically compressible hydraulic piston means carried by the base and provided with adjustable rod ends and in a position to interfere with the movable beam when the latter is further lowered in the course of the first compacting step for impressing to the movable beam an upwardly directed thrust helping the elastic return of the compacted powder mass to lift the movable beam instantly after the first compacting step, permitting the expulsion of the remaining air, a flywheel disposed above the fastened head, a screw threadably engaged to the flywheel and carried by the fastened head, motor means offered for alternatively imparting to the flywheel and the screw rotation in a single and within the other path for lowering and elevating the flywheel and screw, and control means for controlling the motor means to function the flywheel and screw within the reducing route in due time for impacting the movable beam and performing a robust second and ultimate compacting step of the powder material 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 the entire pairs of the hydraulic piston means.
Furthermore, the sum of the occasions inherent to the first and second urgent step impeded discount of the period of a complete compacting cycle; and, the interval was always higher than three seconds. In response to the exemplary embodiment an axial piston motor 26 (fastened displacement motor) and an axial piston pump 27 (variable displacement pump), i.e. axial piston machines, are offered as these are essentially the most appropriate. During the fast up motion of beam 3 because of the pistons 9 and 9′, the oil retained in the pistons 2 and a couple of’ is forced to exit by the valves sixty one and 61′ (FIGS. For the working stroke and the return stroke of the spindle 9 the extent of pivoting is restricted to a pivot angle which corresponds to the rotational velocity of the spindle desired in each case and which determines the delivery of the pump 27 at a relentless rotational pace of the electric motor 28. A piston-cylinder arrangement, which is acted upon, by way of the management 36, by a pump 39 driven by an electrical motor 38 at the side of a pressure accumulator 40, acts because the actuating drive 37. Pistons 9, 9′ could also be mounted on base seventy two for operative engagement of the plungers thereof with beam three for the return stroke of the beam 3 after the urgent cycle, and the consequent emptying of the chambers related to the 2 pistons 2, 2′. Disadvantages of Friction Disk Screw Press: lengthy transmission chain and high power consumption, more fast-wear elements,not accurate controlling and labor-intensive, noisy, unsafe, and so forth. The press, with easy in structure, giant vitality, low noise, lengthy life, protected and dependable in operation, convenient service and so forth, can be widely utilized in aviation, auto, tractor, software manufacturing, textiles equipment industries and so on. Refractory Recycling Crusher refractory price of set up in uaecement Basalt Crusher CELLULAR CRUSHER Cell Crusher concrete recycling; crushing gear; coal mining tools; sand making machine; about refractory value of installation in uaecement. Double-disk Friction Screw Press In Uganda. In accordance with the present invention, if there isn’t a inversion of the flywheel between the primary and second urgent operation, there’s much less wear and a minor use of power to operate the press. This computerized electrical screw press is a a number of useful fire bricks molding machine. This advantageously signifies that the torque applied to the flywheel could also be thrown by a motor immediately and coaxially mounted on the flywheel, and not by a disc friction system.
Thus, in accordance with the invention, there may be offered a flywheel and screw press for producing ceramic articles comprising, together, a base 72 having an higher floor; a fixed head 71; help means 73, 73 supporting stated fixed head seventy one in mounted position upwardly spaced from mentioned upper surface of said base seventy two; a movable beam three situated in the area between mentioned higher surface and said mounted head seventy one and being guided on mentioned support means seventy three, 74 for movement toward and away from mentioned upper floor; mould means carried by mentioned base seventy one and provided with cavities open upwardly for receiving a charge of ceramic powder material, punch means carried by stated movable beam 3 and designed to cooperate with mentioned cavities for forming ceramic articles, a first pair of hydraulic piston means 9, 9′ carried by said base seventy two and supplied for imparting an upwardly directed thrust to stated movable beam 3; a second pair of hydraulic piston means carried by stated mounted head and offered for imparting a downwardly directed thrust to stated movable beam three, mentioned first 9, 9′ and second 6, 6′ pair of hydraulic piston means cooperating for controlling the downward stroke of mentioned movable beam 3 for imparting to the powder within the cavities a comfortable pre-compression inflicting a primary thickness reduction of the powder mass and an considerable expulsion of the air enclosed; a 3rd pair of hydraulic piston means 5, 5′ carried by said mounted head 7 and controlled for appearing on the movable beam three and performing the primary compacting step after the tender pre-compression; a fourth pair of elastically compressible hydraulic piston means thirteen, 13′ carried by stated base seventy two and supplied with adjustable rod ends and capable of interfere with said movable beam three when the latter is further lowered during stated first compacting step for impressing to mentioned movable beam 3 an upwardly directed thrust helping the elastic return of the compacted powder mass to lift mentioned movable beam three immediately after stated first compacting step, permitting the expulsion of the remaining air; a flywheel 7″ disposed above mentioned mounted warmth seventy one, a screw 7′ threadedly engaged to mentioned flywheel 7″ and carried by stated fastened head seventy one; motor means 7 offered for alternatively imparting to stated flywheel 7″ and screw 7′ rotation in a single and within the different direction for reducing and elevating flywheel and screw, and control means for controlling said motor means 7 to function mentioned flywheel and screw within the lowering route in due time for impacting stated movable beam three and performing a strong second and ultimate compacting step of the powder materials immediately after the elastical return of the powder material; and hydraulic circuit means for well timed controlling and energizing all the pairs of stated hydraulic piston means, stated hydraulic circuit interconnecting all of the pairs of mentioned hydraulic piston means.
In such a approach, the power applied to the mass to be pressed in the course of the part 36 could range, from zero (instantly raising the moulds relating to the mass) up to the worth given by the load of the beam plus the pistons 5 and 5′, with out interruption. Refractory Brick Screw Press Introduction Refractory screw press is a sort of press machine in which the ram is driven up and down by a screw,which have the benefits of small volume,wanting transmission chain,simple operation. Producer of Disc Friction Screw press machine utilized in manufacturing clay tiles, refractory bricks, Clay bricks and so forth. Our Friction Screw Press could be available in various customized options. The line 35 (level 38) represents the equilibrium point between the total pressure utilized by the burden of the beam plus the action of the pistons 5 and 5′, plus the action of the pistons 2 and a couple of’, minus the action of the pistons 13 and thirteen’ however only with laws at a satisfactory level (and, in case of utilization of the mirror type mould, the power of the pistons sixteen”). The leading firm in China having been specialised in manufacturing forging hydraulic press,forging manipulator,ring rolling mill,cross wedge rolling mill,electrical power press,friction screw press,etc for over a few years. On this step, consequently, an important portion of the kinetic powerimpressed on the flywheel was misplaced. Business Profile : We’re Manufacturers and dealers of Energy Presses, Friction Screw Presses & Auto Feed Presses, C Kind Energy Press, Friction Screw Press, Energy Press, H Frame Piller Kind Press and Hydraulic Mechanical Shearing Machine. For the impact of the kinetic energy amassed on the flywheel 2″ in the course of the stroke and which is discharged for the time being of contact with the prepressed and already without air mass, the extent 39 develops a strong instantaneous strain, with a period of, roughly, thirty-5 thousandths of a second. 3. A flywheel and screw press in keeping with claim 1, whereby stated flywheel and screw are movable from an upper position and a decrease position, the latter being the place whereby the second compacting step is carried out, the house from the higher and the lower place being such that the flywheel and the screw should rotate at about a turn for moving from one to the other position. Since our inception, we are engaged in manufacturing a classy array of Friction Screw Press, that are designed to be dependable, environment friendly and exact for Sizzling Forging of Steel, Brass, Aluminium to our esteemed clients.
A compelled lubricating system will feed the lubricate oil into the closed screw-nut system via special pipeline, and type an oil display screen between every touching elements to reduce the parts friction when press works. A plurality of pinions participating within the stated toothed rim are every pushed by an oil-hydraulic axial piston motor 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 upper cross member of the press body. No. three,359,608, issued to the present inventor, discloses a friction and screw press for the manufacture of ceramic articles. In keeping with the data present: knowledge disparity, as a result of the double-disc friction press operation will exist when stealing hammer, missing hammer phenomenon, the output shall be floater than the CNC electrical screw press, however in line with the provisions of the corporate to suppress the hammer merchandise, Two sorts of stress brick equipment production are comparable. Furthermore, it is possible to regulate the motion of the flywheel 7″ and screw 7′ by operating a hydraulic motor 7, having a comparatively lowered dimension, put in on the beam eight to maneuver the screw 7 by way of a detachably coupled system which is hydraulically interconnected to pistons 9, 9′. Line forty one illustrates the return of the screw, which has to be thrown in an up movement with a power of much less worth than that provided for the elastic return of the construction of the pressing machine. The stress exerted by the screw 7′ on the fabric could also be predetermined in an actual manner, with the possibility of utilizing limited torque generators for the stroke of the flywheel, akin to hydraulic motors, electric motors or friction motors with restricted torque comparatively to the motor used up to this moment. Throughout the acceleration phases for the downward movement and the upward motion of the spindle 9 the electric motor 28 operates with approximately fixed energy and fixed rotational pace which ensures a high degree of electrical efficiency of the motor 28. The fixed motor power is transformed and fully utilized by the oil pump 27 operating as a torque converter. Mentioned circuit further comprising management means for controlling the pressure of the hydraulic fluid fed to stated motor means and a plurality of strain phases, one in every of said phases being controllable as braking pressure for said flywheel, and a refill pump means for returning leaked hydraulic fluid to mentioned circuit.