Concentric wrapping machine for cable processing

Abstract

The invention discloses a concentric wrapping machine for cable processing, and relates to the technical field of wrapping machines, the concentric wrapping machine comprises a wrapping assembly arranged in a machine tool, and the wrapping assembly is provided with a tensioning mechanism; the tensioning mechanism comprises a third sleeve capable of rotating, a connecting ring is arranged on the third sleeve, the connecting ring is connected with a swing arm through a connecting shaft, and a roller shaft is arranged on the swing arm and used for adjusting the tension of the wrapping tape. In the invention, in the process of automatically wrapping a cable, the tension of a wrapping tape can be dynamically adjusted, and during wrapping, once the tension of the wrapping tape does not accord with a preset value, a magnetic powder brake can quickly adjust the output torque of a direct current motor, so that a third sleeve generates acceleration, a swing arm and a roll shaft are driven to rotate, and the angle of the roll shaft is changed; therefore, the tension of the wrapping tape is adjusted in real time, and the problem that the wrapping tape is wound unevenly and loosely due to unstable tension is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of wrapping machines, in particular to a concentric wrapping machine for cable processing. Background Art

[0002] In the cable processing and wrapping process, the problem of uneven and loose wrapping is more prominent, which seriously affects the quality of the cable. There are various factors that cause this problem, and the characteristics of the cable itself are the key. The diameters of cables of different specifications vary greatly. The wrapping tape is easy to slide when wrapping thin cables, and it is difficult for the wrapping tape to fit tightly on thick cables due to the large curvature of the surface. The quality of the wrapping tape is also crucial. Uneven materials and thicknesses will cause uneven force on the wrapping. In addition, the performance of the wrapping equipment is insufficient. For example, the tension control is unstable, and the tension cannot be accurately adjusted in real time during the wrapping process, resulting in the wrapping tape being tight and loose at times; the low precision of the guide mechanism will cause the wrapping tape to deviate from the path. These will cause uneven and loose wrapping.

[0003] During the wrapping process, traditional wrapping machines have limited ability to adjust the tape tension, and are mostly static adjustments or simple adjustments at specific stages. They are unable to make real-time dynamic adjustments based on the actual tension changes of the tape. This results in unstable tape tension during wrapping, and problems such as uneven winding and looseness are very likely to occur, which seriously affects the quality and stability of cable wrapping, increases the defective rate, and increases production costs. Summary of the invention

[0004] In order to solve the problems raised by the above background technology, the present invention proposes a concentric wrapping machine for cable processing.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A concentric wrapping machine for cable processing, comprising a wrapping assembly arranged inside a machine tool, wherein a tensioning mechanism is arranged on the wrapping assembly;

[0007] The tensioning mechanism comprises a rotatable No. 3 sleeve, on which a connecting ring is arranged, and the connecting ring is connected to a swing arm via a connecting shaft, and on which a roller is arranged for adjusting the tension of the strap.

[0008] As a further preferred embodiment of the technical solution: the tensioning mechanism further comprises a DC motor arranged inside the machine tool, the output end of the DC motor is transmission-connected to the No. 3 sleeve via a No. 4 transmission assembly, and the DC motor is provided with a magnetic powder brake for adjusting the transmitted torque;

[0009] And the output end of the DC motor is connected to the No. 2 encoder through the No. 5 transmission component.

[0010] As a further preference of this technical solution: The winding assembly includes a rotatable second sleeve, a rotating disk is arranged on the second sleeve, the rotating disk is connected with an annular frame through a fixing rod, and a first guiding roller which is used in pairs and connected together through a connecting piece is arranged between the rotating disk and the annular frame;

[0011] The winding assembly further includes a first encoder, and the first encoder is connected with the second sleeve through a third transmission assembly to realize accurate measurement and feedback of the rotational movement of the second sleeve.

[0012] As a further preference of this technical solution: A feeding mechanism for automatically conveying the wrapping tape is further arranged inside the machine tool;

[0013] The feeding mechanism includes a rotatable first sleeve, and a placing rod is arranged on the first sleeve for placing the wrapping tape.

[0014] As a further preference of this technical solution: A pre-tightening mechanism is arranged on the rotating disk;

[0015] The pre-tightening mechanism includes a rotating shaft rotatably arranged on the rotating disk through a rotating shaft, and a slider is arranged at the output end of the rotating shaft;

[0016] And a sliding groove for the slider to slide is arranged on the swing arm.

[0017] As a further preference of this technical solution: Two arc-shaped grooves are symmetrically arranged on the rotating disk;

[0018] And two connecting shafts are correspondingly arranged, and the two connecting shafts correspondingly penetrate through the inner sides of the two arc-shaped grooves.

[0019] As a further preference of this technical solution: A first connecting frame is arranged on the annular frame;

[0020] And a limiting mechanism for preventing the wrapping tape from slipping off the placing rod is arranged on the second servo motor.

[0021] As a further preference of this technical solution: The third sleeve is sleeved outside the second sleeve, and the second sleeve is sleeved outside the first sleeve.

[0022] As a further preference of this technical solution: A second cable core conveying groove is further arranged inside the machine tool, a third connecting frame is arranged on the outer wall of the second cable core conveying groove, and two limiting wheels arranged side by side are rotatably connected to the third connecting frame.

[0023] As a further preference of this technical solution: A viewing window is arranged on the machine tool for observing the winding condition of the internal cable.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. In the present invention, during the automatic winding of the cable, the tension of the wrapping tape can be dynamically adjusted. During the winding process, once the tension of the wrapping tape does not match the preset value, the magnetic powder brake can quickly adjust the output torque of the DC motor, causing the third sleeve to generate acceleration, driving the swing arm and the roller shaft to rotate, changing the angle of the roller shaft, thereby adjusting the tension of the wrapping tape in real time, effectively avoiding the problems of uneven winding and looseness of the wrapping tape caused by unstable tension.

[0026] 2. In the present invention, by setting a pre-tightening mechanism, before the winding machine starts winding, the wrapping tape can be set to a specified tension. After the wrapping tape is wound along the specified path and wound around the cable for several turns, the electric push rod pushes the slider to slide in the chute, pushing the swing arm to rotate by a specified angle until the wrapping tape does not become loose, effectively solving the problem of looseness after manual winding of the wrapping tape, ensuring that the wrapping tape has a stable tension at the initial stage of winding, and providing a basis for subsequent dynamic adjustment of the tension of the wrapping tape.

[0027] 3. In the present invention, the feeding mechanism, the wrapping tape winding mechanism, and the tension adjusting mechanism are integrated into the same path and arranged concentrically, making the structure more compact. The first servo motor drives the first sleeve to rotate to achieve automatic feeding. At the same time, the third sleeve and the second sleeve are sleeved in sequence. Each mechanism performs its own functions and cooperates with each other, greatly saving the space occupied by the equipment, improving the cooperation efficiency between the mechanisms, reducing the production cost, and making the cable winding process more smooth and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 is a partial structural sectional view of the present invention;

[0030] Figure 3 is a partial structural schematic Figure 1 ;

[0031] Figure 4 is a partial structural schematic Figure 2 ;

[0032] Figure 5 is a partial structural schematic Figure 3 ;

[0033] Figure 6 is a partial structural explosion Figure 1 ;

[0034] Figure 7 is Figure 6 the enlarged schematic diagram at A in

[0035] Figure 8 Schematic diagram of the local structure of the present invention Figure 4 ;

[0036] Figure 9 Exploded view of the local structure of the present invention Figure 2 。

[0037] Legend: 100, machine tool; 101, viewing window; 200, mounting bracket; 300, feeding mechanism; 301, first servo motor; 302, first transmission component; 303, first sleeve; 304, placing rod; 305, limiting groove; 306, first cable core conveying groove; 400, winding component; 401, second servo motor; 402, second transmission component; 403, rotating disk; 404, first encoder; 405, third transmission component; 406, arc groove; 407, first guiding roller;

[0038] 408, connecting piece; 409, annular frame; 410, first connecting frame; 411, second sleeve;

[0039] 412, fixing rod; 500, tensioning mechanism; 501, DC motor; 502, magnetic powder brake; 503, fourth transmission component; 504, fifth transmission component; 505, second encoder; 506, third sleeve; 507, connecting ring; 508, swing arm; 509, connecting shaft; 510, roller shaft; 511, sliding groove; 600, limiting mechanism; 601, rotating frame; 602, roller shaft frame; 603, second guiding roller; 604, connecting block; 605, fixing bolt; 700, pre-tightening mechanism; 701, rotating shaft; 702, electric push rod; 703, slider; 800, bearing; 801, second connecting frame; 900, second cable core conveying groove; 901, third connecting frame; 902, limiting wheel. Detailed implementation manners

[0040] Next, the technical solutions of the present invention will be described clearly and completely in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1:

[0042] Please refer to Figures 1 - 9 , this application provides a concentric winding machine for cable processing, including a winding component 400 arranged inside a machine tool 100, and a mounting bracket 200 is arranged inside the machine tool 100. The winding component 400 and the tensioning mechanism 500 are both installed on the mounting bracket 200, and the tensioning mechanism 500 is arranged on the winding component 400;

[0043] The tensioning mechanism 500 includes a rotatable third sleeve 506. A connecting ring 507 is provided on the third sleeve 506. The connecting ring 507 is connected to a swing arm 508 through a connecting shaft 509. A roller shaft 510 is provided on the swing arm 508 for adjusting the tension of the wrapping tape. Before the wrapping tape is wound through the guide roller, the wrapping tape is first wound around the roller shaft 510 once. During the process of the swing arm 508 driving the roller shaft 510 to rotate, the adjustment of the tension of the wrapping tape can be realized.

[0044] In this embodiment, the tensioning mechanism 500 further includes a DC motor 501 provided inside the machine tool 100. The output end of the DC motor 501 is in transmission connection with the third sleeve 506 through a fourth transmission assembly 503. And a magnetic powder brake 502 for adjusting the transmitted torque is provided on the DC motor 501; and the output end of the DC motor 501 is connected to the second encoder 505 through a fifth transmission assembly 504 for monitoring the rotation speed of the tensioning mechanism 500 and providing a feedback signal.

[0045] In this embodiment, the wrapping component 400 includes a rotatable second sleeve 411. A rotating disk 403 is provided on the second sleeve 411. The rotating disk 403 is connected to an annular frame 409 through a fixing rod 412. And a first guide roller 407 which is used in pairs and connected together through a connecting piece 408 is provided between the rotating disk 403 and the annular frame 409. By passing the wrapping tape through between two mutually cooperating first guide rollers 407, a guiding effect is achieved. And during the rotation of the rotating disk 403, the wrapping tape can be driven to rotate and can be wound around the cable.

[0046] In this embodiment, the wrapping component 400 further includes a first encoder 404. The first encoder 404 is connected to the second sleeve 411 through a third transmission assembly 405 to realize the precise measurement and feedback of the rotational movement of the second sleeve 411. A second servo motor 401 for driving the second sleeve 411 to rotate is provided on the mounting frame 200. And the second sleeve 411 is connected to the output shaft of the second servo motor 401 through a second transmission assembly 402.

[0047] In this embodiment, two arc-shaped grooves 406 are symmetrically arranged on the rotating disk 403; and two corresponding connecting shafts 509 are provided. The two connecting shafts 509 correspondingly penetrate through the inner sides of the two arc-shaped grooves 406, giving a certain movement space to the arc-shaped grooves 406. During the wrapping process, by adjusting the relative position of the connecting shaft 509 inside the arc-shaped groove 406, the adjustment of the tension can be realized.

[0048] In this embodiment, a second cable core conveying groove 900 is further provided inside the machine tool 100 and is arranged in alignment with the first cable core conveying groove 306. A third connecting frame 901 is provided on the outer wall of the second cable core conveying groove 900. Two limiting wheels 902 arranged in parallel are rotatably connected to the third connecting frame 901. By passing the cable through between the two limiting wheels 902, it plays a guiding role. On the other hand, it can prevent the cable from being affected by the vibration of the machine during high-speed movement and continuously rubbing against the wall openings of the second cable core conveying groove 900 and the first cable core conveying groove 306, thereby avoiding the problem of cable wear.

[0049] In this embodiment, a viewing window 101 is provided on the machine tool 100 for observing the winding condition of the internal cable.

[0050] Specifically, by synchronously starting the DC motor 501 and the second servo motor 401, the second servo motor 401 can drive the second sleeve 411 to rotate through the transmission of the second transmission component 402, causing the rotating disk 403 to rotate. And through the first encoder 404, the rotation speed of the second sleeve 411 is accurately detected in real time. Also, because the tape has been passed through the first guiding roller 407, the fixed rod 412, and the second guiding roller 603 and wound around the cable in accordance with the specified path in advance. Then, with the rotation of the rotating disk 403, after the tape breaks away from the head of the manually wound tape, it can be automatically wound onto the cable. At the same time, the DC motor 501 drives the third sleeve 506 to rotate at the same speed through the fourth transmission component 503. The second encoder 505 monitors the rotation speed of the third sleeve 506 in real time. Then, the connecting ring 507 can drive the swing arm 508 on the connecting shaft 509 to rotate, and the swing arm 508 drives the roller shaft 510 to rotate. When the tension of the wound tape is different from the preset tension value, the output torque of the DC motor 501 is adjusted through the magnetic powder brake 502. Then, during the acceleration process of the third sleeve 506, during this process, it can drive the second encoder 505 to have a certain position change inside the arc-shaped groove 406. Specifically, when the DC motor 501 and the second servo motor 401 rotate synchronously, although the rotating disk 403 and the connecting shaft 509 are both in a high-speed operation state, their speeds are the same, so they are in a static state. And when the third sleeve 506 suddenly accelerates and moves, its position will change. When the rotation speeds of the DC motor 501 and the second servo motor 401 are the same again, they can rotate synchronously. During this process, the biggest change is that the roller shaft 510 has an angular change relative to the fixed rod 412 and the first guiding roller 407. Thus, the tape that is about to become slack is tightened again to the set tension value, realizing the dynamic adjustment of the tape tension during the automatic winding of the tape. The tension control accuracy is high, the efficiency is higher, and there is no need for manual stopping of the equipment for multiple tension adjustments.

[0051] Embodiment Two:

[0052] On the basis of the first embodiment, a pre-tightening mechanism 700 is provided on the rotating disc 403; the pre-tightening mechanism 700 includes a rotating shaft 701 rotatably provided on the rotating disc 403 through the rotating shaft 701, and a slider 703 is provided at the output end of the rotating shaft 701; and a sliding groove 511 for the slider 703 to slide is provided on the swing arm 508, which is used to adjust the belt to a specified tension before the wrapping machine starts wrapping.

[0053] Specifically, when the belt winds through the first guide roller 407, the fixed rod 412, the roller shaft 510 and the second guide roller 603 along a specified path and winds around the cable for several turns, the slider 703 can be pushed to slide inside the sliding groove 511 by the electric push rod 702, and then the swing arm 508 is pushed to rotate by a specified angle until the belt does not become slack. Before the belt is wrapped, the tension of the belt can be adjusted to a specified preset state, thus solving the problem that the belt will have a certain amount of rebound space after being manually wound, resulting in the belt becoming slack, and during the operation of the equipment, when dynamically adjusting the slack belt to a specified tension, it will not be affected.

[0054] Embodiment Three:

[0055] On the basis of the second embodiment, a feeding mechanism 300 for automatically feeding the belt is further provided inside the machine tool 100; the feeding mechanism 300 includes a rotatable first sleeve 303, and a first servo motor 301 for driving the first sleeve 303 to rotate is provided on the mounting frame 200. The first sleeve 303 is connected to the output end of the first servo motor 301 through a first transmission component 302, and a placing rod 304 for placing the belt is provided on the first sleeve 303.

[0056] In this embodiment, the third sleeve 506 is sleeved outside the second sleeve 411, the second sleeve 411 is sleeved outside the first sleeve 303, a first cable core conveying groove 306 for conveying the cable is provided inside the first sleeve 303, and a bearing 800 is provided on the outer wall of the second sleeve 411. The bearing 800 is connected to the mounting frame 200 through a second connecting frame 801, which is used to reduce the resistance of the contact part between the second sleeve 411 and the mounting frame 200 and reduce the friction with the mounting frame 200.

[0057] Specifically, during the process of winding the binding tape, the first servo motor 301 drives the first sleeve 303 to rotate through the first transmission assembly 302, and then drives the placing rod 304 thereon to rotate. The placing rod 304 drives the binding tape roll thereon to rotate, realizing automatic feeding. Moreover, the binding tape feeding, binding tape winding, and tension adjustment are integrated into the same path, making the structure more compact, each performing its own functions without interference, and there is no need to separately set aside space for installing the feeding mechanism 300 and the tensioning mechanism 500, reducing the space occupation.

[0058] Embodiment 4:

[0059] Based on Embodiment 3, a first connecting frame 410 is provided on the annular frame 409; and a limiting mechanism 600 for preventing the binding tape from slipping off the placing rod 304 is provided on the first connecting frame 410; the limiting mechanism 600 includes a rotating frame 601 rotatably connected to the first connecting frame 410. A connecting block 604 is provided at the lower end of the rotating frame 601. A fixing bolt 605 is provided on the connecting block 604, and a limiting groove 305 for mating with the fixing bolt 605 is provided on the placing rod 304. Preferably, in a threaded connection manner, by screwing the fixing bolt 605 into the inside of the limiting groove 305, the binding tape and its winding roller 510 are limited on the placing rod 304. And a roller 510 frame is provided on the rotating frame 601, and a second guiding roller 603 is provided on the roller 510 frame to guide the binding tape.

[0060] Specifically, after the binding tape roll is placed on the placing rod 304, the fixing bolt 605 is inserted into the inside of the limiting groove 305 and locked to limit and fix the binding tape roll, avoiding the problem that the binding tape roll drops due to mechanical vibration during the winding process.

[0061] The above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A concentric wrapping machine for cable processing, comprising a wrapping assembly (400) arranged inside a machine tool (100), characterized in that: The wrapping assembly (400) is provided with a tensioning mechanism (500); The tensioning mechanism (500) comprises a rotatable No. 3 sleeve (506), the No. 3 sleeve (506) is provided with a connecting ring (507), the connecting ring (507) is connected to a swing arm (508) via a connecting shaft (509), and the swing arm (508) is provided with a roller (510) for adjusting the tension of the strap.

2. A concentric wrapping machine for cable processing according to claim 1, characterized in that: The tensioning mechanism (500) further comprises a DC motor (501) arranged inside the machine tool (100), the output end of the DC motor (501) being transmission-connected to the No. 3 sleeve (506) via a No. 4 transmission assembly (503), and a magnetic powder brake (502) for adjusting the transmitted torque is arranged on the DC motor (501); The output end of the DC motor (501) is connected to the second encoder (505) via the fifth transmission component (504).

3. A concentric wrapping machine for cable processing according to claim 2, characterized in that: The wrapping assembly (400) comprises a rotatable No. 2 sleeve (411), a rotating disk (403) is arranged on the No. 2 sleeve (411), the rotating disk (403) is connected to an annular frame (409) via a fixing rod (412), and No. 1 guide rollers (407) are arranged between the rotating disk (403) and the annular frame (409) and are used in pairs and connected together via a connecting piece (408); The wrapping assembly (400) further comprises a No. 1 encoder (404), wherein the No. 1 encoder (404) is connected to the No. 2 sleeve (411) via a No. 3 transmission assembly (405) to achieve accurate measurement and feedback of the rotational motion of the No. 2 sleeve (411).

4. A concentric wrapping machine for cable processing according to claim 3, characterized in that: A feeding mechanism (300) for automatically conveying the tape is also provided inside the machine tool (100); The feeding mechanism (300) comprises a rotatable No. 1 sleeve (303), and a placement rod (304) is provided on the No. 1 sleeve (303) for placing the strap.

5. A concentric wrapping machine for cable processing according to claim 3, characterized in that: A pre-tightening mechanism (700) is provided on the rotating disk (403); The pre-tightening mechanism (700) comprises a rotating shaft (701) rotatably arranged on a rotating disk (403) via a rotating shaft (701), and a slider (703) is arranged at the output end of the rotating shaft (701); The swing arm (508) is provided with a sliding groove (511) for the sliding block (703) to slide.

6. A concentric wrapping machine for cable processing according to claim 3, characterized in that: The rotating disk (403) is provided with two arc-shaped grooves (406) arranged symmetrically; Furthermore, two connecting shafts (509) are correspondingly provided, and the two connecting shafts (509) are correspondingly provided through the inner sides of the two arc-shaped grooves (406).

7. A concentric wrapping machine for cable processing according to claim 3, characterized in that: A first connecting frame (410) is provided on the annular frame (409); Furthermore, the No. 1 connecting frame (410) is provided with a limiting mechanism (600) to prevent the strap from sliding off the placement rod (304).

8. A concentric wrapping machine for cable processing according to claim 4, characterized in that: The third sleeve (506) is sleeved on the outside of the second sleeve (411), and the second sleeve (411) is sleeved on the outside of the first sleeve (303).

9. A concentric wrapping machine for cable processing according to claim 1, characterized in that: A No. 2 cable core conveying trough (900) is also provided inside the machine tool (100), a No. 3 connecting frame (901) is provided on the outer wall of the No. 2 cable core conveying trough (900), and two limiting wheels (902) arranged in parallel are rotatably connected to the No. 3 connecting frame (901).

10. The concentric wrapping machine for cable processing according to claim 1, characterized in that: The machine tool (100) is provided with a viewing window (101) for observing the wrapping condition of the internal cables.

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