A continuous quality inspection device for cable production lines

Abstract

This invention discloses a continuous quality inspection device for cable production lines, comprising a fixed base, a rotating ring rotatably sleeved on the outer side of the fixed base, multiple inspection modules fixedly mounted on the rotating ring, a reciprocating swing assembly, and a self-adjusting assembly. The self-adjusting assembly includes a connecting block with a trapezoidal groove inside, and a pushing block movably inserted into the trapezoidal groove. The rotating ring drives the inspection modules to reciprocate, comprehensively covering all areas of the cable. Furthermore, the addition of a trapezoidal groove structure with varying widths allows for automatic adjustment of the pushing block's effective stroke based on changes in the cable's outer diameter, thereby autonomously adjusting the reciprocating swing amplitude of the inspection modules. For thicker cables, the swing angle is automatically increased to achieve a complete full-circumference scan; for thinner cables, the swing angle is automatically reduced to adapt to a precise inspection field of view, avoiding resource waste caused by ineffective data acquisition and further improving the overall efficiency of continuous inspection on the production line and the equipment's environmental adaptability.

Description

Technical Field

[0001] This invention belongs to the field of cable testing technology, and in particular relates to a continuous quality testing device for cable production lines. Background Technology

[0002] In the industrial production and processing of cables, appearance defects such as damage, dents, scratches, and uneven coating on the outer surface of the cable directly affect the quality of the finished product and the pass rate of delivery. Therefore, online real-time appearance quality inspection has become an indispensable and important part of the cable production process.

[0003] Currently, the commonly used cable appearance inspection methods in the industry mostly use fixed-point cameras to capture images for defect identification. The shooting angle is relatively simple, and it can only capture the surface condition of the cable on the side facing the camera. It is difficult to cover the side area perpendicular to the shooting angle and various visual inspection blind spots, which can easily lead to missed defects in hidden locations and misjudgments. The overall inspection is not comprehensive. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution: A continuous quality inspection device for a cable production line, comprising: A fixed base, on the outside of which a rotating ring is rotatably sleeved, and a double torsion spring is provided between the rotating ring and the fixed base. Multiple detection modules are fixedly installed on the rotating ring. A reciprocating oscillating assembly, the reciprocating oscillating assembly including a rack, a drive gear rotatably inserted into the fixed base meshing in the middle of the rack, and an arc-shaped rack fixedly connected to a rotating ring on one side of the drive gear; The self-adjusting component includes a connecting block fixed to the end of a rack. A trapezoidal groove is formed inside the connecting block. The center line of the trapezoidal groove is perpendicular to the rack. A pushing block is movably inserted into the trapezoidal groove. The pushing block is located on the center line of the trapezoidal groove and reciprocates in the direction of the rack. When the push block reciprocates, it first slides without travel and then pushes the connecting block and the rack against the inner wall of the trapezoidal groove. Through the drive gear and the arc rack transmission, the rotating ring reciprocates and deflects. Multiple detection modules rotate accordingly to change the detection direction. When the cable diameter changes, the push block is adjusted in the direction of the center line of the trapezoidal groove. With the help of the tapered structure of the trapezoidal groove, the effective stroke of the push block changes accordingly, and the reciprocating movement distance of the rack is automatically adjusted to change the maximum deflection distance of the detection module.

[0005] As a preferred embodiment of the above technical solution, a synchronous drive component is also included. The synchronous drive component includes a steering mechanism, a circumferential linear conversion mechanism, and two sets of moving frames. The two moving frames move toward or in opposite directions toward the center of the rotating ring. A flexible clamping wheel for clamping the cable is rotatably inserted through the middle of the moving frame. The input end of the steering mechanism is connected to the rotating shaft of the flexible clamping wheel. The output end of the steering mechanism is connected to the input end of the circumferential linear conversion mechanism. The pushing block is fixedly connected to the output end of the circumferential linear conversion mechanism. Two sets of moving frames move towards each other, causing the flexible clamping wheels to clamp cables of different outer diameters. The friction of the cables driving the flexible clamping wheels to rotate and output power, which is then driven by the steering mechanism and the circumferential linear conversion mechanism to drive the push block to complete the reciprocating motion. When the cable diameter changes, the synchronous drive assembly moves as a whole and drives the push block to move along the center line of the trapezoidal groove to complete the position adjustment.

[0006] As a preferred embodiment of the above technical solution, the flaring direction of the trapezoidal groove is the same as the moving direction of the moving frame toward the cable. The larger the cable diameter, the smaller the diameter of the trapezoidal groove where the pushing block moves along the narrowing direction of the flaring, the shorter the idle sliding distance and the larger the effective stroke. The smaller the cable diameter, the larger the diameter of the trapezoidal groove where the pushing block moves along the widening direction of the flaring, the longer the idle sliding distance and the smaller the effective stroke.

[0007] As a preferred embodiment of the above technical solution, the steering mechanism is a bevel gear reversing transmission mechanism with different diameters, which forms a differentiated transmission ratio based on two bevel gears with different diameters and numbers of teeth that mesh together.

[0008] As a preferred embodiment of the above technical solution, the circumferential linear conversion mechanism is a crank-slider mechanism, which is used to convert the continuous rotational motion output by the steering mechanism into linear reciprocating motion along the extension direction of the rack.

[0009] As a preferred embodiment of the above technical solution, it further includes a linear drive component, which is fixedly mounted on a fixed base. The output end of the linear drive component is connected to two sets of movable frames to drive the two sets of movable frames to achieve opposite clamping and reverse separation actions.

[0010] As a preferred embodiment of the above technical solution, the linear drive component is a cylinder drive assembly or an electric lead screw slide.

[0011] As a preferred embodiment of the above technical solution, the outer wall of the soft clamping wheel is covered with an elastic wear-resistant protective pad layer.

[0012] The beneficial effects of this invention are as follows: 1. By using a rotating ring to drive the detection module to swing back and forth, the image acquisition angle can be flexibly adjusted to capture areas perpendicular to the monitoring angle under a fixed viewpoint, as well as various visual blind spots. This helps to identify appearance defects in hidden locations on the outer wall of the cable, eliminates blind spots in fixed-point shooting, and significantly improves the defect detection rate. On this basis, a trapezoidal groove structure with gradually changing width is added, which can automatically change the effective pushing stroke of the push block according to the change of the cable's outer diameter. This allows for autonomous adjustment of the reciprocating swing amplitude of the detection module, eliminating the need for manual calibration and electrical control parameter setting. Relying on mechanical linkage, it can match different cables of different thicknesses in real time. For thicker cables, the swing angle can be automatically increased to effectively expand the detection coverage area and better adapt to the circumferential detection needs of large-diameter cables, improving the integrity of the detection area. For thinner cables, the swing angle can be automatically reduced to adapt to the precise detection field of view, avoiding resource waste caused by ineffective acquisition, and further improving the overall efficiency of continuous inspection on the production line and the equipment's adaptability to the environment. 2. Power is generated by the friction between the cable and the flexible clamping wheel as the cable moves. Only when the cable moves forward can the clamping wheel be rotated to transmit power, driving the detection module to perform reciprocating oscillation detection. At the same time, during the process of completing the cable clamping and positioning, the push block is simultaneously driven to complete the position shift. It works in perfect coordination with the gradual structure of the trapezoidal groove to smoothly complete the adaptive adjustment of the swing amplitude. This couples the cable clamping, power synchronization and swing angle adjustment, further enhancing the overall adaptive detection effect of the equipment. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment; Figure 2 The diagram shown is a deflection state diagram of the rotating ring in the embodiment; Figure 3 The diagram shown illustrates the installation location of the self-adjusting component in the embodiment. Figure 4 The diagram shown is an adjustment state diagram of the push block in the embodiment; Figure 5 The diagram shown illustrates the installation location of the push block in the embodiment.

[0014] In the diagram: 10. Fixed base; 20. Rotary ring; 30. Detection module; 41. Straight rack; 42. Drive gear; 43. Arc rack; 51. Connecting block; 52. Trapezoidal groove; 53. Push block; 61. Steering mechanism; 62. Circumferential-to-linear conversion mechanism; 63. Moving frame; 64. Soft clamping wheel; 65. Linear drive component. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings. Example

[0016] Figures 1-5 A continuous quality inspection device for a cable production line includes: A fixed base 10 is provided, and a rotating ring 20 is rotatably sleeved on the outer side of the fixed base 10. A double torsion spring is provided between the rotating ring 20 and the fixed base 10. Multiple detection modules 30 are fixedly installed on the rotating ring 20. In addition to a CCD camera, the detection modules 30 are also equipped with a laser rangefinder, a laser contour scanner, an ultrasonic flaw detector, a high-brightness supplementary light source, an edge detection sensor, and other equipment. In this technical solution, the number of detection modules 30 is two. The two sets of reciprocating detection modules 30 can meet the detection requirements of the cable circumference. While ensuring the detection effect, compared with using three or more sets of detection modules 30, it can effectively simplify the device structure, reduce the overall weight, and reduce the requirements for driving power. It is more suitable to rely on the cable's travel power to achieve stable drive. The reciprocating oscillating assembly includes a rack 41, a drive gear 42 rotatably inserted into the fixed base 10 in the middle of the rack 41, and an arc-shaped rack 43 fixedly connected to the rotating ring 20 on one side of the drive gear 42. The self-adjusting component includes a connecting block 51 fixed to the end of the rack 41. The connecting block 51 has a trapezoidal groove 52 inside. The center line of the trapezoidal groove 52 is perpendicular to the rack 41. A pushing block 53 is movably inserted into the trapezoidal groove 52. The pushing block 53 is located on the center line of the trapezoidal groove 52 and reciprocates in the direction of the rack 41. When the push block 53 reciprocates, it first slides without travel and then pushes the connecting block 51 and the rack 41 against the inner wall of the trapezoidal groove 52. Through the drive gear 42 and the arc rack 43, the rotating ring 20 is driven to reciprocate and deflect. The multiple detection modules 30 rotate accordingly to change the detection direction. When the cable diameter changes, the push block 53 is adjusted in the direction of the center line of the trapezoidal groove 52. With the help of the tapered structure of the trapezoidal groove 52, the effective stroke of the push block 53 changes accordingly, and the reciprocating movement distance of the rack 41 is automatically adjusted to change the maximum deflection distance of the detection module 30.

[0017] By using the rotating ring 20 to drive the detection module 30 to swing back and forth, the image acquisition angle can be flexibly adjusted to capture areas perpendicular to the monitoring angle under a fixed viewpoint, as well as various visual blind spots. This allows for the detection of appearance defects in hidden locations on the outer wall of the cable, eliminating blind spots in fixed-point shooting and significantly improving the defect detection rate. On this basis, a trapezoidal groove structure with gradually changing width 52 is added, which can automatically change the effective pushing stroke of the push block 53 based on the change of the cable's outer diameter. This allows for autonomous adjustment of the swing amplitude of the detection module 30, eliminating the need for manual adjustment and electrical control parameter setting. Relying on mechanical linkage, it can match different cables of different thicknesses in real time. For thicker cables, the swing angle can be automatically increased to effectively expand the detection coverage area and better adapt to the circumferential detection needs of large-diameter cables, improving the integrity of the detection area. For thinner cables, the swing angle can be automatically reduced to adapt to the precise detection field of view, avoiding resource waste caused by ineffective acquisition and further improving the overall efficiency of continuous inspection on the production line and the equipment's adaptability to the environment.

[0018] Figures 1-5 The system also includes a synchronous drive assembly, which includes a steering mechanism 61, a circumferential linear conversion mechanism 62, and two sets of moving frames 63. The two moving frames 63 move toward or in opposite directions toward the center of the rotating ring 20. A flexible clamping wheel 64 for clamping cables is rotatably inserted through the middle of the moving frame 63. The outer wall of the flexible clamping wheel 64 is covered with an elastic wear-resistant protective pad. The input end of the steering mechanism 61 is connected to the rotating shaft of the flexible clamping wheel 64, and the output end of the steering mechanism 61 is connected to the input end of the circumferential linear conversion mechanism 62. The push block 53 is fixedly connected to the output end of the circumferential linear conversion mechanism 62. Two sets of moving frames 63 move towards each other, causing the flexible clamping wheels 64 to clamp cables of different outer diameters. The friction of the cables driving the flexible clamping wheels 64 to rotate and output power, which is then driven by the steering mechanism 61 and the circumferential linear conversion mechanism 62 to drive the push block 53 to complete the reciprocating motion. When the cable diameter changes, the synchronous drive assembly moves as a whole and drives the push block 53 to move along the center line of the trapezoidal groove 52 to complete the position adjustment.

[0019] The flaring direction of the trapezoidal groove 52 is the same as the moving direction of the moving frame 63 toward the cable. The larger the cable diameter, the smaller the diameter of the flaring groove 52, the shorter the idle sliding distance, and the larger the effective stroke. The smaller the cable diameter, the larger the diameter of the flaring groove 53, the longer the idle sliding distance, and the smaller the effective stroke.

[0020] The steering mechanism 61 is a bevel gear reversing transmission mechanism with different diameters. It forms a differentiated transmission ratio based on two bevel gears with different diameters and numbers of teeth. The transmission ratio is increased by the bevel gear reversing transmission mechanism, so that the reciprocating frequency of the push block 53 is increased when the cable travels the same distance, thereby changing the reciprocating oscillation frequency of the rotating ring 20 and the detection module 30. Alternatively, a composite transmission structure with an adjustable transmission ratio can be used, which can adjust the rotation ratio according to the diameter change. When adapting to small diameter cables, it can reduce the impact of idle time. Even if there is a short idle time, the detection range of the front and rear oscillation cycles will form a reasonable overlap. The cable area corresponding to the idle time can be effectively included by the adjacent detection field of view, ensuring that the detection process of small diameter cables is continuous, stable and without omissions.

[0021] The circumferential linear conversion mechanism 62 is a crank-slider mechanism used to convert the continuous rotational motion output by the steering mechanism 61 into linear reciprocating motion along the extension direction of the rack 41.

[0022] It also includes a linear drive unit 65, which is fixedly installed on the fixed base 10. The output end of the linear drive unit 65 is connected to two sets of movable frames 63, which are used to drive the two sets of movable frames 63 to achieve opposite clamping and reverse separation actions.

[0023] The linear drive component 65 is a cylinder drive assembly or an electric lead screw slide.

[0024] Power is generated by the friction between the cable and the flexible clamping wheel 64 as the cable moves. Only when the cable moves forward can the clamping wheel be rotated to transmit power, driving the detection module 30 to perform reciprocating swing detection. At the same time, during the process of completing the cable clamping and positioning, the push block 53 is simultaneously driven to complete the position shift. It works in precise coordination with the gradual structure of the trapezoidal groove 52 to smoothly complete the adaptive adjustment of the swing amplitude. This couples the cable clamping, power synchronization and swing angle adjustment, further enhancing the overall adaptive detection effect of the equipment.

[0025] Working principle: The linear drive unit 65 drives two sets of moving frames 63 to move towards each other towards the center of the cable, so that the flexible clamping wheels 64 mounted on the moving frames 63 tightly clamp the cable's outer wall. The elastic wear-resistant protective pad on the outer wall of the flexible clamping wheels 64 ensures a good clamping fit and avoids squeezing and scratching the cable's surface. As the cable moves forward at a constant speed along the production line, the rolling friction between the cable's outer wall and the flexible clamping wheels 64 directly drives the flexible clamping wheels 64 to rotate synchronously. The rotation of the flexible clamping wheels 64 generates a vortex. The rotational power is directly input into the steering mechanism 61, which employs a bevel gear reversing transmission structure. Relying on the meshing of two sets of bevel gears with different diameters and tooth numbers to form a differentiated transmission ratio, it can not only change the original direction of power transmission but also increase the rotational speed using the transmission ratio difference. The power after reversal and speed increase is then delivered to the circumferential linear conversion mechanism 62. The circumferential linear conversion mechanism 62, composed of a crank-slider mechanism, smoothly converts the input continuous rotational motion into linear reciprocating motion along the extension direction of the spur rack 41, thereby driving the... The push block 53 connected to it moves back and forth in a straight line synchronously. During the reciprocating motion, the push block 53 will first complete a section of idle sliding until its side wall abuts against the inner wall of the trapezoidal groove 52 inside the connecting block 51. Then, it can push the connecting block 51 and the rack 41 fixedly connected to the connecting block 51 to move back and forth in a straight line synchronously. During the reciprocating movement of the rack 41, it will drive the drive gear 42, which meshes with it and is rotatably mounted inside the fixed base 10, to rotate alternately in forward and reverse directions. The drive gear 42 further drives the arc rack 43 to swing synchronously through meshing transmission, and finally... The rotating ring 20, which is fixedly connected to the arc-shaped rack 43, is driven to complete circumferential reciprocating deflection with the fixed base 10 as the reference. Multiple detection modules 30, which are fixedly installed on the rotating ring 20, deflect synchronously with the rotating ring 20, thereby continuously switching the image acquisition orientation and completing the visual inspection of all-round appearance defects on the outer wall of the cable. The double torsion spring arranged between the fixed base 10 and the rotating ring 20 can drive the rotating ring 20 to quickly return to the center initial position by its own elastic force after a single deflection scan action is completed, ensuring that the starting reference of each round of scanning inspection remains consistent. When the production line changes to cables with different outer diameters, the two sets of moving frames 63, which are supported and squeezed by the cable, will adapt their positions accordingly. This will cause the entire synchronous drive assembly to move synchronously, thereby causing the push block 53 to adjust its position along the centerline of the trapezoidal groove 52. Since the flaring direction of the trapezoidal groove 52 is consistent with the moving direction of the moving frame 63 towards the cable, when the outer diameter of the cable increases, the push block 53 moves towards the narrowing side of the flaring of the trapezoidal groove 52. The groove diameter at its location is smaller, and the idle sliding distance of the push block 53 during its movement is shortened accordingly. The effective pushing stroke that can directly act on the connecting block 51 is correspondingly increased, which increases the reciprocating movement distance of the rack 41. The maximum reciprocating deflection angle of the rotating ring 20 and the detection module 30 is increased by adding more power. Conversely, when the outer diameter of the cable decreases, the pushing block 53 moves towards the widened side of the trapezoidal groove 52, the diameter of the groove increases, the idle sliding distance increases, the effective pushing stroke decreases, the reciprocating movement distance of the straight rack 41 decreases simultaneously, and the maximum deflection angle of the detection module 30 automatically decreases accordingly, adapting to the detection field requirements of small-diameter cables. The entire set of equipment relies on a pure mechanical linkage structure, without the need for additional electrical control adjustment components or manual debugging operations, and can realize the fully automatic adaptive adjustment of the scanning deflection angle of the detection module according to the outer diameter of the cable, continuously and stably completing the continuous online appearance quality inspection of the cable production line.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A continuous quality inspection device for a cable production line, characterized in that, include: A fixed base (10) is provided with a rotating ring (20) rotatably sleeved on the outside of the fixed base (10). A double torsion spring is provided between the rotating ring (20) and the fixed base (10). Multiple detection modules (30) are fixedly installed on the rotating ring (20). The reciprocating oscillating assembly includes a rack (41), a drive gear (42) that is rotatably inserted into the fixed base (10) is meshed in the middle of the rack (41), and an arc-shaped rack (43) that is fixedly connected to the rotating ring (20) is meshed on one side of the drive gear (42). The self-adjusting component includes a connecting block (51) fixed to the end of a rack (41). A trapezoidal groove (52) is provided inside the connecting block (51). The center line of the trapezoidal groove (52) is perpendicular to the rack (41). A pushing block (53) is movably inserted into the trapezoidal groove (52). The pushing block (53) is located on the center line of the trapezoidal groove (52) and moves back and forth in the direction of the rack (41). When the push block (53) moves back and forth, it first slides without travel and then pushes the connecting block (51) and the rack (41) against the inner wall of the trapezoidal groove (52). Through the drive gear (42) and the arc rack (43), the rotating ring (20) is driven to deflect back and forth. Multiple detection modules (30) rotate accordingly to change the detection direction. When the cable diameter changes, the push block (53) is adjusted in the center line direction of the trapezoidal groove (52). With the help of the tapered structure of the trapezoidal groove (52), the effective stroke of the push block (53) changes accordingly. The reciprocating movement distance of the rack (41) is automatically adjusted to change the maximum deflection distance of the detection module (30).

2. The continuous quality inspection equipment for a cable production line according to claim 1, characterized in that, It also includes a synchronous drive assembly, which includes a steering mechanism (61), a circumferential linear conversion mechanism (62), and two sets of moving frames (63). The two moving frames (63) move toward or in opposite directions toward the center of the rotating ring (20). A flexible clamping wheel (64) for clamping the cable is rotatably inserted through the middle of the moving frame (63). The input end of the steering mechanism (61) is connected to the rotating shaft of the flexible clamping wheel (64). The output end of the steering mechanism (61) is connected to the input end of the circumferential linear conversion mechanism (62). The push block (53) is fixedly connected to the output end of the circumferential linear conversion mechanism (62). Two sets of moving frames (63) move towards each other so that the flexible clamping wheels (64) clamp cables of different outer diameters. The friction of the cable travel drives the flexible clamping wheels (64) to rotate and output power. The power is then driven by the steering mechanism (61) and the circumferential linear conversion mechanism (62) to drive the push block (53) to complete the reciprocating motion. When the cable diameter changes, the synchronous drive assembly moves as a whole and drives the push block (53) to move along the center line of the trapezoidal groove (52) to complete the position adjustment.

3. The continuous quality inspection equipment for a cable production line according to claim 2, characterized in that, The flaring direction of the trapezoidal groove (52) is the same as the moving direction of the moving frame (63) toward the cable. The larger the cable diameter, the smaller the diameter of the flaring groove (52) at the position of the push block (53), the shorter the idle sliding distance and the larger the effective stroke. The smaller the cable diameter, the larger the diameter of the flaring groove (52) at the position of the push block (53), the longer the idle sliding distance and the smaller the effective stroke.

4. A continuous quality inspection device for a cable production line according to claim 2, characterized in that, The steering mechanism (61) is a bevel gear reversing transmission mechanism with different diameters, which forms a differentiated transmission ratio based on two bevel gears with different diameters and numbers of teeth that mesh together.

5. A continuous quality inspection device for a cable production line according to claim 2, characterized in that, The circumferential linear conversion mechanism (62) is a crank-slider mechanism used to convert the continuous rotational motion output by the steering mechanism (61) into linear reciprocating motion along the extension direction of the rack (41).

6. A continuous quality inspection device for a cable production line according to claim 2, characterized in that, It also includes a linear drive (65), which is fixedly installed on a fixed base (10). The output end of the linear drive (65) is connected to two sets of movable frames (63) to drive the two sets of movable frames (63) to achieve opposite clamping and reverse separation actions.

7. A continuous quality inspection device for a cable production line according to claim 6, characterized in that, The linear drive (65) is a cylinder drive assembly or an electric lead screw slide.

8. A continuous quality inspection device for a cable production line according to claim 1, characterized in that, The outer wall of the soft clamping wheel (64) is covered with an elastic wear-resistant protective pad.

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