A heating drying device for carton production

Abstract

The application relates to the technical field of carton production equipment, and discloses a heating and drying device for carton production, which comprises a rack, a drying box, a conveying assembly, a temperature control assembly and a turnover mechanism; the rack is arranged in a U shape and is used for supporting and mounting the whole device; the drying box is a cuboid heat preservation structure and is fixedly mounted on the upper surface of the rack; feeding ports and discharging ports are symmetrically arranged in the two side walls of the drying box; the conveying assembly comprises two groups of high-temperature-resistant conveying belts; through the cooperative design of the automatic turnover mechanism and the multiple groups of electric heating pipes, the upper and lower surfaces of the carton can be uniformly heated, the product quality is improved, the two groups of high-temperature-resistant conveying belts realize continuous conveying of the carton, the large-scale demand is met, the controller supports multiple temperature control programs, the temperature can be intelligently and accurately controlled, the energy consumption cost is reduced, and the practicability of the whole device is improved.

Description

Technical Field

[0001] This application relates to the technical field of cardboard box production equipment, and in particular to a heating and drying apparatus for cardboard box production. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. Depending on the materials used, there are corrugated cardboard boxes, single-layer cardboard boxes, etc., and various specifications and models are available. Three-layer and five-layer cardboard boxes are commonly used, while seven-layer boxes are less common. Each layer consists of linerboard, corrugated paper, core paper, and facing paper. Linerboard and facing paper can be made of kraft paper or other similar materials, while the core paper is made of corrugated paper. The colors and textures of different types of paper vary, and the paper produced by different manufacturers also differs. Cardboard boxes are typically used as wrapping materials for goods or as an outer protective layer for items. The volume of a cardboard box varies depending on the size of the goods. As a core product in the packaging industry, the production process of cardboard boxes involves key steps such as cutting raw paper, corrugating, gluing, printing, and drying. The drying process directly affects the bonding strength, flatness, and moisture resistance of the cardboard box.

[0003] The industry has put forward three core technical requirements for heating and drying equipment: First, drying uniformity, which requires ensuring that the temperature of the upper and lower surfaces, edges and center areas of the carton is consistent, and avoiding incomplete or over-drying in some areas; second, high efficiency and continuity, which requires adapting to the conveying speed of the carton production line and supporting continuous drying of cartons of various specifications; and third, intelligent controllability, which requires precise temperature adjustment and automated monitoring of the drying process to reduce the intensity of manual intervention.

[0004] With the rapid development of e-commerce logistics and the food packaging industry, the demand for cardboard box production capacity has surged. The technical defects of traditional drying equipment have become a key bottleneck restricting the efficiency of production lines and the product qualification rate. This is especially true for small and medium-sized cardboard box manufacturers, where product scrapping and energy waste caused by drying problems are more prominent. Targeted improvements are urgently needed to meet the industry's stringent requirements. Utility Model Content

[0005] To address the problems mentioned in the background art, this application provides a heating and drying apparatus for cardboard box production.

[0006] The heating and drying device for cardboard box production provided in this application adopts the following technical solution:

[0007] A heating and drying apparatus for carton production includes a frame, a drying chamber, a conveying assembly, a temperature control assembly, and a flipping mechanism;

[0008] The frame is U-shaped and is used to support and install the overall device;

[0009] The drying box is a rectangular insulated structure and is fixedly installed on the upper surface of the frame. The two side walls of the drying box are symmetrically provided with inlet and outlet.

[0010] The conveying assembly includes two sets of high-temperature resistant conveyor belts, which are symmetrically arranged inside the frame and used to convey cartons. The frame is equipped with a drive assembly for driving the high-temperature resistant conveyor belts to rotate.

[0011] The flipping mechanism includes a servo motor, a connecting shaft, and multiple flipping plates. The connecting shaft is rotatably mounted on the inner side wall of the frame. Multiple flipping plates located between two sets of high-temperature resistant conveyor belts are fixedly mounted on the side wall of the connecting shaft. The servo motor is fixedly mounted on one side of the frame, and the output end of the servo motor is fixedly connected to one end of the connecting shaft.

[0012] The temperature control component includes a controller, multiple sets of electric heating tubes, and multiple sets of temperature sensors. The multiple sets of electric heating tubes are fixedly installed at equal intervals on the top of the inner side wall of the drying oven. The multiple sets of temperature sensors are embedded at equal intervals on one side inside the drying oven. The controller is fixedly installed on the outer side wall of the frame and is electrically connected to the temperature sensors, electric heating tubes, and servo motors respectively, realizing intelligent control of the equipment. The temperature control range is 30-80℃.

[0013] Preferably, the drive assembly includes a drive motor, a drive roller, and a driven roller. The drive roller and the driven roller are symmetrically rotated and installed inside the frame. The two sets of high-temperature resistant conveyor belts are sleeved on the outside of the drive roller and the driven roller. The drive motor is fixedly connected to one side of the frame. The output end of the drive motor is fixedly connected to one end of the drive roller through a coupling. The drive motor is electrically connected to the controller.

[0014] Preferably, the controller includes a PLC control module and a touch screen, which supports setting multiple temperature control programs and displays the temperature inside the drying oven in real time.

[0015] Preferably, the inner wall of the drying oven is fixedly equipped with symmetrically arranged infrared sensor transmitters and infrared sensor receivers, which work together. The infrared sensor receivers are electrically connected to the controller to control the rotation of the flip plate.

[0016] Preferably, a dehumidification pipe is fixedly connected to the upper surface of the drying box, and a valve is provided on the side wall of the dehumidification pipe.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] Compared to existing technologies, this device features a collaborative design that uses an automatic flipping mechanism and multiple sets of electric heating tubes to achieve uniform heating of the upper and lower surfaces of the carton, improving product quality. Two sets of high-temperature resistant conveyor belts enable continuous carton transport, adapting to large-scale production needs. The controller supports multiple temperature control programs, providing intelligent and precise temperature control, reducing energy consumption costs, and improving the overall practicality of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the application;

[0020] Figure 2 This is a cross-sectional structural diagram of the drying oven in the embodiment of the application;

[0021] Figure 3 This is a schematic diagram of the conveying component and the flipping mechanism in the embodiment of the application.

[0022] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Drying chamber; 3. Exhaust pipe; 4. Valve; 5. Feed inlet; 6. High-temperature resistant conveyor belt; 7. Drive motor; 8. Controller; 9. Servo motor; 10. Discharge outlet; 11. Electric heating element; 12. Temperature sensor; 13. Infrared sensor transmitter; 14. Infrared sensor receiver; 15. Tilting plate; 16. Driven roller; 17. Driven roller; 18. Connecting shaft. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0024] This application discloses a heating and drying apparatus for cardboard box production. (Refer to...) Figure 1-3 A heating and drying device for carton production includes a frame 1, a drying box 2, a conveying assembly, a temperature control assembly, and a flipping mechanism;

[0025] The frame 1 is U-shaped and is used to support and install the overall device;

[0026] The drying oven 2 is a rectangular heat-insulating structure and is fixedly installed on the upper surface of the frame 1. The two side walls of the drying oven 2 are symmetrically provided with a feed inlet 5 and a discharge outlet 10. The inner side wall of the drying oven 2 is fixedly installed with symmetrically arranged infrared sensor transmitters 13 and infrared sensor receivers 14, which work together. The upper surface of the drying oven 2 is fixedly connected to a dehumidification pipe 3, and a valve 4 is provided on the side wall of the dehumidification pipe 3.

[0027] The conveying assembly includes two sets of high-temperature resistant conveyor belts 6, which are symmetrically arranged inside the frame 1 and used to convey cartons. The frame 1 is equipped with a drive assembly for driving the high-temperature resistant conveyor belts 6 to rotate. The drive assembly includes a drive motor 7, a drive roller 16, and a driven roller 17. The drive roller 16 and the driven roller 17 are symmetrically rotated and installed inside the frame 1. The two sets of high-temperature resistant conveyor belts 6 are sleeved on the outside of the drive roller 16 and the driven roller 17. The drive motor 7 is fixedly connected to one side of the frame 1, and the output end of the drive motor 7 is fixedly connected to one end of the drive roller 16 through a coupling.

[0028] The flipping mechanism includes a servo motor 9, a connecting shaft 18, and multiple flipping plates 15. The connecting shaft 18 is rotatably mounted on the inner side wall of the frame 1. Multiple flipping plates 15 located between two sets of high-temperature resistant conveyor belts 6 are fixedly mounted on the side wall of the connecting shaft 18. The servo motor 9 is fixedly mounted on one side of the frame 1, and the output end of the servo motor 9 is fixedly connected to one end of the connecting shaft 18.

[0029] The temperature control component includes a controller 8, multiple sets of electric heating tubes 11, and multiple sets of temperature sensors 12. The multiple sets of electric heating tubes 11 are fixedly installed at equal intervals on the top of the inner side wall of the drying oven 2. The multiple sets of temperature sensors 12 are embedded at equal intervals on one side inside the drying oven 2. The controller 8 is fixedly installed on the outer side wall of the frame 1 and is electrically connected to the temperature sensors 12, electric heating tubes 11, servo motor 9, drive motor 7, and infrared sensor receiver 14 respectively to realize intelligent control of the equipment. The temperature control range is 30-80℃. The controller 8 includes a PLC control module and a touch screen, supports setting multiple temperature control programs, and displays the temperature inside the drying oven 2 in real time.

[0030] The implementation principle of the heating and drying device for carton production in this application embodiment is as follows: All electrical components in this application are externally connected to a power supply and control switch during use. Before use, the equipment is initialized via the controller 8 on the outer wall of the frame 1. Temperature control parameters are set on the touchscreen of the controller 8 according to the type of carton to be dried (e.g., corrugated carton, single-layer cardboard box) and processing requirements (gluing and drying or printing and curing). For gluing and drying, multiple temperature control programs are set (e.g., 50℃ at the inlet, 60℃ in the middle, and 55℃ at the outlet) to adapt to the temperature requirements of the carton from wet to dry. For printing and curing, a constant temperature of 45℃ is set to avoid excessive heating and discoloration of the ink. Simultaneously, the conveyor speed is set (adjusted according to the carton thickness; a slower speed is selected for thicker cartons). After the parameters are set, the PLC module of the controller 8 automatically stores and synchronizes them to each actuator. Open valve 4 of the dehumidification pipe 3 on the upper surface of drying chamber 2 (adjust the opening degree according to the ambient humidity), start the equipment preheating, the electric heating tube 11 starts to heat up, the temperature sensor 12 monitors the temperature of each area inside drying chamber 2 in real time, and feeds the data back to the controller 8. When the temperature inside the chamber reaches the set initial value, the equipment enters standby mode, ready to receive cartons. Place the glued or printed cartons neatly on the two sets of high-temperature resistant conveyor belts 6 through the feed port 5 on one side of drying chamber 2, and start the drive assembly: the drive motor 7 drives the active roller 16 to rotate through the coupling, the active roller 16 drives the high-temperature resistant conveyor belt 6 and the driven roller 17 to rotate synchronously, and the conveyor belt smoothly feeds the cartons into drying chamber 2 at the set speed. Drying chamber 2 has a rectangular heat-insulating structure, which can reduce heat loss inside the chamber. The electric heating tubes 11 distributed at equal intervals on the top continuously release heat to form a uniform high-temperature environment, heating the upper surface of the cartons and accelerating moisture evaporation. During the carton conveying process, the temperature sensor 12 monitors the temperature inside the box in real time. If the temperature in a certain area is lower than the set value, the controller 8 automatically increases the power of the electric heating tube 11 in the corresponding area; if the temperature is higher than the set value, the power is reduced to ensure that the temperature inside the box remains stable within the set range. At the same time, the dehumidification pipe 3 continuously discharges the water vapor evaporated inside the box to avoid excessive humidity affecting the drying efficiency. The operator can adjust the dehumidification volume through the valve 4 to balance energy consumption and drying effect. When the carton is conveyed to the middle of the drying chamber 2, the infrared rays emitted by the infrared sensor transmitter 13 on the inner wall of the drying chamber 2 are blocked by the carton, and the infrared sensor receiver 14 cannot receive the signal. It immediately transmits the detection signal to the controller 8. The controller 8 instructs the servo motor 9 to start, and the servo motor 9 drives the connecting shaft 18 to rotate. Multiple flipping plates 15 on the connecting shaft 18 rotate synchronously (rotation angle 90°), gently flipping the carton over during the movement and bringing it into direct contact with the electric heating tube 11 for heating. The spacing of the flipping plate 15 is precisely matched with the speed of the conveyor belt, ensuring that each carton can be accurately flipped without collision. After flipping, the moisture remaining on the bottom surface of the carton evaporates quickly in a high-temperature environment, avoiding the problem of "dry on top and wet on bottom" in traditional drying devices.After the flipping is completed, the servo motor 9 pauses, waiting for the next carton to trigger the infrared sensor signal to achieve continuous automatic flipping. The carton, after being heated and dried on both sides, is sent out through the discharge port 10 on the other side of the drying chamber 2, completing the drying process, and can be directly transferred to the subsequent flattening and forming processes. If an abnormality occurs during production (such as carton jamming causing conveyor belt overload, or temperature sensor 12 detecting an over-temperature of 80°C), the controller 8 immediately triggers the protection mechanism: stopping the drive motor 7 and the electric heating tube 11, the servo motor 9 drives the flipping plate 15 to reset, and at the same time the touch screen displays the fault code to remind the operator to troubleshoot the problem; after the fault is resolved, restarting the equipment will resume production without resetting the parameters.

[0031] During this process, the automatic flipping mechanism and the coordinated design of multiple sets of electric heating tubes 11 achieve uniform heating of the upper and lower surfaces of the carton, improving product quality. Two sets of high-temperature resistant conveyor belts 6 enable continuous conveying of the carton, adapting to large-scale needs. The controller 8 supports multiple temperature control programs, intelligent and precise temperature control, reduces energy consumption costs, and improves the practicality of the overall device.

[0032] Here, the models of electrical components involved in this application can be selected according to the actual situation. They are existing technologies and widely used in society, so they will not be elaborated on further.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0034] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heating and drying apparatus for cardboard box production, characterized in that: Includes a frame (1), a drying oven (2), a conveying assembly, a temperature control assembly, and a tilting mechanism; The frame (1) is U-shaped and is used to support and install the overall device; The drying box (2) is a rectangular heat-insulating structure and is fixedly installed on the upper surface of the frame (1). The two side walls of the drying box (2) are symmetrically provided with a feed inlet (5) and a discharge outlet (10). The conveying assembly includes two sets of high-temperature resistant conveyor belts (6). The two sets of high-temperature resistant conveyor belts (6) are symmetrically arranged inside the frame (1) and used to convey cartons. The frame (1) is provided with a drive assembly for driving the high-temperature resistant conveyor belts (6) to rotate. The flipping mechanism includes a servo motor (9), a connecting shaft (18), and multiple flipping plates (15). The connecting shaft (18) is rotatably mounted on the inner side wall of the frame (1). Multiple flipping plates (15) located between two sets of high-temperature resistant conveyor belts (6) are fixedly mounted on the side wall of the connecting shaft (18). The servo motor (9) is fixedly mounted on one side of the frame (1). The output end of the servo motor (9) is fixedly connected to one end of the connecting shaft (18). The temperature control component includes a controller (8), multiple sets of electric heating tubes (11) and multiple sets of temperature sensors (12). The multiple sets of electric heating tubes (11) are fixedly installed at equal intervals on the top of the inner side wall of the drying oven (2). The multiple sets of temperature sensors (12) are embedded at equal intervals on one side inside the drying oven (2). The controller (8) is fixedly installed on the outer side wall of the frame (1) and electrically connected to the temperature sensors (12), electric heating tubes (11) and servo motor (9) respectively to realize intelligent control of the equipment. The temperature control range is 30-80℃.

2. The heating and drying apparatus for cardboard box production according to claim 1, characterized in that: The drive assembly includes a drive motor (7), a drive roller (16), and a driven roller (17). The drive roller (16) and the driven roller (17) are symmetrically rotated and installed inside the frame (1). Two sets of high-temperature resistant conveyor belts (6) are sleeved on the outside of the drive roller (16) and the driven roller (17). The drive motor (7) is fixedly connected to one side of the frame (1). The output end of the drive motor (7) is fixedly connected to one end of the drive roller (16) through a coupling. The drive motor (7) is electrically connected to the controller (8).

3. The heating and drying apparatus for cardboard box production according to claim 1, characterized in that: The controller (8) includes a PLC control module and a touch screen, which supports setting multiple temperature control programs and displays the temperature inside the drying oven (2) in real time.

4. The heating and drying apparatus for cardboard box production according to claim 1, characterized in that: The inner wall of the drying oven (2) is fixedly equipped with symmetrically arranged infrared sensor transmitters (13) and infrared sensor receivers (14), which work together. The infrared sensor receivers (14) are electrically connected to the controller (8) to control the rotation of the flip plate (15).

5. A heating and drying apparatus for cardboard box production according to claim 1, characterized in that: The upper surface of the drying box (2) is fixedly connected to a dehumidification pipe (3), and a valve (4) is provided on the side wall of the dehumidification pipe (3).

Images