A paper tray tensioning device

Abstract

The utility model discloses a paper tray expansion device, including: expansion shaft, it is used for making the paper core of paper tray expansion, the expansion shaft has sleeve on, limiting ring, its fixed sleeve is established in the right -hand outer circle of sleeve, movable plate, left and right movable setting in the left side of sleeve, rotating cylinder, it rotates and sets up on movable plate, the rotating cylinder hollow setting, drive element, it is used for driving movable plate left and right movement. Among them, the opening of rotating cylinder is towards sleeve and sets up, the inner diameter of rotating cylinder is slightly greater than the outer diameter of sleeve, has realized to the stable expansion of paper tray to the smooth rotation of not influence, to the paper core part of paper tray of two ends and axial has been fixed, has solved the stability problem in the process of paper tray installation and rotation, has played the role of avoiding the slippage between water pine paper tray and expansion shaft.

Description

Technical Field

[0001] This utility model belongs to the technical field of tobacco machinery and equipment, and in particular relates to a paper tray tensioning device. Background Technology

[0002] In cigarette production, tipping paper is a key material for wrapping cigarette sticks, and its stable delivery is crucial to the forming quality and production efficiency of the cigarettes. Tipping paper is usually wound in the form of a paper tray. During processing, a tensioning device is used to fix the paper tray to the tensioning shaft, so that it rotates synchronously with the tensioning shaft and continuously releases the tipping paper. This ensures that the paper feeding speed is precisely matched with the rhythm of processes such as cigarette stick winding and packaging.

[0003] Conventional tightening devices fix the paper tray by applying radial force. However, in practical applications, slippage sometimes occurs between the cork paper tray and the tightening shaft, affecting subsequent processing. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a paper tray tensioning device, comprising: An expansion shaft for expanding the paper core of a paper tray, the expansion shaft having a sleeve; A limiting ring is fixedly fitted onto the outer ring of the right end of the sleeve; The movable plate, which moves left and right, is located on the left side of the sleeve; A rotating cylinder, which is rotatably mounted on a movable plate, is hollow. A driving element, used to drive the movable plate to move left and right.

[0005] The opening of the rotating cylinder faces the sleeve, and the inner diameter of the rotating cylinder is slightly larger than the outer diameter of the sleeve.

[0006] Furthermore, it also includes: Triangular protrusions are formed circumferentially on both the left end face of the limiting ring and the right end face of the rotating cylinder.

[0007] Furthermore, it also includes: The rotating cylinder has several weight-reducing grooves circumferentially arranged, and the weight-reducing grooves are connected to the hollow part of the rotating cylinder.

[0008] Furthermore, the driving element includes: A piston rod, one end of which is connected to the end of the movable plate away from the rotating cylinder.

[0009] Furthermore, the side of the limiting ring facing the rotating cylinder is a conical surface.

[0010] Furthermore, it also includes: The sleeve has several keyways circumferentially open, and the expansion shaft has an expansion key located in the keyway; The outer surface of the expansion key also has triangular protrusions.

[0011] Furthermore, the triangular protrusions on the rotating cylinder and the limiting ring are made of rubber.

[0012] The beneficial effects of this utility model are as follows: 1. It achieves stable expansion and tightening of the paper tray without affecting smooth rotation. The two ends and axial direction of the paper core of the paper tray are fixed, which solves the stability problem during the installation and rotation of the paper tray and prevents slippage between the water-loosening paper tray and the expansion shaft.

[0013] 2. The triangular protrusions increase the stability of the paper tray during rotation, preventing relative slippage between the paper core and the tensioning shaft, thus avoiding the impact of slippage on the cigarette production process.

[0014] 3. The weight reduction tank reduces the load on the drive components and optimizes the operation response performance of the device while ensuring its functionality.

[0015] 4. During axial tightening, the triangular protrusion of the tightening key can also play a role in preventing slippage, making the anti-slip effect better, ensuring the torque transmission between the tightening shaft and the sleeve, and improving the rotational stability of the paper tray. Attached Figure Description

[0016] Appendix Figure 1 This is a front view of the present invention; Appendix Figure 2 This is a structural diagram of the sleeve; Appendix Figure 3 This is a structural diagram of the rotating cylinder; Appendix Figure 4 Top view of the expansion joint; Explanation of reference numerals in the attached drawings: 1. Expansion shaft, 2. Sleeve, 3. Limiting ring, 4. Movable plate, 5. Rotating cylinder, 6. Triangular protrusion, 7. Weight reduction groove, 8. Piston rod, 9. Conical surface, 10. Keyway, 11. Expansion key. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, it should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. Example 1

[0018] This embodiment provides a paper tray tensioning device, including: The tensioning shaft 1 (the working principle of the tensioning shaft 1 is existing technology and will not be described in detail here) is used to tighten the paper core of the paper tray. The tensioning shaft 1 has a sleeve 2. The limiting ring 3 is fixedly sleeved on the outer ring of the right end of the sleeve 2; The movable plate 4 is located on the left side of the sleeve 2, and its left and right movements are arranged accordingly. A rotating cylinder 5 is rotatably mounted on a movable plate 4, and the rotating cylinder 5 is hollow. The driving element is used to drive the movable plate 4 to move left and right.

[0019] The opening of the rotating cylinder 5 faces the sleeve 2, and the inner diameter of the rotating cylinder 5 is slightly larger than the outer diameter of the sleeve 2.

[0020] In this technical solution, when the paper tray is not installed under normal conditions, there is a gap between the rotating cylinder 5 and the tensioning shaft 1, and the rotating cylinder 5 and the tensioning shaft 1 are coaxially arranged.

[0021] When installing the paper tray, the drive element is activated. The drive element can be a telescopic push rod or telescopic bar, etc. The piston rod 8 extends and pushes the movable plate 4 to move away from the limiting ring 3, so that the distance between the rotating cylinder 5 and the limiting ring 3 increases. The paper core part of the cork paper tray is inserted into the expansion shaft 1 through the gap between the rotating cylinder 5 and the expansion shaft 1, so that the paper core part of the paper tray is located on the sleeve 2 of the expansion shaft 1. After the paper tray is inserted into the sleeve 2, one end of the paper core of the paper tray abuts against the limiting ring 3. Then the driving element works in reverse, driving the movable plate 4 and the rotating cylinder 5 to approach the paper tray until the rotating cylinder 5 abuts against the other end of the paper tray, thereby fixing the paper tray between the rotating cylinder 5 and the limiting ring 3. At the same time, the tensioning shaft 1 is activated, so that the tensioning shaft 1 axially tensions the paper core of the paper tray, completing the all-round fixation of the paper core, thereby preventing slippage. A pressure sensor can be installed on the limit ring 3 or the movable plate 4 to prevent excessive clamping force from causing paper core deformation.

[0022] Since the rotating cylinder 5 is mounted on the movable plate 4, when the tensioning shaft 1 rotates and drives the paper tray to rotate, the rotating cylinder 5 can rotate relative to the movable plate 4, reducing rotational resistance and ensuring smooth rotation of the paper tray.

[0023] This structural design achieves stable expansion and tightening of the paper tray without affecting smooth rotation. It fixes both ends and the axial direction of the paper core part of the paper tray, solving the stability problem during the installation and rotation of the paper tray and preventing slippage between the cork paper tray and the expansion shaft 1. Example 2

[0024] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0025] Furthermore, it also includes: Triangular protrusions 6: Several triangular protrusions 6 are circumferentially distributed on the left end face of the limiting ring 3 and the right end face of the rotating cylinder 5.

[0026] In this technical solution, when the rotating cylinder 5 and the limiting ring 3 clamp the paper core part of the paper tray, the triangular protrusion 6 can be embedded into the two end faces of the paper core of the paper tray, increasing the contact area and friction.

[0027] During the rotation of the paper disc with the tensioning shaft 1, these triangular protrusions 6 can effectively prevent relative sliding between the paper disc and the rotating cylinder 5 and the limiting ring 3, ensuring the synchronicity and stability of the paper disc rotation, so that the cork paper can be released evenly and stably.

[0028] Through this structural design, the triangular protrusions 6 increase the stability of the paper tray during rotation, preventing relative slippage between the paper core and the tensioning shaft 1, thereby avoiding the impact of slippage on the cigarette production process. Example 3

[0029] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] Furthermore, it also includes: Weight reduction groove 7: The rotating cylinder 5 has several weight reduction grooves 7 circumferentially arranged, and the weight reduction grooves 7 are connected to the hollow part of the rotating cylinder 5.

[0031] In this technical solution, the weight reduction groove 7 reduces the weight of the rotating cylinder 5, making it easier for the drive element to move the movable plate 4 and the rotating cylinder 5, reducing the load on the drive element, and also improving the response speed of the device, enabling the paper tray to be tightened and loosened more quickly.

[0032] Moreover, the presence of the weight reduction groove 7 does not significantly weaken the structural strength of the rotating cylinder 5, and it can still effectively support and fix the paper tray.

[0033] Through this structural design, the weight reduction groove 7 reduces the load on the drive components and optimizes the operational response performance of the device while ensuring its functionality. Example 4

[0034] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Furthermore, the driving element includes: Piston rod 8, one end of which is connected to the end of movable plate 4 away from rotating cylinder 5.

[0036] In this technical solution, during actual use, a power source is also fixedly installed externally. The power source is a piston cylinder or push rod (not shown in the figure), and the piston rod 8 is the actuating component of the piston cylinder or push rod.

[0037] The piston rod 8 can quickly push or pull the movable plate 4 according to actual needs to achieve the expansion and contraction of the paper tray.

[0038] This structural design can meet the requirement for rapid expansion and tightening of the paper tray during cigarette production. Example 5

[0039] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] Furthermore, the side of the limiting ring 3 facing the rotating cylinder 5 is a conical surface 9.

[0041] In this technical solution, when installing the paper tray, one end of the paper tray gradually slides into the sleeve 2, so that one end of the paper tray abuts against the inclined surface.

[0042] Then, after the rotating cylinder 5 comes into contact with the other end of the paper core, the paper core can self-center by contacting the conical surface 9, so that the paper tray can be accurately positioned on one side of the limiting ring 3.

[0043] This structural design, with the addition of a conical surface 9, optimizes the paper tray installation process, allowing the paper core portion of the paper tray to self-center during the contact between its two ends. Example 6

[0044] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] Furthermore, it also includes: The sleeve 2 has a plurality of keyways 10 circumferentially open, and the expansion shaft 1 has an expansion key 11 located in the keyway 10. The outer surface of the expansion key 11 also has triangular protrusions 6.

[0046] In this technical solution, when the tensioning shaft 1 rotates, the tensioning key 11 transmits torque in the keyway 10, causing the sleeve 2 and the paper tray to rotate together.

[0047] The triangular protrusions 6 on the outer surface of the tension key 11 increase the friction with the inner wall of the paper core, preventing the tension key 11 from sliding relative to the paper core. This further improves the stability and transmission efficiency of the connection between the tension shaft 1 and the paper core, thereby ensuring that the paper tray can rotate stably and reliably with the tension shaft 1.

[0048] Through this structural design, the triangular protrusion of the tension key 11 can also play an anti-slip role during axial expansion, making the anti-slip effect better, ensuring the torque transmission between the tension shaft 1 and the sleeve 2, and improving the rotational stability of the paper tray. Example 7

[0049] This embodiment provides a paper tray tensioning device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] Furthermore, the triangular protrusions 6 on the rotating cylinder 5 and the limiting ring 3 are made of rubber.

[0051] In this technical solution, the triangular protrusions 6 on the rotating cylinder 5 and the limiting ring 3 can be made of rubber.

[0052] The triangular protrusions 6 made of rubber have good elasticity and flexibility. While increasing friction when embedded in the end face of the paper tray, they can avoid causing hard scratches or damage to the paper tray and protect its integrity.

[0053] Furthermore, the rubber material has a certain cushioning effect, which can absorb some vibration and impact during the rotation of the paper tray, making the rotation of the paper tray more stable and reducing problems such as unstable paper feeding caused by vibration.

[0054] This structural design ensures the paper tray is securely fixed while protecting it from damage, thus improving the stability of paper delivery.

[0055] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application specification can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A paper tray tensioning device, characterized in that, Including: An expansion shaft (1) is used to expand the paper core of the paper tray, and the expansion shaft (1) has a sleeve (2). The limiting ring (3) is fixedly sleeved on the outer ring of the right end of the sleeve (2); The movable plate (4) is located on the left side of the sleeve (2). A rotating cylinder (5) is rotatably mounted on a movable plate (4), and the rotating cylinder (5) is hollow. A driving element, which is used to drive the movable plate (4) to move left and right; The opening of the rotating cylinder (5) is positioned facing the sleeve (2), and the inner diameter of the rotating cylinder (5) is slightly larger than the outer diameter of the sleeve (2).

2. The paper tray tensioning device according to claim 1, characterized in that, Also includes: Triangular protrusions (6) are formed circumferentially on the left end face of the limiting ring (3) and the right end face of the rotating cylinder (5).

3. The paper tray tensioning device according to claim 1, characterized in that, Also includes: Weight reduction groove (7): The rotating cylinder (5) has several weight reduction grooves (7) circumferentially arranged, and the weight reduction grooves (7) are hollowly connected to the rotating cylinder (5).

4. A paper tray tensioning device according to claim 3, characterized in that, The driving element includes: The piston rod (8) has one end connected to the end of the movable plate (4) away from the rotating cylinder (5).

5. A paper tray tensioning device according to claim 4, characterized in that: The side of the limiting ring (3) facing the rotating cylinder (5) is a conical surface (9).

6. A paper tray tensioning device according to claim 4 or 5, characterized in that, Also includes: Keyway (10), the sleeve (2) is provided with a plurality of keyways (10) in the circumferential direction, the expansion shaft (1) has an expansion key (11), the expansion key (11) is located in the keyway (10); The outer surface of the expansion key (11) also has triangular protrusions (6).

7. A paper tray tensioning device according to claim 6, characterized in that: The triangular protrusions (6) on the rotating cylinder (5) and the limiting ring (3) are made of rubber.

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