Environmentally friendly gravure printing decorative paper color printing equipment

Abstract

The present application relates to an environmentally friendly gravure printing device for color printing of decorative paper, and to the technical field of decorative paper, including a machine body, a printing roller and a conveying roller. A drying device is arranged on the machine body, and the drying device includes: a drying box arranged on the machine body; two preheating plates arranged in the drying box and used to dry the decorative paper; two air outlet plates arranged in the drying box and used to output hot air; two air suction plates arranged in the drying box and used to absorb the heat on the decorative paper; a control mechanism arranged on the drying box and used to control the flow of air. The present application dries and preliminarily shapes the decorative paper through the preheating plate, and then blows hot air to dry it, thereby improving the quality of the decorative paper and also improving the production efficiency of the decorative paper; at the same time, the decorative paper is cooled before being output from the drying box, thereby reducing the probability of heat loss causing thermal pollution to the environment, and at the same time, heat recovery also achieves energy saving and environmental protection.

Description

Technical Field

[0001] The present application relates to the technical field of decorative paper production, and in particular to an environmentally friendly gravure printing decorative paper color printing device. Background Art

[0002] At present, decorative paper is a material used to decorate and beautify indoor walls and ceilings. Usually, wallpaper can produce expressive patterns on its surface through processes such as lamination, embossing, and gravure printing, which can meet diverse individual aesthetic requirements and fashion needs. The gravure printing machine is a commonly used color printing equipment in the production process of decorative paper.

[0003] The decorative paper is printed on the printing plate cylinder when passing through the printing equipment. After printing, the wallpaper needs to be transported to the outside. During this process, the ink on the surface of the wallpaper has not completely dried. When it is transmitted through the transmission roller, the pattern on its surface may be destroyed by the transmission roller, reducing the quality of the decorative paper. Summary of the invention

[0004] In order to improve the quality of decorative paper, the present application provides an environmentally friendly gravure printing decorative paper color printing device.

[0005] The environmentally friendly gravure decorative paper color printing equipment provided in this application adopts the following technical solutions:

[0006] An environmentally friendly gravure printing decorative paper color printing device comprises a machine body, a printing roller and a conveying roller rotatably arranged on the machine body, and a drying device is arranged on the machine body, and the drying device comprises:

[0007] A drying box, which is arranged on the machine body and located between the printing roller and the conveying roller;

[0008] Two preheating plates, which are arranged in the drying box and are used to dry both sides of the decorative paper;

[0009] Two air outlet plates, which are arranged in the drying box and located on both sides of the decorative paper and are used to output hot air;

[0010] Two suction plates, which are arranged in the drying box and located on both sides of the decorative paper and are used to absorb heat from the decorative paper, so that the decorative paper passing through the printing roller passes through the preheating plate, the air outlet plate, the suction plate and the conveying roller in sequence;

[0011] The control mechanism is arranged on the drying box and connected with the air outlet plate and the air suction plate and is used to control the flow of air.

[0012] By adopting the above technical solution, the decorative paper is printed by the printing roller, and then the decorative paper enters the drying box, and then the decorative paper passes through two preheating plates, two air outlet plates, and two air suction plates in sequence, and then the decorative paper passes out of the drying box and moves to the conveying roller. The rotation of the printing roller and the conveying roller drives the decorative paper to move, so the preheating plate first dries the decorative paper, so as to achieve the preliminary shaping of the printed pattern of the decorative paper, and then the control mechanism is started, and the hot air is blown out through the air outlet plate to continue drying the decorative paper, and then the air suction plate absorbs the heat on the decorative paper to achieve cooling;

[0013] Because the drying effect of hot air on decorative paper is better than that of preheating plate, but hot air blowing on undried decorative paper can easily make the pattern on the decorative paper chaotic and reduce the quality of the decorative paper. Therefore, the decorative paper is first dried and initially shaped on the preheating plate, and then dried with hot air, so as to improve the quality of the decorative paper and also improve the production efficiency of the decorative paper; at the same time, the decorative paper is cooled before being output from the drying box, thereby reducing the probability of heat loss causing thermal pollution to the environment, and heat recovery also achieves energy saving and environmental protection.

[0014] Optionally, the control mechanism includes:

[0015] A control box, wherein the control box is arranged on the drying box;

[0016] A heating tube, wherein the heating tube is arranged on the control box;

[0017] A control air pump, wherein the control air pump is arranged on the control box and connected to the air outlet plate;

[0018] An air suction pipe, which is arranged on the control box and connected to the air suction plate;

[0019] A filter assembly is arranged on the control box and is used for filtering the air entering the control box through the air suction pipe.

[0020] By adopting the above technical solution, the control air pump is started, and the heat on the decorative paper enters the filter component through the suction pipe for filtration, and then the heat and air enter the control box, and then the air is heated by the heating pipe, and then the hot air is blown to the decorative paper through the air outlet plate for drying, so as to realize heat recovery. At the same time, under the action of the control air pump, the heat used by the preheating plate to heat the decorative paper is also recycled through the suction pipe, which reduces the probability of heat dissipating into the air and causing thermal pollution, and also achieves energy saving and environmental protection. In addition, filtering through the filter component reduces the clogging of the control air pump by impurities, and increases the life of the control air pump. At the same time, it also reduces the probability of impurities moving to the decorative paper with the hot air, and improves the quality of the decorative paper.

[0021] Optionally, a sliding hole is provided on the control box, and the filter assembly includes:

[0022] A filter frame, wherein the filter frame is slidably disposed on the sliding hole and is used for filtering air;

[0023] The mounting plate is arranged on the filter frame and abuts against the control box for positioning.

[0024] By adopting the above technical solution, impurities are moved into the filter frame for filtering, the filter frame is removed by pulling the mounting plate for cleaning, and then the filter frame is slidably installed on the sliding hole, and the mounting plate is pushed to contact the control box for positioning, thereby realizing the cleaning of the filter frame and improving the effect of removing impurities.

[0025] Optionally, the control box is provided with a limiting component for limiting the mounting plate, and the limiting component includes:

[0026] A limit block, which is arranged on the control box and has a limit slot;

[0027] The rotating rod is rotatably arranged on the mounting plate and is clamped and mounted on the limiting groove for positioning.

[0028] By adopting the above technical solution, the rotating rod is rotated to disengage from the limiting groove, and then the filter frame can be removed. After the filter frame is installed, the rotating rod is rotated to snap-fit ​​onto the limiting groove, thereby positioning the filter frame and improving the stability of the filter frame.

[0029] Optionally, the distances between the two air outlet plates and the two air suction plates and the decorative paper are equal, the air outlet volume of the air outlet plate located below the decorative paper is greater than the air outlet volume of the other air outlet plate and is used to blow support to the decorative paper and keep the decorative paper level.

[0030] By adopting the above technical solution, the distances between the air outlet plate and the air intake plate and the decorative paper are equal, and the air outlet plate located at the bottom has a larger air volume, so that the decorative paper remains horizontal, thereby reducing the probability of the decorative paper sagging and wrinkling due to gravity, thereby improving the quality of the decorative paper.

[0031] Optionally, a cleaning mechanism for cleaning the decorative paper is provided on the machine body, and the cleaning mechanism comprises:

[0032] Two guide rollers, which are rotatably arranged on the machine body and located on both sides of the decorative paper and are used to drive the decorative paper to move;

[0033] Two fixed rollers, which are arranged on the machine body and located on both sides of the decorative paper and have a plurality of fixing holes around the axes of the fixed rollers;

[0034] Two cleaning rollers, the two cleaning rollers are rotatably arranged on the two fixed rollers respectively and are provided with a plurality of cleaning holes blowing toward the decorative paper in a circumferential array, so that the decorative paper passes between the two cleaning rollers and maintains a gap between the two cleaning rollers, and the cleaning holes and the fixed holes can be connected when the two cleaning rollers rotate;

[0035] A connecting assembly, wherein the connecting assembly is arranged on the guide roller and connected to the cleaning roller;

[0036] An air supply component, which is arranged on the machine body and communicated with the fixing hole and is used to provide gas;

[0037] A positioning assembly is arranged on the machine body and is used to position the fixed roller and to misalign the fixing hole and the cleaning hole.

[0038] By adopting the above technical solution, the guide roller rotates to drive the decorative paper to pass through the two cleaning rollers and then move to the printing roller for printing. The guide roller rotates to drive the cleaning roller to rotate through the connecting component, and the air supply component provides gas to enter the fixed hole. When the fixed hole is connected with the cleaning hole during the rotation of the cleaning roller, the gas is blown to the decorative paper through the cleaning hole, so as to clean the impurities on the decorative paper; when the decorative paper stops and the guide roller stops rotating, the cleaning roller stops rotating, and the positioning component starts to position the cleaning roller, so that the fixed hole and the cleaning hole are misaligned, so as to automatically close the cleaning hole when there is no need to clean the decorative paper, thereby cleaning the decorative paper and reducing the waste of gas energy; and the decorative paper passes between the two cleaning rollers and does not contact the cleaning roller, thereby further improving the cleaning effect of the impurities on the decorative paper and improving the quality of the decorative paper.

[0039] Optionally, the connection component includes:

[0040] a first gear and a second gear, wherein the first gear and the second gear are respectively arranged on the guide roller and the cleaning roller;

[0041] A connecting gear is rotatably disposed on the machine body and meshes with both the first gear and the second gear.

[0042] By adopting the above technical solution, the rotation of the guide roller drives the first gear to rotate, and the rotation of the first gear drives the connecting gear to rotate, and the rotation of the connecting gear drives the second gear and the cleaning roller to rotate, thereby achieving the same direction rotation of the cleaning roller driven by the rotation of the guide roller.

[0043] Optionally, the air supply assembly includes:

[0044] An air supply box, which is arranged on the machine body and is provided with an air supply pipe communicating with the fixing hole;

[0045] An air supply pump, the air supply pump is arranged on the air supply box and is connected to the air supply box;

[0046] An air pressure detector is arranged on the air supply box and is used to detect the gas pressure in the air supply box and is electrically connected to the air supply pump.

[0047] By adopting the above technical scheme, the air pressure detector detects the gas pressure in the air supply box. When the air pressure is lower than the specified value, the air supply pump starts to input gas into the air supply box, so that the air pressure in the air supply box remains stable, and the air pressure output through the cleaning hole remains stable, thereby improving the cleaning effect of impurities on the decorative paper and improving the quality of the decorative paper.

[0048] Optionally, the positioning component includes:

[0049] A positioning plate, the positioning plate is arranged on the cleaning roller and has a plurality of positioning grooves arranged in a circumferential array around the axis of the cleaning roller;

[0050] A positioning rod, the positioning rod being slidably arranged on the machine body;

[0051] A spring is arranged on the machine body and connected to the positioning rod so that the positioning rod is plugged into the positioning groove for positioning. After the cleaning roller stops rotating, the positioning rod is plugged into the positioning groove for positioning under the action of the spring, and the fixing hole and the cleaning hole are misaligned and not connected.

[0052] By adopting the above technical solution, the rotation of the cleaning roller drives the positioning plate to rotate, and the rotation of the positioning plate squeezes the positioning rod to disengage from the positioning groove. After the cleaning roller stops rotating, the positioning rod is inserted and installed into the positioning groove under the action of the spring for positioning, so that the fixing hole and the cleaning hole are misaligned, thereby realizing the positioning of the cleaning roller and sealing the cleaning hole.

[0053] Optionally, the cleaning holes are provided in two groups and the ends away from the cleaning roller are inclined toward the ends close to the cleaning roller.

[0054] By adopting the above technical solution, the effect of removing impurities on the decorative paper is further improved, and the quality of the decorative paper is improved.

[0055] In summary, the present application includes at least one of the following beneficial technical effects:

[0056] The decorative paper is dried and initially shaped on the preheating plate, and then dried with hot air, thereby improving the quality of the decorative paper and also improving the production efficiency of the decorative paper; at the same time, the decorative paper is cooled before being output from the drying box, thereby reducing the probability of heat loss causing thermal pollution to the environment, and heat recovery also achieves energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0058] Figure 2 It is a schematic diagram of the structure of the fixed roller, the cleaning roller and the air supply assembly in the present application;

[0059] Figure 3 It is a schematic diagram of the structure of the connection component and the positioning component in this application;

[0060] Figure 4 is a schematic diagram of the structure of the drying device in the present application, wherein the side wall of the drying box is cut away;

[0061] Figure 5 It is a schematic diagram of the structure of the control mechanism and the limit assembly in the present application, in which the side wall of the control box is cut away.

[0062] Figure numerals: 1, machine body; 11, printing roller; 12, conveying roller; 2, cleaning mechanism; 21, guide roller; 22, fixed roller; 23, cleaning roller; 24, fixed cavity; 25, fixed hole; 26, cleaning hole; 3, connecting assembly; 31, first gear; 32, second gear; 33, connecting gear; 4, air supply assembly; 41, air supply box; 42, air supply pump; 43, air pressure detector; 44, air supply pipe; 5, positioning assembly; 51, positioning plate; 52, fixed Position rod; 53. spring; 54. positioning slot; 6. drying device; 61. drying box; 62. preheating plate; 63. air outlet plate; 64. air suction plate; 65. input port; 66. output port; 7. control mechanism; 71. control box; 72. heating pipe; 73. control air pump; 731. air outlet pipe; 74. air suction pipe; 75. filter assembly; 76. filter frame; 77. mounting plate; 8. limit assembly; 81. limit block; 82. rotating rod; 83. limit slot. DETAILED DESCRIPTION

[0063] The following is combined with Figure 1-5 This application is further described in detail.

[0064] The embodiment of the present application discloses an environmentally friendly gravure printing decorative paper color printing device.

[0065] Reference Figure 1 The environmentally friendly gravure decorative paper color printing equipment includes a body 1, a printing roller 11 and a conveying roller 12 horizontally rotatably mounted on the body 1, and a drying device 6 for drying the decorative paper and a cleaning mechanism 2 for cleaning the decorative paper are arranged on the body 1. The cleaning mechanism 2, the printing roller 11, the drying device 6 and the conveying roller 12 are arranged at intervals perpendicular to the axis of the printing roller 11, so that the decorative paper passes through the cleaning mechanism 2, the printing roller 11, the drying device 6 and the conveying roller 12 in sequence.

[0066] Reference Figure 1The cleaning mechanism 2 includes two guide rollers 21, two fixed rollers 22, and two cleaning rollers 23. The two guide rollers 21 are horizontally rotatably mounted on the machine body 1, and the two fixed rollers 22 are fixedly mounted on the machine body 1 and are located between the guide rollers 21 and the printing roller 11. The fixed roller 22 is located on the side of the guide roller 21 close to the printing roller 11; the two guide rollers 21 and the two fixed rollers 22 are vertically spaced, and the two guide rollers 21 are pressed against the decorative paper and are used to drive the decorative paper to move. At the same time, the axes of the guide rollers 21, the fixed rollers 22 and the printing roller 11 are parallel. , and two printing rollers 11 and conveying rollers 12 are vertically spaced apart and their axes are parallel, two guide motors respectively connected to the guide rollers 21 are fixedly installed on the machine body 1, and two printing motors and two conveying motors are fixedly installed on the machine body 1, and the output shafts of the two printing motors are respectively connected to the two printing rollers 11, and the output shafts of the two conveying motors are respectively connected to the two conveying rollers 12, the guide motor, the printing motor and the conveying motor are started at the same time, so that the guide rollers 21, the printing rollers 11 and the conveying rollers 12 rotate at the same time to drive the decorative paper to move.

[0067] Reference Figure 1 and Figure 2 A fixing cavity 24 is provided in the fixing roller 22, and a plurality of fixing holes 25 connected with the fixing cavity 24 are arranged on the outer wall of the fixing roller 22 around the axis of the fixing roller 22 and in a radial array; the cleaning roller 23 is coaxially rotatably sleeved on the outer wall of the fixing roller 22, and a plurality of cleaning holes 26 are provided on the outer wall of the cleaning roller 23 around the axis of the cleaning roller 23 and in a radial direction, and the plurality of cleaning holes 26 and the plurality of fixing holes 25 are arranged one by one, and when the decorative paper passes between the two cleaning rollers 23, both the upper and lower surfaces of the decorative paper maintain a gap with the two cleaning rollers 23; when the cleaning roller 23 rotates, the cleaning holes 26 and the fixing holes 25 can be connected, and two groups of cleaning holes 26 are arranged, and the two groups of cleaning holes 26 are arranged in a mirror image about the perpendicular midline of the line connecting the two end points of the cleaning roller 23, and the cleaning holes 26 are in an inclined state, and the ends of the two groups of cleaning holes 26 away from the axis of the cleaning roller 23 are inclined toward the two ends of the cleaning roller 23, and the gas is blown out through the cleaning holes 26, so that impurities on the decorative paper are easier to fall off.

[0068] Reference Figure 1 and Figure 3The cleaning mechanism 2 also includes a connecting component 3, an air supply component 4 and a positioning component 5. The connecting component 3 is arranged on the guide roller 21 and connected to the cleaning roller 23. The connecting component 3 includes a first gear 31, a second gear 32 and a connecting gear 33. The first gear 31 is key-connected to the guide roller 21, and the second gear 32 is key-connected to the cleaning roller 23. The connecting gear 33 is rotatably mounted on the body 1, and the connecting gear 33 is located between the first gear 31 and the second gear 32 and meshes with the first gear 31 and the second gear 32; the rotation of the guide roller 21 drives the first gear 31 to rotate, the rotation of the first gear 31 drives the connecting gear 33 to rotate, and the rotation of the connecting gear 33 drives the second gear 32 and the cleaning roller 23 to rotate.

[0069] Reference Figure 1 and Figure 2 The air supply component 4 is arranged on the body 1 and is connected to the fixed hole 25 and is used to provide gas. The air supply component 4 includes an air supply box 41, an air supply pump 42 and an air pressure detector 43. The air supply box 41 is fixedly installed on the side wall of the body 1 and is located on the side of the fixed roller 22. At the same time, the air supply box 41 is filled with gas, and an air supply pipe 44 that passes through the fixed roller 22 and extends into the fixed cavity 24 is fixedly installed on the air supply box 41; the air supply pump 42 is fixedly installed on the side wall of the air supply box 41, and the air supply pump 42 is connected to the air supply The air supply box 41 is connected, and a control box for controlling the start and stop of the air supply pump 42 is fixedly installed on the air supply box 41; an air pressure detector 43 is fixedly installed on the side wall of the air supply box 41, and the detection element of the air pressure detector 43 extends into the air supply box 41 and is used to detect the gas pressure in the air supply box 41; the air pressure detector 43 is used to detect the air pressure in the air supply box 41. When the air pressure is lower than the specified value, the air supply pump 42 starts to add gas to the air supply box 41, so that the gas in the air supply box 41 maintains a stable pressure.

[0070] Reference Figure 1 and Figure 2 The gas in the air supply box 41 enters the fixed cavity 24 through the air supply pipe 44, and the cleaning roller 23 rotates to connect the fixed hole 25 and the cleaning hole 26. The gas is blown toward the upper and lower surfaces of the decorative paper through the fixed cavity 24, the fixed hole 25 and the cleaning hole 26, so that impurities on the decorative paper fall off, thereby cleaning the impurities on the upper and lower surfaces of the decorative paper.

[0071] Reference Figure 1 and Figure 3, the positioning assembly 5 is arranged on the body 1, and the positioning assembly 5 is used to position the cleaning roller 23. At the same time, the fixing hole 25 and the cleaning hole 26 are misaligned and not connected, so as to block the gas from blowing out through the cleaning hole 26; the positioning assembly 5 includes a positioning plate 51, a positioning rod 52 and a spring 53, the positioning plate 51 is coaxially fixedly installed on the cleaning roller 23, and a plurality of positioning grooves 54 are arranged in a circular array around the axis of the cleaning roller 23 on the outer wall of the positioning plate 51; the positioning rod 52 is radially slidably installed on the side wall of the body 1 along the positioning plate 51, and the end of the positioning rod 52 close to the positioning groove 54 is provided with an arc end that is snap-fitted with the positioning groove 54; one end of the spring 53 is fixedly installed on the body 1 and the other end is fixedly installed on the end of the positioning rod 52 away from the positioning plate 51, and the arc end is plugged and installed on the positioning plate 51 under the action of the spring 53, so as to position the cleaning roller 23.

[0072] Reference Figure 1 and Figure 3 The guide roller 21 rotates to drive the cleaning roller 23 to rotate, the cleaning roller 23 rotates to drive the positioning plate 51 to rotate, the positioning plate 51 rotates to drive the positioning rod 52 to disengage from the positioning groove 54, and after the guide roller 21 stops running, the positioning rod 52 moves back under the action of the spring 53 and is plugged into the positioning groove 54, so as to realize the positioning of the cleaning roller 23, and the cleaning hole 26 and the fixing hole 25 are disconnected, so as to realize the blocking of the cleaning hole 26.

[0073] Reference Figure 1 and Figure 4 The drying device 6 comprises a drying box 61, two preheating plates 62, two air outlet plates 63, two air suction plates 64 and a control mechanism 7. The drying box 61 is fixedly mounted on the machine body 1 and is located between the printing roller 11 and the conveying roller 12. At the same time, the drying box 61 is provided with an input port 65 and an output port 66 for the decorative paper to enter and output; the two preheating plates 62, the two air outlet plates 63 and the two air suction plates 64 are all fixedly mounted on the inner wall of the drying box 61 and are arranged vertically at intervals; the preheating plate 62 is used to heat and dry the decorative paper, the two air outlet plates 63 are used to blow out hot air to dry the upper and lower surfaces of the decorative paper, and the two air suction plates 64 are used to absorb the heat on the upper and lower surfaces of the decorative paper.

[0074] Reference Figure 1 and Figure 4, the preheating plates 62, the air outlet plates 63 and the air suction plates 64 are spaced apart and arranged perpendicular to the axis of the printing roller 11, so the decorative paper enters the drying box 61 through the input port 65, and then the decorative paper passes through the two preheating plates 62, the two air outlet plates 63 and the two air suction plates 64 in sequence, and then the decorative paper moves to the outside of the drying box 61 through the output port 66, and then the decorative paper moves to the two conveying rollers 12, and the two conveying rollers 12 rotate to drive the decorative paper to move; at the same time, the two preheating plates 62, the two air outlet plates 63 and the distances between the two preheating plates 62 and the upper and lower surfaces of the decorative paper are all equal, and air outlet holes for gas to pass through are opened on the opposite side walls of the two air outlet plates 63, and the aperture of the air outlet hole located below the decorative paper is larger than the aperture of the air outlet hole located above the decorative paper, so that the air outlet volume of the air outlet plate 63 located below the decorative paper is larger than the air outlet volume of the air outlet plate 63 located above the decorative paper, thereby blowing and supporting the decorative paper so that the decorative paper is in a horizontal state.

[0075] Reference Figure 1 and Figure 4 The control mechanism 7 is arranged on the drying box 61, and the control mechanism 7 is connected to the air outlet plate 63 and the air suction plate 64 and is used to control the flow of air; the control mechanism 7 includes a control box 71, a heating pipe 72, a control air pump 73, an air suction pipe 74 and a filter assembly 75, the control box 71 is fixedly installed on the upper surface of the drying box 61, and a sliding hole is opened on the side wall of the control box 71; the heating pipe 72 is fixedly installed on the inner bottom wall of the control box 71 and is used to heat the gas in the control box 71; the control air pump 73 is fixedly installed on the side wall of the control box 71, and the control air pump 73 is connected to the control box 71 located below the sliding hole, and at the same time, two air outlet pipes 731 fixedly connected to the opposite side walls of the air outlet plates 63 are fixedly installed on the control air pump 73, and the air outlet pipe 731 is connected to the air outlet hole.

[0076] Reference Figure 1 and Figure 4 One end of the suction pipe 74 is fixedly mounted on the side wall of the control box 71, and the suction pipe 74 is connected to the control box 71 located above the sliding hole. At the same time, the other end of the suction pipe 74 is fixedly connected to the two opposite side walls of the two suction plates 64, and the suction pipe 74 is connected to the suction hole; the filter assembly 75 is arranged on the control box 71 and is used to filter the air entering the control box 71. The filter assembly 75 includes a filter frame 76 and a mounting plate 77. The filter frame 76 is horizontally slidably mounted on the sliding hole, and a plurality of ventilation holes for air to pass through are evenly opened on the filter frame 76. The filter frame 76 is used to filter and collect impurities; the mounting plate 77 is fixedly mounted on the side wall of the filter frame 76, and the mounting plate 77 is pressed against the outer wall of the control box 71 for positioning.

[0077] Reference Figure 1 and Figure 4A limit assembly 8 for limiting the mounting plate 77 is provided on the control box 71. Two limit assemblies 8 are provided and are located on both sides of the mounting plate 77. The limit assembly 8 includes a limit block 81 and a rotating rod 82. The limit block 81 is fixedly mounted on the outer wall of the control box 71, and a limit groove 83 is provided on the upper surface of the limit block 81; the rotating rod 82 is rotatably mounted on the side wall of the mounting plate 77, and the rotating rod 82 is clamped in the limit groove 83 and is used to limit the mounting plate 77.

[0078] The working principle of the embodiment of the present application is as follows:

[0079] The decorative paper passes through the guide roller 21, the cleaning roller 23, the printing roller 11, the preheating plate 62, the air outlet plate 63, the air suction plate 64 and the conveying roller 12 in sequence. The guide roller 21 and the conveying roller 12 rotate to drive the decorative paper to move. The cleaning roller 23 rotates to connect the fixing hole 25 with the cleaning hole 26. The gas is blown to the decorative paper through the cleaning hole 26 to clean the impurities on both sides of the decorative paper. Then the printing roller 11 is used to print the decorative paper. Then the preheating plate 62 dries the printed decorative paper to achieve preliminary shaping. Then the hot air is blown out through the air outlet to continue drying the decorative paper. Then the heat on the decorative paper enters the filter frame 76 through the adsorption hole with the air for filtration. The filtered air is heated by the heating tube 72 and then blown out through the air outlet, thereby improving the quality of the decorative paper.

[0080] The heat on the decorative paper is recycled and utilized, which reduces the probability of heat being dissipated into the air and causing heat pollution, and also achieves energy conservation and environmental protection. At the same time, when the decorative paper stops printing, the guide roller 21 and the conveying roller 12 stop, and the positioning rod 52 is inserted and installed in the positioning groove 54 under the action of the spring 53 to position the cleaning roller 23, so that the fixing hole 25 and the cleaning hole 26 are disconnected, thereby achieving the blocking of the cleaning hole 26, thereby further reducing the probability of continuous gas output when cleaning is not required, reducing energy waste, and achieving energy conservation and environmental protection.

[0081] 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. An environmentally friendly gravure printing device for printing decorative paper in color, comprising a machine body (1), a printing roller (11) and a conveying roller (12) rotatably arranged on the machine body (1), characterized in that: The machine body (1) is provided with a drying device (6), and the drying device (6) comprises: A drying box (61), the drying box (61) being arranged on the machine body (1) and located between the printing roller (11) and the conveying roller (12); Two preheating plates (62), the two preheating plates (62) being arranged in the drying box (61) and used for drying both sides of the decorative paper; Two air outlet plates (63), the two air outlet plates (63) being arranged in the drying box (61) and located on both sides of the decorative paper and used for outputting hot air; Two air suction plates (64), the two air suction plates (64) being arranged in the drying box (61) and located on both sides of the decorative paper and used to absorb heat from the decorative paper, so that the decorative paper passing through the printing roller (11) passes through the preheating plate (62), the air outlet plate (63), the air suction plate (64) and the conveying roller (12) in sequence; A control mechanism (7), the control mechanism (7) being arranged on the drying box (61) and connected to the air outlet plate (63) and the air suction plate (64) and used to control the flow of air; The machine body (1) is provided with a cleaning mechanism (2) for cleaning the decorative paper, and the cleaning mechanism (2) comprises: Two guide rollers (21), the two guide rollers (21) being rotatably disposed on the machine body (1) and located on both sides of the decorative paper and used to drive the decorative paper to move; Two fixed rollers (22), the two fixed rollers (22) being arranged on the machine body (1) and located on both sides of the decorative paper and having a plurality of fixing holes (25) around the axis of the fixed rollers (22); Two cleaning rollers (23), the two cleaning rollers (23) being rotatably mounted on the two fixed rollers (22) and having a plurality of cleaning holes (26) arranged in a circumferential array for blowing toward the decorative paper, so that the decorative paper passes between the two cleaning rollers (23) and maintains a gap between the two cleaning rollers (23), and the cleaning holes (26) and the fixed holes (25) are connected when the two cleaning rollers (23) rotate; A connecting assembly (3), wherein the connecting assembly (3) is arranged on the guide roller (21) and connected to the cleaning roller (23); An air supply component (4), the air supply component (4) being arranged on the machine body (1) and being in communication with the fixing hole (25) and being used for providing gas; A positioning assembly (5) is arranged on the machine body (1) and is used to position the fixed roller (22) and to misalign the fixing hole (25) and the cleaning hole (26).

2. The environmentally friendly gravure decorative paper color printing equipment according to claim 1, characterized in that: The control mechanism (7) comprises: A control box (71), wherein the control box (71) is arranged on the drying box (61); A heating tube (72), wherein the heating tube (72) is arranged on the control box (71); A control air pump (73), wherein the control air pump (73) is disposed on the control box (71) and connected to the air outlet plate (63); An air suction pipe (74), the air suction pipe (74) being arranged on the control box (71) and connected to the air suction plate (64); A filter assembly (75) is arranged on the control box (71) and is used to filter air entering the control box (71) through the air suction pipe (74).

3. The environmentally friendly gravure decorative paper color printing equipment according to claim 2, characterized in that: The control box (71) is provided with a sliding hole, and the filter assembly (75) comprises: A filter frame (76), the filter frame (76) being slidably disposed on the sliding hole and used for filtering air; A mounting plate (77) is disposed on the filter frame (76) and abuts against the control box (71) for positioning.

4. The environmentally friendly gravure decorative paper color printing equipment according to claim 3, characterized in that: The control box (71) is provided with a limiting assembly (8) for limiting the position of the mounting plate (77), and the limiting assembly (8) comprises: A limit block (81), the limit block (81) being arranged on the control box (71) and having a limit slot (83); A rotating rod (82) is rotatably mounted on the mounting plate (77) and is snap-mounted on the limiting groove (83) for positioning.

5. The environmentally friendly gravure decorative paper color printing equipment according to claim 1, characterized in that: The distances between the two air outlet plates (63) and the two air suction plates (64) and the decorative paper are equal; the air outlet volume of the air outlet plate (63) located below the decorative paper is greater than the air outlet volume of the other air outlet plate (63) and is used to blow air to support the decorative paper and keep the decorative paper horizontal.

6. The environmentally friendly gravure decorative paper color printing equipment according to claim 1, characterized in that: The connection component (3) comprises: A first gear (31) and a second gear (32), wherein the first gear (31) and the second gear (32) are respectively arranged on the guide roller (21) and the cleaning roller (23); A connecting gear (33) is rotatably disposed on the machine body (1) and meshes with both the first gear (31) and the second gear (32).

7. The environmentally friendly gravure decorative paper color printing equipment according to claim 1, characterized in that: The air supply assembly (4) comprises: An air supply box (41), the air supply box (41) being arranged on the machine body (1) and provided with an air supply pipe (44) communicating with the fixing hole (25); an air supply pump (42), the air supply pump (42) being disposed on the air supply box (41) and being in communication with the air supply box (41); An air pressure detector (43) is arranged on the air supply box (41) and is used to detect the air pressure in the air supply box (41) and is electrically connected to the air supply pump (42).

8. The environmentally friendly gravure decorative paper color printing equipment according to claim 1, characterized in that: The positioning component (5) comprises: A positioning plate (51), the positioning plate (51) being arranged on the cleaning roller (23) and having a plurality of positioning grooves (54) arranged in a circular array around the axis of the cleaning roller (23); A positioning rod (52), wherein the positioning rod (52) is slidably disposed on the machine body (1); A spring (53) is provided on the machine body (1) and connected to the positioning rod (52) so that the positioning rod (52) is inserted and installed in the positioning groove (54) for positioning; after the cleaning roller (23) stops rotating, the positioning rod (52) is inserted and installed in the positioning groove (54) for positioning under the action of the spring (53), and the fixing hole (25) and the cleaning hole (26) are misaligned and not connected.

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