7results about How to "The printing process is simple" patented technology

The invention discloses an anti-counterfeiting identification method based on a random fine texture pattern. The anti-counterfeiting identification method comprises the following steps: S1) generating an original identification image of a coding identification or an image-text identification; s2) generating an image of a random fine texture pattern for ink mark diffusion; s3) combining the random fine texture image with the original identification image to form an identification image; s4) printing an identification image containing a random fine texture pattern on the printing stock; s5) carrying out image acquisition on the fine texture ink mark pattern after the ink mark diffusion effect in the printing process, and binding the fine texture ink mark pattern with code identification or image-text identification information to serve as an anti-counterfeiting filing image; and S6) comparing the similarity between the image of the fine texture ink mark pattern on the printing stock and the anti-counterfeiting filing image to realize authenticity discrimination. According to the anti-counterfeiting identification method, the printing process is integrally formed, the printing process is simple, and the identification accuracy is high; the method is suitable for printing equipment with various resolutions in the market.

The invention provides a support-free forming method for laser powder bed melting, and relates to the technical field of metal additive manufacturing, and the horizontal support-free forming method for laser powder bed melting comprises the following steps: S1, printing a first-layer support-free overhanging surface by using an out-of-focus laser beam, so that a first-layer metal powder is in a sintering state, and a first-layer sintering layer is formed; s2, printing a predetermined number of layers of support-free overhanging surfaces layer by layer by using an out-of-focus laser beam, melting each new printing layer, remelting the previous printing layer, and avoiding remelting to the lower surface of the first sintering layer; and S3, after printing of the support-free overhanging surface with the preset number of layers is completed, subsequent layer printing is conducted. The first sintering layer is printed by using the out-of-focus laser beam, so that a supporting foundation is provided for a subsequent overhanging structure, and the problem of collapse of the first layer is avoided. Fusion and combination of each new printing layer and the previous printing layer are controlled, remelting to the lower surface of the first layer is avoided, the upper surface and the lower surface which are not supported are smooth, and powder adhesion is avoided.

The present invention discloses a composite material and a preparation method thereof, wherein the steps are as follows: firstly, determining the composite material matrix structure to be printed, and using 3D modeling software to establish a composite material matrix model; then determining the planar fiber layer to be printed, and using 3D printing technology to print the composite material skeleton formed by stacking the planar fiber layers; in the process of printing the composite material skeleton, reserving channels according to the matrix model, and implanting fiber bundles in the channels of the printed composite material skeleton; and finally heating and melting the whole, solidifying and forming, to form the composite material. The method innovates the composite material molding method, and optimizes the traditional multi-step molding path of "fiber-preform-composite" to a one-step method; the method provides a technical solution for the rapid and low-cost preparation of composite materials.

The invention relates to a preparation method and application of a multifunctional enzyme-containing ink material with good conductivity, solution processability, biocompatibility, aqueous phase stability and pollution resistance, and provides a conductive bio-ink product with solution processability, which simplifies printing, silk-screen printing, reel-to-reel and other processes, does not need subsequent treatment, and is suitable for industrial production. And the processing cost is greatly reduced. The ink has excellent solution processability and biocompatibility, and the formed material has good conductivity, biocompatibility and pollution resistance. The invention also provides a forming preparation method of the conductive bio-ink, the conductive bio-ink can be cured and formed and stably exists in a water phase environment, and a material formed by the conductive bio-ink has excellent conductivity and water phase stability by regulating and controlling the crosslinking temperature and the crosslinking time. A material formed by the prepared enzyme-containing conductive bio-ink also has good conductivity, biocompatibility and pollution resistance, and has good response and stability when stored in a complex protein environment. The preparation process is simple and easy to implement, the product can be subjected to solution processing, can be stably applied in a water phase, inhibits non-specific adhesion interference, is high in reliability and good in specificity of sensing detection during application, is wide in application and has a very good application prospect.

The invention relates to the technical field of 3D printing, and discloses an inner and outer diameter dynamically adjustable blood vessel printing spray head which comprises an inner diameter control mechanism, an outer diameter control mechanism and a machine base. The inner diameter control mechanism is driven by an internal push-pull type motor, the push-pull type motor is fixed to the installation frame, the lower end of the push-pull type motor is connected with a slidable push rod, and the push rod can push the inner diameter control mechanism so as to control the inner diameter. The outer diameter control mechanism is controlled through an external motor gear mechanism, a motor gear drives the control cover to rotate so as to drive the blades at the bottom of the spray head to be opened and closed, and the blades are opened and closed by changing the rotation angle so as to change the outer diameter size. According to the blood vessel printing spray head capable of dynamically adjusting the inner diameter and the outer diameter, the inner diameter and outer diameter parameters can be changed in real time in the printing process, blood vessels with variable tube diameters and wall thicknesses can be integrally printed, the customization flexibility and adaptability of blood vessel printing are improved, and the printing efficiency is improved.

The utility model relates to digital printing machine nozzle technical field, concretely relates to a digital printing machine nozzle adjusting mechanism, including nozzle dolly and set in the middle part of the bottom end of nozzle dolly and print structure, the bottom of nozzle dolly both ends are provided with the powder scattering structure, the powder scattering structure includes the rack fixed in the nozzle dolly and the movable assembly fixed in the rack outside, the movable assembly includes the outer frame of the sleeve setting in the rack outside and the drive motor of the sleeve setting in the inner side of outer frame, the outside fixed location frame of outer frame, the middle part of location frame is fixed with the powder scattering head sleeve, the output of drive motor is connected with gear transmission, and the gear keeps engagement with the rack, fixes and sets up with the powder scattering head and location frame, realizes the function of combination cabinet, the drive motor structure in movable assembly, can drive two sets of gear under the control of outside, since it keeps engagement with the rack, so the powder scattering head and location frame structure can move left and right along the rack, realizes the function of position initiative adjustment.

The utility model belongs to the technical field of ink-jet detection and removal of medicine bottle coatings, and particularly relates to an ink-jet detection and removal machine for medicine bottle coatings, which comprises a box support storage mechanism and a medicine bottle feeding mechanism, the medicine bottle feeding mechanism conveys medicine bottles to the medicine bottle conveying chain through the vertical-to-horizontal mechanism, the medicine bottle conveying chain is located below the coating mechanism, the medicine bottles are coated through the coating mechanism, then are contained in a box support through a crescent assembly, are pressed through the bottle pressing mechanism and then are conveyed to the ink jetting mechanism through a box support conveying belt, and the tail end of the ink jetting mechanism is connected with the detection and rejection mechanism. By adding a printing coating process, subsequent ink-jet printing display is clearer, and by adopting the arrangement of spraying a coating and loading and then spraying ink, the box support plays an indirect limiting role, the printing process is simplified, the printing content can be in a unified orientation, and implementation of a subsequent character detection function is facilitated.