Diameter adjustment positioning tool for tape wheel

Abstract

The utility model discloses a technical field of tobacco processing equipment provides a kind of cloth belt wheel diameter adjustment positioning tool, including positioning shaft, rotary arm and measuring arm;The positioning shaft is connected with the axle of cloth belt wheel, the rotary arm is rotatably connected with the positioning shaft, the measuring arm is connected with the rotary arm;Wherein, the positioning shaft and the measuring arm are perpendicular with the rotary arm, to form "U" shape structure, so that the cloth belt wheel adjustment to the measuring arm and the outer wall surface contact of the cloth belt wheel.By positioning shaft, rotary arm and measuring arm formed the positioning tool of similar "U" shape structure, it can rotate arm's rotation cooperation measuring arm realizes the quick positioning of cloth belt wheel diameter, can realize once adjustment and reach predetermined diameter, reduce the error and the number of adjustment of adjustment, and by the rotation of rotary arm can verify whether cloth belt wheel itself appears deformation, improve the quality of for cloth belt wheel adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, and in particular to a positioning fixture for adjusting the diameter of a cloth belt pulley. Background Technology

[0002] The belt pulley is the driving pulley that propels the belt synchronous device at its linear speed. The linear speed of the belt is determined by it, and the pulley's linear speed is related to its diameter and rotational speed. Belt pulleys typically employ an expansion-type structure. Both excessively tight and excessively loose pulleys will affect overall performance. Therefore, regular maintenance and adjustment of the pulley diameter are necessary during daily use to ensure it is within the appropriate range.

[0003] In related technologies, when adjusting the diameter of the belt pulley, workers touch the cigarette paper to determine whether the diameter adjustment of the belt pulley is in place. This makes the entire adjustment process require repeated adjustments, resulting in a large number of rework sessions, long time consumption, and large errors. Utility Model Content

[0004] This utility model provides a positioning fixture for adjusting the diameter of a cloth belt pulley, which solves the defects of the prior art in that the adjustment of the cloth belt pulley is cumbersome, time-consuming, and has a large adjustment error.

[0005] This utility model provides a positioning fixture for adjusting the diameter of a cloth belt pulley, comprising: a positioning shaft, a rotating arm, and a measuring arm; the positioning shaft is connected to the axis of the cloth belt pulley, the rotating arm is rotatably connected to the positioning shaft, and the measuring arm is connected to the rotating arm; wherein, the positioning shaft and the measuring arm are both perpendicular to the rotating arm to form a "U" shape, so that the cloth belt pulley is adjusted to the point where the measuring arm contacts the outer wall surface of the cloth belt pulley.

[0006] According to the cloth belt wheel diameter adjustment and positioning fixture provided by this utility model, the rotating arm is detachably connected to the positioning shaft, and the measuring arm is detachably connected to the rotating arm.

[0007] According to the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model, one end of the rotating arm is provided with a rotating hole, and the rotating hole is rotatably engaged with the positioning shaft so that the rotating arm rotates around the positioning shaft.

[0008] According to the cloth belt wheel diameter adjustment and positioning fixture provided by this utility model, the other end of the rotating arm is provided with a plug-in end, and a positioning hole is provided at one end of the measuring arm, and the plug-in end is plugged into the positioning hole.

[0009] According to the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model, the positioning hole is a polygonal hole to restrict the circumferential degree of freedom of the measuring arm.

[0010] According to the cloth belt wheel diameter adjustment and positioning fixture provided by this utility model, a rotary bearing is provided in the rotary hole, and a limiting groove is provided on the inner wall surface of the inner ring of the rotary bearing. A limiting protrusion is provided on the positioning shaft, and the limiting groove and the limiting protrusion cooperate to limit the movement.

[0011] According to the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model, the shaft of the positioning shaft is provided with an external thread section, a rotating engagement section, a smooth rod section and a limiting post section in sequence. The outer diameter of the smooth rod section is larger than that of the rotating engagement section, the external thread section and the limiting post section. The rotating engagement section is rotatably connected to the positioning shaft. The limiting post section is inserted into the cloth belt pulley. The thread section is provided with a limiting nut.

[0012] According to the cloth belt wheel diameter adjustment and positioning fixture provided by this utility model, the limiting column segment is constructed as a polygonal column structure.

[0013] According to the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model, the measuring arm has a contact part at one end away from the rotating arm, and the contact part is used to contact the outer wall surface of the cloth belt pulley.

[0014] According to the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model, the contact part includes a concave arc-shaped surface, which is used to fit against the cloth belt pulley.

[0015] The cloth belt pulley diameter adjustment and positioning fixture provided by this utility model forms a positioning fixture with a "U"-shaped structure through a positioning shaft, a rotating arm, and a measuring arm. It can quickly position the diameter of the cloth belt pulley by rotating the rotating arm in conjunction with the measuring arm, and can achieve the predetermined diameter in one adjustment, reducing the adjustment error and the number of adjustments. Moreover, the rotation of the rotating arm can verify whether the cloth belt pulley itself is deformed, thus improving the quality of cloth belt pulley adjustment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is the overall assembly drawing of the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0018] Figure 2 This is one of the structural schematic diagrams of the positioning shaft in the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0019] Figure 3This is the second schematic diagram of the positioning shaft in the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0020] Figure 4 This is one of the structural schematic diagrams of the rotating arm in the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0021] Figure 5 This is the second schematic diagram of the rotating arm in the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0022] Figure 6 This is a schematic diagram of the measuring arm in the cloth belt pulley diameter adjustment and positioning fixture provided by this utility model.

[0023] Figure label: 1. Positioning shaft; 11. External thread section; 12. Rotary mating section; 13. Polished rod section; 14. Limiting post section; 15. Limiting protrusion; 2. Rotating arm; 21. Rotating hole; 211. Rotary bearing; 212. Limiting groove; 22. Insertion end; 3. Measuring arm; 31. Contact part; 32. Positioning hole; 4. Limiting nut; 5. Belt pulley. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of clarifying the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0027] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "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 indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] The automated cigarette production line with filter tips is a key piece of equipment in large and medium-sized cigarette rolling production, with a designed capacity of 7000 cigarettes / min. The belt pulley plays a crucial role in this equipment. The diameter of the belt pulley is usually adjustable, employing an expansion-type pulley. This method ensures the belt has appropriate tension, thereby achieving efficient production. In some cases, it is necessary to adjust the belt pulley to remove and install the belt (e.g., when the belt is worn and needs replacement). In these situations, the diameter of the belt pulley needs to be adjusted to re-tension the belt (i.e., adjusting the sector block in the expansion-type belt pulley to increase its diameter).

[0030] In related technologies, since the belt pulley is located inside the equipment and the space is very small, the belt pulley is pressed by touch during the adjustment process to adjust the diameter of the belt pulley through touch feedback. This method requires frequent machine stops, repeated determination of the appropriate position, and has a large human error.

[0031] Regarding the problems in related technologies, such as Figures 1-4 As shown, this utility model provides a positioning fixture for adjusting the diameter of a belt pulley, including a positioning shaft 1, a rotating arm 2, and a measuring arm 3. The positioning shaft 1 is axially connected to the belt pulley 5, the rotating arm 2 is rotatably connected to the positioning shaft 1, and the measuring arm 3 is connected to the rotating arm 2. Both the positioning shaft 1 and the measuring arm 3 are perpendicular to the rotating arm 2, forming a "U" shape, so that the belt pulley 5 is adjusted until the measuring arm 3 contacts the outer wall surface of the belt pulley 5. During the diameter adjustment of the belt pulley 5, it needs to be adjusted to a suitable position so that the tension of the belt is within a reasonable range. In this embodiment, the cooperation of the rotating arm 2 and the measuring arm 3 ensures that the belt is in contact with the measuring arm 3 at the appropriate position, at which point the belt has reasonable tension.

[0032] Specifically, the rotating arm 2 connects the positioning shaft 1 and the measuring arm 3, and the rotating arm 2 is arranged radially along the belt pulley 5. The rotating arm 2 has a defined length, which ensures a defined distance between the measuring arm 3 connected to the rotating arm 2 and the positioning shaft 1. By setting this length as the diameter of the belt pulley 5 in a stable working state, positioning can be achieved through the measuring arm 3. That is, when adjusting the diameter, when the outer wall surface of the belt pulley 5 contacts the measuring arm 3, it indicates that the diameter of the belt pulley 5 has been adjusted to the correct position. The entire adjustment is convenient and quick, and this method enables... In specific configuration, a connecting part is provided at the axis of the belt pulley 5. The positioning shaft 1 is connected to the belt pulley 5 through the connecting part, and the axis of the positioning shaft 1 is collinear with the axis of the belt pulley 5. This ensures that the minimum distance between the axis of the positioning shaft 1 and the measuring arm 3 is the diameter of the belt pulley 5. By setting the minimum distance between the axis of the positioning shaft 1 and the measuring arm 3 as the diameter of the belt pulley 5 under stable working conditions, the diameter of the belt pulley 5 can be quickly determined, improving the efficiency and quality of adjustment.

[0033] Specifically, the diameter of the belt pulley 5 in a stable working state is set to 180mm. In this embodiment, the minimum distance between the axis of the positioning shaft 1 and the measuring arm 3 is set to 90mm, so that the belt pulley 5 is adjusted into position when the outer wall surface of the belt pulley 5 contacts the measuring arm 3 during adjustment, thereby achieving efficient and stable adjustment of the belt pulley 5.

[0034] Understandably, on the one hand, the belt pulley 5 is an expansion type belt pulley 5, which includes multiple circumferentially arranged sector blocks and an adjusting ring. The adjusting ring and the sector blocks are conical, so that the sector blocks gradually expand during the adjustment of the adjusting ring to increase the adjustment diameter. In this embodiment, the rotating arm 2 can rotate circumferentially, and the measuring arm 3 rotates together, thereby verifying whether each sector block is deformed, so that deformation can be detected in time, further improving the quality of belt pulley 5 adjustment. On the other hand, since the installation space of the belt pulley 5 is extremely narrow, it is difficult to measure with conventional measuring tools or fixtures (if conventional measuring tools and fixtures are used, the belt pulley 5 needs to be disassembled). This embodiment facilitates connection by using an external positioning shaft 1 and quickly realizes the diameter adjustment of the belt pulley 5.

[0035] In some embodiments, the rotating arm 2 is detachably connected to the positioning shaft 1, and the measuring arm 3 is detachably connected to the rotating arm 2. This detachable connection facilitates the carrying of the tooling and allows for installation in confined spaces.

[0036] Specifically, there are various ways to disassemble and connect, such as plug-in connection, pin connection, hinge connection and flange connection. In this embodiment, the disassembly and connection method facilitates the storage and carrying of the positioning tooling, and can be installed independently in confined spaces, thus improving its applicability.

[0037] In conjunction with the above embodiments, a rotating hole 21 is provided at one end of the rotating arm 2. The rotating hole 21 is rotatably engaged with the positioning shaft 1 so that the rotating arm 2 rotates around the positioning shaft 1. The rotating arm 2 needs to rotate around the positioning shaft 1 to detect whether the belt pulley 5 is deformed. In this embodiment, the rapid rotation of the selection arm is achieved through the engagement of the rotating hole 21 and the positioning shaft 1, and the overall structure is simple and easy to process.

[0038] Specifically, the rotating hole 21 is a round hole with a smooth inner wall surface. It is clearance-fitted with the positioning shaft 1, and the inner diameter of the rotating hole 21 is slightly larger than or equal to the outer diameter of the positioning shaft 1, thereby enabling the stable rotation of the rotating arm 2.

[0039] In conjunction with the above embodiments, such as Figures 3-5 As shown, a rotary bearing 211 is provided inside the rotary hole 21. A limiting groove 212 is provided on the inner wall surface of the inner ring of the rotary bearing 211, and a limiting protrusion 15 is provided on the positioning shaft 1. The limiting groove 212 and the limiting protrusion 15 cooperate to limit the movement. In addition to the method of rotating through the smooth rotary hole 21, this embodiment also provides another rotation method, namely, rotation is achieved through the rotary bearing 211, and the stability of the rotating arm 2 is achieved by the cooperation of the limiting protrusion 15 and the limiting groove 212, and stable rotation is achieved through the rotary bearing 211.

[0040] Specifically, the limiting protrusion 15 and the limiting groove 212 make the installation of the rotating arm 2 more convenient, and the combination of the limiting groove 212 and the limiting protrusion 15 can prevent the rotating arm 2 from shaking, thereby improving the positioning accuracy of the measuring arm 3 and improving the quality of adjustment.

[0041] In conjunction with the above embodiments, the other end of the rotating arm 2 is provided with a plug-in end 22, and a positioning hole 32 is provided at one end of the measuring arm 3. The plug-in end 22 is plugged into the positioning hole 32. The measuring arm 3 and the rotating arm 2 are connected by plugging in, which facilitates quick installation and enables positioning measurement in confined spaces.

[0042] In the above embodiment, the positioning hole 32 is a polygonal hole to restrict the circumferential degree of freedom of the measuring arm 3. The measuring arm 3 needs to have a stable position to improve the overall accuracy. In this embodiment, the polygonal hole enables a stable connection of the measuring arm 3, thereby improving the stability during the positioning process and preventing shaking that could affect the adjustment of the diameter of the belt pulley 5.

[0043] like Figure 1 As shown, the positioning hole 32 is a rectangular hole, and the corresponding insertion end 22 is a columnar structure with a rectangular cross-section, thereby achieving a stable insertion between the two, realizing an interference fit, and improving the overall stability.

[0044] In some embodiments, the shaft of the positioning shaft 1 is sequentially provided with an external thread section 11, a rotating engagement section 12, a smooth rod section 13, and a limiting post section 14. The outer diameter of the smooth rod section 13 is larger than that of the rotating engagement section 12, the external thread section 11, and the limiting post section 14. The rotating engagement section 12 is rotatably connected to the positioning shaft 1. The limiting post section 14 is inserted into the belt pulley 5, and a limiting nut 4 is provided on the thread section. The positioning shaft 1 needs to be connected to the belt pulley 5 to achieve positioning. In this embodiment, the limiting post section 14 is used to achieve the insertion connection with the belt pulley 5, thereby achieving stable positioning. Moreover, the columnar structure can achieve centering, so that the axis of the positioning shaft 1 and the axis of the belt pulley 5 are in the same position.

[0045] Specifically, the connection position of the positioning shaft 1 directly affects the positioning quality of the measuring arm 3. In this embodiment, an insertion hole is provided at the axis of the belt pulley 5, and the corresponding limiting post segment 14 of the positioning shaft 1 is inserted and connected to the insertion hole. This makes the positioning shaft 1 and the belt pulley 5 concentric, improving the positioning quality of the measuring arm 3. The limiting post segment 14 cooperates with the rotating hole 21 to realize the rotation of the rotating arm 2. Specifically, the limiting post segment 14 and the insertion hole are interference-fitted to achieve a stable connection. Of course, the interference can be set to be small, so as to facilitate removal after adjustment.

[0046] In conjunction with the above embodiments, the limiting column segment 14 is constructed as a polygonal column structure. The polygonal column structure effectively limits the movement and prevents the positioning shaft 1 from rotating, thus improving its stability.

[0047] Specifically, the limiting column segment 14 has a hexagonal structure, and a hexagonal hole is opened on the shaft of the belt pulley 5 to achieve mutual matching and limiting.

[0048] According to some embodiments provided by this utility model, such as Figure 6 As shown, the end of the measuring arm 3 furthest from the rotating arm 2 is provided with a contact portion 31, which is used to contact the outer wall surface of the belt pulley 5. The key to determining whether the belt pulley 5 is properly adjusted is whether its outer wall surface contacts the measuring arm 3; if contact occurs, it indicates that the adjustment is complete. This embodiment achieves effective contact through the contact portion 31, and avoids wear on the main structure of the measuring arm 3 during the contact process.

[0049] Specifically, the contact part 31 is connected to the measuring arm 3 by bolts or adhesive. The contact part 31 is made of wear-resistant material, which can prevent excessive wear during contact and improve its service life.

[0050] In the specific configuration of the above embodiment, the contact portion 31 is a concave arc-shaped surface, which is used to contact the belt pulley 5. The arc-shaped surface can achieve surface contact during the contact process with the belt pulley 5, thereby improving the quality of adjustment and inspection.

[0051] Specifically, the curved surface has the same radius of curvature as the belt pulley 5, thus achieving a fit between the curved surface and the outer wall of the belt pulley 5. After fitting, deformation at any position on the outer wall of the belt pulley 5 can lead to misfitting or interference, thereby enabling the detection of the outer contour of the belt pulley 5.

[0052] It is understandable that, in the above embodiments, the arc-shaped surface can, on the one hand, achieve close positioning with the belt pulley 5, and on the other hand, amplify the defects of the outer contour surface of the belt pulley 5, thereby achieving precise adjustment and rapid detection of the contour.

[0053] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment forms a positioning fixture with a "U"-shaped structure through the positioning shaft 1, the rotating arm 2, and the measuring arm 3. The rotation of the rotating arm 2, in conjunction with the measuring arm 3, enables rapid positioning of the diameter of the belt pulley 5, allowing for a single adjustment to achieve the predetermined diameter, reducing adjustment errors and the number of adjustments required. Furthermore, the rotation of the rotating arm 2 can verify whether the belt pulley 5 itself is deformed, improving the quality of the belt pulley 5 adjustment. Moreover, the arc-shaped surface further enhances the adjustment accuracy and enables rapid detection of the outer contour of the belt pulley 5.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixture for adjusting and positioning the diameter of a cloth belt pulley, characterized in that, include: Positioning axis, rotating arm, and measuring arm; The positioning shaft is connected to the axis of the belt pulley, the rotating arm is rotatably connected to the positioning shaft, and the measuring arm is connected to the rotating arm; The positioning shaft and the measuring arm are both perpendicular to the rotating arm to form a "U" shape, so that the belt pulley is adjusted to contact the outer wall surface of the measuring arm and the belt pulley.

2. The cloth belt pulley diameter adjustment and positioning fixture according to claim 1, characterized in that, The rotating arm is detachably connected to the positioning shaft, and the measuring arm is detachably connected to the rotating arm.

3. The cloth belt pulley diameter adjustment and positioning fixture according to claim 2, characterized in that, The rotating arm has a rotating hole at one end, which is rotatably engaged with the positioning shaft so that the rotating arm can rotate around the positioning shaft.

4. The cloth belt pulley diameter adjustment and positioning fixture according to claim 3, characterized in that, The other end of the rotating arm is provided with a plug-in end, and a positioning hole is provided at one end of the measuring arm, and the plug-in end is plugged into the positioning hole.

5. The cloth belt pulley diameter adjustment and positioning fixture according to claim 4, characterized in that, The positioning hole is a polygonal hole to restrict the circumferential degree of freedom of the measuring arm.

6. The cloth belt pulley diameter adjustment and positioning fixture according to claim 3, characterized in that, A rotary bearing is provided inside the rotary hole. A limiting groove is provided on the inner wall surface of the inner ring of the rotary bearing. A limiting protrusion is provided on the positioning shaft. The limiting groove and the limiting protrusion cooperate to limit the movement.

7. The cloth belt pulley diameter adjustment and positioning fixture according to claim 1, characterized in that, The positioning shaft has an external thread section, a rotating engagement section, a smooth rod section and a limiting post section in sequence. The outer diameter of the smooth rod section is larger than that of the rotating engagement section, the external thread section and the limiting post section. The rotating engagement section is rotatably connected to the positioning shaft. The limiting post section is inserted into the belt pulley. A limiting nut is provided on the thread section.

8. The cloth belt pulley diameter adjustment and positioning fixture according to claim 7, characterized in that, The limiting column segment is constructed as a polygonal column structure.

9. The cloth pulley diameter adjustment and positioning fixture according to claim 7, characterized in that, The measuring arm has a contact portion at one end away from the rotating arm, and the contact portion is used to contact the outer wall surface of the cloth belt pulley.

10. The cloth belt pulley diameter adjustment and positioning fixture according to claim 9, characterized in that, The contact portion includes a concave arc-shaped surface, which is used to fit against the belt pulley.

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