Carton printing and drying mechanism

Abstract

The utility model discloses a carton printing and drying mechanism, and belongs to the field of carton processing. Comprising a conveyor which is provided with a mounting frame; the drying assembly comprises a fixing cover, the fixing cover is installed on the installation frame, the top of the fixing cover is provided with an opening, notch grooves are formed in the four sides of the inner wall of the opening, and drying parts are arranged at the notch grooves in a sliding mode; the two groups of drying parts of the fixed cover are combined and defined as a drying group I, the other two groups of drying parts are combined and defined as a drying group II, and the drying group I and the drying group II are distributed in an up-down layered manner; the drying assembly comprises a dust cover, the dust cover is installed on the fixing cover, a motor is fixedly carried on the dust cover, the output end of the motor extends into the dust cover and is provided with a connecting shaft, and the connecting shaft is provided with two sets of driving parts which are distributed up and down. According to the carton printing and drying mechanism, the drying sets are layered up and down, the four drying parts are synchronously adjusted through gear and rack transmission, the carton size is precisely matched, and efficient and stable drying is achieved.

Description

A cardboard box printing and drying mechanism Technical Field

[0001] This utility model relates to the field of cardboard box processing technology, and in particular to a cardboard box printing and drying mechanism. Background Technology

[0002] In the modern packaging industry, cardboard boxes are a widely used packaging material, and their printing quality and drying efficiency directly affect the production cycle and product quality. Printed cardboard boxes need to dry quickly to prevent ink smudging and sticking, ensuring clear and complete designs to meet subsequent processing and transportation requirements.

[0003] Currently, commercially available cardboard box printing drying mechanisms have certain shortcomings. Some drying mechanisms use a single hot air circulation method, where hot air only blows onto the surface of the cardboard box from a fixed direction. This results in uneven heating and inconsistent drying in different areas, easily leading to wrinkles and deformation. Furthermore, existing drying mechanisms are mostly open or simple box structures, making it difficult to target the drying of the four sides of the cardboard box. Due to the lack of a comprehensive drying design for the three-dimensional surfaces of the cardboard box, the ink dries slowly on the sides and creases, making it prone to ink smudging during subsequent stacking and handling. Additionally, the insufficient drying on the sides results in a significant difference in moisture content compared to the front and back, creating shrinkage stress and causing warping and deformation of the cardboard box. Therefore, a new cardboard box printing drying mechanism needs to be designed.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This utility model provides a carton printing drying mechanism to solve the problems of uneven heating, difficulty in drying all four sides, and easy ink smudging and carton deformation caused by the use of a single hot air circulation in existing carton printing drying mechanisms.

[0006] This utility model embodiment adopts the following technical solution: a carton printing drying mechanism. It mainly includes a conveyor with a mounting frame; a drying assembly mounted on the mounting frame, the drying assembly including: a fixed cover mounted on the mounting frame, the top of the fixed cover being open, and notches and grooves being formed on the four sides of the inner wall of the opening, with drying sections slidably disposed at the notches and grooves; two sets of drying sections of the fixed cover are combined to define drying group one, and another two sets of drying sections are combined to define drying group two, drying group one and drying group two being distributed in an upper and lower layer; an adjusting assembly mounted on the fixed cover, the drying assembly including: a dust cover mounted on the fixed cover, a certain gap being reserved between the dust cover and the fixed cover, a motor fixedly mounted on the dust cover, the output end of the motor extending into the interior of the dust cover and mounted on a connecting shaft, the connecting shaft being equipped with two sets of upper and lower distributed drive sections, respectively driving the drying sections of drying group one and drying group two to move.

[0007] Furthermore, the drying section includes a mounting cover that is slidably disposed in the notch groove. Sliding pins are fixedly installed on both sides of the mounting cover, and corresponding sliding grooves are provided on both sides of the inner wall of the notch groove, with the sliding grooves having a T-shaped structure.

[0008] Furthermore, the upper drive section is named the first drive section, and the lower drive section is named the second drive section.

[0009] Furthermore, the first drive unit is composed of a gear fixed on the connecting shaft. The two sides of the gear mesh with two sets of oppositely arranged racks. The outer ends of the two sets of racks are fixedly connected to the mounting covers of the two drying units of the drying unit.

[0010] Furthermore, the second drive unit includes a second gear fixedly mounted on the connecting shaft and located below the first gear. The second gear rotates coaxially with the first gear. Two sets of opposing racks are also meshed on both sides of the second gear. The outer ends of the racks are connected to the mounting covers of the two drying units of the drying unit.

[0011] Furthermore, a PLC control system is installed on the mounting bracket.

[0012] Furthermore, a displacement sensor is fixedly installed on the top of the fixed cover, and its contact end is in close contact with the side of a set of mounting covers.

[0013] Furthermore, a heating element is installed near the bottom of the mounting cover. The heating element is an alloy heating wire, which is tightly arranged on an insulating ceramic support in a spiral winding structure. The insulating ceramic support is fixed to the inner wall of the mounting cover. The heating wire is installed in the fixed cover through a high-temperature resistant wire. A hot air generator is installed in the mounting cover and is electrically connected to the heating element. A fixed bucket is installed at the top of the mounting cover by fasteners. A guide plate is set inside the fixed bucket, and multiple sets of axial flow fans are embedded in the fixed bucket.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] A carton printing drying mechanism is disclosed, which achieves efficient drying of the carton from all directions without any blind spots by using two drying units arranged in a vertically layered manner. Each drying unit can be precisely adjusted in position via an adjustable component. Furthermore, the adjustable component employs a gear and rack transmission structure. When the motor drives the connecting shaft to rotate, gears one and two synchronously drive their corresponding racks, ensuring that the drying units of drying units one and two move closer or further apart in sync. This synchronous adjustment method not only guarantees the consistency and accuracy of the spacing adjustment among the four drying units but also effectively avoids errors that may occur due to manual adjustment, significantly improving drying efficiency and quality stability.

[0016] Furthermore, the gap between the dust cover and the fixed cover provides ample operating space for the internal components, while also serving as a buffer and protection, reducing interference from external factors on the precision transmission components. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 is an overall schematic diagram of a carton printing and drying mechanism according to this application;

[0020] Figure 2 is an exploded view of Figure 1;

[0021] Figure 3 is a schematic diagram of the drying component and the regulating component in Figure 1;

[0022] Figure 4 is an enlarged view of point A in Figure 2;

[0023] Figure 5 is a schematic diagram of the bottom structure of Figure 3;

[0024] Figure label:

[0025] 1. Conveyor; 11. Mounting frame; 2. Drying assembly; 21. Fixing cover; 22. Opening slot; 23. Notched slot; 231. Slide chute; 24. Mounting cover; 241. Heating element; 242. Sliding pin block; 25. Fixed hopper; 251. Fan; 3. Adjusting assembly; 31. Dust cover; 32. Fixing plate; 33. Motor; 34. Connecting shaft; 35. Gear one; 36. Gear two; 37. Rack one; 38. Rack two. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0028] Referring to Figures 1-2, this embodiment of the present invention provides a carton printing drying mechanism, including a conveyor 1. The conveyor 1 includes a mounting frame 11, which provides stable support for the conveyor 1. A drying component 2 is mounted on the mounting frame 11. The drying component 2 includes a fixed cover 21 fixedly mounted on the mounting frame 11. The fixed cover 21 has a cuboid box structure with openings at both ends. Opening slots 22 are provided on both sides for the passage of cartons. The size of the opening slots 22 is adapted to common carton specifications to ensure that the cartons can pass through smoothly.

[0029] As shown in Figures 2 and 3, the top of the fixed cover 21 is open, and notches 23 are provided on the four sides of the inner wall of the opening. A drying part is slidably provided in the notches 23. The drying part includes a mounting cover 24 slidably provided in the notches 23. Sliding pins 242 are fixedly installed on both sides of the mounting cover 24. Correspondingly, sliding grooves 231 are provided on both sides of the inner wall of the notches 23. The sliding grooves 231 have a T-shaped structure, which can prevent the sliding pins 242 from falling out and ensure their smooth sliding.

[0030] Operators can manually push the mounting cover 24 according to the actual width and height of the carton, allowing it to slide along the straight direction of the slide groove 231 via the sliding pin 242, quickly adjusting the position of the drying section. When the carton size is small, the mounting cover 24 can be slid inwards towards the opening groove 22 to reduce the drying area and concentrate heat; if the carton size is large, the mounting cover 24 can be slid outwards to expand the drying coverage area.

[0031] A heating element 241 is installed near the bottom inside the mounting cover 24. The heating element 241 is preferably an alloy heating wire, which is tightly arranged on an insulating ceramic support in a spiral winding structure. The insulating ceramic support is fixed to the inner wall of the mounting cover 24. The heating wire is installed inside the fixed cover 21 through a high-temperature resistant wire. At the same time, a hot air generator (not shown in the figure) is installed inside the mounting cover 24. The hot air generator is electrically connected to the heating element 241 and can precisely adjust the hot air temperature and wind speed according to the carton material and ink type to achieve the adjustment of heating power.

[0032] Furthermore, a fixed bucket 25 is fastened to the top of the mounting cover 24 using fasteners. The fixed bucket 25 contains a guide plate to optimize airflow. Multiple axial flow fans 251 are embedded in the fixed bucket 25. During operation, the fans 251 draw in outside air, which is then guided by the guide plate and thoroughly mixed with the heat generated by the heating element 241 to form uniformly heated air, which is then directed towards the side of the carton to accelerate ink drying.

[0033] In this application, taking Figure 3 as an example, two sets of drying sections symmetrically arranged on the same horizontal direction in the fixed cover 21 are defined as drying group one, and two sets of drying sections symmetrically arranged on the other horizontal direction are defined as drying group two. Drying group one and drying group two are distributed in an upper and lower layer. This layout design ensures that the two drying groups do not interfere with each other when adjusting their position spacing. Operators can flexibly adjust the position of the drying sections in drying group one and drying group two according to the three-dimensional dimensions of the carton. Whether it is an ultra-thin carton or a thickened carton, it can achieve all-round, dead-angle-free, and efficient drying.

[0034] It is worth noting that although drying group one and drying group two are distributed vertically, the heating elements 241 in the drying sections of both groups are always kept at the same horizontal position. This design ensures that when the carton passes through drying assembly 2, the same height area on its side can simultaneously receive uniform heat from the heating elements 241 of drying group one and drying group two, avoiding inconsistent drying effects caused by the height difference of the heating elements 241. Combined with the hot air generated by the axial flow fan 251 on the fixed hopper 25, the side of the carton can obtain balanced heat and airflow in the horizontal direction, further improving the uniformity and reliability of the drying effect.

[0035] As shown in Figures 2-5, an adjustment component 3 is installed on the fixed cover 21. The adjustment component 3 is used to simultaneously and precisely adjust the spacing between the four drying sections. The adjustment component 3 includes a dust cover 31 fixedly installed on the fixed cover 21. The dust cover 31 has a fixing plate 32. The dust cover 31 is fixedly connected to the fixed cover 21 through the fixing plate 32. A certain gap is reserved between the dust cover 31 and the fixed cover 21.

[0036] Furthermore, a motor 33 is fixedly mounted on the dust cover 31. The output end of the motor 33 extends into the interior of the dust cover 31 and is fixedly mounted on a connecting shaft 34. The connecting shaft 34 is equipped with two sets of drive units distributed vertically, which respectively drive the drying units of drying group one and drying group two to move. The upper drive unit is named the first drive unit, and the lower drive unit is named the second drive unit.

[0037] The first drive unit consists of a gear 35 fixed on the connecting shaft 34, with each side of the gear 35 meshing with two sets of opposing racks 37. The outer ends of each of the racks 37 are fixedly connected to the mounting covers 24 of the two drying sections of the drying unit. When the motor 33 drives the connecting shaft 34 to rotate, the gear 35 rotates accordingly. Based on the transmission principle of the gear and rack, the racks 37 on both sides will move in opposite linear directions, thereby realizing the synchronous movement of the two drying sections of the drying unit towards or away from each other.

[0038] The second drive unit includes a second gear 36 fixedly mounted on the connecting shaft 34 and located below the first gear 35. The second gear 36 rotates coaxially with the first gear 35. Two sets of opposing racks 38 are also meshed on both sides of the second gear 36. The outer ends of the racks 38 are connected to the mounting covers 24 of the two drying sections of the second drying unit. When the second gear 36 rotates, the racks 38 on both sides move in opposite directions in a linear motion, causing the two drying sections of the second drying unit to move closer or further apart synchronously, ensuring consistent spacing adjustment of the four drying sections.

[0039] It should be noted that a PLC control system is installed on the mounting bracket 11, which is used to control the operation of the above-mentioned equipment;

[0040] To achieve precise control over the distance between the four drying sections, a displacement sensor is fixedly installed on the top of the fixed cover 21. Its contact end is in close contact with the side of a set of mounting covers 24. By monitoring the displacement changes of the mounting covers 24 in real time, the distance between the four drying sections as they approach or move away from each other is accurately measured, and the data is fed back to the control system to provide an accurate basis for subsequent adjustment operations.

[0041] When the infrared sensor detects that a group of cardboard boxes is directly under the fixed cover 21, it will immediately transmit a signal to the PLC control system. The PLC control system will then control the conveyor 1 to stop conveying and start the built-in timing module to start timing. During the timing process, the PLC control system continuously monitors the time. When the time reaches the preset cardboard box drying time, the PLC control system will determine that the drying process is completed. At this time, it will control the conveyor 1 to continue conveying to ensure that each cardboard box can be fully and effectively dried.

[0042] Furthermore, a UV lamp is fixedly installed at the top of the inner wall of the dust cover 31. Its main function is to use ultraviolet light to accelerate the curing process of the coating or glue on the surface of the cardboard box, thereby improving drying efficiency and quality. Compared with traditional drying methods, UV lamp irradiation effectively avoids problems such as cardboard box deformation and discoloration caused by excessive drying time, ensuring the appearance quality and structural strength of the cardboard box, and providing reliable protection for subsequent packaging use.

[0043] Working Principle: Conveyor 1 smoothly transports the printed cartons to drying assembly 2. The operator can adjust the motor 33 in assembly 3 to drive the connecting shaft 34 to rotate, according to the actual size of the cartons. This drives gears 35 and 36 to mesh with racks 37 and 38 respectively, achieving precise adjustment of the spacing between the four drying sections. This ensures the drying section accurately matches the carton size and adjusts the drying area. Simultaneously, when the infrared sensor detects that the carton has arrived directly below the fixing cover 21, it sends a signal to the PLC control system. The PLC control system immediately stops conveyor 1 and starts the timing module to ensure the carton is in the drying position.

[0044] During the drying process, the alloy heating wire inside the mounting cover 24 is energized and heats up. The hot air generator precisely controls the hot air temperature and speed according to the cardboard material and ink type. The two work together to improve heating efficiency. The axial flow fan 251 draws outside air into the fixed bucket 25, guides it through the guide plate, mixes it with heat, and forms uniform hot air that blows directionally onto the sides of the cardboard. The heating element 241 and the hot air work together to accelerate ink drying. During this process, the displacement sensor monitors the position changes of the drying section in real time and feeds the data back to the PLC control system to ensure precise spacing adjustment. When the preset drying time is reached, the PLC control system determines that the drying process is complete and controls the conveyor 1 to resume operation, sending out the dried cardboard.

[0045] In addition, the UV lamp at the top of the inner wall of the dust cover 31 is turned on simultaneously, using ultraviolet light to further accelerate the curing of the coating or glue on the carton surface, avoiding deformation and discoloration during the drying process, ensuring the quality of the carton, and laying a good foundation for subsequent packaging processes.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A carton printing and drying mechanism, characterized in that: include: Conveyor (1), which has a mounting frame (11); A drying assembly (2) is mounted on a mounting frame (11). The drying assembly (2) includes: a fixed cover (21) mounted on the mounting frame (11), the top of the fixed cover (21) being open, and notches (23) being provided on the four sides of the inner wall of the opening, with drying sections slidably disposed at the notches (23); two sets of drying sections of the fixed cover (21) are combined to define drying group one, and two sets of drying sections are combined to define drying group two, with drying group one and drying group two being distributed in upper and lower layers; and an adjustment assembly (3). The drying assembly (2) includes a dust cover (31) installed on the fixed cover (21). A certain gap is reserved between the dust cover (31) and the fixed cover (21). A motor (33) is fixedly mounted on the dust cover (31). The output end of the motor (33) extends into the dust cover (31) and is equipped with a connecting shaft (34). The connecting shaft (34) is equipped with two sets of drive units distributed vertically, which respectively drive the drying units of drying assembly one and drying assembly two to move.

2. The carton printing and drying mechanism according to claim 1, characterized in that: The drying section includes a mounting cover (24) that is slidably disposed in the notch (23). Sliding pins (242) are fixedly installed on both sides of the mounting cover (24). Correspondingly, sliding grooves (231) are provided on both sides of the inner wall of the notch (23). The sliding grooves (231) have a T-shaped structure.

3. The carton printing and drying mechanism according to claim 2, characterized in that: The upper drive section is named the first drive section, and the lower drive section is named the second drive section.

4. The carton printing and drying mechanism according to claim 3, characterized in that: The first drive unit is composed of a gear (35) fixed on the connecting shaft (34). The gear (35) meshes with two sets of racks (37) arranged opposite to each other on both sides. The outer ends of the two sets of racks (37) are fixedly connected to the mounting covers (24) of the two drying units of the drying unit.

5. A carton printing and drying mechanism according to claim 4, characterized in that: The second drive unit includes a gear two (36) fixedly mounted on the connecting shaft (34) and located below the gear one (35). The gear two (36) rotates coaxially with the gear one (35). Two sets of opposing racks two (38) are also meshed on both sides of the gear two (36). The outer ends of the racks two (38) are connected to the mounting covers (24) of the two drying units of the drying unit two.

6. The carton printing and drying mechanism according to claim 5, characterized in that: A PLC control system is installed on the mounting bracket (11).

7. A carton printing and drying mechanism according to claim 1, characterized in that: The displacement sensor is fixedly installed on the top of the fixed cover (21), and its contact end is in close contact with the side of a set of mounting covers (24).

8. A carton printing and drying mechanism according to claim 2, characterized in that: A heating element (241) is installed near the bottom of the mounting cover (24). The heating element (241) is an alloy heating wire, which is tightly arranged on an insulating ceramic support in a spiral winding structure. The insulating ceramic support is fixed to the inner wall of the mounting cover (24). The heating wire is installed in the fixed cover (21) through a high-temperature resistant wire. A hot air generator is installed in the mounting cover (24). The hot air generator is electrically connected to the heating element (241). A fixed bucket (25) is installed at the top of the mounting cover (24) by fasteners. A guide plate is provided inside the fixed bucket (25). Multiple sets of axial flow fans (251) are embedded in the fixed bucket (25).

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