A cable stranding machine

Abstract

The utility model discloses a cable pair stranding machine, including base, the base top is fixed with support, one side fixed bearing seat at support top end, the other side fixed first bevel gear at support top end, bearing rotation is connected with the pivot in bearing inside, one end of pivot is installed with drive mechanism, the pivot other end axle body penetrates first bevel gear center, the axle body fixed with fixed base of pivot penetration first bevel gear, both sides of fixed base all rotation is connected with the reel, the axle body fixed with second bevel gear of reel near rotation junction, second bevel gear and first bevel gear meshing connection, the end of pivot near fixed base is fixed with the stranding reel, adopts the rigid meshing transmission of first bevel gear and second bevel gear, the speed ratio relation of forced binding reel rotation and revolution, avoids the signal delay and coordination error of electronic synchronous system, ensures double wire core pay-off length absolute synchronization, eliminates the tension imbalance and pitch fluctuation from the root, promotes the stranding accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable manufacturing equipment, and specifically relates to a cable twisting machine. Background Technology

[0002] In communication cable manufacturing, twisted pairs are formed by spirally twisting two insulated cores at a constant pitch. Their quality directly affects the cable's electromagnetic compatibility and transmission performance. Existing twisting equipment mainly suffers from two types of technical defects: 1. Electronic synchronous twisting machines use independent servo motors to drive the spindle's rotation and revolution separately, relying on a control system for coordinated movement. Their inherent defects include: insufficient synchronization accuracy, easily leading to tension imbalance, pitch fluctuations, and even wire breakage; high cost and maintenance pressure, high hardware and software failure rates, and complex maintenance. 2. Mechanical synchronous twisting machines: To circumvent the defects of electronic synchronization, some equipment attempts a mechanical forced synchronization scheme. However, if multi-stage gears are used to transmit power, the meshing backlash leads to accumulated angular displacement errors, disrupting the equal length of the twin wires; direct pull-and-release structures omit the rotation drive mechanism, relying solely on centrifugal force or external traction to release the cores, resulting in: random changes in frictional resistance between the core and the spindle, drastic fluctuations in release tension, and no forced correlation between the core release speed and the revolution speed, leading to random drift in the twisting pitch.

[0003] In view of the above problems, this utility model proposes a cable twisting machine that simultaneously achieves error-free synchronous and constant tension cable laying, eliminates dependence on electronic systems, and ensures absolute synchronous movement of the two wires through a rigid transmission chain, thereby achieving stable tension control. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cable twisting machine, including a base, a support fixed to the top of the base, a bearing seat fixed to one side of the top of the support, a first bevel gear fixed to the other side of the top of the support, a rotating shaft rotatably connected inside the bearing seat via a bearing, a drive mechanism installed at one end of the rotating shaft, the shaft body of the other end of the rotating shaft passing through the center of the first bevel gear, a fixed seat fixed to the shaft body passing through the first bevel gear, spools rotatably connected to both sides of the fixed seat, a second bevel gear fixed to the shaft body near the rotatable connection of the spools, the second bevel gear and the first bevel gear meshing together, and a stranding reel fixed to the end of the rotating shaft near the fixed seat.

[0005] As a preferred embodiment of this utility model, the shaft body passes through the first bevel gear and is rotatably connected to the center of the first bevel gear via a bearing.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes a drive motor, and both the output end of the drive motor and the shaft body are fixed with sprockets, and the two sprockets are connected by chain drive.

[0007] As a preferred embodiment of this utility model, the stranded wire reel includes a reel body, a cross bracket is fixed inside the reel body, a first conductor ring is fixed at two symmetrical included angles of the cross bracket, and long bolts are fixed at the other two symmetrical included angles of the cross bracket. A fixing ring is sleeved on the outside of each of the two long bolts, a second conductor ring is fixed between the two fixing rings, and a locking nut is installed on both sides of the long bolts located on the fixing rings.

[0008] As a preferred embodiment of this utility model, a partition is fixed to the shaft of the spool near the second bevel gear.

[0009] As a preferred embodiment of this utility model, one end of the spool is rotatably connected to the fixed base, and the other end of the spool is fixed with a clamping bolt.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) This utility model adopts a rigid meshing transmission of the first bevel gear and the second bevel gear, which forcibly binds the speed ratio relationship between the spindle's rotation and revolution, avoiding signal delay and coordination error of the electronic synchronization system, ensuring absolute synchronization of the double core wire release length, eliminating tension imbalance and pitch fluctuation from the root, and improving stranding accuracy. Moreover, it avoids the defects of traditional mechanical systems. Unlike the passive wire release mode that relies on centrifugal force or external traction, this structure drives the spindle to rotate actively through bevel gear meshing. The core release speed and revolution speed are strictly synchronized. With the mechanical limit of the partition and clamping bolt, the frictional resistance between the core and the spindle is kept constant, achieving stable wire release and solving the problem of unstable stranding quality caused by backlash accumulation or passive wire release in traditional mechanical synchronous equipment.

[0012] (2) This utility model abandons multiple servo motors and complex control systems, and adopts a minimalist architecture of single motor drive + mechanical transmission chain, which reduces the failure rate of electronic components. The maintenance object only needs to periodically check the gear meshing clearance and chain tension, which greatly reduces the maintenance cost and technical threshold of software and hardware, and is suitable for industrial mass production scenarios. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0016] Figure 3 This is a schematic diagram of the stranded wire reel in this utility model;

[0017] In the diagram: 1. Base; 2. Support; 3. Bearing seat; 4. First bevel gear; 5. Shaft; 6. Fixed seat; 7. Bollard; 8. Second bevel gear; 9. Stranded wire reel; 10. Drive motor; 11. Sprocket; 12. Disc body; 13. Cross bracket; 14. First conductor ring; 15. Long rod bolt; 16. Fixed ring; 17. Second conductor ring; 18. Locking nut; 19. Partition plate; 20. Pressing bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example

[0020] Please see Figure 1-3 The present invention provides the following technical solution: a cable twisting machine, including a base 1, a support 2 fixed on the top of the base 1, a bearing seat 3 fixed on one side of the top of the support 2, a first bevel gear 4 fixed on the other side of the top of the support 2, a rotating shaft 5 rotatably connected inside the bearing seat 3 via a bearing, a drive mechanism installed at one end of the rotating shaft 5, and the shaft body of the other end of the rotating shaft 5 passing through the center of the first bevel gear 4. A fixed seat 6 is fixed to the shaft body of the rotating shaft 5 passing through the first bevel gear 4. A bobbin 7 is rotatably connected to both sides of the fixed seat 6. A second bevel gear 8 is fixed to the shaft body of the bobbin 7 near the rotatable connection point. The second bevel gear 8 and the first bevel gear 4 are meshed and connected. A stranding reel 9 is fixed to the end of the rotating shaft 5 near the fixed seat 6.

[0021] To ensure that the first bevel gear 4 remains stationary during the rotation of the shaft 5, the rigid meshing transmission between the first bevel gear 4 and the second bevel gear 8 forces the spool 7 to rotate synchronously, thereby achieving absolute synchronous movement of double wire feeding. In this embodiment, as a preferred technical solution of the present invention, the shaft of the shaft 5 passes through the first bevel gear 4 and is rotatably connected to the center of the first bevel gear 4 via a bearing.

[0022] In order to provide stable power input through the rigid transmission chain of sprocket 11 and chain, and at the same time to ensure stable rotation speed of shaft 5 by taking advantage of the low maintenance characteristics and constant transmission ratio of chain drive, thereby reducing system complexity and maintenance costs, in this embodiment, as a preferred technical solution of the present invention, the drive mechanism includes a drive motor 10, and sprockets 11 are fixed at both the output end of the drive motor 10 and the shaft body of shaft 5. The two sprockets 11 are connected by chain drive.

[0023] In order to fix the first conductor ring 14 to form a fixed stranding starting point by means of the cross bracket 13, and to adjust the radial position of the second conductor ring 17 by means of the long bolt 15 and the locking nut 18 to adapt to different stranding pitch requirements and realize flexible adjustment of the spiral stranding radius, in this embodiment, as a preferred technical solution of the present invention, the stranding reel 9 includes a reel body 12, and a cross bracket 13 is fixed inside the reel body 12. The first conductor ring 14 is fixed at two symmetrical included angles of the cross bracket 13, and a long bolt 15 is fixed at the other two symmetrical included angles of the cross bracket 13. A fixing ring 16 is sleeved on the outside of the two long bolts 15, and a second conductor ring 17 is fixed between the two fixing rings 16. Locking nuts 18 are installed on both sides of the long bolts 15 located on the fixing rings 16.

[0024] In order to isolate the wire core coil on the spool 7 from the second bevel gear 8 by the partition 19, avoid frictional interference between the wire core and the meshing part of the gear during the wire feeding process, limit the axial movement of the wire core coil, maintain uniform and stable wire feeding tension, and prevent tension fluctuations caused by changes in frictional resistance, in this embodiment, as a preferred technical solution of the present invention, the shaft of the spool 7 near the second bevel gear 8 is fixed with the partition 19.

[0025] In order to axially fix the core coil between the fixing seat 6 and the clamping bolt 20 by means of the clamping bolt 20, and to ensure that the spool 7 maintains a reliable connection with the fixing seat 6 during revolution and rotation, so as to avoid sudden changes in the wire tension or synchronous failure caused by the loosening of the spool 7, and to improve the stability and reliability of the equipment operation, in this embodiment, as a preferred technical solution of the present invention, one end of the spool 7 is rotatably connected to the fixing seat 6, and the other end of the spool 7 is fixed with the clamping bolt 20.

[0026] In summary, based on the above-described technical solution of this utility model, the specific workflow is as follows:

[0027] Power input and revolution drive: First, the spool 7 passes through the center of the wire core coil, and then it is fixed by connecting the nut and clamping bolt 20. The drive motor 10 drives the rotating shaft 5 to rotate through the chain drive sprocket 11. The rotating shaft 5 passes through the first bevel gear 4 and is supported by the bearing seat 3. Then the fixed seat 6 revolves synchronously with the rotating shaft 5, driving the wire core coil of the two spools 7 and the shaft body of the spool 7 to perform circular motion.

[0028] Rotation of spool 7 and constant tension wire feeding: The second bevel gear 8 is fixed to the shaft end of spool 7 near the fixed base 6, and it always maintains a meshing state with the first bevel gear 4 fixed to the top of the support 2. When the rotating shaft 5 revolves, the second bevel gear 8 rolls along the tooth surface of the first bevel gear 4, forcibly driving the spool 7 to rotate. During this process, the wire core is released by the rotation, and the partition plate 19 and the clamping bolt 20 fix the wire core, restricting the axial movement of the wire core, ensuring that the wire core tension is uniform and stable during the wire feeding process, and avoiding pitch drift caused by fluctuations in frictional resistance.

[0029] Adjustable stranding structure and helical stranding: After the wire cores are released from the spool 7, they are guided through the first conductor ring 14 of the stranding reel 9 body 12. As the shaft 5 revolves and the spool 7 rotates, the two wire cores move in a helical motion at a constant speed ratio. The long bolt 15 on the cross bracket 13 adjusts the axial position of the fixing ring 16, thereby changing the radial distance of the second conductor ring 17, thus adjusting the stranding radius and pitch. The stranded cable is then led out through the second conductor ring 17 and enters the subsequent winding mechanism.

[0030] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable stranding machine comprising a base (1), characterized in that: The base (1) is fixed with a support (2) at the top. A bearing seat (3) is fixed on one side of the top of the support (2). A first bevel gear (4) is fixed on the other side of the top of the support (2). A rotating shaft (5) is rotatably connected inside the bearing seat (3) through a bearing. A drive mechanism is installed at one end of the rotating shaft (5). The shaft of the other end of the rotating shaft (5) passes through the center of the first bevel gear (4). A fixed seat (6) is fixed to the shaft of the rotating shaft (5) that passes through the first bevel gear (4). A bobbin (7) is rotatably connected to both sides of the fixed seat (6). A second bevel gear (8) is fixed to the shaft of the bobbin (7) near the rotatable connection. The second bevel gear (8) and the first bevel gear (4) are meshed. A stranded coil (9) is fixed to the end of the rotating shaft (5) near the fixed seat (6).

2. A cable stranding machine according to claim 1, characterised in that: The shaft (5) passes through the first bevel gear (4) and is rotatably connected to the center of the first bevel gear (4) via a bearing.

3. A cable stranding machine according to claim 1, wherein: The driving mechanism includes a drive motor (10), and sprockets (11) are fixed to the output end of the drive motor (10) and the shaft of the rotating shaft (5). The two sprockets (11) are connected by chain drive.

4. A cable stranding machine according to claim 1, wherein: The stranded coil (9) includes a coil body (12), inside which a cross bracket (13) is fixed. A first conductor ring (14) is fixed at two symmetrical angles of the cross bracket (13), and a long bolt (15) is fixed at the other two symmetrical angles of the cross bracket (13). A fixing ring (16) is sleeved on the outside of each of the two long bolts (15), and a second conductor ring (17) is fixed between the two fixing rings (16). Locking nuts (18) are installed on both sides of the long bolts (15) located on the fixing rings (16).

5. A cable stranding machine according to claim 1, wherein: The spool (7) is fixed with a partition (19) near the shaft of the second bevel gear (8).

6. A cable stranding machine according to claim 1, wherein: One end of the spool (7) is rotatably connected to the fixed seat (6), and the other end of the spool (7) is fixed with a clamping bolt (20).

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