Dry-net curved surface screen printing machine is a machine that adopts a flat screen plate to print on the curved surface.
The principle of flat screen printer with a curved surface a-roller bearing b-axis bearing c-inlaid bearing. During printing, the flat screen printing plate and the substrate move while the squeegee is stationary. The flat screen printing plate is clamped on the frame by the flat screen curved screen printing machine to move at a uniform speed, and the substrate placed on the supporting device rotates due to the friction of the screen plate. The line speed of the curved substrate at the nip line is the same as the speed of the flat screen plate to realize the squeegee printing.
Theoretically, the embossing line should be at the highest busbar of the surface printing substrate to facilitate increasing the off-web angle and ensuring the printing quality. For the convenience of adjustment, the squeegee generally adopts an apex angle of 60°±15°, and it is required to be able to adjust the verticality and the up-down dimension. Adjustment to vertical is to ensure that the edge line does not produce lateral shift when adjusting up and down, and always aligns with the highest bus A; the squeegee with vertical angle of 60°±15° is used to ensure that the squeegee angle is formed after vertical installation. α. In actual adjustment, in order to ensure that the plane screen printing plate and the surface printing material are detached in time, the imprinting line may be slightly forward. In particular, when the substrate diameter is relatively large, the imprinting line must be located forward. The support device for the curved printing is All kinds of special devices are designed and manufactured by the user according to the product requirements.
Cylindrical containers or conical containers can be printed with two pairs of roller bearings on the curved surface, sleeve-type and cup-type bushing bearings with a length to diameter ratio of less than 1.5, and flexible hollow containers can be supported by inflatable devices. The ellipse is approximately a part of a cylindrical surface that can be supported by a cylindrical mosaic.
The principle of printing on the surface of the cone is basically the same as the principle of printing on the surface of the cylinder. The difference is the graphic shape of the screen printing plate and the movement form of the screen printing plate. When making the screen printing plate used for the surface printing of the cone, it is necessary to first draw the unfolded view of the surface of the cone, and find the center of the sector based on the unfolded view, and then select the appropriate frame to make the screen plate.
On the plate efgh that can completely accommodate the fan-shaped abed, a printing plate conforming to the fan shape is produced. Fix the right-angle bar on the version efgh and install the o-axis as a fan-shaped version. Then, as with the printing of the surface of the cylinder, four rollers are used to support the substrate under the plate, the blade is fixed, and the plate is moved in a fan shape, and the surface of the cone plate can be printed by pressing the blade. During printing, the conical printing is in line contact with the screen plate under a certain squeegee pressure; when the screen printing plate moves horizontally around the axis of the fan-shaped development image, the printing material is rotated synchronously on the supporting device. Sports; ink under the pressure of the squeegee, missed to the surface of the substrate to complete the printing.
The principle of flat screen printer with a curved surface a-roller bearing b-axis bearing c-inlaid bearing. During printing, the flat screen printing plate and the substrate move while the squeegee is stationary. The flat screen printing plate is clamped on the frame by the flat screen curved screen printing machine to move at a uniform speed, and the substrate placed on the supporting device rotates due to the friction of the screen plate. The line speed of the curved substrate at the nip line is the same as the speed of the flat screen plate to realize the squeegee printing.
Theoretically, the embossing line should be at the highest busbar of the surface printing substrate to facilitate increasing the off-web angle and ensuring the printing quality. For the convenience of adjustment, the squeegee generally adopts an apex angle of 60°±15°, and it is required to be able to adjust the verticality and the up-down dimension. Adjustment to vertical is to ensure that the edge line does not produce lateral shift when adjusting up and down, and always aligns with the highest bus A; the squeegee with vertical angle of 60°±15° is used to ensure that the squeegee angle is formed after vertical installation. α. In actual adjustment, in order to ensure that the plane screen printing plate and the surface printing material are detached in time, the imprinting line may be slightly forward. In particular, when the substrate diameter is relatively large, the imprinting line must be located forward. The support device for the curved printing is All kinds of special devices are designed and manufactured by the user according to the product requirements.
Cylindrical containers or conical containers can be printed with two pairs of roller bearings on the curved surface, sleeve-type and cup-type bushing bearings with a length to diameter ratio of less than 1.5, and flexible hollow containers can be supported by inflatable devices. The ellipse is approximately a part of a cylindrical surface that can be supported by a cylindrical mosaic.
The principle of printing on the surface of the cone is basically the same as the principle of printing on the surface of the cylinder. The difference is the graphic shape of the screen printing plate and the movement form of the screen printing plate. When making the screen printing plate used for the surface printing of the cone, it is necessary to first draw the unfolded view of the surface of the cone, and find the center of the sector based on the unfolded view, and then select the appropriate frame to make the screen plate.
On the plate efgh that can completely accommodate the fan-shaped abed, a printing plate conforming to the fan shape is produced. Fix the right-angle bar on the version efgh and install the o-axis as a fan-shaped version. Then, as with the printing of the surface of the cylinder, four rollers are used to support the substrate under the plate, the blade is fixed, and the plate is moved in a fan shape, and the surface of the cone plate can be printed by pressing the blade. During printing, the conical printing is in line contact with the screen plate under a certain squeegee pressure; when the screen printing plate moves horizontally around the axis of the fan-shaped development image, the printing material is rotated synchronously on the supporting device. Sports; ink under the pressure of the squeegee, missed to the surface of the substrate to complete the printing.
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