Roller paper processing device for color carton printing

Abstract

The utility model discloses a cylinder paper processing device for color carton printing, which comprises a rack, the inner wall of the rack is rotatably connected with an impression cylinder and a first air pipe, one end of the first air pipe is in threaded connection with a second air pipe, and the other end of the first air pipe is fixedly communicated with a butt joint pipe. A transmission shaft is fixedly connected to one end of the impression cylinder, gears fixedly sleeve the outer wall of the butt joint pipe and the outer wall of the transmission shaft, the two gears are connected in a meshed mode, and a rotary connector fixedly communicates with one end of the butt joint pipe. According to the utility model, the nylon brush which rotates reversely is matched with the negative pressure suction system, so that pollutants such as dust and paper scraps on the printing surface of the carton can be effectively removed, the printing quality is improved, and printing flaws are reduced; the detachable rubber sleeve structure is adopted, the rubber sleeve and the nylon brush can be easily taken out only by loosening the limiting assembly, complex disassembly and assembly are not needed, the maintenance efficiency is remarkably improved, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box printing technology, and in particular to a roller paper processing device for color cardboard box printing. Background Technology

[0002] Color carton printing refers to the process of printing colored patterns and text onto the surface of a carton through a series of technological steps. The printing cylinders provide stable support for the carton during the printing process, ensuring that the carton does not shift or deform. For example, the impression cylinder, through contact with the printing plate cylinder, ensures the carton remains stable during printing, thereby preventing misalignment of the printed patterns.

[0003] In the color printing process of cardboard boxes, the cleanliness of the printing surface directly affects the printing quality. If there is dust, paper scraps, or other particles on the surface of the cardboard box, it will cause uneven ink adhesion and printing defects (such as missing prints, color differences, missing dots, etc.), which will seriously affect the finished product qualification rate.

[0004] In existing technologies, current carton printing equipment typically lacks efficient cleaning devices before printing, or only uses simple brushes or air blowing for dust removal, resulting in limited cleaning effectiveness and difficulty in thoroughly removing contaminants from the printed surface. Furthermore, the nylon brushes of traditional cleaning devices are prone to wear and clogging after prolonged use, requiring regular replacement to maintain cleaning efficiency. However, existing cleaning structures are often complex in design, with cumbersome disassembly and replacement processes that require downtime, impacting production efficiency. For example, some equipment uses fixed brush holders, requiring the removal of multiple bolts or adjustment of the entire mechanism for replacement, which is time-consuming and labor-intensive; others use integrated cleaning rollers, making it impossible to replace the brushes individually, leading to increased maintenance costs. Therefore, we propose a roller paper handling device for color carton printing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a roller paper handling device for color carton printing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A roller paper processing device for color carton printing includes a frame. An impression cylinder and a first air pipe are rotatably connected to the inner wall of the frame. A second air pipe is threaded to one end of the first air pipe, and a connecting pipe is fixedly connected to the other end of the first air pipe. A drive shaft is fixedly connected to one end of the impression cylinder. Gears are fixedly fitted on the outer walls of both the connecting pipe and the drive shaft, and the two gears are meshed together. A rotary joint is fixedly connected to one end of the connecting pipe, and an exhaust pipe is fixedly connected to the outer wall of the rotary joint. A dust removal fan is fixedly connected to one end of the exhaust pipe. Rubber sleeves are fitted on the outer walls of both the first and second air pipes. Multiple nylon brushes are evenly fixedly connected to the outer walls of the two rubber sleeves. A limiting component is provided at one end of the second air pipe. Multiple strip-shaped holes are evenly opened on the outer walls of the first and second air pipes. A guide component is provided at the bottom of the impression cylinder.

[0008] Preferably, the limiting component includes a bushing, one end of the second air tube is rotatably connected to the inner wall of the bushing, an L-shaped plate is fixedly connected to the outer wall of the bushing, a threaded post is fixedly connected to the top of the L-shaped plate, and a locking cap is threaded to the outer wall of the threaded post. The limiting component is used to assist the second air tube in rotating.

[0009] Preferably, the guiding assembly includes a conveying guide plate, a U-shaped frame is fixedly connected to the bottom of the frame, an electric push rod is fixedly connected inside the U-shaped frame, and the top of the output end of the electric push rod is fixedly connected to the bottom of the conveying guide plate. By setting the guiding assembly, the height of the conveying guide plate can be adjusted to meet the conveying needs of cartons of different thicknesses.

[0010] Preferably, the outer wall of the frame has two through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the connecting pipe and the drive shaft, respectively.

[0011] Preferably, the outer wall of the frame is provided with a groove, and the inner wall of the groove is rotatably connected to the outer wall of the second air pipe. When the second air pipe is in contact with the first air pipe and the bushing has moved away from the right end of the second air pipe, the right end of the second air pipe slides out directly through the groove.

[0012] Preferably, the outer wall of the frame is provided with a rectangular groove, and the inner wall of the rectangular groove is slidably connected to the outer wall of the threaded column. The rectangular groove is used to assist the threaded column in moving and fixing.

[0013] Preferably, the bottom of the frame has a circular hole, and the inner wall of the circular hole is slidably connected to the outer wall of the output end of the electric push rod.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] This solution effectively removes dust, paper scraps, and other contaminants from the printed surface of cartons by using a reverse-rotating nylon brush in conjunction with a negative pressure suction system, thereby improving printing quality and reducing printing defects. The detachable rubber sleeve structure allows for easy removal of the rubber sleeve and nylon brush simply by loosening the limiting component, eliminating the need for complex disassembly and significantly improving maintenance efficiency and reducing labor costs. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a roller paper processing device for color carton printing proposed in this utility model.

[0018] Figure 2 This is a rear cross-sectional view of a roller paper handling device for color carton printing proposed in this utility model.

[0019] Figure 3 This is a partial three-dimensional structural diagram of a roller paper processing device for color carton printing proposed in this utility model.

[0020] Figure 4 This utility model proposes a roller paper handling device for color carton printing. Figure 2 A magnified structural diagram of part A in the diagram;

[0021] Figure 5 This utility model proposes a roller paper handling device for color carton printing. Figure 2 A magnified structural diagram of part B in the diagram;

[0022] Figure 6 This utility model proposes a roller paper handling device for color carton printing. Figure 2 A magnified structural diagram of part C in the diagram.

[0023] In the diagram: 1. Frame; 2. Imprinting cylinder; 3. First air pipe; 4. Second air pipe; 5. Connecting pipe; 6. Drive shaft; 7. Gear; 8. Rotary joint; 9. Rubber sleeve; 10. Nylon brush; 11. Bushing; 12. L-shaped plate; 13. Threaded post; 14. Locking cap; 15. Strip hole; 16. Electric push rod; 17. Conveyor guide plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Depend on Figures 1-6 As shown, a roller paper processing device for color carton printing is disclosed, comprising a frame 1, which is welded from high-strength steel plate and rust-proofed to ensure long-term stable operation. Adjustable feet are provided on both sides of the frame 1 to facilitate equipment leveling. An impression roller 2 and a first air pipe 3 are rotatably connected to the inner wall of the frame 1. A second air pipe 4 is threadedly connected to one end of the first air pipe 3. The first air pipe 3 and the second air pipe 4 are made of aluminum alloy and have a hollow internal design. A sealing ring (such as a fluororubber O-ring) is provided at the threaded connection to ensure airtightness during negative pressure suction.

[0026] The outer wall of the frame 1 has a groove, the inner wall of which is rotatably connected to the outer wall of the second air pipe 4. The other end of the first air pipe 3 is fixedly connected to the connecting pipe 5. One end of the impression roller 2 is fixedly connected to the drive shaft 6. The drive shaft 6 is directly connected to the existing geared motor through a coupling. The outer wall of the frame 1 has two through holes, the inner walls of which are rotatably connected to the outer walls of the connecting pipe 5 and the drive shaft 6, respectively. Roller bearings are fixedly fitted on the outer walls of both the connecting pipe 5 and the drive shaft 6. The outer rings of the roller bearings are fixedly connected to the outer wall of the frame 1. Gears 7 are fixedly fitted on the outer walls of both the connecting pipe 5 and the drive shaft 6. The two gears 7 are meshed together.

[0027] A rotary joint 8 is fixedly connected to one end of the connecting pipe 5. An air extraction pipe is fixedly connected to the outer wall of the rotary joint 8. A dust removal fan is fixedly connected to one end of the air extraction pipe. Rubber sleeves 9 are fitted on the outer walls of the first air pipe 3 and the second air pipe 4. The inner wall of the rubber sleeve 9 is provided with anti-slip texture to ensure that there is no relative sliding with the air pipe. Multiple nylon brushes 10 are evenly fixedly connected to the outer walls of the two rubber sleeves 9. Multiple strip holes 15 are evenly opened on the outer walls of the first air pipe 3 and the second air pipe 4. The multiple strip holes 15 are evenly distributed along the axial direction of the air pipe. The edges of the holes are chamfered to prevent paper fibers from sticking.

[0028] One end of the second air tube 4 is provided with a limiting component, which includes a bushing 11. One end of the second air tube 4 is rotatably connected to the inner wall of the bushing 11. A self-lubricating copper sleeve is embedded inside the bushing 11 to reduce frictional resistance with the second air tube 4. An L-shaped plate 12 is fixedly connected to the outer wall of the bushing 11. A threaded post 13 is fixedly connected to the top of the L-shaped plate 12. A rectangular groove is opened on the outer wall of the frame 1. The inner wall of the rectangular groove is slidably connected to the outer wall of the threaded post 13. A locking cap 14 is threadedly connected to the outer wall of the threaded post 13.

[0029] The bottom of the impression cylinder 2 is provided with a guide assembly, which includes a conveying guide plate 17. A U-shaped frame is fixedly connected to the bottom of the frame 1. An electric push rod 16 is fixedly connected inside the U-shaped frame. A round hole is opened at the bottom of the frame 1. The inner wall of the round hole is slidably connected to the outer wall of the output end of the electric push rod 16. The top of the output end of the electric push rod 16 is fixedly connected to the bottom of the conveying guide plate 17. The electric push rod 16 drives the conveying guide plate 17 to move up and down, which can change the distance between the conveying guide plate 17 and the impression cylinder 2.

[0030] Working Principle: During use, the carton is conveyed by existing conveying equipment (such as a conveyor belt). Before color printing, the carton passes between the impression roller 2 and the conveyor guide plate 17. The impression roller 2 is connected to the transmission shaft 6 via an existing drive device (gear motor) to achieve rotation. The rotation of the transmission shaft 6 drives the gear 7 connected to it to rotate. Through meshing, the gear 7 on the connecting pipe 5 rotates, thereby driving the connecting pipe 5, the first air pipe 3, and the second air pipe 4 to rotate. The thread direction of the first air pipe 3 and the second air pipe 4 is opposite to their own rotation direction to ensure stability. In addition, the position of the bushing 11 and the L-shaped plate 12 is fixed, preventing the second air pipe 4 from moving to the right. During the rotation of the first air pipe 3 and the second air pipe 4, the two rubber sleeves 9 are driven to rotate. The diameter of the rubber sleeves 9 is smaller than the diameter of the first air pipe 3 and the second air pipe 4. The two rubber sleeves 9 are fixed to the outer wall of the first air pipe 3 and the second air pipe 4 through their own elastic expansion. When the two rubber sleeves 9 rotate, they drive multiple nylon... The brush 10 rotates in the opposite direction to the impression cylinder 2 (the reverse force generated by the nylon brush 10 is insufficient to cause the carton to deviate compared to the squeezing and conveying force generated by the impression cylinder 2). After the nylon brush 10 contacts the printed surface of the carton, it cleans the printed surface. In conjunction with the operation of the dust removal fan, the suction pipe and rotary joint 8 create a suction process in the connecting pipe 5, generating negative pressure in the first air pipe 3 and the second air pipe 4. During the cleaning process, dust or particles are drawn out through multiple slotted holes 15. The dust is drawn away and filtered through the filter element installed at the air inlet of the dust collector fan. When replacing the nylon brushes 10 on the two rubber sleeves 9, rotate the locking cap 14 to release the position fixation of the threaded post 13 and the L-shaped plate 12, move the L-shaped plate 12 and the bushing 11 away from the right end of the second air pipe 4, and then rotate the second air pipe 4 to disengage it from the right end of the first air pipe 3. Then, the two rubber sleeves 9 can be pulled out from the outer wall of the first air pipe 3 and the second air pipe 4 respectively to facilitate the replacement of the nylon brushes 10.

[0031] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the geared motor and electric push rod 16 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by technical personnel based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that this hardware structure improvement can achieve, based on common knowledge.

[0032] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller paper handling device for color carton printing, comprising a frame (1), characterized in that, The inner wall of the frame (1) is rotatably connected to an impression cylinder (2) and a first air pipe (3). One end of the first air pipe (3) is threadedly connected to a second air pipe (4). The other end of the first air pipe (3) is fixedly connected to a connecting pipe (5). One end of the impression cylinder (2) is fixedly connected to a drive shaft (6). Gears (7) are fixedly fitted on the outer walls of both the connecting pipe (5) and the drive shaft (6). The two gears (7) are meshed together. One end of the connecting pipe (5) is fixedly connected to a rotary joint (8). The outer wall of the rotary joint (8) is fixedly connected to an air extraction pipe, and one end of the air extraction pipe is fixedly connected to a dust removal fan. The outer walls of the first air pipe (3) and the second air pipe (4) are both fitted with rubber sleeves (9). Multiple nylon brushes (10) are evenly fixedly connected to the outer walls of the two rubber sleeves (9). A limiting component is provided at one end of the second air pipe (4). Multiple strip holes (15) are evenly opened on the outer walls of the first air pipe (3) and the second air pipe (4). A guide component is provided at the bottom of the impression roller (2).

2. The roller paper handling device for color carton printing according to claim 1, characterized in that, The limiting assembly includes a bushing (11), one end of the second air pipe (4) is rotatably connected to the inner wall of the bushing (11), an L-shaped plate (12) is fixedly connected to the outer wall of the bushing (11), a threaded column (13) is fixedly connected to the top of the L-shaped plate (12), and a locking cap (14) is threadedly connected to the outer wall of the threaded column (13).

3. The roller paper handling device for color carton printing according to claim 1, characterized in that, The guiding assembly includes a conveying guide plate (17), a U-shaped frame is fixedly connected to the bottom of the frame (1), an electric push rod (16) is fixedly connected inside the U-shaped frame, and the top of the output end of the electric push rod (16) is fixedly connected to the bottom of the conveying guide plate (17).

4. The roller paper handling device for color carton printing according to claim 1, characterized in that, The outer wall of the frame (1) has two through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the connecting pipe (5) and the drive shaft (6), respectively.

5. The roller paper handling device for color carton printing according to claim 1, characterized in that, The outer wall of the frame (1) is provided with a groove, and the inner wall of the groove is rotatably connected to the outer wall of the second air pipe (4).

6. The roller paper handling device for color carton printing according to claim 2, characterized in that, The outer wall of the frame (1) is provided with a rectangular groove, and the inner wall of the rectangular groove is slidably connected to the outer wall of the threaded column (13).

7. The roller paper handling device for color carton printing according to claim 3, characterized in that, The bottom of the frame (1) is provided with a circular hole, and the inner wall of the circular hole is slidably connected to the outer wall of the output end of the electric push rod (16).

Images