49results about How to "Improve printing yield" patented technology

The invention discloses a large and medium chinaware manufacturing method. Compared with a traditional method, such subsequent treatment processes as outer surface finishing, finish carving treatmentand/or colored drawing treatment and glazing of large and medium chinaware ceramic blanks and production of chinaware outer profile surfaces belong to simultaneous asynchronous treatment spaced by specific space-time intervals, so that the problem of performing subsequent processes one by one after completion of previous treatment procedures in the traditional method is overcome, and saving of a lot of time and delication of the artistic effect can be both considered. In addition, the method can finish complex shapes, is more suitable for manufacturing of large and medium artistic shape chinaware, meanwhile, greatly enriches the shaping range of large and medium chinaware, and greatly reduces the manufacturing cost of large artistic porcelains.

The invention discloses a three-dimensional printing method based on fluid support. The printing method comprises the following steps that (1) a supporting fluid material is prepared, and then is putinto a container; (2) a three-dimensional model to be printed is sliced, and then a printer is used for printing a structure in the supporting fluid material in the step (1); (3) the structure which is printed in the step (2) is enabled to undergo post-curing in the supporting fluid material; and (4) after curing is completed, the printed structure is taken out by using a colander. According to the printing method, a supporting structure does not need to be designed and machined additionally, therefore, the structure range suitable for printing processing can be expanded, the printing yield isincreased, the post-processing process is simplified, and the printing cost is reduced.

The invention relates to an intelligent 3D printing substrate leveling system. The intelligent 3D printing substrate leveling system comprises a bearing substrate, a forming substrate fixed to the bearing substrate, four distance sensing devices located in the same horizontal plane, a numerical control unit storing a preset distance and a drive device. The plane is defined as a datum plane. The four distance sensing devices and the bearing substrate are located on the two back-to-back sides of the forming substrate correspondingly. The four distance sensing devices are aligned with the four corners of the forming substrate at intervals correspondingly and used for sensing the distance between the four corners of the forming substrate and the datum plane so as to output four distance signals. The numerical control unit receives four distance signals and calculates four distance deviations between the four distance signals and the preset distance. The drive device is movably connected with the bearing substrate, and at least three movable connecting positions are defined. The drive device drives the bearing substrate to ascend, descend or rotate relative to the movable connecting positions according to the four distance deviations so that the four distance deviations can be in the preset deviation range. The invention further provides a 3D printer.

The invention discloses a tension method of a printing polyester screen. By adopting the technical scheme, the tension method has the advantage that warp yarns, weft yarns and a screen framework of the screen are calibrated by films, so that the edges of the screen framework maintain the standard preset angle with the warp yarns or weft yarns of the screen, then the screen adhering and glue setting are performed, the difference between wave peak and wave valley of sawtooth after screen exposing is obviously reduced, the problem of sawtooth in screen and printing is greatly relieved, and the qualified rate in printing is improved.

Disclosed is a low-temperature conductive printed circuit board silver slurry. The slurry is prepared by use of the following raw materials in parts by weight: 6-9 parts of indium tin oxide, 4-6 parts of 1-10 nm sheet-like silver powder, 4-6 parts of 40-50 nm spherical silver powder, 50-60 parts of 1-10 [mu]m sheet-like silver powder, 5-7 parts of an E-12 epoxy resin, 1-2 parts of a silicone resin, 12-15 parts of xylene, 7-10 parts of n-butanol, 1-2 parts of a polyurethane resin, 0.4-0.8 parts of isophorone diamine, 1-2 parts of dipentene, 2-4 parts of lignine, 0.4-0.8 parts of ethylene bis oleamide, and 11-14 parts of glass powder. According to the invention, the indium tin oxide is added to the slurry, less silver powder is consumed, the conductivity is good under the condition of a low temperature, and excellent conducting effect is achieved through matching of the silver powder in different particle sizes and different shapes; and the glass powder is low in melting point and small in heat expansion ratio, such that the circuit printing yield is high, and the conducting performance is good.

The invention relates to a silicon wafer surface cleaning device of a solar cell printer. The silicon wafer surface cleaning device of the solar cell printer comprises a bracket, a blowing pipe and an air source; a pipe opening at one end of the blowing pipe is sealed; an pipe opening at the other end of the blowing pipe is open; the opened pipe opening of the blowing pipe is communicated with the air source through a pipeline; a plurality of blowing holes are arranged on the pipe wall of the blowing pipe; the air source is arranged on the solar cell printer; the brackets are arranged at the two sides of a conveyer belt of the solar cell printer, and the blowing pipe is arranged on the bracket. The silicon wafer surface cleaning device of the solar cell printer carries out cleaning work right opposite to a silicon wafer by adding the blowing pipe on the conveyer belt of the solar cell printer, blowing air through the air source and ventilating through the blowing holes, and can blow away silicon nitride particles and the like on the silicon wafer surface, so that the printing yield is improved, and collection of current on the silicon surface is increased, thereby improving the photoelectric conversion efficiency.

The invention provides rotary screen printing white ink and a preparation method thereof. The rotary screen printing white ink comprises the components in parts by mass: 15-30 parts of a polyurethane acrylate oligomer, 3-10 parts of an ultraviolet initiator, 40-55 parts of titanium dioxide, 5-10 parts of dipentaerythritol hexaacrylate, 10-20 parts of hexanediol diacrylate, 0.5-1 part of a dispersing agent, 0.5-2 parts of a leveling agent, 0.2-2 parts of an antifoaming agent and 0.1-0.5 part of a polymerization inhibitor, wherein the polyurethane acrylate oligomer comprises a bifunctional polyurethane acrylate oligomer and a hexafunctional polyurethane acrylate oligomer; and the defoaming agent is selected from one or more of a polyether defoaming agent, an amine defoaming agent and an amide defoaming agent. The rotary screen printing white ink shows a satisfactory printing effect when performing field printing and character printing at the same time, and has excellent and balanced drying speed and adhesion at the same time.

The invention discloses an additive manufacturing thin-wall rotating member anti-deformation device and an application method thereof. According to the characteristics that the cross-sectional size ofan additive manufacturing thin-wall rotating member changes continuously along with the change of height and the size of the thin-wall rotating member is larger, the size of a support frame further changes continuously, that is, a fixed screw rod is used as a vertical support frame in the vertical direction, and the outer diameters of transverse support rings change continuously along with the change of the size of the rotating member; and the outer diameter of the support ring at the vertical center position is the largest, and the outer diameters of the support rings are gradually reduced upward or downward, and the outer walls of the support rings are always in contact with the inner wall of the rotating member to play a supporting role. According to the additive manufacturing thin-wall rotating member anti-deformation device, the size of the device can be stably controlled within a range of manufacturing blanks, so that the printing yield is improved; and the device is an assemblypart, and can be disassembled integrally or in parts, so that cyclic utilization is convenient.

The invention belongs to the chemical industry and in particular relates to a method for coating water-transferring printing backing paper. The method is characterized in that: the water-transferring printing backing paper is coated at one time by adopting a mixture prepared from the following components in the weight ratio of rubber powder to hydroxypropyl methylcellulose to polyacrylamide to water of 100:(1-5):(0.5-1):(250-350). The method comprises the following specific steps of: dissolving and stirring the rubber powder and the water in the ratio at the temperature of 85 to 95 DEG C at first; reducing the temperature to 45 to 55 DEG C, adding the proportionally prepared hydroxypropyl methylcellulose and stirring; after stirring, transferring the stirred glue into a reaction kettle of a high-speed stirrer, adding the proportionally prepared polyacrylamide and stirring. In the method, by adoption of one-time coating, the cost is lower and the yield rate is higher.

The invention provides a guide plate, an ink-jet printing method and device, a display substrate and a manufacturing method and device for the display substrate. The guide plate comprises a platy body. The platy body comprises a first side and a second side backing onto the first side. A plurality of through grooves are formed in the platy body. Each through groove penetrates through the first side and the second side and comprises a first opening formed in the first side and a second opening formed in the second side, wherein the area of the first opening is greater than the area of the second opening. By adoption of the guide plate, the ink-jet printing precision can be ensured, and the printing yield is increased.

A printing machine and its paper feeding mechanism. The paper feeding mechanism includes a frame, a bellows part, a conveying part, an exhaust part and a detection part. The bellows part includes a plurality of bellows arranged side by side in succession and transversely to the paperboard conveying direction, each bellows is connected to the suction source through a switching mechanism, and a pair of bellows are arranged above the end of the paper feeding stroke. Photoelectric sensor, during the paper feeding process, the position of the cardboard is checked by the photoelectric sensor, so as to control the action of the cutting mechanism, so that the suction source only needs to exhaust the bellows under the cardboard, which is beneficial to reduce energy consumption, and can choose a higher Low-power suction source equipment, and when the cardboard is sent crookedly, it can stop the machine in time to reduce waste and improve the printing yield.

The invention provides an LED printing method. The LED printing method comprises the steps: preparing an LED substrate to be printed; placing a printing net above an LED substrate to be printed, wherein the printing net is a blocky flat plate, a plurality of via holes penetrating through the upper surface and the lower surface of the flat plate are formed in the flat plate, and the hole diameters of the via holes are gradually increased in the direction from the upper surface to the lower surface of the flat plate, and the arrangement position of the via hole corresponds to a bonding pad area on the LED substrate; coating a conductive connecting material along the upper surface of the printing net, injecting the conductive connecting material into the via holes, and coating the conductive connecting material on the corresponding bonding pad areas; taking down the printing net, and completing the coating of the conductive connecting material. Therefore, the through holes of the printing screen are set to be big-end-down, the problem that glue and solder paste are not demolded is solved to a great extent, the success rate of LED installation is improved, and the LED printing yield is further improved.

The invention discloses a reciprocating motion type sealed ink fountain on a printing or coating machine. The reciprocating motion type sealed ink fountain on the printing or coating machine solves the problems that an existing sealed ink fountain are fixed, a scraper and an anilox roller on the existing sealed ink fountain are also fixed, so that the scraper has a high change frequency, printingcost is increased, and scraper consumption is serious, and other problems are also solved. According to the technical scheme, the reciprocating motion type sealed ink fountain on the printing or coating machine comprises an ink fountain frame for being fixed on the printing or coating machine and a sealed ink fountain arranged on the ink fountain frame. The reciprocating motion type sealed ink fountain is characterized in that the sealed ink fountain is matched on the ink fountain frame in a transversely sliding mode and is positioned at the front side of the ink fountain frame; a reciprocating motion driving mechanism is mounted on the ink fountain frame; and the driving end of the reciprocating motion driving mechanism is connected with the sealed ink fountain.

The invention discloses a thermocuring printing method and device, and belongs to the technical field of 3D printing. The method comprises the steps that a driving mechanism drives a printing platform to move downwards by a corresponding layer height from the liquid level of a liquid tank in the liquid tank where a thermocuring fluid material is stored to stop; a scraper assembly scrapes the liquid level of the liquid tank after the printing platform moves in the liquid tank; a thermocuring unit cures the leveled liquid level of the liquid tank to form a model structure with the corresponding layer height; whether printing is finished or not is judged, and if yes, ending is carried out; and if not, the steps are repeated. The device part comprises the printing platform, the liquid tank, a refrigerator, the scraper assembly, the thermocuring unit and a driving unit. The device has the advantages of high printing fineness and high printing quality.

The invention discloses a high-yield SMT process for solder paste printing, relates to the technical field of SMT, and aims to solve the problems that existing solder paste printing mostly adopts silk-screen printing, the printing precision is low, and printing correction is inconvenient. The solder paste jet printing machine head comprises a first base, a second base and a feeding mechanism, the feeding mechanism is located at the upper end of the second base, the first base is connected with the second base in a welded mode, a material supplementing barrel is installed at the lower end of the first base, a printing spray rod is installed at the lower end of the material supplementing barrel, and the feeding mechanism comprises a material storage barrel and a constant-temperature heating sleeve. The constant-temperature heating sleeve is located on the outer side of the material storage barrel, the material storage barrel is connected with the constant-temperature heating sleeve in a glued mode, a material conveying pipe is installed between the material storage barrel and the material supplementing barrel, the material conveying pipe is fixed to the material storage barrel and the material supplementing barrel in a sealed mode, and negative-pressure dust suction rods are installed on the two sides of the lower end of the first base. A negative pressure dust suction nozzle is arranged at the lower end of the negative pressure dust suction rod, and dust collection boxes are installed on the two sides of the upper end of the first base.

The invention relates to the field of intelligent printing equipment. An intelligent printer comprises a rack assembly, and a tray loading and replacing device, a manipulator charging device, a twelvedial device, a pressing and positioning device, a printing device and a product discharging device arranged on the rack assembly. The intelligent printer has the advantages that the tray loading andreplacing device is convenient and precise to load, the manipulator loading device is precise in loading position, the pressing and positioning device positions a workpiece precisely, the twelve dialdevice is precise to act, the printing device is precise in polychrome printing, and the product discharging device is convenient to discharge; and the intelligent polychrome printer is full-automaticto operate, high in degree of intelligence and high in printing rate of finished products.