10results about How to "Process defect reduction" patented technology

The utility model discloses a novel duckbill valve which comprises a duckbill valve outer-layer shell and a base and is characterized in that a cavity is formed in the outer-layer shell, a liquid input port communicated with the cavity is formed in the lower end face of the base, the outer-layer shell is contracted inwards from bottom to top, and a liquid output channel communicated with the cavity is formed in the top of the outer-layer shell; the length of the liquid output channel is at least 2 mm, the width of the liquid output channel is at least 0.1 mm, a cavity formed in the outer-layer shell is composed of an upper-layer cavity body and a lower-layer cavity body, the upper-layer cavity body is in a cone shape with the conical tip included angle being 47.64 degrees in the section view and is connected with the liquid output channel, and the lower-layer cavity body is in a cylinder shape and is connected with the liquid input port. According to the novel duckbill valve, the size, the structure, the internal included angle and the radian of the outer surface of the duckbill valve shell are redesigned and arranged on the basis of an original product, the sealing performance of the novel duckbill valve is effectively improved, the liquid leakage rate is reduced, and meanwhile the production and machining difficulty of the novel duckbill valve is reduced.

The utility model relates to the technical field of injection molds, and discloses a large complex plastic product sectional type injection mold which comprises a base, a lower mold is fixedly connected to the middle of the upper end of the base, a water tank is arranged at the lower end in the lower mold, and a refrigerator is arranged on the end face of one side of the water tank. A heat absorbing plate is arranged on the outer side of the upper end in the lower die, and heat pipes are evenly arranged at the lower end in the heat absorbing plate at intervals. When the mold is used, the arranged servo motor drives the spiral blades at the four corners to rotate, plastic can be uniformly conveyed into the injection molding cavity, full filling is ensured, bubbles or cavities are avoided, the quality and appearance of products are improved, meanwhile, the filling speed in the injection molding process can be increased, and the production efficiency is improved. The production efficiency is improved, the period is shortened, the yield is increased, stress and deformation in the plastic filling process are reduced, process defects are reduced, and the product quality stability is improved.

The utility model discloses a welding clamp tool for a subminiature welding type filter, which comprises a bottom plate, a carrying plate, a positioning plate and at least one group of supporting plates, the bottom plate, the carrying plate and the positioning plate are arranged in parallel and are perpendicular to the supporting plates, and the supporting plates are clamped with the bottom plate, the carrying plate and the positioning plate and are fixed through screws; at least two rows of first through holes are formed in the bottom plate, a first square groove is formed between the two rows of first through holes, and second through holes, second square grooves, third through holes and third square grooves which are matched with the first through holes and the first square grooves are formed in the carrying plate and the positioning plate respectively. According to the utility model, workpieces can be accurately positioned and welded, workpiece leads are not damaged or skewed, partial parts in the filter are prevented from deviating in the mounting process, the process defects are obviously reduced, the welding speed is improved, a plurality of workpieces can be welded, and meanwhile, the device has the characteristics of compact structure, high applicability and high accuracy.

The invention relates to the technical field of semiconductor devices, in particular to an InGaAs focal plane detector based on DTW integration and a preparation method of the InGaAs focal plane detector, and the InGaAs focal plane detector comprises a silicon-based readout circuit wafer layer, an InGaAs detector array chip layer, N electrode metal and an optical filter film structure layer. The first indium bump array and the second indium bump array are bonded in a flip-chip manner and are filled and fixed by an organic polymer medium; the N electrode metal is respectively connected with the n-InP contact layer and the N electrode region; and the optical filter film structure layer is arranged on the back surface of the InGaAs detector array chip layer. According to the DTW integration technology based on the In salient point array, a traditional N hole structure and a preparation technology are removed, the N electrode is led out from the back face to the N electrode of the reading circuit after the substrate is removed, the technology steps can be simplified, the area of a detector array chip is reduced, a wafer-level machining platform is connected, and the condition for constructing a high-performance optical filtering structure is achieved.

The invention relates to an integral positioning device for an automobile intercooler, the intercooler comprises a core body, the core body comprises heat dissipation pipes and a main plate, the heat dissipation pipes are located on the two sides of a protruding area of the main plate, and the side, facing the core body, of the integral positioning device is provided with surface protrusions and positioning blocks on the periphery of the surface; the positioning blocks are matched with the protrusions at the tail ends of the main plates, the protruding areas of the main plates are matched with the surface protrusions, the heat dissipation pipes are located on the two sides of the surface protrusions, and positioning of the heat dissipation pipes and the main plates is achieved. Compared with the prior art, the radiating pipe is prevented from falling off easily; the mainboard and the radiating pipe are located on the optimal welding surface, the formability of a welding seam is good, and the repair welding rate is reduced; after the core body is assembled, the radiating pipe has consistent extension length, and the size deviation of a product is reduced; a brazed product is attractive and regular; and the qualification rate of airtightness detection of the core buckling air chamber is high.

This invention discloses an automated control method and system for the production of spandex spinning oil. The method uses a DCS (Distributed Control System) to detect and self-check the tank level, utilities, and pump / valve status. Upon successful self-check, production access is unlocked; otherwise, it is locked and an alarm is triggered. After unlocking, process parameters from the formula library are retrieved. Material is weighed via a variable frequency pump PID controller linked to a weighing sensor, and the feed flow rate is controlled by fuzzy PID, following the feeding sequence and timer intervals. The DCS issues a grinding command, collecting particle size data in real time; if the particle size does not meet the standard, the grinding time is extended until it does. Heating and stirring are initiated based on the mixing tank level signal, with timed temperature increases to the set value and then maintained. After the two processes are completed, the ground material is fed into the mixing tank for secondary stirring. Successful sampling triggers filling, with fuzzy PID controlling the filling flow rate. Once the liquid level is reached, the valve is closed, and a delayed cleaning process is initiated. After filling is complete, the entire line is shut down. This invention solves the problems of fixed PID control parameters and insufficient interlocking of all processes in traditional PID control methods.

The utility model discloses a pressing rivet positioning device for an electrical cabinet plug, which comprises a lower die holder for placing a plug assembly, a pressing rivet assembly is arranged above the lower die holder, the pressing rivet assembly comprises a pressing rivet block, a pressing rivet rod capable of vertically moving along the pressing rivet block is arranged in the pressing rivet block, and a pressing rivet head is arranged at the bottom of the pressing rivet rod. The plug assembly is fixed at a proper position and does not move or vibrate, so that the stability in the riveting process is kept; and moreover, accurate positioning of the plug assembly can be kept, the quality and precision of press riveting are ensured, process defects caused by human errors are reduced, and the production efficiency and the production quality are improved.

The invention provides an imprint mask for nanoimprint lithography and a preparation method thereof, the whole layout is divided into a plurality of local areas, the pattern duty ratio and pattern line width characteristics of the local areas are evaluated, and meanwhile, the characteristic size of an auxiliary pattern is corrected by an imprint process factor and an imprint material fluidity coefficient. Different from the underlying logic of a photoetching correction auxiliary pattern, the method considers the characteristics of the imprinting process, and corrects the duty ratio and layout of the whole layout by adding the auxiliary pattern based on the layout characteristics and the filling rule of the imprinting characteristics, thereby improving the filling uniformity of the imprinting resist and improving the uniformity of the imprinting bottom film.

The invention discloses a self-fastening forming die for a composite annular corrugated cylindrical shell and a preparation method of the self-fastening forming die. The invention aims to solve the problems that the circumferential corrugated cylindrical shell made of the composite material cannot be manufactured by using a winding process, however, in an existing mold pressing scheme, sheet-shaped wrinkles are easily extruded at a mold closing seam due to the large thickness of a prepreg before curing, and enough pressure is difficult to apply to the prepreg only through bolt fastening. An inner cylindrical mold, an outer cylindrical mold, an upper clamp, a lower clamp and a positioning disc are adopted, and the composite material circumferential corrugated cylindrical shell is prepared after hot-pressing curing. The mold is reasonable in design, simple in structure, convenient to assemble and disassemble and high in reusability, and the forming quality of the annular corrugated cylindrical shell is guaranteed through cooperation of the positioning disc, the inner cylinder and the outer cylinder. And through the four-section design of the outer cylindrical mold, the problem that prepreg is easily extruded from a mold closing seam during mold closing of the annular corrugated cylindrical shell is solved.

The invention is suitable for the technical field of electric power marketing management, and provides an electric power marketing method and system based on an intelligent management platform, and the method comprises the steps: obtaining current fluctuation curves of target core equipment after completing a target processing flow for a plurality of times, and sequentially interpreting the current fluctuation curves, and judging whether the current fluctuation curves have the condition of frequent current change in the same proceeding time period or not. The method can intelligently and scientifically analyze the abnormal fluctuation condition of the target core equipment in the current supply process, and judges whether the fluctuation is associated with the complex process stage or not. According to the method, the current fluctuation curve is interpreted for multiple times, and the abnormal fluctuation time period is matched with the specific process step, so that whether the fluctuation abnormity corresponds to execution of a plurality of subdivided process actions or not can be accurately identified, and deep analysis is provided for the running state and the process stability of equipment.