A film roll carrying hoist
By designing a film roll lifting device with a hoisting mechanism, a buffer mechanism, and a positioning mechanism, the problems of speed control and positioning during film roll handling were solved, enabling the safe and stable placement of film rolls and preventing damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TONGFENG ELECTRONICS
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-21
AI Technical Summary
In the current film roll handling process, the lifting equipment cannot accurately control the lowering speed, which leads to the film roll colliding with the target location or being damaged during stacking.
A lifting device was designed, comprising a lifting mechanism, a buffer mechanism, and a positioning mechanism. The device uses steel cable buffering, piston cylinder to control the lowering speed, and positioning arm to clamp the film roll core to prevent swaying.
This technology enables the film roll to descend slowly and be positioned stably during placement, avoiding damage caused by collisions and shaking, and improving handling safety.
Smart Images
Figure CN224530420U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of film roll production equipment technology, specifically to a lifting device for handling film rolls. Background Technology
[0002] In industries such as film manufacturing, printing, and packaging, film rolls (such as plastic film, metal foil, and paper rolls) are important raw materials or semi-finished products. These film rolls are usually large in size, heavy in weight, and have relatively fragile core structures, which places high demands on their handling and transfer processes.
[0003] In existing technologies, specialized lifting devices with pneumatic clamps are commonly used for handling film rolls. The operator moves the lifting device above the film roll, and the pneumatic clamps extend and grip the film roll core through the inner holes at both ends. The lifting device then lifts and moves the film roll to a pallet or stacking rack at the target location. However, when placing the film roll, because there is a certain distance between the clamp's control structure and the target location, the operator cannot directly observe this distance. If the film roll is dropped directly, it will fall and cause damage. If the operator controls the lifting device to descend slowly, because the operator cannot judge the distance between the film roll and the lifting device, when the film roll contacts the pallet or stacking rack, it stops moving, and the continuing-moving lower surface of the lifting device collides and crushes the upper surface of the film roll, causing damage. Therefore, we propose a lifting device for handling film rolls. Summary of the Invention
[0004] The purpose of this invention is to provide a lifting device for transporting film rolls, which solves the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A lifting device for transporting film rolls, including a lifting frame;
[0007] The gantry is equipped with a hoisting mechanism, which includes a support frame connected to the gantry. Steel cables are connected to both ends of the support frame, and a movable frame is fixedly connected to the end of each steel cable. A stabilizing device is connected to the bottom of the support frame to limit the relative displacement between the support frame and the movable frame.
[0008] Preferably, the movable frame is slidably connected with clamping arms, and there are two clamping arms, which are symmetrically connected to both ends of the movable frame.
[0009] Preferably, the movable frame is connected to a drive assembly for driving the clamping arm to move. The drive assembly is one of a linear motor, an electric push rod, a cylinder, or a hydraulic cylinder.
[0010] Preferably, the hoisting mechanism is provided with a buffer mechanism, which includes a piston cylinder, the piston cylinder being fixedly connected to both ends of the support frame, a piston rod being slidably connected inside the piston cylinder, and a steel cable being fixedly connected to the end of the piston rod.
[0011] Preferably, a crossbar is fixedly connected to one end of the piston rod, a support ring is fixedly connected to the top end of the movable frame, and the two ends of the steel cable are respectively fixedly connected to the two ends of the crossbar, with the steel cable passing through the support ring.
[0012] Preferably, a pipe is fixedly connected to one side of the piston cylinder, the pipes are interconnected, and a power element is fixedly connected to the end of the pipe, the power element being an oil pump or an air pump.
[0013] Preferably, the hoisting mechanism is provided with a positioning mechanism, which includes a positioning arm and a clamping arm structure corresponding to each other. The positioning arm is slidably connected to the clamping arm, and the ends of the positioning arm and the clamping arm are arc-shaped structures.
[0014] Preferably, a second piston cylinder is fixedly connected to the clamping arm, a second piston rod is connected inside the second piston cylinder, and the positioning arm is fixedly connected to the second piston rod.
[0015] Preferably, a second pipe is fixedly connected to the second piston cylinder, the second pipes are interconnected, the first pipe and the second pipe are interconnected through a connecting pipe, and a solenoid valve is provided on the connecting pipe.
[0016] Preferably, the stabilizing device is one of a cylinder, an electric actuator, or a hydraulic cylinder.
[0017] By employing the above technical solution, the present invention provides a lifting device for transporting film rolls, which has at least the following beneficial effects:
[0018] (1) The present invention sets up a buffer structure between the support frame and the moving frame through the hoisting mechanism, so that when the film roll is moved to the set position and placed, it can continuously and slowly descend, avoiding damage to the film roll caused by direct drop. At the same time, the contact between the moving frame and the film roll is also buffered by the steel cable, avoiding damage to the film roll caused by the squeezing of the moving frame.
[0019] (2) The present invention can automatically and slowly place the film roll by using the compressed air inside the piston cylinder when placing the film roll, thereby avoiding damage to the film roll caused by the operator lowering the film roll too fast.
[0020] (3) The present invention can perform clamping and positioning operations on the inner core of the film roll through the positioning mechanism, thereby improving the clamping and positioning effect of the film roll and avoiding the shaking of the film roll during transportation caused by single-point suspension. Attached Figure Description
[0021] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application:
[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention. Figure 1 ;
[0023] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention. Figure 2 ;
[0024] Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;
[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0026] Figure 5 This is a schematic diagram of the structure of Embodiment 3 of the present invention;
[0027] Figure 6 This is a schematic diagram of the internal structure of Embodiment 3 of the present invention.
[0028] In the diagram: 1. Hanger; 2. Lifting mechanism; 21. Support frame; 22. Steel cable; 23. Moving frame; 24. Stabilizing device; 25. Clamping arm; 26. Drive assembly; 3. Buffer mechanism; 31. Piston cylinder one; 32. Piston rod one; 33. Crossbar; 34. Support ring; 35. Pipe one; 36. Power element; 4. Positioning mechanism; 41. Positioning arm; 42. Piston cylinder two; 43. Piston rod two; 44. Pipe two; 45. Solenoid valve. Detailed Implementation
[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0030] Example 1
[0031] A lifting device for transporting film rolls, such as Figures 1-6As shown, it includes a hanger 1; the hanger 1 is equipped with a lifting mechanism 2 for lifting the film roll. The lifting mechanism 2 can lift the packaged film roll and transfer the film roll from the packaging area to the storage or outbound area.
[0032] Specifically, the lifting mechanism 2 includes a support frame 21 connected to the hanger 1. Driven by the hanger 1, the support frame 21 can move along a preset track, facilitating the transfer of the film roll. Steel cables 22 are connected to both ends of the support frame 21, and a movable frame 23 is fixedly connected to the end of each cable 22. The steel cables 22 cushion the movement of the movable frame 23. When the film roll is placed after lifting, the descending movable frame 23 can be cushioned by the steel cables 22, reducing damage to the film roll caused by the squeezing of the movable frame 23. A clamping arm 25 is slidably connected to the movable frame 23, which can clamp and lift the film roll. A stabilizing device 24 is connected to the bottom of the support frame 21 to limit the relative displacement between the support frame 21 and the movable frame 23. The stabilizing device 24 is one of a cylinder, an electric push rod, or a hydraulic cylinder. In this embodiment, the stabilizing device 24 is a cylinder. The stabilizing device 24 can stabilize the moving frame 23. During the movement, the extended output end limits the swaying of the moving frame 23 to prevent the film roll from swaying due to the suspension of the flexible steel cable 22.
[0033] It is worth noting that a drive assembly 26 is connected to the movable frame 23 for driving the clamping arms 25 to move. There are two clamping arms 25, which are symmetrically connected to both ends of the movable frame 23. The drive assembly 26 is one of a linear motor, an electric push rod, a cylinder or a hydraulic cylinder. In this embodiment, the drive assembly 26 is an electric push rod, which can move the two clamping arms 25 and clamp the core of the film roll.
[0034] Example 2
[0035] like Figures 4-6 As shown, based on Embodiment 1, the hoisting mechanism 2 is equipped with a buffer mechanism 3 to buffer the placement of the film roll. The buffer mechanism 3 can buffer the moving frame 23 when the film roll is lowered to the ground or onto stacked film rolls, reducing the falling speed of the moving frame 23. Since most of the control structures of the hoisting mechanism 2 are fixed in specific positions, the target conveying position of the film roll will be a certain distance from the operator when operating the hoisting mechanism 2. Therefore, the operator cannot accurately judge the distance between the film roll and the ground, or the distance between the film roll and stacked film rolls. When the film roll is placed too quickly, it is easy for the film roll to collide with the ground or stacked film rolls, thereby causing damage to the film roll.
[0036] In this embodiment, the hoisting mechanism 2 is provided with a buffer mechanism 3. The buffer mechanism 3 includes two piston cylinders 31, which are respectively fixedly connected to both ends of the support frame 21. A piston rod 32 is slidably connected inside the piston cylinder 31. A steel cable 22 is fixedly connected to the end of the piston rod 32. The piston rod 32 and the piston cylinder 31 can cooperate with each other. When suspending the film roll, the medium inside the piston cylinder 31 is compressed by the weight of the film roll. When the film roll is about to move to a height close to the set position, the compressed medium is slowly discharged from the piston cylinder 31, thereby realizing the slow descent of the moving frame 23 and the film roll.
[0037] Furthermore, a crossbar 33 is fixedly connected to the top of the piston rod 32, and a support ring 34 is fixedly connected to the top of the movable frame 23. The two ends of the steel cable 22 are fixedly connected to the two ends of the crossbar 33 respectively. The steel cable 22 passes through the support ring 34. The crossbar 33 can balance the steel cable 22, so that the force of the steel cable 22 on both sides of the piston rod 32 is similar, avoiding excessive force on one side of the piston rod 32, which could cause it to bend.
[0038] In addition, a pipe 35 is fixedly connected to the side of piston cylinder 31. The two ends of the pipe 35 are respectively connected to the two piston cylinders 31. A power element 36 is fixedly connected to the end of the pipe 35. The power element 36 is an oil pump or an air pump. The power element 36 can pump hydraulic oil or air into the piston cylinder 31. In this embodiment, the power element 36 is an air pump.
[0039] Example 3
[0040] like Figures 5-6 As shown in Embodiment 2, the lifting mechanism 2 is equipped with a positioning mechanism 4 for positioning the lifting mechanism 2. The positioning mechanism 4 can position the clamping arm 25, thereby keeping the film roll clamped and positioned during the lifting process, preventing the film roll from swaying due to inertia during movement. When the lifting mechanism 2 lifts the film roll, it only uses the clamping arm 25 to lift it. Therefore, when the clamping arm 25 lifts the film roll through the core, it only supports the film roll through the contact area between the clamping arm 25 and the core. The film roll and the clamping arm 25 are in line contact. During movement, the film roll may sway due to stops or jerks. Since the film roll itself is heavy, swaying poses a certain risk. The positioning mechanism 4 can cooperate with the clamping arm 25 through the positioning arm 41 to clamp the inside of the core when the lifting mechanism 2 lifts the film roll, thereby preventing the film roll from swaying.
[0041] In this embodiment, the hoisting mechanism 2 is provided with a positioning mechanism 4, which includes a positioning arm 41. The positioning arm 41 and the clamping arm 25 are structurally corresponding to each other. The positioning arm 41 is slidably connected to the clamping arm 25. The ends of the positioning arm 41 and the clamping arm 25 are arc-shaped. The positioning arm 41 can cooperate with the clamping arm 25. The positioning arm 41 moves away from the clamping arm 25 until the distance between the end of the positioning arm 41 away from the clamping arm 25 and the end of the clamping arm 25 away from the positioning arm 41 is the maximum distance. Since the clamping arm 25 and the positioning arm 41 are both inside the core, this maximum distance is the diameter of the core. The clamping arm 25 is kept vertical under the restriction of the moving frame 23. Therefore, the center of gravity of the clamping arm 25 and the core are in the same vertical plane, thereby reducing the film roll factor.
[0042] Furthermore, a piston cylinder 42 is fixedly connected to the clamping arm 25, and a piston rod 43 is connected inside the piston cylinder 42. The positioning arm 41 is fixedly connected to the piston rod 43. The piston cylinder 42 and the piston rod 43 can cooperate with each other to drive the positioning arm 41.
[0043] Based on this, a second pipe 44 is fixedly connected to piston cylinder 42. Both ends of pipe 44 are interconnected with piston cylinder 42. Pipe 35 and pipe 44 are connected via a connecting pipe. Pipe 44 connects piston cylinder 31 and piston cylinder 42, using the compressed gas inside piston cylinder 31 to drive piston cylinder 42 and positioning arm 41. A solenoid valve 45 is installed on the connecting pipe, which controls the opening and closing of pipes 35 and 44. Solenoid valve 45 is a three-way valve, connected to pipes 35, 44, and the air pump via connecting pipes.
[0044] In use, the lifting device for transporting film rolls according to the present invention first controls the lifting frame 1 to move to a set position. Then, the lifting frame 1 controls the moving frame 23 to move above the film roll, aligning the clamping arm 25 with the roll core. The drive assembly 26 then starts and drives the clamping arm 25 to move into the roll core. Subsequently, the solenoid valve 45 controls the connection between pipe 35 and the power element 36. The power element 36 pumps gas into the piston cylinder 31. After the gas pressure rises to a set value, the solenoid valve 45 switches the connection between pipe 35 and pipe 44 and closes the connection between the power element and the pipe. The piston rod 43, driven by the compressed gas, pushes the positioning arm 41 to move continuously and cooperates with the clamping arm 25 to clamp and fix the roll core from the inside. Then, the lifting frame 1 controls the moving frame 23 to rise. After bearing the weight of the film roll, the moving frame 23 pushes the piston rod 32 downward. The gas inside the piston cylinder 31 then flows into the piston cylinder 42 through pipe 35 and pipe 44. Piston cylinder 2 (42) continuously pushes piston rod 2 (43) with internal air pressure, and positions the film roll through the cooperation of clamping arm 25 and positioning arm 41. After the film roll is positioned, stabilizing device 24 stabilizes moving frame 23 through its extended output end, preventing swaying of moving frame 23 caused by suspension by steel cable 22. At this time, the film roll, moving frame 23, and support frame 21 are stabilized by different structures, thus preventing the film roll from swaying during hoisting. When the film roll is hoisted close to the set position, stabilizing device 24 retracts its extended output end, and solenoid valve 45 switches control again, connecting pipe 1 (35) to power element 36 and closing pipe 2 (44). The solenoid valve 45 controls the air discharge speed inside piston cylinder 31, thereby controlling the descent speed of the film roll, so that the film roll is slowly placed on the ground or on stacked film rolls, avoiding damage caused by collision due to placing the film roll too quickly.
[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lifting device for transporting film rolls, comprising a lifting frame (1), characterized in that: The gantry (1) is provided with a hoisting mechanism (2), which includes a support frame (21). The support frame (21) is connected to the gantry (1). Steel cables (22) are connected to both ends of the support frame (21). A movable frame (23) is fixedly connected to the end of the steel cable (22). A stabilizing device (24) is connected to the bottom of the support frame (21) to limit the relative displacement between the support frame (21) and the movable frame (23).
2. The lifting device for transporting film rolls according to claim 1, characterized in that: The movable frame (23) is slidably connected to a clamping arm (25), and there are two clamping arms (25), which are symmetrically connected at both ends of the movable frame (23).
3. The lifting device for transporting film rolls according to claim 1, characterized in that: The movable frame (23) is connected to a drive assembly (26) for driving the clamping arm (25) to move. The drive assembly (26) is one of a linear motor, an electric push rod, a cylinder or a hydraulic cylinder.
4. A lifting device for transporting film rolls according to claim 2, characterized in that: The hoisting mechanism (2) is provided with a buffer mechanism (3), which includes a piston cylinder (31), which is fixedly connected to both ends of the support frame (21). A piston rod (32) is slidably connected inside the piston cylinder (31), and the steel cable (22) is fixedly connected to the end of the piston rod (32).
5. A lifting device for transporting film rolls according to claim 4, characterized in that: The piston rod (32) is fixedly connected to a crossbar (33) at its top end, and the movable frame (23) is fixedly connected to a support ring (34) at its top end. The two ends of the steel cable (22) are respectively fixedly connected to the two ends of the crossbar (33), and the steel cable (22) passes through the support ring (34).
6. A lifting device for transporting film rolls according to claim 4, characterized in that: Pipeline 1 (35) is fixedly connected to the side of piston cylinder 1 (31). Pipelines 1 (35) are interconnected. Power element (36) is fixedly connected to the end of pipeline 1 (35). Power element (36) is oil pump or air pump.
7. A lifting device for transporting film rolls according to claim 6, characterized in that: The hoisting mechanism (2) is provided with a positioning mechanism (4), which includes a positioning arm (41). The positioning arm (41) and the clamping arm (25) are structurally corresponding to each other. The positioning arm (41) is slidably connected to the clamping arm (25). The ends of the positioning arm (41) and the clamping arm (25) are arc-shaped.
8. A lifting device for transporting film rolls according to claim 7, characterized in that: A piston cylinder two (42) is fixedly connected to the clamping arm (25), and a piston rod two (43) is connected inside the piston cylinder two (42). The positioning arm (41) is fixedly connected to the piston rod two (43).
9. A lifting device for transporting film rolls according to claim 8, characterized in that: Pipeline 2 (44) is fixedly connected to piston cylinder 2 (42). Pipeline 2 (44) is interconnected. Pipeline 1 (35), pipeline 2 (44) and power element (36) are interconnected through connecting pipe. Solenoid valve (45) is provided on the connecting pipe.
10. A lifting device for transporting film rolls according to claim 1, characterized in that: The stabilizing device (24) is one of a cylinder, an electric push rod, or a hydraulic cylinder.