7results about How to "Improve appearance pass rate" patented technology

The utility model relates to heat shrinkable film packaging bag forming device technical field discloses a kind of heat shrinkable film packaging bag forming device, including workbench, the inside of the workbench is provided with conveying device, the top of the workbench is fixedly installed with heating frame back, the top of the workbench and located the front of heating frame is provided with positioning assembly, the positioning assembly includes fixed frame, first motor, guide rod and slide bar, the fixed frame is fixedly installed on the outer wall of workbench, by the positioning assembly of being set, staff starts first motor, drives two groups of moving block to move towards by two-way screw rod, adjusts baffle spacing, realizes different width material center positioning, reduces the problem that heat shrinkable film shrinks unevenly, if material position deviates, push operating rod makes adjusting plate slide along slide bar, push material to baffle middle, ensure its with optimum position enters heating frame, guarantee heat shrinkable film even shrink.

The utility model provides a kind of spraying tool for automobile parts, belong to automobile parts spraying technical field, including base, the upper portion of base is provided with gantry support, the inside of gantry support is provided with tool support, the inside of tool support is provided with multiple long rods for installing workpiece and adjusting long rod;Adjusting long rod includes multiple arc plates, the inside of arc plate is provided with multiple T-shaped connecting columns, multiple arc plates are connected by T-shaped connecting column and elastic drawstring between;The inside of arc plate both ends is respectively provided with sub thread part, and the sub thread part of the corresponding end of multiple arc plates can be combined into a tapered screw hole, and the both ends of pipe body structure are respectively screwed with conical stud through tapered screw hole.The utility model through adjustable long rod, skid connection and stable structure, not only can effectively improve adaptability and efficiency, reduce shaking and shielding, but also can guarantee spraying quality, reduce cost.

The utility model discloses a kind of composite photovoltaic frame pultrusion production lines, including the glass fiber yarn frame, pultrusion mould, traction machine and cutting machine arranged in sequence;Felt frame and dehumidification integrated device are provided between the glass fiber yarn frame and pultrusion mould, felt frame and dehumidification integrated device include dehumidifier and felt frame, and the top and bottom of dehumidifier are respectively provided with felt frame;Production line further includes glass fiber yarn tension adjusting device, which is arranged close to pultrusion mould.Dehumidifier and felt frame are integrated design, compact structure, small floor area, and glass fiber yarn tension adjusting device is close to pultrusion mould, and the adjustment effect of yarn tension is more direct.

This invention belongs to the field of hot melt adhesive film technology, specifically relating to a hot melt adhesive film for bonding PET substrates and its preparation method, comprising the following components by weight: 40-50 parts of silane coupling agent modified atactic polypropylene, 40-50 parts of low-crystallinity TPU hot melt adhesive, and 10-15 parts of a special tackifying resin; wherein the silane coupling agent modified atactic polypropylene comprises the following components by weight: 100 parts of atactic polypropylene, 0.05-0.15 parts of peroxide ester initiator, and 0.05-1 part of vinyl active silane coupling agent. The beneficial effect of this invention is that by employing a directional grafting modification system combining vinyl silane coupling agent and tert-butyl peroxycarbonate-2-ethylhexyl peroxide, molecular-level activation modification of atactic polypropylene can be precisely performed, stably implanting polar active functional groups into the inert polyolefin molecular chain, effectively improving the chemical interfacial bonding force with the inert PET substrate, unlike traditional physical blending modification, effectively improving the long-term adhesion.

The application relates to a synergistic casting-rolling method for eliminating bright star defects in the dark surface of 8011 aluminum alloy single zero foil, and relates to the technical field of aluminum alloy casting-rolling processing. The method comprises the following steps: S1, melt refining: introducing aluminum alloy melt into a holding furnace for refining, and the refining time interval is 2.5-3.5 h / time; S2, casting-rolling cooling: adopting circulating cooling water to cool the casting-rolling roller, the water pressure is controlled to be 0.42-0.48 MPa, and the water temperature is controlled to be 35-40 DEG C; and S3, casting-rolling forming: sending the melt into the casting-rolling roller through a casting nozzle for casting-rolling, the thickness of the strip is controlled to be 6.3-6.6 mm, and the rolling strip speed is controlled to be 700-730 mm / min. Through multi-dimensional synergy of melt purity control, cooling strength improvement, blank thinning and strip speed reduction, the application refines the grains in the casting-rolling area, effectively inhibits the segregation and precipitation of coarse Al-Fe-Si brittle intermetallic compounds, eliminates the bright star defects in the dark surface of the foil caused by the crushing of brittle phases in the subsequent cold rolling ultra-thinning process, and significantly improves the surface quality and the yield of the single zero foil.

This invention discloses a method for preserving plant exosomes, belonging to the field of biotechnology. This method achieves rapid preservation of plant exosomes through vacuum freeze-drying combined with a special freeze-drying protectant. The method effectively protects the structural integrity and biological activity of plant exosomes, and the resulting dried plant exosome samples exhibit good stability and can be stored at room temperature for a relatively long period.

The invention discloses a three-section type hollow flexible circuit board, a PDLC (Polymer Dispersed Liquid Crystal) dimming glass assembly and a preparation method thereof, and belongs to the technical field of polymer dispersed liquid crystal dimming film manufacturing. A plurality of functional hollowed-out structures are symmetrically distributed on the two sides of the flexible circuit board in the width direction of the flexible circuit board. In the length direction, each functional hollow-out structure can be sequentially divided into a pressing functional area (the length is larger than or equal to 1 mm), a laminating buffer area (the length is determined according to the size of the glass) and an exposed exhaust area (the length is larger than or equal to 5 mm). A mechanical anchoring interface is formed by embedding the press-fit functional area with the anisotropic conductive adhesive film, so that the connection strength is improved; the lamination buffer region absorbs thermal stress and provides a flowing channel for the packaging adhesive film; the exposed exhaust region extends to the outside of the glass substrate, establishing a direct exhaust path during lamination. The problems that a traditional FPC is low in connection reliability, bubbles remain and thermal stress is concentrated are solved, and the assembling yield and long-term reliability of the PDLC dimming film are improved.