Wrapping mechanism

Abstract

The utility model discloses a wrapping mechanism which comprises a first shaft, a second shaft and a first rotating disc, the first shaft is provided with a first channel along the axis direction of the first shaft, and a wire core is arranged in the first channel in a penetrating manner; the second shaft and the first shaft are coaxial, the two ends of the first shaft extend out of the second shaft, the second shaft is connected outside the first shaft in a sleeved mode and can rotate along the axis of the second shaft, a second channel parallel to the first channel is formed in the second shaft, and the wrapping tape can penetrate through the second channel. The first rotating disc is fixedly connected with the end of the second shaft, a first guide roller assembly and a tensioning assembly are arranged on the first rotating disc, the wrapping tape penetrating out of the second channel is fixed to a wire core penetrating through the first channel through the tensioning assembly and the wire guide roller assembly, and the tensioning assembly is used for adjusting the moving speed of the wrapping tape. The wrapping mechanism is compact in structure, and wrapping tape winding is more uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable processing equipment field especially relates to a wrapping mechanism. BACKGROUND

[0002] Cable is usually composed of one or several twisted wires, when multiple wires are twisted to form a cable, each wire is insulated from each other and is twisted around the same axis, and each cable is wrapped with a highly insulated covering layer, and the wrapping machine is a mechanism for wrapping tapes such as mica tape, cotton paper tape, aluminum foil, and polyester film on the core wire by rotating the rotating disc. This process is closely related to the power performance, and the stability of the tension control in the wrapping process needs to be strictly controlled. If the surface of the wrapped tape is loose, it may cause poor wrapping effect of the outer sleeve, and if the wrapped tape is too tight, it may cause the wrapped tape to break. Therefore, a wrapping mechanism is needed to adjust the tension during wrapping. SUMMARY

[0003] To overcome the above-mentioned shortcomings, the utility model discloses a wrapping mechanism, which is compact in structure and uniform in tape winding.

[0004] To achieve the above-mentioned purposes, the utility model adopts the technical scheme of a wrapping mechanism, which comprises:

[0005] A first shaft is provided with a first channel along its axial direction, and a wire core is arranged in the first channel;

[0006] A second shaft is coaxial with the first shaft and extends out of the first shaft at both ends, and is sleeved on the outside of the first shaft and can rotate along its own axis, and a second channel parallel to the first channel is formed in the second shaft, and the second channel is used for passing the tape;

[0007] A first rotating disc is fixedly connected to the end of the second shaft, and a first guide roller assembly and a tensioning assembly are arranged on the first rotating disc, the tape passing out of the second channel passes through the tensioning assembly and the wire roller assembly and is fixed on the wire core passing through the first channel, and the tensioning assembly is used for adjusting the moving speed of the tape.

[0008] The utility model has the advantages of:

[0009] The coaxial and sleeved first shaft and second shaft can realize the winding of the tape on the wire core by rotating each other, and at the same time, this structure reduces the length of the wrapping mechanism in the axial direction, is more compact in structure, and occupies less area.

[0010] The tensioning assembly is capable of rotating synchronously with the first rotating disc and adjusting the moving speed of the wrapping tape, and the wrapping tape coming out of the second channel can pass through the tensioning assembly to adjust the speed, so that the wrapping tape between the tensioning assembly and the core is always in a tensioned state.

[0011] Further, the tensioning assembly comprises a driving wheel, a pressing wheel and a tensioning driving part, the driving wheel is rotationally connected with the first rotating disc and is capable of rotating along its own axis under the driving of the tensioning driving part, the pressing wheel is located on one side of the driving wheel and is parallel to the driving wheel, and the pressing wheel is used for pressing the wrapping tape passing between the driving wheel and the pressing wheel towards the driving wheel.

[0012] The driving wheel can drive the wrapping tape to move through the friction between the driving wheel and the wrapping tape, so that the wrapping tape moves at a constant speed. Meanwhile, because the pressing wheel is movable, on one hand, it is convenient for the wrapping tape to pass through, and on the other hand, when the rotating speed of the driving wheel cannot meet the requirement of the winding, the wrapping tape will swing the pressing wheel towards the side away from the driving wheel, so that the wrapping tape between the tensioning assembly and the core is always in a tensioned state.

[0013] Further, the tensioning assembly comprises an extrusion part, the extrusion part comprises a swing frame and an elastic member, the swing frame is pivoted to the first rotating disc through a hinge shaft, the pressing wheel is rotationally connected with the swing frame and swings synchronously with the swing frame, and the elastic member drives the swing frame to swing towards the driving wheel by using its elasticity. The swing frame is driven to swing towards the driving wheel by using the elastic member, and then the pressing wheel is pressed on the driving wheel.

[0014] Further, the elastic member is a tension spring, one end of the tension spring abuts against a fixed rod on the first rotating disc, and the other end abuts against one end of the swing frame away from the hinge shaft.

[0015] Further, the tensioning driving part comprises a tensioning driving member, a driving gear and a driven gear, the driving gear is sleeved on the second shaft and is coaxially arranged with the second shaft, the driving gear rotates under the driving of the tensioning driving member, and the driven gear is fixed with the driving wheel and is engaged with the driving gear. The tensioning driving part realizes that the driving wheel can rotate along its own axis while rotating synchronously with the first rotating disc through the gear structure.

[0016] Further, the first rotating disc is further provided with a counterweight assembly, the counterweight assembly comprises a counterweight part one and a counterweight part two corresponding to the tensioning assembly and the first guide roller assembly, the counterweight part one and the counterweight part two are respectively equal in weight to the tensioning assembly and the first guide roller assembly and are centrally symmetrical.

[0017] The first rotating disc is arranged with a configuration assembly, the gravity center of the first rotating disc is arranged on the axis of the first rotating disc, and the stability of the rotation of the first rotating disc is improved, and the winding of the wrapping tape is more uniform.

[0018] Further, the first shaft extending out of the first rotating disc is provided with a silk separating block, and a plurality of wire outlet holes are arranged side by side on the silk separating block and are in communication with the first channel. The silk separating block is used for arranging the wire core before winding.

[0019] Further, the winding mechanism further comprises a second rotating disc fixed at the other end of the second shaft, and the second rotating disc is provided with a second guide roller assembly, and the wrapping tape passes through the second guide roller assembly and enters the second channel. The second guide roller assembly is used for guiding the wrapping tape outside into the second channel.

[0020] Further, the second rotating disc and the first rotating disc are both provided with a clearance hole in communication with the second channel, the wrapping tape enters the second channel from the clearance hole on the second rotating disc, and the wrapping tape in the second channel passes out of the clearance hole on the first rotating disc and is wound on the wire core.

[0021] The second rotating disc is provided with a limiting assembly near the clearance hole, the limiting assembly forms a limiting channel for the wrapping tape to pass through, and the limiting channel can adjust the position of the wrapping tape and align the wrapping tape with the clearance hole of the second rotating disc.

[0022] Further, the winding mechanism further comprises a fixing frame, the second shaft passes through the fixing frame and is rotationally connected with the fixing frame, and the fixing frame is fixed with a winding driving member for driving the second shaft to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a perspective structural schematic view of an embodiment of the utility model;

[0024] Figure 2 It is another angle perspective structural schematic view of an embodiment of the utility model;

[0025] Figure 3 It is a sectional view of an embodiment of the utility model;

[0026] Figure 4 It is a side view of an embodiment of the utility model;

[0027] Figure 5 It is Figure 1 Enlarged view of A in the middle;

[0028] In the figure:

[0029] 1, first shaft; 11, first channel; 12, silk separating block;

[0030] 2. Second axis; 21. Second channel;

[0031] 3. First rotating disc;

[0032] 4. First guide roller assembly;

[0033] 5. Tensioning assembly; 51. Drive wheel; 52. Pressure wheel; 53. Tensioning drive unit; 531. Tensioning drive component; 532. Drive gear; 533. Driven gear; 54. Pressing unit; 541. Swing frame; 542. Elastic element; 543. Hinge shaft;

[0034] 61. Counterweight Part 1; 62. Counterweight Part 2;

[0035] 7. Second rotating disk; 71. Second guide roller assembly; 72. Limiting assembly;

[0036] 8. Fixing frame; 81. Wrapping drive component. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0038] This utility model discloses a wrapping mechanism for wrapping tape around an inductor core.

[0039] A wrapping mechanism, see appendix. Figure 1 and attached Figure 4 As shown, it includes a coaxial first shaft 1 and a second shaft 2. The second shaft 2 is sleeved outside the first shaft 1 and can rotate relative to the first shaft 1. The first shaft 1 is used to guide the wire core, and the second shaft 2 is used to guide the wrapping tape. When the second shaft 2 rotates relative to the first shaft 1, the wrapping tape can be wrapped around the wire core.

[0040] See appendix Figure 3 As shown, a first shaft 1 has a first channel 11 along its axial direction, and a wire core passes through the first channel 11. The wire core can move along the axis of the first channel 11 under the drive of a wire core drive component (not shown). Both ends of the first shaft 1 pass through a second shaft 2, and the length of the second shaft 2 is less than the length of the first shaft 1. A second channel 21 parallel to the first channel 11 is formed on the second shaft 2, through which the wrapping tape passes. The wrapping tape can move along the second channel 21 under the pull of the wire core. At the same time, because the wrapping tape can rotate synchronously around the first shaft 1 with the second shaft 2, the wrapping tape can be wound around the wire core in this process. The coaxial and sleeved first shaft 1 and second shaft 2 reduce the axial length of the wrapping mechanism, making the structure more compact and occupying less space.

[0041] One end of the second shaft 2 is fixed with a first rotating disc 3, and the first rotating disc 3 is fixed with a first guide roller assembly 4 for guiding the wrapping tape. The wrapping tape passing out of the second channel 21 is fixed on the core wire passing through the first channel 11 through a tensioning assembly 5 and a guide roller assembly, and at this time, one end of the wrapping tape is fixed. When the second shaft 2 and the first rotating disc 3 rotate, the wrapping tape will be wound on the core wire, and at the same time, because the core wire moves along its own axis, the wrapping tape will be rewound on different positions of the core wire.

[0042] In the above process, the moving speed of the wrapping tape is related to the rotating speed of the second shaft 2, but when the first rotating disc 3 rotates at a high speed, the wrapping tape will be tightened with inertia or wind disturbance, resulting in that the pitch of the wrapping tape around the wrapping result is unstable, and the pitch is large or small at different times, the wrapping is loose, and the stability of the core wire around the wrapping is obviously decreased. Therefore, the tensioning assembly 5 is arranged on the first rotating disc 3, the tensioning assembly 5 rotates synchronously with the first rotating disc 3, and the moving speed of the wrapping tape can be adjusted. At this time, the wrapping tape passing out of the second channel 21 can be adjusted in speed through the tensioning assembly 5, so that the wrapping tape between the tensioning assembly 5 and the core wire is always in a tensioning state.

[0043] Referring to FIG. 1, Figure 1 As shown in the drawings, the tensioning assembly 5 comprises a driving wheel 51, a pressing wheel 52 and a tensioning driving part 53. The driving wheel 51 is rotationally connected with the first rotating disc 3 and can rotate along its own axis under the driving of the tensioning driving part 53. The pressing wheel 52 is located on one side of the driving wheel 51 and is parallel to the driving wheel 51. The pressing wheel 52 is used for pressing the wrapping tape passing between the driving wheel 51 and the pressing wheel 52 towards the driving wheel 51. The driving wheel 51 can drive the wrapping tape to move through the friction between the driving wheel 51 and the wrapping tape, so that the wrapping tape moves at a constant speed. At the same time, because the pressing wheel 52 is movable, on one hand, it is convenient for the wrapping tape to pass through, and on the other hand, when the rotating speed of the driving wheel 51 cannot meet the requirements of the wrapping, the wrapping tape will swing the pressing wheel 52 towards the side away from the driving wheel 51, so that the wrapping tape between the tensioning assembly 5 and the core wire is always in a tensioning state.

[0044] The tensioning assembly 5 further comprises an extrusion part 54, which always gives the pressing wheel 52 a force for moving towards the driving wheel 51. Referring to FIG. 1, Figure 5 As shown in the drawings, the extrusion part 54 comprises a swing frame 541 and an elastic member 542. The swing frame 541 is pivotally connected with the first rotating disc 3 through a hinge shaft 543. The pressing wheel 52 is rotationally connected with the swing frame 541 and swings synchronously with the swing frame 541. The elastic member 542 drives the swing frame 541 to swing towards the driving wheel 51 by using its elasticity.

[0045] In this embodiment, the elastic member 542 is used to drive the swing frame 541 to swing towards the driving wheel 51, and then the pressing wheel 52 is pressed on the driving wheel 51.

[0046] In one embodiment, the elastic member 542 is a tension spring, one end of which abuts against the fixed rod on the first rotating disc, and the other end abuts against the end of the swing frame 541 away from the hinge shaft 543. The tension spring has a pre-tightening force, that is, when the pressing wheel 52 and the driving wheel 51 abut against each other, the tension spring is in a compressed state, and when the swing frame 541 swings towards the side away from the driving wheel 51, the tension spring is continuously compressed.

[0047] In one embodiment, referring to Figs. 1 and 2, Figure 2 and Figs. 3 and 4, Figure 3 the tensioning driving part 53 comprises a tensioning driving member 531, a driving gear 532 and a driven gear 533. The driving gear 532 is sleeved on the second shaft 2 and coaxially arranged with the second shaft 2. The driving gear 532 rotates under the driving of the tensioning driving member 531. The driven gear 533 is fixed with the driving wheel 51 and engaged with the driving gear 532.

[0048] The driving gear 532 is rotationally connected with the second shaft 2, and a rotation bearing is arranged between the two. The driving gear 532 does not rotate synchronously with the first rotating disc 3, but rotates along its own axis under the driving of the tensioning driving member 531. The driven gear 533 rotates synchronously with the first rotating disc 3, but is engaged with the driving gear 532. Therefore, the driven gear 533 can rotate relative to the first rotating disc 3. The driven gear 533 is coaxial with the driving wheel 51, thereby realizing that the driving wheel 51 can rotate along its own axis relative to the second rotating disc 7 while rotating synchronously with the second rotating disc 7.

[0049] The winding mechanism further comprises a fixed frame 8. The tensioning driving member 531 is fixed on the fixed frame 8. The tensioning driving member 531 is connected with the driving gear 532 through a first transmission toothed belt, and is used to drive the driving gear 532 to rotate. The driving gear 532 and the driven gear 533 are located on the same side of the first rotating disc 3. The tensioning assembly 5 and the first guide roller assembly 4 are located on the other side of the first rotating disc.

[0050] The second shaft 2 penetrates through the fixed frame 8 and is rotationally connected with the fixed frame 8. The fixed frame 8 is fixed with a winding driving member 81 which drives the second shaft 2 to rotate. The winding driving member 81 is connected with the second shaft 2 through a transmission assembly. In this embodiment, the transmission assembly is a second transmission belt and a transmission wheel.

[0051] Referring to Figs. 1 and 2, Figure 1 and Figs. 3 and 4, the first guide roller assembly 4 comprises a plurality of first guide rollers which are rotationally connected with the first rotating disc 3. The shapes of these first guide rollers are similar, but the directions of their axes are different. The wrapping tape changes direction through different first guide rollers, and is finally wound on the core.

[0052] Because the first guide roller assembly and tensioning assembly 5 have a certain weight, the center of gravity of the first rotating disk 3 is off-center. This causes the center of gravity of the first rotating disk 3 to be not on the axis when rotating, resulting in uneven wrapping of the tape. Therefore, the first rotating disk 3 is also equipped with a counterweight assembly, which can keep the center of gravity of the first rotating disk 3 on its axis, thereby improving the uniformity of tape wrapping.

[0053] The counterweight assembly includes a first counterweight part 61 and a second counterweight part 62 corresponding to the tensioning assembly 5 and the first guide roller assembly 4. The first counterweight part 61 and the tensioning assembly 5 have equal weights and are symmetrical about the center of the first rotating disk 3. The second counterweight part and the first guide roller assembly 4 have equal weights and are symmetrical about the center of the first rotating disk 3.

[0054] The wire core includes multiple guide wires. Before winding, the wire core needs to be tidied up. As shown in the attached figure, a wire separating block 12 is provided at the end of the first rotating disk 3 extending from the first shaft 1. The wire separating block 12 has multiple parallel exit holes that are connected to the first channel 11. In this embodiment, the wire core includes three guide wires, so there are three exit holes, and the three guide wires pass through the three exit holes respectively.

[0055] In one embodiment, to guide the external packing tape into the second channel, see Appendix Figure 2 As shown, the wrapping mechanism also includes a second rotating disk 7 fixed to the other end of the second shaft 2. A second guide roller assembly 71 is provided on the second rotating disk 7, and the wrapping tape is guided into the second channel 21 through the second guide roller assembly 71. The second guide roller assembly 71 is used to guide the external wrapping tape into the second channel 21. The second guide roller assembly 71 includes a plurality of second guide rollers rotatably connected to the second rotating disk 7. The second guide rollers rotate synchronously with the second rotating disk 7 and can rotate along their own axis under the drive of the wrapping tape.

[0056] In one embodiment, both the second rotating disk 7 and the first rotating disk 3 are provided with clearance holes that communicate with the second channel 21. The wrapping tape enters the second channel 21 through the clearance hole on the second rotating disk 7, and the wrapping tape in the second channel 21 then exits through the clearance hole on the first rotating disk 3 and is wound around the core.

[0057] See appendix Figure 2 As shown, the second rotating disk 7 is provided with a limiting component 72 near the clearance hole. The limiting component 72 forms a limiting channel for the bag strap to pass through. The limiting channel can adjust the position of the bag strap so that the bag strap is aligned with the clearance hole of the second rotating disk 7.

[0058] The specific working process of the embodiment is as follows: the core passes through the first channel 11, and the three guide wires of the core pass out from the three wire outlet holes respectively. One end of the wrapping tape enters the second channel 21 from the gap hole on the second rotating disc 7, and the wrapping tape in the second channel 21 passes out from the gap hole on the first rotating disc 3, passes through the tensioning assembly 5 and the first guide roller assembly 4, and is fixed on the core. After the core and the wrapping tape are both fixed, the winding driving member 81 drives the second shaft 2 to rotate, and the core driving member drives the core to rotate along the axis, and the wrapping tape is wound on the core. In this process, the tensioning driving member 531 drives the driving wheel 51 to rotate, and the driving wheel 51 adjusts the transmission speed of the wrapping tape during the winding process, so that the wrapping tape is wound more uniformly.

[0059] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A wrapping mechanism, characterized in that: include: A first shaft, wherein a first channel is provided along its axial direction, and a wire core is threaded through the first channel; The second shaft is coaxial with the first shaft and extends from both ends of the first shaft. The second shaft is sleeved on the outside of the first shaft and can rotate along its own axis. The second shaft has a second channel parallel to the first channel, through which the bag strap passes. A first rotating disk is fixedly connected to the end of the second shaft. A first guide roller assembly and a tensioning assembly are provided on the first rotating disk. The wrapping tape passing through the second channel is fixed to the wire core passing through the first channel by the tensioning assembly and the guide roller assembly. The tensioning assembly is used to adjust the moving speed of the wrapping tape.

2. The wrapping mechanism according to claim 1, characterized in that: The tensioning assembly includes a drive wheel, a pressure wheel, and a tensioning drive unit. The drive wheel is rotatably connected to the first rotating disk and can rotate along its own axis under the drive of the tensioning drive unit. The pressure wheel is located on one side of the drive wheel and is parallel to the drive wheel. The pressure wheel is used to press the strapping tape passing between the drive wheel and the pressure wheel toward the drive wheel.

3. The wrapping mechanism according to claim 2, characterized in that: The tensioning assembly includes a compression section, which includes a swing frame and an elastic element. The swing frame is pivotally connected to the first rotating disk via a hinge shaft. The pressure wheel is rotatably connected to the swing frame and swings synchronously with the swing frame. The elastic element uses its own elasticity to drive the swing frame to swing toward the drive wheel.

4. The wrapping mechanism according to claim 3, characterized in that: The elastic element is a tension spring, one end of which abuts against the fixed rod on the first rotating disk, and the other end abuts against the end of the swing frame away from the hinge axis.

5. The wrapping mechanism according to claim 2, characterized in that: The tensioning drive unit includes a tensioning drive component, a drive gear, and a driven gear. The drive gear is sleeved on the outside of the second shaft and is coaxially arranged with the second shaft. The drive gear rotates under the drive of the tensioning drive component. The driven gear is fixed to the drive gear and meshes with the drive gear.

6. The wrapping mechanism according to claim 1, characterized in that: The first rotating disk is also provided with a counterweight assembly, which includes a counterweight part one and a counterweight part two corresponding to the tensioning assembly and the first guide roller assembly. The counterweight part one and the counterweight part two are equal in weight to the tensioning assembly and the first guide roller assembly and are centrally symmetrical.

7. The wrapping mechanism according to claim 1, characterized in that: The first shaft extends from the end of the first rotating disk and is provided with a wire splitting block. The wire splitting block has multiple wire outlet holes arranged side by side and communicating with the first channel.

8. The wrapping mechanism according to any one of claims 1-7, characterized in that: The wrapping mechanism also includes a second rotating disk fixed to the other end of the second shaft. A second guide roller assembly is provided on the second rotating disk, and the wrapping tape is guided into the second channel through the second guide roller assembly.

9. The wrapping mechanism according to claim 8, characterized in that... Both the second rotating disk and the first rotating disk are provided with clearance holes that communicate with the second channel. The second rotating disk is provided with a limit component near the clearance hole, and the limit component forms a limit channel for the bag strap to pass through.

10. The wrapping mechanism according to claim 1, characterized in that: The wrapping mechanism further includes a fixed frame, the second shaft passes through the fixed frame and is rotatably connected to the fixed frame, and a wrapping drive component for driving the second shaft to rotate is fixed on the fixed frame.

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