A cigarette package conveying belt wheel self-adaptive tensioning device and a cigarette package conveying system

Abstract

The application provides a cigarette package conveying belt wheel self-adaptive tensioning device and a cigarette package conveying system. The tensioning device is used for tensioning a conveying belt. The tensioning device comprises a driving wheel, a driven wheel, a tensioning wheel and a tensioning driving mechanism. The conveying belt forms a closed loop and wraps around the driving wheel, the driven wheel and the tensioning wheel. The tensioning driving mechanism comprises a first driver. The first driver is connected with an axle of the tensioning wheel to change the position of the tensioning wheel within a preset range. The conveying belt forms a closed loop. The axes of the driving wheel, the driven wheel and the tensioning wheel are parallel and located at a set position inside the conveying belt. The driving wheel, the driven wheel and the tensioning wheel abut at the set position inside the conveying belt. The first driver of the tensioning driving mechanism is connected with the axle of the tensioning wheel to change the position of the tensioning wheel within a preset range. The first driver is controlled to drive the tensioning wheel to move. The position of the tensioning wheel is changed to re-tension the conveying belt.

Description

Technical Field

[0001] This utility model relates to the field of packaging machines, and more specifically, to an adaptive tensioning device for a cigarette pack conveyor belt pulley and a cigarette pack conveying system. Background Technology

[0002] For cigarette packs bonded with cold glue, the ZB416A packaging machine requires a structure to apply pressure to the packs and maintain it for a period of time because the glue needs time to solidify and is prone to deformation during this period. The typical procedure is to vertically insert the cigarette packs into a conveyor belt after they are formed. The upper and lower conveyor belts clamp the packs, maintaining pressure on the bonding surface. The packs enter the conveyor belt from the beginning and move forward synchronously with it, exiting at the end, allowing ample drying time. Furthermore, the conveyor belt can hold a large number of cigarette packs for simultaneous drying, saving working space.

[0003] After prolonged operation, the conveyor belt for cigarette packs gradually wears out, causing it to lengthen and resulting in insufficient tension. This leads to problems such as belt slippage and asynchronous cigarette pack conveying, which can cause cigarette pack deformation or poor adhesion. In these cases, manual intervention is required to retighten the belt, resulting in lost production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive tensioning device for a tobacco pack conveyor belt pulley and a tobacco pack conveying system, which can achieve tensioning of the conveyor belt.

[0005] The embodiments of this utility model are implemented as follows: In a first aspect, embodiments of this application provide an adaptive tensioning device for a cigarette pack conveyor belt pulley, used to tension a conveyor belt. The tensioning device includes: a driving pulley, a driven pulley, a tensioning pulley, and a tensioning drive mechanism. The conveyor belt forms a closed loop and wraps around the driving pulley, the driven pulley, and the tensioning pulley. The tensioning drive mechanism includes a first driver. The first driver is connected to the axle of the tensioning pulley to change the position of the tensioning pulley within a preset range.

[0006] In a possible implementation, the first driver includes a drive motor and a lead screw shaft, the drive motor being connected to the lead screw shaft, and the lead screw shaft being connected to the wheel axle via a first connecting rod; wherein, when the lead screw shaft rotates about its axis, it drives the tension wheel to change position via the first connecting rod. In a possible implementation, the tensioning drive mechanism further includes: a first auxiliary wheel, a second connecting rod, and a third connecting rod; The first auxiliary wheel is parallel to the axis of the tensioning wheel and the two are connected by the second connecting rod; the first connecting rod and the third connecting rod are arranged parallel to each other and are located at both ends of the lead screw shaft respectively. The two ends of the first connecting rod are respectively connected to the wheel axle of the tensioning wheel and one end of the lead screw shaft, and the two ends of the third connecting rod are respectively connected to the wheel axle of the first auxiliary wheel and the other end of the lead screw shaft. In a possible implementation, the tensioning device further includes a second auxiliary wheel; the axes of the driving wheel, the driven wheel, the tensioning wheel, the first auxiliary wheel, and the second auxiliary wheel are all arranged in parallel; the second auxiliary wheel is located outside the conveyor belt and is always in contact with the conveyor belt. In a possible implementation, the conveyor belt between the driving wheel and the driven wheel is horizontally arranged for conveying tobacco packs in a horizontal direction. In a possible implementation, tension bearings are provided at both ends of the lead screw shaft; one of the tension bearings is connected to the drive motor, and the other tension bearing is used to connect to the fixed support surface.

[0007] In a possible implementation, the tensioning device further includes a tension sensor for collecting tension information of the conveyor belt; wherein, based on the real-time collected tension information and the target tension information matching the preset range, the number of rotations of the lead screw is adjusted.

[0008] Secondly, this application also provides a cigarette pack conveying system, including a conveyor belt, which is tensioned by the aforementioned tensioning device.

[0009] In a possible implementation, two conveyor belts are provided and arranged symmetrically in the vertical direction; the horizontal sections of the two conveyor belts are arranged opposite each other vertically, and cigarette packs are conveyed between them; wherein the distance between the two horizontal sections is less than the width of the cigarette pack.

[0010] In a possible implementation, the system further includes a packaging machine for packing the conveyed cigarette packs.

[0011] The beneficial effects of this utility model embodiment are: The conveyor belt forms a closed loop. The axes of the drive pulley, driven pulley, and tension pulley are parallel and located at predetermined positions inside the conveyor belt, abutting against these predetermined positions. The first driver of the tensioning drive mechanism is connected to the axle of the tension pulley, enabling it to change the position of the tension pulley within a preset range. When the conveyor belt ages and loosens due to prolonged use, the conveying spacing between cigarette packs changes, affecting the conveying accuracy. In this case, controlling the first driver to move the tension pulley changes its position, thus re-tensioning the conveyor belt. Furthermore, the change in the tension pulley's position is within a preset range, preventing excessive tension on the conveyor belt caused by excessive changes in the tension pulley's position. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of an overall tobacco pack conveying system according to an embodiment of the present invention.

[0014] Icons: 1. Conveyor belt; 2. Drive wheel; 3. Driven wheel; 4. Tensioner wheel; 5. Lead screw shaft; 6. First auxiliary wheel; 7. First connecting rod; 8. Second connecting rod; 9. Third connecting rod; 10. Second auxiliary wheel; 11. Tension bearing; 12. Tension sensor; 13. Controller; 14. Cigarette pack; 15. Packaging machine. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] First Embodiment Please refer to Figure 1 This embodiment provides an adaptive tensioning device for a cigarette pack conveyor belt pulley, used to tension a conveyor belt 1. The tensioning device includes: a driving pulley 2, a driven pulley 3, a tensioning pulley 4, and a tensioning drive mechanism. The conveyor belt 1 forms a closed loop and wraps around the driving pulley 2, the driven pulley 3, and the tensioning pulley 4. The tensioning drive mechanism includes a first driver. The first driver is connected to the axle of the tensioning pulley 4 to change the position of the tensioning pulley 4 within a preset range.

[0022] In the above embodiments, the conveyor belt 1 forms a closed loop. The axes of the driving pulley 2, driven pulley 3, and tensioning pulley 4 are parallel and located at predetermined positions inside the conveyor belt 1, and the driving pulley 2, driven pulley 3, and tensioning pulley 4 abut against the predetermined positions inside the conveyor belt 1. The first driver of the tensioning drive mechanism is connected to the axle of the tensioning pulley 4 and can change the position of the tensioning pulley 4 within a preset range. When the conveyor belt 1 ages and becomes loose due to long-term use, it will affect the conveying spacing between the cigarette packs 14, thereby affecting the conveying accuracy of the cigarette packs 14. At this time, controlling the first driver to drive the tensioning pulley 4 to move, by changing the position of the tensioning pulley 4, the conveyor belt 1 is re-tensioned. Moreover, the change in the position of the tensioning pulley 4 is within a preset range, avoiding excessive tension of the conveyor belt 1 caused by excessive change in the position of the tensioning pulley 4.

[0023] In some embodiments, the first actuator includes a drive motor and a lead screw 5. The drive motor is connected to the lead screw 5, and the lead screw 5 is connected to the wheel axle via a first connecting rod 7. When the lead screw 5 rotates around its axis, it drives the tension wheel 4 to change position via the first connecting rod 7. In this embodiment, the first actuator uses a drive motor and lead screw 5, which allows the drive motor to precisely drive the lead screw 5 to rotate a certain number of times, thereby accurately adjusting the position of the tension wheel 4 and improving the adjustment accuracy.

[0024] In some embodiments, the tensioning drive mechanism further includes: a first auxiliary wheel 6, a second connecting rod 8, and a third connecting rod 9; the first auxiliary wheel 6 is parallel to the axis of the tensioning wheel 4, and the two are connected by the second connecting rod 8; the first connecting rod 7 and the third connecting rod 9 are arranged in parallel and are respectively located at both ends of the lead screw shaft 5, the two ends of the first connecting rod 7 are respectively connected to the wheel axle of the tensioning wheel 4 and one end of the lead screw shaft 5, and the two ends of the third connecting rod 9 are respectively connected to the wheel axle of the first auxiliary wheel 6 and the other end of the lead screw shaft 5.

[0025] In conjunction with the above embodiments, the lead screw 5, the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9 form a parallel four-bar linkage. The tension wheel 4 and the first auxiliary wheel 6 are connected to one side of the parallel four-bar linkage. The rotation of the lead screw 5 drives the first connecting rod 7 and the third connecting rod 9 to swing, which in turn drives the tension wheel 4 and the first auxiliary wheel 6 to swing. The tensioning drive mechanism adopts a parallel four-bar linkage, which has high overall structural strength and high overall adjustment accuracy.

[0026] In some embodiments, the tensioning device further includes a second auxiliary wheel 10; the axes of the driving wheel 2, the driven wheel 3, the tensioning wheel 4, the first auxiliary wheel 6, and the second auxiliary wheel 10 are all arranged in parallel; the second auxiliary wheel 10 is located outside the conveyor belt 1 and is always in contact with the conveyor belt 1.

[0027] In conjunction with the above embodiments, the first auxiliary wheel 6 is disposed on the inner side of the conveyor belt 1, enabling it to press against the inner side of the conveyor belt 1, and the second auxiliary wheel 10 is disposed on the outer side of the conveyor belt 1, enabling it to press against the outer side of the conveyor belt 1. When the entire parallel four-bar linkage is driven to swing by the drive motor, the first auxiliary wheel 6 presses against the inner side of the conveyor belt 1, and the second auxiliary wheel 10 presses against the outer side of the conveyor belt 1.

[0028] In some embodiments, the conveyor belt 1 between the driving wheel 2 and the driven wheel 3 is arranged horizontally to form a horizontal section, thereby conveying the tobacco pack 14 in a horizontal direction. In some embodiments, tension bearings 11 are provided at both ends of the lead screw shaft 5; one tension bearing 11 is connected to the drive motor, and the other tension bearing 11 is used to connect to a fixed support surface (such as a wall, frame, etc.).

[0029] In some embodiments, the tensioning device further includes a tension sensor 12, which is used to collect tension information of the conveyor belt 1; wherein, both the tension sensor 12 and the controller 13 are existing types, the tension sensor 12 transmits the collected tension information to the controller 13, and the controller 13 adjusts the number of rotations of the lead screw shaft 5 based on the real-time collected tension information and the target tension information matching the preset range.

[0030] Second Embodiment Please refer to Figure 1 This embodiment provides a cigarette pack conveying system, including a conveyor belt 1 and a tensioning device, wherein the conveyor belt 1 is tensioned by the tensioning device. Since the tensioning device in this embodiment has the same principle and function as the tensioning device in the first embodiment, the repeated parts will not be described again.

[0031] In some embodiments, two conveyor belts 1 are provided and are symmetrically arranged in the vertical direction; the horizontal portions of the two conveyor belts 1 are arranged opposite each other vertically, and cigarette packs 14 are conveyed between them; wherein, the distance between the two horizontal portions is less than the width of the cigarette packs 14, thereby enabling the cigarette packs 14 to be pressed tightly and improving the accuracy of conveying.

[0032] In some embodiments, the system further includes a packaging machine 15 for packaging the delivered cigarette packs 14.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-adaptive tensioning device for a tobacco pack conveyor pulley, characterized in that, For tensioning a conveyor belt, the tensioning device includes: a driving pulley, a driven pulley, a tensioning pulley, and a tensioning drive mechanism; the conveyor belt forms a closed loop and wraps around the driving pulley, the driven pulley, and the tensioning pulley; the tensioning drive mechanism includes a first driver; the first driver is connected to the axle of the tensioning pulley to change the position of the tensioning pulley within a preset range.

2. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 1, characterized in that, The first driver includes a drive motor and a lead screw shaft. The drive motor is connected to the lead screw shaft, and the lead screw shaft is connected to the wheel axle via a first connecting rod. When the lead screw shaft rotates around its axis, it drives the tension wheel to change position via the first connecting rod.

3. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 2, characterized in that, The tensioning drive mechanism further includes: a first auxiliary wheel, a second connecting rod, and a third connecting rod; The first auxiliary wheel is parallel to the axis of the tensioning wheel and the two are connected by the second connecting rod; the first connecting rod and the third connecting rod are arranged parallel to each other and are located at both ends of the lead screw shaft respectively. The two ends of the first connecting rod are respectively connected to the wheel axle of the tensioning wheel and one end of the lead screw shaft, and the two ends of the third connecting rod are respectively connected to the wheel axle of the first auxiliary wheel and the other end of the lead screw shaft.

4. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 3, characterized in that, The tensioning device further includes a second auxiliary wheel; the axes of the driving wheel, the driven wheel, the tensioning wheel, the first auxiliary wheel, and the second auxiliary wheel are all arranged in parallel; the second auxiliary wheel is located outside the conveyor belt and is always in contact with the conveyor belt.

5. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 1, characterized in that, The conveyor belt between the driving wheel and the driven wheel is horizontally arranged for conveying tobacco packs in a horizontal direction.

6. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 2, characterized in that, Tension bearings are provided at both ends of the lead screw shaft; one of the tension bearings is connected to the drive motor, and the other tension bearing is used to connect to the fixed support surface.

7. The adaptive tensioning device for the tobacco pack conveyor pulley according to claim 2, characterized in that, The tensioning device also includes a tension sensor, which is used to collect tension information of the conveyor belt; wherein, based on the real-time collected tension information and the target tension information matching the preset range, the number of rotations of the lead screw shaft is adjusted.

8. A cigarette pack conveying system, characterized in that, Includes a conveyor belt, which is tensioned by an adaptive tensioning device for the tobacco pack conveyor belt pulley as described in any one of claims 1 to 7.

9. The tobacco pack conveying system according to claim 8, characterized in that, The conveyor belts are provided in two symmetrically arranged in the vertical direction; the horizontal sections of the two conveyor belts are arranged opposite each other vertically, and cigarette packs are conveyed between them; wherein, the distance between the two horizontal sections is less than the width of the cigarette pack.

10. The tobacco pack conveying system according to claim 8, characterized in that, The system also includes a packaging machine for packaging the transported cigarette packs.

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