5results about How to "Avoid whitening" patented technology

The utility model discloses an injection mold rapid forming device which comprises a base, a transverse rod is arranged at the position, close to the bottom, in the base, a motor is fixedly installed at the position, close to the center, of the bottom in the base, a second gear is fixedly installed in the center of the surface of the transverse rod, and the bottom of the second gear is connected with a first gear in a meshed mode. According to the rapid molding device for the injection mold, through the design of a transverse rod, a motor, a first gear, a second gear, cams, rolling grooves, a transverse plate, balls, a sleeve, an ejector rod, a first spring and a second spring, the motor drives the first gear to be in meshing transmission to drive the transverse rod to rotate synchronously, so that the rolling grooves in the outer walls of the cams on the two sides are in rolling contact with the balls at the bottom of the transverse plate; when the transverse plate ascends, the ejector rod in the sleeve firstly makes flexible contact with a product in the lower die through the pre-tightening force of the first spring, initial impact force is effectively absorbed, and ejection marks or deformation caused by rigid collision is avoided.

The invention discloses a thermoplastic printing material for material stacking type color 3D printing and an optical parameter regulation and control method thereof.The thermoplastic printing material uses PLA and / or PETG as a matrix, the transparency, the light scattering characteristic and the coloring absorption characteristic are cooperatively regulated and controlled, and the target color overlapping effect of the color overlapping behavior of multiple layers of materials is combined; reverse optimization is carried out on optical parameters of the material, so that the material has limited but sufficient light transmissivity under the single-layer printing thickness, complete color development can be realized under limited-layer stacking, meanwhile, an upper-layer material cannot completely shield a lower-layer material, and color desaturation caused by too high haze is avoided, so that a stable and predictable multi-layer color stacking effect is formed; the method can be used for constructing a material stacking scheme database, and high-color quasi-color 3D printing is achieved.

The invention relates to the technical field of high polymer material auxiliaries, and discloses a low-VOC high-weather-resistance PCR-PP composite material and a preparation method thereof.The low-VOC high-weather-resistance PCR-PP composite material is prepared from, by weight, 5-15 parts of a main stable component containing a piperidine ring structure, 2-8 parts of aliphatic polyol with the hydroxyl value being 1600-1650 mgKOH / g, 10-30 parts of organic modified magnesium-aluminum hydrotalcite with the interlayer spacing larger than 2.6 nm, 5-15 parts of an auxiliary stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable component containing a main stable Components are compounded through 110 deposition and 130 wetting, a hydrogen bond network coating layer with the thickness of 10-30 nm is formed in a 180-210 melting shear field, a physical pinning structure is constructed by means of intermolecular acting force among the components, diffusion activation energy of main stable components in a matrix is improved, migration loss is inhibited, and the bonding strength of the main stable components is improved. The alkaline active sites of the modified magnesium-aluminum hydrotalcite are used for in-situ neutralization of acidic oxidation intermediates generated by aging of regenerated polypropylene, so that an odor source is eliminated.

The application discloses a kind of router shell continuous injection molding equipment and molding process, it is related to injection molding equipment technical field, including machine tool, fixedly connected in the top of machine tool fixed die assembly and injection system;Fixed die assembly is close to the part of four corners and is equipped with through-hole, still include: linkage rod, slidably be internally provided in through-hole;Movable die assembly is provided with two groups, and is respectively installed in the two ends of linkage rod.The application is cooperated by setting symmetrical double movable die assembly and one fixed die assembly with double cavity, and is equipped with the moving assembly of making double movable die alternate operation, and the equipment realizes the real double position continuous production, when one side position is in injection, pressure maintaining or cooling phase, the other side position can carry out opening mould, ejection demoulding and closing mould preparation etc. action in synchronization, to overlap completely in time with the auxiliary process and main molding process which originally serial, must wait, significantly reduce equipment idle waiting period, greatly improve equipment utilization and production efficiency.