A PET plastic steel strapping rewinding machine

Abstract

This utility model discloses a PET plastic steel strapping rewinding machine, relating to the field of rewinding machines. The rewinding machine includes: a processing platform; a traction unit including several traction rollers for traction cooperation; and a winding assembly including a mounting frame, a first winding unit, a second winding unit, and a power structure. The mounting frame is slidably mounted on the processing platform. Both the first and second winding units are mounted on the mounting frame, and the power structure is mounted on the mounting frame. The mounting frame has a first position and a second position on the processing platform. When the mounting frame is in the first position, the first winding unit is configured to receive PET plastic steel strapping from the discharge end of the traction unit. When the mounting frame is in the second position, the second winding unit is configured to receive PET plastic steel strapping from the discharge end of the traction unit. This rewinding machine eliminates the downtime for roll changing, matching the continuous production rhythm of the rewinding machine with that of the extruder, and reducing the time-consuming process of manual roll changing.

Description

Technical Field

[0001] This utility model relates to the field of winding machines, and more specifically, to a PET plastic steel strapping winding machine. Background Technology

[0002] PET strapping is a high-strength packaging material made primarily of polyethylene terephthalate (PET) through extrusion molding and stretching processes. Compared to traditional steel strapping, it is widely used in logistics, home appliance manufacturing, and building material packaging to securely bundle goods, thanks to its lightweight, flexibility, corrosion resistance, and tensile strength exceeding 600 MPa.

[0003] As a key post-processing device in the PET strapping production process, the winding machine plays a crucial role in winding the extruded and stretched continuous strapping material into a finished product. When the strapping is conveyed to the winding station via the traction roller set, the winding machine uses the winding rollers to cause the strapping material to wind around the core in a spiral trajectory, ultimately forming a neatly shaped coil. This process not only achieves orderly winding of the strapping material but also ensures that the finished product meets the requirements of subsequent automated packaging equipment, making it a critical link connecting production and application.

[0004] Currently, most winding machines adopt a single-station winding design. After a single roll is wound, the machine needs to be stopped for operations such as core replacement and roll disassembly. This intermittent production mode relies on manual intervention. The entire process from old roll disassembly to new core installation takes a long time and is difficult to match the rhythm of continuous production of the extruder, resulting in an imbalance in the efficiency of the entire production line and restricting the improvement of the production efficiency of PET plastic steel strapping. Utility Model Content

[0005] The purpose of this utility model is to provide a PET plastic steel strapping rewinding machine, which aims to solve the technical problems in the background art mentioned above.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a PET plastic steel strapping winding machine, including: a processing platform; a traction unit including a plurality of traction rollers that cooperate in traction, and any one of the traction rollers is rotatably mounted on the processing platform; and a winding assembly including a mounting frame, a first winding unit, a second winding unit, and a power structure. The mounting frame is slidably mounted on the processing platform. The first winding unit and the second winding unit are both mounted on the mounting frame. The power structure is mounted on the mounting frame and is used to drive the first winding unit or the second winding unit to rotate. The mounting frame has a first position and a second position on the processing platform. When the mounting frame is in the first position, the first winding unit is configured to receive PET plastic steel strapping from the discharge end of the traction unit. When the mounting frame is in the second position, the second winding unit is configured to receive PET plastic steel strapping from the discharge end of the traction unit.

[0008] Furthermore, based on the aforementioned scheme, the power structure includes: a power shaft rotatably mounted on the mounting bracket; two first gears rotatably sleeved on both ends of the power shaft; wherein the two first gears are respectively connected to the first winding unit and the second winding unit; two second gears fixed on the power shaft and respectively spaced apart from the two first gears; two synchronous gears slidably sleeved on the two second gears and configured to mesh with the corresponding first gears; two pushing units for driving the sliding of the two synchronous gears; and a first drive motor for driving the power shaft to rotate.

[0009] Furthermore, based on the aforementioned scheme, any of the aforementioned driving units includes two electromagnets, which are respectively disposed on opposite sides of the aforementioned first gear and the aforementioned second gear; wherein, the aforementioned synchronous gear is a permanent magnet, and its two ends are respectively the N pole and the S pole.

[0010] Furthermore, based on the aforementioned scheme, the power shaft is fixedly sleeved with a first flywheel, and the output shaft of the first drive motor is provided with a second flywheel. The first flywheel and the second flywheel are driven by an annular belt.

[0011] Furthermore, based on the aforementioned scheme, the mounting frame is provided with a rack, and the rack meshes with a drive gear; wherein, the processing platform is provided with a second drive motor, and is connected to the drive gear in a transmission manner.

[0012] Furthermore, based on the aforementioned scheme, the processing platform is rotatably equipped with a connecting frame, and the free end of the connecting frame is equipped with a pressure roller for adaptation to the first winding unit or the second winding unit.

[0013] Furthermore, based on the aforementioned scheme, a torsion spring is provided at the rotatable connection between the connecting frame and the processing platform.

[0014] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0015] The PET plastic steel strapping rewinding machine of this application achieves continuous rewinding by mounting a dual winding unit on a sliding mounting frame. Specifically, the mounting frame slides and switches between a first position and a second position on the processing platform, allowing the first and second winding units to alternately engage with the discharge end of the traction unit. When one winding unit is rewinding, the other winding unit can simultaneously perform unwinding and core loading operations. By alternating between the two workstations, the machine avoids downtime for rewinding at a single workstation. Its advantages include eliminating the intermittent time for rewinding, matching the continuous production rhythm of the rewinding machine and the extruder, reducing the time-consuming process of manual intervention for rewinding, and achieving automated workstation switching through mechanical sliding switching. This improves the production continuity and efficiency of the entire production line and solves the problems of capacity waste and production line imbalance caused by single-workstation rewinding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 An isometric view of a PET plastic steel strapping rewinding machine according to an embodiment of this utility model. Figure 1 ;

[0018] Figure 2 An isometric view of a PET plastic steel strapping rewinding machine according to an embodiment of this utility model. Figure 2 ;

[0019] Figure 3 This is a side view of a PET plastic steel strapping rewinding machine according to an embodiment of the present invention;

[0020] Figure 4 This is a partial cross-sectional schematic diagram of the power structure according to an embodiment of the present utility model;

[0021] Figure 5 for Figure 3 A magnified view of part A in the image.

[0022] Icons: 1-Processing platform, 2-Traction roller, 3-Connecting frame, 4-Torsion spring, 5-First winding unit, 6-Second winding unit, 7-Pressure roller, 8-Mounting frame, 9-First drive motor, 10-Drive gear, 11-Straight rack, 12-Second drive motor, 13-Annular belt, 14-First flywheel, 15-Second flywheel, 16-First gear, 17-Synchronous gear, 18-Electromagnet, 19-Power shaft, 20-Second gear. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] Example

[0025] Please refer to Figures 1-5 This application provides a PET plastic steel strapping winding machine, including: a processing platform 1; a traction unit including a plurality of traction rollers 2 for traction cooperation, and any one of the traction rollers 2 is rotatably disposed on the processing platform 1; and a winding assembly including a mounting frame 8, a first winding unit 5, a second winding unit 6, and a power structure. The mounting frame 8 is slidably disposed on the processing platform 1. The first winding unit 5 and the second winding unit 6 are both disposed on the mounting frame 8. The power structure is disposed on the mounting frame 8 and is used to drive the first winding unit 5 or the second winding unit 6 to rotate. The mounting frame 8 has a first position and a second position on the processing platform 1. When the mounting frame 8 is in the first position, the first winding unit 5 is configured to receive PET plastic steel strapping from the discharge end of the traction unit. When the mounting frame 8 is in the second position, the second winding unit 6 is configured to receive PET plastic steel strapping from the discharge end of the traction unit.

[0026] The PET plastic steel strapping rewinding machine of this application achieves continuous rewinding by mounting a dual winding unit on a sliding mounting frame 8. Specifically, the mounting frame 8 slides and switches between a first position and a second position on the processing platform 1, so that the first winding unit 5 and the second winding unit 6 alternately connect to the discharge end of the traction unit. When one winding unit is rewinding, the other winding unit can simultaneously perform unwinding and core loading operations. By alternating between the two workstations, the machine avoids the need for single-workstation downtime for rewinding. Its advantages are that it eliminates the intermittent time of downtime for rewinding, matches the continuous production rhythm of the rewinding machine and the extruder, reduces the time-consuming process of manual intervention for rewinding, and achieves automated workstation switching through mechanical sliding switching, thereby improving the production continuity and efficiency of the entire production line and solving the problems of capacity waste and production line imbalance caused by single-workstation rewinding.

[0027] It is understandable that both the first winding unit 5 and the second winding unit 6 are winding rollers.

[0028] In a preferred embodiment, the aforementioned power structure includes: a power shaft 19 rotatably mounted on the mounting bracket 8; two first gears 16 rotatably sleeved at both ends of the power shaft 19; wherein the two first gears 16 are respectively connected to the first winding unit 5 and the second winding unit 6; two second gears 20, both fixed on the power shaft 19, and respectively spaced apart from the two first gears 16; two synchronizing gears 17 slidably sleeved on the two second gears 20, and configured to mesh with the corresponding first gears 16; two pushing units, respectively used to drive the sliding of the two synchronizing gears 17; and a first drive motor 9 used to drive the power shaft 19 to rotate.

[0029] In the above embodiment, the power structure realizes the power distribution of the dual winding unit through gear meshing transmission and sliding switching mechanism. The principle is as follows: the first drive motor 9 drives the power shaft 19 to rotate, and the second gear 20 fixed on the power shaft 19 rotates accordingly. When the push unit drives the synchronous gear 17 to slide to mesh with the corresponding side first gear 16, the power is transmitted to the winding unit on that side (such as the first winding unit 5) through the transmission path of "second gear 20-synchronous gear 17-first gear 16", while the synchronous gear 17 on the other side disengages from the first gear 16, realizing single-station power input. When the mounting frame 8 slides to switch the station, the push unit drives the synchronous gear 17 to slide in the opposite direction, so that the synchronous gear 17 on the other side meshes with the first gear 16, completing the switching of the power transmission path. Its advantages lie in the fact that the mechanical switching of the gear meshing enables independent power control of the dual winding units, and the station switching can be completed without stopping the machine, ensuring continuous operation of the winding machine. At the same time, the gear transmission structure has high precision and stability, which can accurately match the winding tension requirements. Furthermore, the sliding control of the push unit is easy to link with the displacement of the mounting frame, forming an automated power switching system, which improves winding efficiency and equipment reliability.

[0030] In a preferred embodiment, any of the aforementioned driving units includes two electromagnets 18, which are respectively disposed on opposite sides of the first gear 16 and the second gear 20; wherein the aforementioned synchronizing gear 17 is a permanent magnet, and its two ends are N pole and S pole, respectively.

[0031] In the above embodiment, when the electromagnets 18 on both sides are alternately energized, the generated alternating magnetic field forms a repulsive or attractive force with the N / S poles of the permanent magnet synchronous gear 17, pushing the synchronous gear 17 to slide rapidly on the second gear 20, thereby achieving engagement or disengagement with the first gear 16. This non-contact drive avoids mechanical wear. At the same time, the magnitude of the electromagnetic force can be precisely adjusted by the current to ensure that the sliding displacement and engagement depth of the synchronous gear 17 are precisely controllable.

[0032] In a preferred embodiment, the power shaft 19 is fixedly sleeved with a first flywheel 14, and the output shaft of the first drive motor 9 is provided with a second flywheel 15. The first flywheel 14 and the second flywheel 15 are driven by an annular belt 13.

[0033] In the above embodiments, the transmission combination of the first flywheel 14, the second flywheel 15 and the annular belt 13 can buffer the speed fluctuations and vibrations between the power shaft 19 and the first drive motor 9, thereby achieving smooth power transmission.

[0034] In a preferred embodiment, the mounting bracket 8 is provided with a rack 11, which meshes with a drive gear 10; wherein, the processing platform 1 is provided with a second drive motor 12, which is connected to the drive gear 10 in a transmission manner.

[0035] In the above embodiment, the mounting frame 8 is driven by the second drive motor 12 on the processing platform 1 through the meshing transmission of the rack and pinion 11 and the drive gear 10. Its advantage lies in achieving stable and precise linear displacement of the mounting frame 8 on the processing platform 1. The rack and pinion transmission structure has the characteristics of high rigidity and low backlash, ensuring that the mounting frame 8 can quickly and accurately switch between the first and second positions, allowing the first winding unit 5 and the second winding unit 6 to accurately engage with the discharge end of the traction unit. Simultaneously, this transmission method has high power transmission efficiency and can withstand large loads, ensuring smooth movement of the mounting frame 8 when equipped with dual winding units. Furthermore, by controlling the speed and direction of the second drive motor 12, the moving speed and displacement of the mounting frame 8 can be flexibly adjusted, facilitating coordinated work with other components of the winding machine, effectively improving the automation and reliability of the dual-station switching, thereby increasing the overall efficiency of PET plastic strapping winding.

[0036] In a preferred embodiment, the processing platform 1 is rotatably provided with a connecting frame 3, and the free end of the connecting frame 3 is provided with a pressure roller 7 for adaptation to the first winding unit 5 or the second winding unit 6.

[0037] In the above embodiment, a rotatable connecting frame 3 is provided on the processing platform 1 and a pressure roller 7 is installed at its free end. This design can be flexibly adapted to the first winding unit 5 or the second winding unit 6.

[0038] As a preferred embodiment, a torsion spring 4 is provided at the rotatable connection between the connecting frame 3 and the processing platform 1.

[0039] In the above embodiment, a torsion spring 4 is provided at the rotatable connection between the connecting frame 3 and the processing platform 1. The elastic deformation of the torsion spring 4 can be used to automatically adjust the pressure between the pressure roller 7 and the winding unit, compensate for pressure fluctuations caused by changes in the diameter of the packing roll or the operation of the equipment, ensure stable winding tension of the packing tape, reduce wear caused by rigid mechanical contact, and improve the reliability of equipment operation.

[0040] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0041] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A PET plastic steel strapping rewinding machine, characterized in that, include: Processing platform (1); The traction unit includes a plurality of traction rollers (2) that are engaged in traction, and any one of the traction rollers (2) is rotatably mounted on the processing platform (1); as well as The winding assembly includes a mounting frame (8), a first winding unit (5), a second winding unit (6), and a power structure. The mounting frame (8) is slidably mounted on the processing platform (1). The first winding unit (5) and the second winding unit (6) are both mounted on the mounting frame (8). The power structure is mounted on the mounting frame (8) and is used to drive the first winding unit (5) or the second winding unit (6) to rotate. The mounting frame (8) has a first position and a second position on the processing platform (1). When the mounting frame (8) is in the first position, the first winding unit (5) is configured to receive PET plastic steel strapping from the discharge end of the traction unit. When the mounting frame (8) is in the second position, the second winding unit (6) is configured to receive PET plastic steel strapping from the discharge end of the traction unit.

2. The PET plastic steel strapping rewinding machine according to claim 1, characterized in that, The power structure includes: The power shaft (19) is rotatably mounted on the mounting bracket (8); Two first gears (16) are rotatably fitted onto both ends of the power shaft (19); Among them, the two first gears (16) are respectively connected to the first winding unit (5) and the second winding unit (6); The two second gears (20) are fixed on the power shaft (19) and are respectively spaced apart from the two first gears (16); Two synchronizing gears (17) are slidably sleeved on two second gears (20) respectively, and are configured to mesh with the corresponding first gears (16); Two driving units are used to drive the sliding of the two synchronous gears (17); The first drive motor (9) is used to drive the power shaft (19) to rotate.

3. A PET plastic steel strapping rewinding machine according to claim 2, characterized in that, Each of the aforementioned driving units includes two electromagnets (18), which are respectively disposed on opposite sides of the first gear (16) and the second gear (20); The synchronous gear (17) is a permanent magnet, and its two ends are N pole and S pole, respectively.

4. A PET plastic steel strapping rewinding machine according to claim 3, characterized in that, The power shaft (19) is fixedly sleeved with a first flywheel (14), and the output shaft of the first drive motor (9) is provided with a second flywheel (15). The first flywheel (14) and the second flywheel (15) are driven by an annular belt (13).

5. A PET plastic steel strapping rewinding machine according to claim 1, characterized in that, The mounting bracket (8) is provided with a rack (11), and the rack (11) meshes with a drive gear (10); The processing platform (1) is equipped with a second drive motor (12) and is connected to the drive gear (10) for transmission.

6. A PET plastic steel strapping rewinding machine according to claim 5, characterized in that, The processing platform (1) is rotatably equipped with a connecting frame (3), and the free end of the connecting frame (3) is equipped with a pressing roller (7) for adapting to the first winding unit (5) or the second winding unit (6).

7. A PET plastic steel strapping rewinding machine according to claim 6, characterized in that, A torsion spring (4) is provided at the rotatable connection between the connecting frame (3) and the processing platform (1).

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