Carton board spraying assembly and printing press

Abstract

The utility model relates to printing equipment technical field, concretely is a carton board printing machine, especially a kind of carton board printing equipment for realizing efficient, accurate printing by automatic spraying and maintenance component, a kind of carton board spraying assembly, including rack and the support in the lower part of rack, the spraying assembly further includes lifting assembly, translation component, spraying component and maintenance component;The lifting assembly is set up in the both sides of rack, for driving the lifting of board frame along vertical direction, to adjust the height of spraying assembly and adapt to different thickness carton board;The translation component is set up on board frame, for driving spraying component horizontal movement, to adjust the spraying position and adapt to different width carton board;The spraying component includes spray head and ink cartridge, spray head is arranged towards below for spraying operation;The maintenance component is set below rack, for cleaning and snap-fit protection to spray head.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically, to a carton board printing machine, and more particularly to a carton board printing equipment that achieves efficient and precise printing through automated spraying and curing components. Background Technology

[0002] In the field of cardboard printing, traditional printing equipment typically employs a simple conveying and spraying structure to achieve basic decorative treatment of the cardboard. However, compared to the cardboard printing machine described in this embodiment, the existing technology has the following problems and disadvantages: 1. Poor adaptability: Existing equipment often lacks flexible adjustment mechanisms for height and horizontal position, making it unable to automatically adapt to cardboard boxes of different thicknesses and widths. For example, during the spraying process, manual adjustment of equipment parameters is required when the size of the cardboard box changes, resulting in low printing efficiency, unstable accuracy, and a high risk of defective products due to untimely adjustments.

[0003] 2. Insufficient printhead maintenance: In existing technologies, printheads are prone to clogging or damage due to paint residue after long-term use, but there is a lack of effective automatic maintenance systems. Regular manual cleaning is usually required, which is not only inefficient but can also shorten printhead lifespan due to improper operation, increasing maintenance costs and downtime.

[0004] These drawbacks limit the automation and reliability of corrugated board printing presses. This invention aims to solve these problems through innovative design. Utility Model Content

[0005] To overcome the problems of poor adaptability of existing carton board printing machines, which cannot automatically adjust to adapt to carton boards of different thicknesses and widths, and insufficient printhead maintenance with a lack of automatic maintenance system, making them prone to clogging and damage, this utility model provides a carton board spraying assembly and printing machine. By adjusting the spraying position through lifting and translation components, combined with the automatic cleaning of the maintenance component and the negative pressure adsorption of the conveying assembly, high-precision spraying that adapts to the size of the carton board is achieved, while extending the service life of the printhead and reducing maintenance costs.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a cardboard coating assembly, including a frame and a plate frame supported at the bottom of the frame. The coating assembly further includes a lifting component, a translation component, a coating component, and a curing component. The lifting component is disposed on both sides of the frame and is used to drive the plate frame to move up and down in the vertical direction to adjust the height of the coating assembly to adapt to cardboard of different thicknesses. The translation component is disposed on the plate frame and is used to drive the coating component to move horizontally to adjust the coating position to adapt to cardboard of different widths. The coating component includes a nozzle and an ink cartridge, with the nozzle facing downward for coating operation. The curing component is disposed below the frame and is used to clean and fasten the nozzle for protection.

[0007] The aforementioned cardboard coating assembly includes a lifting component comprising a motor, a screw, a screw sleeve, and a slide rail. The slide rail is vertically fixed to the inside of the frame, and the board frame is slidably connected to the slide rail via a slider. The motor drives the screw to rotate, causing the screw sleeve to drive the board frame to move linearly up and down along the slide rail.

[0008] The aforementioned cardboard coating assembly includes a translation component comprising a motor, a screw, a screw sleeve, and a slide rail. The slide rail is symmetrically arranged in the width direction inside the board frame. The hanger is slidably connected to the slide rail via a slider. The motor drives the screw to rotate, causing the screw sleeve to move the hanger horizontally.

[0009] The aforementioned cardboard coating assembly further includes a frame and a plate. The frame is fixed below the hanger, and the nozzles are spaced apart inside the frame. The plate is electrically connected to the nozzles and controls the opening and closing of the nozzles.

[0010] The above-mentioned cardboard spraying assembly includes a curing component comprising a rail frame, a motor, a plate frame, and a cap. The rail frame is fixed below the machine frame, and the plate frame is slidably connected to the slide rail via a slider. The motor drives the plate frame to move, causing the cap to engage or disengage from the spray head.

[0011] The above-mentioned cardboard coating assembly, the curing component further includes a feeding roller, a receiving roller and a friction roller, with non-woven fabric wound between the feeding roller and the receiving roller for wiping the surface of the spray nozzle.

[0012] The aforementioned cardboard coating assembly employs digital inkjet technology, with the inkjet timing and position of the printhead controlled by a circuit board.

[0013] In the aforementioned cardboard coating assembly, the motor of the lifting component drives two screws to rotate synchronously via a synchronous belt, and the synchronous belt is equipped with a tensioning pulley.

[0014] A printing machine includes a conveyor assembly and the aforementioned spraying assembly. The spraying assembly is horizontally arranged above the conveyor assembly and is used to spray cardboard passing below it. The conveyor assembly adopts a belt conveyor method and includes a negative pressure adsorption device, which uses negative pressure to attach the cardboard to the surface of the conveyor belt, ensuring stable linear movement of the cardboard during the spraying process.

[0015] In the aforementioned printing press, the negative pressure adsorption device of the conveyor assembly is connected to a vacuum pump, and multiple negative pressure adsorption holes are opened on the surface of the conveyor belt.

[0016] The beneficial effects of this utility model are: 1. Through the coordinated action of the lifting and translation components, the spraying position can be automatically adjusted to adapt to cardboard of different thicknesses and widths, thereby improving the adaptability and accuracy of printing.

[0017] 2. The automatic cleaning and locking protection functions of the maintenance components can effectively prevent nozzle clogging and damage, extend nozzle life, and reduce maintenance costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the embodiments and examples.

[0019] Figure 1 This is a three-dimensional structural diagram of the spraying assembly.

[0020] Figure 2 This is a side view of the spraying assembly.

[0021] Figure 3 This is a top view of the spraying assembly.

[0022] Figure 4 This is a front view structural diagram of the spraying assembly.

[0023] Figure 5 This is a schematic diagram of a portion of the lifting assembly of the spraying assembly.

[0024] Figure 6 This is a schematic diagram of another part of the lifting assembly of the spraying assembly.

[0025] Figure 7 This is a schematic diagram of a portion of the translation component of the spraying assembly.

[0026] Figure 8 This is a schematic diagram of another part of the translation component of the spraying assembly.

[0027] Figure 9 This is a schematic diagram of the spraying component structure of the spraying assembly.

[0028] Figure 10 This is a schematic diagram of a portion of the maintenance components of the spraying assembly.

[0029] Figure 11 This is a schematic diagram of another part of the maintenance components of the spraying assembly.

[0030] Figure 12 This is a schematic diagram of the friction roller structure of the spraying assembly.

[0031] Figure 13 This is a schematic diagram of the spraying assembly and conveying assembly of a printing press.

[0032] In the diagram: 1. Frame; 2. Plate frame; 3. Lifting assembly; 31. First motor; 32. First screw; 33. First screw sleeve; 34. First slider; 35. First slide rail; 4. Translation assembly; 41. Second motor; 42. Second screw; 43. Second screw sleeve; 44. Second slider; 45. Second slide rail; 46. Hanger; 47. Roller; 48. Wheel rail; 5. Spraying assembly; 51. Frame; 52. Plate; 53. Printhead; 54. Ink cartridge; 6. Curing assembly; 61. Rail frame; 62. Third motor; 63. Clamping plate; 64. Third slide rail; 65. Third slider; 66. Plate frame; 67. Cap; 68. Housing; 69. Friction roller; 7. Conveying assembly. Detailed Implementation

[0033] In this embodiment, the cardboard printing machine consists of a spraying assembly and a conveying assembly 7 working together to achieve automated linear conveying and decorative spraying of the cardboard. Figure 1-13 As shown, the spraying assembly is horizontally arranged above the conveying assembly 7 to spray the cardboard passing below it. During the spraying process, the height and horizontal position of the spraying assembly 5 are adjusted by the lifting component 3 and the translation component 4 to adapt to cardboard of different thicknesses and widths. The conveying assembly 7 adopts a belt conveying method, which uses negative pressure adsorption to attach the cardboard to the surface of the conveyor belt to ensure its stable linear movement. The spraying assembly is based on the frame 1 as the basic support structure. The top of the frame 1 has a horizontal plate frame 2, and multiple spraying assemblies 5 are arranged side by side at the bottom of the plate frame 2. Lifting components 3 are set on both sides of the frame 1, and translation components 4 are set on the top of the frame 1 to realize the vertical lifting and horizontal movement of the plate frame 2. The upper part of the frame 1 is also equipped with a maintenance component 6 for cleaning and fastening protection of the spray nozzle 53.

[0034] The lifting assembly 3 consists of a first motor 31, a first screw 32, a first screw sleeve 33, a first slider 34, and a first slide rail 35. The first slider 34 is symmetrically arranged on both sides of the width direction of the plate frame 2 and is connected to the plate frame 2 by bolts. The first slide rail 35 is vertically fixed to the inside of the frame 1 and is adapted to the first slider 34 to guide the longitudinal displacement of the plate frame 2. The first screw sleeve 33 is symmetrically arranged on both sides of the plate frame 2 and is engaged with the vertically arranged first screw 32. The first motor 31 drives the two first screws 32 to rotate synchronously through a synchronous belt (the tension of the synchronous belt is adjusted by a tensioning wheel), so that the first screw sleeve 33 drives the plate frame 2 to move linearly up and down along the first slide rail 35. By controlling the rotation direction and number of rotations of the first motor 31, the height of the plate frame 2 can be precisely adjusted to accommodate cardboard of different thicknesses.

[0035] The translation component 4 consists of a second motor 41, a second screw 42, a second screw sleeve 43, a second slider 44, a second slide rail 45, a bracket 46, and rollers 47. The second slide rail 45 is symmetrically arranged in the width direction inside the frame 2. The bracket 46 is slidably connected to the second slide rail 45 through the second slider 44. The second screw 42 is arranged side by side with the second slide rail 45 and is fixed to the frame 2 at both ends by bearing seats. The second screw sleeve 43 is fixed to the upper part of the bracket 46 and meshes with the second screw 42. The second motor 41 drives the second screw 42 to rotate through a coupling, so that the second screw sleeve 43 drives the bracket 46 to move horizontally. Multiple sets of rollers 47 are arranged on the upper surface of both ends of the bracket 46, which roll in cooperation with the wheel rail 48 on the upper part of the frame 2 to improve the anti-fall capability of the bracket 46. By controlling the rotation of the second motor 41, the bracket 46 and the spraying component 5 below it can be driven to move horizontally to adapt to cardboard boards of different widths.

[0036] The spraying assembly 5 includes a frame 51, a circuit board 52, a printhead 53, and ink cartridges 54. The frame 51 is fixed to the bottom of the bracket 46 by bolts. Ink cartridges 54 are arranged on both sides along its length. The printheads 53 are arranged horizontally at intervals inside the lower part of the frame 51 with the outlet facing downwards. The circuit board 52 is arranged horizontally inside the upper part of the frame 51 and is electrically connected to the printheads 53 to control the opening and closing of the printheads 53. The ink cartridges 54 are connected to the printheads 53 through hoses to provide spraying pigments. The spraying assembly 5 adopts digital inkjet technology and controls the inkjet timing and position of the printheads 53 through the circuit board 52 to achieve high-precision decorative spraying.

[0037] The maintenance component 6 consists of a rail frame 61, a third motor 62, a clamping plate 63, a third slide rail 64, a third slider 65, a plate frame 66, caps 67, and a housing 68. The rail frame 61 is fixed below the machine frame 1, and the third slide rail 64 is arranged on its upper part. The plate frame 66 is slidably connected to the third slide rail 64 through the third slider 65. Multiple caps 67, which are adapted to the printheads 53, are arranged at intervals on the upper part. The third motor 62 drives the plate frame 66 to move along the third slide rail 64 through a belt and the clamping plate 63, so that the caps 67 are engaged with the printheads 53 when the printing machine is not in use, preventing dust or impurities from entering the printhead. The head 53 and the housing 68 are fixed to one side of the plate frame 66. Inside, a feeding roller, a receiving roller, and a friction roller 69 are arranged. Non-woven fabric is wound between the feeding roller and the receiving roller. The friction roller 69 (a rigid metal shaft covered with a flexible rubber sleeve) supports the non-woven fabric. The fourth motor drives the receiving roller to rotate and roll up the non-woven fabric that has been wiped on the nozzle 53, so as to prevent the paint from clogging the nozzle 53 or dripping onto the conveying assembly 7 after drying. During cleaning, the plate frame 66 moves to below the nozzle 53. The non-woven fabric adheres tightly to the surface of the nozzle 53 under the action of the friction roller 69. The receiving roller is driven by the fourth motor to achieve continuous wiping of the non-woven fabric.

[0038] The conveyor assembly 7 adopts a belt conveyor method. The surface of the conveyor belt is arranged with negative pressure adsorption holes. A vacuum pump generates negative pressure to tightly adhere the cardboard to the surface of the conveyor belt, preventing it from shifting or jumping during the spraying process and ensuring stable linear motion.

[0039] Overall workflow: The conveyor assembly 7 uses negative pressure adsorption to fix the cardboard to the surface of the conveyor belt and linearly conveys it to the bottom of the spraying assembly. According to the thickness of the cardboard, the lifting component 3 adjusts the height of the board frame 2. According to the width of the cardboard, the translation component 4 drives the hanging frame 46 and the spraying component 5 to move horizontally. The spraying component 5 controls the printhead 53 to spray ink through the board 52 to complete the decoration spraying. When the printing machine is idle, the cap 67 of the maintenance component 6 fastens the printhead 53. Periodically or as needed, the surface of the printhead 53 is wiped with a non-woven cloth to clean the residual paint.

[0040] The carton board printing machine in this embodiment achieves efficient and precise automated spraying through the coordinated operation of the spraying assembly and the conveying assembly 7. At the same time, the maintenance component 6 extends the service life of the nozzle 53 and reduces maintenance costs.

Claims

1. A cardboard coating assembly, comprising a frame and a board frame supported at the lower part of the frame, characterized in that: The spraying assembly also includes a lifting component, a translation component, a spraying component, and a curing component. The lifting component is located on both sides of the frame and is used to drive the board frame to move up and down vertically to adjust the height of the spraying assembly to accommodate cardboard of different thicknesses. The translation component is located on the board frame and is used to drive the spraying component to move horizontally to adjust the spraying position to accommodate cardboard of different widths. The spraying component includes a nozzle and an ink cartridge, with the nozzle facing downwards for spraying operations. The curing component is located below the frame and is used to clean and secure the nozzle.

2. The cardboard coating assembly according to claim 1, characterized in that: The lifting assembly includes a motor, a screw, a screw sleeve, and a slide rail. The slide rail is vertically fixed to the inside of the frame. The plate frame is slidably connected to the slide rail via a slider. The motor drives the screw to rotate, causing the screw sleeve to drive the plate frame to move linearly up and down along the slide rail.

3. The cardboard coating assembly according to claim 1, characterized in that: The translation component includes a motor, a screw, a screw sleeve, and a slide rail. The slide rail is symmetrically arranged in the width direction inside the plate frame. The hanger is slidably connected to the slide rail via a slider. The motor drives the screw to rotate, causing the screw sleeve to move the hanger horizontally.

4. The cardboard coating assembly according to claim 1, characterized in that: The spraying assembly also includes a frame and a plate. The frame is fixed below the hanger, and the spray nozzles are arranged at intervals inside the frame. The plate is electrically connected to the spray nozzles and controls the opening and closing of the spray nozzles.

5. The cardboard coating assembly according to claim 1, characterized in that: The maintenance component includes a rail frame, a motor, a plate frame, and a cap. The rail frame is fixed below the machine frame, and the plate frame is slidably connected to the slide rail via a slider. The motor drives the plate frame to move, causing the cap to engage or disengage from the nozzle.

6. The cardboard coating assembly according to claim 5, characterized in that: The maintenance assembly also includes a feed roller, a take-up roller, and a friction roller. Non-woven fabric is wound between the feed roller and the take-up roller for wiping the nozzle surface.

7. The cardboard coating assembly according to claim 1, characterized in that: The spraying assembly uses digital inkjet technology, and the timing and position of inkjet printing from the printhead are controlled by a circuit board.

8. The cardboard coating assembly according to claim 2, characterized in that: The motor of the lifting assembly drives two screws to rotate synchronously via a synchronous belt, which is equipped with a tensioning pulley.

9. A cardboard printing machine, comprising a conveying assembly and a spraying assembly as described in claim 1, wherein the spraying assembly is horizontally arranged above the conveying assembly for spraying cardboard passing below it, characterized in that: The conveyor assembly adopts a belt conveyor method and includes a negative pressure adsorption device, which uses negative pressure to attach the cardboard to the surface of the conveyor belt, ensuring that the cardboard moves stably and linearly during the spraying process.

10. The cardboard printing machine according to claim 9, characterized in that: The negative pressure adsorption device of the conveyor assembly is connected to a vacuum pump, and multiple negative pressure adsorption holes are opened on the surface of the conveyor belt.

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