Unreeling machine capable of conveniently adjusting tensile force of thin film
By introducing tension adjustment devices and universal bearings into the unwinder, the problem of film tension cannot be adjusted is solved, ensuring the stability and product quality of the film during the conveying process, simplifying operation and reducing maintenance costs.
Patent Information
- Application Number
- CN202422820935.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The existing unwinding machines do not have the function of adjusting the film tension, which causes the film roll to become thinner during the unwinding process and the tension decreases, affecting the accuracy of the film slitting position and thus affecting the product quality.
An unwinding machine including a frame, unwinding roller and tensioning roller is designed. The tensioning roller is connected to the frame through a tensioning adjustment device. The position of the tensioning roller is adjusted by using a bearing seat and an adjustment handle to realize the adjustment of the film tensioning force. A universal bearing and a sliding mechanism are used to ensure stability and flexibility, and a driving mechanism and a guide roller ensure the stability of film conveying.
It realizes the appropriate tension of the film during the conveying process, improves product quality, is simple in structure, is convenient in operation, reduces maintenance costs, and extends the service life of the equipment.
Smart Images
Figure CN223254456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film production equipment, in particular to an unwinding machine which is convenient for adjusting the tension of a film. Background Art
[0002] With the rapid development of the economy, the circulation of goods is very extensive. A large number of goods need to be packaged in packaging bags before entering the market. As manufacturers' awareness of preventing counterfeit and inferior products increases, manufacturers generally use laser anti-counterfeiting marks, and affix laser anti-counterfeiting marks with specific patterns on the outer packaging to remind consumers to distinguish between true and false. In the existing laser film production process, the film roll needs to be unwound by an unwinder and transported to the slitting mechanism to cut the film into strips according to the required size. However, the existing unwinder does not have the function of adjusting the film tension. As the unwinding progresses, the thickness of the film roll on the unwinder gradually becomes thinner, and the tension of the film on the conveyor roller gradually decreases, which will cause some films to have slitting position deviations, affecting product quality and having certain limitations. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a film unwinding machine which is simple in structure, easy to operate, can keep the film in appropriate tension during transportation, effectively improves product quality, and is easy to adjust the film tension.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A reeling machine for facilitating adjustment of film tensioning force comprises a frame, on which an unwinding roller and a tensioning roller are rotatably arranged, and both ends of the tensioning roller are connected to the frame via a tensioning adjustment device, wherein the tensioning adjustment device comprises a mounting seat fixedly arranged on the frame, a bearing seat movably arranged on the mounting seat, an adjustment handle for driving the bearing seat to reciprocate, and a bearing sleeved on the tensioning roller, wherein the bearing is arranged in the bearing seat.
[0006] As a further improvement of the above technical solution:
[0007] The bearing seat is slidably connected to the mounting seat via a sliding mechanism, wherein the sliding mechanism comprises a slide rail fixedly arranged on the mounting seat and a slider fixedly arranged on the bearing seat.
[0008] The adjustment handle includes a head and a rod, the rod is provided with an external thread, the bearing seat is provided with an internal threaded through hole, the rod passes through the mounting seat and is threadedly connected to the internal threaded through hole.
[0009] A support platform is formed on the bearing seat, and a pressure cover is detachably connected to the support platform. An accommodating cavity for accommodating the bearing is formed between the support platform and the pressure cover.
[0010] The bearing is a universal bearing.
[0011] The frame is provided with a driving mechanism for driving the unwinding roller to rotate.
[0012] A plurality of guide rollers are rotatably arranged on the frame.
[0013] Compared with the prior art, the advantages of the present invention are:
[0014] The unwinding machine of the utility model, which is convenient for adjusting the tension force of the film, comprises a frame, an unwinding roller and a tensioning roller, wherein the tensioning roller is connected to the frame through a tensioning adjustment device, and a bearing is sleeved on the tensioning roller, and the bearing is arranged in a bearing seat. By rotating the adjustment handle, the position of the bearing seat and the tensioning roller can be adjusted, thereby achieving the adjustment of the tension force of the film. The utility model has a simple structure and is easy to operate, and can enable the film to maintain appropriate tension during the transportation process, thereby effectively improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the structure of the unwinder for easy adjustment of film tension.
[0016] Figure 2 It is a structural schematic diagram of the tensioning adjustment device.
[0017] Figure 3 This is a schematic diagram of the disassembled structure of the tensioning adjustment device.
[0018] Legend:
[0019] 1. Frame; 2. Unwinding roller; 3. Tensioning roller; 4. Tensioning adjustment device; 401. Mounting seat; 402. Bearing seat; 4021. Internal threaded through hole; 4022. Support platform; 4023. Pressure cover; 4024. Accommodating chamber; 403. Adjusting handle; 4031. Head; 4032. Rod; 404. Sliding mechanism; 4041. Slide rail; 4042. Slider; 5. Driving mechanism; 6. Guide roller. DETAILED DESCRIPTION
[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] like Figures 1 to 3As shown, the unwinding machine for adjusting the film tensioning force of this embodiment includes a frame 1, on which an unwinding roller 2 and a tensioning roller 3 are rotatably arranged, and both ends of the tensioning roller 3 are connected to the frame 1 through a tensioning adjustment device 4. The tensioning adjustment device 4 includes a mounting seat 401 fixedly arranged on the frame 1, a bearing seat 402 movably arranged on the mounting seat 401, an adjusting handle 403 for driving the bearing seat 402 to move back and forth, and a bearing (not shown in the figure) sleeved on the tensioning roller 3, and the bearing is arranged in the bearing seat 402. The unwinding machine, which is convenient for adjusting the tension of the film, includes a frame 1, an unwinding roller 2 and a tensioning roller 3, wherein the tensioning roller 3 is connected to the frame 1 through a tensioning adjustment device 4, and a bearing is provided on the tensioning roller 3, and the bearing is arranged in a bearing seat 402. By rotating the adjustment handle 403, the position of the bearing seat 402 and the tensioning roller 3 can be adjusted, thereby adjusting the tension of the film. The structure is simple and the operation is convenient, and the film can maintain appropriate tension during transportation, thereby effectively improving product quality.
[0022] Preferably, the bearing seat 402 is slidably connected to the mounting seat 401 through a sliding mechanism 404. The sliding mechanism 404 includes a slide rail 4041 fixedly arranged on the mounting seat 401 and a slider 4042 fixedly arranged on the bearing seat 402. It has the advantages of simple and compact structure, good operation stability and long service life.
[0023] Preferably, the adjustment handle 403 includes a head 4031 and a rod 4032. The rod 4032 is provided with an external thread, and the bearing seat 402 is provided with an internally threaded through-hole 4021. The rod 4032 passes through the mounting seat 401 and is threadedly connected to the internally threaded through-hole 4021. In this embodiment, the rod 4032 is provided with an external thread, the bearing seat 402 is provided with an internally threaded through-hole 4021, and the rod 4032 and the internally threaded through-hole 4021 are threadedly connected. The operator can adjust the position of the bearing seat 402 forward or backward by rotating the adjustment handle 403 forward or reverse, which is simple and convenient to operate and highly flexible to use.
[0024] Preferably, a support platform 4022 is formed on the bearing seat 402, to which a pressure cover 4023 is detachably connected. A receiving cavity 4024 for accommodating the bearing is formed between the support platform 4022 and the pressure cover 4023. In this embodiment, the bearing seat 402 adopts a split structure, and the pressure cover 4023 and the support platform 4022 are connected by fasteners, which facilitates the installation and removal of the bearing. When the bearing needs to be replaced or repaired, only the pressure cover 4023 needs to be removed to remove the bearing, without having to disassemble the entire bearing seat 402, which can effectively reduce maintenance costs and improve maintenance efficiency.
[0025] Preferably, the bearing is a universal bearing. In this embodiment, since the tensioning roller 3 is adjusted by manually rotating the adjustment handle 403, the axes of the bearing seats 402 at both ends may not coincide. Therefore, the bearing is a universal bearing. It can adapt to complex rotation requirements, has a high load-bearing capacity, can withstand large axial loads and radial loads, and is conducive to extending the service life of the tensioning adjustment device 4.
[0026] Preferably, a driving mechanism 5 for driving the unwinding roller 2 to rotate is provided on the frame 1. In the present embodiment, the driving mechanism 5 adopts the form of a synchronous belt drive, including a driving motor, a driving pulley, a driven pulley and a synchronous belt, the driving pulley is circumferentially fixedly connected to the output shaft of the driving motor, the driven pulley is circumferentially fixedly connected to the core shaft of the unwinding roller 2, and the synchronous belt is wound between the driving pulley and the driven pulley, and the driving motor drives the driving pulley to rotate, thereby driving the unwinding roller 2 to rotate. It has the advantages of high transmission ratio accuracy, high transmission efficiency, good operating stability, and convenient and quick maintenance. In other embodiments, the driving mechanism 5 can also be selected from gear set transmission, chain transmission, worm gear transmission and other forms, and is not limited to this embodiment.
[0027] Preferably, a plurality of sets of guide rollers 6 are rotatably provided on the frame 1. In this embodiment, the number of guide rollers 6 is set to two, one set of guide rollers 6 being provided on the input side of the tensioning roller 3, and the other set of guide rollers 6 being provided on the output side of the tensioning roller 3. This enables the film to maintain the correct direction and position during the unwinding and conveying process, ensuring that the film does not deviate from the predetermined path during the unwinding and conveying process, thereby ensuring the normal operation of the equipment and product quality; in other embodiments, the number of guide rollers 6 can be increased or decreased according to actual production needs, with high flexibility in use, and is not limited to this embodiment.
[0028] The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiment. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of the present invention should also be considered as the scope of protection of the present invention.
Claims
1. A reeling machine for adjusting film tension, comprising a frame (1), characterized in that: An unwinding roller (2) and a tensioning roller (3) are rotatably arranged on the frame (1), and both ends of the tensioning roller (3) are connected to the frame (1) via a tensioning adjustment device (4). The tensioning adjustment device (4) comprises a mounting seat (401) fixedly arranged on the frame (1), a bearing seat (402) movably arranged on the mounting seat (401), an adjustment handle (403) for driving the bearing seat (402) to move back and forth, and a bearing sleeved on the tensioning roller (3), wherein the bearing is arranged in the bearing seat (402).
2. The unwinding machine for adjusting film tension according to claim 1, characterized in that: The bearing seat (402) is slidably connected to the mounting seat (401) via a sliding mechanism (404), wherein the sliding mechanism (404) comprises a slide rail (4041) fixedly arranged on the mounting seat (401) and a slider (4042) fixedly arranged on the bearing seat (402).
3. The unwinding machine for facilitating adjustment of film tension according to claim 2, characterized in that: The adjusting handle (403) comprises a head (4031) and a rod (4032), the rod (4032) being provided with an external thread, an internal threaded through hole (4021) being provided in the bearing seat (402), and the rod (4032) passing through the mounting seat (401) and being threadedly connected to the internal threaded through hole (4021).
4. The unwinding machine for adjusting film tension according to claim 3, characterized in that: A support platform (4022) is formed on the bearing seat (402), a pressure cover (4023) is detachably connected to the support platform (4022), and an accommodating cavity (4024) for accommodating the bearing is formed between the support platform (4022) and the pressure cover (4023).
5. The unwinding machine for adjusting film tension according to claim 4, characterized in that: The bearing is a universal bearing.
6. The unwinding machine for adjusting film tension according to claim 5, characterized in that: The frame (1) is provided with a driving mechanism (5) for driving the unwinding roller (2) to rotate.
7. The unwinding machine for adjusting film tension according to claim 6, characterized in that: A plurality of groups of guide rollers (6) are rotatably arranged on the frame (1).