Rotary printing equipment and its method

Abstract

The present invention discloses a rotary printing device and method thereof, which are a rotary printing device and method for automatically aligning patterns to improve machine operating efficiency. The present invention includes a paper feeding unit, a first printing unit, and multiple second printing units. Through the hardware design of the first sensing module and the second sensing module, the first sensing module is effectively used to sense the presence of a sheet of printed matter and change the rotation speed and orientation of the first printing module to print a pattern and a color block on the sheet of printed matter. The second sensing module is then used to sense the position of the color block to change the rotation speed, rotation phase, and orientation of the second printing module, and print another pattern and another color block on the sheet of printed matter. This effectively achieves the main advantages of being able to instantly adjust the corresponding positions of the front and rear patterns and color blocks to print an error-free pattern.

Description

Technical Field

[0001] The present invention relates to a rotary printing device and a method thereof, and more particularly to a rotary printing device and a rotary printing method capable of automatically aligning upper and lower layer patterns to significantly reduce setting and adjustment time and thus improve machine operation efficiency. Background Art

[0002] The printing process of a traditional printing mechanism first creates an image, such as text or a pattern, to be transferred onto a sheet of printable material, such as cardboard, by making a rubber plate. The rubber plate is then attached to the printing wheel of the printing mechanism. Finally, the image on the rubber plate, which is stained with ink, is transferred to the cardboard to complete the printed product. In traditional printing machines, the printable sheet is transported by rollers. That is, the sheet is conveyed from a conveyor platform to the first printing unit by rollers to print the first color. The sheet is then conveyed by rollers from the first printing unit to the second printing unit to print the second color, and so on. All the colors will be combined to form a formal pattern. However, The printable sheet conveyed by the roller cannot be properly fixed on the roller, so the printable sheet may shift due to conveyance or collision, resulting in printing errors. For example, the second color printed by the second printing unit cannot be combined with the second color printed by the first printing unit due to collision or offset. Therefore, how to effectively detect the orientation of the printable sheet or the orientation of the color pattern printed by the previous printing unit through innovative hardware design, and then adjust the orientation of the next print in real time, is a problem that developers and researchers in related industries such as printing institutions need to continuously strive to overcome and solve. Summary of the Invention

[0003] The main purpose of the present invention is to provide a rotary printing device and method thereof, in particular, a rotary printing device and a rotary printing method that can automatically align upper and lower layer patterns and significantly reduce the setting adjustment time to improve the machine operation efficiency. It mainly relies on the hardware design of the first sensing module and the second sensing module, effectively uses the first sensing module to sense the presence of the sheet printing material and changes the direction and orientation of the first printing module to print patterns and color blocks on the sheet printing material, and then uses the second sensing module to sense the position of the color block to change the rotation speed, rotation phase and orientation of the second printing module, and prints another pattern and another color block on the sheet printing material, thereby achieving the ability to instantly adjust the corresponding positions of the front and rear patterns and color blocks to print error-free patterns, and uses the automatic correction function to reduce manual operations to improve the overall printing machine operation rate.

[0004] In order to achieve the above-mentioned purpose, the inventors propose a rotary printing device for printing at least one sheet of printed matter, the rotary printing device comprising at least one paper feeding unit, a first printing unit, and a plurality of second printing units; the paper feeding unit comprises a conveying platform for placing and conveying the sheet of printed matter, and a roller module arranged at one end of the conveying platform, wherein the roller module conveys the sheet of printed matter from the conveying platform to a direction away from the conveying platform; the first printing unit comprises a first transmission module arranged at an end of the roller module away from the conveying platform, a first sensing module between the first transmission module and the roller module, and a first printing module arranged at one end of the first transmission module and electrically connected to the first sensing module, the first transmission module receiving the sheet of printed matter from the conveying platform When the first sensing module senses the sheet-like printed material transmitted from the roller module, the first printing module is driven to print at least one pattern and one color block on the sheet-like printed material; multiple second printing units are arranged horizontally side by side at an end of the first printing unit away from the paper feeding unit, each second printing unit includes a second transmission module, a second sensing module between the second transmission module and the first printing unit, and a second printing module arranged at one end of the second transmission module and electrically connected to the second sensing module. The second transmission module receives the sheet-like printed material transmitted from the first transmission module, and the second sensing module senses the corresponding position of the color block on the sheet-like printed material to adjust the rotation speed of the second printing module and print at least one other pattern and one other color block on the sheet-like printed material.

[0005] In the rotary printing device as described above, the sheet-like printed matter is in the form of corrugated paper, cardboard or ordinary paper.

[0006] In the rotary printing device as described above, the roller module includes two longitudinally arranged rollers, and the sheet-like printed material contacts the two rollers respectively and passes between the two rollers. The two rollers have different rotation directions to drive the sheet-like printed material forward in a direction away from the conveying platform.

[0007] In the rotary printing device as described above, the first transmission module may further include at least one first transmission wheel, and the sheet-like printed matter is transmitted between the first transmission wheel and the first printing module.

[0008] In the rotary printing device as described above, the first printing module at least includes a first roller, a first driving member for driving the first roller, and a first flexible printing plate wrapped around the first roller.

[0009] In the rotary printing device as described above, the first driving component at least includes a first phase motor and a first transverse movement mechanism.

[0010] In the rotary printing device as described above, the first driving component at least includes a first power motor and a first transverse movement mechanism.

[0011] In the rotary printing apparatus as described above, the first flexographic printing plate has a color for printing patterns and color blocks on a sheet-like printed material.

[0012] In the rotary printing device as described above, the color block is in the form of a square, a rectangle, a circle, a triangle, a line or any other shape.

[0013] In the rotary printing device as described above, the first sensing module is a light detection module or an image capture module.

[0014] In the rotary printing device described above, the first sensing module drives the first driving element according to a first time difference between the time when the printed material is detected and a first preset time, so as to change a rotation speed, a rotation phase and an orientation of the first roller.

[0015] In the rotary printing device as described above, the second transmission module may further include at least one second transmission wheel, and the sheet-like printed matter is transmitted between the second transmission wheel and the second printing module.

[0016] In the rotary printing device as described above, the second printing module at least includes a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the second roller.

[0017] In the rotary printing device as described above, the second driving member at least includes a second phase motor and a second transverse movement mechanism.

[0018] In the rotary printing device as described above, the second driving member at least includes a second power motor and a second transverse movement mechanism.

[0019] In the rotary printing apparatus as described above, the second flexographic printing plate has another color for printing patterns and color blocks on the sheet-like printed matter.

[0020] In the rotary printing device as described above, the color block is in the form of a square, a rectangle, a circle, a triangle, a line or any other shape.

[0021] In the rotary printing device as described above, the second sensing module is in the form of a light detection module or an image capture module.

[0022] In the rotary printing device as described above, the second sensing module drives the second driving member according to a second time difference between the time when the color block is detected and a second preset time, so as to change the direction and orientation of the second roller.

[0023] In order to achieve the implementation objectives of a rotary printing device, the inventors have developed the following rotary printing method. First, at least one sheet of printed material is placed on a conveying platform of a paper feeding unit, and the sheet of printed material is conveyed to a first printing unit by a roller module of the paper feeding unit; then, a first sensing module of the first printing unit is used to detect the sheet of printed material; subsequently, the first sensing module is used to drive the first printing module of the first printing unit to print at least one pattern and one color block on the sheet of printed material; then, a second sensing module of a second printing unit is used to detect the color block; finally, the second sensing module is used to drive the second printing module of the second printing unit to print at least one other pattern and one other color block on the sheet of printed material.

[0024] In the rotary printing method described above, the roller module includes two longitudinally arranged rollers, and the sheet-like printed material contacts the two rollers respectively and passes between the two rollers. The two rollers have different rotation directions to drive the sheet-like printed material in a direction away from the conveying platform.

[0025] In the rotary printing method as described above, the first printing module at least includes a first roller, a first driving member for driving the first roller, and a first flexible printing plate wrapped around the first roller.

[0026] In the rotary printing method as described above, the first flexographic printing plate has a color for printing patterns and color blocks on the sheet-like printed matter.

[0027] In the rotary printing method described above, the first sensing module drives the first driving element according to a first time difference between the time when the printed material is detected and a first preset time, so as to change a rotation speed, a rotation phase and an orientation of the first roller.

[0028] In the rotary printing method as described above, the second printing module at least includes a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the second roller.

[0029] In the rotary printing method as described above, the second flexographic printing plate has another color for printing patterns and color blocks on the sheet-like printed matter.

[0030] In the rotary printing method described above, the second sensing module drives the second driving element according to a second time difference between the time when the color block is detected and a second preset time, so as to change a rotation speed, a rotation phase and an orientation of the second roller.

[0031] Thus, the rotary printing equipment and method of the present invention mainly rely on the hardware design of the first sensing module and the second sensing module, effectively using the first sensing module to sense the presence of the sheet printed material and change the rotation speed, rotation phase and orientation of the first printing module to print patterns and color blocks on the sheet printed material, and then use the second sensing module to sense the position of the color block to change the rotation speed, rotation phase and orientation of the second printing module, and print another pattern and another color block on the sheet printed material, thereby achieving the main advantages of being able to instantly adjust the corresponding positions of the front and rear patterns and color blocks to print error-free patterns, and using the automatic correction function to reduce manual operations to improve the overall printing machine operation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the rotary printing equipment of the present invention.

[0033] Figure 2 This is a schematic diagram of the composition of the first printing module of a preferred embodiment of the rotary printing equipment of the present invention.

[0034] Figure 3 It is a schematic diagram of the first driving component of a preferred embodiment of the rotary printing equipment of the present invention.

[0035] Figure 4 This is a schematic diagram of the operation of the first driving member of a preferred embodiment of the rotary printing equipment of the present invention.

[0036] Figure 5 It is a schematic diagram of the first driving component of the second preferred embodiment of the rotary printing equipment of the present invention.

[0037] Figure 6 This is a schematic diagram of the operation of the first driving member of the second preferred embodiment of the rotary printing equipment of the present invention.

[0038] Figure 7 Schematic diagram (1) of a first sensing module sensing a sheet-like printed matter in a preferred embodiment of a rotary printing device of the present invention.

[0039] Figure 8 This is a schematic diagram (2) of the first sensing module sensing a sheet-like printed matter in a preferred embodiment of the rotary printing device of the present invention.

[0040] Figure 9 This is a schematic diagram of the positions of color blocks in a preferred embodiment of the rotary printing device of the present invention.

[0041] Figure 10 Schematic diagram of a first sensing module sensing a color block in a preferred embodiment of the rotary printing device of the present invention.

[0042] Figure 11This is a schematic diagram of the distance between color blocks in a preferred embodiment of the rotary printing device of the present invention.

[0043] Figure 12 Schematic diagram of color block displacement of a preferred embodiment of the rotary printing device of the present invention.

[0044] Figure 13 Schematic diagram of the first sensing module sensing the displacement of a color block in a preferred embodiment of the rotary printing device of the present invention.

[0045] Figure 14 This is a schematic diagram of color block position adjustment in a preferred embodiment of the rotary printing equipment of the present invention.

[0046] Figure 15 It is a flow chart of the steps of the rotary printing method of the present invention.

[0047] Description of the figure number:

[0048] 1: Rotary printing equipment

[0049] 11: Paper feeding unit

[0050] 111: Transmission Platform

[0051] 112: Roller module

[0052] 1121: Roller

[0053] 12: First printing unit

[0054] 121: First transmission module

[0055] 1211: First transmission wheel

[0056] 122: First sensing module

[0057] 123: First printing module

[0058] 1231: First roller

[0059] 1232: First driving member

[0060] 12321: First phase motor

[0061] 12322: First transverse movement mechanism

[0062] 12323: First Power Motor

[0063] 1233: The first flexographic printing plate

[0064] 13: Second printing unit

[0065] 131: Second transmission module

[0066] 1311: Second transmission wheel

[0067] 132: Second sensing module

[0068] 133: Second printing module

[0069] 2: Sheet printed matter

[0070] 21: Color Blocks

[0071] 22: Color Blocks

[0072] D1: First distance

[0073] D2: Second distance

[0074] L1: first length

[0075] L2: Second length

[0076] S1: Step 1

[0077] S2: Step 2

[0078] S3: Step 3

[0079] S4: Step 4

[0080] S5: Step 5

[0081] A1: First printing position

[0082] A2: Second printing position

[0083] θ: Rotation phase. DETAILED DESCRIPTION

[0084] First, see Figure 1The figure shows the overall structure of a preferred embodiment of the rotary printing device of the present invention, wherein the rotary printing device 1 of the present invention is used to print at least one sheet of printed matter 2, and the rotary printing device 1 is composed of at least one paper feeding unit 11, a first printing unit 12 and two second printing units 13, wherein the sheet of printed matter 2 is in the form of corrugated paper, cardboard or ordinary paper, and a preferred embodiment of the present invention prints the required pattern or color block on the sheet of printed matter 2 in the form of corrugated paper, wherein the color block is in the form of a square, rectangle, circle, triangle, line or any other shape, and in a preferred embodiment of the present invention, the color block 21 is positive. square form; thereby, the rotary printing equipment and method of the present invention mainly rely on the hardware design of the first sensing module and the second sensing module, effectively using the first sensing module to sense the presence of the sheet printing material and change the rotation speed, rotation phase and orientation of the first printing module to print patterns and color blocks on the sheet printing material, and then use the second sensing module to sense the position of the color block to change the rotation speed, rotation phase and orientation of the second printing module, and print another pattern and another color block on the sheet printing material, thereby achieving the main advantages of being able to instantly adjust the corresponding positions of the front and rear patterns and color blocks to print error-free patterns, and using the automatic correction function to reduce manual operations to improve the overall printing machine operation rate.

[0085] The paper feeding unit 11 is composed of at least a conveying platform 111 and a roller module 112. The conveying platform 111 is used to place and convey sheet-like printed materials 2 such as corrugated paper. The roller module 112 is arranged on the left side of the conveying platform 111. The roller module 112 conveys the sheet-like printed materials 2 from the conveying platform 111 in a direction away from the conveying platform 111, that is, transfers the sheet-like printed materials 2 from the right side to the left side to the first printing unit 12 arranged on the left side of the paper feeding unit 11. In addition, the roller module 112 includes two longitudinally arranged rollers 1121, and the sheet-like printed materials 2 such as corrugated paper are respectively in contact with the two rollers 1121 and pass between the two rollers 1121. The two rollers 1121 have different rotation directions to drive the sheet-like printed materials 2 such as corrugated paper to move in a direction away from the conveying platform 111 for transfer to the first printing unit 12.

[0086] The first printing unit 12 is composed of at least a first transmission module 121, a first sensing module 122, and a first printing module 123. The first transmission module 121, which includes at least a first transmission wheel 1211, is disposed at an end of the roller module 112 away from the transmission platform 111 to receive the sheet-like printed material 2 transmitted from the roller module 112 and transmit the sheet-like printed material 2 between the first transmission wheel 1211 and the first printing module 123. The first sensing module 122 is located between the first transmission module 121 and the first printing module 123. The first sensing module 122 is connected to the roller module 112 to sense the printed sheet 2 from the roller module 112. The first sensing module 122 is a light detection module or an image capture module. The first printing module 123 is disposed at the upper end of the first transmission module 121 and is electrically connected to the first sensing module 122. When the first sensing module 122, which is a light detection module, senses the printed sheet 2, it drives the first printing module 123 to print the pattern and the square color block 21 on the printed sheet 2.

[0087] Please also refer to Figures 2 to 4 FIG2 is a schematic diagram of the composition of the first printing module, the composition of the first driving member, and the actuation of the first driving member of a preferred embodiment of the rotary printing device of the present invention, wherein the first printing module 123 is composed of at least a first roller 1231, a first driving member 1232, and a first flexible printing plate 1233, wherein the first driving member 1232 is used to drive the first roller 1231, and the first driving member 1232 is composed of at least a first phase motor 12321 and a first The first driving member 1232 receives the position and contour of the sheet-like printed material 2 detected by the first sensing module 122, and then uses the first phase motor 12321 and the first transverse mechanism 12322 to respectively rotate the phase of the first roller 1231 or change the left and right displacement. The first flexible printing plate 1233 is wrapped around the outside of the first roller 1231 to carry a color to print the pattern and the color block 21 on the sheet-like printed material 2.

[0088] Please also refer to Figure 5 and Figure 6As shown, a schematic diagram of the first driving member composition and the first driving member actuation diagram of the second preferred embodiment of the rotary printing device of the present invention is shown, wherein the first printing module 123 is composed of at least a first roller 1231, a first driving member 1232 and a first flexible printing plate 1233, wherein the first driving member 1232 is used to drive the first roller 1231, and the first driving member 1232 is composed of at least a first power motor 12323 and a first transverse movement mechanism 12322. The first driving member 1232 receives the position and contour of the sheet printing material 2 detected by the first sensing module 122, and then uses the first power motor 12323 and the first transverse movement mechanism 12322 to accelerate or decelerate or change the left and right displacement of the first roller 1231, and the first flexible printing plate 1233 is covered on the outside of the first roller 1231 to carry a color to print the pattern and the color block 21 on the sheet printing material 2, as shown. Figure 6 As shown, the first roller 1231 can be accelerated in clockwise rotation. In actual implementation, the first power motor 12323 can be accelerated or decelerated to adjust the rotation direction according to needs.

[0089] Please also refer to Figure 7 and Figure 8 FIG. 1 is a schematic diagram of a first sensing module sensing a sheet-like printed object in a preferred embodiment of a rotary printing device of the present invention. Figure 1 , and the first sensing module sensing the sheet-like printed matter Figure 2 When the printed sheet 2 moves from right to left toward the first printing unit 12 and enters the detection range of the first sensing module 122, the first sensing module 122 drives the first phase motor 12321 and the first transverse movement mechanism 12322 to rotate the phase of the first roller 1231 or change the left-right displacement according to the detected position and contour of the printed sheet 2, for example: Figure 4 As shown, when the sheet of printed matter 2 is moving at a normal speed, the first roller 1231 rotates in a clockwise direction and prints at the first printing position A1. When the sheet of printed matter 2 moves slowly, the first sensing module 122 drives the first phase motor 12321 to adjust the rotation phase θ of the first roller 1231, so that the first printing position A1 is adjusted to the second printing position A2. Then, at the same original speed, the first roller 1231 rotates in a clockwise direction to match the time when the sheet of printed matter 2 reaches the first printing module 123, and the pattern and the color block 21 are printed at the correct position on the sheet of printed matter 2, wherein the color block 21 is separated from the boundary of the sheet of printed matter 2 by a first length L1 as shown in FIG. Figure 9 In actual implementation, the direction of rotation of the first roller 1231 and the direction of the rotation phase θ adjusted by the first phase motor 12321 can be adjusted according to needs.

[0090] Please also refer to Figures 9 to 11 FIG2 is a schematic diagram of the color block position, the color block sensing by the first sensing module, and the distance between the color blocks of a preferred embodiment of the rotary printing device of the present invention, wherein the second printing unit 13 is arranged horizontally side by side at an end of the first printing unit 12 away from the paper feeding unit 11, that is, the second printing unit 13 is arranged horizontally on the left side of the first printing unit 12, and another second printing unit 13 is arranged in sequence on the left side of the second printing unit 13, wherein each second printing unit 13 is composed of at least a second transmission module 131, a second sensing module 132 and a second printing module 133, wherein the second transmission module 131 including at least one second transmission wheel 1311 is arranged on the left side of the first printing unit 12 away from the paper feeding unit 11 to receive the sheet-like printed material 2 transmitted by the first transmission module 121 of the first printing unit 12, and to transfer the sheet-like printed material 2 to the second transmission wheel 13 11 and the second printing module 133, and the second sensing module 132 is interposed between the second transmission module 131 and the first printing unit 12 to sense the color block 21 on the sheet-like printed material 2 from the first printing unit 12, wherein the second sensing module 132 is a device such as a light detection module or an image capture module, and the second printing module 133 is arranged at the upper end of the second transmission module 131 and electrically connected to the second sensing module 132. When the second sensing module 132, which is presented in the form of a light detection module, senses the color block 21 printed by the first printing module 123 on the sheet-like printed material 2, it drives the second printing module 133 to print another pattern and another color block 22 in a square shape on the sheet-like printed material 2, wherein the other color block 22 printed by the second printing module 133 is separated from the color block 21 printed by the first printing module 123 by a first distance D1, as shown in FIG. Figure 11 As shown, the left side of the color block 22 is spaced from the left side of the color block 21 by a first distance D1.

[0091] Furthermore, the second printing module 133 is composed of at least a second roller (not shown), a second driving element (not shown), and a second flexographic printing plate (not shown). The second driving element is used to drive the second roller and is composed of at least a second phase motor (not shown) and a second transverse movement mechanism (not shown). The second driving element receives the position and outline of the color block 21 on the printed sheet 2 detected by the second sensing module 132 and then uses the second phase motor and the second transverse movement mechanism to rotate or shift the second roller in phase. The second flexographic printing plate is wrapped around the exterior of the second roller to carry a different color than the first flexographic printing plate 1233 to print another pattern and another color block 22 on the printed sheet 2. In actual implementation, the direction of rotation of the second roller and the direction of the rotation phase θ adjusted by the second phase motor can be adjusted as needed.

[0092] The second printing module 133 is composed of at least a second roller (not shown), a second drive element (not shown), and a second flexographic printing plate (not shown). The second drive element is used to drive the second roller and is composed of at least a second power motor (not shown) and a second transverse mechanism (not shown). The second drive element receives the position and outline of the color block 21 on the printed sheet 2 detected by the second sensing module 132. The second drive element then uses the second power motor and the second transverse mechanism to accelerate or decelerate the second roller or change its left and right displacement. The second flexographic printing plate is wrapped around the exterior of the second roller to carry a different color than the first flexographic printing plate 1233 to print another pattern and another color block 22 on the printed sheet 2. In actual implementation, the acceleration and deceleration of the second power motor can be adjusted to adjust the rotation direction as needed.

[0093] In other words, please also refer to Figures 12 to 14FIG. 1 is a diagram showing the displacement of color blocks, the displacement of color blocks sensed by the first sensing module, and the position adjustment of color blocks of a preferred embodiment of the rotary printing apparatus of the present invention. The first printing unit 12 prints the pattern (the pattern is omitted in the figure) and the color block 21 on the sheet-like printed material 2, and then the sheet-like printed material 2 moves from right to left toward the second printing unit 13 and enters the detection range of the second sensing module 132. The second sensing module 132 then drives the second phase motor and the second transverse shift mechanism to rotate the phase of the second roller or change the left-right displacement based on the detected position and contour of the color block 21 on the sheet-like printed material 2. For example, when the first printing unit 12 When the first transmission module 121 transmits the printed sheet 2 at a slower transmission speed than the normal transmission speed, the color block 21 of the printed sheet 2 is separated from the boundary of the printed sheet 2 by a second length L2, wherein the second length L2 is less than the first length L1. Then, the second sensing module 132 drives the second phase motor to adjust the rotation phase θ of the second roller to coordinate with the time when the color block 21 on the printed sheet 2 reaches the second printing module 133, so as to print another pattern and another color block 22 at the correct position on the printed sheet 2 at a second distance D2 from the color block 21, wherein the second distance D2 is equal to the first distance D1.

[0094] Also, see Figure 15 FIG. 1 is a flow chart of the steps of the rotary printing method of the present invention, wherein the rotary printing method includes the following steps:

[0095] Step 1 S1: Place at least one printed material 2 on a conveying platform 111 of a paper feeding unit 11, and convey the printed material 2 to a first printing unit 12 by the roller module 112 of the paper feeding unit 11; Figure 1 As shown, the paper feeding unit 11 is composed of at least a conveying platform 111 and a roller module 112. The conveying platform 111 is used to place and convey sheet-like printed materials 2 such as corrugated paper, and the roller module 112 is arranged on the left side of the conveying platform 111. The roller module 112 conveys the sheet-like printed materials 2 from the conveying platform 111 in a direction away from the conveying platform 111, that is, transfers the sheet-like printed materials 2 from the right side to the left side to the first printing unit 12 arranged on the left side of the paper feeding unit 11. In addition, the roller module 112 includes two longitudinally arranged rollers 1121, and the sheet-like printed materials 2 of corrugated paper are respectively in contact with the two rollers 1121 and pass between the two rollers 1121. The two rollers 1121 have different rotation directions to drive the sheet-like printed materials 2 of corrugated paper to move in a direction away from the conveying platform 111 for transfer to the first printing unit 12.

[0096] Step 2 S2 : using the first sensing module 122 of the first printing unit 12 to detect the printed material 2 .

[0097] Step 3 S3: Use the first sensing module 122 to drive the first printing module 123 of the first printing unit 12 to print at least one pattern and a color block 21 on the sheet-like printed material 2; Figure 7 and Figure 8 As shown, when the printed sheet 2 moves from right to left toward the first printing unit 12 and enters the detection range of the first sensing module 122, the first sensing module 122 drives the first phase motor 12321 and the first transverse movement mechanism 12322 to rotate the phase of the first roller 1231 or change the left-right displacement according to the position and contour of the printed sheet 2 detected. For example, Figure 4 As shown, when the sheet of printed matter 2 is moving at a normal speed, the first roller 1231 rotates in a clockwise direction and prints at the first printing position A1. When the sheet of printed matter 2 moves slowly, the first sensing module 122 drives the first phase motor 12321 to adjust the rotation phase θ of the first roller 1231, so that the first printing position A1 is adjusted to the second printing position A2. Then, at the same original speed, the first roller 1231 rotates in a clockwise direction to match the time when the sheet of printed matter 2 reaches the first printing module 123, and the pattern and the color block 21 are printed at the correct position on the sheet of printed matter 2, wherein the color block 21 is separated from the boundary of the sheet of printed matter 2 by a first length L1 (as shown in FIG. Figure 9 In actual implementation, the direction of rotation of the first roller 1231 and the direction of the rotation phase θ adjusted by the first phase motor 12321 can be adjusted according to needs.

[0098] Step 4 S4 : using the second sensing module 132 of the second printing unit 13 to detect the color block 21 .

[0099] Step 5 S5: Use the second sensing module 132 to drive the second printing module 133 of the second printing unit 13 to print at least one other pattern and one other color block 22 on the sheet-like printed material 2; Figures 12 to 14As shown, after the pattern and the color block 21 are printed on the first printing unit 12, the sheet of printed material 2 moves from right to left toward the direction of the second printing unit 13 and enters the detection range of the second sensing module 132. The second sensing module 132 then drives the second phase motor and the second transverse mechanism to rotate the phase of the second roller or change the left-right displacement according to the position and contour of the color block 21 on the sheet of printed material 2 detected. For example, when the first transmission module 121 of the first printing unit 12 is transporting at a slower transmission speed than the normal transmission speed, When printing a sheet of material 2, if the color block 21 on the printed material 2 is separated from the edge of the printed material 2 by a second length L2, where the second length L2 is less than the first length L1, the second sensing module 132 drives the second phase motor to adjust the rotational phase θ of the second roller to match the time when the color block 21 on the printed material 2 reaches the second printing module 133. This allows another pattern and another color block 22 to be printed on the printed material 2 at the correct position a second distance D2 from the color block 21, where the second distance D2 is equal to the first distance D1. In actual implementation, the direction of the second roller's rotation and the direction of the rotational phase θ adjusted by the second phase motor can be adjusted as needed.

[0100] As can be seen from the above implementation description, the rotary printing device and method of the present invention have the following advantages compared with the existing technologies and products:

[0101] The rotary printing equipment and method of the present invention mainly rely on the hardware design of the first sensing module and the second sensing module, effectively using the first sensing module to sense the presence of the sheet printing material and change the rotation speed, rotation phase and orientation of the first printing module to print patterns and color blocks on the sheet printing material, and then use the second sensing module to sense the position of the color block to change the rotation speed, rotation phase and orientation of the second printing module, and print another pattern and another color block on the sheet printing material. The main advantages of the present invention are that the corresponding positions of the front and rear patterns and color blocks can be adjusted in real time to print error-free patterns, and the automatic correction function can be used to reduce manual operations to improve the overall printing machine operation rate.

Claims

1. A rotary printing device for printing at least one sheet of printed matter (2), characterized in that: The rotary printing device (1) at least comprises: A paper feeding unit (11) includes a conveying platform (111) for placing and conveying the sheet-like printed matter (2), and a roller module (112) arranged at one end of the conveying platform (111), wherein the roller module (112) conveys the sheet-like printed matter (2) from the conveying platform (111) in a direction away from the conveying platform (111); A first printing unit (12) includes a first transmission module (121) disposed at an end of the roller module (112) away from the transmission platform (111), a first sensing module (122) between the first transmission module (121) and the roller module (112), and a first printing module (123) disposed at an end of the first transmission module (121) and electrically connected to the first sensing module (122). The first transmission module (121) receives the sheet-like printed material (2) transmitted from the roller module (112). When the first sensing module (122) senses the sheet-like printed material (2), the first printing module (123) is driven to print at least one pattern and a color block (21) on the sheet-like printed material (2). as well as A plurality of second printing units (13) are arranged transversely side by side at an end of the first printing unit (12) away from the paper feeding unit (11), each of the second printing units (13) including a second transmission module (131), a second sensing module (132) between the second transmission module (131) and the first printing unit (12), and a second printing module (133) arranged at an end of the second transmission module (131) and electrically connected to the second sensing module (132), the second transmission module (131) receiving the sheet-like printed material (2) transmitted from the first transmission module (121), and the second sensing module (132) sensing the corresponding position of the color block (21) on the sheet-like printed material (2) to adjust the rotation speed of the second printing module (133) and print at least one other pattern and one other color block (22) on the sheet-like printed material (2).

2. The rotary printing device according to claim 1, wherein The sheet-like printed matter (2) is corrugated paper or thick cardboard.

3. The rotary printing apparatus according to claim 1, wherein: The roller module (112) includes two longitudinally arranged rollers (1121). The sheet-like printed material (2) contacts the two rollers (1121) and passes between the two rollers (1121). The two rollers (1121) have different rotation directions to drive the sheet-like printed material (2) to move in a direction away from the conveying platform (111).

4. The rotary printing apparatus according to claim 1, wherein: The first transmission module (121) further includes at least one first transmission wheel (1211), and the sheet-like printed matter (2) is transmitted between the first transmission wheel (1211) and the first printing module (123).

5. The rotary printing apparatus according to claim 1, wherein: The first printing module (123) at least comprises a first roller (1231), a first driving member (1232) for driving the first roller (1231), and a first flexible printing plate (1233) wrapped around the outside of the first roller (1231).

6. The rotary printing apparatus according to claim 5, wherein: The first driving member (1232) at least includes a first phase motor (12321) and a first transverse movement mechanism (12322).

7. The rotary printing apparatus according to claim 5, wherein: The first driving member (1232) at least includes a first power motor (12323) and a first transverse movement mechanism (12322).

8. The rotary printing apparatus according to claim 5, wherein: The first flexible printing plate (1233) has a color for printing the pattern and the color block (21) on the sheet-like printed matter (2).

9. The rotary printing apparatus according to claim 1, wherein: The color block (21) is in the form of a square, a rectangle, a circle, a triangle or a line.

10. The rotary printing apparatus according to claim 1, wherein The first sensing module (122) is a light detection module or an image capture module.

11. The rotary printing apparatus according to claim 5, wherein: The first sensing module (122) drives the first driving member (1232) according to a first time difference between the time when the sheet-like printed matter (2) is detected and a first preset time, so as to change a rotation speed, a rotation phase (θ) and an orientation of the first roller (1231).

12. The rotary printing apparatus according to claim 1, wherein: The second transmission module (131) further includes at least one second transmission wheel (1311), and the sheet-like printed matter (2) is transmitted between the second transmission wheel (1311) and the second printing module (133).

13. The rotary printing apparatus according to claim 1, wherein The second printing module (133) at least comprises a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the outside of the second roller.

14. The rotary printing apparatus according to claim 13, wherein: The second driving component at least includes a second phase motor and a second transverse movement mechanism.

15. The rotary printing apparatus according to claim 13, wherein The second driving component at least includes a second power motor and a second transverse movement mechanism.

16. The rotary printing apparatus according to claim 13, wherein: The second flexographic printing plate has another color for printing the other pattern and the other color block (22) on the sheet-like printed matter (2).

17. The rotary printing apparatus according to claim 1, wherein The other color block (22) is a square, a rectangle, a circle, a triangle or a line.

18. The rotary printing apparatus according to claim 1, wherein The second sensing module (132) is a light detection module or an image capture module.

19. The rotary printing apparatus according to claim 1, wherein The second printing module (133) at least includes a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the outside of the second roller. The second sensing module (132) drives the second driving member of the second printing module (133) based on a second time difference between the time when the color block (21) is detected and a second preset time, so as to change a rotation speed, a rotation phase (θ), and an orientation of the second roller of the second printing module (133).

20. A rotary printing method, characterized in that: The steps include: Step 1 (S1): placing at least one sheet of printed matter (2) on a conveying platform (111) of a paper feeding unit (11), and conveying the sheet of printed matter (2) to a first printing unit (12) via a roller module (112) of the paper feeding unit (11); Step 2 (S2): using a first sensing module (122) of the first printing unit (12) to detect the sheet-like printed matter (2); Step three (S3): using the first sensing module (122) to drive a first printing module (123) of the first printing unit (12) to print at least one pattern and a color block (21) on the sheet-like printed material (2); Step four (S4): using a second sensing module (132) of a second printing unit (13) to detect the color block (21); as well as Step five (S5): using the second sensing module (132) to drive a second printing module (133) of the second printing unit (13) to print at least one other pattern and one other color block (22) on the sheet-like printed material (2).

21. The rotary printing method according to claim 20, wherein: The roller module (112) includes two longitudinally arranged rollers (1121). The sheet-like printed material (2) contacts the two rollers (1121) and passes between the two rollers (1121). The two rollers (1121) have different rotation directions to drive the sheet-like printed material (2) to move in a direction away from the conveying platform (111).

22. The rotary printing method according to claim 20, wherein: The first printing module (123) at least comprises a first roller (1231), a first driving member (1232) for driving the first roller (1231), and a first flexible printing plate (1233) wrapped around the outside of the first roller (1231).

23. The rotary printing method according to claim 22, wherein: The first flexible printing plate (1233) has a color for printing the pattern and the color block (21) on the sheet-like printed matter (2).

24. The rotary printing method according to claim 20, wherein: The first printing module (123) at least comprises a first roller (1231), a first driving member (1232) for driving the first roller (1231), and a first flexible printing plate (1233) wrapped around the outside of the first roller (1231). The first sensing module (122) drives the first driving member (1232) of the first printing module (123) based on a first time difference between a time when the sheet-like printed material (2) is detected and a first preset time, so as to change a rotation speed, a rotation phase, and an orientation of the first roller (1231) of the first printing module (123).

25. The rotary printing method according to claim 20, wherein: The second printing module (133) at least comprises a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the outside of the second roller.

26. The rotary printing method according to claim 25, wherein: The second flexographic printing plate has another color for printing the other pattern and the other color block (22) on the sheet-like printed matter (2).

27. The rotary printing method according to claim 20, wherein: The second printing module (133) at least includes a second roller, a second driving member for driving the second roller, and a second flexible printing plate wrapped around the outside of the second roller. The second sensing module (132) drives the second driving member of the second printing module (133) based on a second time difference between the time when the color block (21) is detected and a second preset time, so as to change a rotation speed, a rotation phase and an orientation of the second roller of the second printing module (133).

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