A box opening mechanism of a packaging box

Abstract

The utility model provides a kind of opening mechanism of packing box, it includes the conveying mechanism and unfolding mechanism installed on main frame, and feeding device is arranged between conveying mechanism and unfolding mechanism;The conveying mechanism is used to convey packing box into the working range of feeding device, and is conveyed to unfolding mechanism via the feeding device;The feeding device includes mounting bracket fixedly installed on main frame, and movable slot is arranged in the middle of mounting bracket, feeding slider and feeding slide rail connected with it are respectively installed on both sides of movable slot, and connecting plate is connected across the upper end of two feeding slide rails;The feeding device further includes suction cup, and the suction cup is installed with connecting plate by extension plate, and the suction cup is installed towards conveying mechanism.The utility model has the beneficial effects that: the way of linear drive is formed by the cooperative work of slider and slide rail, synchronous belt and pulley, which simplifies the complexity of structure, the motion path is simple, and it is convenient for user maintenance.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, specifically a box opening mechanism for packaging boxes. Background Technology

[0002] In modern, high-efficiency packaging production lines, automated equipment plays a crucial role in the processes of gripping, unfolding, forming, filling, and sealing packaging boxes. To achieve accurate and high-speed box opening, traditional packaging box opening (or forming) mechanisms typically rely on complex linkage or cam mechanisms, using the combined motion of mechanical linkages to achieve gripping and unfolding along specific paths; or they employ multi-axis servo manipulators, utilizing high-precision servo systems to control the robotic arm to perform complex motion trajectory planning in three-dimensional space; or they use multi-stage pneumatic or hydraulic actuators, in conjunction with multiple cylinders, guide rails, and fixtures, to achieve multi-step box opening actions.

[0003] First, regardless of whether a sophisticated multi-stage linkage or cam mechanism is used, or a high-degree-of-freedom multi-axis servo manipulator is employed, its core mechanical structure and control system are excessively complex. This complexity necessitates a large number of high-precision machined parts, such as custom-made cams, complex linkage arms, and high-precision guide components, directly leading to extremely high manufacturing costs. The large number of structural components also makes the assembly process complex and time-consuming, further increasing production costs. Second, structural complexity also brings significant challenges to maintenance and troubleshooting. When equipment malfunctions, maintenance personnel must have a deep understanding of the complex mechanical motion principles and electrical control systems to quickly locate the problem, significantly increasing maintenance time and labor costs. Especially for mechanisms relying on complex linkages or cams, replacing parts or performing precision adjustments often requires disassembling numerous peripheral components, severely impacting production efficiency. Third, complex mechanisms generally exhibit poor flexibility and adaptability. When a production line needs to switch to packaging boxes of different sizes or shapes, it often requires replacing linkages, adjusting cam curves, or reprogramming complex manipulator motion trajectories, which is inefficient and cumbersome, limiting the flexibility of the production line. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a packaging box opening mechanism that is simple in structure, low in manufacturing cost, linearly driven reciprocating motion, accurately guides and positions the packaging box, and is efficient and stable in opening operation.

[0005] The objective of this utility model is achieved in the following manner: a box opening mechanism for a packaging box, comprising a conveying mechanism and an unfolding mechanism mounted on a main frame, wherein a feeding device is provided between the conveying mechanism and the unfolding mechanism; the conveying mechanism is used to convey the packaging box into the working range of the feeding device, and then convey it to the unfolding mechanism via the feeding device; the feeding device includes a mounting bracket fixedly mounted on the main frame, a movable groove provided through the middle of the mounting bracket, a feeding slider and a feeding slide rail connected thereto mounted on both sides of the movable groove, and a connecting plate connected to the upper end of the two feeding slide rails; the feeding device also includes a suction cup, which is mounted to the connecting plate via an extension plate, and the suction cup is mounted facing the conveying mechanism; the feeding device also includes a feeding timing belt, and the connecting plate is fixed to the feeding timing belt; a driving pulley and a driven pulley are respectively fitted at both ends of the feeding timing belt, and a feeding drive motor is connected to the driving pulley to drive the connecting plate to move linearly along the feeding slider.

[0006] The unfolding mechanism includes a discharge conveyor belt installed in the main frame, one side of which is connected to the feeding device via a connecting platform; the connecting platform is equipped with a limiting plate that extends toward the discharge conveyor belt to limit the position of the packaging box when it enters the working range of the unfolding mechanism.

[0007] The unfolding mechanism also includes two diagonally distributed clamping plates. A telescopic rod is installed on one side of each clamping plate. The telescopic rod is used to drive the clamping plates to extend and clamp the packaging box, so that the bottom of the packaging box is in the folded and sealed position.

[0008] The telescopic rod is a cylinder-driven telescopic rod.

[0009] A position detector is installed on the other side of the discharge conveyor belt to detect the position of the packaging box on the discharge conveyor belt.

[0010] The discharge conveyor belt is equipped with symmetrically distributed guide ramps. Two guide ramps together form a discharge trough. The unfolded packaging box is sent into the discharge trough by the discharge conveyor belt for output.

[0011] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0012] 2. The linear drive is achieved by using the coordinated operation of sliders, slide rails, timing belts, and pulleys, which simplifies the structural complexity, simplifies the motion path, and facilitates user maintenance.

[0013] 3. It accurately performs linear reciprocating motion, providing stable and efficient transport of packaging boxes.

[0014] 4. The clamping plate holds the packaging box to make the bottom fold and seal it, and reinforces the opening state of the packaging box. The unfolding and forming work is reliable and stable. The cylinder has the characteristics of fast response, compact structure and low manufacturing cost.

[0015] 5. Monitor the opening status of packaging boxes in real time to improve the quality of output materials and ensure the continuity of the production line. Attached Figure Description

[0016] Figure 1 This is a rendering of the final assembly of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure behind the hidden part of the main frame in this utility model.

[0018] Figure 3 This is an exploded view of the unfolding mechanism and the main frame in this utility model.

[0019] Figure 4 This is an exploded view of the feeding device and the main frame in this utility model.

[0020] Figure 5 This is a schematic diagram of the feeding device in this utility model.

[0021] Figure 6 This is a schematic diagram of the unfolding mechanism in this utility model. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings. A box opening mechanism includes a conveying mechanism 2 and an unfolding mechanism mounted on a main frame 1. A feeding device is provided between the conveying mechanism 2 and the unfolding mechanism. The conveying mechanism 2 is used to convey the packaging box into the working range of the feeding device and then to the unfolding mechanism via the feeding device. The feeding device includes a mounting bracket 5 fixedly mounted on the main frame 1. A movable groove 51 is provided through the middle of the mounting bracket 5. Feeding sliders 61 and feeding rails 62 connected to the movable groove 51 are respectively mounted on both sides of the movable groove 51. A connecting plate 63 is connected to the upper end of the two feeding slide rails 62; the feeding device also includes a suction cup 7, which is installed to the connecting plate 63 through an extension plate 71, and the suction cup 7 is installed facing the conveying mechanism 2; the feeding device also includes a feeding synchronous belt 81, and the connecting plate 63 is fixed on the feeding synchronous belt 81; the two ends of the feeding synchronous belt 81 are respectively fitted with a driving pulley 82 and a driven pulley 83, and the feeding drive motor 84 is connected to the driving pulley 82 to drive the connecting plate 63 to move linearly along the feeding slider 61.

[0023] Flattened packaging boxes are conveyed by the conveyor mechanism to the working range of the feeding device to complete the feeding operation. At this time, the feeding drive motor of the feeding device drives the drive pulley, which in turn drives the feeding timing belt to rotate through the driven pulley. Since the suction cups performing the gripping action are fixed to the feeding timing belt through the extension plate and connecting plate, and are guided by the feeding slide rail on the feeding slider, the suction cups perform precise linear reciprocating motion. It should be noted that: when the packaging box is first gripped, the suction cups extend towards the conveyor mechanism to attract the packaging box to be opened. At this time, the feeding drive motor drives in the reverse direction, and under the guidance of the slider and slide rail, the suction cups push the packaging box into the unfolding mechanism, entering the working range of the unfolding mechanism for unfolding operation; after the packaging box has been unfolded, it is discharged. At this time, the feeding drive motor drives in the forward direction, and the suction cups extend towards the conveyor mechanism again to attract the next packaging box to be opened. It adopts a simple structure with components such as pulleys, synchronous belts, and slide rails, and the movement process is reliable and stable. By utilizing the cooperation between the slider and the slide rail, it ensures that the suction cup can accurately perform linear drive during the gripping and conveying process, with high positioning accuracy. It effectively replaces traditional complex and cumbersome drive components, reduces manufacturing costs, and improves market competitiveness.

[0024] The unfolding mechanism includes a discharge conveyor belt 3 installed in the main frame 1. One side of the discharge conveyor belt 3 is connected to the feeding device through a connecting platform 33. A limiting plate 34 is installed on the connecting platform 33. The limiting plate 34 extends toward the discharge conveyor belt 3 and is used to limit the position of the packaging box when it enters the working range of the unfolding mechanism.

[0025] When the feeding device conveys the packaging box to the unfolding mechanism, the box smoothly transitions from the feeding device area to the discharge conveyor belt via the connecting platform. At this time, a limiting plate on the connecting platform extends towards the discharge conveyor belt. When the packaging box is conveyed to the preset position, it adheres to the inner wall of the limiting plate, guiding and restricting the box's position to ensure precise entry into the unfolding mechanism and prevent opening failure due to positioning deviation. Secondly, the limiting plate acts as the fixed end for the packaging box, while the side of the box held in place by the suction cup acts as the movable end, allowing for pulling. When the packaging box is pushed to the preset position, it is simultaneously opened to the initial opening state.

[0026] The unfolding mechanism also includes two diagonally distributed clamping plates 35. A telescopic rod 9 is installed on one side of each clamping plate 35. The telescopic rod 9 is used to drive the clamping plate 35 to extend and clamp the packaging box, so that the bottom of the packaging box is in the folded and sealed position.

[0027] As the packaging box is pushed into the preset position by the suction cup, the clamping plates are driven by the telescopic rod. The diagonally distributed clamping plates extend towards the opposite corners of the packaging box, clamping it at those corners to fix the main body shape and position of the box. Simultaneously, they apply lateral support, assisting the box in opening from its initial open state to its fully unfolded state. During this clamping process, the bottom flap of the box automatically folds and seals the bottom. This combination of clamping plates and telescopic rods not only provides active and reliable external support and forced driving force for the unfolding and shaping of the packaging box, ensuring its stable shape after unfolding, but also boasts a compact and simple structure, optimizing the use of space.

[0028] The telescopic rod 9 is a cylinder-driven telescopic rod. Cylinders have the characteristics of fast action response, low cost, and simple maintenance, which meet the high-speed operation of packaging machinery and further reduce the manufacturing cost of packaging machinery and equipment.

[0029] A position detector 4 is installed on the other side of the discharge conveyor belt 3 to detect the position of the packaging box on the discharge conveyor belt 3. The position detector monitors the output status of the packaging box in real time, detecting whether the packaging box is in the correct conveying position, which facilitates timely correction of the system or the issuance of abnormal alarms, improves the automation and quality control level of the production process, effectively prevents unqualified or displaced packaging boxes from entering the next process, and ensures the continuous and stable operation of the production line.

[0030] The discharge conveyor belt 3 is provided with symmetrically distributed guide ramps 31. The two guide ramps 31 together form a discharge trough 32. The unfolded packaging box is sent into the discharge trough 32 for output via the discharge conveyor belt 3.

[0031] Symmetrically distributed guide ramps are installed on the discharge conveyor belt. The ramps on both sides provide lateral support and guidance for the packaging boxes, allowing them to be output smoothly according to the preset correct state and route, avoiding tipping or accumulation, and ensuring the progress of the next process. The mechanical passive guiding structure is simple and reliable, requiring no complex control, thus improving the reliability of the discharge process.

[0032] In summary: Flattened packaging boxes are conveyed by the conveyor mechanism to the working range of the feeding device to complete the feeding operation. The feeding device uses a feeding drive motor to drive the feeding synchronous belt, which in turn drives the suction cup to perform precise reciprocating motion through the linear drive composed of the slide rail and slider, thereby completing the feeding, linear conveying, and initial opening and shaping steps of the packaging box. It should be noted that when the packaging box is first grasped, the suction cup extends towards the conveyor mechanism to attract the packaging box to be opened. At this time, the feeding drive motor drives in the reverse direction, and under the guidance of the slider and slide rail, the suction cup moves the packaging box into the unfolding mechanism, entering the working range of the unfolding mechanism for unfolding operation. After the packaging box has been unfolded, it is discharged. At this time, the feeding drive motor drives in the forward direction, and the suction cup extends again towards the conveyor mechanism to attract the next packaging box to be opened.

[0033] In this process, when the suction cup adheres the packaging box to the limiting plate, the connecting platform and the limiting plate guide and restrict the packaging box. Subsequently, a telescopic rod drives diagonally distributed clamping plates to extend, clamping the packaging box and assisting in folding and sealing its bottom, further securing the box during opening. After opening, shaping, and sealing, a position detector monitors the packaging box. Boxes that pass the monitoring are smoothly and orderly fed into the next process via a conveyor belt with a guide ramp. The opening process is simple and efficient, the linear transmission method is highly efficient, and the reliable mechanical limiting and clamping structure effectively simplifies structural complexity, reduces manufacturing costs, and ensures high speed, stability, and precision during the opening and forming process, thus making it widely applicable.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A box opening mechanism for a packaging box, characterized in that: It includes a conveying mechanism (2) and an unfolding mechanism installed on the main frame (1), and a feeding device is provided between the conveying mechanism (2) and the unfolding mechanism; The conveying mechanism (2) is used to convey the packaging box into the working range of the feeding device, and then convey it to the unfolding mechanism via the feeding device; The feeding device includes a mounting bracket (5) fixedly installed on the main frame (1), a movable groove (51) is provided through the middle of the mounting bracket (5), a feeding slider (61) and a feeding slide rail (62) connected thereto are respectively installed on both sides of the movable groove (51), and a connecting plate (63) is connected across the upper end of the two feeding slide rails (62). The feeding device also includes a suction cup (7), which is installed to the connecting plate (63) via an extension plate (71) and is installed toward the conveying mechanism (2); The feeding device also includes a feeding timing belt (81), and the connecting plate (63) is fixed on the feeding timing belt (81). The feeding timing belt (81) has a driving pulley (82) and a driven pulley (83) respectively fitted at both ends. The feeding drive motor (84) is connected to the driving pulley (82) to drive the connecting plate (63) to move linearly along the feeding slider (61).

2. The box opening mechanism of a packaging box according to claim 1, characterized in that: The unfolding mechanism includes a discharge conveyor belt (3) installed in the main frame (1), one side of which is connected to the feeding device via a connecting platform (33); the connecting platform (33) is equipped with a limiting plate (34), which extends toward the discharge conveyor belt (3) to limit the position of the packaging box when it enters the working range of the unfolding mechanism.

3. The box opening mechanism of a packaging box according to claim 2, characterized in that: The unfolding mechanism also includes two diagonally distributed clamping plates (35), and a telescopic rod (9) is installed on one side of the clamping plate (35). The telescopic rod (9) is used to drive the clamping plate (35) to extend and clamp the packaging box, so that the bottom of the packaging box is in the folded and sealed position.

4. The box opening mechanism of a packaging box according to claim 3, characterized in that: The telescopic rod (9) is a cylinder-driven telescopic rod.

5. The box opening mechanism of a packaging box according to claim 2, characterized in that: A position detector (4) is provided on the other side of the discharge conveyor belt (3) to detect the position of the packaging box on the discharge conveyor belt (3).

6. The box opening mechanism of a packaging box according to claim 2, characterized in that: The discharge conveyor belt (3) is provided with symmetrically distributed guide ramps (31), and the two guide ramps (31) together form a discharge trough (32). The unfolded packaging box is sent into the discharge trough (32) for output via the discharge conveyor belt (3).

Images