Board bonding device for corrugated board processing

Abstract

This invention provides a cardboard bonding device for corrugated cardboard processing, belonging to the field of corrugated cardboard processing technology. The device includes an electric conveyor belt and a segmented pressing assembly, an infrared pre-curing assembly, and a hot air drying assembly arranged sequentially. The segmented pressing assembly uses a cylinder-driven pressure roller with a silicone buffer sleeve to initially press the coated cardboard, ensuring uniform bonding and reducing damage. The infrared pre-curing assembly uses a medium-wave infrared lamp to pre-cur the pressed cardboard, accelerating the initial curing of the adhesive. The hot air drying assembly uses a hot air blower to dry the cardboard, ensuring complete adhesive curing. The device is equipped with casters and a leveling screw at the bottom for easy movement and leveling. This invention, through the synergistic effect of infrared pre-curing and hot air drying, significantly shortens the adhesive curing time, improves processing efficiency, adapts to the pressing needs of cardboard of various thicknesses, and facilitates equipment maintenance.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard processing technology, and in particular to a cardboard bonding device for corrugated cardboard processing. Background Technology

[0002] Corrugated cardboard processing is a crucial part of the packaging industry, and its processes and equipment applications directly affect product quality and production efficiency.

[0003] Currently, in the corrugated cardboard processing, the multi-layered structure after gluing is pressed together by a pressing mechanism, and then creases are pressed into the folded parts of the cardboard by a creasing machine to facilitate subsequent cutting and shaping. However, the glue curing time of the pressed corrugated cardboard is relatively long, which affects the overall processing efficiency.

[0004] To address the aforementioned problems, this utility model document proposes a cardboard bonding device for corrugated cardboard processing. Utility Model Content

[0005] This invention provides a cardboard bonding device for corrugated cardboard processing, which solves the problem that the curing time of the glue on the pressed corrugated cardboard is too long, thus affecting the overall processing efficiency.

[0006] This utility model provides the following technical solution:

[0007] A cardboard bonding apparatus for corrugated cardboard processing includes:

[0008] An electric conveyor belt, wherein the bottom of the base frame on both sides of the electric conveyor belt is fixedly provided with the same support base, and the top of the base frame on both sides of the electric conveyor belt is fixedly provided with a top plate, and the two top plates are sequentially provided with a segmented pressing component, an infrared pre-curing component and a hot air drying component;

[0009] The infrared pre-curing component includes the same mounting box disposed on the top of two top plates. The mounting box is located in the middle section of the electric conveyor belt, and two sets of medium-wave infrared lamps are installed in the cavity at the bottom of the mounting box.

[0010] The hot air drying assembly includes a vertical plate fixedly installed on the top of the top plate, and a crossbar fixedly installed between the two vertical plates. Two hot air blowers are installed on the crossbar at a downward angle, and both hot air blowers are located at the end of the electric conveyor belt.

[0011] In one possible design, the segmented pressing assembly includes multiple fixed frames equidistantly fixed on the top of two top plates, all of which are located at the starting end of the electric conveyor belt. A cylinder is fixedly installed at the center of the top of each fixed frame, and the output end of the cylinder passes through the inner wall of the fixed frame and is fixedly mounted with a U-shaped mounting bracket. The two ends of the inner wall of the U-shaped mounting bracket are rotatably mounted with the same pressure roller via bearings.

[0012] In one possible design, the pressure roller is fitted with a silicone cushioning sleeve.

[0013] In one possible design, the mounting bracket has multiple sliding holes equidistantly arranged, and a guide rod is slidably arranged in the sliding holes. The bottom end of the guide rod is fixedly connected to the top of the U-shaped mounting bracket.

[0014] In one possible design, one side of the outer wall of the mounting box is rotatably connected to the outer wall of one of the top plates via a hinge, and the other side of the mounting box is fixed to the outer wall of another top plate via two fasteners. Two hooks are symmetrically fixed on the outer wall of the mounting box, and a buckle that works with the corresponding hook is installed on the outer wall of one of the top plates.

[0015] In one possible design, the bottom of the support base is fixedly equipped with two rows of casters for moving the device and two rows of leveling screws for leveling the device. The leveling screws are threaded with hollow supports for contacting the ground.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] The working principle and usage process of this technical solution are as follows:

[0018] In use, the device can be moved to the work area using casters and leveled using leveling screws and hollow supports to ensure stability. Then, the cylinder descent height is set according to processing requirements. The cylinder output end at the top of the fixed frame is pushed downward, driving the U-shaped mounting frame and pressure roller to descend to the specified height. Then, the glued multi-layer corrugated cardboard is placed at the starting end of the electric conveyor belt. After starting the electric conveyor belt, the cardboard begins to move forward. When the cardboard moves to the underside of the segmented pressing assembly, the silicone buffer sleeve on the pressure roller contacts the corrugated cardboard and performs initial pressing, so that the multi-layer cardboard is initially bonded together. The silicone buffer sleeve reduces damage during the pressing process, and the guide rod slides in the sliding hole to ensure the stability of the pressing process.

[0019] After being pressed, the cardboard continues to move to the area below the infrared pre-curing component. Two sets of medium-wave infrared lamps at the bottom of the mounting box emit infrared rays to pre-cur the cardboard and accelerate the initial curing of the adhesive. If the medium-wave infrared lamps need to be replaced or maintained, the mounting box can be opened by flipping the hinges and using the hooks and handles in the fasteners to fix or unlock it. After being infrared pre-cured, the cardboard moves to the area below the hot air drying component. Two hot air blowers tilt downwards and blow hot air to further dry the cardboard, ensuring that the adhesive is completely cured. The dried cardboard is then conveyed by an electric conveyor belt to subsequent processing equipment (such as creasing machines, slitting machines, etc.) for further processing.

[0020] This utility model has the following beneficial effects:

[0021] This invention significantly shortens the curing time of the adhesive through infrared pre-curing and hot air drying, allowing the cardboard to enter subsequent processing stages more quickly, thereby improving overall processing efficiency.

[0022] The segmented pressing assembly in this invention ensures the uniformity and stability of cardboard pressing. The silicone buffer sleeve reduces damage during the pressing process, ensuring the quality of the cardboard. It can also adapt to the processing needs of corrugated cardboard of different specifications and thicknesses. By adjusting the stroke of the cylinder, it can achieve pressing processing of cardboard of various thicknesses.

[0023] In this utility model, the mounting box is rotatably connected to one of the top plates via a hinge and fixed to the other top plate via a fastener, making it convenient to open the mounting box to maintain and replace the internal mid-wave infrared lamp tubes. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of a cardboard bonding device for corrugated cardboard processing provided in an embodiment of this utility model;

[0025] Figure 2 Another structural schematic diagram of the cardboard bonding device for corrugated cardboard processing provided in an embodiment of this utility model;

[0026] Figure 3 A schematic diagram of the top plate structure of the cardboard bonding device for corrugated cardboard processing provided in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the separation structure of the pressure roller and the silicone buffer sleeve in the cardboard bonding device for corrugated cardboard processing provided in this embodiment of the present invention.

[0028] Reference numerals: 1. Electric conveyor belt; 2. Support base; 3. Casters; 4. Leveling screw; 5. Hollow support; 6. Fixing frame; 7. Cylinder; 8. U-shaped mounting bracket; 9. Pressure roller; 10. Silicone buffer sleeve; 11. Sliding hole; 12. Guide rod; 13. Mounting box; 14. Hinge; 15. Cavity; 16. Medium-wave infrared lamp tube; 17. Fastener; 18. Hook; 19. Handle; 20. Vertical plate; 21. Horizontal bar; 22. Hot air blower; 23. Top plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0032] Example 1

[0033] Please refer to Figure 1-4 A cardboard bonding device, comprising:

[0034] The electric conveyor belt 1, model SEW motor-driven modular conveyor belt (MDS series), is equipped with a SINAMICS G120 frequency converter. The power supply is three-phase AC380V±10% connected to the frequency converter. The frequency converter outputs to the conveyor belt drive motor. The PLC sends speed commands to the frequency converter via the Profinet bus. The encoder feeds back speed signals to the PLC to form a closed-loop control. The bottom of the base frame on both sides of the electric conveyor belt 1 is fixedly equipped with the same support base 2, which provides stable support for the entire device. The top of the base frame on both sides of the electric conveyor belt 1 is fixedly equipped with a top plate 23. The two top plates 23 are sequentially equipped with a segmented pressing component, an infrared pre-curing component, and a hot air drying component.

[0035] The segmented pressing assembly is located at the starting end of the electric conveyor belt 1, including multiple fixed frames 6 equidistantly fixed on the top of two top plates 23. A cylinder 7 is fixedly installed at the center of the top of the fixed frame 6. The cylinder 7 is an SMC cylinder (CDJ2B series) with a magnetic ring switch, and the solenoid valve is an SMC solenoid directional valve (SY5120-5LZD-01). The solenoid valve control terminal is connected to a PLC (using S7-1500 series, CPU...). The 1516-3PN / DP digital output module (DC24V) connects the cylinder magnetic ring switch signal to the PLC input module. The air source processing unit (AW series filter + pressure reducing valve) is set to 0.6MPa. The pipeline uses PU hose (φ8mm). The output end of the cylinder 7 passes through the inner wall of the fixed frame 6 and is fixedly installed with a U-shaped mounting bracket 8. The two ends of the inner wall of the U-shaped mounting bracket 8 are rotatably mounted with the same pressure roller 9 through bearings. The pressure of the cylinder 7 is controlled by the PLC (0.3-0.8MPa adjustable). With the help of the cardboard thickness sensor (installed below the conveyor belt), the pressing force is adjusted in real time. For example, 0.5MPa pressure is triggered for 5 layers of corrugated cardboard (total thickness 7mm), and 0.7MPa is switched for 7 layers of cardboard (10mm). By adjusting the stroke of the cylinder 7, the pressing process of cardboard of various thicknesses can be realized. A silicone buffer sleeve 10 is fitted on the pressure roller 9 to ensure that there are no indentations on the surface of the cardboard during pressing.

[0036] To ensure the stability of the pressing process, multiple sliding holes 11 are equidistantly arranged on the fixed frame 6. Guide rods 12 are slidably arranged in the sliding holes 11. The bottom end of the guide rods 12 is fixedly connected to the top of the U-shaped mounting frame 8 to improve the movement stability of the pressure roller 9 and prevent deflection.

[0037] The infrared pre-curing component is located in the same mounting box 13 on the top of the two top plates 23. The mounting box 13 is located in the middle section of the electric conveyor belt 1. Two sets of medium-wave infrared lamps 16 are installed in the cavity 15 at the bottom of the mounting box 13 for infrared pre-curing of the pressed cardboard. The medium-wave infrared lamps 16 (MIR 2500W / 240V) have a wavelength of 3-8μm and a power of 2.5kW / each. They are equipped with ceramic reflectors. The solid-state relay is a Crydom H1D4890 (40A / 24-280VAC). The control logic is that the PLC controls the solid-state relay to switch on and off through the analog output module (0-10V) to achieve linear adjustment of the infrared power from 0-100%. The surface temperature of the lamp is monitored by an infrared thermometer (Raytek MI3), and the signal is fed back to the PLC for PID adjustment.

[0038] One side of the outer wall of the mounting box 13 is rotatably connected to the outer wall of one of the top plates 23 via a hinge 14, and the other side is fixed to the outer wall of another top plate 23 via two fasteners 17. Two hooks 18 are symmetrically fixed on the outer wall of the mounting box 13, and a handle 19 that works with the corresponding hook 18 is installed on the outer wall of one of the top plates 23, which facilitates the opening and closing of the mounting box 13 and makes it convenient to inspect the inside.

[0039] The hot air drying assembly is located at the end of the electric conveyor belt 1 and includes a vertical plate 20 fixedly mounted on the top of the top plate 23. A crossbar 21 is fixedly mounted between the two vertical plates 20. Two hot air blowers 22 are installed on the crossbar 21 at an angle downwards. The hot air blowers 22 are EBMPAPST high-temperature axial flow fans (A2G350-AA01-01). The control module is an Omron E5AC-T temperature controller. The start and stop of the hot air blowers 22 are controlled by a PLC digital output contactor (LC1D40). The heating element adopts a three-phase star connection. The temperature controller outputs an SSR signal to the heating element. The hot air blowers 22 perform hot air drying on the infrared pre-cured cardboard to further accelerate the curing of the adhesive.

[0040] This application can be used for corrugated cardboard processing, or for other fields applicable to this application.

[0041] Example 2

[0042] Improvements based on Example 1:

[0043] Paperboard bonding equipment used in corrugated paperboard processing, which is applied in the field of corrugated paperboard processing;

[0044] Please refer to Figure 1-2 The bottom of the support base 2 is fixedly equipped with two rows of casters 3. The casters 3 are polyurethane wheels of the TENTE 8200 series. With the help of brake pads, they can be locked in place to facilitate the movement of the device. At the same time, two rows of leveling screws 4 are also fixedly installed. Hollow supports 5 are threaded on the leveling screws 4. The hollow supports 5 are made of nylon and the contact surface is embedded with rubber shock-absorbing pads for contact with the ground. By screwing the hollow supports 5 into contact with the ground, the device can be leveled and placed.

[0045] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric conveyor belt 1, cylinder 7, mid-wave infrared lamp 16 and hot air blower 22 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0046] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A board bonding device for corrugated board processing, characterized in that include: An electric conveyor belt (1) is provided with a support base (2) fixedly installed at the bottom of the base frame on both sides of the electric conveyor belt (1). A top plate (23) is fixedly installed on the top of the base frame on both sides of the electric conveyor belt (1). A segmented pressing component, an infrared pre-curing component and a hot air drying component are sequentially installed on the two top plates (23). The infrared pre-curing component includes the same mounting box (13) set on the top of the two top plates (23), the mounting box (13) is located in the middle section of the electric conveyor belt (1), and two sets of medium-wave infrared lamps (16) are installed in the cavity (15) at the bottom of the mounting box (13). The hot air drying assembly includes a vertical plate (20) fixedly installed on the top of the top plate (23), and a crossbar (21) fixedly installed between the two vertical plates (20). Two hot air blowers (22) are installed on the crossbar (21) at an angle downwards, and both hot air blowers (22) are located at the end of the electric conveyor belt (1).

2. The cardboard bonding device for corrugated cardboard processing according to claim 1, characterized in that, The segmented pressing assembly includes multiple fixed frames (6) that are equidistantly fixed on the top of the two top plates (23). The multiple fixed frames (6) are all located at the starting end of the electric conveyor belt (1). A cylinder (7) is fixedly installed at the center of the top of the fixed frame (6). The output end of the cylinder (7) passes through the inner wall of the fixed frame (6) and is fixedly installed with a U-shaped mounting frame (8). The two ends of the inner wall of the U-shaped mounting frame (8) are rotatably mounted with the same pressure roller (9) through bearings.

3. The cardboard bonding device for corrugated cardboard processing according to claim 2, characterized in that, A silicone buffer sleeve (10) is fitted onto the pressure roller (9).

4. The cardboard bonding apparatus for corrugated cardboard processing according to claim 2, characterized in that, The fixing frame (6) is provided with a plurality of sliding holes (11) at equal intervals. A guide rod (12) is slidably arranged in the sliding hole (11). The bottom end of the guide rod (12) is fixedly connected to the top of the U-shaped mounting frame (8).

5. The cardboard bonding apparatus for corrugated cardboard processing according to claim 1, characterized in that, One side of the outer wall of the mounting box (13) is rotatably connected to the outer wall of one of the top plates (23) via a hinge (14), and the other side of the mounting box (13) is fixed to the outer wall of another top plate (23) via two fasteners (17). Two hooks (18) are symmetrically fixed on the outer wall of the mounting box (13), and a buckle (19) that cooperates with the corresponding hook (18) is installed on the outer wall of one of the top plates (23).

6. The cardboard bonding apparatus for corrugated cardboard processing according to claim 1, characterized in that, The bottom of the support base (2) is fixedly equipped with two rows of universal wheels (3) for moving the device and two rows of leveling screws (4) for leveling the device. The leveling screws (4) are threadedly connected to hollow supports (5) for contacting the ground.

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