Double-color double-sided printing machine

Abstract

The invention relates to the technical field of printing, in particular to a double-color double-sided printing machine which comprises a machine body and a page turning roller, the machine body is provided with a printing cavity, a printing plate is arranged in the printing cavity, and a first printing block and a second printing block are movably arranged on the two sides of the printing plate in the printing cavity; the first printing block and the second printing block are each provided with a printing mechanism used for printing, a moving assembly used for driving the first printing block or the second printing block to move is arranged in the printing cavity, the printing cavity is provided with a page turning groove, and the page turning roller is rotationally arranged in the printing cavity and inserted into the page turning groove. A printing cavity is formed in the machine body, a first moving roller and a second moving roller are rotationally arranged in the printing cavity and arranged on the two sides of the printing plate, a driving assembly used for driving the first moving roller or the second moving roller to rotate is arranged in the printing cavity, and the machine body is provided with a rotating assembly used for rotating the page turning roller. The double-color double-sided printing method has the effect of improving the convenience of double-color double-sided printing.

Description

Technical Field

[0001] The invention relates to the technical field of printing, in particular to a two-color double-sided printing machine. Background Art

[0002] Traditional printing technology mostly uses a single-sided monochrome method. With the diversification of market demand and technological advancement, single-sided and two-color single-sided printing machines have gradually appeared on the market. Although these new printing machines have improved printing efficiency and quality, they still cannot meet the needs of some high-end markets for two-color double-sided printing. Two-color double-sided printing not only improves the visual effect of printed products, but also significantly reduces production costs and time, and therefore has important economic and social benefits.

[0003] The most common two-color double-sided printing solution on the market is to use two independent single-color double-sided printing machines to complete the two-color printing on the front and back sides respectively through two consecutive printings. The advantage of this method is that the color matching can be flexibly adjusted, but the movement of paper between the two printings requires manual operation by the staff, which has many steps and is cumbersome and inconvenient to use. Summary of the invention

[0004] In order to improve the convenience of two-color double-sided printing, the present application provides a two-color double-sided printing machine.

[0005] The two-color double-sided printing machine provided in this application adopts the following technical solution: A two-color double-sided printing machine comprises a machine body and a page-turning roller, the machine body is provided with a printing cavity, a printing plate is provided in the printing cavity, a first printing block and a second printing block are movably provided in the printing cavity, a printing mechanism is provided on the first printing block and the second printing block, the printing mechanism is used for printing, the first printing block and the second printing block are arranged on both sides of the printing plate, a moving component is provided in the printing cavity, the moving component is used to drive the first printing block or the second printing block to move, the printing cavity is provided with a page-turning groove, the page-turning roller is rotatably provided in the printing cavity, the page-turning roller is inserted into the page-turning groove and can rotate in the page-turning groove, a first moving roller and a second moving roller are rotatably provided in the printing cavity, the first moving roller and the second moving roller are arranged on both sides of the printing plate, a driving component is provided in the printing cavity, the driving component is used to drive the first moving roller or the second moving roller to rotate, and the machine body is provided with a rotating component, the rotating component is used to drive the page-turning roller to rotate.

[0006] By adopting the above technical solution, the paper to be printed is placed in the printing cavity, and the paper is placed between the printing plate and the first moving roller. The first moving roller is driven to rotate by the driving component, thereby driving the paper forward. When the paper moves below the first printing block, the first printing block is driven to move by the moving component, and the printing mechanism on the first printing block performs inkjet printing on the paper, thereby printing this area of ​​the paper. After that, the driving component is started again to drive the first moving roller to rotate, thereby pushing the paper to move on the printing plate. When the paper moves the width of the printing mechanism of the first printing block, the first moving roller is stopped and the moving component is started again to cooperate with the printing mechanism to print the paper. This is repeated to complete the printing of this side of the paper. During the movement, the paper gradually enters the page turning groove and contacts the page turning roller. At this time, the page turning roller can be driven to rotate by the rotating component, thereby driving the paper to move and turn over in the page turning slot so that the unprinted side faces upward. After the paper is turned over, it will enter between the second moving roller and the bottom wall of the printing cavity. At this time, the second moving roller is driven to rotate by the driving component so that the paper moves forward to the bottom of the second printing block. The second printing block is driven to move by the moving component and the paper is inkjet printed by the printing mechanism during the movement. Thereafter, the second side of the paper is printed repeatedly during the forward movement and gradually moved out of the printing cavity to complete double-sided printing. At the same time, two sets of printing heads can cooperate to facilitate two-color printing, meeting the printing needs of different colors on both sides of the paper in some cases. At the same time, there is no need to move the paper between the two printing machines, thereby simplifying the printing steps and improving the convenience of use.

[0007] Preferably, the moving component includes a moving motor and a moving screw, the moving screw is rotatably arranged in the printing cavity, the moving motor is arranged on the machine body, the moving motor shaft is connected to the moving screw, the moving screw passes through the first printing block or the second printing block, and the moving screw is threadedly connected to the first printing block or the second printing block.

[0008] By adopting the above technical solution, the moving motor is started to drive the moving screw to rotate, thereby driving the first printing block or the second printing block to slide in the printing cavity, so that the printing mechanism can cover the entire width of the paper, and the operation is simple and convenient, and easy to operate and use.

[0009] Preferably, the printing chamber is provided with a moving groove, and the first printing block or the second printing block is provided with a moving block, and the moving block is inserted into the moving groove and can slide in the moving groove.

[0010] By adopting the above technical solution, the moving block moves in the moving groove, thereby limiting the first printing block or the second printing block, thereby improving the stability of the movement of the first printing block or the second printing block, and reducing the possibility of the first printing block or the second printing block tilting during movement, thereby improving the stability of printing and thus improving the printing quality.

[0011] Preferably, the driving assembly includes a first driving gear and a second driving gear, wherein the first driving gear and the second driving gear are both rotatably disposed in the printing cavity and mesh with each other, the second driving gear is connected to the first movable roller or the second movable roller, and a linkage assembly is arranged between the first driving gear and the movable screw rod, and the linkage assembly is used to drive the first driving gear to rotate.

[0012] By adopting the above technical solution, different rotation directions of the movable lead screw drive the first printing block or the second printing block to move back and forth. Through the setting of the linkage component, when the first printing block or the second printing block moves in one of the moving directions, it will drive the first driving gear to rotate, thereby engaging the second driving gear to rotate, thereby driving the first moving roller or the second moving roller to rotate, saving the cost of the driving component, thereby simplifying the operation and improving the convenience of use.

[0013] Preferably, the linkage assembly includes a linkage block, a linkage inner ratchet, a linkage ratchet and a linkage spring, the movable screw rod is provided with a linkage groove, the linkage inner ratchet is arranged in the linkage groove, the linkage block is arranged on the first driving gear and inserted into the linkage groove, the linkage ratchet is rotatably arranged on the linkage block and inserted into the linkage groove, the linkage spring is arranged between the linkage block and the linkage ratchet, and the linkage ratchet can engage and resist with the ratchet teeth on the inner wall of the linkage inner ratchet.

[0014] By adopting the above technical solution, when the moving screw rotates in one direction, the first printing block or the second printing block is driven to move and print through the printing mechanism. At this time, the linkage inner ratchet follows the moving screw to rotate. During the rotation, the inner wall of the linkage inner ratchet presses against the linkage ratchet teeth, and pushes the linkage ratchet teeth to rotate and compress the linkage spring during the rotation, so that the linkage inner ratchet and the linkage block rotate relative to each other, so that the rotation of the moving screw at this time will not drive the linkage block to rotate, and then will not drive the first drive gear or the second drive gear to rotate, so that the paper is relatively stable during the printing process, so as to improve the printing quality. At the same time, when the printing of this section is completed, the first printing block or the second printing block moves in the opposite direction and resets. During this process, the linkage inner ratchet follows the moving screw to rotate in the opposite direction, and during the rotation, the linkage ratchet teeth engage with the linkage inner ratchet, so that the linkage block is driven to rotate during the rotation of the linkage inner ratchet, thereby driving the first drive gear to rotate, thereby driving the first moving roller or the second moving roller by engaging the second drive gear, thereby driving the paper to move while the first printing block or the second printing block is reset, thereby simplifying the operation and improving the convenience of use.

[0015] Preferably, the rotating assembly includes a first rotating gear and a second rotating gear, both of which are rotatably arranged in the printing cavity and connected to the page turning roller, the second driving gear on the first movable roller is meshed with the first rotating gear, and the second driving gear on the second movable roller is meshed with the second rotating gear.

[0016] By adopting the above technical solution, when the first movable roller rotates, the second driving gear engages with the first rotating gear, thereby driving the page turning roller to rotate and driving the paper to turn over. When the second movable roller rotates, the second driving gear engages with the second rotating gear, thereby driving the page turning roller to rotate and driving the paper to turn over. The first movable roller and the second movable roller can both drive the page turning roller to rotate, thereby improving the stability of paper movement. At the same time, with the cooperation of the printing mechanism system software, the mode of printing on both sides of the printing plate can be adjusted in sequence, which is further convenient for use.

[0017] Preferably, the machine body is provided with a controller connected to the moving motor signal, the controller is connected to the printing mechanism signal, the first printing block and the second printing block are both provided with a distance sensor connected to the controller signal, the distance sensor is used to measure the distance between the first printing block or the second printing block and the inner wall of the printing cavity, the first printing block and the second printing block are both provided with a distance sensor connected to the controller signal, the photoelectric sensor is used to detect whether there is paper underneath, the controller is used to control the opening and closing of the moving motor according to the detection result of the distance sensor, and the controller is used to control the opening and closing of the printing mechanism according to the operating state of the moving motor and the detection result of the photoelectric sensor.

[0018] By adopting the above technical solution, during the movement of the first printing block or the second printing block, when it moves close to one side of the printing cavity so that the distance between the inner wall of the printing cavity and the first printing block and the second printing block reaches the set value, the distance sensor detection value is less than the setter at this time, and the controller controls the moving motor to reverse, thereby driving the first printing block and the second printing block to move in the opposite direction and reset. At the same time, if the photoelectric sensor detects paper, the controller controls the operation of the printing mechanism according to the rotation direction of the moving motor shaft and the detection result of the photoelectric sensor, so that the printing mechanism only prints when the first printing block and the second printing block move in the forward direction, and does not print when the first printing block and the second printing block move in the reverse direction and reset. Therefore, the controller is set to facilitate the automatic repeated movement of the first printing block and the second printing block, thereby further simplifying the operation and improving the convenience of use.

[0019] Preferably, heating covers are provided on both sides of the first printing block and the second printing block, and drying heating tubes are provided in the heating covers.

[0020] By adopting the above technical solution, the drying heating tube in the heating hood dries the printed ink, thereby reducing the possibility of the printed ink being smeared due to subsequent paper movement or flipping operations, thereby improving the printing quality.

[0021] Preferably, the machine body is provided with a page turning block inserted into the printing cavity, the page turning groove is provided on the page turning block, the printing plate is provided with a mounting groove, the page turning roller is inserted into the mounting groove and can rotate in the mounting groove, and an installation component is provided between the machine body and the page turning block, and the installation component is used to install the page turning block on the machine body.

[0022] By adopting the above technical solution, the page turning block can be disassembled through the installation component, so that the internal situation of the printing chamber can be seen, thereby facilitating the inspection or replacement of internal parts, and improving the convenience of internal maintenance and replacement of the machine body.

[0023] Preferably, the mounting assembly comprises a mounting block and mounting bolts, wherein the mounting block is arranged on the page turning block and can be abutted against the machine body, and the mounting bolts are used to mount the mounting block on the machine body.

[0024] By adopting the above technical solution, the page turning block is inserted into the printing cavity so that the page turning roller is inserted into the page turning groove. At this time, the mounting block is against the machine body, and the mounting block is installed on the machine body by installing bolts. The installation and disassembly are convenient, which improves the convenience of internal maintenance and replacement of the machine body.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging a machine body, a page turning roller, a printing cavity, a printing plate, a first printing block, a second printing block, a moving component, a page turning slot, a first moving roller, a second moving roller, a driving component and a rotating component, a sheet of paper is inserted into the printing cavity of the machine body, and the first moving roller or the second moving roller on both sides of the printing plate is driven to rotate by the driving component, thereby driving the sheet of paper forward, and the first printing block or the second printing block is driven to move by the moving component, and the sheet of paper is printed by the printing mechanism, and after one side of the sheet of paper is printed, the page turning roller is driven to rotate by the rotating component, so that the sheet of paper entering the page turning slot is turned over and enters another group of printing equipment to realize double-sided printing, and the operation is simple and convenient, and one device can realize double-sided and double-color printing, and there is no need to move the sheet of paper in the middle, which simplifies the operation and improves the convenience of use; 2. By setting a moving motor, a moving screw, a moving block and a moving groove, the moving motor drives the moving screw to rotate in the printing cavity, thereby driving the first printing block or the second printing block to move, and at the same time, the moving block on the first printing block or the second printing block slides in the moving groove on the inner wall of the printing cavity, thereby improving the stability of the movement of the first printing block or the second printing block, so as to reduce the possibility of the first printing block or the second printing block moving crookedly and causing the printed content to be skewed, thereby improving the stability and quality of printing; 3. By setting the page turning block, mounting groove, mounting block and mounting bolts, the page turning block is inserted into the printing cavity so that the page turning roller in the printing cavity is inserted into the page turning groove of the page turning block, and the mounting block against the machine body is installed on the machine body through the mounting bolts to complete the assembly. When problems occur in the internal parts of the machine body and need to be repaired or replaced, unscrew the mounting bolts and take the page turning block out of the printing cavity. At this time, the internal parts of the printing cavity can be disassembled and replaced, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a two-color double-sided printing machine provided in an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view used to show the internal structure of the aircraft.

[0028] Figure 3 It is a cross-sectional view used to show the structure of the moving component.

[0029] Figure 4 It is a cross-sectional view used to reflect the internal structure of the transmission cavity.

[0030] Figure 5 It is a cross-sectional view used to reflect the structure of the linkage components.

[0031] Figure 6 This is a control block diagram of a two-color double-sided printing machine provided in an embodiment of the present application.

[0032] Explanation of reference numerals: 1, machine body; 11, printing cavity; 111, card block; 112, moving groove; 12, slot; 13, through groove; 14, gear cavity; 15, transmission cavity; 16, printing plate; 161, rotating groove; 2, first printing block; 21, second printing block; 22, heating cover; 221, drying heating tube; 23, distance sensor; 24, photoelectric sensor; 25, controller; 26, moving block; 3, first moving roller; 31, second moving roller; 4, page turning block; 41, page turning groove; 42, page turning Roller; 5. Moving assembly; 51. Moving motor; 52. Moving screw rod; 521. Transmission groove; 53. Moving gear set; 6. Driving assembly; 61. First driving gear; 62. Second driving gear; 63. First auxiliary gear; 7. Linkage assembly; 71. Linkage inner ratchet; 72. Linkage block; 73. Linkage ratchet; 74. Linkage spring; 8. Rotating assembly; 81. First rotating gear; 82. Second rotating gear; 83. Second auxiliary gear; 9. Mounting assembly; 91. Mounting block; 92. Mounting bolt. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The present application embodiment discloses a two-color double-sided printing machine. Figures 1 to 4 , which includes a machine body 1 and a page turning block 4, a printing cavity 11 is arranged inside the machine body 1, a slot 12 connected to the printing cavity 11 is arranged on one side of the machine body 1, and two through slots 13 connected to the printing cavity 11 are arranged on the other side of the machine body 1, a circular arc-shaped page turning slot 41 is arranged on the side wall of the page turning block 4, a page turning roller 42 is arranged on the inner wall of the page turning slot 41 to rotate through a rotating shaft, and the page turning block 4 is adapted to pass through the slot 12 and be inserted into the printing cavity 11. A printing plate 16 is fixedly arranged on the inner wall of the printing cavity 11 to divide the printing cavity 11 into two, and a circular arc-shaped mounting groove is arranged on the side wall of the printing plate 16, and the page turning roller 42 is inserted into the mounting groove and can rotate in the mounting groove. An installation component 9 for mounting the page turning block 4 on the machine body 1 is arranged between the machine body 1 and the page turning block 4. The printing chamber 11 is provided with a first printing block 2 and a second printing block 21 which are slidably arranged on both sides of the printing plate 16. The first printing block 2 and the second printing block 21 are both provided with a printing mechanism for printing. The printing mechanism is not shown in the figure and mainly includes an inkjet printing nozzle and a control module. The printing mechanism adopts a high-precision inkjet print head, supports a variety of ink types, and has a resolution of up to 1200dpi. A moving component 5 for driving the first printing block 2 and the second printing block 21 to move is provided in the printing chamber 11. A first moving roller 3 and a second moving roller 31 are respectively rotatably arranged on both sides of the printing plate 16 in the printing chamber 11. The surfaces of the first moving roller 3 and the second moving roller 31 are made of a material with a large friction coefficient to provide sufficient friction to drive the paper forward. Two first moving rollers 3 are provided and located on both sides of the first printing block 2, and two second moving blocks 26 are provided and located on both sides of the second printing block 21. A driving component 6 for driving the first moving roller 3 or the second moving roller 31 to rotate is provided in the printing chamber 11, and a rotating component 8 for driving the page turning roller 42 to rotate is provided on the machine body 1. By using the printing equipment arranged on both sides of the printing plate 16 and cooperating with the page turning roller 42 to turn the paper, double-sided printing can be performed in one machine body 1. The paper movement and turning are performed by the first moving roller 3 or the second moving roller 31 and the page turning roller 42 respectively, without manual movement, simplifying the operation and improving the convenience of use.

[0035] To facilitate the handling of flip jams, refer to Figure 2 The mounting assembly 9 includes a mounting block 91 and a plurality of mounting bolts 92. The mounting block 91 is fixedly arranged on the side walls of both sides of the page turning block 4 and abuts against the machine body 1. The mounting bolts 92 are used to mount the mounting block 91 on the machine body 1. The mounting and disassembly by the mounting bolts 92 improves the convenience of mounting and disassembly of the page turning block 4. After disassembling the page turning block 4, it is convenient to deal with the situation of paper jam at the page turning roller 42, and it is also convenient to disassemble the parts inside the printing cavity 11.

[0036] For ease of use, refer to Figure 2 and Figure 3The moving assembly 5 includes a moving motor 51, a moving gear set 53 and a pair of moving screw rods 52. The moving motor 51 is fixedly arranged on the outer wall of the machine body 1. The machine body 1 is provided with a gear cavity 14 on the side of the printing cavity 11 close to the moving motor 51. The gears in the moving gear set 53 are rotatably arranged in the gear cavity 14. There are three gears in the moving gear set 53 and the gears are arranged in sequence and mesh with each other. The rotating shaft of the moving motor 51 is inserted into the gear cavity 14 and is coaxially fixedly connected to the gear in the middle of the moving gear set 53. The moving screw rods 52 are all rotatably arranged in the printing cavity 11 and located on both sides of the printing plate 16. The moving screw rods 52 are all inserted into the gear cavity 14 and are coaxially fixedly connected to the gears located on both sides of the moving gear set 53. The moving screw rods 52 pass through the first printing block 2 and the second printing block 21 respectively and are threadedly connected to the first printing block 2 or the second printing block 21. The top wall of the printing cavity 11 and the bottom wall of the printing plate 16 are fixedly provided with a block 111, which is arranged on both sides of the first printing block 2 or the second printing block 21. The side wall of the block 111 is provided with a moving groove 112. The side walls of the first printing block 2 and the second printing block 21 are fixed with a moving block 26, which is adapted to be inserted into the moving groove 112 and can slide in the moving groove 112. The two groups of moving screw rods 52 are synchronously driven to rotate by the moving motor 51 under the transmission of the moving gear group 53, thereby driving the first printing block 2 and the second printing block 21 to move, and the operation is simple and convenient.

[0037] To improve the convenience of use, refer to Figure 3 and Figure 6 The machine body 1 is provided with a controller 25 connected to the mobile motor 51 and the printing mechanism by signal. The top walls of the first printing block 2 and the second printing block 21 are fixedly provided with distance sensors 23 for measuring the distance between the inner walls on both sides of the printing cavity 11. The distance sensors 23 are connected to the controller 25 by signal. The controller 25 is used to control the opening and closing of the mobile motor 51 according to the detection result of the distance sensor 23. The bottom walls of the first printing block 2 and the second printing block 21 are provided with photoelectric sensors 24 connected to the controller 25 by signal to detect whether there is paper in the first printing block 2 or the second printing block 21 waiting for printing. The controller 25 is used to control the opening and closing of the printing mechanism according to the running state of the mobile motor 51 and the detection result of the photoelectric sensor 24. A heating cover 22 is fixedly provided at each end of the first printing block 2 and the second printing block 21. The bottom wall of the heating cover 22 is opened. A drying heating pipe 221 connected to the controller 25 by signal is fixedly provided in the heating cover 22. The drying heating pipe 221 adopts an infrared heating pipe with an adjustable temperature range of 80-120°C to ensure fast and uniform drying. The controller 25 is combined with the distance sensor 23 to control the operating state of the moving motor 51, and the printing mechanism and the drying heating tube 221 are controlled according to the operating state of the moving motor 51, thereby reducing the operation steps and improving the convenience of use.

[0038] To save costs, refer to Figures 3 to 5 The driving assembly 6 includes a first driving gear 61, a second driving gear 62 and a plurality of first auxiliary gears 63. The machine body 1 is provided with a transmission chamber 15 on the side of the printing chamber 11 away from the gear chamber 14. The first auxiliary gear 63, the first driving gear 61 and the second driving gear 62 are all rotatably arranged in the transmission chamber 15. The first auxiliary gears 63 are arranged in sequence and mesh with each other. The first auxiliary gears 63 located at both ends are meshed with the first driving gear 61 and the second driving gear 62 respectively. The second driving gear 62 is connected to the first moving roller 3 or the second moving roller 31. A linkage assembly 7 for driving the first driving gear 61 to rotate is provided between the first driving gear 61 and the moving screw 52. With the help of the linkage assembly 7, the first driving gear 61 is driven to rotate by the rotation of the moving screw 52, ​​so that the first moving roller 3 and the second moving roller 31 are driven to rotate by the meshing of the second driving gear 62, so that it is convenient to use and saves the cost of the driving parts.

[0039] To improve the stability of printing, refer to Figures 3 to 5 The linkage assembly 7 includes a linkage block 72, a linkage inner ratchet 71, a linkage ratchet 73 and a linkage spring 74. A circular linkage groove is provided at one end of the moving screw 52 away from the moving motor 51, and the linkage inner ratchet 71 is fixedly arranged on the inner wall of the linkage groove. The linkage block 72 is circular and fixedly arranged on the side wall of the first driving gear 61 close to the moving screw 52. The linkage block 72 is inserted into the linkage groove and the middle through hole of the linkage inner ratchet 71. The linkage gear can rotate in the middle through hole of the linkage inner ratchet 71. One end of the linkage ratchet 73 is rotatably arranged on the linkage block 72 through a rotating shaft, and the other end of the linkage ratchet 73 is elastically connected to the side wall of the linkage block 72 through a linkage spring 74. The linkage ratchet 73 is located in the middle through hole of the linkage inner ratchet 71 and can mesh with the linkage inner ratchet 71. In another embodiment, the rotating shafts of the first moving roller 3, the second moving roller 31 and the page turning roller 42 can be provided with friction plates to increase friction, thereby reducing the possibility of paper displacement and affecting the printing effect due to continuous rotation due to inertia when it should not rotate. One-way transmission is achieved through a ratchet mechanism, that is, when the moving screw 52 rotates in one direction, the first driving gear 61 can be driven to rotate through the ratchet structure, thereby driving the first moving roller 3 and the second moving roller 31 to rotate, and when the moving screw 52 rotates in the other direction, the first driving gear 61 will not be driven to rotate through the ratchet structure, so that the first moving roller 3 and the second moving roller 31 remain stationary, thereby reducing the possibility of paper movement during printing and improving the stability of paper printing.

[0040] For ease of use, refer to Figure 3 and Figure 4The rotating assembly 8 includes a first rotating gear 81, a second rotating gear 82 and a plurality of second auxiliary gears 83. The first rotating gear 81, the second rotating gear 82 and the second auxiliary gear 83 are all rotatably arranged in the gear cavity 14. The first rotating gear 81 and the second rotating gear 82 are both coaxially fixedly connected to the page turning roller 42. The second auxiliary gears 83 are divided into two groups. Each group of second auxiliary gears 83 is arranged in sequence and meshes with each other. One group of second auxiliary gears 83 is arranged between the second driving gear 62 on the first moving roller 3 and the first rotating gear 81. The second auxiliary gears 83 located at both ends mesh with the first rotating gear 81 and the second driving gear 62 on the first moving roller 3, respectively. The other group of second auxiliary gears 83 is arranged between the second driving gear 62 on the second moving roller 31 and the second rotating gear 82. The second auxiliary gears 83 located at both ends mesh with the second rotating gear 82 and the second driving gear 62 on the second moving roller 31, respectively. In another embodiment, in order to improve the flexibility of double-sided printing, two mobile motors 51 can be set to drive the two mobile screws 52 to rotate respectively. At the same time, a linkage assembly 7 is set between the page turning roller 42 and the first rotating gear 81 and between the page turning roller 42 and the second rotating gear 82. The one-way transmission characteristics of the ratchet structure reduce the possibility that the rotation of the page turning roller 42 affects the printing of the printing equipment on both sides of the printing plate 16, so that the printing equipment on both sides of the printing plate 16 can print independently, thereby improving the flexibility of use. Through the transmission of the rotating assembly 8, when the first mobile roller 3 or the second mobile roller 31 rotates, it can drive the page turning roller 42 to rotate to turn the page, thereby improving the convenience of use. In another embodiment, the page turning roller 42 can also be rotated by a pneumatically driven rotating assembly, with a turning speed of ≤0.5 seconds and an accuracy of ±0.1mm to achieve more accurate page turning.

[0041] The implementation principle of a two-color double-sided printing machine in the embodiment of the present application is as follows: the paper to be printed is placed in the printing cavity 11 through the slot 13 and inserted into the gap between the first moving roller 3 and the printing plate 16, the moving motor 51 is started, and the moving screw 52 is driven to rotate through the moving gear set 53 and the transmission, thereby driving the first printing block 2 to move to one side, and the controller 25 controls the printing mechanism on the first printing block 2 to print according to the detection structure of the photoelectric sensor 24 and the state of the moving motor 51, and controls the drying heating tube 221 to dry the printed ink, thereby completing the printing of a section of the paper, and then the first printing block 2 moves to one side of the printing cavity 11, the distance When the detection value of sensor 23 is less than the set value, controller 25 controls the moving motor 51 to rotate in the reverse direction, driving the first printing block 2 to move in the reverse direction and reset. In this process, controller 25 controls the printing mechanism not to print, and at the same time drives the first driving gear 61 to rotate through the one-way transmission of the ratchet structure of linkage assembly 7, thereby driving the first moving roller 3 to rotate under the action of gear meshing, and driving the page turning roller 42 to rotate through the rotating assembly 8, driving the paper to move forward, and the paper moving distance is consistent with the printing width. Then, according to the detection value of distance sensor 23, controller 25 controls the moving motor 51 to reverse, thereby repeating the printing steps, thereby completing the printing of one side of the paper back and forth. In the process of printing one side of the paper, the paper enters the page turning slot 41 and is turned over by the page turning roller 42 to enter the bottom of the second printing block 21. Under continuous advancement, the paper repeats the printing operation under the second printing block 21, thereby realizing double-sided printing, and the two sets of printing mechanisms are independent of each other, and can realize two-color printing to meet the needs of different colors on both sides of the paper. The overall process does not require manual operation to move the paper, simplifying the operation steps, thereby improving printing efficiency.

[0042] Furthermore, different modes can be set through program control in the controller 25, so that the printing structures on both sides of the printing plate 16 can be set to first-side printing, which is convenient for debugging according to actual usage conditions.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A two-color double-sided printing machine, characterized in that: The invention comprises a machine body (1) and a page turning roller (42), wherein the machine body (1) is provided with a printing cavity (11), wherein a printing plate (16) is provided in the printing cavity (11), wherein a first printing block (2) and a second printing block (21) are movably provided in the printing cavity (11), wherein the first printing block (2) and the second printing block (21) are both provided with a printing mechanism, wherein the printing mechanism is used for printing, wherein the first printing block (2) and the second printing block (21) are provided on both sides of the printing plate (16), wherein a moving component (5) is provided in the printing cavity (11), wherein the moving component (5) is used for driving the first printing block (2) or the second printing block (21) to move, wherein the printing cavity (11) A page turning groove (41) is provided, and the page turning roller (42) is rotatably arranged in the printing cavity (11). The page turning roller (42) is inserted into the page turning groove (41) and can rotate in the page turning groove (41). A first moving roller (3) and a second moving roller (31) are rotatably arranged in the printing cavity (11). The first moving roller (3) and the second moving roller (31) are arranged on both sides of the printing plate (16). A driving component (6) is provided in the printing cavity (11). The driving component (6) is used to drive the first moving roller (3) or the second moving roller (31) to rotate. The machine body (1) is provided with a rotating component (8). The rotating component (8) is used to drive the page turning roller (42) to rotate.

2. A two-color double-sided printing machine according to claim 1, characterized in that: The moving assembly (5) comprises a moving motor (51) and a moving screw (52); the moving screw (52) is rotatably arranged in the printing chamber (11); the moving motor (51) is arranged on the machine body (1); the rotating shaft of the moving motor (51) is connected to the moving screw (52); the moving screw (52) passes through the first printing block (2) or the second printing block (21); and the moving screw (52) is threadedly connected to the first printing block (2) or the second printing block (21).

3. A two-color double-sided printing machine according to claim 2, characterized in that: The printing chamber (11) is provided with a moving groove (112), and the first printing block (2) or the second printing block (21) is provided with a moving block (26), wherein the moving block (26) is inserted into the moving groove (112) and can slide in the moving groove (112).

4. A two-color double-sided printing machine according to claim 2, characterized in that: The driving assembly (6) comprises a first driving gear (61) and a second driving gear (62); the first driving gear (61) and the second driving gear (62) are both rotatably disposed in the printing chamber (11) and meshed with each other; the second driving gear (62) is connected to the first moving roller (3) or the second moving roller (31); a linkage assembly (7) is disposed between the first driving gear (61) and the moving screw rod (52); the linkage assembly (7) is used to drive the first driving gear (61) to rotate.

5. A two-color double-sided printing machine according to claim 4, characterized in that: The linkage assembly (7) comprises a linkage block (72), a linkage inner ratchet (71), a linkage ratchet tooth (73) and a linkage spring (74); the movable screw rod (52) is provided with a linkage groove; the linkage inner ratchet (71) is arranged in the linkage groove; the linkage block (72) is arranged on the first driving gear (61) and inserted into the linkage groove; the linkage ratchet tooth (73) is rotatably arranged on the linkage block (72) and inserted into the linkage groove; the linkage spring (74) is arranged between the linkage block (72) and the linkage ratchet tooth (73); and the linkage ratchet tooth (73) can be meshed with and abutted against the ratchet tooth on the inner wall of the linkage inner ratchet (71).

6. A two-color double-sided printing machine according to claim 5, characterized in that: The rotating assembly (8) comprises a first rotating gear (81) and a second rotating gear (82), wherein the first rotating gear (81) and the second rotating gear (82) are both rotatably arranged in the printing chamber (11) and connected to the page turning roller (42), the second driving gear (62) on the first moving roller (3) is meshed with the first rotating gear (81), and the second driving gear (62) on the second moving roller (31) is meshed with the second rotating gear (82).

7. A two-color double-sided printing machine according to claim 2, characterized in that: The machine body (1) is provided with a controller (25) connected to the signal of the moving motor (51), and the controller (25) is connected to the signal of the printing mechanism. The first printing block (2) and the second printing block (21) are both provided with a distance sensor (23) connected to the signal of the controller (25), and the distance sensor (23) is used to measure the distance between the first printing block (2) or the second printing block (21) and the inner wall of the printing chamber (11). The first printing block (2) and the second printing block (21) are both provided with a photoelectric sensor (24) connected to the signal of the controller (25), and the photoelectric sensor (24) is used to detect whether there is paper underneath. The controller (25) is used to control the opening and closing of the moving motor (51) according to the detection result of the distance sensor (23), and the controller (25) is used to control the opening and closing of the printing mechanism according to the running state of the moving motor (51) and the detection result of the photoelectric sensor (24).

8. A two-color double-sided printing machine according to claim 1, characterized in that: Heating covers (22) are provided on both sides of the first printing block (2) and the second printing block (21), and drying heating tubes (221) are provided inside the heating covers (22).

9. A two-color double-sided printing machine according to claim 1, characterized in that: The machine body (1) is provided with a page turning block (4) inserted into a printing cavity (11); the page turning groove (41) is provided on the page turning block (4); the printing plate (16) is provided with a mounting groove; the page turning roller (42) is inserted into the mounting groove and can rotate in the mounting groove; a mounting assembly (9) is provided between the machine body (1) and the page turning block (4); the mounting assembly (9) is used to mount the page turning block (4) on the machine body (1).

10. A two-color double-sided printing machine according to claim 9, characterized in that: The mounting assembly (9) comprises a mounting block (91) and a mounting bolt (92); the mounting block (91) is arranged on the page turning block (4) and can abut against the machine body (1); and the mounting bolt (92) is used to mount the mounting block (91) on the machine body (1).

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