11results about How to "Reduce disconnection rate" patented technology

The utility model discloses a sounding unit, including basin stand, magnetic circuit system, conducting centering disk and a plurality of voice coil, magnetic circuit system is connected basin stand, magnetic circuit system includes yoke, and the central magnetic subassembly and first side magnetic structure that are respectively provided on yoke, central magnetic subassembly is located between at least one group of two oppositely arranged first side magnetic structure, the central magnetic assembly comprises a plurality of central magnetic structures which are arranged side by side, the yoke is provided with a window, two opposite side edges of the window are respectively connected with flanges, and the flanges are provided with openings; the voice coils and the central magnetic structures are arranged in a one-to-one correspondence manner, and partial areas of the voice coils are located between the central magnetic structures and the flanges; the conduction centering disk comprises an inner mounting part, a cantilever part and an outer mounting part which are connected in sequence, a partial area of the cantilever part corresponds to the window and is located between the two flanges, one end of the inner mounting part penetrates through the opening and is fixedly connected with the voice coil, and the outer mounting part is connected with the basin stand. The sound production unit has high performance.

The utility model provides a kind of double motor sewing machine, including shell, lower motor is installed in the lower end inside shell back, the motor shaft front end of lower motor is connected with pinion, motor shaft sleeve is set on motor shaft, pinion and the large gear on the cloth feeding main shaft are mutually engaged, the drive gear is connected in the front end of cloth feeding main shaft, and the upper cloth feeding wheel is installed in drive gear by universal shaft connection;The drive gear on the cloth feeding main shaft and lower gear are mutually engaged, and lower gear is fixedly connected in the rear end of lower cloth feeding shaft, and lower cloth feeding gear is installed in the front end of lower cloth feeding shaft connection.The utility model, by setting the transmission structure that lower motor drives pinion and the large gear of cloth feeding main shaft engages, cooperate drive gear and universal shaft connection upper cloth feeding wheel, lower gear linkage lower cloth feeding shaft and lower cloth feeding gear, make upper and lower cloth feeding wheel rotate at the same speed, form the synchronous driving force of clamping cloth, realize parallel synchronous feeding, avoid cloth skew or wrinkle, improve sewing precision.

The present application relates to the field of aluminum nitride crystal growth processing, and particularly relates to a method for reducing cutting stress of AlN crystal processing. The method is as follows: a hollow cylinder as a buffer layer and an AlN crystal are both adhered to a metal plate through paraffin; then glue is poured into the hollow cylinder, so that the glue completely wraps the crystal; after the glue solidifies, the bottom of the metal plate is heated, the paraffin is melted, and then the metal plate is detached to obtain a sample to be cut; the sample is cut and the edge is trimmed to obtain a regular AlN wafer. The present application sets a buffer layer outside the AlN crystal to avoid damage of stress to the crystal; when the cutting line contacts the crystal, high stress is generated, the buffer layer can gradually release the stress and gradually transfer the stress to the crystal, so that the crystal can be simply and effectively protected, the crystal is prevented from cracking, and the complete AlN wafer can be cut; the buffer layer avoids the direct contact of the cutting line and the crystal, reduces the probability of cutting line breakage, and enables efficient cutting.

The utility model relates to the technical field of beam strander equipment, in particular to a modularized adjustable stranding mechanism of a beam strander, which comprises a hollow main shaft. Power equipment for controlling the hollow main shaft to rotate is installed on the hollow main shaft, the hollow main shaft is connected with an annular support through spokes arranged at the end of the hollow main shaft, an annular groove is formed in the middle of the outer side face of the annular support, annular bosses are arranged on the edges of the left side and the right side of the annular support, and positioning holes are annularly and evenly distributed in the annular bosses; through the split type modular design, such as the slidable arc-shaped sliding block, the annular boss with the positioning hole and the detachable wire harness mounting frame, rapid adjustment of stranding parameters is achieved, an operator can complete stepless adjustment of the pitch and the stranding angle only by inserting a stud with a head into the positioning hole, a mold does not need to be replaced or a machine does not need to be stopped to disassemble components, and the production efficiency is improved. And the remodeling time is shortened, and the flexibility and efficiency of multi-specification wire production are remarkably improved.

The invention relates to the technical field of silicon wafer cooling liquid, in particular to cooling liquid for diamond wire cutting of a solar silicon wafer and a preparation method thereof.The preparation method comprises the steps that raw materials are mixed, and the raw materials comprise, by weight, 70-80 parts of a solvent, 5-8 parts of a dispersing agent, 3-5 parts of a wetting agent, 0.2-0.5 part of a heat conduction agent and 0.1-0.2 part of a pH regulator; the cooling liquid can effectively reduce the line breaking rate and the smudginess rate of silicon wafer cutting.

The utility model discloses a main line knotless connection splayed ring, comprising a hollow cap, the top end of which is provided with a through hole in a penetrating manner; a sub-line connecting ring is rotatably arranged at the bottom end of the structural column; the connecting column is used for connecting the hollow cap and the structural column into an integrated structure; the bottom face of the hollow cap is provided with an annular blocking face, the inner diameter of the annular blocking face is larger than that of the penetrating hole, so that a knot of the main line which penetrates through the penetrating hole and is knotted is limited by the annular blocking face in a pull-back state, and therefore a knot-free self-locking connecting structure of the main line is formed. The bottom end of the structural column is provided with a cavity, and the sub-line connecting ring is rotatably arranged in the cavity, so that the sub-line can freely rotate by 360 degrees relative to the structural column in use. The structure can improve the connection strength, simplify the operation and improve the anti-winding performance, and is suitable for various fishing environments.

The application discloses a display panel and a display device. The first metal layer is arranged on the substrate and comprises a first signal transmission part; the insulating layer covers the substrate and the first metal layer, and comprises a protruding part covering the first signal transmission part; the second metal layer is arranged on the side of the insulating layer away from the first metal layer and comprises a second signal transmission part, and the second signal transmission part covers at least part of the side wall of the protruding part; the protruding part comprises a first sub-layer and a second sub-layer, and a first opening is arranged at the side wall, the first sub-layer is located on the side of the second sub-layer away from the first signal transmission part, the second signal transmission part extends into the first opening and is in contact with the second sub-layer, and the adhesion between the second sub-layer and the second signal transmission part is greater than the adhesion between the first sub-layer and the second signal transmission part. The application can reduce the probability of disconnection of the second signal transmission part at the climbing position, and improve the yield of the display panel.

The present application belongs to copper wire processing technical field, specifically relates to a copper and silk hot tinning device, including the reel stand, annealing furnace, pickling tank, tin furnace and take-up machine arranged in sequence, further include: offline measurement device, for when the take-up reel is not installed, the cylindrical surface of the take-up reel is three-dimensional profile scanning, and the offline profile data associated with the unique identification of the take-up reel is generated, lifting trailer is used to carry the take-up reel, and the take-up reel can be transported from the offline measurement device to the take-up machine, and the take-up reel is installed on the take-up spindle of the take-up machine, online measurement device is arranged on the take-up machine, and the online measurement device includes angle encoder and laser displacement sensor. Through the method that the offline measurement is combined with the online calibration, the advantages that the complete three-dimensional profile can be obtained by the offline measurement are fully utilized, and the error caused by the installation eccentricity is eliminated by the online single-point measurement, so that the high-precision speed feedforward control is realized.

The utility model relates to a fine wire drawing machine, and provides a multi-stage mold wire jumping prevention type medium-sized fine wire drawing machine, which comprises a base, an equipment main body, a bin gate and the like, an equipment body is arranged at the top of the base, a processing bin is arranged in the equipment body, round holes allowing wires to penetrate through are formed in the left side and the right side of the equipment body, a bin door is arranged on the front side of the equipment body, and the bin door is rotationally arranged on the equipment body and is opened and closed through a movable supporting rod. According to the utility model, the closed lubricating component is arranged on a wire stretching transmission path, and a high-pressure atomization technology is adopted in the component, so that a lubricant uniformly covers the surface of a wire; and in combination with the dynamically adjusted sliding seat, the tension of the wire rod is automatically adjusted, wire jumping, wire breakage and scratches are prevented, the die abrasion and the wire breakage rate are remarkably reduced, manual intervention is reduced, and the high-precision and high-efficiency machining requirements of the superfine wire rod are met.

The utility model provides a kind of embroidery machine independent presser foot machine head, it is related to embroidery equipment technical field, including shell, the inside installation of shell has presser foot drive crank, the side of presser foot drive crank is connected with needle bar drive crank, the rear end of shell is connected with presser foot bottom dead point, the bottom of shell is connected with presser foot driver, the outside of presser foot driver is connected with cushion block.In the utility model, needle bar, presser foot, thread picking sewing three big mechanisms are independently operated, each mechanism uses a cam to drive, a total of three cams are used, the stress of each component is greatly reduced, and the durability of the parts can be guaranteed during high-speed operation. The needle bar module, presser foot module and thread picking module operate independently and are not related to each other. The driving of the three is not associated, but only related in time. This makes the sewing state more stable. It can reduce the thread breakage rate and improve the quality of embroidery products.

The invention discloses a bridge crack segmentation method based on hierarchical curvature mask and neural topology evolution, and the method comprises the steps: obtaining a bridge image, executing two-dimensional frequency domain decoupling preprocessing, and separating a low-frequency illumination background through a band elimination filter; calculating a Hessian matrix of the feature tensor to extract a tubular main curvature, generating a layered mask to reserve the fracture skeleton features and executing sparse reconstruction; global priori of the visual basis large model is injected into the backbone network by using a frequency domain low-rank feature adapter, and global context features are extracted in combination with a discretized selective state-space equation; introducing continuous implicit neural representation, and converting discrete pixel segmentation into probability field regression of a continuous coordinate space; the continuous coherence theory in algebraic topology is introduced in the fine tuning stage, and penalty constraint is applied to fracture disconnection errors by calculating the Wasserstein distance of a topological persistence graph. According to the method, discrete quantization errors are effectively overcome, and segmentation connectivity and precision under a complex background are improved.