35results about How to "Improve appearance pass rate" patented technology

The invention discloses a crystalline silicon solar battery positive electrode screen printing plate and belongs to the technical field of a solar battery. The crystalline silicon solar battery positive electrode screen printing plate comprises a screen frame and a plurality of mesh yarns arranged on the screen frame, wherein the mesh yarns are coated with a latex film layer, the latex film layer is provided with a positive electrode pattern, and the positive electrode pattern comprises a plurality of crossed primary grid wires and secondary grid wires; the mesh yarns comprise a plurality of vertical mesh yarns and transversal mesh yarns which are vertically crossed, the vertical mesh yarns are successively arranged on the screen frame in parallel at equal intervals, the transversal mesh yarns are successively arranged on the screen frame in parallel at equal intervals, and the interval between adjacent two vertical mesh yarns and the interval between adjacent two transversal mesh yarns are the same; and the primary grid wires are arranged in parallel between adjacent two transversal mesh yarns, the secondary grid wires are arranged in parallel between adjacent two vertical mesh yarns, and the quantity of the primary grid wires is smaller than that of the secondary grid wires. The solar battery positive electrode screen printing plate, while improving the electrode conductivity, improves the photoelectric conversion efficiency of a battery, can reduce EL broken grid proportion of a secondary grid at the same time, and improves the appearance qualified rate of the battery.

The invention discloses a grinding and sorting all-in-one machine for wear-resistant ball production. The machine comprises a base, the top of the base is connected with a sorting chamber, the top ofthe sorting chamber is connected with a grinding cylinder, and the left side of the top of the grinding cylinder is connected with a feeding hopper, and a fan is embedded in the right side wall of thegrinding cylinder, a filter screen is arranged on the left side of the bottom of the grinding cylinder, and a material conveying pipe is connected to the right side of the bottom of the grinding cylinder, the top of the left side of the inner cavity of the sorting chamber is provided with a waste collecting cavity, and the top of the base is connected with a fixing plate and a collecting box, theleft side wall of the fixing plate is connected with a first spring, and the left end of the first spring is connected with a movable plate, a cam is arranged on the left side of the movable plate, and a sieve tray is embedded in the movable plate. The machine is reasonable in structural design and is beneficial to improving the appearance percent of pass of the wear-resistant ball, dust impurities generated during grinding can be timely guided into the waste collecting box through the filter screen, non-performing products that the volume of the product is too large is screened out, the product quality is improved, and the processing efficiency of the wear-resistant ball is improved through the integrated design of the device.

The invention discloses a cooler for cooling an on-site welded joint of a long steel rail and a using method for the cooler. The cooler is characterized by comprising a walking support, a cooling fan and a cooling wind path distributing device, wherein the cooling wind path distributing device is fixed on the walking support; the cooling fan is arranged on the top of the cooling wind path distributing device; the cooling wind path distributing device has a bottomless empty tank shape; the lower part of the tank body is inwardly folded; wind path partitioning boards and a wind path switch are arranged in the tank; the wind path partitioning boards partition the tank body into a plurality of vertical spaces; and the tops of the wind path partitioning boards are moveably connected with the wind path switch. The using method comprises the following steps of: pushing the cooling wind path distributing device which is connected with an external power supply along the steel rail to a position above the on-site welded joint; turning on a switch of the cooling fan; distributing wind generated by the cooling fan to a part required to be cooled according to a certain sequence and a certain wind amount; and making the center of the cooling wind path distributing device uniformly swing within a range of 10cm around the welded joint so as to fulfill the aim of uniform cooling. The appearance of the welded joint is corrected by using a rule of thermal deformation in the cooling process, so that the appearance qualification rate of the welded joint is improved, the appearance polishing workload is reduced, and the product quality is improved.

The invention discloses radiator core surface treatment equipment. The equipment comprises a rack, a first conveying mechanism, a second conveying mechanism, a polishing machine, a sliding plate mechanism and an overturning device, wherein the first conveying mechanism and the second conveying mechanism are arranged at the upper end and the lower end of the rack respectively, the polishing machine is arranged at the upper end of the rack and located on one side of the first conveying mechanism, the sliding plate mechanism comprises an upper sliding plate and a lower sliding plate, the upper sliding plate is installed at the right end of the first conveying mechanism, the lower sliding plate is installed at the right end of the second conveying mechanism, the overturning device is installed at the right end of the first conveying mechanism and located between the upper sliding plate and the lower sliding plate, and an overturning mechanism can drive a radiating core to turn over. The equipment can improve the working efficiency, and can reduce the surface contact between the personnel and the radiating core, and therefore the yield is higher.

The invention discloses a paracetamol tablet. The paracetamol tablet is composed of paracetamol, a filler, a binder, a disintegrating agent, a lubricant and a stabilizer, wherein when an appropriate amount of stabilizer is added into the binder, the stability of the dissolution rate can be significantly improved. The invention also discloses a preparation method of the paracetamol tablet. The method uses a micronization technology to process the raw and auxiliary materials, so that the fusion of the raw and auxiliary materials can be improved, the tabletting time can be shortened, and the production costs can be saved. The finally prepared paracetamol tablet has a bright and clean appearance, a high dissolution rate, good stability and easy storage, and is suitable for large-scale industrial production.

The invention discloses a PCB outline machining method and device and a readable storage medium. The method comprises the following steps of S1, detecting whether an arc or a corner exists on the outline of a PCB or not, when the arc exists on the outline of the PCB, executing a step S2, and when the corner exists on the outline of the PCB, executing a step S3; S2, making a milling tape file according to the outline of the PCB, and breaking the arc in the milling tape file; and S3, making a drilling file, and adding a drilling hole at the corner of the outline of the PCB. According to the method, by detecting whether the arc and the corner exist on the outline or not, the arc is automatically broken, the drilling hole is automatically added at the corner, manual intervention can be directly reduced, the error probability is reduced, the working efficiency is improved, the operation time of workers is shortened, the labor cost is greatly saved, and the percent of pass of the outlines isimproved.

The invention provides a screen printing method and a resistor, which relate to the field of patch resistors. A screen printing method comprises the steps of placing a substrate under a screen printing plate, wherein the screen printing plate is made of a mask plate having a plurality of dumbbell-shaped patterns, introducing a slurry into the screen printing plate, scraping the slurry so that theslurry passes through the screen printing plate and is squeezed to the substrate. By using the screen printing method, the resistor with good consistency of resistance value and high qualified rate ofproduct appearance can be obtained.

The invention discloses a ferrite bead and a preparation method thereof. The method for preparing the ferrite bead comprises the following steps: S1, preparing a ferrite bead semi-finished product, wherein a magnet in the ferrite bead semi-finished product is formed by sintering a ferrite material, and a silver electrode is arranged on the magnet; S2, performing high-temperature treatment on the ferrite bead semi-finished product in a furnace with the oxygen volume fraction being 60-95% at the temperature of 400-600 DEG C for 2-10 hours, and performing furnace cooling after treatment is ended; and S3, performing electroplating treatment on the ferrite bead semi-finished product treated in S2, and depositing a metal coating on the electrode of the ferrite bead semi-finished product, thereby obtaining the ferrite bead. According to the preparation method disclosed by the invention, the appearance yield of the prepared product can be improved, and the manufacturing cost is low.

The invention discloses an endoscopic cavity component appearance detection method based on a line-scan digital camera. According to the method, a fixing bracket and a line-scan digital camera are mounted; the fixing bracket is of a U-shaped structure; a camera fixing column is mounted on the left side inside the fixing bracket; the camera fixing column is arranged perpendicular to the inner wallof the fixing bracket; one end of the camera fixing column extends into the inner cavity of a component to be detected; the component to be detected is of a hollow structure; the line-scan digital camera is fixedly mounted at one end of the camera fixing column; the right end of the component to be detected is fixed inside a clamping ring; a rotating shaft is fixedly connected with the middle of the outer side of the clamping ring; the rotating shaft is connected with a rotating motor which is arranged on a motor fixing rack; the motor fixing rack is mounted on the right side inside the fixingbracket; a monitoring terminal is mounted on the outer wall of the fixing bracket. The endoscopic cavity component appearance detection method is simple in structure principle and convenient to use,high-efficiency and high-precision detection on the appearance of the inner wall of an endoscopic cavity component can be achieved, the working efficiency is improved, and meanwhile, the component appearance pass percent can be increased.

The invention discloses a high-hardness easy-to-produce nitrile rubber formula, and relates to the technical field of rubber production research. The formula of the NBR comprises the following raw materials: 33.0 parts of NBR + PVC rubber and plastic alloy; 36.0 parts of carbon black; 1.7 parts of a softening agent; 3.0 parts of an active agent; 2.9 parts of an anti-aging agent; 1.2 parts of a vulcanization accelerator; 3.0 parts of phenolic resin; and 0.6 part of modified hexamethylenetetramine. According to the high-hardness easy-to-produce NBR formula disclosed by the invention, when the high-hardness easy-to-produce NBR formula is used for producing rubber, the addition amount of carbon black is properly reduced, the fluidity requirement of a rubber material is reasonably adjusted, phenolic resin and modified hexamethylenetetramine are added, and the material and rubber macromolecules are chemically crosslinked during high-temperature vulcanization, so that the crosslinking density is increased, and the hardness reaches 90 degrees or above; and after the product is heated, the hardness reduction rate is greatly reduced.

The invention discloses a preparation method of large-size metal-skin refractory bricks and a mold of the large-size metal-skin refractory bricks, and belongs to the technical field of refractory materials. The mold comprises a mold sleeve, mold base plates, a mold bottom plate, a mold false bottom, a mold bottom supporting plate, mold movable side plates, mold side plates, mold end plates and a mold cover plate. According to the method, the refractory bricks are designed to be stressed up and down, so that the pressing stress uniformity is improved, sufficient pressure is guaranteed, and cracking is avoided; the metal skin wrapping firmness is improved by designing a metal skin special-shaped claw; metal skin is protected through a special mold; the mold movable side plates and the metal skin achieve synchronous movement, so that metal skin deformation or friction scratches are avoided; and meanwhile, a grinding tool is protected, and the service life of the grinding tool is prolonged, so that the preparation qualification rate and production efficiency are improved.