A color printing machine for packaging boxes

Abstract

The present invention belongs to the technical field of color printing machines, and specifically is a packaging box color printing machine, comprising a machine body, a feeding area, a discharging area, a workbench, a cleaning unit and a flattening unit, wherein the cleaning unit comprises a cleaning roller, a cavity is opened inside the cleaning roller, a first partition net is arranged inside the cavity, a plurality of wrinkled areas are arranged on the first partition net, a plurality of barbs are fixedly connected to the outer surface of the first partition net, a feeding channel is arranged outside the cavity, and a blocking plate is rotatably connected between the feeding channel and the cavity; the present invention scrapes the debris above the cardboard to the inner side of the feeding channel through the outer circular cutting edge of the cleaning roller, and then the debris falls onto the first partition net in the cavity under the action of gravity, and then the barbs on the first partition net can intercept the debris to prevent the debris from rolling in the cavity during the rotation of the cleaning roller, thereby improving the cleaning effect of the upper surface of the cardboard and reducing the probability of cardboard jam.

Description

Technical Field

[0001] The invention belongs to the technical field of color printers, in particular to a packaging box color printer. Background Art

[0002] A color printing press is a "non-contact with objects" inkjet printing type high-tech digital printing equipment. Whether it is a simple block color pattern, a full-color pattern or a pattern with transition colors, it can be printed in one go. Compared with traditional printing presses, color printing presses do not require plate making, plate exposure and repeated color registration. In addition, color printing presses are easy to operate and have stable performance. They can print higher quality than traditional methods and fully meet the high-intensity mass production requirements of various industries. They are widely used in silk screen factories, toy factories, packaging box manufacturers, etc. In the actual production process, color printing presses are fast and low-cost. With professional color management software, color can be changed anytime and anywhere without paying extra fees. At the same time, color printing presses have short printing time, and the images are waterproof, sun-proof, wear-resistant and have strong adhesion. However, there are still some problems with the color printing presses currently used in actual production.

[0003] At present, all printing machines on the market will inevitably have paper jams during use. The main reason for paper jams is the use of damp packaging cardboard. The damp cardboard becomes soft and easily wrinkles during movement, causing the cardboard to get stuck inside the printer. Another reason for paper jams is debris adhering to the surface of the cardboard. If the staff cannot quickly discover it, the debris can easily get stuck in the transmission part inside the printer during the printing process, causing the cardboard to be unable to move forward, resulting in paper jams. At the same time, too much debris on the packaging cardboard will also affect the printing quality and prevent the ink from adhering to the cardboard.

[0004] In view of this, the present invention solves the above technical problems by proposing a packaging box color printing machine. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the cardboard of the existing color printer equipment becomes damp during printing and has debris adhering to the surface, if the staff cannot quickly find it, the debris is easy to get stuck in the transmission part inside the printer during printing, causing the cardboard to be unable to move forward, thereby causing paper jams, the present invention proposes a color printing machine for packaging boxes.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a packaging box color printing machine described in the present invention comprises:

[0007] Body;

[0008] A feeding area and a discharging area, which are arranged on both sides of the machine body and are used to realize the feeding and discharging of packaging box paperboards;

[0009] A workbench, which is fixedly connected to the machine body and is located between the feeding area and the discharging area, and an inspection door is rotatably connected to a portion of the upper end of the machine body corresponding to the workbench;

[0010] Feeding rollers, the plurality of feeding rollers are arranged in the feeding area and are used to convey paperboard;

[0011] A pickup roller, the pickup roller being arranged at the leftmost side of the feed roller;

[0012] A printing unit, the printing unit being movably connected to the upper left of the workbench;

[0013] Also includes:

[0014] A cleaning unit, the cleaning unit is arranged above the pickup roller, and the cleaning unit is used to clean the debris on the surface of the paperboard;

[0015] A leveling unit is arranged on the left side of the cleaning unit, and is used for leveling and drying the cardboard.

[0016] Preferably, the cleaning unit comprises:

[0017] A cleaning roller, the cleaning roller is arranged above the pickup roller, and a cavity is provided inside the cleaning roller;

[0018] A first partition net, the first partition net is annular and arranged inside the cavity, the outer ring surface of the first partition net is evenly concave inward to form a concave surface, and the outer ring surface of the first partition net is evenly fixed with a plurality of barbs;

[0019] A feed channel, the feed channel is evenly arranged on the cleaning roller and located at the outer side of the cavity, so as to connect the outside with the cavity;

[0020] A baffle plate is rotatably connected between the feed channel and the cavity, and the baffle plate is used to prevent debris in the cavity from flowing back.

[0021] Preferably, a cutting edge is provided inside the feed channel and on the outer circumference of the cleaning roller, and the cutting edge protrudes outward and is larger than the diameter of the cleaning roller.

[0022] Preferably, the end surface of the baffle plate and the portion of the inner wall of the feed channel that contacts the end surface of the baffle plate are both inclined and fit each other.

[0023] Preferably, the bending direction of the barb end portion inside the recessed surface points to the recessed bottom of the recessed surface.

[0024] Preferably, the leveling unit comprises:

[0025] An ironing plate, which is arranged on the left side of the cleaning roller, and a heating unit is arranged at the bottom of the ironing plate;

[0026] An electric telescopic rod, which is arranged at the upper end of the ironing plate and is used to drive the ironing plate to move up and down;

[0027] The collecting box is fixedly connected to the right side of the ironing plate. An inclined plane is arranged below the collecting box and on the right bottom of the ironing plate, and the angle between the inclined plane and the horizontal plane is an acute angle.

[0028] Preferably, a swing rod is rotatably connected to the opening provided on the inner side of the collection box, and the length of the swing rod is greater than the width of the opening of the collection box.

[0029] Preferably, a connecting rod is provided between the cleaning roller and the ironing plate, an auxiliary plate is fixedly connected to the lower middle part of the connecting rod, and the auxiliary plate is located between the cleaning roller and the ironing plate, the cleaning roller is rotatably connected to the right end of the connecting rod, and the ironing plate is fixedly connected to the left end of the connecting rod.

[0030] Preferably, among the plurality of evenly arranged feeding rollers, the feeding roller close to the right side inside the feeding area has a polygonal cross-section.

[0031] Preferably, a second partition net is provided inside the hollow cavity of the cleaning roller, and an exhaust pipe is provided on the inner side of the second partition net.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The color printing machine for packaging boxes described in the present invention scrapes the debris above the cardboard to the inner side of the feed channel through the outer circular cutting edge on the cleaning roller, and then the debris falls onto the first partition net in the cavity under the action of gravity, and then the barbs on the first partition net can intercept the debris, thereby reducing the debris from rotating with the cleaning roller, and the concave surface in the first partition net can increase the area of ​​the first partition net, thereby increasing the carrying capacity of the first partition net, so that the first partition net can carry more debris, thereby improving the cleaning effect of the upper surface of the cardboard and reducing the number of cardboard jams.

[0034] 2. The packaging box color printing machine described in the present invention can smooth the cardboard in advance through the bottom of the ironing plate, thereby reducing the situation where wrinkles appear when the cardboard enters the workbench, causing the cardboard to be unable to move forward quickly and thus causing paper jams. At the same time, the heating unit at the bottom of the ironing plate dries the cardboard, thereby reducing the humidity of the cardboard, making the cardboard harder and less prone to wrinkles and paper jams. At the same time, the cardboard that has been smoothed by the ironing plate will not cause the color printed pattern to be misaligned due to the wrinkles of the cardboard during the printing process of the printing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 is a perspective view of the device of the present invention;

[0037] Figure 2 is a partially cutaway stereoscopic view of the device of the present invention;

[0038] Figure 3 is a partial cross-sectional view of the front of the device of the present invention;

[0039] Figure 4 is a cross-sectional view of the connection between the ironing plate and the collecting box of the present invention;

[0040] Figure 5 is a cross-sectional view of a cleaning roller according to a first embodiment of the present invention;

[0041] Figure 6 yes Figure 5 A partial enlarged view of the middle part;

[0042] Figure 7 It is a cross-sectional view of the cleaning roller of the second embodiment of the present invention.

[0043] In the figure: 1. machine body; 11. inspection door; 12. workbench; 2. feeding area; 21. feeding roller; 22. paper pickup roller; 3. cleaning roller; 31. cavity; 32. first partition net; 321. recessed surface; 322. barb; 33. feeding channel; 331. cutting edge; 34. baffle plate; 4. ironing plate; 41. electric telescopic rod; 42. collecting box; 421. swing rod; 43. connecting rod; 431. auxiliary plate; 44. heating unit; 5. printing unit; 6. second partition net; 61. exhaust pipe; 7. discharge area. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0045] like Figures 1 to 7 As shown;

[0046] Embodiment 1, a packaging box color printing machine according to the present invention comprises:

[0047] Body 1;

[0048] A feeding area 2 and a discharging area 7, wherein the feeding area 2 and the discharging area 7 are arranged on both sides of the machine body 1, and are used to realize the feeding and discharging of packaging box paperboards;

[0049] A workbench 12, the workbench 12 is fixedly connected to the machine body 1 and is located between the feeding area 2 and the discharging area 7, and an inspection door 11 is rotatably connected to a portion of the upper end of the machine body 1 corresponding to the workbench 12;

[0050] Feeding rollers 21, the plurality of feeding rollers 21 are arranged in the feeding area 2, and are used to convey paperboard;

[0051] A pickup roller 22, the pickup roller 22 is arranged at the leftmost side of the feed roller 21;

[0052] A printing unit 5, wherein the printing unit 5 is movably connected to the upper left of the workbench 12;

[0053] Also includes:

[0054] A cleaning unit, the cleaning unit is arranged above the pickup roller 22, and the cleaning unit is used to clean the debris on the surface of the paperboard;

[0055] A leveling unit is arranged on the left side of the cleaning unit, and is used for leveling and drying the cardboard.

[0056] During operation, the packaging box cardboard to be printed is first placed above the feed roller 21 in the feed area 2, and then the drive motor inside the machine body 1 drives the feed roller 21 to rotate, thereby slowly conveying the cardboard to the direction of the printing unit 5. When the cardboard contacts the pickup roller 22, the pickup roller 22 is driven by another drive motor inside the machine body 1 to rotate, thereby driving the cardboard to further move in the direction of the printing unit 5. At the same time, the cleaning unit above the pickup roller 22 cleans the debris above the cardboard, thereby reducing the situation where too much debris enters the printer and causes paper jams. At the same time, the cleaning unit removes the debris above the cardboard. Cleaning it up is conducive to the ink in the printing unit 5 adhering to the cardboard, thereby improving the printing quality. At the same time, when the pickup roller 22 drives the cardboard to move to the bottom of the flattening unit, the flattening unit can flatten the cardboard in advance, reducing the probability of wrinkles on the cardboard during movement, making the cardboard smoother during movement, and preventing the printed ink from being sprayed on the wrinkles of the cardboard to affect actual use. At the same time, the flattening unit can also dry the cardboard, reducing the number of paper jams caused by the cardboard becoming damp and soft. Then, when the cardboard moves to the bottom of the printing unit 5, the printing unit 5 sprays ink to print color on the cardboard.

[0057] The cleaning unit comprises:

[0058] A cleaning roller 3, wherein the cleaning roller 3 is disposed above the pickup roller 22, and a cavity 31 is formed inside the cleaning roller 3;

[0059] A first partition net 32, which is annular and disposed inside the cavity 31, and has an outer ring surface of the first partition net 32 ​​that is evenly inwardly concave to form a concave surface 321, and a plurality of barbs 322 evenly fixedly connected to the outer ring surface of the first partition net 32;

[0060] A feed channel 33 is evenly arranged on the cleaning roller 3 and located at the outer side of the cavity 31 to connect the outside with the cavity 31; a baffle plate 34 is rotatably connected between the feed channel 33 and the cavity 31, and the baffle plate 34 is used to prevent debris in the cavity 31 from flowing back.

[0061] A cutting edge 331 is provided inside the feed channel 33 and on the outer circumference of the cleaning roller 3. The cutting edge 331 protrudes outward and is larger than the diameter of the cleaning roller 3. The end surface of the baffle plate 34 and the portion of the inner wall of the feed channel 33 that contacts the end surface of the baffle plate 34 are inclined and fit each other. The bending direction of the end of the barb 322 inside the concave surface 321 points to the concave bottom of the concave surface 321.

[0062] Among the multiple uniformly arranged feeding rollers 21, the feeding roller 21 close to the right side of the feeding area 2 has a polygonal cross section.

[0063] Furthermore, when the paper pickup roller 22 drives the cardboard to move, the cleaning roller 3 in the cleaning unit contacts the cardboard, and the cleaning roller 3 rotates clockwise under the drive of the internal driving motor. Because the cutting edge 331 protrudes outward and is larger than the diameter of the cleaning roller 3, the cleaning roller 3 can scrape the debris above the cardboard to the inside of the feeding channel 33 through the cutting edge 331. At the same time, the cleaning roller 3 continues to rotate and drives the feeding channel 33 containing the debris to rotate upward. At the same time, the blocking plate 34 between the feeding channel 33 and the cavity 31 rotates toward the inside of the cavity 31 under the action of gravity, so that the debris inside the feeding channel 33 slides onto the first partition net 32 ​​in the cavity 31 under the action of gravity, and then the barbs 322 on the first partition net 32 ​​can intercept part of the debris, thereby reducing the amount of debris that rotates with the cleaning roller 3 and preventing the debris from rolling inside the cavity 31 and easily flowing out of the cavity 31.

[0064] At the same time, the cleaning roller 3 keeps rotating. When the cutting edge 331 on the cleaning roller 3 contacts the paperboard, the blocking plate 34 on the inner side of the corresponding cutting edge 331 rotates toward one side of the feeding channel 33 under the action of gravity, and fits with the edge slope of the feeding channel 33, thereby separating the cavity 31 from the feeding channel 33, and reducing the debris in the cavity 31 that is not trapped by the barb 322 from flowing back onto the paperboard due to gravity.

[0065] The concave surface 321 in the first partition net 32 ​​can increase the area of ​​the first partition net 32, thereby improving the carrying capacity of the first partition net 32, so that the first partition net 32 ​​can carry more debris, so that the first partition net 32 ​​does not need to be cleaned frequently, and at the same time, the bending direction of the end of the barb 322 in the concave surface 321 points to the concave bottom of the concave surface 321, so that the barb 322 can intercept the debris in the concave direction of the concave surface 321, thereby increasing the interception amount of the debris, thereby improving the cleaning effect of the paperboard surface and reducing the probability of paperboard jam;

[0066] At the same time, among the multiple evenly arranged feed rollers 21, the cross-section of the feed roller 21 close to the left side of the feed area 2 is polygonal, so that when the cardboard moves above the feed roller 21, and because the shapes of the polygonal feed rollers 21 are different and the rotation frequencies of the feed rollers 21 are inconsistent, the cardboard will swing up and down on the surface of the feed roller 21, causing the cardboard to vibrate, and then the debris under the cardboard falls into the feed area 2 under the vibration and gravity, reducing the probability of the debris under the cardboard entering the workbench 12 and causing paper jams.

[0067] The leveling unit comprises:

[0068] An ironing plate 4, wherein the ironing plate 4 is arranged on the left side of the cleaning roller 3, and a heating unit 44 is arranged at the bottom of the ironing plate 4;

[0069] A collecting box 42, wherein the collecting box 42 is fixedly connected to the right side of the screed plate 4, and an inclined plane is provided below the collecting box 42 and on the right bottom of the screed plate 4, and the angle between the inclined plane and the horizontal plane is an acute angle;

[0070] The opening provided on the inner side of the collection box 42 is rotatably connected with a swing rod 421, and the length of the swing rod 421 is greater than the width of the opening of the collection box 42;

[0071] Furthermore, after the cardboard passes through the cleaning roller 3, the bottom of the ironing plate 4 in the leveling unit will level the cardboard, thereby reducing the probability of wrinkles when the cardboard enters the workbench 12, causing the cardboard to be unable to move forward quickly, thereby causing paper jams. At the same time, the heating unit 44 at the bottom of the ironing plate 4 dries the cardboard, thereby reducing the humidity of the cardboard, making the cardboard harder and less prone to wrinkles and paper jams. At the same time, the cardboard leveled by the ironing plate 4 will prevent the printing unit 5 from misaligning the color printing pattern due to the wrinkles of the cardboard during the printing process, and reduce the possibility of Brownian motion of the ink in the printing unit 5 being sprayed on the damp cardboard after the cardboard is damp, resulting in blurred printing patterns.

[0072] At the same time, an acute angle inclined surface is arranged on the right side of the ironing plate 4, so that the ironing plate 4 can further scrape off the debris on the cardboard, so that the debris on the cardboard is further cleaned, and some tapes adhering to the cardboard can be scraped off, so as to prevent the printing unit 5 from failing to adhere to the surface of the cardboard due to the influence of debris or tape during the color printing process, and the debris on the inclined surface of the ironing plate 4 gradually increases and gradually rises along the inclined surface, and then the debris pushes the swing rod 421 to rotate from the opening of the collecting box 42, and moves The slab 4 moves to the top of the swing rod 421, and then some of the debris falls into the collection box 42 under the action of gravity. When there is no more debris to continue to support the swing rod 421 to rotate, because the length of the swing rod 421 is greater than the width of the opening of the collection box 42, the swing rod 421 contacts the side wall of the ironing plate 4 again under the action of gravity, so that the debris above the swing rod 421 slides along the swing rod 421 into the collection box 42, thereby improving the debris cleaning effect of the cardboard, reducing the possibility of paper jams caused by the debris, and affecting the printing quality due to the debris.

[0073] An electric telescopic rod 41, which is arranged at the upper end of the ironing plate 4 and is used to drive the ironing plate 4 to move up and down; a connecting rod 43 is arranged between the cleaning roller 3 and the ironing plate 4, the cleaning roller 3 is rotatably connected to the right end of the connecting rod 43, and the ironing plate 4 is fixedly connected to the left end of the connecting rod 43;

[0074] An auxiliary plate 431 is fixedly connected to the lower middle portion of the connecting rod 43 , and the auxiliary plate 431 is located between the cleaning roller 3 and the ironing plate 4 .

[0075] Furthermore, when it is necessary to print paperboards of different thicknesses, the ironing plate 4 can be moved up and down by adjusting the electric telescopic rod 41. During the up and down movement of the ironing plate 4, the ironing plate 4 drives the cleaning roller 3 and the auxiliary plate 431 to move synchronously through the connecting rod 43, so that the cleaning roller 3, the ironing plate 4 and the auxiliary plate 431 can adapt to paperboards of different thicknesses, ensuring that the printing press can adapt to packaging box paperboards of different thicknesses;

[0076] At the same time, when the cleaning roller 3 rotates to scrape the impurities on the cardboard, under the obstruction of the auxiliary plate 431, the cleaning roller 3 will push the impurities on the cardboard to the arc surface of the auxiliary plate 431 adjacent to the cleaning roller 3, and then the impurities on the arc surface of the auxiliary plate 431 fall into the feeding channel 33 in the cleaning roller 3 under the action of their own gravity, preventing the cleaning roller 3 from completely relying on the cutting edge 331 to scrape the impurities, which may lead to incomplete cleaning; at the same time, the side of the auxiliary plate 431 close to the inclined surface of the ironing plate 4 can provide obstruction for the impurities on the inclined surface of the ironing plate 4, making it easier for the impurities to slide upward along the inclined surface of the ironing plate 4, thereby facilitating the accumulation of impurities on the inclined surface of the ironing plate 4.

[0077] Embodiment 2: The difference between Embodiment 2 and Embodiment 1 is that a second partition net 6 is arranged inside the cavity 31 of the cleaning roller 3 , and an exhaust pipe 61 is arranged inside the second partition net 6 .

[0078] During operation, when it is necessary to increase the printing efficiency of the cardboard, the moving speed of the cardboard on the paper pickup roller 22 is accelerated, and then the rotation speed of the cleaning roller 3 is accelerated, so that the exhaust pipe 61 inside the second partition net 6 adsorbs the debris entering the cavity 31 onto the second partition net 6, preventing the cleaning roller 3 from being unable to quickly lock the debris using the barb 322 during rapid rotation. At the same time, as the rotation speed is accelerated, the debris inside the cavity 31 is also easy to slip out of the feed channel 33, so that the debris is adsorbed by the exhaust pipe 61, reducing the possibility of the debris slipping out.

[0079] The specific workflow is as follows:

[0080] When the pickup roller 22 drives the cardboard to move, the cleaning roller 3 in the cleaning unit contacts the cardboard, and the cleaning roller 3 rotates clockwise under the drive of the internal driving motor, so that the cleaning roller 3 scrapes the debris above the cardboard to the inside of the feeding channel 33 through the outer circular cutting edge 331, and then the cleaning roller 3 continues to rotate, so that the feeding channel 33 containing the debris moves upward, and at the same time, the blocking plate 34 between the feeding channel 33 and the cavity 31 rotates toward the inside of the cavity 31 under the action of gravity, so that the internal debris falls onto the first partition net 32 ​​in the cavity 31 under the action of gravity, and then the barb 322 on the first partition net 32 ​​can intercept the debris, and at the same time, the shape of the feeding roller 21 The paperboard is polygonal and has inconsistent rotation frequencies. Therefore, when the paperboard moves over the feeding roller 21, the paperboard will swing up and down on the surfaces of multiple polygonal feeding rollers 21 with different shapes, so that the debris under the paperboard falls into the feeding area 2 under the swinging and gravity, preventing the debris under the paperboard from entering the workbench 12, and the bottom of the ironing plate 4 will flatten the paperboard, reducing the probability of wrinkles when the paperboard enters the workbench 12. At the same time, the heating unit 44 at the bottom of the ironing plate 4 dries the paperboard, reducing the wrinkles and paper jams caused by the paperboard becoming soft due to moisture, and preventing the paperboard from being jammed due to debris, wrinkles or moisture during movement.

[0081] In order to fully illustrate the beneficial effects of the packaging box color printing device of the present invention and verify that the device of the present invention is superior to the packaging box color printing device of the prior art, the following experiments are conducted:

[0082] 1.1 Experimental purpose: To verify that the number of paper jams of the color printing device for packaging boxes of the present invention is lower than that of the same type of devices commonly used in the market;

[0083] 1.2 Experimental equipment: the same type of packaging box color printing machine on the market and the packaging box color printing machine of the present invention;

[0084] 1.3 Experimental steps:

[0085] 1.31 First, select two rectangular cardboards of the same specifications and materials, and then divide the printed side of the rectangular cardboard into four corners and five areas in the middle, and number them as A, B, C, D, and E;

[0086] 1.32 Two paperboards that have not been manually cleaned are printed in color using the color printer of the present invention and the color printer of the prior art respectively;

[0087] 1.33 Then observe the debris in the five areas on the cardboard respectively, taking the debris particles of 1mm visible to the naked eye as the observation standard;

[0088] 1.34 Count the debris with lengths of 1-3 (not included) mm, 3-5 (not included) mm, and ≧5 mm in five areas on the two cardboards, and then establish statistical tables for the control group and the experimental group;

[0089] 1.4 Test results: 1.41

[0091] Table 1

[0092] 1.42

[0094] Table 2

[0095]

[0096] 1.5 Experimental analysis:

[0097] 1.51 By comparing the test data in Table 1 and Table 2: 1-3 (not included) mm, 3-5 (not included) mm, ≧5 mm, it can be seen that after printing by the color printing machine of the present invention, the number of debris particles on the cardboard is less than the number of debris particles of the color printing machine of the prior art;

[0098] 1.52 The variance of the 1-3 (not included) mm, 3-5 (not included) mm, and ≧5 mm debris particles observed by the color printer of the present invention is calculated respectively, according to the variance formula: S 2 =[(M-X1) 2 +(M-X2) 2 +...+(MX n ) 2 ] / n, (M is the mean of a single group of project data, n is 5), the variance of 1-3 (not included) mm is 3.3, the variance of 3-5 (not included) mm is 1.3, and the variance of ≧5 mm is 0.2;

[0099] 1.6 Experimental summary:

[0100] In summary, the cardboard debris particles processed by the color printing machine according to the present invention are significantly reduced. At the same time, according to the variance, it can be concluded that the number of debris particles in the five areas of the color printing machine of the present invention fluctuates little, indicating that in the process of processing debris particles by the color printing machine of the present invention, the cleaning effect of each area is balanced, ensuring the overall cleanliness of the cardboard;

[0101] Therefore, according to the reduction of cardboard debris particles, it is indirectly verified that the probability of paper jams caused by debris particles in the color printing press cardboard of the present invention is lower than that of paper jams in the color printing press cardboard of the prior art.

[0102] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0103] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0104] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A packaging box color printing machine, comprising: A machine body (1); a feeding area (2) and a discharging area (7), the feeding area (2) and the discharging area (7) being arranged on both sides of the machine body (1) and used for feeding and discharging packaging box paperboard; a workbench (12), the workbench (12) being fixedly connected to the machine body (1) and being located between the feeding area (2) and the discharging area (7), an inspection door (11) being rotatably connected to a portion of the upper end of the machine body (1) corresponding to the workbench (12); a feeding roller (21), a plurality of feeding rollers (21) being arranged in the feeding area (2) and used for conveying paperboard; a pickup roller (22), the pickup roller (22) being arranged at the leftmost side of the feeding roller (21); A printing unit (5), the printing unit (5) being movably connected to the upper left of the workbench (12); characterized in that it also comprises: a cleaning unit, the cleaning unit being arranged above the paper pickup roller (22), the cleaning unit being used to clean the debris on the surface of the paperboard; a leveling unit, the leveling unit being arranged on the left side of the cleaning unit, the leveling unit being used to level and dry the paperboard; The cleaning unit comprises: a cleaning roller (3), the cleaning roller (3) being arranged above the paper pickup roller (22), and a cavity (31) being provided inside the cleaning roller (3); a first partition net (32), the first partition net (32) being annular and arranged inside the cavity (31), the outer ring surface of the first partition net (32) being evenly concave inward to form a concave surface (321), and the outer ring surface of the first partition net (32) being evenly fixedly connected with a plurality of barbs (322); a feeding channel (33), the feeding channel (33) being evenly arranged on the cleaning roller (3) and located at the outer side of the cavity (31), for connecting the outside with the cavity (31); a baffle plate (34) being rotatably connected between the feeding channel (33) and the cavity (31), and the baffle plate (34) being used to prevent debris in the cavity (31) from flowing back; A cutting edge (331) is provided inside the feed channel (33) and on the outer circumference of the cleaning roller (3); the cutting edge (331) protrudes outward and is larger than the diameter of the cleaning roller (3); The end surface of the baffle plate (34) and the portion of the inner wall of the feed channel (33) that contacts the end surface of the baffle plate (34) are both inclined and fit each other; The bending direction of the end of the barb (322) inside the recessed surface (321) points to the recessed bottom of the recessed surface (321); A second partition net (6) is arranged inside the hollow cavity (31) of the cleaning roller (3), and an air extraction pipe (61) is arranged on the inner side of the second partition net (6).

2. A packaging box color printing machine according to claim 1, characterized in that: The leveling unit comprises: an ironing plate (4), the ironing plate (4) being arranged on the left side of the cleaning roller (3), and a heating unit (44) being arranged at the bottom of the ironing plate (4); an electric telescopic rod (41), the electric telescopic rod (41) being arranged at the upper end of the ironing plate (4) and used for driving the ironing plate (4) to move up and down; and a collecting box (42), the collecting box (42) being fixedly connected to the right side of the ironing plate (4), and an inclined surface being arranged below the collecting box (42) and on the right bottom of the ironing plate (4), and the angle between the inclined surface and the horizontal plane is an acute angle.

3. A packaging box color printing machine according to claim 2, characterized in that: The opening provided on the inner side of the collection box (42) is rotatably connected to a swing rod (421), and the length of the swing rod (421) is greater than the width of the opening of the collection box (42).

4. A packaging box color printing machine according to claim 2, characterized in that: A connecting rod (43) is provided between the cleaning roller (3) and the ironing plate (4); an auxiliary plate (431) is fixedly connected to the lower middle portion of the connecting rod (43); and the auxiliary plate (431) is located between the cleaning roller (3) and the ironing plate (4); the cleaning roller (3) is rotatably connected to the right end of the connecting rod (43); and the ironing plate (4) is fixedly connected to the left end of the connecting rod (43).

5. A packaging box color printing machine according to claim 1, characterized in that: Among the multiple evenly arranged feeding rollers (21), the feeding roller (21) close to the right side inside the feeding area (2) has a polygonal cross-section.

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