A pay-off roll
By using a motor-driven rotating ring and a mechanical limiting structure, automatic tension adjustment and emergency stop of the unwinding roller are achieved, solving the problem of the inability to automatically adjust and stop quickly in existing technologies, and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青岛万沅金属制品有限公司
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing unwinding rollers cannot achieve automatic tension adjustment, which makes it easy for materials to become loose or wrinkled during unwinding, and they cannot be stopped quickly in emergency situations.
It adopts a motor-driven rotating ring and a mechanical limiting structure. The rotation of the rotating ring pushes the sliding plate to achieve automatic tension adjustment, and in an emergency, it can quickly stop by using inertia and the mechanical limiting structure.
It achieves automated tension adjustment to adapt to changes in roll diameter, preventing material loosening or wrinkling, and also enables rapid braking in emergency situations to ensure equipment safety.
Smart Images
Figure CN224530138U_ABST
Abstract
Description
Technical Field
[0001] This application relates to roll film packaging equipment, and more particularly to an unwinding roller. Background Technology
[0002] Unwinding rollers can smoothly unwind and transport rolled strips or sheets of materials such as paper and film to subsequent processing stages. They are used in many industries such as packaging and printing, and metal processing. They are key industrial production components with advantages such as continuous material conveying, stable tension control, easy automation integration, adaptability to multiple specifications of materials, and reduced material loss.
[0003] A search revealed Chinese Patent Publication No. CN217616922U, which discloses an adjustable unwinding roller. The roller includes an unwinding frame, an unwinding roller rotatably connected to the frame, and a thread-matching screw rotatably connected to the unwinding roller. Two limiting blocks are positioned on the unwinding roller corresponding to the thread-matching screw, and each limiting block is threadedly connected to one of the threaded portions of the screw. An unwinding plate, capable of abutting against the unwinding drum, is located outside the unwinding roller, and a support rod is positioned between the unwinding plate and the limiting blocks. This application is adaptable to unwinding drums of different sizes.
[0004] The aforementioned patent specification mentions the beneficial effects of "rotating the thread-matching screw to move the two limiting blocks in a direction that tends to move away from or towards each other; changing the distance between the unwinding plate and the unwinding roller via the support rod, allowing the unwinding plate to abut against the inner circumferential surface of the unwinding drum, for fixing unwinding drums of different sizes, and for fixing unwinding drums of different sizes during the unwinding process." While the aforementioned patent can fix unwinding drums of different sizes, it cannot achieve automatic adjustment. Therefore, an unwinding roller is proposed to solve the above problem. Utility Model Content
[0005] The purpose of this application is to provide an unwinding roller that aims to improve the problem of the inability to automatically adjust tension.
[0006] The unwinding roller provided in this application adopts the following technical solution: it includes a base plate, a support mechanism is fixedly connected to the top of the base plate, an adjustment mechanism is fixedly connected to the outside of the support mechanism, a motor is fixedly connected to the top of the support mechanism, and an emergency stop mechanism is fixedly connected to the drive end of the motor. The adjustment mechanism includes a fixed plate, the inner side of which is fixedly connected to the outer side of the support mechanism. A rotating ring is rotatably connected to the outer side of the fixed plate. An extrusion groove is formed inside the rotating ring, and a sliding component is slidably connected inside the extrusion groove. Through the above technical solution: after the support mechanism at the top of the base plate is fixed, the inner side of the fixed plate in the outer adjustment mechanism is connected to the support mechanism, and the outer rotating ring can rotate around it. After the motor is started, the power is transmitted through the support mechanism, which drives the rotating ring to rotate. The internal extrusion groove rotates accordingly, generating radial thrust on the sliding component in the groove, causing the sliding component to slide along the extrusion groove to achieve the adjustment function. At the same time, the emergency stop mechanism at the motor drive end, when the motor is turned off, uses inertia and mechanical limit structure to make the rotating ring stop rotating quickly, ensuring equipment safety.
[0007] Preferably, the sliding assembly includes a sliding plate, the outer side of which is slidably connected to the inside of the rotating ring, and the outer side of which is fixedly connected to the sliding ring; By adopting the above technical solution, when the rotating ring rotates, the extrusion groove pushes the sliding plate to slide inside it, and the sliding plate drives the outer sliding ring to move radially, thereby achieving support or tension adjustment of the roll material. This structure converts the rotational motion of the rotating ring into the radial displacement of the sliding ring through mechanical transmission, meeting the needs for fixing or adjusting the tension of the roll material under different working conditions.
[0008] Preferably, the support mechanism includes a bracket, the bottom of which is fixedly connected to the top of the base plate, and a support platform is fixedly connected to the outside of the bracket; By adopting the above technical solution, the bracket at the top of the base plate serves as the core of the support mechanism, and the bottom is fixed to the base plate to form a stable base. The outer support platform is used to install the motor and adjustment mechanism. The bracket ensures the coaxiality of each component through rigid connection, so that the motor power is transmitted to the rotating ring through the support platform and remains stable, avoiding the radial adjustment accuracy of the sliding component from being affected by the support shaking.
[0009] Preferably, the emergency stop mechanism includes a rotating disk, the outer side of which is fixedly connected to the drive end of the motor, three fixed rods are fixedly connected to the inner side of the rotating disk, a driving disk is rotatably connected to the inner side of the rotating disk, and three sliding grooves are opened inside the driving disk, with anti-collision blocks fixedly connected inside the sliding grooves. By adopting the above technical solution, when the motor drives the rotating disk to rotate, the fixed rod rotates with it and slides in the sliding groove of the driving disk, causing the driving disk to rotate synchronously. After the motor is turned off, the rotating disk stops rotating, and the driving disk continues to rotate due to inertia until the fixed rod slides to the anti-collision block in the sliding groove and is blocked, forcing the driving disk and rotating ring to stop urgently, thus realizing mechanical hard limit braking.
[0010] Preferably, a rotating column is fixedly connected to the outer side of the drive disc, and the outer side of the rotating column is engaged with the inner side of the rotating ring. By adopting the above technical solution, the rotating column on the outer side of the drive disc rotates synchronously with the drive disc. Its outer teeth mesh with the inner teeth of the rotating ring, transmitting the rotational power of the drive disc to the rotating ring, causing the rotating disc to rotate around the fixed disc. In turn, the internal extrusion groove pushes the sliding component to move radially, realizing the function of expanding or adjusting the tension of the sliding ring.
[0011] Preferably, the outer side of the fixing rod is slidably connected to the inside of the sliding groove, and the outer side of the fixing rod is slidably connected to the outside of the anti-collision block; By adopting the above technical solution, the fixed rod slides in the sliding groove of the drive plate when the rotating plate rotates, causing the drive plate to rotate. In case of emergency stop, the rotating plate stops rotating, and the fixed rod continues to slide to the outside of the anti-collision block due to the inertia of the drive plate. After being blocked by the anti-collision block, it abuts against the drive plate. Through mechanical limiting, the rotating column and rotating ring stop rotating quickly, realizing emergency braking.
[0012] Preferably, the fixed disk has multiple grooves inside, and the outer side of the sliding plate is slidably connected to the inside of the extrusion groove; By adopting the above technical solution, when the rotating ring rotates, its internal extrusion groove drives the sliding plate to slide within the groove. The sliding groove of the fixed plate provides a guide path for the sliding plate, ensuring that the sliding plate can only move radially. When the sliding plate slides, it drives the outer sliding ring to move synchronously, thereby realizing the tensioning or loosening adjustment of the roll material and ensuring the stability of the unwinding process. Preferably, the outer side of the rotating column is rotatably connected to the inside of the bracket, and the outer side of the driving disc is rotatably connected to the outside of the bracket; By adopting the above technical solution, the bracket provides support and rotational constraint for the rotating column and the drive disc. The rotating column rotates inside the bracket on the outside, while the drive disc rotates on the outside of the bracket. When driven by the motor, the drive disc rotates and transmits power to the rotating ring through the rotating column. The bracket ensures that the two rotate stably, maintains the coaxiality of the transmission structure, and avoids motion interference.
[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, a rotating column drives a rotating ring, which in turn drives a sliding plate through an extrusion groove. The sliding plate then drives the sliding ring, thereby achieving automatic tension adjustment. This allows for dynamic adaptation to changes in the roll diameter to maintain stable tension, preventing issues such as slack or wrinkles during unwinding and reducing equipment vibration. Automated adjustment can be achieved without manual intervention, improving production efficiency and reducing labor costs and operational error risks.
[0014] 2. In this utility model, the rotating disc works in conjunction with the fixed rod, the fixed rod works in conjunction with the driving disc and the sliding groove, and the sliding groove works in conjunction with the anti-collision block, thereby achieving the effect of emergency stopping of the rotating roller. Rapid braking is achieved by means of mechanical hard limit. When the power source is turned off, the fixed rod slides with the inertia of the driving disc to the anti-collision block to form a physical block. It can quickly lock the rotating roller in emergency situations such as equipment failure and material jamming. Moreover, the purely mechanical structure is independent of electrical components, so even if there is an electrical control failure, reliable braking can be ensured. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of an unwinding roller proposed in this utility model; Figure 2 This is a schematic diagram of a support platform for an unwinding roller according to the present invention. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Support mechanism; 21. Bracket; 22. Support platform; 3. Adjustment mechanism; 31. Fixed plate; 32. Slide groove; 33. Rotating ring; 34. Extrusion groove; 35. Sliding assembly; 351. Sliding plate; 352. Sliding ring; 36. Rotating column; 4. Emergency stop mechanism; 41. Rotating plate; 42. Fixed rod; 43. Drive plate; 44. Sliding groove; 45. Anti-collision block; 5. Motor. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.
[0017] Example: An unwinding roller, as shown in the figure Figures 1 to 3 The device includes a base plate 1, which serves as a foundation component to provide stable support for the entire device and ensure the smooth operation of the upper mechanism. A support mechanism 2 is fixedly connected to the top of the base plate 1. The support mechanism 2 is vertically set to support the components and ensure the coaxiality and vertical accuracy of each component during installation. An adjustment mechanism 3 is fixedly connected to the outside of the support mechanism 2. The adjustment mechanism 3 can expand or contract the parts outward through internal transmission to adapt to different inner diameter rolls and maintain stable unwinding tension. A motor 5 is fixedly connected to the top of the support mechanism 2. After the motor 5 is started, it provides power to the components through the drive end, and the components operate in coordination. An emergency stop mechanism 4 is fixedly connected to the drive end of the motor 5. It uses the mechanical limit of the inertia of the parts to quickly stop the rotation of the parts and avoid safety hazards caused by the inertial operation of the equipment. Specifically, the device is based on a base plate 1, which provides stable support for the entire device and ensures smooth operation. The support mechanism 2 fixed on the base plate 1 carries all components and ensures installation accuracy and vertical stability. The adjustment mechanism 3 on the outside of the support mechanism 2 expands or contracts the parts through internal transmission, adapts to different roll materials, and maintains unwinding tension. The motor 5 at the top of the support mechanism 2 serves as a power source, driving the components to operate in coordination. The emergency stop mechanism 4 connected to the drive end of the motor 5 can quickly brake the parts by utilizing the inertia of the parts and mechanical limits, eliminating safety hazards caused by inertial operation of the equipment and ensuring safe operation.
[0018] The adjustment mechanism 3 includes a fixed plate 31, which is the basic component of the adjustment mechanism 3. The fixed plate 31 has multiple sliding grooves 32 inside, which provide guidance for the radial sliding of the component and ensure the stability of the sliding trajectory. The inner side of the fixed plate 31 is fixedly connected to the outer side of the support mechanism 2. The rigid connection makes the fixed plate 31 and the support mechanism 2 form a stable whole, ensuring the coaxiality during power transmission. The outer side of the fixed plate 31 is rotatably connected to a rotating ring 33, which can rotate around the fixed plate 31. It receives power through meshing with the component and converts it into its own rotation. The rotating ring 33 has a pressing groove 34 inside. When the rotating ring 33 rotates, the pressing groove 34 presses the sliding component 35 through the inclined structure, converting the rotational motion into linear motion. The sliding component 35 is slidably connected inside the pressing groove 34. The sliding component 35 slides along the sliding groove 32 under the push of the pressing groove 34, realizing the expansion or contraction of the outer part to adjust the tension of the roll material. Specifically, the adjustment mechanism 3 is based on the fixed plate 31, and its internal slide groove 32 serves as the radial sliding guide for the components. The inner side of the fixed plate 31 is rigidly connected to the support mechanism 2 to ensure the coaxiality of power transmission. The outer rotating ring 33 can rotate around it and receive power by meshing with the components. When rotating, the extrusion groove 34 in the rotating ring 33 extrudes the sliding component 35 through the inclined surface, causing it to slide along the slide groove 32, thereby driving the outer parts to expand or contract, thus realizing the adjustment of the tension of the roll material.
[0019] The sliding assembly 35 includes a sliding plate 351, which is a key transmission component for radial adjustment. It completes power transmission by cooperating with other components. The outer side of the sliding plate 351 is slidably connected to the inside of the extrusion groove 34. When the rotating ring 33 rotates, the inclined surface of the extrusion groove 34 pushes the sliding plate 351 to slide radially. The outer side of the sliding plate 351 is slidably connected to the inside of the rotating ring 33. The rotating ring 33 provides a constraint track for the radial movement of the sliding plate 351, ensuring that its sliding direction is accurate. The outer side of the sliding plate 351 is fixedly connected to a sliding ring 352. The radial sliding of the sliding plate 351 will drive the sliding ring 352 to move synchronously, thereby realizing the support or tension adjustment of the roll material. Specifically, in the sliding assembly 35, the sliding plate 351 is the key component for radial adjustment. Its outer side is slidably connected to the extrusion groove 34 and the rotating ring 33. When the rotating ring 33 rotates, the inclined surface of the extrusion groove 34 pushes the sliding plate 351 to slide radially. The rotating ring 33 limits the sliding direction for it. The sliding ring 352 fixed on the outer side of the sliding plate 351 will move synchronously with the sliding plate 351, thereby realizing the support and tension adjustment of the roll material.
[0020] The support mechanism 2 includes a bracket 21, which serves as a vertical support structure, providing a stable mounting base for the motor 5 and the adjustment mechanism 3, ensuring the stability of the equipment during operation. The bottom of the bracket 21 is fixedly connected to the top of the base plate 1. This rigid connection makes the bracket 21 and the base plate 1 form an integral load-bearing structure, effectively dispersing the vibration and stress generated during equipment operation. A support platform 22 is fixedly connected to the outside of the bracket 21. The support platform 22 provides a horizontal mounting plane for the adjustment mechanism 3, ensuring the meshing accuracy of the rotating ring 33 and the rotating column 36, and maintaining the smoothness of transmission.
[0021] Specifically, the support mechanism 2, with the bracket 21 as its core, serves as a vertical support structure, providing a solid foundation for the installation of the motor 5 and the adjustment mechanism 3, ensuring stable operation of the equipment. The bottom of the bracket 21 is rigidly connected to the base plate 1, forming an overall load-bearing structure that disperses operational vibrations and stress. The support platform 22 on its outer side provides a horizontal mounting surface for the adjustment mechanism 3, ensuring precise meshing between the rotating ring 33 and the rotating column 36, maintaining smooth transmission, and facilitating efficient operation of the equipment.
[0022] Reference Figure 1 , Figure 2 and Figure 4The emergency stop mechanism 4 includes a rotating disk 41, which is fixedly connected to the drive end of the motor 5 via its outer side. The rotating disk 41 receives the rotational power output from the motor 5 and operates synchronously. The outer side of the rotating disk 41 is fixedly connected to the drive end of the motor 5. This connection method allows the rotating disk 41 to stably transmit the torque of the motor 5 to subsequent components, ensuring efficient power transmission. Three fixed rods 42 are fixedly connected to the inner side of the rotating disk 41. The fixed rods 42 rotate synchronously with the rotating disk 41, used to push the drive disk 43 to rotate and achieve mechanical limiting during emergency stop. A drive disc 43 is connected, which can rotate around the inner axis of the rotating disc 41. It receives rotational power through the push of the fixed rod 42 and transmits it to the rotating column 36. The outer side of the drive disc 43 is rotatably connected to the outer side of the bracket 21, which provides external support for the drive disc 43, ensuring its stability and coaxiality during rotation and preventing wobbling. The rotating column 36 is fixedly connected to the outer side of the drive disc 43, and rotates synchronously with the drive disc 43. Through the engagement of its outer teeth with the rotating ring 33, it transmits power to the adjusting mechanism 3. The outer side of the rotating column 36 rotates... Connected inside the bracket 21, the bracket 21 provides inner support and rotational constraint for the rotating column 36, ensuring its accuracy when meshing with the rotating ring 33. The outer side of the rotating column 36 and the inner side of the rotating ring 33 are meshed together. The rotational motion of the rotating column 36 is transmitted to the rotating ring 33 through gear transmission, realizing the power input of the adjusting mechanism 3. The drive disk 43 has three sliding grooves 44 inside, which provide sliding tracks for the fixed rod 42, allowing the fixed rod 42 to slide radially within the drive disk 43 to adapt to different rotational states. The outer side of the fixed rod 42... The fixed rod 42 is slidably connected inside the sliding groove 44. When the rotating disk 41 rotates, the fixed rod 42 slides in the sliding groove 44, pushing the rotating disk 43 to rotate or being limited in case of emergency stop. The sliding groove 44 is fixedly connected to the anti-collision block 45. The anti-collision block 45 is a mechanical limiting structure. In case of emergency stop, it blocks the fixed rod 42 from sliding, forcing the rotating disk 43 to stop rotating. The outer side of the fixed rod 42 is slidably connected to the outer side of the anti-collision block 45. When the motor 5 is turned off, the fixed rod 42 slides to the outer side of the anti-collision block 45 due to the inertia of the rotating disk 43 and is blocked, realizing the emergency braking of the rotating ring 33. Specifically, in the emergency stop mechanism 4, the rotating disk 41 is fixed to the drive end of the motor 5, receiving and transmitting power. Its inner fixed rod 42 rotates with the rotating disk 41, pushing the drive disk 43 to rotate. The outer side of the drive disk 43 is rotatably connected to the bracket 21 and receives outer support. Its outer rotating column 36 meshes with the rotating ring 33, transmitting power to the adjustment mechanism 3. The inner side of the rotating column 36 is also supported and constrained by the bracket 21. The sliding groove 44 in the drive disk 43 provides a sliding track for the fixed rod 42. The anti-collision block 45 in the groove acts as a mechanical limit. After the motor 5 is turned off, the drive disk 43 rotates due to inertia, and the fixed rod 42 slides to the outside of the anti-collision block 45 and is pushed, realizing the emergency braking of the rotating ring 33.
[0023] Working principle: When the operator needs to expand multiple sliding rings 352 outward, the motor 5 is started, which drives the rotating disk 41. After the rotating disk 41 rotates, it can slide through the fixed rod 42 connected to its inner side. After the fixed rod 42 slides to one side of the sliding groove 44, it can drive the driving disk 43. The driving disk 43 can then drive the rotating column 36. The rotating column 36 will drive the rotating ring 33 through the teeth connected to one side. Then, the squeezing groove 34 opened inside the rotating ring 33 can drive the sliding plate 351 inside. Through the squeezing groove 34 squeezing the sliding plate 351, the sliding plate 351 slides inside the sliding groove 32, thereby achieving the effect of expanding the sliding ring 352 outward.
[0024] When the staff needs to stop the rotating ring 33 in an emergency, they can turn off the motor 5. After the motor 5 is turned off, the rotating disk 41 will stop rotating, while the drive disk 43 will continue to rotate to one side due to inertia until the fixing rod 42 slides to the outside of the anti-collision block 45. Then the drive disk 43 will be blocked by the fixing rod 42, thereby achieving the effect of stopping the rotating ring 33 in an emergency.
[0025] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. An unwinding roller, comprising a base plate (1), characterized in that, A support mechanism (2) is fixedly connected to the top of the base plate (1), an adjustment mechanism (3) is fixedly connected to the outside of the support mechanism (2), a motor (5) is fixedly connected to the top of the support mechanism (2), and an emergency stop mechanism (4) is fixedly connected to the drive end of the motor (5). The adjustment mechanism (3) includes a fixed plate (31), the inner side of which is fixedly connected to the outer side of the support mechanism (2), and a rotating ring (33) is rotatably connected to the outer side of the fixed plate (31). An extrusion groove (34) is provided inside the rotating ring (33), and a sliding component (35) is slidably connected inside the extrusion groove (34).
2. The unwinding roller according to claim 1, characterized in that, The sliding assembly (35) includes a sliding plate (351), the outer side of which is slidably connected to the inside of the rotating ring (33), and a sliding ring (352) is fixedly connected to the outer side of the sliding plate (351).
3. The unwinding roller according to claim 2, characterized in that, The support mechanism (2) includes a bracket (21), the bottom of which is fixedly connected to the top of the base plate (1), and a support platform (22) is fixedly connected to the outside of the bracket (21).
4. The unwinding roller according to claim 3, characterized in that, The emergency stop mechanism (4) includes a rotating disk (41), the outer side of which is fixedly connected to the drive end of the motor (5), and three fixed rods (42) are fixedly connected to the inner side of the rotating disk (41). A driving disk (43) is rotatably connected to the inner side of the rotating disk (41). Three sliding grooves (44) are provided inside the driving disk (43), and anti-collision blocks (45) are fixedly connected inside the sliding grooves (44).
5. The unwinding roller according to claim 4, characterized in that, A rotating column (36) is fixedly connected to the outer side of the drive disc (43), and the outer side of the rotating column (36) is engaged with the inner side of the rotating ring (33).
6. The unwinding roller according to claim 4, characterized in that, The outer side of the fixing rod (42) is slidably connected to the inside of the sliding groove (44), and the outer side of the fixing rod (42) is slidably connected to the outside of the anti-collision block (45).
7. The unwinding roller according to claim 3, characterized in that, The fixed plate (31) has multiple grooves (32) inside, and the outer side of the sliding plate (351) is slidably connected to the inside of the extrusion groove (34).
8. The unwinding roller according to claim 5, characterized in that, The outer side of the rotating column (36) is rotatably connected to the inside of the bracket (21), and the outer side of the drive disc (43) is rotatably connected to the outside of the bracket (21).