Belt wheel cleaning mechanism and cigarette making machine

Abstract

This application relates to a cloth belt wheel cleaning mechanism and a cigarette rolling machine. The cloth belt wheel cleaning mechanism includes: a scraper, a mounting base, a mounting shaft, a positioning element, and a torsion spring. The scraper is used to fit against the outer circumferential surface of the cloth belt wheel. The scraper is mounted on the mounting base. The positioning element is sleeved and fixed to the mounting shaft. Both the mounting base and the torsion spring are sleeved on the mounting shaft, and the torsion spring is positioned between the mounting base and the positioning element, with its two ends connected to the mounting base and the positioning element, respectively. In the above-mentioned cloth belt wheel cleaning mechanism, the torsion spring generates an initial preload between the mounting base and the positioning element through its own elastic deformation, ensuring that the scraper always adheres to the surface of the cloth belt wheel with a certain pressure. Moreover, the torsion spring itself has elastic properties, and the torsion spring automatically balances the pressure through elastic deformation. When the scraper encounters hard objects (such as clumps of dirt or foreign objects) on the surface of the cloth belt wheel, the torsion spring can absorb the instantaneous impact energy through torsional deformation, preventing damage to the mounting shaft, scraper, or cloth belt wheel due to rigid collision.

Description

Technical Field

[0001] This application relates to the field of cigarette machine cleaning technology, and in particular to a cloth belt wheel cleaning mechanism and a cigarette machine. Background Technology

[0002] A cigarette rolling machine is a machine used to process cigarettes. A cigarette rolling machine includes a belt and belt pulleys. The belt pulleys are the driving components of the belt. The belt passes through the belt pulleys, driven pulleys, and cigarette guns, driving the cigarette paper and tobacco bundles forward.

[0003] The surface of the belt pulley is made of rubber. In the production of heated cigarettes, the raw material is flavored thin sheet tobacco, which has strong adhesion. During the movement of the belt pulley, a small amount of tobacco and tobacco dust that overflows or splashes will stick to the surface of the belt pulley if not cleaned in time due to the added flavorings and the characteristics of easy moisture absorption. This will cause the diameter of the belt to increase, which in turn will lead to an increase in the linear speed of the belt and cause fluctuations in the length of the cigarette.

[0004] In related technologies, existing methods typically involve using a scraper to remove tobacco shreds and tobacco dust adhering to the cloth belt pulley. However, during the scraping process, if the scraper encounters hard materials, it bears a heavy load, which can easily lead to damage to the scraper. Furthermore, the debris falling from the scraper can easily fly around and scratch the surrounding processed products. Utility Model Content

[0005] Therefore, it is necessary to provide a cloth belt wheel cleaning mechanism and a cigarette rolling machine to address the problem that the scraper is easily damaged when it encounters hard substances.

[0006] A cloth belt wheel cleaning mechanism is used to clean tobacco shreds and tobacco dust adhering to a cloth belt wheel, the cloth belt wheel cleaning mechanism comprising:

[0007] A scraper is used to fit against the outer circumferential surface of the belt pulley;

[0008] Mounting base, the shovel is mounted on the mounting base;

[0009] The mounting shaft, positioning element, and torsion spring are provided. The positioning element is sleeved and fixed to the mounting shaft. The mounting base and the torsion spring are both sleeved on the mounting shaft, and the torsion spring is disposed between the mounting base and the positioning element. The two ends of the torsion spring are respectively connected to the mounting base and the positioning element.

[0010] In one embodiment, the mounting shaft includes a first segment and a second segment, the radial dimension of the first segment being smaller than the radial dimension of the second segment, so that a stepped surface is formed at the connection between the first segment and the second segment, the mounting seat is sleeved on the first segment and can abut against the stepped surface, and the positioning member and the torsion spring are sleeved on the second segment.

[0011] In one embodiment, a base is also included, the base being connected to one end of the second segment opposite to the first segment.

[0012] In one embodiment, a first locking member is further included. The mounting base is provided with a first mounting hole, and the shovel is provided with a second mounting hole. The first locking member passes through the second mounting hole and the first mounting hole in sequence to connect the shovel and the mounting base.

[0013] In one embodiment, the second mounting hole is an elongated hole.

[0014] In one embodiment, a retaining ring and a second locking member are further included. The retaining ring is sleeved on the mounting shaft and located at the end of the mounting base opposite to the torsion spring. The second locking member passes through the retaining ring and the mounting base in sequence to connect the retaining ring and the mounting base.

[0015] In one embodiment, the blade of the shovel forms an angle with the axial direction of the belt pulley.

[0016] In one embodiment, the system further includes an air blowing assembly comprising an air source and an air nozzle connected together, the air outlet of the air nozzle facing the outer peripheral surface of the belt pulley, and the air nozzle being connected to the mounting shaft.

[0017] In one embodiment, the air blowing assembly further includes an adjusting member, which includes a connecting retaining ring, a mounting block, and a third locking member. The mounting block is provided with the air nozzle, the retaining ring is engaged with the mounting shaft, and the third locking member is used to lock the retaining ring and the mounting shaft.

[0018] This application also provides a cigarette rolling machine, including the cloth belt wheel cleaning mechanism described in any of the above claims.

[0019] The aforementioned belt pulley cleaning mechanism connects the scraper to a mounting base, which is then fitted onto a mounting shaft. A positioning element and a torsion spring are mounted on the mounting shaft, with the torsion spring positioned between the mounting base and the positioning element. The two ends of the torsion spring are connected to the mounting base and the positioning element, respectively. Through its elastic deformation, the torsion spring generates an initial preload between the mounting base and the positioning element. The elastic characteristics of the torsion spring allow the scraper to automatically adjust its contact angle and pressure based on real-time resistance, ensuring that the scraper always maintains a certain pressure against the belt pulley surface. Furthermore, the torsion spring itself possesses elastic properties, automatically balancing pressure through elastic deformation. When the scraper encounters hard objects (such as clumps of dirt or foreign objects) on the belt pulley surface, the torsion spring absorbs the instantaneous impact energy through torsional deformation, preventing damage to the mounting shaft, scraper, or belt pulley due to rigid collisions. In addition, when the blade shifts due to external force (such as cleaning large stains), the elastic restoring force of the torsion spring can drive the mounting base to rotate around the mounting axis, so that the blade automatically returns to its initial working position without manual intervention. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of the cloth belt wheel cleaning mechanism provided in an embodiment of this application.

[0021] Figure 2 This is a second-view structural schematic diagram of the cloth belt wheel cleaning mechanism provided in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the mounting shaft provided in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the mounting base provided in an embodiment of this application.

[0024] Figure 5 This is a schematic diagram of the structure of the mounting base with a shovel provided in the embodiment of this application.

[0025] Figure label:

[0026] 100. Shovel blade; 110. Second mounting hole;

[0027] 200, Mounting base; 210, First mounting hole; 220, Abutting surface; 230, First locking element; 240, Retaining ring; 250, Second locking element;

[0028] 300. Mounting shaft; 310. First section; 320. Second section;

[0029] 400. Positioning components;

[0030] 500, Torsion spring;

[0031] 600. Base;

[0032] 700. Air valve; 710. Air tube;

[0033] 800. Adjusting component; 810. Engaging ring; 820. Mounting block; 830. Third locking component;

[0034] 900. Cloth belt pulley. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 mechanical connection or an electrical connection; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" 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. Similarly, "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.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] This application provides a cloth belt pulley cleaning mechanism for cleaning tobacco shreds and tobacco dust adhering to the cloth belt pulley 900, such as... Figure 1 and Figure 2 As shown, the cloth belt pulley cleaning mechanism includes: a scraper 100, a mounting base 200, a mounting shaft 300, a positioning element 400, and a torsion spring 500. The scraper 100 is used to fit against the outer circumferential surface of the cloth belt pulley 900. The scraper 100 is mounted on the mounting base 200. The positioning element 400 is sleeved and fixed to the mounting shaft 300. The mounting base 200 and the torsion spring 500 are both sleeved on the mounting shaft 300, and the torsion spring 500 is located between the mounting base 200 and the positioning element 400. The two ends of the torsion spring 500 are respectively connected to the mounting base 200 and the positioning element 400.

[0042] The aforementioned belt pulley cleaning mechanism connects the scraper 100 to the mounting base 200, which is fitted onto the mounting shaft 300. A positioning element 400 and a torsion spring 500 are mounted on the mounting shaft 300. The torsion spring 500 is positioned between the mounting base 200 and the positioning element 400, with its two ends connected to the mounting base 200 and the positioning element 400 respectively. Through its elastic deformation, the torsion spring 500 generates an initial preload between the mounting base 200 and the positioning element 400. The elastic characteristics of the torsion spring 500 allow the scraper 100 to automatically adjust its contact angle and pressure based on real-time resistance, ensuring that the scraper 100 always maintains a certain pressure against the surface of the belt pulley 900. Moreover, since the torsion spring 500 has its own elastic properties, it can automatically balance the pressure through elastic deformation. When the scraper 100 encounters hard objects (such as clumps of dirt or foreign objects) on the surface of the belt pulley 900, the torsion spring 500 can absorb the instantaneous impact energy through torsional deformation, thus preventing the mounting shaft 300, scraper 100 or belt pulley 900 from being damaged by rigid collision.

[0043] In addition, when the scraper 100 is displaced due to external force (such as cleaning large stains), the elastic restoring force of the torsion spring 500 can drive the mounting base 200 to rotate around the mounting shaft 300, so that the scraper 100 automatically returns to the initial working position without manual intervention.

[0044] In this embodiment, the positioning element 400 is a clamp. In other embodiments, the positioning element 400 may also be a clamp or other structure, as long as it can be locked onto the mounting shaft 300.

[0045] In one embodiment, such as Figures 1 to 3 As shown, the mounting shaft 300 includes a first section 310 and a second section 320. The radial dimension of the first section 310 is smaller than that of the second section 320, so that a stepped surface is formed at the connection between the first section 310 and the second section 320. The mounting seat 200 is sleeved on the first section 310 and abuts against the stepped surface. The positioning member 400 and the torsion spring 500 are sleeved on the second section 320. The mounting shaft 300 adopts a segmented design. The radial dimensions of the first segment 310 and the second segment 320 of the mounting shaft 300 are set differently, so that the connection between the first segment 310 and the second segment 320 forms a stepped surface. The mounting seat 200 is sleeved on the first segment 310 and can abut against the stepped surface. The stepped surface limits the mounting seat 200, preventing the mounting seat 200 from moving axially. When the blade 100 is under load, the mounting seat 200 can move slightly axially to compress the torsion spring 500, reducing rigid impact through elastic buffering. At the same time, the restoring force of the torsion spring 500 makes the blade 100 automatically return to its initial position.

[0046] Furthermore, the mounting base 200 is fitted onto the first section 310, and the positioning element 400 and torsion spring 500 are fitted onto the second section 320. The mounting base 200, positioning element 400, and torsion spring 500 are arranged in sections along the axial direction of the mounting shaft 300 to avoid radial interference or installation conflicts caused by different components having the same shaft diameter. Moreover, since the shaft diameter of the second section 320 is larger, the torsion spring 500 can provide greater radial support force, ensuring that the torsion spring 500 is not easily deformed during compression or torsion, and stably transmits elastic force.

[0047] In one embodiment, such as Figures 1 to 3 As shown, the cloth belt wheel cleaning mechanism also includes a base 600, which is connected to the end of the second section 320 opposite to the first section 310. By setting the base 600 at the end of the second section 320 opposite to the first section 310, the base 600 is used to connect to the body of the cigarette machine, thereby facilitating the fixing of the cloth belt wheel cleaning mechanism to the body.

[0048] In one embodiment, such as Figures 1 to 5 As shown, the cloth belt cleaning mechanism also includes a first locking member 230. The mounting base 200 has a first mounting hole 210, and the scraper 100 has a second mounting hole 110. The first locking member 230 passes through the second mounting hole 110 and the first mounting hole 210 in sequence to connect the scraper 100 and the mounting base 200. By providing the first mounting hole 210 on the mounting base 200 and the second mounting hole 110 on the scraper 100, and by using the locking member to pass through the second mounting hole 110 and the first mounting hole 210, the scraper 100 and the mounting base 200 are locked together.

[0049] In this embodiment, as Figures 1 to 5 As shown, the second mounting hole 110 is an elongated hole. The position of the scraper 100 relative to the mounting base 200 can be finely adjusted along the length of the elongated hole, thereby changing the contact angle (such as tilt angle and cutting depth) between the scraper 100 and the surface of the belt pulley 900. Moreover, when the scraper 100 contacts a hard object, the torsion spring 500 provides axial cushioning through elastic deformation, while the elongated hole allows the scraper 100 to swing or shift slightly (because the first locking member 230 can slide within the elongated hole), forming a double cushioning mechanism.

[0050] In this embodiment, as Figures 1 to 5 As shown, the mounting base 200 is provided with an abutment surface 220. The plane of the abutment surface 220 forms an angle with the outer peripheral surface of the belt pulley 900. The abutment surface 220 is in contact with the side of the blade of the scraper 100.

[0051] In one embodiment, such as Figures 1 to 5As shown, the belt pulley cleaning mechanism also includes a retaining ring 240 and a second locking member 250. The retaining ring 240 is sleeved on the mounting shaft 300 and located at the end of the mounting base 200 opposite to the torsion spring 500. The second locking member 250 passes through the retaining ring 240 and the mounting base 200 in sequence to connect the retaining ring 240 and the mounting base 200. The retaining ring 240 is located at the end of the mounting base 200 opposite to the torsion spring 500 to limit the axial movement range of the mounting base 200 on the first section 310 of the mounting shaft 300, preventing the mounting base 200 from falling off or shifting to the opposite side of the torsion spring 500. Furthermore, the retaining ring 240 can prevent dust, impurities, etc., from entering the mating gap between the mounting shaft 300 and the mounting base 200, avoiding jamming or wear caused by foreign object intrusion and extending the service life of the mechanism. In addition, when the torsion spring 500 pushes the mounting base 200 to rotate through elastic force, the retaining ring 240 can provide a reverse support force to ensure that the preload of the torsion spring 500 is effectively transmitted to the mounting base 200 and maintain the contact pressure between the scraper 100 and the belt pulley 900.

[0052] By setting a second locking element 250 to pass through the retaining ring 240 and the mounting base 200 in sequence, the two are rigidly connected as one, preventing the retaining ring 240 and the mounting base 200 from sliding or separating relative to each other under axial force.

[0053] In one embodiment, such as Figures 1 to 5 As shown, the blade of the scraper 100 forms an angle with the axis of the belt pulley 900. The inclined blade generates a tangential cutting force as the belt pulley 900 rotates, rather than a perpendicular squeeze. This allows the blade to more effectively cut into stains, deposits, or fiber gaps on the surface of the belt pulley 900, "scraping" or "peeling" impurities, rather than simply relying on pressure to crush them, making it particularly suitable for removing sticky or hardened contaminants.

[0054] In one embodiment, such as Figure 1 and Figure 2 As shown, the belt pulley cleaning mechanism also includes an air blowing assembly, which includes a connected air source and an air nozzle 700. The air outlet of the air nozzle 700 faces the outer peripheral surface of the belt pulley 900, and the air nozzle 700 is connected to the mounting shaft 300. By setting up the air blowing assembly, the air source is connected to the air nozzle 700 through the air pipe 710 to assist the scraper 100 in cleaning. After the scraper 100 scrapes off the attached impurities (such as dust, fibers, adhesive stains, etc.) against the outer peripheral surface of the belt pulley 900, the high-speed airflow ejected by the air nozzle 700 can promptly blow away the scraped impurities, preventing them from adhering to or accumulating again on the surface of the belt pulley 900 or near the scraper 100, thus improving the thoroughness of a single cleaning. Moreover, for grooves, textures, or depressions on the surface of the belt pulley 900, areas that the scraper 100 cannot fully reach, the airflow can penetrate and blow away hidden impurities through impact force, achieving a dual cleaning effect of "scraping + blowing".

[0055] In this embodiment, as Figure 1As shown, the blade of the shovel 100 extends towards the side closer to the air nozzle 700.

[0056] In one embodiment, such as Figure 1 and Figure 2 As shown, the air blowing assembly also includes an adjusting component 800, which includes a connecting retaining ring 810, a mounting block 820, and a third locking component 830. The mounting block 820 is equipped with an air nozzle 700. The retaining ring 810 is engaged with the mounting shaft 300, and the third locking component 830 locks the retaining ring 810 and the mounting shaft 300. By setting the adjusting component 800, the retaining ring 810 is fixed to the mounting shaft 300 by the third locking component 830. When the third locking component 830 is released, the adjusting component 800 can slide axially along the mounting shaft 300 (adjusting the relative height between the air nozzle 700 and the belt pulley 900) or rotate circumferentially (adjusting the alignment of the air nozzle 700 in the circumferential direction of the belt pulley 900), further improving the cleaning effect. Adjustment component 800 is adapted to cloth pulleys 900 of different sizes or installation positions to ensure that the air outlet of nozzle 700 is always accurately facing the area to be cleaned on the outer circumference of cloth pulley 900 (such as the residual stains after scraping by scraper 100).

[0057] This application also provides a cigarette rolling machine, including the cloth belt wheel cleaning mechanism of any of the above. The cloth belt wheel 900 cleaning mechanism is installed on the body of the cigarette rolling machine. A scraper 100 is elastically pressed against the outer circumference of the cloth belt wheel 900 by a torsion spring 500, and can continuously scrape off tobacco shreds, adhesive residue, and other debris adhering to the surface as the cloth belt wheel 900 rotates, preventing debris accumulation from affecting the adsorption performance of the cloth belt wheel 900 (such as the positioning accuracy during filter tip assembly and cigarette feeding). Furthermore, the elastic design (torsion spring 500) can adapt to minor deformations or installation errors of the cloth belt wheel 900, ensuring uniform contact throughout the circumference and thorough cleaning without any blind spots.

[0058] In addition, the engaging design of the positioning element 400 and the mounting shaft 300 supports tool-free quick disassembly and assembly, facilitating the replacement of worn scraper 100 or the overhaul of torsion spring 500, thus shortening maintenance time. The preload of torsion spring 500 can be adjusted by the position of the positioning element 400 (e.g., axially moving the positioning element 400 to compress the torsion spring 500), adapting to different cleaning intensity requirements without additional tools.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cloth belt pulley cleaning mechanism for cleaning tobacco shreds and tobacco dust adhering to a cloth belt pulley (900), characterized in that, The cloth belt wheel cleaning mechanism includes: A scraper (100) is used to fit against the outer circumferential surface of the belt pulley (900); Mounting base (200), the shovel (100) is mounted on the mounting base (200); The mounting shaft (300), the positioning element (400), and the torsion spring (500) are mounted on and fixed to the mounting shaft (300). The mounting base (200) and the torsion spring (500) are both mounted on the mounting shaft (300), and the torsion spring (500) is disposed between the mounting base (200) and the positioning element (400). The two ends of the torsion spring (500) are respectively connected to the mounting base (200) and the positioning element (400).

2. The cloth belt wheel cleaning mechanism according to claim 1, characterized in that, The mounting shaft (300) includes a first segment (310) and a second segment (320). The radial dimension of the first segment (310) is smaller than that of the second segment (320) so that a stepped surface is formed at the connection between the first segment (310) and the second segment (320). The mounting seat (200) is sleeved on the first segment (310) and can abut against the stepped surface. The positioning member (400) and the torsion spring (500) are sleeved on the second segment (320).

3. The cloth belt wheel cleaning mechanism according to claim 2, characterized in that, It also includes a base (600) connected to one end of the second segment (320) opposite to the first segment (310).

4. The cloth belt wheel cleaning mechanism according to claim 1, characterized in that, It also includes a first locking member (230), the mounting base (200) is provided with a first mounting hole (210), the shovel (100) is provided with a second mounting hole (110), and the first locking member (230) passes through the second mounting hole (110) and the first mounting hole (210) in sequence to connect the shovel (100) and the mounting base (200).

5. The cloth belt wheel cleaning mechanism according to claim 4, characterized in that, The second mounting hole (110) is an elongated hole.

6. The cloth belt wheel cleaning mechanism according to claim 1, characterized in that, It also includes a retaining ring (240) and a second locking member (250), the retaining ring (240) being sleeved on the mounting shaft (300) and located at the end of the mounting base (200) away from the torsion spring (500), and the second locking member (250) passing through the retaining ring (240) and the mounting base (200) in sequence to connect the retaining ring (240) and the mounting base (200).

7. The cloth belt wheel cleaning mechanism according to claim 1, characterized in that, The blade of the shovel (100) forms an angle with the axial direction of the belt pulley (900).

8. The cloth belt wheel cleaning mechanism according to claim 1, characterized in that, It also includes an air blowing assembly, which includes an air source and an air nozzle (700) connected to each other. The air outlet of the air nozzle (700) faces the outer peripheral surface of the belt pulley (900), and the air nozzle (700) is connected to the mounting shaft (300).

9. The cloth belt wheel cleaning mechanism according to claim 8, characterized in that, The air blowing assembly also includes an adjusting member (800), which includes a connecting retaining ring (810), a mounting block (820), and a third locking member (830). The mounting block (820) is provided with the air nozzle (700), the retaining ring (810) is engaged with the mounting shaft (300), and the third locking member (830) is used to lock the retaining ring (810) and the mounting shaft (300).

10. A cigarette rolling machine, characterized in that, Includes the cloth belt wheel cleaning mechanism as described in any one of claims 1-9.

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