A rewinding device integrating forward and reverse rotation.

Abstract

This utility model discloses a rewinding device integrating forward and reverse rotation, including a frame and two film winding and unwinding mechanisms symmetrically arranged on the frame. Both mechanisms can perform film winding and unwinding operations. The first mechanism includes a winding / unwinding shaft, a film traction assembly, and a shaft drive assembly; the second mechanism includes a winding / unwinding shaft, a film traction assembly, and a shaft drive assembly. This rewinding device enables integrated forward and reverse rotation operation, overcoming the limitations of traditional unidirectional rewinding devices. The winding and unwinding directions can be switched without changing equipment, reducing process adjustment time and improving production flexibility and continuity. The unidirectional bearing design simplifies the drive switching structure, avoiding drive conflicts without additional control components, and improving overall rewinding efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of rewinding devices, specifically a rewinding device that integrates forward and reverse rotation. Background Technology

[0002] In the processing of rolled materials such as film and labels, the rewinding device is a key piece of equipment for realizing the winding, unwinding and sorting of materials, and its performance directly affects the processing efficiency and quality of the products.

[0003] However, traditional rewinding devices have significant technical limitations: on the one hand, traditional rewinding machines typically only have the winding end as the power shaft, while the unwinding end relies on a magnetic powder brake for unwinding tension control. This structure means the device can only perform unidirectional rewinding and cannot complete the rewinding function. When operations such as coding need to be completed during the forward rewinding process, if the material needs to be rewound, additional equipment or manual assistance is often required, which not only increases the complexity of the process but also reduces production efficiency.

[0004] On the other hand, traditional rewinding equipment struggles to maintain a stable speed during the rewinding process. As the winding diameter increases during rewinding, the film conveying speed of traditional equipment tends to increase with the change in winding diameter, leading to uneven material tension and affecting rewinding quality. This speed fluctuation can cause product defects, especially for high-precision film or label processing.

[0005] In addition, the winding and unwinding mechanisms of traditional rewinding devices are single-function, with winding and unwinding usually achieved by independent structures. The overall structure is complex, the operation is inflexible, and it is difficult to meet the needs of modern production for efficient and multi-functional rewinding equipment. Utility Model Content

[0006] The purpose of this invention is to provide a rewinding device that integrates forward and reverse rotation, in order to solve the technical problems existing in the background art.

[0007] This utility model provides a rewinding device that integrates forward and reverse rotation, including a frame, a first film winding and unwinding mechanism and a second film winding and unwinding mechanism symmetrically arranged on the frame, both of which can perform film winding and unwinding operations.

[0008] The first film winding and unwinding mechanism includes a winding and unwinding shaft, a film winding traction assembly, and a shaft driving assembly; the second film winding and unwinding mechanism includes a winding and unwinding shaft, a film winding traction assembly, and a shaft driving assembly.

[0009] The first and second film traction components pull the film in the same direction. The first and second shaft drive components are used to drive the first and second take-up shafts to rotate, respectively. The first and second shaft drive components do not work at the same time, and work when their corresponding ends are the take-up ends.

[0010] In a preferred embodiment, the film winding traction assembly includes a traction motor, a mounting shaft, a pulley set, a traction roller driven by the pulley set, and a pressure roller disposed near the traction roller.

[0011] The second film traction assembly includes a second traction motor, a second mounting shaft, a second pulley set, a second traction roller driven by the second pulley set, and a second pressure roller disposed near the second traction roller.

[0012] In a preferred embodiment, the pulley assembly includes a first synchronous pulley connected to the output shaft of a traction motor, a second synchronous pulley disposed on a mounting shaft, and a belt connecting the first synchronous pulley and the second synchronous pulley. The first traction roller is fixedly connected to the mounting shaft.

[0013] The second pulley assembly includes a third synchronous pulley connected to the output shaft of the second traction motor, a fourth synchronous pulley mounted on the second mounting shaft, and a second belt connecting the third synchronous pulley and the fourth synchronous pulley. The second traction roller is fixedly connected to the second mounting shaft.

[0014] In a preferred embodiment, both the first traction roller and the second traction roller are rubber-coated rollers.

[0015] In a preferred embodiment, both the first and second retractable shafts are air shafts.

[0016] In a preferred embodiment, a magnetic powder clutch is connected to the first take-up and release shaft, a magnetic powder clutch is connected to the second take-up and release shaft, an electric brake disc is provided on the opposite side of the first magnetic powder clutch, and an electric brake disc is provided on the opposite side of the second magnetic powder clutch.

[0017] In a preferred embodiment, the shaft drive assembly 1 includes a synchronous pulley 5 disposed on the mounting shaft 1 and a synchronous pulley 6 disposed on the magnetic powder clutch, as well as a belt 3 connecting the synchronous pulley 5 and the synchronous pulley 6, and a one-way bearing 1 is provided at the connection between the synchronous pulley 5 and the mounting shaft 1;

[0018] The shaft drive assembly 2 includes a synchronous pulley 7 disposed on the mounting shaft 2 and a synchronous pulley 8 disposed on the magnetic powder clutch, as well as a belt 4 connecting the synchronous pulley 7 and the synchronous pulley 8. A one-way bearing 2 is provided at the connection between the synchronous pulley 7 and the mounting shaft 2.

[0019] The one-way bearing and the one-way bearing act in opposite directions.

[0020] The beneficial effects of this utility model's technical solution are:

[0021] The rewinding device in this solution can achieve integrated forward and reverse rotation, breaking through the limitation of traditional devices that only rewind in one direction. It can switch the winding and unwinding directions without changing equipment, reducing process adjustment time and improving production flexibility and continuity.

[0022] By working together with dual traction components and in conjunction with the design of pressure rollers and rubber-coated rollers, the film winding clamping force is enhanced, slippage and deviation are prevented, stable conveying is ensured, and the speed fluctuation problem of traditional devices is solved.

[0023] The one-way bearing design simplifies the drive switching structure, avoids drive conflicts without the need for additional control components, and improves overall rewinding efficiency and quality. Attached Figure Description

[0024] Figure 1 This is a front view of the overall structure of this utility model.

[0025] Figure 2 This is a rear view of the overall structure of this utility model.

[0026] Figure 3 This is a sectional view of one side of the film winding traction assembly of this utility model.

[0027] Figure 4 This is a sectional view of one side of the shaft drive assembly of this utility model.

[0028] Figure 5 This is a two-side sectional view of the film winding traction assembly of this utility model.

[0029] Figure 6 This is a two-side sectional view of the shaft drive assembly of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Film winding and unwinding mechanism I; 201. Winding and unwinding shaft I; 202. Mounting shaft I; 203. Traction motor I; 204. Synchronous pulley I; 205. Synchronous pulley II; 206. Belt I; 207. Traction roller I; 208. Pressure roller I; 209. Synchronous pulley V; 210. Synchronous pulley VI; 211. Belt III; 212. One-way bearing I; 213. Magnetic powder clutch I; 214. Electric brake disc I; 3. Film winding and unwinding mechanism II; 301. Winding and unwinding shaft II; 302. Mounting shaft II; 303. Traction motor II; 304. Synchronous pulley III; 305. Synchronous pulley IV; 306. Belt II; 307. Traction roller II; 308. Pressure roller II; 309. Synchronous pulley VII; 310. Synchronous pulley VIII; 311. Belt IV; 312. One-way bearing II; 313. Magnetic powder clutch II; 314. Electric brake disc II; 4. Coding device; 5. Correction device. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0032] like Figures 1-6 As shown, the present invention provides a rewinding device integrating forward and reverse rotation, including a frame 1, a film winding and unwinding mechanism 1 2 and a film winding and unwinding mechanism 2 3 symmetrically arranged on the frame 1, both of which can perform film winding and unwinding operations.

[0033] In the above scheme, if the film winding and unwinding mechanism 2 is set as the unwinding end and the film winding and unwinding mechanism 3 is set as the winding end, then when rewinding is required, it is only necessary to switch the film winding and unwinding mechanism 2 to the winding end and the film winding and unwinding mechanism 3 to the unwinding end. This setting can ensure that the coding device 4 can smoothly perform coding, and at the same time achieve rapid rewinding without changing equipment or adjusting the overall structure. It breaks through the limitation of the single winding and unwinding function of traditional rewinding devices, realizes the integrated operation of forward and reverse rotation, reduces the equipment adjustment time during process switching, and improves production flexibility.

[0034] The first film winding and unwinding mechanism 2 includes a winding and unwinding shaft 201, a film winding traction assembly 1, and a shaft drive assembly 1. The second film winding and unwinding mechanism 3 includes a winding and unwinding shaft 301, a film winding traction assembly 2, and a shaft drive assembly 2. The first and second film winding traction assemblies pull the film in the same direction. The first and second shaft drive assemblies are used to drive the first and second winding shafts 201 and 301 to rotate, respectively. The first and second shaft drive assemblies do not work simultaneously, but only when their corresponding ends are the winding ends.

[0035] In the above scheme, when the film winding and unwinding mechanism 2 3 is the winding end, the shaft drive assembly 2 starts to drive the winding and unwinding shaft 2 301 to rotate for winding, the film winding and unwinding mechanism 1 2 is the unwinding end, the shaft drive assembly 1 does not work, and the film traction assemblies 1 and 2 synchronously and in the same direction pull the film from the unwinding end to the winding end; conversely, when the film winding and unwinding mechanism 1 2 is the winding end, the shaft drive assembly 1 works, the shaft drive assembly 2 stops, and the film is transported in the opposite direction in the same direction.

[0036] By alternating the operation of the drive components and traction components working in the same direction, the winding and unwinding process is coordinated and orderly, avoiding bidirectional drive conflicts, while ensuring the stability of the film conveying direction, providing a stable foundation for subsequent coding, sorting and other processes.

[0037] The film winding traction assembly includes a traction motor 203, a mounting shaft 202, a pulley set 1, a traction roller 207 driven by the pulley set 1, and a pressure roller 208 disposed near the traction roller 207. The pulley set 1 includes a synchronous pulley 204 connected to the output shaft of the traction motor 203, a synchronous pulley 205 disposed on the mounting shaft 202, and a belt 206 connecting the synchronous pulley 204 and the synchronous pulley 205. The traction roller 207 is fixedly connected to the mounting shaft 202.

[0038] The second film winding traction assembly includes a second traction motor 303, a second mounting shaft 302, a second pulley set, a second traction roller 307 driven by the second pulley set, and a second pressure roller 308 disposed near the second traction roller 307. The second pulley set includes a third synchronous pulley 304 connected to the output shaft of the second traction motor 303, a fourth synchronous pulley 305 disposed on the second mounting shaft 302, and a second belt 306 connecting the third synchronous pulley 304 and the fourth synchronous pulley 305. The second traction roller 307 is fixedly connected to the second mounting shaft 302.

[0039] In the above scheme, after the traction motor 203 starts, its power is transmitted to the synchronous pulley 205 via the synchronous pulley 204 and belt 206, driving the mounting shaft 202 and the traction roller 207 to rotate synchronously. The pressure roller 208 cooperates with the traction roller 207 to press the film roll tightly, and the friction of the traction roller 207 drives the film roll to move. Similarly, the power of the traction motor 303 is transmitted to the synchronous pulley 305 via the synchronous pulley 304 and belt 306, achieving synchronous rotation of the mounting shaft 302 and the traction roller 307. Furthermore, a correction device 5 can be installed to prevent the film roll from shifting position. The coordinated operation of the dual traction components further improves the stability of the film roll conveying, providing structural assurance for constant speed.

[0040] Both the first traction roller 207 and the second traction roller 307 are rubber-coated rollers. When the elastic rubber layer on the surface of the rubber-coated roller comes into contact with the film roll, it can provide sufficient friction to drive the film roll conveying, and can also adapt to the slight unevenness of the film roll surface to maintain close contact.

[0041] Both the first retractor shaft 201 and the second retractor shaft 301 are air shafts. A magnetic powder clutch 213 is connected to the first retractor shaft 201, and a magnetic powder clutch 313 is connected to the second retractor shaft 301. An electric brake disc 214 is provided on the opposite side of the first magnetic powder clutch 213, and an electric brake disc 314 is provided on the opposite side of the second magnetic powder clutch 313.

[0042] The air shaft can quickly fix the film roll by inflating it, and can be removed after deflating it. When the take-up / unwind shaft 201 is the unwinding end, the electric brake disc 214 brakes the outer ring of the magnetic powder clutch 213. The tension generated by the magnetic powder clutch 213 limits the unwinding speed and prevents the film from loosening. When the take-up / unwind shaft 201 is the winding end, the electric brake disc 214 does not work, and the magnetic powder clutch 213 provides winding tension according to the setting to ensure that the film is tightly wound.

[0043] The first shaft drive assembly includes a fifth synchronous pulley 209 mounted on the first mounting shaft 202 and a sixth synchronous pulley 210 mounted on the first magnetic powder clutch 213, as well as a third belt 211 connecting the fifth synchronous pulley 209 and the sixth synchronous pulley 210. A one-way bearing 212 is provided at the connection between the fifth synchronous pulley 209 and the first mounting shaft 202. The second shaft drive assembly includes a seventh synchronous pulley 309 mounted on the second mounting shaft 302 and a eighth synchronous pulley 310 mounted on the second magnetic powder clutch 313, as well as a fourth belt 311 connecting the seventh synchronous pulley 309 and the eighth synchronous pulley 310. A one-way bearing 312 is provided at the connection between the seventh synchronous pulley 309 and the second mounting shaft 302. The first one-way bearing 212 and the second one-way bearing 312 operate in opposite directions.

[0044] In the above scheme, the film take-up and unwind mechanism 2 is set as the unwinding end, and the film take-up and unwind mechanism 3 is set as the winding end. The rotation of the mounting shaft 2 302 drives the synchronous pulley 7 309, which drives the synchronous pulley 8 310 and the magnetic powder clutch 2 313 through the belt 4 311, thereby driving the take-up and unwind shaft 2 301 to wind up. At this time, the one-way bearing 2 312 does not slip. However, when the film take-up and unwind mechanism 2 is the unwinding end, the one-way bearing 1 212 slips when the mounting shaft 1 202 rotates, the synchronous pulley 5 209 cannot drive the synchronous pulley 6 210, and the shaft drive assembly 1 does not work. Conversely, when the film take-up and unwind mechanism 2 is the winding end, the one-way bearing 1 212 does not slip, the one-way bearing 2 312 slips, and only the shaft drive assembly 1 works. The take-up and unwinding directions can be switched by changing the rotation direction of the traction motors 1 203 and 2 303.

[0045] The reverse design of the one-way bearing ensures that the shaft drive assembly only works when the corresponding end is being wound up, and drive switching can be achieved without additional control components, simplifying the structure; rotation can be achieved by changing the direction of the motor, without disassembling or adjusting the film roll. With the stable conveying of the film roll traction assembly, rewinding can be performed directly after forward rewinding and coding, solving the problem that traditional devices cannot rewind and improving production continuity.

[0046] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A rewinding device integrating forward and reverse rotation, characterized in that: It includes a frame, and two film winding and unwinding mechanisms symmetrically arranged on the frame, both of which can perform film winding and unwinding operations. The first film winding and unwinding mechanism includes a winding and unwinding shaft, a film winding traction assembly, and a shaft driving assembly; the second film winding and unwinding mechanism includes a winding and unwinding shaft, a film winding traction assembly, and a shaft driving assembly. The first and second film traction components pull the film in the same direction. The first and second shaft drive components are used to drive the first and second take-up shafts to rotate, respectively. The first and second shaft drive components do not work at the same time, and work when their corresponding ends are the take-up ends.

2. The rewinding device integrating forward and reverse rotation according to claim 1, characterized in that: The film winding traction assembly includes a traction motor, a mounting shaft, a pulley set, a traction roller driven by the pulley set, and a pressure roller disposed near the traction roller. The second film traction assembly includes a second traction motor, a second mounting shaft, a second pulley set, a second traction roller driven by the second pulley set, and a second pressure roller disposed near the second traction roller.

3. The rewinding device integrating forward and reverse rotation according to claim 2, characterized in that: The first pulley assembly includes a first synchronous pulley connected to the output shaft of a first traction motor, a second synchronous pulley mounted on a first mounting shaft, and a first belt connecting the first synchronous pulley and the second synchronous pulley. The first traction roller is fixedly connected to the first mounting shaft. The second pulley assembly includes a third synchronous pulley connected to the output shaft of the second traction motor, a fourth synchronous pulley mounted on the second mounting shaft, and a second belt connecting the third synchronous pulley and the fourth synchronous pulley. The second traction roller is fixedly connected to the second mounting shaft.

4. The rewinding device integrating forward and reverse rotation according to claim 2, characterized in that: Both the first traction roller and the second traction roller are rubber-coated rollers.

5. The rewinding device integrating forward and reverse rotation according to claim 3, characterized in that: Both the first and second retractable shafts are air-expanding shafts.

6. The rewinding device integrating forward and reverse rotation according to claim 5, characterized in that: A magnetic powder clutch is connected to the first take-up and take-down shaft, and a magnetic powder clutch is connected to the second take-up and take-down shaft. An electric brake disc is provided on the opposite side of the first magnetic powder clutch, and an electric brake disc is provided on the opposite side of the second magnetic powder clutch.

7. A rewinding device integrating forward and reverse rotation according to claim 6, characterized in that: The shaft drive assembly includes a synchronous pulley five disposed on the mounting shaft one and a synchronous pulley six disposed on the magnetic powder clutch, as well as a belt three connecting the synchronous pulley five and the synchronous pulley six. A one-way bearing one is provided at the connection between the synchronous pulley five and the mounting shaft one. The shaft drive assembly 2 includes a synchronous pulley 7 disposed on the mounting shaft 2 and a synchronous pulley 8 disposed on the magnetic powder clutch, as well as a belt 4 connecting the synchronous pulley 7 and the synchronous pulley 8. A one-way bearing 2 is provided at the connection between the synchronous pulley 7 and the mounting shaft 2. The one-way bearing and the one-way bearing act in opposite directions.

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