The present invention relates to a recoating device which performs the function of uniformly applying powder in a powder bed-type 3D printer, and a 3D printer including the recoating device. A recoating device of the present invention includes a flattening blade for generating a flow of powder in the direction perpendicular to the direction in which the recoating device progresses, and thus can uniformly flatten powder even if, depending on the position, a non-uniform amount of powder is discharged from the front of the recoating device.
The present invention relates to a powder distribution device that can uniformly distribute powder using powder flow due to the weight of the powder itself, and a 3D printing device including the same. The powder distribution device of the present invention comprises a powder distribution unit that includes: an outer frame having an empty powder material inlet port; and at least one distribution plate disposed inside the outer frame to disperse introduced powder, wherein the powder can be broken down using the powder flow without additional power from a feed screw, a motor, or the like.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
3.
THREE-DIMENSIONAL LAYERING CONTROL SYSTEM, THREE-DIMENSIONAL LAYER MANUFACTURING METHOD, AND THREE-DIMENSIONAL LAYERED PRODUCT MANUFACTURED THEREBY
The present invention relates to a 3D model dividing and layering control system and method which, in a method for forming a three-dimensional shape by spraying a layering material having a predetermined viscosity or more, minimize stringing which occurs during repeated spraying, through a nozzle, of a layering material and stopping spraying, can improve the layering rate of a three-dimensional shape, can also form the desired three-dimensional shape by layering, inside a specific material, a material having a viscosity different from that of the specific material, can readily and simultaneously form a three-dimensional shape inside each of a plurality of containers, and do not require separate washing of a nozzle and replacing of a layering material, and thus the present invention is suitable for a mass production process.
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
Provided are an oil ring for an internal combustion engine and a piston assembly including the same, in which the oil ring for an internal combustion engine includes: a compression portion protruding from an upper portion of a body, in close contact with a cylinder inner wall and effectively limiting explosive gas generated in a combustion chamber; a scraper portion protruding from a lower portion of the body, in close contact with the cylinder inner wall and including a nose scraping off oil oversupplied to cylinder inner wall; and an oil suction portion being a space formed between the compression portion and the scraper portion to collect and discharge the oil oversupplied to cylinder inner wall, thereby reducing leakage of high-temperature and high-pressure gas generated in the combustion chamber, and preventing incomplete combustion caused by oil leaked into the combustion chamber.
The present invention relates to a method for designing a thin-walled casting product, which is hollow and thin, and a thin-walled casting product manufactured therethrough. The method for designing a thin-walled casting product of the present invention comprises the steps of: determining the arrangement direction of the casting product by taking into consideration the injection direction of a casting and the position of a dead head; defining the bottom surface of the thin-walled casting product as the injection direction of the casting and the top surface of the thin-walled casting product as the direction in which the dead head is positioned; setting the top surface wall thickness in the direction in which the dead head is positioned to be greater than the bottom surface wall thickness in the injection direction of the casting; and inducing directional solidification by setting the wall thickness of the side wall, which connects the bottom surface and the top surface, to increase gradually from the bottom surface to the top surface.
G06F 30/17 - Mechanical parametric or variational design
B22C 9/02 - Sand moulds or like moulds for shaped castings
B22D 25/02 - Special casting characterised by the nature of the product by its peculiarity of shapeSpecial casting characterised by the nature of the product of works of art
B28B 1/00 - Producing shaped articles from the material
The present invention relates to a powder distribution device that can uniformly distribute powder using powder flow due to the weight of the powder itself, and a 3D printing device including the same. The powder distribution device of the present invention comprises a powder distribution unit that includes: an outer frame having an empty powder material inlet port; and at least one distribution plate disposed inside the outer frame to disperse introduced powder, wherein the powder can be broken down using the powder flow without additional power from a feed screw, a motor, or the like.
The present invention relates to a 3D model dividing and layering control system and method which, in a method for forming a three-dimensional shape by spraying a layering material having a predetermined viscosity or more, minimize stringing which occurs during repeated spraying, through a nozzle, of a layering material and stopping spraying, can improve the layering rate of a three-dimensional shape, can also form the desired three-dimensional shape by layering, inside a specific material, a material having a viscosity different from that of the specific material, can readily and simultaneously form a three-dimensional shape inside each of a plurality of containers, and do not require separate washing of a nozzle and replacing of a layering material, and thus the present invention is suitable for a mass production process.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
The present invention relates to an oil ring for an internal combustion engine and a piston assembly including same. The oil ring for an internal combustion engine according to the present invention comprises: a compression part protruding from the top portion of the body of the oil ring and coming into close contact with the inner wall of a cylinder so as to effectively restrict expanding gas generated in the combustion chamber; a scraper part including a nose which protrudes from the bottom portion of the body and comes into close contact with the inner wall of the cylinder so as to scrape excess oil supplied to the inner wall of the cylinder; and an oil suction part capable of collecting and discharging the excess oil supplied to the inner wall of the cylinder in a space formed by the compression part and the scraper part. Therefore, the oil ring can reduce leakage of high-temperature high-pressure gas generated in the combustion chamber, and can prevent incomplete combustion due to oil leaking into the combustion chamber.
A riser according to the present invention is a casting riser coupled to a mold and comprises: a body having an inner space for receiving molten metal; and a runner communicating with the inner space and expending from the main body to form a molten metal movement path between the mold and the main body, wherein the body has a structure surrounding the periphery of the runner so that the riser can thermally protect the runner independently, and the body can prevent the runner from being cooled during casting even without any help from a separate heating member or a heat generating material.
The present invention relates to an apparatus and a method for automatically measuring a swirl ratio, and can provide a more reliable automated measurement method by using the swirl ratio automatic measurement apparatus including a valve lift, a dummy cylinder, a surge tank, a flowrate measuring unit, and a blower, and further can effectively measure a plurality of cylinder heads.
G01N 7/10 - Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
F02B 31/04 - Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
Provided is a high pressure piston crown capable of withstanding a higher pressure than the existing piston crown by changing an internal structure of the piston crown reciprocating in a cylinder while being coupled with an upper portion of a piston skirt. The high pressure piston crown includes: a rib part 100 including a plurality of main ribs 110 that are radially disposed, have one side connected to a central portion C of the high pressure piston crown, and have a cross sectional area wider toward an outside of the high pressure piston crown; an oil gallery 200 formed by the rib part 100 and making cooling oil introduced from the piston skirt flow therein; and a lower plate 300 formed under the central portion C and connected to the rib part 100 to have an inside thereof connected to the oil gallery 200.
The present invention relates to a remote-controllable auto-ignition candle and a control system therefor and, more specifically, to a remote-controllable auto-ignition candle comprising: a wick part, which includes a wick combusting after ignition and containing a conductive material; a first communication unit for communicating with a user terminal in a wired or wireless manner; a control unit for controlling an ignition state of the wick part according to a control signal received through the first communication unit; and an ignition means for causing discharge on the wick such that the wick part is ignited according to the control of the control unit.
Provided are a remote controllable auto-ignition candle and a control system thereof, and more particularly, a remote controllable auto-ignition candle including a wick portion performing combustion after ignition and including a wick made of a conductive material; a first communication unit communicating with a user terminal in a wired or wireless manner; a control unit controlling an ignition state of the wick portion according to a control signal received through the first communication unit; and an ignition means generating a discharge to the wick so that the wick portion is ignited according to a control of the control unit.
Provided is an auto-ignition unit for a candle including a wick containing a conductive material, wherein the wick is ignited by a discharge (electric discharge). Further, provided is a candle containing the auto-ignition unit for a candle to thereby be automatically ignited by an electric signal.
The present invention relates to an automatic candle ignition unit comprising a wick containing a conductive material, wherein the wick is ignited by an electric discharge. Further, the present invention relates to a candle comprising a candle ignition unit so as to be automatically ignited by an electrical signal. Further, the present invention relates to a candle wick containing a carbon material. Further, the present invention relates to a candle comprising the candle wick.
H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of metals or alloys
H01B 1/12 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances organic substances
H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
F23Q 3/00 - Ignition using electrically-produced sparks
17.
Carbon material wick for candle and candle including the same
Provided is a wick for a candle including a carbon material. In addition, provided is a candle including the wick for a candle. By using the wick for a candle according to the present invention, it is possible to provide the candle in which a length of the wick combusted at the time of combustion is not long and ash of the wick does not fall.
A composite material according to an embodiment is a sand-based composite material, said sand-based composite material comprising: a sand preform that includes sand particles bound by a binder and is porous due to empty spaces in-between at least sand particles; and a filler that fills and thereby permeates, up to at least a predetermined depth from the surface of the sand preform, the empty spaces in-between the sand particles.
The present invention relates to an alloy cast iron, and a piston ring including the same, the alloy cast iron comprising: a pearlite base; and a graphitized structure precipitated in the pearlite base and a steadite-type process structure, wherein the steadite-type process structure comprises at least one element selected from boron (B) and vanadium (V), at least one element selected from chromium (Cr) and molybdenum (Mo), and copper (Cu).
12 - Land, air and water vehicles; parts of land vehicles
37 - Construction and mining; installation and repair services
Goods & Services
Locomotive internal-combustion engine parts, namely, cylinder heads, cylinder liners, cylinder pistons, cylinders, bearings, pistons, piston carriers, piston pins, piston crowns, valves, seat and exhaust valves, valve spring seats and exhaust valve springs, metal engine gaskets, metal head gaskets and metal gaskets, transmission gears, piston rings, cylinder water jackets, piston skirts, piston pin bolts and piston pin bushings, air compressors, distributors, air distributors and parts thereof, air start valves, engine bearings, anti- friction bearings, bearing bushings and bearing shells, power operated blowers and parts thereof, engine camshafts and parts thereof, engine rods, connecting rods, crank shafts, cylinder test valves, exhaust manifolds for engines, fuel injectors, fuel pumps, hydraulic valve actuators, injector rocker levers, oil pumps, lube oil pumps, mechanical seals, drives for vacuum pumps, quill shafts, turbochargers for internal combustion engines and water pumps for use in motors and engines, sold as a unit; marine internal-combustion engine parts, namely, cylinder heads, cylinder liners, cylinder pistons, cylinders, bearings, pistons, piston carriers, piston pins, piston crowns, valves, seat and exhaust valves, valve spring seats and exhaust valve springs, metal engine gaskets, metal head gaskets and metal gaskets, transmission gears, piston rings, cylinder water jackets, piston skirts, piston pin bolts and piston pin bushings, air compressors, distributors, air distributors and parts thereof, air start valves, engine bearings, anti- friction bearings, bearing bushings and bearing shells, power operated blowers and parts thereof, engine camshafts and parts thereof, engine rods, connecting rods, crank shafts, cylinder test valves, exhaust manifolds for engines, fuel injectors, fuel pumps, hydraulic valve actuators, injector rocker levers, oil pumps, lube oil pumps, mechanical seals, drives for vacuum pumps, quill shafts, turbochargers for internal combustion engines and water pumps for use in motors and engines, sold as a unit Locomotive brake disc [ Maintenance and repair of engines, namely, engine repair and engine refinishing; restoration in the field of diesel engines and locomotives, namely, diesel engine refurbishing services and locomotive refurbishing services; Remanufacture of engines to the order and/or specification of others ]
21.
INTERNAL COMBUSTION ENGINE PISTON ASSEMBLY HAVING MULTIFUNCTIONAL RING
The present invention relates to a piston assembly (1000A, 1000B, 2000) proceeding along a cylinder liner wall, the piston assembly: comprising a ring groove part (101c) into which a multifunctional ring (120) is inserted, wherein the multifunctional ring (120) isolates oil from air, instead of an oil ring, at the lower part of compression ring grooves (101a, 101b) into which a compression ring (110) is inserted; having a basket part (121) formed on the lower surface of the multifunctional ring (120) at a location facing a cylinder liner inner wall; and having a multifunctional ring groove provided at the lower part at which the final compression ring groove of a piston ends.
Disclosed therein is a hollow type crankshaft in which in a state where a hollow member coated thereon with a flux for the fusion-bonding between borax-based hetero-metals are respectively interposed in a crank pin and in a crank journal, the hollow member is cast-bonded to the crank pin and the crank journal, thereby easily bonding the hollow member when the crankshaft is manufactured, greatly increasing rigidity against bending load and torsional load to prolong the lifespan of components, enhancing a vibration-damping force to reduce an engine noise, and further increasing rigidity by inserting a rigid shaft into a hollow part of the hollow member. The hollow type crankshaft for converting a reciprocating motion into a rotary motion, which includes: a crank pin connected with a large end of a connecting rod for converting power of a piston into a rotary motion; a crank journal supported inside a crank case for enduring a load of the crankshaft; and a crank arm for connecting the crank journal and the crank pin with each other, wherein a hollow member is interposed in the crank pin to form a hollow part inside the crank pin, the hollow member being coated on the outer peripheral surface thereof with a paste type flux consisting of 8 to 13 % by weight of boric acid, 21 to 26 % by weight of borax, 34 to 44.5 % by weight of calcium fluoride, 26 to 32 % by weight of hydrofluoric acid, and 0.5 to 1.5 % by weight of impurity, whereby molten metal is injected between the hollow member and the crank pin in a state where the hollow member is interposed in the crank pin to thereby cast-bond the hollow member and the crank pin.
