An ink mixing device for a carton printer

Abstract

This invention provides an ink mixing device for a packaging box printing machine, relating to the field of ink processing technology. The ink mixing device for the packaging box printing machine includes a mixing tank and a bottom tank; it also includes a drive motor, the output end of which is connected to a pressing mechanism and a reciprocating mechanism. The pressing end of the pressing mechanism is connected to a piston, which moves within a metering mechanism. An adjustment mechanism for metering is also provided on the outside of the metering mechanism. Inside the mixing tank, a stirring assembly and a scraper are provided for ink mixing. The stirring assembly and scraper are driven by the drive motor. The reciprocating end of the reciprocating mechanism is connected to a scraper ring for scraping the inner wall of the mixing tank. This invention achieves coordinated operation of metered ink delivery, efficient mixing, and automatic tank wall cleaning by simultaneously driving the pressing mechanism, stirring assembly, and reciprocating mechanism with a single drive motor, effectively reducing equipment energy consumption and structural complexity.

Description

Technical Field

[0001] This invention relates to the field of ink processing technology, specifically to an ink mixing device for a packaging box printing machine. Background Technology

[0002] Hybrid inks are a new type of ink formulated by mixing ordinary ink components with UV-curing materials. They combine general inks with UV curing technology, requiring one or more UV curing lamps to be installed on the printing press. This allows the ink to be printed on traditional sheet-fed printing presses, enabling UV varnishes to be quickly printed onto the hybrid ink and cured, resulting in a uniform, high-gloss finish. After mixing, the inks also need to be filtered to remove impurities and improve ink quality. Packaging boxes need to be printed with various patterns and text to indicate product information, such as product category, manufacturer, weight, price, production date, and distribution period.

[0003] Existing ink mixing equipment for packaging box printing machines still suffers from numerous technical shortcomings in practical applications. Firstly, traditional ink mixing equipment struggles to achieve precise proportions of various ink raw materials, leading to unstable ink quality and affecting printing results. Secondly, ink residue easily accumulates on the inner wall of the mixing tank, which not only affects the purity of subsequent inks but also increases the difficulty and cost of equipment cleaning and maintenance. Furthermore, the ink filtration stage is often independently set up from the mixing stage, resulting in complex equipment structures and inconvenient filter cleaning, impacting continuous production efficiency. More importantly, existing equipment often requires independent drive sources for each functional component, leading to high energy consumption, bulky structures, and difficulties in control and coordination, failing to meet the demands of the modern packaging box printing industry for efficient, energy-saving, and intelligent production. Therefore, there is an urgent need for an ink mixing device that can achieve precise proportioning, efficient mixing, automatic cleaning, and a compact structure to solve the aforementioned technical problems. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an ink mixing device for a packaging box printing machine, which solves the problems mentioned in the background section.

[0005] (II) Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solution: an ink mixing device for a packaging box printing machine, comprising a mixing tank and a bottom tank threadedly connected to the side wall of the mixing tank, wherein an electromagnetic discharge pipe is provided at the bottom of the bottom tank; It also includes a drive motor, the output end of which is connected to a pressing mechanism and a reciprocating mechanism. The pressing end of the pressing mechanism is connected to a piston, which moves within a metering mechanism. An adjustment mechanism for metering is also provided on the outside of the metering mechanism. The adjustment mechanism adjusts the amount of ink falling per unit time in the metering mechanism and is pressed into the mixing tank by the piston. The mixing tank is equipped with a stirring assembly and a scraper for mixing ink. The stirring assembly and scraper are driven by a drive motor. The reciprocating end of the reciprocating mechanism is connected to a scraper ring for scraping the inner wall of the mixing tank.

[0006] Preferably, a connecting frame is fixedly connected to the upper side of the mixing tank, and the drive motor is fixedly connected to the upper end of the connecting frame.

[0007] Preferably, the extrusion mechanism includes a connecting frame fixedly connected to the bottom of the connecting frame, a threaded rod fixedly connected to the output end of the drive motor is provided inside the connecting frame, a threaded block is threadedly connected to the outer wall of the threaded rod, three connecting rods are fixedly connected to the side wall of the threaded block, and a piston is fixedly connected to the bottom of each of the three connecting rods.

[0008] Preferably, the metering mechanism is provided in three sets, and each set includes a metering barrel. The bottom of the metering barrel is threadedly connected to a connecting barrel that penetrates the upper surface of the mixing barrel. The piston moves within the metering barrel. An upper metering plate is fixedly connected to the inner bottom of the metering barrel. A movable lower metering plate is provided at the bottom of the upper metering plate. Staggered perforations are provided between the upper and lower metering plates. The lower metering plate is adjusted laterally by an adjustment mechanism.

[0009] Preferably, the adjusting mechanism includes a fixed frame fixedly connected to the outside of the metering container. A scale knob is provided on the upper side of the fixed frame. The bottom of the scale knob extends through the interior of the fixed frame and is fixedly connected to a worm gear. A worm wheel is meshed with the side wall of the worm gear. A screw is fixedly connected to the middle of the worm wheel. A moving block is threadedly connected to the outer wall of the screw. A hollow rod is fixedly connected to one side of the moving block. The other end of the hollow rod extends through the interior of the metering container and is fixedly connected to the lower metering plate.

[0010] Preferably, a speed increaser is fixedly connected to the bottom of the threaded rod, and the output end of the speed increaser is connected to the stirring assembly.

[0011] Preferably, the reciprocating mechanism includes a speed reducer connected to the output end of the drive motor. A rotating rod is fixedly connected to the middle of the speed reducer. Both ends of the rotating rod are connected to a reciprocating screw through a bevel gear set. A scraper ring is threaded onto the outer wall of the reciprocating screw. The scraper ring fits against the inner wall of the mixing tank. A limit block is provided at the bottom of the reciprocating screw.

[0012] Preferably, a removable filter screen is provided between the mixing tank and the bottom tank, and the scraper is attached to the upper surface of the filter screen.

[0013] Preferably, the bottom of the bottom bucket is funnel-shaped, and support legs are provided at all four corners.

[0014] (III) Beneficial Effects This invention provides an ink mixing device for a packaging box printing machine, which has the following beneficial effects: 1. By using a single drive motor to simultaneously drive the extrusion mechanism, stirring assembly, and reciprocating mechanism, the system achieves coordinated operation of quantitative ink delivery, efficient mixing, and automatic barrel cleaning. This effectively reduces equipment energy consumption and structural complexity, and solves the control and coordination difficulties caused by multiple drive sources in traditional equipment. The extrusion mechanism converts rotary motion into linear reciprocating motion of the piston through the cooperation of the threaded rod and threaded block. Combined with the adjustable design of the staggered leakage holes of the upper and lower quantitative plates in the quantitative mechanism, the amount of ink falling per unit time can be controlled according to actual production needs. This ensures that various ink raw materials are stably mixed in the set ratio, significantly improving the consistency of mixed ink quality and the stability of printing effect.

[0015] 2. The reciprocating mechanism adopts a transmission design of reduction gear and bevel gear set, which converts the unidirectional continuous rotation of the drive motor into the periodic forward and reverse rotation of the reciprocating screw, thereby driving the scraper ring to perform a slow and reciprocating scraping motion along the inner wall of the mixing tank. Combined with the continuous cleaning of the filter screen surface by the scraper during the rotation of the stirring component, it realizes the real-time removal of residual ink on the inner wall of the mixing tank and the automatic cleaning of filter screen blockage. This effectively avoids the impact of ink residue on the purity of subsequent batches, reduces the frequency of equipment cleaning and maintenance and labor intensity, and ensures the smooth operation of continuous production.

[0016] 3. The quantitative mechanism adopts a three-set independently set quantitative barrel structure, which can hold different types of ink raw materials or additives. The mixing parameters can be adjusted independently through their respective adjustment mechanisms, which meets the complex formula requirements of multi-color inks or functional inks in packaging box printing. The adjustment mechanism utilizes the self-locking characteristics of worm gears and the intuitive indication of scale knobs, making quantitative adjustment operation simple and precise. After adjustment, it can remain stable without additional locking, preventing the mixing ratio drift caused by vibration during operation.

[0017] 4. The mixing tank and the bottom tank adopt a detachable structure with threaded connection. Combined with the removable filter screen between the two, the replacement and cleaning of the filter screen is more convenient. The funnel-shaped structure at the bottom of the bottom tank and the electromagnetic discharge pipe ensure complete discharge of ink after mixing and filtration and rapid response control. The support legs ensure the structural stability of the equipment during operation. The overall design is compact and highly integrated, which well meets the application needs of the modern packaging and printing industry for efficient, energy-saving and intelligent production equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a cross-sectional schematic diagram of the quantitative mechanism of the present invention; Figure 4 This is a cross-sectional schematic diagram of the adjustment mechanism of the present invention; Figure 5 This is a schematic diagram of the reciprocating mechanism of the present invention.

[0019] The components include: 1. Mixing tank; 2. Bottom tank; 3. Connecting frame; 4. Drive motor; 5. Extrusion mechanism; 6. Piston; 7. Metering mechanism; 8. Adjustment mechanism; 9. Reciprocating mechanism; 10. Connecting tank; 11. Speed ​​increaser; 12. Mixing assembly; 13. Scraper ring; 14. Scraper; 15. Filter screen; 16. Electromagnetic discharge pipe; 17. Support leg. 51. Connecting frame; 52. Threaded rod; 53. Threaded block; 54. Connecting rod; 71. Metering container; 72. Upper metering plate; 73. Lower metering plate; 81. Fixed frame; 82. Scale knob; 83. Worm gear; 84. Worm wheel; 85. Screw; 86. Moving block; 87. Hollow rod; 91. Reducer; 92. Rotating rod; 93. Bevel gear set; 94. Reciprocating lead screw; 95. Limit block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1:

[0022] like Figures 1 to 5As shown, this embodiment of the invention provides an ink mixing device for a packaging box printing machine, including a mixing tank 1 and a bottom tank 2 threadedly connected to the side wall of the mixing tank 1. An electromagnetic discharge pipe 16 is provided at the bottom of the bottom tank 2. The electromagnetic discharge pipe 16 is used to control the discharge of the ink after mixing and filtration, thereby realizing the automated control of the discharge process.

[0023] It also includes a drive motor 4, the output end of which is connected to a pressing mechanism 5 and a reciprocating mechanism 9. The pressing end of the pressing mechanism 5 is connected to a piston 6, which moves within a metering mechanism 7. An adjusting mechanism 8 for metering is also provided on the outside of the metering mechanism 7. The adjusting mechanism 8 regulates the amount of ink falling per unit time in the metering mechanism 7 and is pressed into the mixing tank 1 by the piston 6. The drive motor 4, as a single power source, achieves metered ink delivery, mixing, and tank wall cleaning functions simultaneously through reasonable transmission distribution, effectively simplifying the equipment structure and reducing energy consumption and maintenance costs.

[0024] The mixing tank 1 is equipped with a stirring assembly 12 and a scraper 14 for ink mixing. The stirring assembly 12 and the scraper 14 are driven by the drive motor 4. The reciprocating end of the reciprocating mechanism 9 is connected to a scraper ring 13 for scraping the inner wall of the mixing tank 1. The stirring assembly 12 rotates at high speed under the speed-increasing action of the speed increaser 11 to achieve efficient shearing and mixing of ink. The scraper 14 rotates synchronously with the stirring assembly 12 to continuously scrape the upper surface of the filter screen 15 to prevent impurities from accumulating and clogging. The scraper ring 13 moves up and down along the inner wall of the mixing tank 1 under the drive of the reciprocating mechanism 9 to remove ink residues adhering to the tank wall in real time.

[0025] like Figure 1 As shown, a connecting frame 3 is fixedly connected to the upper side of the mixing tank 1, and the drive motor 4 is fixedly connected to the upper end of the connecting frame 3. The connecting frame 3 provides stable installation support for the drive motor 4 and the extrusion mechanism 5, ensuring the coaxiality and operational stability of the transmission system.

[0026] like Figure 2 As shown, the extrusion mechanism 5 includes a connecting frame 51 fixedly connected to the bottom of the connecting frame 3. Inside the connecting frame 51 is a threaded rod 52 fixedly connected to the output end of the drive motor 4. A threaded block 53 is threadedly connected to the outer wall of the threaded rod 52. Three connecting rods 54 are fixedly connected to the side wall of the threaded block 53, and pistons 6 are fixedly connected to the bottom of each of the three connecting rods 54. The threaded rod 52 rotates under the drive motor 4, converting the rotational motion into linear motion of the threaded block 53 through threaded transmission. This, in turn, drives the three pistons 6 to descend synchronously within their respective metering containers 71, achieving quantitative extrusion of the ink raw material.

[0027] like Figure 3As shown, the metering mechanism 7 has three sets, each including a metering container 71. The bottom of the metering container 71 is threadedly connected to the connecting container 10 that penetrates the upper surface of the mixing container 1, facilitating the removal of the metering container 71. The piston 6 moves within the metering container 71. An upper metering plate 72 is fixedly connected to the inner bottom of the metering container 71. A movable lower metering plate 73 is provided at the bottom of the upper metering plate 72. Staggered perforations are provided between the upper metering plate 72 and the lower metering plate 73. The lower metering plate 73 is adjusted laterally by the adjusting mechanism 8. The three sets of metering containers 71 can respectively hold the main color ink, the auxiliary color ink, and the functional additives. By adjusting the lateral position of the lower metering plate 73 relative to the upper metering plate 72, the overlapping area of ​​the perforations of the two is changed, thereby precisely controlling the ink flow rate per unit time and achieving the proportion of multiple components.

[0028] like Figure 4 As shown, the adjusting mechanism 8 includes a fixed frame 81 fixedly connected to the outside of the metering tank 71. A scale knob 82 is provided on the upper side of the fixed frame 81. The bottom of the scale knob 82 extends through the interior of the fixed frame 81 and is fixedly connected to a worm gear 83. A worm wheel 84 is meshed with the side wall of the worm gear 83. A screw 85 is fixedly connected to the middle of the worm wheel 84. A moving block 86 is threadedly connected to the outer wall of the screw 85. A hollow rod 87 is fixedly connected to one side of the moving block 86. The other end of the hollow rod 87 extends through the interior of the metering tank 71 and is fixedly connected to the lower metering plate 73. The operator rotates the scale knob 82 according to the scale indication. The worm gear 83 drives the worm wheel 84 and the screw 85 to rotate, causing the moving block 86 to drive the hollow rod 87 and the lower metering plate 73 to move laterally. The self-locking characteristic of the worm gear drive ensures that the adjustment position remains stable during equipment operation and is not affected by vibration.

[0029] like Figure 2 As shown, a speed increaser 11 is fixedly connected to the bottom of the threaded rod 52, and the output end of the speed increaser 11 is connected to the stirring assembly 12. The speed increaser 11 increases the rotational speed of the threaded rod 52 to the higher rotational speed required by the stirring assembly 12, which meets the process requirements of efficient shearing and mixing of ink, and at the same time realizes the rational distribution and utilization of the power of the drive motor 4.

[0030] like Figure 5As shown, the reciprocating mechanism 9 includes a speed reducer 91 connected to the output of the drive motor 4. A rotating rod 92 is fixedly connected to the middle of the speed reducer 91. Both ends of the rotating rod 92 are connected to reciprocating screws 94 via bevel gear sets 93. A scraper ring 13 is threaded onto the outer wall of the reciprocating screw 94. The scraper ring 13 fits against the inner wall of the mixing tank 1. A limit block 95 is provided at the bottom of the reciprocating screw 94. The speed reducer 91 reduces the rotational speed and changes the transmission direction. The rotating rod 92 transmits power to the reciprocating screws 94 on both sides through the bevel gear sets 93 at both ends. The helical groove design of the reciprocating screw 94 drives the scraper ring 13 to perform periodic up-and-down reciprocating motion during rotation. The limit block 95 limits the lowest position of the scraper ring 13 to prevent it from interfering with the scraper 14.

[0031] like Figure 2 As shown, a removable filter screen 15 is also provided between the mixing tank 1 and the bottom tank 2, and a scraper 14 is attached to the upper surface of the filter screen 15. The filter screen 15 is used to trap solid impurities and undispersed particles in the mixed ink. The continuous scraping action of the scraper 14 makes the impurities evenly distributed on the surface of the filter screen 15 rather than locally accumulated, extending the effective working time of the filter screen 15. The removable design makes it easy to clean or replace it regularly.

[0032] The bottom of the bottom tank 2 is funnel-shaped, and each of the four corners is equipped with a support leg 17. The funnel-shaped bottom facilitates the complete collection and discharge of ink, avoiding dead corners; the support legs 17 provide stable equipment support, ensuring structural stability during operation.

[0033] The working principle of this embodiment is as follows: First, according to the target ink formula, the mixing ratio parameters of each metering tank 71 are set by three sets of adjustment mechanisms 8. The scale knob 82 is rotated to move the lower metering plate 73 to the corresponding position, and the overlapping area of ​​the drain holes of the upper metering plate 72 and the lower metering plate 73 is determined. The drive motor 4 is started, and the threaded rod 52 rotates to drive the threaded block 53 and the piston 6 downward. When the piston 6 moves downward, it presses the ink into the mixing tank 1. Since the overlapping area of ​​the drain holes is fixed, the amount of ink entering the mixing tank 1 per unit time remains stable, realizing the proportioned delivery of multiple raw materials.

[0034] Meanwhile, the threaded rod 52 drives the stirring assembly 12 to rotate at high speed via the speed increaser 11, performing strong shearing and stirring on the ink entering the mixing tank 1, ensuring thorough and uniform mixing of all components; the stirring assembly 12 drives the scraper 14 to rotate synchronously, continuously cleaning the upper surface of the filter screen 15. The power of the drive motor 4 is transmitted to the reciprocating screw 94 via the reducer 91, rotating rod 92, and bevel gear set 93, driving the scraper ring 13 to slowly move up and down along the inner wall of the mixing tank 1, scraping away the ink adhering to the tank wall in real time to prevent residue accumulation.

[0035] After the ink mixture is filtered through filter screen 15, it enters the bottom tank 2. The electromagnetic discharge pipe 16 is then opened to discharge the finished ink to the downstream printing equipment. During the production process, the mixing ratio parameters can be finely adjusted in real time through the adjustment mechanism 8 according to actual needs, or the filter screen 15 can be replaced by stopping the machine. The equipment is easy to maintain and has a strong continuous production capacity.

[0036] Example 2:

[0037] This embodiment is based on Embodiment 1, and refers to... Figure 1 Lifting lugs are provided on both sides of the upper surface of the connecting frame 3. These lugs, used in conjunction with an external crane, provide upward lifting force to the mixing tank 1 when separating it from the bottom tank 2. The lugs are integrally cast or welded to the connecting frame 3, ensuring strong load-bearing capacity. Their symmetrical arrangement ensures balance and stability during lifting. When it is necessary to replace the filter screen 15 or clean the inner wall of the mixing tank 1, the mixing tank 1 is vertically lifted using the lifting lugs while the bottom tank 2 is disassembled, exposing the filter screen 15 on top of the bottom tank 2. This significantly reduces the labor intensity of manual handling and improves equipment maintenance efficiency.

[0038] 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. An ink mixing device for a packaging box printing machine, characterized in that: It includes a mixing tank (1) and a bottom tank (2) threaded to the side wall of the mixing tank (1), and an electromagnetic discharge pipe (16) is provided at the bottom of the bottom tank (2). It also includes a drive motor (4), the output end of which is connected to a squeezing mechanism (5) and a reciprocating mechanism (9). The squeezing end of the squeezing mechanism (5) is connected to a piston (6), which moves in the metering mechanism (7). The metering mechanism (7) is also provided with a metering adjustment mechanism (8) on the outside. The adjustment mechanism (8) adjusts the amount of ink falling in the metering mechanism (7) per unit time and squeezes it into the mixing tank (1) through the piston (6). The mixing tank (1) is equipped with a stirring assembly (12) and a scraper (14) for mixing ink. The stirring assembly (12) and the scraper (14) are driven by a drive motor (4). The reciprocating end of the reciprocating mechanism (9) is connected to a scraper ring (13) for scraping the inner wall of the mixing tank (1).

2. The ink mixing equipment for a packaging box printing machine according to claim 1, characterized in that: A connecting frame (3) is fixedly connected to the upper side of the mixing tank (1), and the drive motor (4) is fixedly connected to the upper end of the connecting frame (3).

3. The ink mixing equipment for a packaging box printing machine according to claim 2, characterized in that: The extrusion mechanism (5) includes a connecting frame (51) fixedly connected to the bottom of the connecting frame (3). The connecting frame (51) is provided with a threaded rod (52) fixedly connected to the output end of the drive motor (4). The outer wall of the threaded rod (52) is threadedly connected to a threaded block (53). The side wall of the threaded block (53) is fixedly connected to three connecting rods (54). The bottom of each of the three connecting rods (54) is fixedly connected to a piston (6).

4. The ink mixing equipment for a packaging box printing machine according to claim 3, characterized in that: The quantitative mechanism (7) is provided in three sets, and each set includes a quantitative barrel (71). The bottom of the quantitative barrel (71) is threadedly connected to the connecting barrel (10) that runs through the upper surface of the mixing barrel (1). The piston (6) moves in the quantitative barrel (71). The bottom of the quantitative barrel (71) is fixedly connected to an upper quantitative plate (72). The bottom of the upper quantitative plate (72) is provided with a movable lower quantitative plate (73). There are staggered leakage holes between the upper quantitative plate (72) and the lower quantitative plate (73). The lower quantitative plate (73) is adjusted laterally by the adjustment mechanism (8).

5. The ink mixing equipment for a packaging box printing machine according to claim 4, characterized in that: The adjustment mechanism (8) includes a fixed frame (81) fixedly connected to the outside of the metering barrel (71). A scale knob (82) is provided on the upper side of the fixed frame (81). The bottom of the scale knob (82) extends through the interior of the fixed frame (81) and is fixedly connected to a worm gear (83). A worm wheel (84) is meshed with the side wall of the worm gear (83). A screw (85) is fixedly connected to the middle of the worm wheel (84). A moving block (86) is threadedly connected to the outer wall of the screw (85). A hollow rod (87) is fixedly connected to one side of the moving block (86). The other end of the hollow rod (87) extends through the interior of the metering barrel (71) and is fixedly connected to the lower metering plate (73).

6. The ink mixing equipment for a packaging box printing machine according to claim 3, characterized in that: The bottom of the threaded rod (52) is fixedly connected to a speed increaser (11), and the output end of the speed increaser (11) is connected to the stirring assembly (12).

7. The ink mixing equipment for a packaging box printing machine according to claim 2, characterized in that: The reciprocating mechanism (9) includes a speed reducer (91) connected to the output end of the drive motor (4). A rotating rod (92) is fixedly connected to the middle of the speed reducer (91). Both ends of the rotating rod (92) are connected to a reciprocating screw (94) through a bevel gear set (93). A scraper ring (13) is threadedly connected to the outer wall of the reciprocating screw (94). The scraper ring (13) is in contact with the inner wall of the mixing tank (1). A limit block (95) is provided at the bottom of the reciprocating screw (94).

8. The ink mixing equipment for a packaging box printing machine according to claim 1, characterized in that: A removable filter screen (15) is also provided between the mixing tank (1) and the bottom tank (2), and the scraper (14) is attached to the upper surface of the filter screen (15).

9. The ink mixing equipment for a packaging box printing machine according to claim 1, characterized in that: The bottom of the bottom bucket (2) is funnel-shaped, and each of the four corners is provided with a support leg (17).

Images