Printing equipment for packaging carton processing

Abstract

The invention discloses printing equipment for packaging carton processing, and relates to the technical field of packaging carton printing, the printing equipment comprises a machine body, a conveying belt used for conveying cartons is erected above the machine body, a vertical column is fixedly arranged on the top surface of the machine body, and a transverse adjusting assembly and a printing assembly are arranged on a supporting plate; material separating assemblies are symmetrically arranged on the left side and the right side of the printing assembly, the drying assembly comprises a drying box, and an infrared radiation plate on the top face in the drying box corresponds to the conveying face of the conveying belt. Through the integrated conveying, printing and drying structure, the processing efficiency and the printing quality are remarkably improved, continuous conveying of cartons is achieved through the conveying belt, the cartons can directly enter a drying box of the drying assembly after printing is completed, printed patterns can be rapidly dried and cured through an infrared radiation plate, and the printing quality is improved. And the problem of pattern blurring or rubbing caused by the fact that the printing solution is not dry is avoided, additional transferring and drying procedures are not needed, and the processing period is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging carton printing technical field, and in particular to a printing device for packaging carton processing. BACKGROUND

[0002] As the core carrier of modern logistics and commodity packaging, the patterns, characters and marks printed on the surface of the packaging carton are of great importance to brand display, product information and logistics management. Therefore, the printing device can realize the rapid transfer and solidification of brand marks, product information, transportation marks and decorative patterns, and is the pivotal link connecting design and finished product in modern packaging industry.

[0003] The existing packaging carton printing mostly adopts single-station or assembly line step-by-step operation mode, and the cartons are fed and discharged one by one and printed one by one. Such single-piece operation mode has low production efficiency and is difficult to adapt to mass production and fast-paced production requirements. In addition, the traditional printing and drying links are often separated, and the printed cartons need to be transferred to an independent drying area by manual or auxiliary equipment. This not only increases the process connection time and labor cost, but also easily causes quality problems such as pattern smearing, sticking or blurring due to the fact that the ink is not dry during the transfer process, which seriously affects the product qualification rate and appearance consistency.

[0004] For example, a packaging carton watermark printing device with the publication number CN111619209A includes a box shell, a moving base plate, a printing frame, a lifting clamping table and a moving connecting plate. The moving base plate is movably installed above the box shell, and two groups of sliding clamping seats are fixedly installed on the upper end outer surface of the box shell. The moving base plate and the box shell are movably connected through the sliding clamping seats. A fixed buckle is fixedly installed on the front end outer surface of the moving base plate, and three groups of elastic buckles are movably sleeved on the rear end inner side of the moving base plate. The moving base plate and the elastic buckles are movably connected through spring pins. Side swivel casters are movably installed on the outer surfaces of the two sides of the moving base plate. The lifting clamping table is fixedly installed on the upper end of the box shell near one side of the group of sliding clamping seats. This patent adopts a single-station operation mode, and only a single carton can be processed at a time, so the production efficiency is limitedly improved. At the same time, there is no integrated online drying module, and the printed cartons still need to rely on external drying procedures, which cannot avoid the quality risks in the transfer process.

[0005] Therefore, it is necessary to invent a printing device for packaging carton processing to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a printing device for packaging carton processing to solve the problems of low production efficiency, unstable printing quality, poor process connection and low automation degree in the above-mentioned technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a printing device for processing packaging cartons, comprising a machine body, a conveyor belt for conveying cartons mounted above the machine body, a column fixed to the top surface of the machine body, a top plate fixed to the top of the column, a driving assembly mounted on the top plate, the driving assembly being driven to drive a support plate to move up and down along the column, a lateral adjustment assembly and a printing assembly mounted on the support plate, the lateral adjustment assembly being driven to drive a printing squeegee within the printing assembly to drive the printing squeegee to move along the solution frame of the printing assembly, symmetrically arranged material separating assemblies on the left and right sides of the printing assembly, the material separating assemblies being able to limit and position the cartons on the conveyor belt, a drying assembly mounted above the conveyor belt, the drying assembly including a drying chamber, and an infrared radiation plate on the top surface inside the drying chamber being arranged corresponding to the conveyor belt conveying surface.

[0008] Preferably, the driving component is a cylinder, which is vertically installed at the center of the top surface of the top plate, and its output end is connected to the center of the top surface of the support plate. The support plate is slidably engaged with four rectangularly distributed columns through four corner sliding sleeves.

[0009] Preferably, the lateral adjustment assembly includes a hydraulic cylinder and a hydraulic rod, which are arranged sequentially along the front-rear direction of the top surface of the support plate.

[0010] Preferably, the hydraulic cylinder is vertically upward, with its output end fixed to a horizontal plate. A horizontal bar is arranged parallel below the horizontal plate, and the two ends of the top surface of the horizontal bar are slidably engaged with the horizontal plate through connecting rods. A spring is sleeved on the outer periphery of the connecting rod, and the two ends of the spring abut against the bottom surface of the horizontal plate and the top surface of the horizontal bar, respectively.

[0011] Preferably, the hydraulic rod is horizontally positioned, and its output end is fixedly connected to the side wall of the hydraulic cylinder via a connecting plate.

[0012] Preferably, the printing assembly includes a solution frame, which is fixed to the side wall of the support plate, and the solution frame is a box structure with an open top.

[0013] Preferably, the printing scraper is horizontally embedded inside the solution frame and fixed to the bottom surface of the crossbar, and the three sets of printing die holes are evenly opened on the bottom surface of the solution frame along the conveyor belt conveying direction.

[0014] Preferably, the material separating assembly includes a mounting plate, a rotating rod, a servo motor, a fixed rod, a gear, a connecting rod, a stop rod, and a limiting rod. The mounting plate is vertically fixed to the top surface of the machine body, the servo motor is mounted on the outer wall of the mounting plate, one end of the rotating rod is connected to the output end of the servo motor, and the other end rotates through the mounting plate.

[0015] Preferably, the fixing rod is horizontally fixed to the inner side wall of the mounting plate and located below the rotating rod, the gear is rotatably mounted on the side wall of the fixing rod, one end of the rotating rod is hinged to the gear through a connecting rod, the stop rod is horizontally arranged below the fixing rod, and a rack is fixedly mounted on its side wall along the length direction, and the rack meshes with the gear for transmission.

[0016] Preferably, there are two limiting rods, which are vertically fixed to the side wall of the mounting plate, and the two ends of the baffle rod slide through the two limiting rods respectively.

[0017] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. This invention, through the coordinated operation of symmetrically arranged material separating components and conveyor belts, can accurately separate and position three packaging cartons at equal intervals in the printing station. The baffle rods in the material separating components can be precisely extended and retracted according to instructions to intercept and release the cartons conveyed on the conveyor belt in batches, ensuring that three cartons are precisely aligned below the solution frame each time. This design breaks through the traditional single-sheet or disordered feeding mode, provides a stable material foundation for batch synchronous printing, and greatly improves the cycle time and continuity of equipment operation. 2. This invention achieves a highly efficient "one plate, three prints" operation mode through the linkage design of the printing component and the lateral adjustment component. Specifically, the support plate drives the solution frame to rise and fall as a whole, and the bottom surface of the solution frame has three sets of printing mold holes along the conveying direction, which correspond exactly to the three cartons positioned below. When the drive component drives the printing squeegee to move laterally in the solution frame, the ink can be evenly scraped across the three sets of mold holes, so that the pattern transfer of the three cartons can be completed simultaneously in one printing stroke. This increases the output of a single operation by three times, significantly reduces the energy consumption and time cost per unit product, and achieves a breakthrough improvement in production efficiency. 3. This invention significantly improves processing efficiency and printing quality by integrating conveying, printing and drying into a single structure. The conveyor belt enables continuous transport of cartons, and after printing, the cartons can directly enter the drying chamber of the drying component. The infrared radiation plate can quickly dry and solidify the printed pattern, avoiding problems such as blurred or smudged patterns caused by undried printing solution. No additional transfer and drying process is required, thus shortening the processing cycle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall front structure of the present invention; Figure 3 This is a top view of the overall structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the printing component of the present invention; Figure 5 This is a three-dimensional structural diagram of the hydraulic rod of the present invention; Figure 6 This is a three-dimensional structural diagram of the separator assembly of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the gear and rack of the present invention; Figure 8 This is a three-dimensional structural diagram of the drying component of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Machine body; 2. Conveyor belt; 3. Column; 4. Top plate; 5. Cylinder; 6. Support plate; 7. Hydraulic cylinder; 8. Horizontal plate; 9. Crossbar; 10. Connecting rod; 11. Printing assembly; 1101. Solution frame; 1102. Printing scraper; 1103. Printing die hole; 12. Hydraulic rod; 13. Material separating assembly; 1301. Mounting plate; 1302. Rotating rod; 1303. Servo motor; 1304. Fixing rod; 1305. Gear; 1306. Connecting rod; 1307. Material stop rod; 1308. Rack; 1309. Limiting rod; 14. Drying assembly; 1401. Drying box; 1402. Infrared radiation plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0021] This invention provides, for example Figures 1-8 The printing equipment for processing packaging cartons shown includes a machine body 1, a conveyor belt 2 for conveying cartons is mounted on top of the machine body 1, a column 3 is fixed on the top surface of the machine body 1, a top plate 4 is fixed to the top of the column 3, a drive assembly is mounted on the top plate 4, the drive assembly is connected to a support plate 6 and drives it to move up and down along the column 3, a lateral adjustment assembly and a printing assembly 11 are mounted on the support plate 6, the lateral adjustment assembly is connected to a printing squeegee 1102 in the printing assembly 11 and drives the printing squeegee 1102 to move along the solution frame 1101 in the printing assembly 11, a separating assembly 13 is symmetrically arranged on the left and right sides of the printing assembly 11, the separating assembly 13 can realize the limiting and positioning of cartons on the conveyor belt 2, a drying assembly 14 is mounted on top of the conveyor belt 2, the drying assembly 14 includes a drying box 1401, and an infrared radiation plate 1402 on the top surface of the drying box 1401 is arranged corresponding to the conveying surface of the conveyor belt 2.

[0022] The drying component 14 provided in this embodiment has the core function of achieving immediate online curing after printing. The infrared radiation generated by the infrared radiation plate 1402 can directly and efficiently act on the printed surface of the carton that has just been printed and is still on the conveyor belt 2, so that the water or solvent in the ink evaporates quickly and the resin cross-links and cures rapidly. This "print and dry" layout effectively avoids the printed pattern from getting smudged, sticking or blurring during subsequent movement and stacking. It is a key link to ensure the quality of the final printed product and achieve continuous high-speed production.

[0023] The driving component is a cylinder 5, which is vertically installed at the center of the top surface of the top plate 4. Its output end is connected to the center of the top surface of the support plate 6. The support plate 6 is slidably engaged with four rectangularly distributed columns 3 through four corner sliding sleeves. The horizontal adjustment component includes a hydraulic cylinder 7 and a hydraulic rod 12. The hydraulic cylinder 7 and the hydraulic rod 12 are arranged sequentially along the front-back direction of the top surface of the support plate 6. The hydraulic cylinder 7 is set vertically upward, and its output end is fixed to the horizontal plate 8. A horizontal bar 9 is arranged parallel below the horizontal plate 8. The two ends of the top surface of the horizontal bar 9 are slidably engaged with the horizontal plate 8 through connecting rods 10. A spring is sleeved on the outer periphery of the connecting rod 10, and the two ends of the spring abut against the bottom surface of the horizontal plate 8 and the top surface of the horizontal bar 9, respectively. The hydraulic rod 12 is set horizontally, and its output end is fixedly connected to the side wall of the hydraulic cylinder 7 through a connecting plate.

[0024] In this embodiment, cylinder 5 serves as the main drive, responsible for lifting and lowering the entire printing unit. The floating mechanism, composed of hydraulic cylinder 7 and spring, provides stable and elastic downward pressure during printing. Hydraulic cylinder 7 provides the main pressure, while spring absorbs the impact of small fluctuations in conveyor belt 2, ensuring uniform printing pressure and preventing crushing of cartons or unclear printing. Hydraulic rod 12 drives the entire floating mechanism and printing squeegee 1102 to perform lateral reciprocating motion, thereby completing the ink scraping action. The cooperation between column 3 and sliding sleeve ensures the rigidity and precision of all movements.

[0025] The printing assembly 11 includes a solution frame 1101, which is fixedly mounted on the side wall of the support plate 6. The solution frame 1101 is a box structure with an open top. The printing squeegee 1102 is horizontally embedded inside the solution frame 1101 and fixedly connected to the bottom surface of the crossbar 9. Three sets of printing die holes 1103 are evenly opened on the bottom surface of the solution frame 1101 along the conveying direction of the conveyor belt 2.

[0026] In this embodiment, the core function of synchronous multi-station printing is achieved by using the solution frame 1101 as an ink container. The three sets of printing die holes 1103 at the bottom of the solution frame 1101 are key designs. They correspond one-to-one with the three cartons positioned on the conveyor belt 2. When the lateral adjustment component drives the printing squeegee 1102 to move laterally within the solution frame 1101, it evenly scrapes the ink across the three sets of printing die holes 1103. Under pressure, the ink passes through the printing die holes 1103 and is simultaneously printed on specific positions of the three cartons below. This design enables the synchronous printing of three cartons to be completed in a single ink scraping action, theoretically increasing production efficiency to three times that of a single-station device.

[0027] The material separating assembly 13 includes a mounting plate 1301, a rotating rod 1302, a servo motor 1303, a fixing rod 1304, a gear 1305, a connecting rod 1306, a stop rod 1307, and a limiting rod 1309. The mounting plate 1301 is vertically fixed to the top surface of the machine body 1. The servo motor 1303 is mounted on the outer wall of the mounting plate 1301. One end of the rotating rod 1302 is connected to the output end of the servo motor 1303, and the other end rotates through the mounting plate 1301. The fixing rod 1304 is horizontally fixed to the inner side of the mounting plate 1301. The wall is located below the rotating rod 1302. The gear 1305 is rotatably mounted on the side wall of the fixed rod 1304. One end of the rotating rod 1302 is hinged to the gear 1305 through the connecting rod 1306. The stop rod 1307 is horizontally set below the fixed rod 1304. A rack 1308 is fixedly installed on its side wall along the length direction. The rack 1308 meshes with the gear 1305 for transmission. There are two limit rods 1309 and they are vertically fixed to the side wall of the mounting plate 1301. The two ends of the stop rod 1307 slide through the two limit rods 1309 respectively.

[0028] In this embodiment, the actuator for precise batch feeding functions to group and position continuously fed cartons in a "three-by-three" system. The servo motor 1303 provides precise rotation control, driving the rotating rod 1302 to swing. The rotating rod 1302 drives the gear 1305 to rotate in both directions via the connecting rod 1306. The rotational motion of the gear 1305, through meshing with the rack 1308, is converted into the precise linear extension and retraction motion of the stop rod 1307. The limit rod 1309 ensures that the movement trajectory of the stop rod 1307 is straight and without wobbling. During operation, the stop rod 1307 extends to intercept subsequent cartons, allowing three cartons to enter the printing station precisely. After printing is completed, it retracts, releasing the three cartons in this batch and intercepting the next batch. This mechanical positioning method is stable and reliable, ensuring the precise consistency of the three cartons' positions during printing.

[0029] Working principle of this invention: Refer to the instruction manual appendix Figures 1-8When using this invention, first, start the equipment. The conveyor belt 2 starts to run at a constant speed. The operator places the blank cartons to be printed in sequence at the feed end of the conveyor belt 2. The cartons are conveyed forward by the conveyor belt 2. When the cartons are conveyed to the front of the printing station, the material separating components 13 symmetrically arranged on both sides of the printing component 11 start to work. The servo motor 1303 drives the rotating rod 1302 to swing. Through the connecting rod 1306, the gear 1305 is driven to rotate. The gear 1305 meshes with the rack 1308 on the baffle rod 1307, thereby precisely controlling the baffle rod 1307 to extend above the conveyor belt 2. The baffle rod 1307 intercepts the subsequent cartons, so that three cartons are just stuck on the front conveyor belt 2. At this time, the drive cylinder 5 is activated, and its piston rod extends downward, pushing the support plate 6 to descend smoothly along the four columns 3. The entire printing component 11 fixed on the support plate 6 descends accordingly until the bottom surface of the solution frame 1101 gently touches the surface of the three cartons that have been positioned below. After the printing component 11 is in place, the horizontal adjustment component starts to work. The vertically set hydraulic cylinder 7 is activated, pushing the horizontal plate 8 downward. Then, through the connecting rod 10 and the spring, the pressure is transmitted to the horizontal bar 9 and the printing squeegee 1102. The three printing stations can also obtain uniform and stable printing pressure. Subsequently, the horizontally set hydraulic rod 12 is activated, pushing the entire floating mechanism composed of hydraulic cylinder 7, horizontal plate 8, horizontal bar 9, etc., together with the printing squeegee 1102, to move laterally along the inside of the solution frame 1101. The printing squeegee 1102 evenly scrapes the ink across the three sets of printing die holes 1103 at the bottom of the solution frame 1101. Under the action of pressure, the ink passes through the three sets of printing die holes 1103 at the same time, transferring the pattern to the designated position on the three cartons below in one go and synchronously, realizing efficient batch printing. After the printing process is completed, the hydraulic rod 12 retracts, driving the printing squeegee 1102 to reset. Then, the hydraulic cylinder 7 retracts, releasing the printing pressure. Finally, the drive cylinder 5 retracts, lifting the entire printing assembly 11 to a high position and detaching it from the carton surface. At the same time, the baffle rod 1307 of the material separating assembly 13 retracts under the drive of the servo motor 1303, releasing the blockage. The three printed cartons are then conveyed to the next process by the conveyor belt 2, and the cartons that were blocked behind them immediately fill in the gaps, starting the next "three-three system" cycle. The three printed cartons continue forward on conveyor belt 2 and immediately enter the drying assembly 14 mounted above. The infrared radiation plate 1402 inside the drying chamber 1401 generates directional infrared radiation, which acts directly on the wet ink surface of the cartons, causing the moisture or solvent in the ink to evaporate rapidly and the resin to cross-link and cure quickly. This "print and dry" process effectively prevents the pattern from getting smudged, ensures printing quality, and provides conditions for possible subsequent direct stacking or packaging processes.

[0030] In this embodiment, the conveyor belt 2 is an existing product, so it will not be described in detail.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A printing device for processing packaging cartons, comprising a machine body (1), characterized in that: A conveyor belt (2) for conveying cartons is mounted above the machine body (1). A column (3) is fixed to the top surface of the machine body (1). A top plate (4) is fixed to the top of the column (3). A drive assembly is provided on the top plate (4). The drive assembly is connected to a support plate (6) and drives it to move up and down along the column (3). A horizontal adjustment assembly and a printing assembly (11) are provided on the support plate (6). The horizontal adjustment assembly is connected to the printing scraper (1102) in the printing assembly (11) to drive the printing process. The scraper (1102) moves along the solution frame (1101) of the printing component (11). The printing component (11) is symmetrically provided with material separation components (13) on the left and right sides. The material separation components (13) can realize the limiting and positioning of the carton on the conveyor belt (2). A drying component (14) is installed above the conveyor belt (2). The drying component (14) includes a drying box (1401), and the infrared radiation plate (1402) on the top surface inside the drying box (1401) is set to correspond to the conveying surface of the conveyor belt (2).

2. The printing equipment for processing packaging cartons according to claim 1, characterized in that: The driving component is a cylinder (5), which is vertically installed at the center of the top surface of the top plate (4). Its output end is connected to the center of the top surface of the support plate (6). The support plate (6) is slidably engaged with four rectangular columns (3) through four corner sliding sleeves.

3. The printing equipment for processing packaging cartons according to claim 1, characterized in that: The lateral adjustment assembly includes a hydraulic cylinder (7) and a hydraulic rod (12), which are arranged sequentially along the front-back direction of the top surface of the support plate (6).

4. The printing equipment for processing packaging cartons according to claim 3, characterized in that: The hydraulic cylinder (7) is set vertically upward, and its output end is fixed to the horizontal plate (8). A horizontal bar (9) is set parallel below the horizontal plate (8). The two ends of the top surface of the horizontal bar (9) are slidably engaged with the horizontal plate (8) through the connecting rod (10). A spring is sleeved on the outer periphery of the connecting rod (10), and the two ends of the spring abut against the bottom surface of the horizontal plate (8) and the top surface of the horizontal bar (9) respectively.

5. The printing equipment for processing packaging cartons according to claim 3, characterized in that: The hydraulic rod (12) is set horizontally, and its output end is fixed to the side wall of the hydraulic cylinder (7) through a connecting plate.

6. The printing equipment for processing packaging cartons according to claim 1, characterized in that: The printing assembly (11) includes a solution frame (1101), which is fixed to the side wall of the support plate (6) and has a box structure with an open top.

7. The printing equipment for processing packaging cartons according to claim 1, characterized in that: The printing scraper (1102) is horizontally embedded inside the solution frame (1101) and fixed to the bottom surface of the crossbar (9), and three sets of printing mold holes (1103) are evenly opened on the bottom surface of the solution frame (1101) along the conveying direction of the conveyor belt (2).

8. The printing equipment for processing packaging cartons according to claim 1, characterized in that: The material separation assembly (13) includes a mounting plate (1301), a rotating rod (1302), a servo motor (1303), a fixing rod (1304), a gear (1305), a connecting rod (1306), a material stop rod (1307), and a limiting rod (1309). The mounting plate (1301) is vertically fixed to the top surface of the machine body (1). The servo motor (1303) is installed on the outer wall of the mounting plate (1301). One end of the rotating rod (1302) is connected to the output end of the servo motor (1303) for transmission, and the other end rotates through the mounting plate (1301).

9. The printing equipment for processing packaging cartons according to claim 8, characterized in that: The fixed rod (1304) is horizontally fixed to the inner side wall of the mounting plate (1301) and located below the rotating rod (1302). The gear (1305) is rotatably mounted on the side wall of the fixed rod (1304). One end of the rotating rod (1302) is hinged to the gear (1305) through the connecting rod (1306). The stop rod (1307) is horizontally arranged below the fixed rod (1304). A rack (1308) is fixedly mounted on its side wall along the length direction, and the rack (1308) meshes with the gear (1305) for transmission.

10. A printing device for processing packaging cartons according to claim 9, characterized in that: The limiting rods (1309) are two in number and are vertically fixed to the side wall of the mounting plate (1301). The two ends of the baffle rod (1307) slide through the two limiting rods (1309).

Images