Leveler lifting device

Abstract

This utility model belongs to the field of cigarette production technology and discloses a leveling device lifting mechanism. In this leveling device lifting mechanism, the leveling support includes a support body and a blocking pin. The leveling device is connected to the support body, and the blocking pin is located on the lower side of the support body. A limiting platform is provided on the upper side of the support body. A fixed frame is fixed to the production equipment. When the first driving component drives the support body to move vertically downwards to a preset lowest point, the limiting platform abuts against the upper surface of the fixed frame. The limiting component includes a positioning component and a blocking core. The positioning component is located at one end of the fixed frame and has a receiving cavity for placing the blocking core. The blocking core and the inner wall of the receiving cavity have reserved space for movement. The blocking pin passes through a pin hole on the positioning component and abuts against the blocking core. The driving component drives the blocking core to move up and down within the receiving cavity. By changing the abutment position between the blocking core and the blocking pin, the range of motion of the blocking pin is limited, so that the lifting distance of the support body is adjustable, improving production continuity and quality consistency.

Description

Technical Field

[0001] This utility model relates to the field of cigarette production technology, and in particular to a leveling device for lifting. Background Technology

[0002] In cigarette rolling machines, the pressure roller is used for conveying and initially compacting the tobacco bundle. Installed above the tobacco conveyor belt, the pressure roller adjusts its gap with the conveyor belt by moving up and down, directly controlling the amount of tobacco passing through and providing a relatively uniform tobacco bundle for subsequent cigarette forming. The leveler (including the leveling disc) is installed downstream of the pressure roller in the cigarette forming channel for precise trimming. By adjusting its position up and down, the leveler changes the cutting gap between the leveling disc and the tobacco bundle, removing excess tobacco even after the pressure roller has conveyed it. This ultimately ensures a stable amount of tobacco entering the forming paper, directly determining the accuracy of the cigarette weight.

[0003] Currently, the production of thin-sheet tobacco is difficult due to the challenges in controlling parameters such as moisture content and shred length, and the wide variety of production specifications leads to significant weight variations in tobacco strips. Existing pressure rollers have limited adjustment ranges; when weight deviations exceed their adjustable limits, manual adjustment of the leveling disc to reduce the gap is required, which is cumbersome and prone to production interruptions. Each adjustment necessitates stopping the machine to determine a fixed position, failing to dynamically respond to changes in tobacco characteristics during production, reducing operational efficiency and affecting quality consistency. Furthermore, the lack of quantitative benchmarks and reliance on operator experience makes it easy for adjustment deviations to trigger secondary adjustments, further increasing downtime.

[0004] Therefore, a leveling device is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a leveling device that can automatically adjust the leveling position while the cigarette machine is running without stopping the machine. The adjustment position is quantifiable, which can effectively adapt to the production needs of multiple specifications and batches of tobacco, reduce downtime losses, and avoid deviations caused by manual adjustment based on experience, thereby improving production continuity and quality consistency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The leveling device lifting mechanism includes:

[0008] A leveling device bracket includes a bracket body and a blocking pin. The leveling device is connected to the bracket body. The blocking pin is located on the lower side of the bracket body, and a limiting platform is provided on the upper side of the bracket body.

[0009] The first driving element is configured to drive the support body to move up and down in the vertical direction;

[0010] A fixed frame is installed on the production equipment. When the main body of the frame moves vertically downward to the preset lowest point, the limiting platform can abut against the upper surface of the fixed frame to restrict the main body of the frame from continuing to move downward.

[0011] The limiting component includes a positioning element and a blocking core. The positioning element is located at one end of the fixing frame. The positioning element has a receiving cavity for placing the blocking core, and the blocking core and the inner wall of the receiving cavity are reserved for movement. The positioning element has a pin hole, through which the blocking pin passes and can abut against the blocking core.

[0012] The drive assembly is configured to drive the blocking core to move up and down within the accommodating cavity. By changing the contact position between the blocking core and the blocking pin, the range of motion of the blocking pin is limited, so that the lifting distance of the bracket body is adjustable.

[0013] As an optional solution for a leveling device lifting mechanism, the mounting bracket includes a vertically extending plate and a horizontally extending boss located on the underside of the vertical plate. The vertical plate has fixing holes, and the positioning member has a slotted hole extending vertically. The leveling device lifting mechanism further includes:

[0014] A guide fastener passes through the waist-shaped hole and the fixing hole and is fixedly connected to the upright plate to guide the movement of the positioning member in the vertical direction;

[0015] A fine-tuning nut extends vertically, threaded through the boss and abutting against the lower surface of the positioning member. When the fine-tuning nut is rotated to push the positioning member upward in the vertical direction, the gap between the upper surface of the boss and the lower surface of the positioning member increases, and the guide fastener slides downward relative to the waist-shaped hole, thereby increasing the range of motion of the blocking pin. When the fine-tuning nut is rotated to push the positioning member downward in the vertical direction, the gap between the upper surface of the boss and the lower surface of the positioning member decreases, and the guide fastener slides upward relative to the waist-shaped hole, thereby decreasing the range of motion of the blocking pin.

[0016] As an alternative solution for the leveling device lifting mechanism, the upright plate is provided with a groove extending in the vertical direction, and part of the support body is embedded in the groove with a reserved gap. The groove guides the movement of the support body in the vertical direction and restricts the offset of the support body in the horizontal direction.

[0017] As an alternative solution for the leveling device lifting mechanism, the blocking core has a triangular-like structure, with its three corners corresponding to the first, second, and third ends of the blocking core, respectively. The drive assembly includes:

[0018] The second driving component has its fixed end connected to the fixed frame;

[0019] A transmission rod passes through the first end of the blocking core and the output end of the second driving member, and the two ends of the transmission rod are respectively limited to restrict the movement of the blocking core and the output end of the second driving member along the axial direction of the transmission rod;

[0020] A rotating shaft passes through the second end of the blocking core and is fixedly connected to the fixed frame. The output end of the second driving member can extend and retract in the horizontal direction, driving the first end of the blocking core to move. The second end of the blocking core rotates around the rotating shaft, and the third end of the blocking core moves up and down in the accommodating cavity. By changing the contact position between the third end of the blocking core and the blocking pin, the range of motion of the blocking pin is limited, so that the lifting distance of the bracket body is adjustable.

[0021] As an optional solution for the leveling device lifting mechanism, the lower surface of the third end of the blocking core is provided as an arc-shaped surface, and an arc-shaped groove is provided in the accommodating cavity corresponding to the arc-shaped surface; when the third end of the blocking core moves along the accommodating cavity to the lower limit position, the arc-shaped surface can fit and cooperate with the inner wall of the arc-shaped groove to limit the lower limit position of the movement of the blocking core.

[0022] As an alternative solution for the leveling device lifting mechanism, the upper surface of the third end of the blocking core is provided as a first plane, and a second plane is provided in the accommodating cavity corresponding to the first plane; when the third end of the blocking core moves along the accommodating cavity to the upper limit position, the first plane can fit and cooperate with the second plane to limit the upper limit position of the movement of the blocking core.

[0023] As an alternative solution for the leveling device lifting mechanism, the leveling device lifting mechanism further includes a mounting pin, which is disposed on the fixed frame at one end opposite to the positioning member, and the fixed end of the second drive member is connected to the mounting pin.

[0024] As an alternative solution for the leveling device lifting mechanism, the second driving component is an electric push rod, the fixed end of which is connected to the fixed frame, and the output end of which is a straight push shaft capable of horizontal extension and retraction.

[0025] As an optional solution for the leveling device lifting mechanism, the leveling device lifting mechanism also includes a position sensor configured to detect the displacement of the support body relative to the fixed frame in the vertical direction. When the support body moves to a preset height, the position sensor can output a positioning signal.

[0026] As an optional solution for the leveling device lifting mechanism, the leveling device lifting mechanism also includes a PLC electrical control mechanism. The PLC electrical control mechanism is electrically connected to the position sensor and is also electrically connected to the first drive member and the second drive member. The PLC electrical control mechanism can receive the positioning signal and can stop the first drive member and the second drive member.

[0027] The beneficial effects of this utility model are:

[0028] This utility model provides a leveling device for lifting. When in operation, a first driving component drives the main body of the leveling bracket to move vertically. When the main body moves downward to a preset lowest point, the limiting platform on the upper side of the main body abuts against the upper surface of the fixed frame on the production equipment, restricting further downward movement of the main body. When adjustment of the lifting distance of the main body is required, a blocking pin of the leveling bracket is located on the lower side of the main body and passes through the pin hole of the positioning component in the limiting component. The driving component drives the blocking core in the accommodating cavity of the positioning component to move up and down. By changing the abutment position between the blocking core and the blocking pin, the range of motion of the blocking pin is limited, thereby adjusting the lifting distance of the main body. This leveling device allows for autonomous adjustment of the leveling position while the cigarette machine is running without stopping the machine. The adjustment position is quantifiable, effectively adapting to the production needs of multiple specifications and batches of tobacco, reducing downtime losses, and avoiding deviations caused by manual adjustment relying on experience, thus improving production continuity and quality consistency. Attached Figure Description

[0029] Figure 1 This is a first schematic diagram of the leveling device lifting device according to an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the leveling device support described in an embodiment of the present utility model;

[0031] Figure 3 This is a second schematic diagram of the leveling device lifting device described in this embodiment of the present invention;

[0032] Figure 4 This is a cross-sectional view of the leveling device lifting device described in this embodiment of the utility model;

[0033] Figure 5 This is a third schematic diagram of the leveling device lifting device described in this embodiment of the utility model.

[0034] In the picture:

[0035] 1. Leveling device bracket; 11. Bracket body; 111. Limiting platform; 12. Stopping pin;

[0036] 2. Fixing bracket; 21. Upright plate; 211. Fixing hole; 212. Groove; 22. Boss;

[0037] 3. Limiting components;

[0038] 31. Positioning element; 310. Receiving cavity; 311. Arc groove; 312. Second plane; 313. Pin hole; 314. Waist-shaped hole;

[0039] 32. Blocking core; 321. Arc-shaped surface; 322. First plane;

[0040] 4. Drive assembly; 41. Second drive component; 42. Transmission rod; 43. Rotating shaft;

[0041] 51. Guide fastener; 52. Adjusting nut;

[0042] 6. Mounting pin; 7. Protective casing. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] like Figures 1-4As shown, this embodiment provides a leveling device lifting mechanism, which includes a leveling bracket 1, a first driving member, a fixed frame 2, a limiting assembly 3, and a driving assembly 4. The leveling bracket 1 includes a bracket body 11 and a blocking pin 12. The leveling device is connected to the bracket body 11. The blocking pin 12 is located on the lower side of the bracket body 11, and a limiting platform 111 is provided on the upper side of the bracket body 11. The first driving member is used to drive the bracket body 11 to move up and down in the vertical direction. The fixed frame 2 is fixed to the production equipment. When the bracket body 11 moves downward in the vertical direction to the preset lowest point position, the limiting platform 111 can abut against the upper surface of the fixed frame 2. Next, the support body 11 is restricted from continuing to move downward; the limiting component 3 includes a positioning element 31 and a blocking core 32. The positioning element 31 is located at one end of the fixed frame 2. The positioning element 31 has a receiving cavity 310 for placing the blocking core 32, and the blocking core 32 and the inner wall of the receiving cavity 310 are reserved for movement. The positioning element 31 has a pin hole 313, and the blocking pin 12 passes through the pin hole 313 and can abut against the blocking core 32; the driving component 4 is used to drive the blocking core 32 to move up and down in the receiving cavity 310. By changing the abutment position of the blocking core 32 and the blocking pin 12, the range of motion of the blocking pin 12 is limited, so that the lifting distance of the support body 11 is adjustable.

[0048] When the leveling device is working, the first driving component drives the support body 11 of the leveling bracket 1 to move vertically. When the support body 11 moves downward to the preset lowest point, the limiting platform 111 on the upper side of the support body 11 abuts against the upper surface of the fixed frame 2 fixed to the production equipment, restricting the support body 11 from continuing to move downward. When it is necessary to adjust the lifting distance of the support body 11, the blocking pin 12 of the leveling bracket 1 is located on the lower side of the support body 11 and passes through the pin hole 313 of the positioning member 31 in the limiting component 3. The driving component 4 drives the blocking core 32 in the accommodating cavity 310 of the positioning member 31 to move up and down. By changing the abutment position between the blocking core 32 and the blocking pin 12, the range of motion of the blocking pin 12 is limited, thereby realizing the adjustment of the lifting distance of the support body 11. This leveling device can automatically adjust the leveling position while the cigarette machine is running without stopping the machine. The adjustment position is quantifiable, which can effectively adapt to the production needs of multiple specifications and batches of tobacco, reduce downtime losses, and avoid deviations caused by manual adjustment based on experience, thereby improving production continuity and quality consistency.

[0049] In this embodiment, the first driving component is a cylinder, which can provide a stable and controllable driving force for the vertical movement of the support body 11. The cylinder drive response is rapid, which can reduce the lag time of the support body 11 lifting and lowering, and avoid the weight fluctuation of the cigarette due to untimely adjustment.

[0050] In this embodiment, the thickness of the blocking core 32 is adjustable, and the entire set of limiting components 3 can be replaced without replacing it. This allows for flexible adaptation to the limiting requirements of the range of motion of the blocking pin 12 under different conditions, thereby adjusting the lifting distance of the bracket body 11. This further enhances the adaptability of the leveling device in the production of multiple specifications and batches of tobacco, reduces the cost and time of component replacement, and more efficiently ensures the convenience of leveling device position adjustment and production continuity during cigarette machine operation.

[0051] like Figure 1 and Figure 3 As shown, the fixing frame 2 includes a vertical plate 21 extending in the vertical direction and a boss 22 extending in the horizontal direction on the lower side of the vertical plate 21. The vertical plate 21 is provided with a fixing hole 211, and the positioning member 31 is provided with a waist-shaped hole 314 extending in the vertical direction. The leveling device also includes a guide fastener 51 and a fine-tuning nut 52. The guide fastener 51 passes through the waist-shaped hole 314 and the fixing hole 211 and is fixedly connected to the vertical plate 21 to guide the movement of the positioning member 31 in the vertical direction. The fine-tuning nut 52 extends in the vertical direction, is threaded through the boss 22 and is fixedly connected to the boss 21. When the lower surface of the positioning member 31 abuts against the rotating fine-tuning nut 52, pushing the positioning member 31 to move vertically upward, the gap between the upper surface of the boss 22 and the lower surface of the positioning member 31 increases, and the guide fastener 51 slides downward relative to the oblong hole 314, thereby increasing the range of motion of the blocking pin 12. When the fine-tuning nut 52 is rotated to push the positioning member 31 to move vertically downward, the gap between the upper surface of the boss 22 and the lower surface of the positioning member 31 decreases, and the guide fastener 51 slides upward relative to the oblong hole 314, thereby decreasing the range of motion of the blocking pin 12. The guide fastener 51 passes through the oblong hole 314 of the positioning member 31 and the fixing hole 211 of the upright plate 21 of the fixing bracket 2, providing precise guidance for the vertical movement of the positioning member 31. The fine-tuning nut 52, threadedly connected to the rotating boss 22, allows for convenient adjustment of the position of the positioning member 31, thereby flexibly changing the range of motion of the blocking pin 12. The leveling device can be finely adjusted without stopping the machine, making the adjustment more precise and controllable. It can quickly adapt to changes in tobacco characteristics, reduce manual intervention and downtime losses, and further improve the stability of cigarette weight and production efficiency.

[0052] It is worth noting that the lowest point of the downward movement of the bracket body 11 remains unchanged, always locked by the limit platform 111 against the upper surface of the fixed frame 2, preventing excessive downward displacement of the bracket body 11 and damage to the components. When adjusting the upper limit of the movement of the bracket body 11, first, the guide fastener 51 passes through the waist-shaped hole 314 of the positioning component 31 and the fixing hole 211 of the upright plate 21 to ensure that the positioning component 31 moves smoothly only in the vertical direction and avoids deviation and jamming; then, the fine-tuning nut 52, which is threadedly connected to the boss 22, is slowly rotated. The end of the fine-tuning nut 52 pushes the positioning component 31 to gradually rise. Through the abutment relationship between the blocking core 32 and the blocking pin 12, the upper limit position of the blocking pin 12 is precisely limited, so that the bracket body 11 can be finely adjusted within the preset upper and lower limit positions, avoiding component collision damage due to excessive adjustment or overtravel.

[0053] like Figure 1 As shown, in this embodiment, there are two fine-tuning nuts 52, which are symmetrically arranged on both sides of the blocking pin 12. On the one hand, during adjustment, forces can be applied simultaneously from both sides of the blocking pin 12, preventing the positioning member 31 from tilting or shifting due to unilateral force, ensuring that the positioning member 31 always moves smoothly in the vertical direction, thereby ensuring that the blocking core 32 and the blocking pin 12 abut at a precise position, making the adjustment of the upper limit of the support body 11 more accurate, reducing unilateral adjustment deviation, improving the operational reliability of the leveling device, and further improving the stability of cigarette quality.

[0054] like Figure 1 , Figure 3 and Figure 4 As shown, the upright plate 21 has a groove 212 extending vertically. Part of the support body 11 is embedded in the groove 212 with a pre-reserved gap. The groove 212 guides the movement of the support body 11 in the vertical direction and restricts the deviation of the support body 11 in the horizontal direction. This not only accurately guides the stable movement of the support body 11 in the vertical direction, but also effectively restricts the deviation of the support body 11 in the horizontal direction, ensuring the directionality and stability of the support body 11 during movement and improving the overall reliability of the leveling device support 1.

[0055] like Figure 1 and Figure 3As shown, the blocking core 32 has a triangular structure, with the three corners corresponding to the first, second, and third ends of the blocking core 32, respectively. The drive assembly 4 includes a second drive member 41, a transmission rod 42, and a rotating shaft 43. The fixed end of the second drive member 41 is connected to the fixed frame 2. The transmission rod 42 passes through the first end of the blocking core 32 and the output end of the second drive member 41, and both ends of the transmission rod 42 are limited to restrict the axial movement of the blocking core 32 and the output end of the second drive member 41 along the transmission rod 42. The rotating shaft 43 passes through the second end of the blocking core 32 and is fixedly connected to the fixed frame 2. The output end of the second drive member 41 can extend and retract in the horizontal direction, driving the first end of the blocking core 32 to move. The second end of the blocking core 32 rotates around the rotating shaft 43, and the third end of the blocking core 32 moves up and down in the accommodating cavity 310. By changing the contact position between the third end of the blocking core 32 and the blocking pin 12, the range of motion of the blocking pin 12 is limited, so that the lifting distance of the bracket body 11 is adjustable. First, the blocking core 32 adopts a triangular-like structure. In conjunction with the second driving component 41, transmission rod 42, and rotating shaft 43 of the drive assembly 4, it converts the horizontal extension and retraction of the second driving component 41 into the vertical displacement of the third end of the blocking core 32 through the rotation of the rotating shaft 43. The adjustment process is stable and highly precise. Second, the limiting at both ends of the transmission rod 42 prevents axial misalignment between the blocking core 32 and the output end of the second driving component 41, ensuring stable power transmission. Third, the contact position between the third end of the blocking core 32 and the blocking pin 12 is controllable, precisely limiting the lifting range of the support body 11, reducing adjustment deviations, and further improving the operational reliability of the leveling device and the stability of cigarette quality.

[0056] like Figure 1 and Figure 3 As shown, the lower surface of the third end of the blocking core 32 is an arc-shaped surface 321, and an arc-shaped groove 311 is provided in the accommodating cavity 310 corresponding to the arc-shaped surface 321. When the third end of the blocking core 32 moves along the accommodating cavity 310 to the lower limit position, the arc-shaped surface 321 can fit against the inner wall of the arc-shaped groove 311 to limit the lower limit position of the blocking core 32's movement. When the blocking core 32 moves to the lower limit position, the precise positioning by the arc-shaped surface 321 fitting against the inner wall of the arc-shaped groove 311 prevents the blocking core 32 from moving excessively downward, causing structural deformation. At the same time, it can ensure that the third end of the blocking core 32 and the blocking pin 12 abut against each other are stable, avoiding the impact of inaccurate positioning on the lifting accuracy of the support body 11, and further improving the adjustment reliability of the leveling device lifting device.

[0057] like Figure 1 and Figure 3As shown, the upper surface of the third end of the blocking core 32 is designated as a first plane 322, and a second plane 312 is provided inside the accommodating cavity 310 corresponding to the first plane 322. When the third end of the blocking core 32 moves along the accommodating cavity 310 to the upper limit position, the first plane 322 can fit and cooperate with the second plane 312 to limit the upper limit position of the blocking core 32. When the blocking core 32 moves to the upper limit position, precise positioning is achieved by the fit of the first plane 322 and the second plane 312. The plane fitting positioning method has a large contact area, which can stably bear the force of the blocking core 32 and avoid the blocking core 32 from moving too high and causing collision damage to surrounding components. At the same time, it ensures that the upper limit position of the blocking core 32 is fixed, ensuring that the contact relationship between the blocking core 32 and the blocking pin 12 is stable, thereby determining the upper limit position of the blocking pin 12, making the adjustment range of the support body 11 more precise, and improving the operational stability of the leveling device and the consistency of cigarette quality.

[0058] like Figure 1 and Figure 3 As shown, the leveling device also includes a mounting pin 6, which is located on the fixed frame 2 at one end away from the positioning member 31. The fixed end of the second driving member 41 is connected to the mounting pin 6. The mounting pin 6 provides a stable fixed support point for the second driving member 41, preventing the second driving member 41 from shifting or shaking due to lack of reliable fixing when outputting power, thus ensuring stable power transmission.

[0059] like Figure 1 and Figure 3 As shown, the second driving component 41 is an electric push rod. The fixed end of the electric push rod is connected to the fixed frame 2, and the output end of the electric push rod is a straight push shaft, which can extend and retract in the horizontal direction. On the one hand, the second driving component 41 uses an electric push rod, whose straight push shaft can stably extend and retract in the horizontal direction, providing a precise and controllable driving force to the first end of the blocking core 32, avoiding errors from manual adjustment, making the rotation angle of the blocking core 32 around the rotating shaft 43 more accurate, and thus making the contact position between the third end of the blocking core 32 and the blocking pin 12 more stable. On the other hand, the output force of the electric push rod is uniform and quantifiable, which can adapt to the fine-tuning needs under different tobacco specifications, without the need for frequent manual intervention, reducing downtime, and further improving the adjustment accuracy and operational reliability of the leveling device.

[0060] In this embodiment, the leveling device also includes a position sensor. The position sensor detects the vertical displacement of the support body 11 relative to the fixed frame 2. When the support body 11 reaches a preset height, the position sensor outputs a positioning signal. The position sensor can detect the vertical displacement of the support body 11 relative to the fixed frame 2 in real time. When the support body 11 reaches the preset height, it immediately outputs a positioning signal to quickly remind the operator, eliminating the need for continuous manual observation and reducing operational intensity. It can also remind the operator to stop the lifting of the support body 11 in time, preventing damage from collisions with other components due to overtravel, ensuring the support body 11 always stops at the target position, guaranteeing the leveling device's accuracy, reducing cigarette weight fluctuations, and improving production efficiency and quality stability. The position sensor can be a photoelectric sensor.

[0061] In this embodiment, the leveling device also includes a PLC control mechanism. The PLC control mechanism is electrically connected to the position sensor and to both the first and second driving components 41. The PLC control mechanism can receive position signals and stop the first and second driving components 41. First, the PLC control mechanism is electrically connected to the position sensor, the first driving component, and the second driving component 41, and can automatically receive the position signal from the position sensor, quickly stopping the first and second driving components 41 without manual operation, thus preventing the support body 11 from overtravel and colliding with other components. Second, the PLC control mechanism replaces manual control to achieve automated adjustment, reducing human error, making the lifting position of the support body 11 more precise, ensuring the leveling device adjustment accuracy, reducing downtime, and further ensuring production continuity and cigarette quality stability.

[0062] like Figure 5 As shown, in this embodiment, the leveling device lifting device also includes a protective shell 7, which is disposed outside the positioning member 31. The protective shell 7 can effectively isolate impurities such as tobacco dust and debris in the production environment, preventing impurities from entering the receiving cavity 310 of the positioning member 31, avoiding component jamming and wear, ensuring the smooth movement of the blocking core 32, and extending the service life of the leveling device lifting device. In addition, it can also prevent operators from accidentally touching moving parts during production, improving operational safety and further ensuring the stable operation of the leveling device lifting device and production safety.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A leveling device lifting mechanism, characterized in that, include: The leveling device bracket (1) includes a bracket body (11) and a blocking pin (12). The leveling device is connected to the bracket body (11). The blocking pin (12) is located on the lower side of the bracket body (11). A limiting platform (111) is provided on the upper side of the bracket body (11). The first driving element is configured to drive the support body (11) to move up and down in the vertical direction; The fixed frame (2) is fixed to the production equipment. When the support body (11) moves downward in the vertical direction to the preset lowest point position, the limiting platform (111) can abut against the upper surface of the fixed frame (2) to restrict the support body (11) from continuing to move downward. The limiting component (3) includes a positioning element (31) and a blocking core (32). The positioning element (31) is located at one end of the fixing frame (2). The positioning element (31) has a receiving cavity (310) for placing the blocking core (32). The blocking core (32) and the inner wall of the receiving cavity (310) are reserved for movement. The positioning element (31) has a pin hole (313). The blocking pin (12) passes through the pin hole (313) and can abut against the blocking core (32). The drive assembly (4) is configured to drive the blocking core (32) to move up and down in the accommodating cavity (310). By changing the contact position between the blocking core (32) and the blocking pin (12), the range of motion of the blocking pin (12) is limited, so that the lifting distance of the bracket body (11) is adjustable.

2. The leveling device lifting device according to claim 1, characterized in that, The fixing frame (2) includes a vertical plate (21) extending in the vertical direction and a boss (22) extending in the horizontal direction on the lower side of the vertical plate (21). The vertical plate (21) is provided with fixing holes (211), and the positioning member (31) is provided with a waist-shaped hole (314) extending in the vertical direction. The leveling device also includes: Guide fastener (51), the guide fastener (51) passes through the waist-shaped hole (314) and the fixing hole (211) and is fixedly connected to the upright plate (21) to guide the movement of the positioning member (31) in the vertical direction; The fine-tuning nut (52) extends vertically, is threaded through the boss (22) and abuts against the lower surface of the positioning member (31). When the fine-tuning nut (52) is rotated to push the positioning member (31) to move upward in the vertical direction, the gap between the upper surface of the boss (22) and the lower surface of the positioning member (31) increases, and the guide fastener (51) slides downward relative to the waist-shaped hole (314) to increase the range of motion of the blocking pin (12). When the fine-tuning nut (52) is rotated to push the positioning member (31) to move downward in the vertical direction, the gap between the upper surface of the boss (22) and the lower surface of the positioning member (31) decreases, and the guide fastener (51) slides upward relative to the waist-shaped hole (314) to decrease the range of motion of the blocking pin (12).

3. The leveling device lifting device according to claim 2, characterized in that, The upright plate (21) is provided with a groove (212) extending in the vertical direction. Part of the support body (11) is embedded in the groove (212) with a reserved gap. The groove (212) guides the movement of the support body (11) in the vertical direction and restricts the offset of the support body (11) in the horizontal direction.

4. The leveling device lifting device according to claim 1, characterized in that, The blocking core (32) has a triangular structure, with the three corners of the triangular structure corresponding to the first, second, and third ends of the blocking core (32), respectively. The driving assembly (4) includes: The second driving member (41) has its fixed end connected to the fixed frame (2); A transmission rod (42) passes through the first end of the blocking core (32) and the output end of the second driving member (41), and the two ends of the transmission rod (42) are respectively limited to restrict the movement of the blocking core (32) and the output end of the second driving member (41) along the axial direction of the transmission rod (42); A rotating shaft (43) passes through the second end of the blocking core (32) and is fixedly connected to the fixed frame (2). The output end of the second driving member (41) can extend and retract in the horizontal direction, driving the first end of the blocking core (32) to move. The second end of the blocking core (32) rotates around the rotating shaft (43). The third end of the blocking core (32) moves up and down in the accommodating cavity (310). By changing the contact position between the third end of the blocking core (32) and the blocking pin (12), the range of motion of the blocking pin (12) is limited, so that the lifting distance of the bracket body (11) is adjustable.

5. The leveling device lifting device according to claim 4, characterized in that, The lower surface of the third end of the blocking core (32) is provided as an arc surface (321), and an arc groove (311) is provided in the accommodating cavity (310) corresponding to the arc surface (321). When the third end of the blocking core (32) moves along the accommodating cavity (310) to the lower limit position, the arc surface (321) can fit and cooperate with the inner wall of the arc groove (311) to limit the lower limit position of the movement of the blocking core (32).

6. The leveling device lifting device according to claim 4, characterized in that, The upper surface of the third end of the blocking core (32) is set as a first plane (322), and a second plane (312) is provided in the accommodating cavity (310) corresponding to the first plane (322); when the third end of the blocking core (32) moves along the accommodating cavity (310) to the upper limit position, the first plane (322) can fit and cooperate with the second plane (312) to limit the upper limit position of the movement of the blocking core (32).

7. The leveling device lifting device according to claim 4, characterized in that, The leveling device also includes a mounting pin (6), which is located on the fixed frame (2) at one end away from the positioning member (31), and the fixed end of the second driving member (41) is connected to the mounting pin (6).

8. The leveling device lifting device according to claim 4, characterized in that, The second driving component (41) is an electric push rod. The fixed end of the electric push rod is connected to the fixed frame (2). The output end of the electric push rod is a straight push shaft, which can extend and retract in the horizontal direction.

9. The leveling device lifting apparatus according to any one of claims 4-8, characterized in that, The leveling device also includes a position sensor, which is configured to detect the displacement of the support body (11) relative to the fixed frame (2) in the vertical direction. When the support body (11) moves to a preset height, the position sensor can output a positioning signal.

10. The leveling device lifting device according to claim 9, characterized in that, The leveling device also includes a PLC control mechanism. The PLC control mechanism is electrically connected to the position sensor and to both the first drive and the second drive (41). The PLC control mechanism can receive the positioning signal and can stop the first drive and the second drive (41).

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