Multi-optical-color optically-variable printing device and printing method thereof, and readable storage medium

A multi-optical-color optically-variable printing device, comprising:

• a conveying unit for conveying a printing stock;
• a screen printing unit for printing ink or varnish containing a magnetic substance on the printing stock;
• and
• a plurality of optical-color optically-variable pattern forming units, wherein the plurality of optical-color optically-variable pattern forming units are respectively configured to form optical-color optically-variable patterns on different regions of the printing stock;
• each optical-color optically-variable pattern forming unit comprises:
• magnetizing rollers, wherein magnetic orientation components are arranged on each magnetizing roller and configured to perform magnetic orientation on the printing stock;
• and
• pre-drying and curing devices for pre-drying and curing the printing stock;
• wherein the conveying unit, the screen printing unit and the plurality of optical-color optically-variable pattern forming units are arranged successively in the conveying direction of the printing stock;
• wherein the magnetic orientation components of at least two optical-color optically-variable pattern forming units have different magnetization effects from each other, the pre-drying and curing devices are arranged opposite to each other at the outer sides of the magnetic orientation components, and in the process that the magnetic orientation components conduct magnetic orientation to the printing stock, the pre-drying and curing device conducts pre-drying and curing to the printing stock at the same time;
• wherein the pre-drying and curing device comprises an optical mask curing device, the optical mask curing device is fixedly arranged and configured to project a dynamically refreshable variable optical field image-text, and the variable optical field image-text and the printing stock synchronously move a predetermined distance;
• wherein the multi-optical-color optically-variable printing device comprises a sensor, and the sensor is configured to collect the position information and speed information of the printing stock;
• and
• wherein the multi-optical-color optically-variable printing device further comprises:
• a first rearrangement magnetization device, wherein the first rearrangement magnetization device is provided between the screen printing unit and the optical-color optically-variable pattern forming unit;
• and
• a second rearrangement magnetization device, wherein the second rearrangement magnetization device is provided between multiple optical-color optically-variable pattern forming units,
• wherein when ink or varnish is printed on the printing stock, the magnetic pigment sheets therein are arranged in a disorderly and irregular manner, and when the printing stock is conveyed to the first rearrangement magnetization device and the second rearrangement magnetization device, magnetic pigment sheets in the ink or varnish containing a magnetic substance are rearranged parallel to the printing stock;
• wherein the pre-drying and curing device further comprises:
• a curing device adjustment mechanism, wherein the curing device adjustment mechanism comprises a fixing beam, a motor and a guide rail, and the fixing beam extends along the axial direction of the magnetizing roller, the optical mask curing device is provided on the fixing beam, and the motor drives the optical mask curing device to move along the fixing beam;
• the fixing beam comprises a horizontal plate and a vertical plate, the horizontal plate and the vertical plate are connected to each other, and the motor is provided on the horizontal plate;
• the guide rail comprises a linear guide rail and a curing device guide rail, the linear guide rail is located on the horizontal plate, and the curing device guide rail is located on the vertical plate;
• multiple optical mask curing devices are respectively connected to the linear guide rail, and they can move on the fixing beam;
• the optical mask curing device comprises:
• a light source for emitting light;
• a controller for receiving the position information and the speed information of the sensor and further for receiving, storing and processing image-text data for projection, and generating a control signal based on the position information, the speed information and the image-text data for projection;
• a lens;
• and
• a spatial light modulator for receiving the light emitted by the light source and the control signal to project the variable optical field image-text through the lens.