An automatic top cover closing device for tobacco boxes

Abstract

This invention provides an automatic lid-closing device for tobacco boxes, particularly suitable for boxes where the front, rear, left, and right lids are all tilted outwards and downwards. The main mechanism involves a side cylinder driving an upward lifting rod to flip the front and rear lids upright. Then, a top cylinder drives an inner closing mechanism and a lower pressure plate to tilt the front and rear lids inwards before the lower pressure plate presses them down to close them. A front and rear lid limiting mechanism prevents the closed lids from rebounding. As the tobacco box is conveyed forward via a conveyor roller, guide rods first lift the left and right lids upright before closing them, and finally, lid limiting rollers prevent the lids from popping up. The entire process is automated, reducing manual labor intensity.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, and specifically to an automatic cigarette box lid closing device. Background Technology

[0002] To accommodate the pre-compression requirements of tobacco leaf packing, the top of the tobacco box needs to be tilted outward and downward. After the tobacco leaves are packed, the top of the tobacco box is closed manually and then sent into the packing and bundling process. The tobacco box is relatively large and requires two people to close the top, which is labor-intensive and wastes manpower.

[0003] In view of the above problems, the inventors of this invention have finally obtained this invention after a long period of research and practice. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an automatic cigarette box top cover closing device that automatically completes the work of closing the cigarette box top cover.

[0005] The technical solution adopted in this invention is as follows:

[0006] An automatic cigarette box lid closing device is provided, including a cigarette box conveying channel, wherein the cigarette box conveying channel is provided with front and rear lid closing stations and left and right lid closing stations in sequence along the conveying direction; a lifting mechanism is provided on one side of the front and rear lid closing stations, and an inner closing and pressing mechanism is provided above the front and rear lid closing stations; a front and rear lid limiting mechanism and a left and right lid closing mechanism are provided above the left and right lid closing stations.

[0007] The lifting mechanism includes a flip-up rod that can be rotated under the drive of the first driving device, used to lift the front and rear top covers of the cigarette box from the outward-open state; the inner closing and pressing mechanism includes an inner closing mechanism, a pressing plate and a second driving device, the inner closing mechanism and the pressing plate move synchronously under the drive of the second driving device, respectively performing flipping and lifting actions.

[0008] The front and rear top cover limiting mechanism is used to connect the lower pressure plate and continue to maintain the closed state of the front and rear top covers; the left and right top cover closing mechanism includes a left guide rod and a right guide rod arranged symmetrically.

[0009] Furthermore, both the left guide rod and the right guide rod include a first section and a second section. The first sections of the two guide rods are arranged parallel to each other along the conveying direction and gradually rise, while the second sections of the two guide rods gradually approach each other and gradually descend along the conveying direction.

[0010] Furthermore, the height of the first section of the guide rod relative to the cigarette box conveying channel is adjustable, and the relative distance between the ends of the second section of the guide rod is adjustable.

[0011] Furthermore, the inner closing mechanism includes a pressure claw and a linkage mechanism. When the lower pressure plate descends, the pressure claw is driven to flip inward through the linkage mechanism. When the lower pressure plate rises, the pressure claw is driven to flip outward through the linkage mechanism.

[0012] Furthermore, during the descent of the lower pressure plate, the pressure claws contact the erected front and rear top covers before the lower pressure plate, causing them to close inward.

[0013] Furthermore, the lifting rod includes a swing rod and two lifting arms, and the first driving device drives the two lifting arms to flip upward from both sides of the tobacco box through the swing rod.

[0014] Furthermore, the front and rear top cover limiting mechanism is located between the left guide rod and the right guide rod, and includes front and rear top cover limiting plates. The front and rear top cover limiting plates extend along the conveying direction and are bent upward at the end near the lower pressure plate.

[0015] Furthermore, it also includes a fixed bracket, and the front and rear top cover limiting mechanism also includes a vertically arranged column, one end of which is fixed to the bracket, and the other end is connected to the front and rear top cover limiting plate through a spring.

[0016] Furthermore, a guide plate is erected on the upper surface of the front and rear top cover limiting plates along its length centerline.

[0017] Furthermore, along the conveying direction, a top cover limiting roller is provided behind the left and right top cover closing station, and the top cover limiting roller is located above the cigarette box conveying channel.

[0018] Furthermore, the first driving device and the second driving device are cylinders.

[0019] Furthermore, the inner pressing mechanism also includes a guide rod and a fixed mounting plate. The second driving device is fixed on the mounting plate. The mounting plate is provided with a guide hole. The guide rod cooperates with the guide hole. One end of the guide rod is fixedly connected to the pressing plate, thereby guiding the pressing plate when it rises and falls.

[0020] This invention is particularly suitable for boxes where the front, rear, left, and right top covers are all tilted outwards and downwards. The main mechanism involves a side cylinder driving an upward lifting rod to flip the front and rear top covers upright. Then, a top cylinder drives an inner closing mechanism and a lower pressure plate to tilt the front and rear top covers inwards before the lower pressure plate presses them down to close them. As the tobacco box is conveyed forward via a conveyor roller, guide rods first lift the left and right top covers before closing them. Finally, top cover limiting rollers prevent the top covers from popping up. The entire process is automated, reducing manual labor intensity. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 An isometric side view of an embodiment of the automatic cigarette box lid closing device of the present invention is shown;

[0023] Figure 2 A front view schematic diagram of an automatic cigarette box lid closing device according to an embodiment of the present invention is shown;

[0024] Figure 3 A schematic diagram of the right side of the automatic cigarette box lid closing device according to an embodiment of the present invention is shown;

[0025] Figure 4 A top view schematic diagram of an automatic cigarette box lid closing device according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram illustrating the steps of erecting the front and rear top covers of the cigarette box according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of the inward tilting step of the front and rear top covers of the cigarette box according to an embodiment of the present invention is shown;

[0028] Figure 7 A schematic diagram illustrating the steps of closing the front and rear top covers of a cigarette box according to an embodiment of the present invention is shown;

[0029] Figure 8 A schematic diagram illustrating the steps of raising the left and right top covers of the cigarette box according to an embodiment of the present invention is shown;

[0030] Figure 9 A schematic diagram illustrating the steps of closing the left and right top covers of the cigarette box according to an embodiment of the present invention is shown. Detailed Implementation

[0031] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] like Figure 1As shown, the automatic cigarette box lid closing device includes a cigarette box conveying channel 1. The cigarette box is placed on the cigarette box conveying channel 1 for transmission. Optionally, the cigarette box conveying channel 1 is a roller conveyor. The initial state of the cigarette box is that the front, rear, left, and right lids are all tilted outward and downward. The cigarette box conveying channel 1 is provided with front and rear lid closing stations and left and right lid closing stations in sequence along the conveying direction. A lifting mechanism is provided on one side of the front and rear lid closing station, and an inner closing and pressing mechanism is provided above the front and rear lid closing station. A front and rear lid limiting mechanism and a left and right lid closing mechanism are provided above the left and right lid closing station. The lifting mechanism includes a lifting rod 2 that can be flipped under the drive of the first driving device 4, used to lift the front and rear lids of the cigarette box from the outward opening state. The inner closing and pressing mechanism includes an inner closing mechanism, a pressing plate 17, and a second driving device 13. The inner closing mechanism and the pressing plate 17 move synchronously under the drive of the second driving device 13, respectively performing flipping and lifting actions. The front and rear top cover limiting mechanism is used to connect the lower pressure plate and continue to keep the front and rear top covers closed; the left and right top cover closing mechanism includes a left guide rod and a right guide rod arranged symmetrically.

[0037] like Figures 1-9 As shown, in one embodiment, the lifting rod 2 includes a swing rod 18 and two lifting arms 21. The first driving device 4 drives the two lifting arms 21 to flip upward from both sides of the tobacco box 100 via the swing rod 18, thus raising the front and rear top covers 101 and 102. More specifically, a bracket 3 is fixedly provided, such as a bracket 3 that can be fixed to the ground. The lifting mechanism, the inner closing and pressing mechanism, the front and rear top cover limiting mechanism, and the left and right top cover closing mechanism are all mounted on the bracket 3. The swing rod 18 is hinged to the bracket 3, with one end connected to the first driving device 4 and the other end connected to the lifting rod 2, so that the first driving device 4 can drive the swing rod 18 to further flip the lifting rod 2. Preferably, the first driving device 4 is a cylinder. The height at which the front and rear top covers 101 and 102 are raised can be controlled by the stroke of the cylinder. After the lifting mechanism has reached its position, the front and rear top covers 101 and 102 of the tobacco box are still in a slightly outward tilted state.

[0038] The inner pressing mechanism also includes two guide rods 14 and a mounting plate 22. The mounting plate 22 is fixed on the bracket 3, and the second drive device 13 is fixed on the mounting plate 22. The mounting plate 22 has two guide holes, and the guide rods 14 cooperate with the guide holes. One end of the guide rod 14 is fixedly connected to the pressing plate 17, so that the guide rod 14 guides the pressing plate 17 when it is raised and lowered. Preferably, the second drive device 13 is a cylinder, and the end of the cylinder's actuator is connected to the middle of the pressing plate 17 through a connecting block. The two guide rods 14 are located on both sides of the cylinder. The two guide rods 14 prevent the pressing plate 17 from tilting and rotating, and the pressing height of the front and rear top covers of the cigarette box can also be controlled by the cylinder stroke. The internal closing mechanism includes two pressure claws 20 and two linkage mechanisms 16. The two linkage mechanisms 16 are respectively located on both sides of the cylinder, corresponding to the positions of the front and rear top covers 101 and 102. Each linkage mechanism 16 drives one pressure claw 20. The two ends of the linkage mechanism 16 are respectively hinged to the lower pressure plate 17 and the bracket 3. When the lower pressure plate 17 descends, it drives the pressure claws 20 to flip inward through the linkage mechanism 16. When the lower pressure plate 17 rises, it drives the pressure claws 20 to flip outward through the linkage mechanism 16. During the descent of the lower pressure plate 17, the pressure claws 20 contact the erected front and rear top covers 101 and 102 before the lower pressure plate 17, and cause them to close inward. Thus, the lower pressure plate 17 can press the front and rear top covers 101 and 102 of the cigarette box down and close them.

[0039] The left and right guide rods of the left and right top cover closing mechanism each include a first section 6 and a second section 8. The first sections 6 of the two guide rods are arranged parallel to each other along the conveying direction and gradually rise, while the second sections 8 of the two guide rods gradually approach each other and gradually descend along the conveying direction. The height of the first section of the guide rod relative to the cigarette box conveying channel is adjustable, and the relative distance between the ends of the second sections of the guide rod is adjustable. Specifically, the first section 6 of the guide rod is mounted on the bracket 3 via the first connecting rod 5, and the second section 8 is mounted on the bracket 3 via the second connecting rod 9. The second connecting rod 9 is connected to the end of the second section 8. The bracket 3 is provided with a longitudinally arranged upward adjustment hole 51 and a horizontally arranged downward adjustment hole 91. The first connecting rod 5 cooperates with the upward adjustment hole 51 to slide longitudinally, so that the standing height of the left and right top covers 103 and 104 of the cigarette box 100 conveyed by the cigarette box conveying channel 1 is adjusted by the longitudinal sliding of the first connecting rod 5. The second connecting rod 9 cooperates with the downward adjustment hole 91 to slide left and right, so that the left and right top covers 103 and 104 of the cigarette box 100 conveyed by the cigarette box conveying channel 1 are closed downward. The height of the cover can be adjusted by the left and right sliding of the second connecting rod 9.

[0040] The front and rear top cover limiting mechanism is located between the left and right guide rods to prevent the closed front and rear top covers from rebounding. It includes a front and rear top cover limiting plate 12 and a vertically arranged support column 11. The front and rear top cover limiting plate 12 extends along the conveying direction and bends upward at the end near the lower pressure plate. One end of the support column 11 is fixed to the bracket 3, and the other end is connected to the front and rear top cover limiting plate 12 through a spring 10. The spring 10 can automatically extend and retract to adapt to the height requirements of different tobacco boxes. A guide plate 121 is vertically arranged on the upper surface of the front and rear top cover limiting plate 12 along its length centerline. Narrow edges 122 are formed on both sides of the guide plate 121. After the left and right top covers 103 and 104 are closed by the left and right top cover closing mechanism, they are pressed onto the narrow edges 122. As the tobacco box moves, the guide plate 121 is guided and slid out through the gap formed by the left and right top covers 103 and 104.

[0041] Along the conveying direction, a top cover limiting roller 7 is provided behind the left and right top cover closing station. The top cover limiting roller 7 is located above the cigarette box conveying channel 1. The cigarette boxes sent from the left and right top cover closing station are sent into the bottom of the top cover limiting roller 7 to prevent the fully closed top cover from popping up.

[0042] The above are merely preferred embodiments of the present invention and are illustrative rather than restrictive. The structure and connection methods of the components in the present invention can be varied, and any equivalent transformations and improvements made based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. An automatic top-closing device for a tobacco box, comprising a tobacco box conveying channel, characterized in that, The cigarette box conveying channel is provided with front and rear top cover closing stations and left and right top cover closing stations in sequence along the conveying direction; a lifting mechanism is provided on one side of the front and rear top cover closing station, and an inner closing and pressing mechanism is provided above the front and rear top cover closing station; a front and rear top cover limiting mechanism and a left and right top cover closing mechanism are provided above the left and right top cover closing station. The lifting mechanism includes a flip-up rod that can be rotated under the drive of the first driving device, used to lift the front and rear top covers of the cigarette box from the outward-open state; the inner closing and pressing mechanism includes an inner closing mechanism, a pressing plate and a second driving device, the inner closing mechanism and the pressing plate move synchronously under the drive of the second driving device, respectively performing flipping and lifting actions. The front and rear top cover limiting mechanism is used to connect the lower pressure plate and continue to maintain the closed state of the front and rear top covers; the left and right top cover closing mechanism includes a left guide rod and a right guide rod arranged symmetrically. The front and rear top cover limiting mechanism is located between the left guide rod and the right guide rod, and includes front and rear top cover limiting plates for pressing on the closed front and rear top covers. The front and rear top cover limiting plates extend along the conveying direction and are bent upward at the end near the lower pressure plate. A guide plate is vertically arranged on the upper surface of the front and rear top cover limiting plates along its length center line. The two sides of the guide plate form narrow edges. After the left and right top covers are closed by the left and right top cover closing mechanism, they are pressed on the narrow edges. As the cigarette box moves, the guide plate is guided and slid out at the gap formed by the left and right top covers.

2. The automatic top cover closing device for a tobacco box as described in claim 1, characterized in that, Both the left guide rod and the right guide rod include a first section and a second section. The first section of the two guide rods is arranged parallel to each other along the conveying direction and gradually rises. The second section of the two guide rods gradually approaches each other and gradually descends along the conveying direction.

3. The automatic top cover closing device for a tobacco box as described in claim 2, characterized in that, The height of the first section of the guide rod relative to the cigarette box conveying channel is adjustable, and the relative distance between the ends of the second section of the guide rod is adjustable.

4. The automatic top cover closing device for a tobacco box as described in claim 1, characterized in that, The inner closing mechanism includes a pressure claw and a linkage mechanism. When the lower pressure plate descends, the pressure claw is driven to flip inward through the linkage mechanism. When the lower pressure plate rises, the pressure claw is driven to flip outward through the linkage mechanism.

5. The automatic top cover closing device for a tobacco box as described in claim 4, characterized in that, During the descent of the lower pressure plate, the pressure claws contact the erected front and rear top covers before the lower pressure plate, causing them to close inward.

6. The automatic closing lid device for a tobacco box as described in claim 1, characterized in that, The lifting rod includes a swing rod and two lifting arms. The first driving device drives the two lifting arms to flip upward from both sides of the tobacco box through the swing rod.

7. The automatic top cover closing device for a tobacco box as described in claim 1, characterized in that, It also includes a fixed bracket, and the front and rear top cover limiting mechanism also includes a vertically arranged column, one end of which is fixed to the bracket, and the other end is connected to the front and rear top cover limiting plate through a spring.

8. The automatic closing device for a tobacco box as described in claim 1, characterized in that, Along the conveying direction, a top cover limiting roller is provided behind the left and right top cover closing station, and the top cover limiting roller is located above the cigarette box conveying channel.

9. The automatic closing lid device for a tobacco box as described in claim 1, characterized in that, The first driving device and the second driving device are cylinders.

10. The automatic closing lid device for a tobacco box as described in claim 1, characterized in that, The inner pressing mechanism also includes a guide rod and a fixed mounting plate. The second driving device is fixed on the mounting plate. The mounting plate has a guide hole. The guide rod cooperates with the guide hole. One end of the guide rod is fixedly connected to the pressing plate, so that the guide rod guides the pressing plate when it rises and falls.

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