A traction device for a cable

Abstract

The utility model belongs to cable traction device technical field provides a traction equipment for cable, include: rack, traction mechanism, its setting on the rack and including opposite setting first conveyer belt and second conveyer belt on the rack, first conveyer belt and second conveyer form the traction space of traction cable movement, drive mechanism, its setting on the rack, control mechanism, traction mechanism includes the state of entering material and traction state. Compared with prior art, the utility model through setting switchable " the state of entering material " with " traction state " has realized under the partial clamping condition to complete the threading operation of big outer diameter cable. Especially under the state of entering material, allows one side conveyer belt to keep clamping (such as clamping traction rope), the other side loosens for cable to enter, thereby realizes " new mode of threading while traction ", has improved the operation convenience, threading efficiency and production continuity of equipment significantly, has laid the foundation for subsequent intelligent control.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable traction devices, specifically relating to a cable traction device. Background Technology

[0002] In the production of cables, optical cables, wires, and other cable products, traction equipment is one of the key auxiliary machines for achieving continuous and automated production. Its main function is to stably and continuously pull the cables from the extruder, cooling tank, printing machine, and other upstream processes to the take-up device, ensuring the synchronous operation and tension control of the entire production line.

[0003] Currently, the traction equipment widely used in the cable industry mainly includes two categories: tracked traction machines and wheeled traction machines. Among them, tracked traction machines dominate in large-section, high-tension, or long-distance traction applications due to their advantages such as large clamping area, strong traction force, and stable operation.

[0004] A typical tracked traction machine usually includes a frame, conveyor belts (tracks) arranged vertically or horizontally, a drive mechanism, and a clamping mechanism. During operation, the two sets of conveyor belts clamp the cable under the action of cylinders (pneumatic or hydraulic cylinders), and the cable moves forward through friction. However, a prominent problem generally exists in existing traction equipment: the clamping mechanism usually adopts an overall synchronous control method, meaning that both conveyor belts clamp or release simultaneously.

[0005] This structure presents significant challenges when threading large-diameter cables. Because the traction space must be fully opened to allow the cable head to enter, effective traction cannot be provided during the threading stage. This often necessitates manual pushing or the use of external tools, which is not only inefficient but also prone to scratching the cable surface, increases the workload for operators, and can even compromise production safety.

[0006] In addition, traditional traction equipment has poor adaptability to cables of different diameters, the adjustment process is cumbersome, and it lacks intelligent control methods, making it difficult to achieve automatic switching between feeding and traction states and precise control of traction force. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a cable traction device in light of the current state of the technology.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A cable traction device is proposed, comprising:

[0009] frame;

[0010] A traction mechanism is mounted on the frame and includes a first conveyor belt and a second conveyor belt mounted opposite each other on the frame. The first conveyor belt and the second conveyor belt are located on opposite sides of the cable movement path and form a traction space for traction of the cable.

[0011] A drive mechanism, which is mounted on the frame, is used to drive the first conveyor belt and the second conveyor belt to run synchronously;

[0012] The control mechanism includes a feeding state and a traction state, and the control mechanism is used to control the traction mechanism to switch between the feeding state and the traction state;

[0013] When in the feeding state, the starting end of the traction space along the traction direction forms an opening for the cable to enter the traction space;

[0014] When in the traction state, the first conveyor belt and the second conveyor belt press against both sides of the cable to push the cable.

[0015] In the above-mentioned cable traction device, when in the feeding state, the traction space is sequentially formed into a feeding section and a traction section along the traction direction, and the opening width of the feeding section is greater than the diameter of the cable.

[0016] In the aforementioned cable traction device, the opening width of the feed section gradually decreases along the cable movement direction and smoothly transitions with the traction section.

[0017] In the aforementioned cable traction device, the traction mechanism further includes an adjustment device for adjusting the spacing between the first conveyor belt and the second conveyor belt to accommodate cables of different diameters.

[0018] In the aforementioned cable traction device, the adjusting device is one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and is connected to the control mechanism.

[0019] In the aforementioned cable traction device, the first and second conveyor belts are made of rubber or polyurethane to increase friction with the cable.

[0020] In one of the cable traction devices described above, the drive mechanism includes a servo motor or a variable frequency motor and is electrically connected to the control mechanism.

[0021] The aforementioned cable traction device further includes a traction rope, which is fixed to one end of the cable.

[0022] In the aforementioned cable traction device, the control mechanism is a PLC control system or a single-chip microcomputer control system, which can automatically switch between the feeding state and the traction state according to a preset program.

[0023] In the aforementioned cable traction device, the control mechanism further includes a pressure sensor for detecting the clamping force of the first and second conveyor belts on the cable and for providing feedback to adjust the magnitude of the traction force.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) By setting switchable “feeding state” and “traction state”, the insertion of large-diameter cables can be completed under partial clamping conditions. Especially in the feeding state, one side of the conveyor belt is allowed to remain clamped (such as clamping the traction rope) while the other side is released to allow the cable to enter, thereby realizing a new mode of “pulling while threading”, which significantly improves the ease of operation, threading efficiency and production continuity of the equipment, and lays the foundation for subsequent intelligent control.

[0026] (2) By dividing the traction space into the feeding section and the traction section, not only is sufficient threading space retained, but also the complete loss of traction force is avoided, realizing the coordinated operation of threading and traction, which greatly improves the equipment's adaptability to large-specification cables and its operational reliability.

[0027] (3) The opening width of the feed section gradually decreases along the direction of cable movement and smoothly transitions with the traction section. This tapered guide structure plays an automatic guiding role, which can guide the cable to slide smoothly into the traction area and effectively prevent deviation, jamming or damage to the outer sheath caused by sudden changes in the inlet. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a cable traction device according to the present invention.

[0029] Figure 2 yes Figure 1 A schematic diagram of the traction mechanism switching to the feeding state.

[0030] In the diagram, 100 is the frame; 200 is the traction mechanism; 210 is the first conveyor belt; 220 is the second conveyor belt; 300 is the drive mechanism; 400 is the cable; 500 is the traction rope; 600 is the traction space; 610 is the feeding section; 620 is the traction section; and 700 is the traction direction. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] In the continuous production of cables, optical cables, and other wire and cable products, traction equipment is a crucial link in ensuring the stable operation of the production line. With the increasing diversification of cable specifications, especially the emergence of large-diameter, highly flexible specialty cables, traditional traction equipment can no longer meet the needs of modern production in terms of threading efficiency, operational convenience, and automation. Therefore, there is an urgent need for a new type of traction equipment with a reasonable structure, intelligent control, and strong adaptability. The following will systematically elaborate on the technological innovation and practical value of this invention, combining specific technical solutions and their beneficial effects.

[0034] like Figures 1 to 2 As shown, this solution provides a cable traction device, including: a frame 100, a traction mechanism 200, a drive mechanism 300, and a control mechanism.

[0035] The traction mechanism 200 is mounted on the frame 100 and includes a first conveyor belt 210 and a second conveyor belt 220 mounted opposite to each other on the frame 100. The first conveyor belt 210 and the second conveyor belt 220 are located on both sides of the moving path of the cable 400, forming a traction space 600 for moving the cable 400. The drive mechanism 300 is mounted on the frame 100 and is used to drive the first conveyor belt 210 and the second conveyor belt 220 to run synchronously. The traction mechanism 200 includes a feeding state and a traction state. The control mechanism is used to control the traction mechanism 200 to switch between the feeding state and the traction state. When in the feeding state, the traction space 600 forms an opening at the starting end of the moving direction of the cable 400 for the cable 400 to enter the traction space 600. When in the traction state, the first conveyor belt 210 and the second conveyor belt 220 abut against both sides of the cable 400 to push the cable 400.

[0036] The aforementioned structural design fundamentally solves the technical problem of traditional traction machines requiring complete release before cable threading, which leads to traction interruption. By setting switchable "feeding state" and "traction state," the threading operation of large-diameter cables 400 can be completed under partial clamping conditions. In particular, in the feeding state, one side of the conveyor belt can remain clamped (e.g., clamping the traction rope 500), while the other side is released to allow the cable 400 to enter, thus realizing a new "threading and traction simultaneously" mode. This significantly improves the ease of operation, threading efficiency, and production continuity of the equipment, laying the foundation for subsequent intelligent control.

[0037] Furthermore, when in the feeding state, the traction space 600 sequentially forms a feeding section 610 and a traction section 620 along the moving direction of the cable 400, and the opening width of the feeding section 610 is greater than the diameter of the cable 400.

[0038] This design gives the traction space 600 functional partitioning: the front end is a spacious feed section 610, facilitating the smooth entry of large-diameter cables 400; the rear end is a traction section 620 that can still clamp the cables, maintaining basic traction capacity. This segmented structure not only preserves sufficient space for cable threading but also avoids complete loss of traction force, achieving coordinated threading and traction, greatly improving the equipment's adaptability to large-diameter cables and its operational reliability.

[0039] A further optimization is that the opening width of the feed section 610 gradually decreases along the moving direction of the cable 400 and smoothly transitions with the traction section 620.

[0040] This tapered guide structure acts as an automatic guide, smoothly guiding the cable 400 into the traction area and effectively preventing deviation, jamming, or damage to the outer sheath caused by sudden changes in the entry point. Especially for highly flexible or surface-sensitive special cables 400, this design significantly improves the smoothness and safety of the threading process, reduces manual intervention, and increases operational efficiency.

[0041] To enhance the versatility of the equipment, the traction mechanism 200 also includes an adjustment device for adjusting the spacing between the first conveyor belt 210 and the second conveyor belt 220 to accommodate cables 400 of different diameters.

[0042] This adjustable structure greatly expands the equipment's application range, enabling it to be compatible with a variety of products, from small-diameter wires to large-section 400 power cables. No equipment replacement or complex disassembly and assembly is required; new specifications can be quickly adapted simply by adjustment, significantly shortening changeover time and improving the flexibility and overall production efficiency of the production line.

[0043] Furthermore, the adjusting device is one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and is connected to the control mechanism to achieve automatic adjustment.

[0044] By employing a power actuator in conjunction with a control system, the adjustment of the conveyor belt spacing is transformed from manual to automatic. Operators only need to input parameters or select a preset program, and the system can automatically complete the setting of clamping position and force. The adjustment process is fast, precise, and repeatable, improving the automation level of the equipment and process consistency, and reducing reliance on operator skills.

[0045] In terms of material selection, the first conveyor belt 210 and the second conveyor belt 220 are made of rubber or polyurethane to increase the friction with the cable 400 and prevent damage to the surface of the cable 400.

[0046] These high-friction, low-hardness non-metallic materials provide sufficient traction to prevent slippage and effectively buffer pressure, avoiding indentations or scratches on the cable sheath. They are particularly suitable for high-end power cables and communication optical cables, where strict appearance quality requirements are necessary, ensuring the surface integrity and performance of the product.

[0047] The optimization of the drive system is reflected in the fact that the drive mechanism 300 includes a servo motor or a variable frequency motor and is electrically connected to the control mechanism.

[0048] Servo or variable frequency motors possess excellent speed control performance, enabling stepless speed regulation and precise synchronization to meet the speed matching requirements of different process stages (such as start-up acceleration, steady-speed traction, and deceleration shutdown). Combined with commands from the control system, this ensures a smooth and controllable traction process, preventing cable stretching deformation or breakage due to sudden speed changes, thus improving product quality and equipment operational stability.

[0049] To solve the problem of threading the large cable 400, this device also includes a traction rope 500, which is fixed to one end of the cable 400.

[0050] The traction rope 500 serves as a temporary traction medium. During the feeding process, it can be driven by the conveyor belt on one side, which is already clamped, thereby gradually pulling the large-diameter cable 400 into the traction space 600. This "small-to-large" guiding mechanism eliminates the need for manual pushing or additional traction tools, significantly reducing labor intensity and improving the safety and efficiency of threading. It is a key auxiliary means to achieve continuous threading operations.

[0051] Regarding the control system, the control mechanism is a PLC control system or a single-chip microcomputer control system, which can automatically switch between the feeding state and the traction state according to a preset program.

[0052] The intelligent control platform makes the entire traction process programmable, memoryable, and traceable. The system can store multiple process parameters and supports one-click switching between different 400-gauge cable operating modes, greatly simplifying the operation process, improving the automation level of the equipment and production management efficiency, which is in line with the development trend of modern intelligent manufacturing.

[0053] Finally, the control mechanism also includes a pressure sensor for detecting the clamping force of the first conveyor belt 210 and the second conveyor belt 220 on the cable 400, and for providing feedback to adjust the magnitude of the traction force.

[0054] By introducing a closed-loop force control mechanism, the system can monitor the clamping force in real time and dynamically adjust the actuator's actions to ensure that the clamping force is always within the optimal range—neither too large to avoid damaging the cable, nor too small to cause slippage. This precise pressure management significantly improves the reliability of traction and the consistency of product quality, and is especially suitable for the processing of tension-sensitive precision cables.

[0055] In summary, this invention, by constructing a traction device with dual-mode switching capabilities for "feeding state" and "traction state," combined with a segmented traction space 600, adjustable clamping spacing, intelligent control system, and traction rope 500 guidance mechanism, comprehensively solves the problems of traction interruption, operational difficulties, and poor adaptability that exist in traditional traction machines during the threading of large-diameter cables 400. The synergistic effect of these technical features not only improves the ease of operation and automation level of the equipment but also significantly enhances its adaptability to multiple cable specifications 400 and the stability and safety of the traction process. This invention has a reasonable structure, complete functions, and strong practicality, possessing good industrialization prospects and application value, representing a new direction for the development of traction equipment towards intelligence and flexibility.

[0056] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0058] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A cable pulling device, characterized in that, include: frame; A traction mechanism is mounted on the frame and includes a first conveyor belt and a second conveyor belt mounted opposite each other on the frame. The first conveyor belt and the second conveyor belt are located on opposite sides of the cable movement path and form a traction space for traction of the cable. A drive mechanism, which is mounted on the frame, is used to drive the first conveyor belt and the second conveyor belt to run synchronously; The control mechanism includes a feeding state and a traction state, and the control mechanism is used to control the traction mechanism to switch between the feeding state and the traction state; When in the feeding state, the starting end of the traction space along the traction direction forms an opening for the cable to enter the traction space; When in the traction state, the first conveyor belt and the second conveyor belt press against both sides of the cable to push the cable.

2. The cable pulling device as described in claim 1, characterized in that, When in the feeding state, the traction space is formed sequentially into a feeding section and a traction section along the traction direction, and the opening width of the feeding section is greater than the diameter of the cable.

3. A cable pulling device as described in claim 2, characterized in that, The opening width of the feed section gradually decreases along the direction of cable movement and smoothly transitions with the traction section.

4. A cable pulling device as described in claim 1, characterized in that, The traction mechanism also includes an adjustment device for adjusting the distance between the first and second conveyor belts to accommodate cables of different diameters.

5. A cable pulling device as described in claim 4, characterized in that, The adjusting device is one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and is connected to the control mechanism.

6. A cable pulling device as described in claim 1, characterized in that, The first and second conveyor belts are made of rubber or polyurethane to increase friction with the cables.

7. A cable pulling device as described in claim 1, characterized in that, The drive mechanism includes a servo motor or a variable frequency motor and is electrically connected to the control mechanism.

8. A cable pulling device as described in claim 1, characterized in that, It also includes a traction rope, which is fixed to one end of the cable.

9. A cable pulling device as described in claim 1, characterized in that, The control mechanism is a PLC control system or a single-chip microcomputer control system, which can automatically switch between feeding state and traction state according to a preset program.

10. A cable pulling device as described in claim 1, characterized in that, The control mechanism also includes a pressure sensor for detecting the clamping force of the first and second conveyor belts on the cable and for providing feedback to adjust the traction force.

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