127results about "Ceramic extrusion dies" patented technology

The current invention relates to a cutting device (2) and related method for cutting an extruded strand (3) into parts (44) for forming bricks or slips (4). The strand (3) is cut in a direction (H) transverse to its longitudinal direction (L), whereby first (5) and second (6) cutting faces of the parts (44) are formed, in addition to the extruded faces (7-10). The cutting device (2) comprises a transverse cutting knife (11) with a blade (12), comprising a first partial blade (13) and a second partial blade (16) at an angle (α) to the first partial blade (13), for correspondingly providing a first said cutting face (5) with a first partial cutting face (15), at a first edge (15a) adjacent to a first said extruded face (7), and a second partial cutting face (18), at said angle (α) to the first partial cutting face (15) at a second edge (15b) of the first partial cutting face (15) away from the first edge (15a).

To provide a production method for a mold suppressing generation of crack or melting defect generated in a honeycomb filter through heat impact by partial exothermic heat and acute temperature change in exhaust gas without increasing pressure loss and for a honeycomb molding.SOLUTION: A mold to form a honeycomb molding for a honeycomb segment with an outer peripheral wall thicker than a partition wall through extrusion is provided with a mold body and a guide ring attached on an outer peripheral side of the mold body. The mold body comprises: a first surface where a cray supply hole opens; a second surface placed opposite to the first surface, where grate slits in communication with the cray supply hole opens; and a third surface positioned at an opposite side of the first surface and at an outer periphery of the second surface, the second surface constitutes an area forming a grid-like partition wall in a honeycomb body, the third surface constitutes an outer peripheral area forming the outer peripheral wall, the second surface is higher than the third surface by a step part H, and the guide ring has a gap between the third surface and itself and an opening with an enough size to cover the outer peripheral side part of the outer peripheral area.SELECTED DRAWING: Figure 7(b)

The application relates to a pit mud preparation system, which comprises a feeding device through which pit mud is fed, a first cutting device which cuts the pit mud, a first conveying device, a second cutting device which cuts the pit mud again, a second conveying device, a first stirring device which stirs the pit mud after adding water, a granulating device which prepares the pit mud into strips, a third conveying device, a second stirring device which stirs the pit mud again after adding water, and a forming box. The application can improve the uniformity of the pit mud when the pit mud is cut through the first cutting device and the second cutting device. The pit mud is stirred twice through the first stirring device and the second stirring device, and the pit mud is granulated again through the granulating device between the two times of water stirring, so that the soaking effect of the pit mud is improved, the phenomenon that the pit mud is dry and wet after water stirring is avoided, the stirring effect of the pit mud is guaranteed, and the quality of the prepared pit mud is guaranteed.

The present invention relates to a device for producing a porous tubular support from a ceramic composition by extrusion, comprising: a fixed extrusion die (6) fitted with a punch holder (7) provided with a centrally located straight punch (8a) and at least one helical punch (8) wound around an axis of symmetry (X) along a winding direction and winding pitch; a system (10) for rotationally driving the punch holder (7) about said axis of symmetry (X) along a direction of rotation opposite to the winding direction of the punch (8) and at a rotational speed coordinated with the linear extrusion speed of the ceramic composition.

A drainage plate (10) for an extruder assembly including a body (12) having an inner edge (14) and an outer edge (15). A seal portion (24) of the body extends radially from the inner perimeter toward the outer perimeter. One of more drainage features are located radially outward of the seal portion. The one or more drainage features extend an axial depth into the body such that a first thickness (t1) of the drainage plate at the seal portion is greater than a second thickness (t2) of the drainage plate at the one or more drainage features. Methods of manufacturing a drainage plate and manufacturing ceramic articles are also disclosed.

The utility model relates to the technical field of punch forming, in particular to a silicon carbide ceramic special-shaped part near-net forming device which comprises a seat body, conveying structures are arranged at the left end and the right end of one side of the seat body, a raw material storage structure capable of transversely moving is connected between the two conveying structures, and a forming lower die is arranged below the other side of the seat body. And a supporting frame is fixedly installed over the forming lower mold and fixedly installed at the top of the base body, a driving air cylinder is installed at the top of the supporting frame, and the output end of the bottom of the driving air cylinder is fixedly connected with an upper mold base. And then the solid raw materials are conveyed to the position beside the forming device through the conveying structure, then the storage rack is lifted to a certain height through the lifting air cylinder, meanwhile, the electric push rod is used for driving the material pushing plate to push the solid raw materials to the slope end, and the solid raw materials are conveyed into a forming lower mold through the slope.

The invention relates to the technical field of brick making equipment, and discloses all-solid waste sintering brick making equipment which comprises a base, a brick making equipment body arranged at the top of the base, an extrusion pipe connected with the brick making equipment body and an extrusion mold connected with the extrusion pipe, and a spraying assembly is arranged at the position, close to the discharging end of the extrusion mold, of the top of the base. The spraying assembly comprises a box body, the box body is arranged at the top of the base, and a pipe body is arranged on the inner side wall of the box body; the water pipe I is arranged on the box body and is communicated with the pipe body; the spray head is arranged on the inner side wall of the pipe body and communicates with the pipe body, a humidifying assembly is arranged on the inner side wall of the box body, and the humidifying assembly comprises a first roller body and a second roller body, and the first roller body is rotationally connected to the box body; treatment is conducted through the spraying assembly, the sprayers arranged on the equipment in an annular array mode evenly spray water to the outer surfaces of the mud strips, the moisture content of the surfaces of the mud strips is effectively guaranteed, and therefore the sun crack phenomenon in the follow-up link is obviously reduced.

This invention belongs to the field of crucible preparation technology, specifically relating to a method for preparing an alumina crucible, comprising the following steps: Step 1: preparing a mixed solution and placing it in a ball mill; Step 2: obtaining a composite alumina slurry in the ball mill; Step 3: preparing composite alumina powder from the composite alumina slurry; Step 4: adding a binder to the composite alumina powder to obtain an alumina mixture; Step 5: molding the alumina mixture using a mold to obtain a crucible blank, wherein the mold forming process is a double-sided suction process. Compared with the prior art, the advantages and positive effects of this invention are: the double-sided suction process adsorbs fine particles in the material onto the product surface, while coarse particles are located in the middle layer of the product, thereby greatly improving the surface roughness of the finished alumina crucible, making the size of the alumina crucible more controllable, eliminating the need for a wax removal process, and effectively reducing the risk of the surface of the finished alumina crucible peeling off during use.

A method of forming an extrusion, the method including steps of: receiving a flow of extrudable material; extruding a plurality of flow streams from the flow of extrudable material; inducing a change in volumetric flow rate of at least one of the flow streams relative to another one of the flow streams; and combining each of the flow streams to form an extrudate having a velocity gradient.

Systems, methods and devices to create a wall system having a cross sectional density gradient obtained by structural 3D printing are disclosed. A mechanism is described that accepts a cementitious material and combines it with a gaseous bubble mixture and then partially mixes the various materials in such a controlled manner as to create a density gradient. The gaseous mixture may be primarily composed of carbon dioxide.

The utility model is applicable to the field of ceramics, and provides a shaping device for zirconia ceramic rod processing, which comprises a pressure box, a pressure channel is arranged in the pressure box, a feeding funnel is arranged at the top end of the pressure box, the bottom of the feeding funnel extends into the pressure channel, a hydraulic machine is arranged at the left end of the pressure box, and the hydraulic machine is arranged in the pressure channel. A telescopic rod of the hydraulic machine extends into the pressure channel, and a plunger plate is arranged at the end of the telescopic rod. When the extrusion die is used, a hydraulic machine drives the plunger plate to push forwards to push materials into the extrusion die pipe for shaping, at the moment, the charging tile is inserted into the material pipe in a penetrating mode, the charging tile is attached to the lower portion of the outer side wall of the extrusion die pipe, and the extrusion speed of a blank at a port of the extrusion die pipe is the same as the retreating speed of the charging tile. After a cylindrical blank is loaded on the loading tile, a worker cuts off the blank through a cutter, and at the moment, a steering motor drives the loading tile to twist by 180 degrees and then puts the blank into a material pipe.

The application provides a porous sintered brick extruder, relates to the field of brick making equipment, and comprises a feeding hopper, an extrusion cylinder, an extrusion screw, a screw driving part, an extrusion die and a heating unit. The extrusion cylinder is formed with an extrusion cavity. The feeding hopper is communicated with the extrusion cavity. The extrusion screw is arranged in the extrusion cavity. One end of the extrusion screw extends from one end of the extrusion cylinder and is connected with the screw driving part. The extrusion die is connected with the other end of the extrusion cylinder. The other end of the extrusion screw is rotatably connected to the end of the extrusion cylinder close to the extrusion die. The heating unit is arranged outside the extrusion die. The application has the effect of conveniently controlling the water content of the extruded green bricks, so that the extruded green bricks are not prone to deformation.

A device (100) for dispensing a hydraulically hardening building material (2), such as concrete, mortar, binder, and the like, wherein at least one further medium (3), for example, steel, is introduced into the building material, comprising a nozzle (1) for supplying the liquid, pasty, or plastic building material (2), wherein at least one pipe (11) projects into the nozzle (1) for supplying at least one further medium (3). According to the invention, the position of the opening of at least one pipe (11) within the cross-section of the nozzle (1) is adjustable. This makes it possible, for example, to introduce cable-shaped reinforcement materials into the areas of the building material (2) or component that are subject to higher mechanical stress. Furthermore, the use of the device in 3D printing is presented.

An apparatus for making and depositing bricks includes a nozzle having an inlet opening, an outlet opening, and a plurality of walls surrounding the outlet opening. At least one of the walls is configured to retract relative to the other walls. When a first brick is deposited, all of the nozzle walls are in the extended position. When subsequent bricks are deposited, one or more of the nozzle walls are retracted so that the form for the subsequent bricks is provided by the walls that are in the extended position and the sides of the already-deposited bricks. In this manner, the nozzle is configured to deposit the bricks directly adjacent to each other without any space or intervening material between them. The bricks may be deposited in a heated state and they meld together as they cool. The nozzle is particularly advantageous for paving autonomously in otherwise inaccessible locations, such as surfaces on the moon or other planets.

Provided is a honeycomb structure which has CO2 adsorption performance, is easy to mold, generates less CO2 during production, is unlikely to crack during drying, and has improved water resistance. The honeycomb structure has a plurality of cell channels that pass through the inside of the honeycomb structure and are defined by partition walls containing a solid organic compound having an amino group, an organic binder, and an inorganic binder.

To provide a honeycomb structure capable of reducing the risk of cracking in the honeycomb structure when heated and a method for producing the same.SOLUTION: There is provided a honeycomb structure 1 which has a honeycomb structure part 2 having an outer peripheral wall 20 and a partition wall 21 which is arranged inside the outer peripheral wall 20 and dividedly forms a plurality of cells 21a forming a flow channel extending from one end face to the other end face and further has a plurality of slits 3 extending radially inwardly from an outer peripheral surface of the honeycomb structure 1 and extending in the extension direction of the cells 21a and a filler 4 filled in the plurality of slits 3, wherein when the difference between a width Y of the filler 4 and a width X of the slit 3 represented by the following expression (1) is determined for each slit 3, the difference between a maximum value A of the difference and a minimum value B of the difference represented by the following expression (2) is 0.4 mm or less. In the expression (1), X represents the width of the slit 3 on the outer peripheral surface of the honeycomb structure 1 and Y represents the width of filler 4 when looking at the filler 4 from the outside in the radial direction. Expression (1) Y-X. Expression (2) A-B.SELECTED DRAWING: Figure 1

The utility model discloses a device for improving the ceramic coating yield of zirconium oxide all-ceramic, and relates to the technical field of zirconium oxide all-ceramic production. The mould comprises an upper mould, a lower mould and a fixing plate, the upper side of the inner wall of the upper mould is fixedly connected with a fixing block, a dental crown is clamped on the surface of the fixing block, porcelain powder gaps are arranged between the dental crown and the upper mould as well as between the dental crown and the lower mould, and the lower side of the inner wall of the lower mould is fixedly connected with a plurality of tooth socket imitating blocks. Extrusion openings are formed in the positions, located on the left side and the right side of the fixing block, of the top face of the upper die, and an extrusion mechanism is arranged on the fixing plate. The device is simple in structure and convenient to operate, and manual operation experience is not easy to eat, so that the finished product rate can be improved.

The invention discloses an automatic pressure relief refractory brick forming die and relates to the technical field of refractory brick forming. The automatic pressure relief refractory brick forming die comprises a workbench, a portal frame is fixedly connected to the upper end face of the workbench, sliding grooves are symmetrically formed in the upper end face of the workbench, and an air cylinder is fixedly connected to the upper end face of the portal frame; a lower mold is arranged under the upper mold, the lower mold is fixedly connected to the upper end face of the workbench, the mold air pretreatment mechanism comprises symmetrically-arranged air exhaust boxes, the air exhaust boxes are fixedly connected to the lower mold, and air exhaust holes are fixedly connected to the positions, close to the interior of the lower mold, of the air exhaust boxes at equal intervals; before a material in the lower mold is pressed and formed, air in the lower mold can be pre-extracted in advance, air in a mold cavity can be exhausted, residual gas is greatly compressed, and the defects of spallation, internal air holes and surface scorching caused by gas compression and temperature rise under high pressure are fundamentally avoided.

The invention relates to a system for extruding beads of construction material for a robot (60) for additive manufacturing of architectural structures (70), the system comprising: a printhead (30) for printing beads of construction material, comprising an intake opening (31), an extrusion nozzle (34) and a mixing chamber (35) arranged between the intake opening (31) and the extrusion nozzle (34); a supply circuit (20) for supplying construction material; a device (40) for accelerating setting, which device opens into the mixing chamber (35); and a device (50) for retarding curing comprising a reservoir (52) of retarding additive, a duct (54) fluidically connecting the reservoir and the mixing chamber (35), and a positive displacement pump (56) arranged on the duct (54) and controlled so as to be able to meter the amount of retarder injected into the mixing chamber (35).

A printing system for automatically producing a building part via 3D printing on a print bed, includes: a first discharge device for forming a strand of construction material at a first discharge portion of the first discharge device, wherein the first discharge device can be moved relative to the print bed in order to automatically arrange the construction material on the print bed in at least one construction material layer of the building part; and at least one second discharge device for discharging at least one functional material, different from the construction material, at a second discharge portion of the second discharge device, wherein the second discharge device can be moved relative to the print bed in order to automatically coat the at least one construction material layer, at least in portions, with the functional material in order to form at least one functional material layer of the building part. The first discharge portion and the second discharge portion are formed separately.

The application provides a block machine mold automatic replacement control method based on state feedback, and relates to the technical field of mold control, which comprises the following steps: based on a plurality of pressure relief stages divided according to the adaptive target pressure drop trajectory, hierarchical pressure relief and reverse vibration control are cooperatively executed to generate a mold separable confirmation signal; the connection state of the mold connection part is judged, and a targeted cooperative loosening scheme is generated to remove the old mold and replace the to-be-replaced mold; by constructing a full-chain feedback mechanism covering the service state of the mold, the locking interface mechanical properties and the dynamic response of the actuator, the deficiencies of the existing automatic mold replacement technology in safety, adaptability and reliability are systematically solved.

The invention discloses a forming device for perforated brick processing and a working method, and belongs to a conveying mechanism, a press-fit forming mechanism is arranged on the conveying mechanism, a feeding mechanism is arranged on the press-fit forming mechanism, the conveying mechanism comprises a lower die capable of ascending and descending, and the press-fit forming mechanism comprises an upper die capable of ascending and descending. The feeding mechanism comprises a screening mechanism arranged on the conveying mechanism in a sliding mode, the screening mechanism comprises a powder box, a screen and a scraping strip are arranged at the bottom of the powder box, the feeding mechanism further comprises a material receiving mechanism rotationally arranged below the screening mechanism, the material receiving mechanism comprises a material receiving box and an upper mold, and the material receiving mechanism is rotationally provided with a compensation plate. The rotatable material receiving mechanism is arranged below the screening mechanism, in the initial state, the material receiving mechanism is in the horizontal state, at the moment, the material receiving mechanism can block a bottom screen of the screening mechanism, and scattered powder can be collected in a centralized mode.

The invention discloses a production device of a new pavement material water permeable brick for a bridge, and relates to the field of water permeable brick production and processing.The production device comprises a plate passing mechanism, a brick forming mechanism, a finished product conveyor and a compaction degree checking mechanism which are sequentially connected in the direction of a brick making procedure, and the plate passing mechanism is used for providing a bottom template for compacting and forming bricks; the plate transferring mechanism comprises a plate loading frame, bottom templates which are arranged on the inner side of the plate loading frame and are stacked, and pneumatic plate pushing equipment which is arranged on the lower side of the plate loading frame and is used for pushing out the bottom template on the bottommost side; the brick forming mechanism is configured to be an integrated work station integrating gradient material distribution, vibration compaction and demolding. The finished product conveyor is used for conveying the bottom template and the formed bricks; the compactness checking mechanism is used for checking the quality of the finished bricks; the water permeable brick production device integrates the functions of plate passing, brick forming, vibration negative pressure, finished product conveying, compactness detection and the like, and can achieve whole-process continuous production from bottom template supply to finished product quality detection.

The invention provides a colored inorganic artificial stone and a preparation method and a color matching method thereof.The preparation method comprises the following steps that S1, graded aggregate and inorganic toner are put into a stirring machine to be subjected to dry mixing and stirring, then water, a water reducing agent, white cement, metakaolin and emulsion are put into the stirring machine to be stirred, and a mixture is obtained; wherein the graded aggregate comprises calcium sand of 5 meshes, calcium sand of 20 meshes, calcium sand of 40 meshes, calcium sand of 60 meshes, calcium sand of 80 meshes, calcium sand of 100 meshes and calcium powder of 325 meshes; s2, the mixture is placed in a mold to be subjected to compression molding, and a rough board is obtained; and S3, the rough board is subjected to maintenance and grinding and polishing in sequence, and the colored inorganic artificial stone is obtained. The preparation process is simple, the high-quality colored inorganic artificial stone which is saturated and uniform in color and fine and smooth in texture can be prepared, and toner pre-dispersion equipment does not need to be depended on.

The application discloses a kind of ceramic automatic forming machines, it is related to ceramic product processing technical field, including operation platform, the upper surface of the operation platform is rotatably connected with plaster mould, the inner cavity of the plaster mould is equipped with upper mould core, further including two-axis gantry for controlling the movement of upper mould core and installed on the upper surface of operation platform, the slide ram is slidably connected on the two-axis gantry, the surface of the slide ram is equipped with the fixed frame for interfacing upper mould core, the inner cavity of the fixed frame is equipped with double-layer disc, the double-layer disc can drive upper mould core gradually migrates from the edge area to the central area of plaster mould in the process of ceramic embryo forming, the posture of upper mould core is switched to different posture in different stage by double-layer disc and telescopic rotating lever, seamless connection of rolling material and edge closing compaction is realized, ensure that the embryo made is uniformly thick from top to bottom, cooperate with conical disc persistently to the side wall feeding, form the mode of two-section feeding, improve the ability of embryo material to extend upwards.

The invention discloses high-strength ceramic part machining forming equipment and a method thereof, belongs to the technical field of ceramic part machining, and provides the following scheme that the high-strength ceramic part machining forming equipment comprises a ceramic part machining mechanism, a step pressing mechanism is arranged on the ceramic part machining mechanism, the ceramic part machining mechanism comprises a recycling assembly, and a feeding assembly is arranged in the recycling assembly; automatic circulation of the mold is achieved through the feeding assembly, feeding, discharging and pressing operation can be continuously completed through alternate circulation, in the circulation process, due to the gradually-decreasing design of the adjusting gradient of the annular guide rail, step-by-step adjustment of the mold cavity adjusting assembly can be controlled, ceramic powder can be laid and scattered in a layered mode according to the bottom layer, the middle layer and the top layer, powder accumulation gaps are effectively reduced, and the production efficiency is improved. And after the ceramic powder reaches the detection area, the ceramic powder continues to descend, space is effectively reserved, the situation that the pressing effect is affected by the overflowing state is avoided, when the mold cavity adjusting assembly walks to the initial gradient, the pressed and formed ceramic part can be automatically ejected out, and the purpose of convenient material taking is achieved.

The utility model discloses a silicon carbide ceramic part forming die, which belongs to the technical field of forming dies and comprises an upper die holder and a lower die holder, a mounting cavity is formed inside the upper die holder, a female die is arranged on the lower die holder, and a water injection component for sprinkling water into the female die is arranged inside the lower die holder. The water injection assembly comprises a water storage cavity formed in the female die, a flow pump, a water outlet pipe and a water inlet pipe, wherein the water outlet pipe and the water inlet pipe are connected to a water outlet and a water inlet of the flow pump, and the water outlet pipe is communicated with the water storage cavity. A vibration assembly is mounted in the mounting cavity; the water injection assembly is arranged, the water inlet pipe is connected with an external water source, flow is pumped into the water outlet pipe through the flow pump and enters the water storage cavity, and when the water level reaches the water outlet groove, the water can be discharged from the water outlet groove, enters the female die, flows downwards from the top of the female die and infiltrates the female die, so that a ceramic part is conveniently demolded, and clean water does not need to be manually sprayed; the use is more time-saving and labor-saving.