On-line size and surface defect detection device for cable

Abstract

The utility model relates to a cable on-line size and surface defect detection device, which belongs to the technical field of cable production and comprises a fixing frame, an optical size measuring assembly, a visual defect detection assembly and a first light source. The optical dimension measuring assembly and the visual defect detecting assembly are fixed to the two sides of the fixing frame respectively, the first light source is fixed to the fixing frame, and the purpose is to improve the accuracy of cable detection.

Description

Technical Field

[0001] The utility model relates to the technical field of cable production, in particular to an on-line size and surface defect detection device for cables. Background Technique

[0002] During the production process of cables, due to many reasons such as the uneven surface of the die sleeve, too small aperture of the die sleeve, or the increase of the aperture after the die sleeve is worn, etc., it is easy to cause appearance defects during cable production.

[0003] At present, the detection of cable surface defects generally can detect the bulges, pits, uneven diameters, scratches, etc. of the cable. However, when foreign matters (such as filaments and particulate matters) adhere to the surface of the cable, they will also be marked as crack or bulge defects by the detection device. Therefore, the detected cable defects do not match the actual cable defects, which is likely to cause users to misjudge the quality of the cable and reduce the accuracy of the detection results.

[0004] Therefore, an on-line size and surface defect detection device for cables is provided to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The technical problem solved by the utility model is how to improve the accuracy of cable detection.

[0006] The technical solution for the utility model to solve the above technical problems is as follows: an on-line size and surface defect detection device for cables, including a fixed frame, an optical size measurement component, a visual defect detection component, and a first light source. The fixed frame has a first through hole. The optical size measurement component and the visual defect detection component are respectively fixed on both sides of the fixed frame, and the first light source is fixed on the fixed frame.

[0007] The beneficial effect of the utility model is that when the cable to be measured moves through the first light source and the first through hole of the fixed frame, the first light source provides uniform illumination for the visual defect detection component.

[0008] The optical size measurement component and the visual defect detection component are respectively fixed on both sides of the fixed frame, and can simultaneously detect the size and surface defects of the cable to be measured, so as to distinguish whether it is an actual defect, improve the accuracy of cable detection, avoid misreporting the attachments of the cable to be measured as actual defects, and reduce the false detection rate or missed detection rate of the detection.

[0009] Based on the above technical solutions, the utility model can be further improved as follows.

[0010] Further, the optical size measurement component includes multiple groups of size measurement camera groups. The multiple groups of size measurement camera groups are evenly distributed along the circumferential direction of the first through hole and are fixedly connected to one side of the fixed frame.

[0011] The beneficial effects of adopting the above further solution are as follows: The multiple groups of size measurement camera groups can measure the size of the cable to be measured from multiple angles, avoiding detection blind spots and improving the accuracy of cable size detection.

[0012] Further, each group of the size measurement camera groups includes a first camera and a second light source, and the first camera and the second light source are circumferentially spaced 180° along the first through hole and are arranged facing each other.

[0013] The beneficial effects of adopting the above further solution are as follows: Both the first camera and the second light source are fixedly spaced on the fixing frame, which can avoid the shaking of the first camera and the second light source and increase the stability of image capture by the first camera. The second light source is arranged facing the first camera, which can provide uniform illumination for the first camera and improve the accuracy of cable detection.

[0014] Further, there are two groups of the size measurement camera groups, and the two groups of the size measurement camera groups are arranged perpendicular to each other.

[0015] The beneficial effects of adopting the above further solution are as follows: The two groups of size measurement camera groups can be used to detect the length and width of the cable.

[0016] Further, the visual defect detection component includes multiple groups of defect detection camera groups, and the multiple groups of defect detection camera groups are evenly distributed circumferentially along the first through hole and are fixedly connected to the other side of the fixing frame.

[0017] The beneficial effects of adopting the above further solution are as follows: The multiple groups of defect detection camera groups can detect the surface defects of the cable to be measured from multiple angles, avoiding detection blind spots and improving the accuracy of cable surface defect detection.

[0018] Further, each group of the defect detection camera groups includes a support plate, a moving component, and a second camera. The support plates are circumferentially spaced along the first through hole and are fixedly connected to the other side of the fixing frame. The support plates are fixedly connected to the moving component, and the driving end of the moving component is connected to the second camera.

[0019] The beneficial effects of adopting the above further solution are as follows: The moving component on the support plate can drive the second camera to move back and forth along the axis of the moving component to focus the second camera, avoiding the situation where the second camera cannot focus when the cable to be measured is offset, resulting in unclear surface defect images of the cable to be measured.

[0020] Further, the moving component includes a motor, a lead screw, a slider, and a fixed frame. One end of the fixed frame is fixedly connected to the support plate. The motor is fixedly connected to one side of the fixed frame. The lead screw is rotatably connected to the fixed frame. The output end of the motor passes through the fixed frame and is in transmission connection with the lead screw. The slider is sleeved outside the lead screw and is in threaded transmission connection with the lead screw. The slider is slidably matched with the fixed frame, and the second camera is fixed on the slider.

[0021] The beneficial effect of adopting the above further scheme is that the driving motor can drive the slider to move back and forth along the axis of the lead screw, and then drive the second camera to move back and forth along the axis of the lead screw to achieve the focusing of the second camera.

[0022] Further, the lead screw is arranged along the radial direction of the first through hole, and one end facing the center of the first through hole is inclined towards the direction of the first through hole.

[0023] Further, there are four groups of defect detection camera groups, and the interval between adjacent two groups of defect detection camera groups is 90°.

[0024] The beneficial effect of adopting the above further scheme is that the four groups of defect detection camera groups can detect the surfaces of the cable to be measured in the up, down, left, and right directions.

[0025] Further, the first light source is an annular light source, and the first light source is coaxially arranged with the first through hole.

[0026] The beneficial effect of adopting the above further scheme is that the annular light source can provide uniform illumination, making the light distribution on the surface of the cable to be measured more uniform, reducing the influence of shadows and reflections, and improving the detection accuracy of the optical dimension measurement component and the visual defect detection component. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the detection device of the present invention;

[0028] Figure 2 is a partial structural diagram of the detection device of the present invention;

[0029] Figure 3 is a rear view of the detection device of the present invention;

[0030] Figure 4 is Figure 3 a partial schematic diagram at A in

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1. Fixed frame; 101. First through hole; 2. Optical dimension measurement component; 201. First camera; 202. Second light source; 203. Fixed block; 3. Visual defect detection component; 301. Support plate; 302. Moving component; 3021. Motor; 3022. Lead screw; 3023. Slide block; 3024. Fixed frame; 303. Second camera; 4. First light source; 5. Fixed rod; 6. Cable under test. Detailed implementation manner

[0033] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0034] As Figures 1 - 4 shown, this embodiment provides a device for on-line dimension and surface defect detection of a cable, including a fixed frame 1, an optical dimension measurement component 2, a visual defect detection component 3, and a first light source 4. The fixed frame 1 has a first through hole 101. The optical dimension measurement component 2 and the visual defect detection component 3 are respectively fixed on both sides of the fixed frame 1, and the first light source 4 is fixed on the fixed frame 1.

[0035] When the cable under test 6 moves through the first through hole 101 of the first light source 4 and the fixed frame 1, the first light source 4 provides uniform illumination for the visual defect detection component 3.

[0036] The optical dimension measurement component 2 and the visual defect detection component 3 are respectively fixed on both sides of the fixed frame 1, and the size and surface defects of the cable under test 6 can be detected simultaneously, so as to distinguish whether it is an actual defect, improve the accuracy of cable detection, avoid misreporting the attachments of the cable under test 6 as actual defects, and reduce the false detection rate or missed detection rate of the detection.

[0037] Specifically, as Figure 1 shown, the first light source 4 is fixed on one side of the fixed frame 1, and the optical dimension measurement component 2 is located between the fixed frame 1 and the first light source 4.

[0038] Optionally, the first light source 4 is fixed on the other side of the fixed frame 1, so that the visual defect detection component 3 is located between the fixed frame 1 and the first light source 4.

[0039] Specifically, as Figure 1 shown, it further includes a plurality of fixed rods 5. The plurality of fixed rods 5 are circumferentially arranged at intervals on one side of the first through hole 101. One end of the fixed rod 5 is fixedly connected to the first light source 4, and the other end of the fixed rod 5 is fixedly connected to one side of the fixed frame 1.

[0040] Among them, in this embodiment, there are four fixed rods 5.

[0041] Based on the above solution, the optical size measurement component 2 includes multiple groups of size measurement camera groups. The multiple groups of size measurement camera groups are evenly distributed along the circumference of the first through hole 101 and are fixedly connected to one side of the fixing frame 1.

[0042] The multiple groups of size measurement camera groups can measure the size of the cable 6 to be measured from multiple angles, avoiding detection blind spots and improving the accuracy of cable size detection.

[0043] Specifically, according to the actual situation, one group or multiple groups of size measurement camera groups can be set.

[0044] Based on the above solution, each group of size measurement camera groups includes a first camera 201 and a second light source 202. The first camera 201 and the second light source 202 are arranged at an interval of 180° along the circumference of the first through hole 101 and face each other.

[0045] Both the first camera 201 and the second light source 202 are fixedly spaced from the fixing frame 1, which can avoid the shaking of the first camera 201 and the second light source 202 and increase the stability of image capture by the first camera 201. The second light source 202 is arranged facing the first camera 201, which can provide uniform illumination for the first camera 201 and improve the accuracy of cable detection.

[0046] Specifically, it further includes multiple fixing blocks 203. The fixing blocks 203 are sleeved outside the second light source 202 and are fixedly connected to one side of the fixing frame 1, facilitating the fixation of the second light source 202 and improving the stability of the light source.

[0047] Among them, in this embodiment, the lens of the first camera 201 of each group of size measurement camera groups faces the light emitting surface of the second light source 202. The second light source 202 provides good lighting conditions for the first camera 201 and improves the accuracy of detecting the size of the cable 6 to be measured.

[0048] Specifically, the first camera 201 can be a line array camera or a area array camera.

[0049] Based on the above solution, there are two groups of size measurement camera groups, and the two groups of size measurement camera groups are perpendicularly arranged.

[0050] The two groups of size measurement camera groups can be used to detect the length and width of the cable.

[0051] Specifically, the two groups of size measurement camera groups are spaced 90° along the circumference of the first through hole 101.

[0052] Specifically, if the cable 6 to be measured is a circular cable, only one group or more than two groups of size measurement camera groups can be set to measure the diameter of the circular cable.

[0053] If the cable 6 to be measured is a flat cable, only two sets of dimension measurement camera groups perpendicular to each other can be set to measure the length and width of the flat cable.

[0054] Based on the above solution, the vision defect detection component 3 includes multiple groups of defect detection camera groups, and the multiple groups of defect detection camera groups are evenly distributed along the circumference of the first through hole 101 and are fixedly connected to the other side of the fixing frame 1.

[0055] The multiple groups of defect detection camera groups can detect the surface defects of the cable 6 to be measured from multiple angles, avoid detection blind spots, and improve the accuracy of detecting the surface defects of the cable.

[0056] Based on the above solution, each group of defect detection camera groups includes a support plate 301, a moving component 302, and a second camera 303. The support plates 301 are arranged at intervals along the circumference of the first through hole 101 and are fixedly connected to the other side of the fixing frame 1. The support plate 301 is fixedly connected to the moving component 302, and the driving end of the moving component 302 is connected to the second camera 303.

[0057] The moving component 302 on the support plate 301 can drive the second camera 303 to move back and forth along the axis of the moving component 302 to focus the second camera 303, so as to avoid the situation where the second camera 303 cannot focus when the cable 6 to be measured is offset, resulting in unclear surface defect images of the cable 6 to be measured being obtained.

[0058] Specifically, the second camera 303 can be a line array camera or a area array camera.

[0059] Based on the above solution, the moving component 302 includes a motor 3021, a lead screw 3022, a slider 3023, and a fixing frame 3024. One end of the fixing frame 3024 is fixedly connected to the support plate 301. The motor 3021 is fixedly connected to one side of the fixing frame 3024. The lead screw 3022 is rotatably connected to the fixing frame 3024. The output end of the motor 3021 passes through the fixing frame 3024 and is in transmission connection with the lead screw 3022. The slider 3023 is sleeved outside the lead screw 3022 and is in threaded transmission connection with the lead screw 3022. The slider 3023 is slidably matched with the fixing frame 3024, and the second camera 303 is fixed on the slider 3023.

[0060] By driving the motor 3021, the slider 3023 can be driven to move back and forth along the axis of the lead screw 3022, and then the second camera 303 can be driven to move back and forth along the axis of the lead screw 3022 to achieve the focusing of the second camera 303.

[0061] Specifically, the two second cameras 303 on the same axis have a fixed distance from the cable 6 to be measured. When the cable 6 to be measured is displaced, the motor 3021 can drive the second camera 303 on the displaced axis to move until the distance between the second camera 303 and the cable 6 to be measured remains unchanged, achieving focusing of the second camera 303 and improving the accuracy of detection.

[0062] Among them, as Figure 3 shown, the two moving components 302 arranged along the length direction of the fixing frame 1 are inclined with respect to the fixing frame 1, and the two moving components 302 arranged along the width direction of the fixing frame 1 are inclined with respect to the fixing frame 1.

[0063] When the cable 6 to be measured moves along the length direction of the fixing frame 1, one of the moving components 302 arranged along the length direction of the fixing frame 1 drives the second camera 303 to move upward, and the other moving component 302 arranged along the length direction of the fixing frame 1 drives the second camera 303 to move downward, ensuring that the distances between the two second cameras 303 arranged along the length direction of the fixing frame 1 and the cable 6 to be measured remain unchanged. At this time, the moving components 302 arranged along other axes remain stationary.

[0064] When the cable 6 to be measured moves along the width direction of the fixing frame 1, one of the moving components 302 arranged along the width direction of the fixing frame 1 drives the second camera 303 to move leftward, and the other moving component 302 arranged along the width direction of the fixing frame 1 drives the second camera 303 to move rightward, ensuring that the distances between the two second cameras 303 arranged along the width direction of the fixing frame 1 and the cable 6 to be measured remain unchanged. At this time, the two moving components 302 arranged along other axes remain stationary.

[0065] Specifically, as Figure 3 shown, the two moving components 302 arranged along the length direction of the fixing frame 1 are inclined with respect to the fixing frame 1, and the two moving components 302 arranged along the width direction of the fixing frame 1 are inclined with respect to the fixing frame 1, which can be used to measure the cable 6 to be measured with a reflective or bright surface color;

[0066] Optionally, when the surface color of the cable 6 to be measured is dark, the two moving components 302 arranged along the length direction of the fixing frame 1 can be arranged at an interval of 180° circumferentially along the first through hole 101 and facing each other, and the two moving components 302 arranged along the width direction of the fixing frame 1 are arranged at an interval of 180° circumferentially along the first through hole 101 and facing each other.

[0067] On the basis of the above solution, the lead screw 3022 is arranged radially along the first through hole 101, and the end facing the center of the first through hole 101 is inclined towards the direction of the first through hole 101.

[0068] Based on the above solution, the defect detection camera groups are four groups, and the interval between two adjacent defect detection camera groups is 90°.

[0069] The four groups of defect detection camera groups can detect the surfaces of the cable 6 to be measured in the up, down, left, and right directions.

[0070] Specifically, the defect detection camera groups can also be set to six groups, and the interval between two adjacent defect detection camera groups is 60°, for a more comprehensive detection of the outer wall of the cable 6 to be measured.

[0071] Based on the above solution, the first light source 4 is an annular light source, and the first light source 4 is coaxially arranged with the first through hole 101.

[0072] The annular light source can provide uniform illumination, making the light distribution on the surface of the cable 6 to be measured more uniform, reducing the influence of shadows and reflections, and improving the detection accuracy of the optical dimension measurement component 2 and the visual defect detection component 3.

[0073] Specifically, the first light source 4 can be a strip light source, and the strip light source has a through hole to facilitate the cable 6 to be measured to pass through the through hole.

[0074] Among them, the size and area of the strip light source have great flexibility. The staff can select strip light sources of different sizes and areas, which can control the cost of the device.

[0075] In this embodiment, when in use, first, start the first light source 4 and the second light source 202; secondly, the cable 6 to be measured moves through the first light source 4 and the first through hole 101. The first camera 201 acquires the size image of the cable 6 to be measured, and the second camera 303 acquires the surface defect image of the cable 6 to be measured, so as to comprehensively compare and judge whether the detected defect is an actual defect.

[0076] When the cable 6 to be measured is offset during the movement, start the moving component 302 arranged along the offset axis. The motor 3021 drives the second camera 303 to move along the offset axis, so that the distance between the second camera 303 and the cable 6 to be measured remains unchanged, avoiding the situation of defocusing of the second camera 303 during the detection process.

[0077] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0078] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0079] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0080] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0081] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0082] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An on-line size and surface defect detection device for cables, characterized in that, It includes a fixing frame (1), an optical dimension measurement component (2), a visual defect detection component (3), and a first light source (4). The fixing frame (1) has a first through hole (101). The optical dimension measurement component (2) and the visual defect detection component (3) are respectively fixed on both sides of the fixing frame (1), and the first light source (4) is fixed on the fixing frame (1).

2. The on-line size and surface defect detection device for a cable according to claim 1, characterized in that, The optical dimension measurement component (2) includes multiple groups of dimension measurement camera groups. The multiple groups of dimension measurement camera groups are evenly distributed along the circumferential direction of the first through hole (101) and are fixedly connected to one side of the fixing frame (1).

3. The on-line size and surface defect detection device for cables according to claim 2, wherein, Each group of dimension measurement camera groups includes a first camera (201) and a second light source (202). The first camera (201) and the second light source (202) are spaced 180° along the circumferential direction of the first through hole (101) and are arranged facing each other.

4. The on-line size and surface defect detection device for a cable according to claim 2, characterized in that, There are two groups of dimension measurement camera groups, and the two groups of dimension measurement camera groups are arranged perpendicular to each other.

5. The on-line size and surface defect detection device for a cable according to claim 1, characterized in that, The visual defect detection component (3) includes multiple groups of defect detection camera groups. The multiple groups of defect detection camera groups are evenly distributed along the circumferential direction of the first through hole (101) and are fixedly connected to the other side of the fixing frame (1).

6. The on-line size and surface defect detection device for a cable according to claim 5, characterized in that, Each group of defect detection camera groups includes a support plate (301), a moving component (302), and a second camera (303). The support plate (301) is arranged at intervals along the circumferential direction of the first through hole (101) and is fixedly connected to the other side of the fixing frame (1). The support plate (301) is fixedly connected to the moving component (302), and the driving end of the moving component (302) is connected to the second camera (303).

7. The on-line wire and cable size and surface defect detection device according to claim 6, characterized in that, The moving component (302) includes a motor (3021), a lead screw (3022), a slider (3023), and a fixed frame (3024). One end of the fixed frame (3024) is fixedly connected to the support plate (301). The motor (3021) is fixedly connected to one side of the fixed frame (3024). The lead screw (3022) is rotatably connected to the fixed frame (3024). The output end of the motor (3021) passes through the fixed frame (3024) and is in transmission connection with the lead screw (3022). The slider (3023) is sleeved outside the lead screw (3022) and is in threaded transmission connection with the lead screw (3022). The slider (3023) is slidably matched with the fixed frame (3024), and the second camera (303) is fixed on the slider (3023).

8. The on-line size and surface defect detection device for a cable according to claim 7, wherein, The lead screw (3022) is arranged along the radial direction of the first through hole (101), and the end facing the center of the first through hole (101) is inclined towards the direction of the first through hole (101).

9. The on-line size and surface defect detection device for a cable according to claim 5, characterized in that, There are four groups of defect detection camera groups, and the adjacent two groups of defect detection camera groups are spaced 90°.

10. The on-line size and surface defect detection device for a cable according to any one of claims 1 to 9, characterized in that, The first light source (4) is an annular light source, and the first light source (4) is coaxially arranged with the first through hole (101).

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