A PET strapping rewinder

Abstract

This utility model discloses a PET strapping rewinding machine, relating to the field of strapping. It includes a worktable, a rewinding assembly and a tensioning assembly mounted on the worktable. The rewinding assembly includes a support frame, a drive wheel, multiple rewinding brackets, and multiple rewinding columns. The support frame includes a vertical frame and a horizontal bar, with the drive wheel rotatably mounted on the vertical frame. Each rewinding bracket includes a collar and a connecting rod. The collar is movably fitted onto the horizontal bar and fixed by a locking device. One end of the connecting rod is fixedly connected to one side of the collar, and the other end is connected to a rewinding column. The rewinding column is detachably fitted onto the connecting rod, with its cylindrical surface abutting the drive wheel. The tensioning assembly includes a track, multiple sets of adjustable lifting brackets, and multiple tensioning rollers. The track is horizontally arranged along the worktable surface. The multiple adjustable lifting brackets are slidably mounted on the track and locked by locking devices. The tensioning rollers are rotatably mounted on the top of the adjustable lifting brackets. It can adjust the rewinding position and tension as needed, improving rewinding adaptability and stability.

Description

Technical Field

[0001] This utility model relates to the field of packing straps, and more specifically, to a PET packing strap rewinding machine. Background Technology

[0002] PET strapping is a type of polyester strapping made from PET as the main raw material through extrusion and unidirectional stretching. It is the most popular new environmentally friendly packaging material to replace steel strapping, steel wire, and heavy-duty PP strapping. A PET strapping production line is an integrated production line for producing and winding strapping. When winding and rewinding the produced strapping, a PET strapping winding machine is often used.

[0003] Patent publication number CN218261037U relates to a PET strapping rewinding machine. The key technical feature of this solution is that it can rewind a larger number of rewinding posts at once, reducing the rewinding pressure on the PET strapping. However, in this solution, the spacing between the multiple rewinding posts cannot be adjusted, making it unsuitable for rewinding strapping of different thicknesses and widths. Furthermore, the rewinding tension cannot be adjusted, resulting in poor rewinding stability. Utility Model Content

[0004] The purpose of this invention is to provide a PET strapping rewinding machine that can adjust the rewinding position and tension as needed, thereby improving the rewinding adaptability and stability.

[0005] The embodiments of this utility model are implemented as follows:

[0006] This application provides a PET strapping rewinding machine, including a worktable, a rewinding assembly and a tensioning assembly disposed on the worktable.

[0007] The winding assembly includes a support frame, a drive wheel, multiple winding brackets, and multiple winding columns. The support frame includes a vertical frame and a crossbar, and the drive wheel is rotatably mounted on the vertical frame.

[0008] The winding bracket includes a collar and a connecting rod. The collar is movably sleeved on the crossbar and fixed by a locking member. One end of the connecting rod is fixedly connected to one side of the collar, and the other end of the connecting rod is connected to the winding post. The winding post is detachably sleeved on the connecting rod, and the cylindrical surface of the winding post is in contact with the drive wheel.

[0009] The tensioning assembly includes a track, multiple sets of adjustable lifting brackets, and multiple tensioning rollers. The track is arranged horizontally along the surface of the workbench. The multiple adjustable lifting brackets are slidably arranged on the track and locked by locking components, and each of the multiple adjustable lifting brackets corresponds to one of the multiple winding brackets. The tensioning rollers are rotatably arranged on the top of the adjustable lifting brackets.

[0010] Furthermore, based on the aforementioned scheme, the upright frame includes two opposing frame plates, the drive wheel is rotatably disposed between the two frame plates, and one end of the drive wheel is driven by a drive component; the crossbar is staggered and connected between the two frame plates.

[0011] Furthermore, based on the aforementioned scheme, the collar is slidably sleeved on the crossbar, and the collar has a through hole on its opposite sidewall; the sidewall of the crossbar has a strip-shaped hole along its length.

[0012] The locking component includes a locking rod that passes through the through hole and the strip hole from top to bottom; a first arc-shaped locking plate is provided at the top of the locking rod, and a second arc-shaped locking plate is threaded to the bottom of the locking rod, with the two arc-shaped locking plates respectively fitting against the crossbar.

[0013] Furthermore, based on the aforementioned scheme, the top of the locking rod extends upward and is connected to a handle.

[0014] Furthermore, based on the aforementioned scheme, both the first arc-shaped plate and the second arc-shaped plate are made of silicone rubber; the second arc-shaped locking plate is threaded onto the locking rod via a threaded sleeve.

[0015] Furthermore, based on the aforementioned solution, the bottom of the adjustable lifting frame is slidably disposed on the track, and a connecting ear is provided at its bottom, which is locked to the table surface of the workbench by bolts.

[0016] Furthermore, based on the aforementioned scheme, the adjustable lifting frame includes a threaded adjusting rod.

[0017] Furthermore, based on the aforementioned scheme, the tensioning roller includes a fixed shaft wheel and a movable shaft wheel, wherein the movable shaft wheel is disposed opposite to the fixed shaft wheel and its shaft thread passes through the shaft of the fixed shaft wheel.

[0018] Furthermore, based on the aforementioned scheme, the winding column includes a fixed rod, a rotating wheel, a winding wheel, and a fixed post; one end of the fixed rod is fixedly connected to one end of the connecting rod, and the other end is provided with a limit plate; the rotating wheel is movably sleeved on the fixed rod; the fixed post is movably sleeved on the fixed rod and located on the side of the rotating wheel away from the connecting rod, and the end of the fixed post away from the rotating wheel is connected to the fixed rod by bolts; the fixed post has a polygonal shape on its exterior; the winding wheel is movably sleeved on the fixed post.

[0019] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0020] This application utilizes the movable setting of the collar on the crossbar to freely adjust the position of the winding bracket according to actual needs, thereby changing the winding width of the winding column. This adapts to the winding requirements of different specifications of PET strapping, improving the versatility of the equipment. The winding column is detachably sleeved on the connecting rod, allowing for convenient and quick removal of the wound strapping after winding, greatly shortening changeover time and effectively improving production efficiency. The contact between the cylindrical surface of the winding column and the drive wheel ensures the stability of power transmission, enabling the winding column to rotate stably with the drive wheel, thus ensuring a smooth strapping winding process and preventing uneven winding. The adjustable lifting bracket can slide on the track, allowing for flexible adjustment of the tension position to adapt to different winding positions. Simultaneously, by adjusting the height of the adjustable lifting bracket, the tension force of the tension roller on the strapping can be changed, ensuring moderate strapping winding tightness and improving winding quality. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a top view of the PET strapping rewinder according to an embodiment of the present invention;

[0023] Figure 2 This is a side view of a PET strapping rewinder according to an embodiment of the present invention;

[0024] Figure 3 This is a side sectional view of the winding bracket according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the winding column in an embodiment of this utility model.

[0026] Icons: 1-Workbench, 2-Drive wheel, 3-Take-up column, 4-Upright frame, 5-Horizontal bar, 6-Lock, 7-Connecting rod, 8-Rail, 9-Adjustable lifting bracket, 10-Tension roller, 11-Drive component, 12-Locking rod, 13-First arc-shaped locking plate, 14-Second arc-shaped locking plate, 15-Handle, 16-Threaded sleeve, 17-Fixing rod, 18-Rotating wheel, 19-Take-up wheel, 20-Fixing column, 21-Limiting plate. Detailed Implementation

[0027] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0028] Please refer to Figures 1-4The image shows a schematic diagram of the overall structure of a PET strapping rewinder.

[0029] This embodiment provides a PET strapping rewinding machine, including a worktable 1, a rewinding assembly and a tensioning assembly disposed on the worktable 1.

[0030] The winding assembly includes a support frame, a drive wheel 2, multiple winding brackets and multiple winding columns 3. The support frame includes a vertical frame 4 and a crossbar 5. The drive wheel 2 is rotatably mounted on the vertical frame 4.

[0031] The winding bracket includes a collar 6 and a connecting rod 7. The collar 6 is movably sleeved on the crossbar 5 and fixed by a locking device. One end of the connecting rod 7 is fixedly connected to one side of the collar 6, and the other end of the connecting rod 7 is connected to the winding post 3. The winding post 3 is detachably sleeved on the connecting rod 7, and the cylindrical surface of the winding post 3 is in contact with the drive wheel 2.

[0032] The tensioning assembly includes a track 8, multiple adjustable lifting brackets 9, and multiple tensioning rollers 10. The track 8 is arranged horizontally along the surface of the workbench 1. The multiple adjustable lifting brackets 9 are slidably arranged on the track 8 and locked by locking components, and the multiple adjustable lifting brackets 9 correspond one-to-one with the multiple winding brackets. The tensioning rollers 10 are rotatably arranged on the top of the adjustable lifting brackets 9.

[0033] The following will further describe a PET strapping rewinding machine according to this exemplary embodiment.

[0034] In some embodiments, the support frame includes an upright frame 4 and a crossbar 5, with a drive wheel 2 rotatably mounted on the upright frame 4. The drive wheel 2 provides power for the winding process, driving the winding column 3 to rotate and achieve the winding of the packing strap through its contact with the winding column 3. The winding bracket includes a collar 6 and a connecting rod 7. The collar 6 is movably fitted onto the crossbar 5 and fixed by a locking device; one end of the connecting rod 7 is fixedly connected to one side of the collar 6, and the other end of the connecting rod 7 is connected to the winding column 3; the winding column 3 is detachably fitted onto the connecting rod 7, and the cylindrical surface of the winding column 3 is in contact with the drive wheel 2. By movably setting the collar 6 on the crossbar 5, the position of the winding bracket can be adjusted as needed, thereby changing the winding width to adapt to the winding requirements of different specifications of packing straps; the detachable mounting of the winding column 3 onto the connecting rod 7 facilitates the removal of the wound packing strap after winding, improving production efficiency; the contact between the winding column 3 and the drive wheel 2 ensures the stability of power transmission, making the winding process smoother.

[0035] The aforementioned tensioning assembly includes a track 8, multiple adjustable lifting brackets 9, and multiple tension rollers 10. The track 8 is arranged horizontally along the surface of the workbench 1. The multiple adjustable lifting brackets 9 are slidably mounted on the track 8 and locked in place by locking components, and each of the multiple adjustable lifting brackets 9 corresponds one-to-one with a multiple winding bracket. The tension rollers 10 are rotatably mounted on top of the adjustable lifting brackets 9. The adjustable lifting brackets 9 can slide on the track 8 to adjust the tension position and adapt to different winding positions. By adjusting the height of the adjustable lifting brackets 9, the tension force of the tension rollers 10 on the strapping can be changed, ensuring that the tension of the strapping is moderate and improving the winding quality. The rotatable tension rollers 10 reduce friction between the strapping and the tension rollers 10, preventing wear on the strapping.

[0036] In a preferred embodiment, the aforementioned support frame 4 includes two opposing frame plates, with a drive wheel 2 rotatably positioned between the two frame plates, and one end of the drive wheel 2 driven by a drive member 11; a crossbar 5 is staggered between the two frame plates. The two opposing frame plates provide stable support for the drive wheel 2; the drive member 11 drives the drive wheel 2 to rotate, ensuring stable power output; the staggered connection of the crossbar 5 increases the structural stability and provides reasonable space for the installation of the winding bracket. The aforementioned drive member 11 can be a drive motor.

[0037] In a preferred embodiment, the collar 6 is slidably fitted onto the crossbar 5, and the collar 6 has through holes on its opposite sidewalls; the crossbar 5 has strip holes along its length on its sidewalls; the locking element includes a locking rod 12, which passes through the through holes and strip holes from top to bottom; a first arc-shaped locking plate 13 is provided at the top of the locking rod 12, and a second arc-shaped locking plate 14 is threadedly connected to the bottom of the locking rod 12, with the two arc-shaped locking plates respectively fitting against the crossbar 5. The collar 6 slides on the crossbar 5 for easy position adjustment. Through the cooperation of the locking rod 12, the first arc-shaped locking plate 13, and the second arc-shaped locking plate 14, the collar 6 can be firmly fixed to the crossbar 5, ensuring the stability of the winding bracket during winding; and the threaded connection of the second arc-shaped locking plate 14 allows it to be disassembled, thereby allowing the locking rod 12 to be pulled out and the angle of the connecting rod 7 to be rotated and adjusted. For example, after winding is complete, it can be lifted upwards to disassemble the winding column 3. The slotted hole allows the locking rod 12 to move along the collar 6 on the crossbar 5, meeting the fixing requirements at different positions.

[0038] As a preferred embodiment, the top of the locking rod 12 extends upward and is connected to a handle 15. The handle 15 makes it convenient for the operator to slide or pull out the locking rod 12 and the rotating linkage 7, making the operation more convenient.

[0039] In a preferred embodiment, both the first and second arc-shaped plates are made of silicone rubber; the second arc-shaped locking plate 14 is threaded onto the locking rod 12 via a threaded sleeve 16. Silicone rubber has good elasticity and friction, allowing the arc-shaped locking plate to fit more tightly with the crossbar 5, resulting in better fixation; simultaneously, the silicone rubber will not damage the surface of the crossbar 5; the second arc-shaped locking plate 14 is connected to the locking rod 12 via the threaded sleeve 16, facilitating adjustment of the position of the second arc-shaped locking plate 14 and ensuring a secure locking effect.

[0040] In a preferred embodiment, the bottom of the adjustable lifting frame is slidably mounted on the track 8, and a connecting lug is provided at its bottom. The connecting lug is locked to the table surface of the workbench 1 by bolts. The cooperation of the connecting lug and the bolts further strengthens the fixation of the adjustable lifting frame on the track 8, preventing the adjustable lifting frame from moving during the tensioning process and ensuring the stability of the tensioning effect.

[0041] In a preferred embodiment, the adjustable lifting frame includes a threaded adjusting rod. By rotating the threaded adjusting rod, the height of the adjustable lifting frame can be conveniently and precisely adjusted, thereby accurately controlling the tension of the tension roller 10 on the strapping tape and meeting the winding tension requirements of different strapping tapes.

[0042] In a preferred embodiment, the tension roller 10 includes a fixed shaft wheel and a movable shaft wheel. The movable shaft wheel is disposed opposite to the fixed shaft wheel, and its shaft thread passes through the shaft of the fixed shaft wheel. By rotating the movable shaft wheel, the distance between the fixed shaft wheel and the movable shaft wheel can be adjusted to adapt to the tensioning requirements of packing straps of different widths, thereby improving the versatility of the tension roller 10.

[0043] In a preferred embodiment, the aforementioned take-up column 3 includes a fixed rod 17, a rotating wheel 18, a take-up wheel 19, and a fixed post 20; one end of the fixed rod 17 is fixedly connected to one end of the connecting rod 7, and the other end is provided with a limiting plate 21; the rotating wheel 18 is movably sleeved on the fixed rod 17; the fixed post 20 is movably sleeved on the fixed rod 17 and located on the side of the rotating wheel 18 away from the connecting rod 7, and the end of the fixed post 20 away from the rotating wheel 18 is connected to the fixed rod 17 by bolts; the fixed post 20 has a polygonal shape on its exterior; the take-up wheel 19 is movably sleeved on the fixed post 20. The rotating wheel 18 is in contact with the drive wheel 2 and rotates under the drive of the drive wheel 2, thereby driving the take-up wheel 19 to rotate to achieve winding; the fixed column 20 has a polygonal shape on the outside, so that the take-up wheel 19 can rotate with the fixed column 20 to ensure the stability of winding; after winding is completed, the fixed column 20 and the take-up wheel 19 can be removed by loosening the bolts, which is simple to operate and improves the efficiency of replacing the take-up wheel 19; the setting of the limit plate 21 prevents the rotating wheel 18 and the fixed column 20 from falling off the fixed rod 17.

[0044] The working principle of this application embodiment:

[0045] First, before the winding operation, the equipment is adjusted according to the specifications (such as width) of the PET strapping to be wound. For the winding assembly, a winding post 3 of appropriate width is selected according to the width of the strapping. By loosening the locking piece, the collar 6 of the winding bracket slides on the crossbar 5. After adjusting the winding bracket to the appropriate position, the collar 6 is fixed to the crossbar 5 by the locking piece, thereby adjusting multiple winding posts 3 to the appropriate position. At the same time, for the tensioning assembly, since multiple adjustable lifting brackets 9 correspond one-to-one with multiple winding brackets, the locking piece is loosened, allowing the adjustable lifting bracket 9 to slide on the track 8. It is adjusted to a position that matches the corresponding winding bracket. After adjustment, the adjustable lifting bracket 9 is locked to the track 8 by the locking piece. In addition, according to the required tension of the strapping, the height of the adjustable lifting bracket 9 is adjusted so that the tensioning roller 10 set at its top reaches the appropriate height to generate appropriate tension force on the strapping.

[0046] During the actual winding process, one end of the PET strapping is wrapped around the tension roller 10 of the corresponding tensioning assembly and then fixed to the winding post 3 of the winding assembly. The drive unit drives the drive wheel 2 in the winding assembly to rotate. Since the cylindrical surface of the winding post 3 is in contact with the drive wheel 2, the rotation of the drive wheel 2 will drive the winding post 3 to rotate synchronously under the action of friction. As the winding post 3 rotates, the PET strapping is neatly wound around the winding post 3 under the tension of the tension roller 10. During the winding process, the tension roller 10 rotates with the movement of the strapping, changing sliding friction into rolling friction and reducing damage to the strapping; at the same time, the adjustable lifting bracket 9 is stabilized in the set position to ensure the stability of the tension and ensure that the strapping is wound with appropriate tension.

[0047] When the packing tape on the winding column 3 reaches the preset amount, the drive device is stopped, the connection between the winding column 3 and the connecting rod 7 is released, and the winding column 3 with the packed tape is removed from the connecting rod 7, completing one winding operation. Afterwards, a new winding column 3 can be replaced, and the next winding operation can be performed following the same steps.

[0048] 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.

[0049] 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 strapping band winder characterized by, Includes a worktable, a winding assembly and a tensioning assembly disposed on the worktable. The winding assembly includes a support frame, a drive wheel, multiple winding brackets, and multiple winding columns. The support frame includes a vertical frame and a crossbar, and the drive wheel is rotatably mounted on the vertical frame. The winding bracket includes a collar and a connecting rod. The collar is movably sleeved on the crossbar and fixed by a locking member. One end of the connecting rod is fixedly connected to one side of the collar, and the other end of the connecting rod is connected to the winding post. The winding post is detachably sleeved on the connecting rod, and the cylindrical surface of the winding post is in contact with the drive wheel. The tensioning assembly includes a track, multiple sets of adjustable lifting brackets, and multiple tensioning rollers. The track is arranged horizontally along the surface of the workbench. The multiple adjustable lifting brackets are slidably arranged on the track and locked by locking components, and each of the multiple adjustable lifting brackets corresponds to one of the multiple winding brackets. The tensioning rollers are rotatably arranged on the top of the adjustable lifting brackets.

2. The PET strapping band winder of claim 1, wherein, The frame includes two opposing frame plates, a drive wheel is rotatably disposed between the two frame plates, and one end of the drive wheel is driven by a drive component; the crossbar is staggered between the two frame plates.

3. The PET strapping rewinder according to claim 2, characterized in that, The collar is slidably sleeved on the crossbar, and the collar has a through hole on its opposite side wall; the side wall of the crossbar has a strip-shaped hole along its length. The locking component includes a locking rod that passes through the through hole and the strip hole from top to bottom; a first arc-shaped locking plate is provided at the top of the locking rod, and a second arc-shaped locking plate is threaded to the bottom of the locking rod, with the two arc-shaped locking plates respectively fitting against the crossbar.

4. The PET strapping rewinder according to claim 3, characterized in that, The top of the locking bar extends upward and is connected to a handle.

5. The PET strapping rewinder according to claim 4, characterized in that, Both the first arc-shaped locking plate and the second arc-shaped locking plate are made of silicone rubber; the second arc-shaped locking plate is threaded onto the locking rod via a threaded sleeve.

6. The PET strapping rewinder according to claim 1, characterized in that, The bottom of the adjustable lifting bracket is slidably mounted on the track, and a connecting lug is provided at its bottom. The connecting lug is locked to the table surface of the workbench by bolts.

7. The PET strapping rewinder according to claim 1, characterized in that, The adjustable lifting bracket includes a threaded adjustment rod.

8. The PET strapping rewinder according to claim 1, characterized in that, The tensioning roller includes a fixed shaft wheel and a movable shaft wheel. The movable shaft wheel is arranged opposite to the fixed shaft wheel and its shaft thread passes through the shaft of the fixed shaft wheel.

9. The PET strapping rewinder according to any one of claims 1-7, characterized in that, The winding column includes a fixed rod, a rotating wheel, a winding wheel, and a fixed post; one end of the fixed rod is fixedly connected to one end of the connecting rod, and the other end is provided with a limit plate; the rotating wheel is movably sleeved on the fixed rod; the fixed post is movably sleeved on the fixed rod and located on the side of the rotating wheel away from the connecting rod, and the end of the fixed post away from the rotating wheel is connected to the fixed rod by bolts; the fixed post has a polygonal shape; the winding wheel is movably sleeved on the fixed post.

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