Mechanical self-locking overload clutch of YJ17 cigarette making machine
By designing a mechanical self-locking overload clutch on the YJ17 cigarette reel, automatic shutdown is achieved using trapezoidal blocks and detection switches, the traditional leveler jamming problem is solved and the quality and reliability of cigarette support are improved.
Patent Information
- Application Number
- CN202421750406.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The traditional leveler driving method is prone to being stuck due to debris, resulting in poor reliability of overload protection structure, long reset time and low accuracy, which affects the quality of the cigarette support.
A mechanical self-locking overload clutch of YJ17 cigarette reel is designed. The movable end cap is installed on the T-shaft elastically guided, and the trapezoidal block and detection switch are used to achieve automatic shutdown, avoiding the automatic reset of the movable end cap in a stuck state, enhancing reliability and accuracy.
It improves the safety and reliability and accuracy of the leveling device, quickly responds to the stuck state, eliminates the adverse effects of debris on the cigarette stick, and improves the quality of the cigarette stick.
Smart Images
Figure CN223178019U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tobacco processing equipment, and particularly relates to a mechanical self-locking overload clutch for a YJ17 cigarette making machine. Background Technique
[0002] The leveling device belongs to the feeding and strip forming machine part of the cigarette making machine, and is a key device in the cigarette production process, which is of great significance for ensuring the uniformity of cigarette taste and reducing empty-end cigarettes. Before the cut tobacco is conveyed to the cigarette making equipment, the leveling device is used to trim the cut tobacco bundle to form a tight-end cigarette, so as to avoid product quality defects such as empty ends, air leakage or weight fluctuations in the cigarette. The leveling device drives the synchronous pulley to rotate by the driving main shaft, and then drives the splitting knife disc to trim the cut tobacco bundle. However, the design structure of the traditional leveling device drive mode is easy to be stuck by sundries such as stones, stainless steel screws, nuts, etc., resulting in damage to spare parts such as the splitting knife disc, wire brushing wheel, and even gearbox. At present, the leveling device usually adopts the following methods for safety protection: 1. Using a copper insurance pin as an overload protection device; 2. Using a steel ball or steel ball with a compression spring as an overload protection. Among them, the copper insurance pin belongs to a destructive insurance, with poor reliability. Once damaged, it needs to be replaced and the synchronization alignment between the shaft and the pulley needs to be re-done. The fault recovery time is long, and the copper insurance pin and the pin positioning hole are easy to wear and generate gaps, affecting the transmission accuracy, causing the tight-end position of the leveling disc to shift, forming empty-end cigarettes, and seriously affecting the product quality. In addition, there are impurities when the insurance pin is sheared, which may cause the transmission device to be stuck. Therefore, in view of the above problems, it is necessary to make improvements. Content of the Utility Model
[0003] The technical problem solved by the utility model is to provide a mechanical self-locking overload clutch for a YJ17 cigarette making machine. By elastically guiding and installing a movable end cover on a T-shaped shaft fixedly connected to a toothed belt pulley, an outer end cover and an inner end cover, and making the trapezoidal block on the movable end cover fit and contact with the trapezoidal block on the outer end cover, when the leveling device is stuck and the torque is too large, the trapezoidal blocks in contact and cooperation gradually misalign and separate, pushing the movable end cover to move outwards until the self-locking part is adapted and positioned with the positioning groove, and the detection switch controls the locomotive to stop according to the position information detected after the movable end cover moves backward, solving the problems of poor reliability, long reset time and low precision of the traditional protection structure of the leveling device, eliminating the adverse effects of sundries on the cigarette, improving the cigarette quality, having a simple structure, sensitive reaction, high precision, good safety and reliability, and high use value.
[0004] Technical solution adopted by the utility model: The mechanical self-locking overload clutch of the YJ17 cigarette making machine includes a toothed belt pulley rotatably installed on the driving shaft sleeve, and an outer end cover and an inner end cover coaxially arranged on both sides of the toothed belt pulley. A T-shaped shaft is arranged on the outer side of the outer end cover, and the T-shaped shaft, the toothed belt pulley, the outer end cover and the inner end cover are fixedly connected into a whole by a plurality of screws evenly distributed in the circumferential direction. An active end cover axially movable along the T-shaped shaft is elastically guided and installed on the T-shaped shaft, and a self-locking member adapted to the positioning groove on the T-shaped shaft and used for positioning the active end cover is arranged on the active end cover. Trapezoidal blocks with corresponding positions and in contact with each other are fixed on the end faces of the active end cover and the outer end cover. When the leveller jams and causes excessive torque, the mutually contacting and cooperating trapezoidal blocks are gradually misaligned and separated, and during this process, the active end cover is pushed outward to move until the self-locking member is adapted to and positioned in the positioning groove. A detection switch for detecting the position of the active end cover is arranged on the outer side of the active end cover, and the detection switch is connected to the on-off circuit of the locomotive.
[0005] Wherein, two key grooves are symmetrically arranged on the small-diameter shaft section of the T-shaped shaft, and the keys installed in the key grooves are adapted to the guide grooves arranged on the inner hole wall of the active end cover. The part of the small-diameter shaft section of the T-shaped shaft passing through the inner hole of the active end cover is a screw rod, and the active end cover is elastically installed on the T-shaped shaft through a spring, a gasket sleeved on the screw rod and a nut adapted to the end of the screw rod.
[0006] Further, a convex ring is concentrically arranged on the outer end face of the active end cover, and the guide groove penetrates through the hole wall of the convex ring.
[0007] Further, the large-diameter disc of the T-shaped shaft and the toothed belt pulley, the outer end cover and the inner end cover are fixedly connected into a whole by a plurality of screws evenly distributed in the circumferential direction.
[0008] Further, the self-locking member includes a swing arm and a tension spring. One end of the swing arm is rotatably installed on the inner end face of the active end cover, and a semi-circular groove adapted to the positioning groove is arranged on the other end face of the swing arm. One end of the tension spring is fixed on the inner end face of the active end cover, and the other end of the tension spring is connected to the hole on the face of the swing arm.
[0009] Further, a long groove for manually rotating the swing arm and resetting it is formed on the swing arm.
[0010] Further, the detection switch is a metal detection proximity switch.
[0011] Advantages of the utility model compared with the prior art:
[0012] 1. In this technical solution, the active end cover is elastically guided and installed on the T-shaped shaft fixedly connected to the toothed belt pulley, the outer end cover and the inner end cover, providing conditions for the backward movement of the active end cover when the leveller jams and causes excessive torque. The backward movement of the active end cover is stable and reliable, quickly reflecting the jammed state of the leveller to the active end cover, with a fast reaction speed;
[0013] 2. In this technical solution, trapezoidal blocks that are mutually adapted are fixed on the outer end cover and the movable end cover. By utilizing the inclined surfaces of the trapezoidal blocks, when the torque is too large, the distance between the movable end cover and the outer end cover is gradually increased, providing mechanical conditions for triggering the movement of the movable end cover.
[0014] 3. In this technical solution, a swing arm adapted to the positioning groove on the T-shaped shaft is arranged on the movable end cover. Under the action of the tension spring, the swing arm is driven by the movable end cover to move to a position corresponding to the positioning groove for adaptation, preventing the phenomenon that the movable end cover automatically resets when the large torque disappears. And under the control of the detection switch, the automatic shutdown of the locomotive is realized, providing conditions for the effective treatment of impurities.
[0015] 4. This technical solution solves the problems of poor reliability, long reset time and low accuracy of the traditional protection structure of the leveling device, eliminates the adverse effects of sundries on cigarette rods, improves the quality of cigarette rods, has a simple structure, is sensitive in response, high in accuracy, good in safety and reliability, and has high use value. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2 is an inner three-dimensional structural schematic diagram of the present utility model after the movable end cover is connected to the T-shaped shaft;
[0018] Figure 3 is an outer three-dimensional structural schematic diagram of the present utility model after the movable end cover is connected to the T-shaped shaft;
[0019] Figure 4 is a schematic connection structural diagram of the toothed belt pulley, the outer end cover, the inner end cover and the trapezoidal block of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the Figures 1-4 in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] It should be noted that in this text, unless otherwise stated, it is to be understood that: the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance.
[0022] In this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.
[0023] The mechanical self-locking overload clutch of the YJ17 cigarette making machine includes a toothed belt pulley 2 rotatably installed on the driving shaft sleeve 1, and an outer end cover 9 and an inner end cover 3 coaxially arranged on both sides of the toothed belt pulley 2. A T-shaped shaft 4 is provided on the outer side of the outer end cover 9, and the T-shaped shaft 4, the toothed belt pulley 2, the outer end cover 9 and the inner end cover 3 are fixedly connected into one body by a plurality of circumferentially evenly distributed screws. An end cover 5 that moves axially along the T-shaped shaft 4 is elastically and guidingly installed on the T-shaped shaft 4, and a self-locking member that is adapted to the positioning groove 6 on the T-shaped shaft 4 and is used for positioning the movable end cover 5 is provided on the movable end cover 5. Trapezoidal blocks 7 that are in position correspondence and contact each other are fixed on the end faces of the movable end cover 5 and the outer end cover 9. When the leveller jams and causes excessive torque, the mutually contacting and cooperating trapezoidal blocks 7 are gradually misaligned and separated, and during this process, the movable end cover 5 is pushed outward to move until the self-locking member is adapted to and positioned with the positioning groove 6. A detection switch 8 for detecting the position of the movable end cover 5 is provided on the outer side of the movable end cover 5, and the detection switch 8 is connected to the on-off circuit of the locomotive. Among them, the detection switch 8 is a metal detection proximity switch; in the above structure, by elastically and guidingly installing the movable end cover 5 on the T-shaped shaft 4 fixedly connected to the toothed belt pulley 2, the outer end cover 9 and the inner end cover 3, conditions are provided for the movable end cover 5 to move backward when the leveller jams and causes excessive torque. The backward movement of the movable end cover 5 is stable and reliable, quickly reflecting the jammed state of the leveller to the movable end cover, with a fast response speed; by fixing mutually adapted trapezoidal blocks 7 on the outer end cover 9 and the movable end cover 5, using the inclined surface of the trapezoidal block 7, the distance between the movable end cover 5 and the outer end cover 9 is gradually increased when the torque is excessive, providing mechanical conditions for triggering the movement of the movable end cover 9, and controlling the locomotive to automatically stop when the detection switch 5 detects the backward-moving movable end cover 5, solving the problems of poor reliability, long reset time and low accuracy of the traditional protection structure of the leveller;
[0024] The elastic positioning and installation structure of the movable end cover 5 on the T-shaped shaft 4 is as follows: Two key grooves are symmetrically opened on the small-diameter shaft section of the T-shaped shaft 4, and the key 10 installed in the key groove is adapted to the guiding groove 11 provided on the inner hole wall of the movable end cover 5. When the movable end cover 5 moves axially, the cooperation of the key 10 and the guiding groove 11 guides the movable end cover 5 to ensure the stability of the movable end cover 5 during movement; The part of the small-diameter shaft section of the T-shaped shaft 4 that passes through the inner hole of the movable end cover 5 is a screw rod, that is, an external thread is made on the outer wall of the small-diameter shaft section to form a screw rod, and the movable end cover 5 is elastically installed on the T-shaped shaft 4 through a spring 12, a gasket and a nut 17 adapted to the end of the screw rod. During the backward movement of the movable end cover 5, the spring 12 is compressed, providing conditions for the automatic reset of the movable end cover 5; Specifically, a convex ring 13 is concentrically provided on the outer end face of the movable end cover 5, and the guiding groove 11 penetrates through the hole wall of the convex ring 13 to improve the reliability of the guiding structure of the movable end cover 5; Specifically, the large-diameter disc of the T-shaped shaft 4 and the toothed belt pulley 2, the outer end cover 9 and the inner end cover 3 are fixedly connected into one body by a plurality of circumferentially evenly distributed screws.
[0025] The specific structure of the self-locking component is as follows: The self-locking component includes a swing arm 14 and a tension spring 15. One end of the swing arm 14 is rotatably installed on the inner end face of the movable end cover 5. The specific rotation structure can be that a screw passes through a through hole at one end of the swing arm 14 and is threadedly fixed on the movable end cover 5, enabling the swing arm 14 to freely rotate around this screw. And on the other end face of the swing arm 14, there is a semi-circular groove adapted to the positioning groove 6. One end of the tension spring 15 is fixed on the inner end face of the movable end cover 5. The fixing structure can fix a bolt on the movable end cover 5, so that one end of the tension spring 15 is sleeved on the head of the bolt for positioning. And the other end of the tension spring 15 is connected to a hole on the swing arm 14. In the above structure, by arranging the swing arm 14 on the movable end cover 5 that is adapted to the positioning groove 6 on the T-shaped shaft 4, under the action of the tension spring 15, the swing arm 14 is driven by the movable end cover 5 to move to a position corresponding to the positioning groove 6 for adaptation, preventing the phenomenon that the movable end cover 5 automatically resets when the large torque disappears, eliminating the problem of resetting without impurities being processed, and under the control of the detection switch 8, realizing the automatic shutdown of the locomotive, providing conditions for the effective treatment of impurities;
[0026] In order to facilitate the manual reset of the swing arm 14, a long groove 16 is specifically made on the swing arm 14 for manually rotating the swing arm 14 and resetting it.
[0027] This technical solution solves the problems of poor reliability, long reset time and low accuracy of the traditional protection structure of the leveling device, eliminates the adverse effects of sundries on cigarette rods, improves the quality of cigarette rods, has a simple structure, is sensitive in response, high in accuracy, good in safety and reliability, and has high use value.
[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0029] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. The mechanical self-locking overload clutch of the YJ17 cigarette making machine comprises a toothed belt pulley (2) rotatably mounted on a driving shaft sleeve (1), and an outer end cover (9) and an inner end cover (3) coaxially arranged on both sides of the toothed belt pulley (2), and is characterized in that: On the outer side of the outer end cover (9), there is a T-shaped shaft (4). The T-shaped shaft (4), the toothed belt pulley (2), the outer end cover (9), and the inner end cover (3) are fixedly connected into a whole by a plurality of screws evenly distributed in the circumferential direction. An end cover (5) that moves axially along the T-shaped shaft (4) is elastically guided and installed on the T-shaped shaft (4). A self-locking member that is adapted to the positioning groove (6) on the T-shaped shaft (4) and is used to position the end cover (5) is provided on the end cover (5). Trapezoidal blocks (7) that are in corresponding positions and in contact with each other are fixed on the end faces of the end cover (5) and the outer end cover (9). When the leveling device is jammed and the torque is too large, the trapezoidal blocks (7) that are in contact and cooperate with each other are gradually displaced and separated, and during this process, the end cover (5) is pushed outward to move until the self-locking member is adapted to and positioned with the positioning groove (6). A detection switch (8) for detecting the position of the end cover (5) is provided on the outer side of the end cover (5), and the detection switch (8) is connected to the on-off circuit of the locomotive.
2. The mechanical self-locking overload clutch of the YJ17 cigarette making machine according to claim 1, characterized in that: Two key grooves are symmetrically formed on the small-diameter shaft section of the T-shaped shaft (4). The key (10) installed in the key groove is adapted to the guiding groove (11) provided on the inner hole wall of the end cover (5). The part of the small-diameter shaft section of the T-shaped shaft (4) that passes through the inner hole of the end cover (5) is a screw rod. The end cover (5) is elastically installed on the T-shaped shaft (4) through a spring (12), a gasket sleeved on the screw rod, and a nut (17) adapted to the end of the screw rod.
3. The mechanical self-locking overload clutch of the YJ17 cigarette making machine according to claim 2, characterized in that: A convex ring (13) is concentrically provided on the outer end face of the end cover (5), and the guiding groove (11) runs through the hole wall of the convex ring (13).
4. The mechanical self-locking overload clutch of the YJ17 cigarette-making machine according to claim 3, characterized in that: The large-diameter disc of the T-shaped shaft (4), the toothed belt pulley (2), the outer end cover (9), and the inner end cover (3) are fixedly connected into a whole by a plurality of screws evenly distributed in the circumferential direction.
5. The mechanical self-locking overload clutch of the YJ17 cigarette making machine according to claim 1, wherein: The self-locking member includes a swing arm (14) and a tension spring (15). One end of the swing arm (14) is rotatably installed on the inner end face of the end cover (5). A semi-circular groove adapted to the positioning groove (6) is provided on the other end face of the swing arm (14). One end of the tension spring (15) is fixed on the inner end face of the end cover (5), and the other end of the tension spring (15) is connected to the hole on the face of the swing arm (14).
6. The mechanical self-locking overload clutch of the YJ17 cigarette making machine according to claim 5, wherein: A long groove (16) for manually rotating the swing arm (14) and resetting it is formed on the swing arm (14).
7. The mechanical self-locking overload clutch of the YJ17 cigarette making machine according to any one of claims 1-6, characterized in that: The detection switch (8) is a metal detection proximity switch.