Anti-curl positioning device and packaging machine

Abstract

This application relates to an anti-curling positioning device and a packaging machine. The anti-curling positioning device includes a mounting frame, a rotating roller, and a positioning assembly. By installing a first positioning element and a second positioning element on the rotating roller, the first and second positioning elements form lateral limits on both sides of the aluminum foil, effectively constraining the feeding range of the aluminum foil and preventing axial movement or deviation during feeding, thus improving feeding stability and positioning accuracy. Furthermore, during the rotation of the rotating roller, the first and second positioning elements rotate, causing them to form rolling contact with both sides of the aluminum foil, thereby replacing sliding friction with rolling friction. This prevents the sides of the aluminum foil from being scratched or pulled, effectively eliminating defects such as curling and scratches, and ensuring the surface quality of the aluminum foil. Simultaneously, the low resistance of rolling friction allows the aluminum foil to move smoothly, reducing frictional heat and preventing secondary curling caused by thermal deformation.

Description

Technical Field

[0001] This application relates to the field of packaging equipment technology, and in particular to an anti-rolling positioning device and a packaging machine. Background Technology

[0002] In cigarette packaging manufacturing, aluminum foil liner paper is a core consumable material for the inner packaging of cigarette packs. During the feeding process, the lateral positioning accuracy of the aluminum foil directly determines its alignment with the folded seam of the cigarette pack, while the edge flatness directly affects the pass rate of folding and forming. Both together determine the appearance quality and production yield of the finished cigarette pack. However, during the feeding process, affected by factors such as tension fluctuations and equipment vibration, the aluminum foil is prone to lateral positional shift, which can lead to defects such as side curling or folding, seriously affecting the feeding stability of the aluminum foil and the subsequent packaging quality. Summary of the Invention

[0003] Therefore, it is necessary to provide an anti-rolling positioning device and packaging machine to address the problems of edge curling or folding that easily occur during the feeding process of aluminum foil.

[0004] In a first aspect, this application provides an anti-rolling positioning device, comprising:

[0005] A rotating roller, rotatably configured to rotate in response to the movement of aluminum foil; and

[0006] A positioning assembly is mounted on the rotating roller. The positioning assembly includes a first positioning element and a second positioning element, which are spaced apart along the axial direction of the rotating roller to define a feeding channel for the aluminum foil to pass through. Both the first and second positioning elements are rotatable with the rotating roller so that they respectively form rolling contact with both sides of the aluminum foil.

[0007] In one embodiment, the first positioning member is fixed to the rotating roller, and the second positioning member is movably mounted on the rotating roller. The second positioning member is capable of moving along the axial direction of the rotating roller to adjust the length of the material feeding channel along the axial direction of the rotating roller.

[0008] In one embodiment, the anti-rolling positioning device further includes an adjustment component, which includes a driving member and a moving member. The driving member is connected to the moving member and is used to drive the moving member to move axially along the rotating roller. The second positioning member is connected to the moving member.

[0009] In one embodiment, the anti-rolling positioning device further includes a linkage decoupling component, through which the second positioning member is connected to the moving member. The linkage decoupling component is configured to allow the second positioning member to perform two relative movements simultaneously: circumferentially rotating with the rotating roller about its own axis and reciprocating along the axial direction of the rotating roller with the moving member.

[0010] In one embodiment, the linkage decoupling component includes a bearing, the bearing including an inner ring and an outer ring, the inner ring being fixedly connected to the moving member, the outer ring being rotatably fitted outside the inner ring by rolling elements, and the outer ring being fixedly connected to the second positioning member.

[0011] In one embodiment, the outer periphery of the rotating roller is provided with a through hole that extends along the axial direction of the rotating roller; the linkage decoupling assembly further includes a connector that is connected to the outer ring and the second positioning member, and the connector is movably inserted into the through hole.

[0012] In one embodiment, a plurality of through holes are provided, and the plurality of through holes are arranged at intervals along the circumference of the rotating roller; a plurality of connectors are provided, and the plurality of connectors are arranged at intervals along the circumference of the bearing, and the plurality of connectors are respectively inserted into the plurality of through holes.

[0013] In one embodiment, the anti-rolling positioning device further includes a guide member extending in a direction parallel to the axial direction of the rotating roller, and the moving member having a mating part that is slidably connected to the guide member; and / or, the anti-rolling positioning device further includes a detection member and a control unit, the detection member being used to detect the position information of the aluminum foil paper in the axial direction of the rotating roller; the control unit being communicatively connected to the detection member and the driving member, the control unit being used to receive the position information fed back by the detection member and control the operation of the driving member according to the position information.

[0014] In one embodiment, the first positioning member has a first rounded chamfer on the side facing the second positioning member, and the first rounded chamfer makes rolling contact with one side of the aluminum foil; and / or, the second positioning member has a second rounded chamfer on the side facing the first positioning member, and the second rounded chamfer makes rolling contact with a second side of the aluminum foil.

[0015] Secondly, this application also provides a packaging machine, including the anti-rolling positioning device described in any of the above claims.

[0016] In the aforementioned anti-rolling positioning device and packaging machine, aluminum foil passes through the feeding channel and wraps around the outer circumference of the rotating roller during operation. Due to the friction between the aluminum foil and the outer circumference of the rotating roller, the rotating roller rotates around its own axis through friction transmission as the aluminum foil travels continuously. By installing a first positioning component and a second positioning component on the rotating roller, the first and second positioning components form lateral limits on both sides of the aluminum foil, effectively constraining the feeding range of the aluminum foil and preventing axial movement or deviation during feeding, thus improving feeding stability and positioning accuracy. In addition, during the rotation of the rotating roller, the rotating roller drives the first and second positioning components to rotate, causing the first and second positioning components to form rolling contact with both sides of the aluminum foil, thereby replacing sliding friction with rolling friction, avoiding scratches or snagging on the sides of the aluminum foil, effectively eliminating defects such as curling and scratches, and ensuring the surface quality of the aluminum foil; at the same time, the resistance of rolling friction is small, allowing the aluminum foil to travel smoothly, which helps to reduce frictional heat and avoid secondary curling caused by thermal deformation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the anti-rolling positioning device according to an embodiment of this application.

[0018] Figure 2 for Figure 1 The diagram shows the structure of the rotating roller, positioning component, and adjusting component of the anti-rolling positioning device.

[0019] Figure 3 The diagram shows a partial structural schematic of the anti-rolling positioning device shown in Figure 2.

[0020] Figure 4 for Figure 1 The diagram shows the structure of the second positioning component, the linkage decoupling component, and the adjustment component of the anti-rolling positioning device.

[0021] Figure 5 for Figure 4 The diagram shows the structure of the second positioning component and the linkage decoupling assembly of the anti-rolling positioning device.

[0022] Figure 6 for Figure 1 The diagram shows the structural structure of the pressing component of the anti-rolling positioning device.

[0023] Explanation of icon numbers:

[0024] 10. Mounting bracket; 11. First bracket; 12. Second bracket; 121. Support rod; 20. Rotating roller; 21. Through hole; 30. Positioning assembly; 31. First positioning element; 32. Second positioning element; 40. Detection element; 50. Adjustment assembly; 51. Drive element; 52. Moving element; 523. Mating part; 53. Screw; 60. Linkage decoupling assembly; 61. Bearing; 611. Inner ring; 612. Outer ring; 62. Connecting shaft; 63. Connecting element; 70. Guide element; 80. Pressing assembly; 81. Pressure roller; 82. Fixing frame; 83. Slide; 84. Elastic element. Detailed Implementation

[0025] 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.

[0026] See Figure 1 and Figure 2 An embodiment of this application provides an anti-rolling positioning device, which includes a mounting frame 10, a rotating roller 20, and a positioning component 30.

[0027] See Figure 1 and Figure 2 The mounting frame 10 is provided with a first bracket 11, and the rotating roller 20 is rotatably mounted on the first bracket 11 and can rotate around its own axis.

[0028] See Figure 2 The positioning component 30 is mounted on the rotating roller 20. Specifically, the positioning component 30 includes a first positioning member 31 and a second positioning member 32. Both the first positioning member 31 and the second positioning member 32 are wheel-shaped. The first positioning member 31 and the second positioning member 32 are spaced apart along the axial direction of the rotating roller 20 to define a material feeding channel between the first positioning member 31 and the second positioning member 32. The material feeding channel is used for aluminum foil to pass through.

[0029] It should be noted that the width of the feeding channel is adapted to the width of the aluminum foil. The first positioning member 31 and the second positioning member 32 form a lateral limit on both sides of the aluminum foil, which can effectively constrain the feeding range of the aluminum foil, prevent the aluminum foil from axially shifting or deviating during the feeding process, and improve the feeding stability and positioning accuracy.

[0030] Furthermore, both the first positioning member 31 and the second positioning member 32 can rotate with the rotating roller 20 so that the first positioning member 31 and the second positioning member 32 respectively form rolling contact with both sides of the aluminum foil.

[0031] During operation, the aluminum foil passes through the feeding channel and wraps around the outer circumference of the rotating roller 20. Due to the friction between the aluminum foil and the outer circumference of the rotating roller 20, as the aluminum foil travels continuously, it drives the rotating roller 20 to rotate around its own axis through friction transmission.

[0032] During the rotation of the rotating roller 20, the rotating roller 20 drives the first positioning member 31 and the second positioning member 32 to rotate, so that the first positioning member 31 and the second positioning member 32 respectively form rolling contact with the two sides of the aluminum foil, thereby replacing sliding friction with rolling friction, avoiding the sides of the aluminum foil from being scratched or pulled, effectively eliminating defects such as curling and scratches, and ensuring the surface quality of the aluminum foil; at the same time, the resistance of rolling friction is small, and the aluminum foil can move smoothly, which helps to reduce frictional heat and avoid secondary curling problems caused by thermal deformation.

[0033] In one embodiment, the first positioning member 31 has a first rounded chamfer on the side facing the second positioning member 32, and the first rounded chamfer makes rolling contact with one side of the aluminum foil.

[0034] Furthermore, the radius of the first rounded chamfer is 0.5mm to 2mm. For example, the radius of the first rounded chamfer is 1mm.

[0035] When the first positioning element 31 rotates with the rotating roller 20, the arc-shaped surface of the first rounded chamfer rotates accordingly. Since the arc-shaped surface is a continuous smooth curved surface, the contact point between the side of the aluminum foil and the arc-shaped surface changes continuously along the tangential direction, and the tangential linear velocity of the arc-shaped surface at the contact point matches the movement speed of the side of the aluminum foil. This creates a rolling contact between the side of the aluminum foil and the first rounded chamfer, replacing sliding friction with rolling friction. This avoids the scratching damage to the side of the aluminum foil caused by traditional rigid blocks, reduces material feeding resistance and frictional heat, and prevents the aluminum foil from curling due to thermal deformation.

[0036] Simultaneously, the curved surface of the first rounded chamfer generates normal pressure on the side of the aluminum foil at the contact point. This normal pressure can be decomposed into a radial component pointing inwards towards the aluminum foil. When the aluminum foil undergoes axial movement, this radial component increases accordingly with the increase of the deviation, automatically pushing the aluminum foil back to the reference feeding position, achieving lateral limiting and self-feedback correction. Moreover, the aluminum foil is subjected to uniform force and without impact during the correction process. In addition, the rounded chamfer processing technology is simple, requires no additional parts, and has good economic efficiency and feasibility.

[0037] In one embodiment, the second positioning member 32 has a second rounded chamfer on the side facing the first positioning member 31, and the second rounded chamfer makes rolling contact with the second side of the aluminum foil.

[0038] Furthermore, the radius of the second rounded chamfer is 0.5mm to 2mm. For example, the radius of the second rounded chamfer is 1mm.

[0039] In one embodiment, a first positioning member 31 is fixedly mounted on a rotating roller 20, and a second positioning member 32 is movably mounted on the rotating roller 20. The second positioning member 32 can move along the axial direction of the rotating roller 20 to adjust the distance between the first positioning member 31 and the second positioning member 32.

[0040] During high-speed continuous feeding, when the aluminum foil deviates due to tension fluctuations or external interference, the second positioning component 32 can actively make a slight displacement along the axial direction of the rotating roller 20. Utilizing its rolling contact surface with the side of the aluminum foil, it applies an axial thrust to the foil's trajectory, thereby pushing the deviated foil back to the reference feeding position. In this way, positioning deviations in the aluminum foil during its movement can be effectively corrected, avoiding problems such as side folding or edge curling caused by long-term deviation accumulation.

[0041] Furthermore, since the second positioning element 32 can move axially along the rotating roller 20, when the width of the aluminum foil changes, simply moving the second positioning element 32 axially can quickly adjust the distance between it and the first positioning element 31, making the width of the material feeding channel match the actual width of the aluminum foil. This process requires no replacement of any parts or complex disassembly, improving the equipment's compatibility with different specifications of aluminum foil materials and the ease of switching.

[0042] In one embodiment, see Figure 2 and Figure 3 The anti-rolling positioning device also includes an adjusting component 50. The adjusting component 50 is connected to the second positioning member 32, and the adjusting component 50 is used to drive the second positioning member 32 to move along the axial direction of the rotating roller 20. By setting the adjusting component 50, the adjusting component 50 can automatically adjust the distance between the first positioning member 31 and the second positioning member 32.

[0043] Further, see Figure 3 The adjustment assembly 50 includes a drive component 51 and a moving component 52. The drive component 51 is mounted on the first bracket 11 and is connected to the moving component 52, which is connected to the second positioning component 32. The drive component 51 drives the moving component 52 to move axially along the rotating roller 20, and the moving component 52 drives the second positioning component 32 to move axially along the rotating roller 20.

[0044] For example, the driving component 51 is a motor, and the output shaft of the motor is connected to a screw 53. The moving component 52 is a nut, and the nut is threadedly connected to the screw 53. The screw 53 and the nut form a precision lead screw transmission structure, which can accurately convert the rotational motion of the motor into the axial linear motion of the nut. It can precisely control the displacement and adjustment speed of the axial adjustment, and complete the electric adjustment of the position without manually tightening the locking structure, realizing online position adjustment without stopping the machine during operation; at the same time, the adjustment accuracy is high and the response speed is fast, which is fully adapted to the real-time position adjustment requirements of high-speed packaging machines.

[0045] Of course, in other embodiments, the drive component 51 may also be a pneumatic or hydraulic cylinder, and the moving component 52 may be mounted on the piston rod.

[0046] In one embodiment, the anti-rolling positioning device further includes a detection element 40 and a control unit.

[0047] See Figure 1 The detection element 40 is installed on the first bracket 11 and is used to detect the position information of the aluminum foil paper in the axial direction of the rotating roller 20.

[0048] For example, the detection element 40 is a displacement sensor, with the detection end of the displacement sensor aligned with the side edge of the aluminum foil, for continuously collecting lateral position data of the aluminum foil.

[0049] Of course, in other embodiments, the detection element 40 can also be an image acquisition device, which acquires images of aluminum foil in the material feeding channel and determines whether there is a positional deviation of the aluminum foil based on the images.

[0050] The control unit is communicatively connected to the detection element 40 and the drive element 51. The control unit is used to receive the position information fed back by the detection element 40 and control the drive element 51 to run according to the position information.

[0051] During operation, the aluminum foil passes through the feeding channel and wraps around the outer circumference of the rotating roller 20. Due to the friction between the aluminum foil and the outer circumference of the rotating roller 20, as the aluminum foil travels continuously, the rotating roller 20, the first positioning element 31, and the second positioning element 32 are driven to rotate around their own axes through friction transmission. During this process, the detection element 40 continuously detects the lateral position of the side edge of the aluminum foil and feeds back the detected real-time position signal to the control unit.

[0052] When the aluminum foil shifts laterally due to tension fluctuations or equipment vibration, the detection element 40 compares its real-time position with the preset reference feeding position, generates a position deviation signal, and sends it to the control unit. Based on the received deviation, the control unit sends a control command to the drive element 51. The drive element 51 starts and moves the moving element 52 along the axial direction of the rotating roller 20, which in turn moves the second positioning element 32 along the axial direction of the rotating roller 20. At this time, since the first positioning element 31 is fixed to the reference side, the second positioning element 32 pushes the corresponding side of the aluminum foil in the opposite direction of the deviation. Utilizing the rolling contact between the second positioning element 32 and the side of the aluminum foil, the misaligned aluminum foil is gradually pushed back to the preset reference feeding position. When the detection element 40 detects that the side of the aluminum foil has returned to the reference feeding position, the control unit sends a stop command to the drive element 51. The second positioning element 32 remains in its current position, continuously guiding and limiting the aluminum foil, forming a complete closed-loop automatic positioning control.

[0053] When it is necessary to change to aluminum foil paper of different widths, the control unit automatically calculates the target distance required between the first positioning member 31 and the second positioning member 32 according to the preset new width parameters, and sends a corresponding command to the adjustment component 50 to drive the second positioning member 32 to move to the target position, thereby completing the rapid adaptation of the channel width.

[0054] Throughout the entire calibration or gauge change process, the rotating roller 20 operates continuously, ensuring a constant feed of the aluminum foil without requiring machine intervention. Simultaneously, because the first positioning element 31 and the second positioning element 32 rotate synchronously with the rotating roller 20, they maintain rolling contact with both sides of the aluminum foil, preventing scratching and snagging of the foil sides due to sliding friction.

[0055] In one embodiment, see Figure 4 The anti-rolling positioning device also includes a linkage decoupling component 60. The second positioning member 32 is connected to the moving member 52 through the linkage decoupling component 60. The linkage decoupling component 60 is configured to allow the second positioning member 32 to perform two relative movements simultaneously: rotating synchronously with the rotating roller 20 around its own axis; and reciprocating along the axial direction of the rotating roller 20 with the moving member 52.

[0056] During operation, the aluminum foil passes through the feeding channel and wraps around the surface of the rotating roller 20, causing the rotating roller 20 to rotate around its own axis. The rotating roller 20 drives the second positioning member 32 to rotate synchronously through the circumferential transmission pair of the linkage decoupling component 60, so that the second positioning member 32 maintains rolling contact with the second side of the aluminum foil, while the first positioning member 31 maintains rolling contact with the side edge of the aluminum foil.

[0057] During this process, the detection element 40 continuously collects the lateral position signal of the aluminum foil side and feeds it back to the control unit. When the aluminum foil axially deviates or needs to be changed in width specification, the control unit sends a control command to the drive element 51 according to the deviation signal or preset parameters. The drive element 51 drives the moving element 52 to move axially along the rotating roller 20. The moving element 52 transmits the axial thrust to the second positioning element 32 through the axial sliding pair of the linkage decoupling component 60, driving the second positioning element 32 to move axially along the rotating roller 20 to the target position.

[0058] Throughout the adjustment process, because the linkage decoupling component 60 completely decouples the circumferential transmission path from the axial adjustment path, the axial movement of the second positioning component 32 neither depends on the stopping of the rotating roller 20 nor interferes with the normal circumferential rotation of the rotating roller 20. Simultaneously, the second positioning component 32 maintains circumferential synchronization with the rotating roller 20 during axial movement, ensuring constant rolling contact with the side edge of the aluminum foil. Thus, the anti-rolling positioning device of this embodiment can achieve high-precision online positioning adjustment without stopping the machine, without damaging the material.

[0059] In one embodiment, see Figure 4 and Figure 5 The linkage decoupling component 60 includes a connecting shaft 62 and a bearing 61.

[0060] See Figure 5 The connecting shaft 62 is fixed to one end of the moving part 52 near the second positioning part 32, and the connecting shaft 62 extends along the axial direction of the rotating roller 20.

[0061] The bearing 61 includes an inner ring 611 and an outer ring 612, with the outer ring 612 rotatably fitted over the inner ring 611 via rolling elements. The inner ring 611 is fitted onto the connecting shaft 62, and the outer ring 612 is fixedly connected to the second positioning member 32.

[0062] During operation, the aluminum foil passes through the feeding channel and wraps around the surface of the rotating roller 20, causing the rotating roller 20 to rotate synchronously. The rotating roller 20 drives the second positioning member 32 to rotate circumferentially, and the second positioning member 32 drives the outer ring 612 of the bearing 61 fixedly connected to it to rotate. The outer ring 612 of the bearing 61 rotates relative to the inner ring 611 of the bearing 61 through the rolling elements.

[0063] When it is necessary to adjust the distance between the first positioning member 31 and the second positioning member 32, the driving member 51 of the adjusting assembly 50 drives the moving member 52 to move axially along the rotating roller 20. The moving member 52 drives the connecting shaft 62 and the inner ring 611 of the bearing 61 to move axially synchronously. The inner ring 611 of the bearing 61 moves axially while remaining stationary in the circumferential direction, and transmits the axial thrust to the outer ring 612 of the bearing 61 through the rolling elements, thereby driving the second positioning member 32 to move axially to the target position.

[0064] Thus, circumferential rotation is transmitted from the rotating roller 20 to the outer ring 612 of the bearing 61 via the second positioning element 32, while axial adjustment is transmitted from the driving element 51 to the outer ring 612 of the bearing 61 and the second positioning element 32 via the moving element 52, the connecting shaft 62, the inner ring 611 of the bearing 61, and the rolling elements. The two motion paths intersect at the bearing 61, achieving complete decoupling through the rolling relationship between the inner ring 611 and the outer ring 612. The outer ring 612 rotates circumferentially with the second positioning element 32, while the inner ring 611 remains stationary in the circumferential direction and moves axially, without interfering with each other. This structure can stably transmit axial positioning thrust while completely isolating the circumferential rotation of the rotating roller 20, ensuring that the positioning adjustment process does not interfere with the normal feeding rotation of the aluminum foil paper, providing a reliable structural basis for online correction and specification switching without stopping the machine.

[0065] Optionally, the bearing 61 is a deep groove ball bearing 61 or an angular contact ball bearing 61, so as to simultaneously bear axial load and circumferential load.

[0066] In one embodiment, see Figure 2 The outer periphery of the rotating roller 20 is provided with a through hole 21, which extends along the axial direction of the rotating roller 20.

[0067] Further, see Figure 3 and Figure 4 The linkage decoupling component 60 also includes a connector 63. The connector 63 is connected to the outer ring 612 and the second positioning component 32, and the connector 63 is movably inserted into the through hole 21.

[0068] It should be noted that the connector 63 can rotate synchronously with the rotating roller 20 and can also move freely along the axial direction of the rotating roller 20.

[0069] During operation, the aluminum foil passes through the feeding channel and wraps around the surface of the rotating roller 20. Due to the friction between the aluminum foil and the surface of the rotating roller 20, as the aluminum foil travels continuously, it drives the rotating roller 20 to rotate around its own axis through friction transmission.

[0070] When the rotating roller 20 rotates, the wall of the through hole 21 on its outer circumference rotates synchronously with the rotating roller 20. Since the connecting member 63 passes through the through hole 21 and is constrained circumferentially by the wall of the through hole 21, the wall of the through hole 21 pushes the connecting member 63 to rotate synchronously with the rotating roller 20 through contact. The connecting member 63 then drives the outer ring 612 of the bearing 61 and the second positioning member 32, which are fixedly connected to it, to rotate synchronously.

[0071] When the driving member 51 drives the moving member 52 to move along the axial direction of the rotating roller 20, the connecting member 63 slides freely in the through hole 21 along the axial direction of the rotating roller 20, and transmits the axial thrust to the second positioning member 32 through the outer ring 612 of the bearing 61, driving the second positioning member 32 to move along the axial direction of the rotating roller 20 to the target position.

[0072] A through hole 21 is provided on the outer periphery of the rotating roller 20, and the second positioning member 32 is fixedly connected to the outer ring 612 of the bearing 61 through a connector 63 passing through the through hole 21. Thus, the circumferential constraint of the connecting member 63 by the hole wall of the through hole 21 enables the rigid direct drive of the rotating roller 20 to the second positioning member 32. The axial free sliding of the connecting member 63 within the through hole 21 provides a smooth movement channel for the axial adjustment of the adjusting assembly 50, allowing the circumferential drive and axial adjustment to be completed in the same mating pair without interfering with each other. At the same time, since the circumferential rotation is transmitted to the outer ring 612 of the bearing 61 through the hole wall of the through hole 21, the connecting member 63, and the second positioning member 32, and then rotates relative to the inner ring 611 of the bearing 61 through the rolling elements, while the inner ring 611 of the bearing 61 and the connecting shaft 62 and the moving member 52 fixedly connected to it remain stationary in the circumferential direction, the circumferential rotation of the rotating roller 20 is completely isolated from one side of the outer ring 612 of the bearing 61, so that the adjusting assembly 50 does not have to bear torsional loads and avoids problems such as cable entanglement and seal wear.

[0073] In one embodiment, see Figure 3 Multiple through holes 21 are provided, and the multiple through holes 21 are arranged at intervals along the circumference of the rotating roller 20. (See reference...) Figure 5 Multiple connectors 63 are provided, and the multiple connectors 63 are arranged at intervals along the circumference of the bearing 61, and the multiple connectors 63 are correspondingly inserted into the multiple through holes 21.

[0074] With the above configuration, the circumferential driving force of the rotating roller 20 acts simultaneously on the corresponding multiple connecting parts 63 through the hole walls of multiple through holes 21, so that the second positioning part 32 and the outer ring 612 of the bearing 61 simultaneously obtain driving force at multiple force points in the circumferential direction. Compared with the single-point driving method, the multi-point evenly distributed driving effectively avoids the generation of eccentric torque, eliminates the risk of tilting or jamming of the second positioning part 32 due to unilateral force, and improves the stability and synchronization accuracy of the circumferential transmission.

[0075] Meanwhile, multiple connecting parts 63 are arranged at intervals along the circumference, so that the connection stiffness between the outer ring 612 of the bearing 61 and the second positioning part 32 is evenly distributed in the circumference. Even under high speed and high tension conditions, the roundness of the outer ring 612 of the bearing 61 is better maintained, the rolling elements are subjected to uniform force, and early wear of the rolling elements or deformation of the cage caused by local load concentration is avoided, effectively extending the service life of the bearing 61.

[0076] In one embodiment, see Figure 3 and Figure 4 The anti-rolling positioning device also includes a guide member 70. The guide member 70 is mounted on the first bracket 11 and is parallel to the axial direction of the rotating roller 20. The moving member 52 is provided with a mating part 523, which is slidably connected to the guide member 70. By setting the guide member 70, under the constraint of the guide member 70, the mating part 523 slides along the axial direction of the guide member 70, restricting the moving member 52 from rotating circumferentially with the screw 53, and only allowing it to move linearly back and forth along the axial direction of the screw 53. This accurately converts the rotational motion of the driving member 51 into axial linear thrust, thereby improving the stability and accuracy of the position adjustment, preventing jamming and skew during the adjustment process, and ensuring long-term stable and reliable positioning.

[0077] Optionally, one of the guide member 70 and the mating part 523 is a guide rod and the other is a U-shaped plate, with the guide rod movably provided in the groove formed by the U-shaped plate.

[0078] It should be noted that the number and position of the guide member 70 and the mating part 523 can be set according to actual needs. For example, see [reference needed]. Figure 3 and Figure 4 There are two guide members 70, one of which is located above the rotating roller 20 and the other is located below the rotating roller 20; there are two mating parts 523, one of which is located at the top of the moving member 52 and the other is located at the bottom of the moving member 52, and the two mating parts 523 are slidably mated to the two guide members 70 in a one-to-one correspondence.

[0079] In one embodiment, see Figure 1 The anti-rolling positioning device also includes a pressing assembly 80. The pressing assembly 80 includes a pressure roller 81, which is located between the first positioning member 31 and the second positioning member 32. The pressure roller 81 is used to press the aluminum foil against the outer periphery of the rotating roller 20.

[0080] It should be noted that the axial width of the pressure roller 81 covers both sides of the aluminum foil. For example, the roller surface of the pressure roller 81 covers 5mm to 8mm on each side of the aluminum foil.

[0081] Specifically, the mounting bracket 10 is further provided with a second bracket 12, which is located on one side of the first bracket 11. The second bracket 12 is provided with a support rod 121, the length direction of which is parallel to the axial direction of the rotating roller 20, and the pressing assembly 80 is mounted on the support rod 121.

[0082] During operation, the aluminum foil passes through the feeding channel and wraps around the surface of the rotating roller 20, driving the rotating roller 20 to rotate synchronously around its own axis through friction transmission. At the same time, the pressure roller 81 presses against the aluminum foil on the outer circumference of the rotating roller 20.

[0083] Thus, the pressure roller 81 presses the aluminum foil onto the outer circumference of the rotating roller 20, increasing the contact wrap angle and positive pressure between the aluminum foil and the rotating roller 20, thereby improving the reliability and synchronization of the friction transmission and preventing the aluminum foil from slipping relative to the surface of the rotating roller 20 during high-speed feeding. At the same time, the rolling action of the pressure roller 81 on the surface of the aluminum foil suppresses the side lifting and shifting of the aluminum foil during high-speed feeding and position adjustment, forming a double anti-rolling edge protection in conjunction with the positioning component 30.

[0084] Optionally, the roller surface of the pressure roller 81 is made of flexible polyurethane. The pressure roller 81 contacts the aluminum foil through the flexible polyurethane roller surface. The polyurethane material has a certain degree of elastic deformation capability, which can adapt to the microscopic unevenness of the aluminum foil surface, making the pressing force distribution more uniform and avoiding local stress concentration that could lead to wrinkles or deformation. In addition, the polyurethane material has good wear resistance and resilience, making it less prone to wear or deformation during long-term use, and can effectively absorb the impact vibration during the feeding process, improving the stability of the feeding process.

[0085] In one embodiment, see Figure 6 The pressure roller 81 can move towards or away from the rotating roller 20. This arrangement allows the pressure roller 81 to adaptively adjust its position according to the thickness of the aluminum foil and the feeding status.

[0086] Specifically, the pressing assembly 80 also includes a fixing frame 82 and a slide 83. The fixing frame 82 is mounted on the support rod 121, the slide 83 is movably mounted on the fixing frame 82, and the pressure roller 81 is mounted on the slide 83.

[0087] In one embodiment, see Figure 1 and Figure 6 The pressing assembly 80 also includes an elastic element 84. The elastic element 84 is disposed between the support rod 121 and the pressure roller 81, and is used to provide elastic pressure to the pressure roller 81 in the direction of the aluminum foil. Optionally, one end of the elastic element 84 is connected to the fixing frame 82 and the other end is connected to the slide 83; or, one end of the elastic element 84 is connected to the support rod 121 and the other end is connected to the pressure roller 81.

[0088] For example, the elastic element 84 is a spring. Of course, in other embodiments, the elastic element 84 may also be a rubber component or other elastic member, and is not limited thereto.

[0089] By incorporating an elastic element 84, which continuously applies elastic pressure to the pressure roller 81, the pressure roller 81 is elastically pressed against the surface of the aluminum foil with a preset clamping force, suppressing the side lifting and shifting of the aluminum foil during high-speed feeding and position adjustment. In this way, while ensuring compatibility with aluminum foil of different thicknesses, the elastic floating mechanism buffers and absorbs tension fluctuations and joint impacts, and the continuous clamping improves the reliability of friction transmission between the aluminum foil and the rotating roller 20, suppressing slippage and vibration, and keeping the aluminum foil flat and adhered to the surface of the rotating roller 20.

[0090] For example, the fixing frame 82 has a U-shaped structure. Two slide blocks 83 are provided, each mounted at one end of the axial direction of the pressure roller 81, and slidably connected to both sides of the fixing frame 82. Two elastic elements 84 are provided, each corresponding to one side of the axial direction of the pressure roller 81. This allows for a continuous and uniform pressing force to be applied to both sides of the aluminum foil, further improving the anti-curling edge protection effect.

[0091] In summary, the anti-rolling positioning device of this embodiment has the following effects:

[0092] (1) Online closed-loop positioning improves production efficiency

[0093] The system adopts adjustment component 50 and detection component 40 to form a closed-loop control system, which can automatically complete the dynamic correction of the horizontal position of aluminum foil paper when the equipment is running at high speed. It can also complete the changeover adjustment of different width specifications with one click without stopping the machine for manual operation, which greatly shortens the adjustment and changeover time, improves the effective utilization rate of the equipment, and is fully adapted to the high-speed and multi-specification production mode.

[0094] (2) Double anti-rolling design

[0095] By setting up a dual anti-rolling mechanism with positioning component 30 and pressing component 80, the first positioning component 31 and the second positioning component 32 roll into contact with both sides of the aluminum foil paper, respectively, without sliding or scratching; the pressing component 80 provides full-area elastic pressing of both sides of the aluminum foil paper, suppressing curling. In this way, the causes of curling and scratching during high-speed feeding, positioning offset, and adjustment can be eliminated, reducing the scrap rate of aluminum foil paper and improving the appearance quality of the finished cigarette pack.

[0096] (3) Rotation and adjustment are completely decoupled, ensuring smooth and reliable operation.

[0097] By setting the linkage decoupling component 60, the circumferential material transmission and axial positioning adjustment of the rotating roller 20 are completely decoupled. The adjustment action does not interfere with the normal conveying of aluminum foil, and there is no jamming or material disturbance. It avoids tension fluctuations and edge wrinkles caused by adjustment, and can be adapted to high-speed continuous operation conditions. It has strong long-term operation stability.

[0098] (4) High-precision guidance constraint

[0099] By setting the guide component 70, the guide component 70 provides a stable linear constraint for the axial adjustment of the second positioning component 32, avoiding circumferential deflection of the nut. With the help of the precision ball screw, the positioning adjustment accuracy can be achieved at the ±0.02mm level, effectively ensuring the alignment of the aluminum foil folding joint and improving the quality consistency of the finished cigarette pack.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] The embodiments described above are merely illustrative of 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 positioning device for preventing edge curling, characterized in that, include: A rotating roller, which is rotatably configured to rotate under the influence of aluminum foil; as well as A positioning assembly is mounted on the rotating roller. The positioning assembly includes a first positioning element and a second positioning element, which are spaced apart along the axial direction of the rotating roller to define a feeding channel for the aluminum foil to pass through. Both the first and second positioning elements are rotatable with the rotating roller so that they respectively form rolling contact with both sides of the aluminum foil.

2. The anti-rolling positioning device according to claim 1, characterized in that, The first positioning member is fixed to the rotating roller, and the second positioning member is movably mounted on the rotating roller. The second positioning member can move along the axial direction of the rotating roller to adjust the length of the material feeding channel along the axial direction of the rotating roller.

3. The anti-rolling positioning device according to claim 2, characterized in that, The anti-rolling positioning device further includes an adjustment component, which includes a driving component and a moving component. The driving component is connected to the moving component and is used to drive the moving component to move along the axial direction of the rotating roller. The second positioning component is connected to the moving component.

4. The anti-rolling positioning device according to claim 3, characterized in that, The anti-rolling positioning device further includes a linkage decoupling component. The second positioning member is connected to the moving member through the linkage decoupling component. The linkage decoupling component is configured to allow the second positioning member to perform two relative movements simultaneously: circumferentially rotating with the rotating roller around its own axis and reciprocating along the axial direction of the rotating roller with the moving member.

5. The anti-rolling positioning device according to claim 4, characterized in that, The linkage decoupling component includes a bearing, which includes an inner ring and an outer ring. The inner ring is fixedly connected to the moving part, and the outer ring is rotatably fitted outside the inner ring by a rolling element. The outer ring is fixedly connected to the second positioning part.

6. The anti-rolling positioning device according to claim 5, characterized in that, The outer periphery of the rotating roller is provided with a through hole, which extends along the axial direction of the rotating roller; the linkage decoupling assembly also includes a connector, which is connected to the outer ring and the second positioning member, and the connector is movably inserted into the through hole.

7. The anti-rolling positioning device according to claim 6, characterized in that, The through holes are provided in multiple ways, and the multiple through holes are arranged at intervals along the circumference of the rotating roller; The connector is provided in multiple ways, and the multiple connectors are arranged at intervals along the circumference of the bearing, and the multiple connectors are respectively inserted into the multiple through holes.

8. The anti-rolling positioning device according to claim 3, characterized in that, The anti-rolling positioning device further includes a guide member, which extends in a direction parallel to the axial direction of the rotating roller. The moving member is provided with a mating part, which is slidably connected to the guide member. And / or, the anti-rolling positioning device further includes a detection element and a control unit. The detection element is used to detect the position information of the aluminum foil paper in the axial direction of the rotating roller. The control unit is communicatively connected to the detection element and the drive element. The control unit is used to receive the position information fed back by the detection element and control the operation of the drive element according to the position information.

9. The anti-rolling positioning device according to any one of claims 1 to 8, characterized in that, The first positioning member has a first rounded chamfer on the side facing the second positioning member, and the first rounded chamfer makes rolling contact with one side of the aluminum foil. And / or, the second positioning member has a second rounded chamfer on the side facing the first positioning member, and the second rounded chamfer makes rolling contact with the second side of the aluminum foil.

10. A packaging machine, characterized in that, Includes the anti-rolling positioning device as described in any one of claims 1 to 9.

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