Electromagnetic wire surface flaw detection device

Abstract

The utility model relates to the technical field of detection equipment, in particular to an electromagnetic wire surface flaw detection device which comprises a bottom plate, a shooting mechanism, an electromagnetic wire, a torsion mechanism and a light supplementing piece, an operator firstly twists the part of the electromagnetic wire by using the twisting mechanism, then irradiates the twisting area by using the light supplementing piece, and then performs oblique shooting through the shooting mechanism, so that the operator can more clearly see that the flaw is subjected to diffuse reflection under the light source and determine the position of the flaw, and meanwhile, the use number of high-speed cameras can be reduced; only two devices are needed to complete the detection of the periphery of the electromagnetic wire, the use efficiency is greatly improved, the cost is reduced, the practicability and economical efficiency are better, and the popularization and use of the device are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a surface flaw detection device for electromagnetic wires. Background Art

[0002] Surface flaws such as bulges and scars on the surface of electromagnetic wires during production, if the defects cannot be directly detected and eliminated during production, will directly affect the product quality of electromagnetic wires, resulting in quality complaints when transferred to customers later, bringing great losses to the manufacturer.

[0003] Since some electromagnetic wires use wide wires with a rectangular cross-section, four high-speed cameras are required for continuous shooting and detection in a vertical plane for a long time during the detection process, and the use cost is relatively high. At the same time, if the flaw is relatively flat, such as a vertical defect, it is very easy to produce misjudgment when the high-speed camera shoots vertically, which is not conducive to the use of electromagnetic wires. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a surface flaw detection device for electromagnetic wires with a relatively low cost, which can complete the detection of all four sides with a small number of high-speed cameras, and at the same time effectively avoid the problem of misjudgment of flaws caused by the influence of vertical flat flaws on plane shooting.

[0005] The technical solution adopted by the utility model is as follows: a surface flaw detection device for electromagnetic wires, including

[0006] a bottom plate for supporting the equipment structure;

[0007] an electromagnetic wire, with the middle part of the electromagnetic wire twisted, and the twisting angle of the detection area in the middle part of the electromagnetic wire being 90°;

[0008] a shooting mechanism, the shooting mechanism includes a shooting support frame, the shooting support frame is arranged above the bottom plate, two groups of high-speed cameras are arranged on the shooting support frame, the two groups of high-speed cameras are symmetrically arranged in the middle of the shooting support frame, and the intersection point of the extension lines of the shooting directions of the two groups of high-speed cameras points to the center of twist of the electromagnetic wire.

[0009] In one embodiment, a connecting hinge is provided between the periphery of the high-speed camera and the shooting support frame. On the side of the shooting support frame away from the bottom plate, there is a fixing plate. At the end of the high-speed camera, there is a sliding block. The sliding block has a U-shaped structure. One end of the sliding block away from the opening is rotatably connected to the high-speed camera. In the middle of the fixing plate, there is an adjusting screw rod. The adjusting screw rod is rotatably connected to the fixing plate. At one end of the adjusting screw rod close to the sliding block, there is a first buckling ring and a second buckling ring. There is a gap between the first buckling ring and the second buckling ring. The sliding block passes through the gap between the first buckling ring and the second buckling ring and is penetrated by the adjusting screw rod.

[0010] In one embodiment, a supplementary lighting component is provided on the side of the shooting support frame close to the torsion center of the electromagnetic wire. The supplementary lighting component includes a lighting support frame. A number of light-emitting beads are provided on the lighting support frame. The light-emitting beads surround the outer periphery of the electromagnetic wire.

[0011] In one embodiment, torsion mechanisms are provided at both ends of the torsion area of the electromagnetic wire. The torsion mechanism includes a torsion ring. An annular array of single teeth is provided on the outer periphery of the torsion ring. Two groups of connecting plates are provided in the middle of the torsion ring. The two groups of connecting plates are symmetrically arranged. Two groups of movable grooves are provided on the connecting plates. The two groups of movable grooves are symmetrically arranged. A rotating rod is provided between the opposite movable grooves on the two groups of connecting plates. A conveying wheel is provided in the middle of the rotating rod.

[0012] In one embodiment, the conveying wheel is made of rubber to prevent the electromagnetic wire from being scratched.

[0013] In one embodiment, a number of support blocks are further provided on the bottom plate. A driving motor is provided on the support block. A twisting gear is provided on the rotating shaft of the driving motor. The twisting gear meshes with the single teeth on the outer periphery of the torsion ring. A number of groove limit blocks are further provided on the bottom plate. The recess of the groove limit block buckles the outer periphery of the torsion ring.

[0014] In one embodiment, an activity frame is provided between the connecting plates of the conveying wheel. A rectangular groove is provided in the middle of the activity frame. The two groups of rotating rods penetrate and are slidably connected to the rectangular groove of the activity frame. A thrust spring is provided between the ends of the rotating rod close to the activity frame.

[0015] In one embodiment, a conveying motor is provided between the activity frame and the connecting plate. The rotating shaft of the conveying motor is drivingly connected to the conveying wheel.

[0016] The beneficial effects of the present utility model are as follows: As an electromagnetic wire surface flaw detection device with relatively low cost, which can complete the four-sided detection with a small number of high-speed cameras, and can effectively avoid the problem of misjudgment of flaws caused by the influence of vertical flat flaws on plane shooting, the specific implementation is as follows:

[0017] First, the operator passes the electromagnetic wire between two groups of conveying wheels in sequence, then starts the conveying motor, and rotates the conveying wheels to convey the electromagnetic wire. Due to the different thicknesses of the electromagnetic wire, the conveying wheels are firmly attached to the outer side of the electromagnetic wire through the extrusion of the thrust spring inside the movable frame, which is convenient for subsequent transportation and use. After that, the electromagnetic wire passes between two groups of high-speed cameras and then continues to pass through the middle of the supplementary lighting component; until it passes through two kinds of twisting mechanisms, start one of the driving motors to drive the twisting gear to rotate the twisting ring, and the conveying wheels clamp the electromagnetic wire to rotate the electromagnetic wire by 90°. After the light-emitting lamp beads irradiate the light to the four sides of the electromagnetic wire, the high-speed cameras start to shoot. Since the shooting angle of the high-speed cameras is inclined, the flaws will diffusely reflect the light source emitted by the light-emitting lamp beads during shooting, so that the flaws can be judged. Even for a relatively flat flaw surface, the light source of the light-emitting lamp beads cannot sufficiently irradiate the periphery of the flaw, so that the flaw detection can be realized.

[0018] Due to the influence of the light source reflection of electromagnetic wires with different thicknesses on the shooting of high-speed cameras, rotate and adjust the threaded rod to change the distance between the first buckling ring and the fixed plate, drive the sliding block to slide up and down in the gap between the first buckling ring and the second buckling ring, so that the high-speed cameras can adjust the shooting position by rotating the connecting hinge, avoiding the direct reflection of the light source from affecting the reflection effect.

[0019] This device has a simple structure, discriminates flaws through the reflection effect of the light source on the flat fish flaw surface, and at the same time can still discriminate even if there are flaws on the vertical plane, avoiding misjudgment caused by the vertical shooting of high-speed cameras. At the same time, the use of the electromagnetic wire twist reduces the use of high-speed cameras to reduce the detection cost, has good practicability and economic properties, and is beneficial to the popularization and use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further describes the present utility model in detail with reference to the drawings and specific implementation methods.

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 is a three-dimensional structural schematic diagram of the shooting mechanism of the present utility model;

[0023] Figure 3 is a partial structural schematic diagram of the shooting mechanism of the present utility model;

[0024] Figure 4It is a three-dimensional structural schematic diagram of the torsion mechanism of the present utility model;

[0025] Figure 5 It is a partial three-dimensional structural schematic diagram of the torsion mechanism of the present utility model.

[0026] Description of the drawings: 1. Base plate; 2. Shooting mechanism; 21. Shooting support frame; 22. High-speed camera; 221. Connecting hinge; 23. Adjusting screw rod; 231. First buckling ring; 232. Second buckling ring; 24. Fixed plate; 25. Sliding block; 3. Electromagnetic wire; 4. Torsion mechanism; 41. Twisting gear; 42. Driving motor; 421. Support block; 43. Torsion ring; 431. Connecting plate; 432. Groove limiting block; 433. Activity groove; 44. Rotating rod; 45. Conveyor wheel; 46. Conveyor motor; 47. Activity frame; 48. Thrust spring; 5. Light supplementing component; 51. Light support frame; 52. Light-emitting lamp beads. Detailed implementation manners

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the detailed description of the embodiments of the present utility model provided in the drawings below is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0029] The following combines Figures 1-5 to illustrate the detailed implementation manners of the present utility model. The electromagnetic wire surface flaw detection device includes

[0030] Referring to Figure 1 as shown, the base plate 1, and the base plate 1 is used to support the equipment structure;

[0031] Referring to Figure 1 、 2 as shown, the electromagnetic wire 3, the middle part of the electromagnetic wire 3 is torsionally arranged, and the torsion angle of the detection area in the middle of the electromagnetic wire 3 is 90°. Specifically, during the transportation of the electromagnetic wire 3, a part of the transportation area is extracted as the detection area, and the electromagnetic wire 3 is twisted in the detection area by rotating one end of the detection area to facilitate subsequent detection;

[0032] Referring toFigure 1 , 4 As shown in Figure 5, torsion mechanisms 4 are provided at both ends of the torsion area of the magnet wire 3. The torsion mechanism 4 includes a torsion ring 43. An annular array of single teeth is provided on the outer peripheral side of the torsion ring 43. Two groups of connecting plates 431 are provided in the middle of the torsion ring 43. The two groups of connecting plates 431 are symmetrically arranged. Two groups of movable slots 433 are provided on the connecting plates 431. The two groups of movable slots 433 are symmetrically arranged. A rotating rod 44 is provided between the opposite movable slots 433 on the two groups of connecting plates 431. A conveying wheel 45 is provided in the middle of the rotating rod 44; An activity frame 47 is provided between the conveying wheels 45 on the connecting plates 431. A rectangular slot is provided in the middle of the activity frame 47. The two rotating rods 44 penetrate and are slidably connected to the rectangular slot of the activity frame 47. A thrust spring 48 is provided between the end of the rotating rod 44 close to the activity frame 47; A conveying motor 46 is provided between the activity frame 47 and the connecting plate 431. The rotating shaft of the conveying motor 46 is drivingly connected to the conveying wheel 45; A number of support blocks 421 are also provided on the bottom plate 1. A driving motor 42 is provided on the support block 421. A twisting gear 41 is provided on the rotating shaft of the driving motor 42. The twisting gear 41 meshes with the single teeth on the outer peripheral side of the torsion ring 43. A number of groove limit blocks 432 are also provided on the bottom plate 1. The recess of the groove limit block 432 is buckled to the outer peripheral side of the torsion ring 43.

[0033] In implementation, after the magnet wire 3 passes through the two torsion mechanisms 4, one of the driving motors 42 is started to drive the twisting gear 41 to rotate the torsion ring 43, and the conveying wheel 45 clamps the magnet wire 3 and rotates the magnet wire 3 by 90°, which is convenient for subsequent operations.

[0034] Beneficially, the material used for the conveying wheel 45 is rubber to prevent the magnet wire 3 from being scratched.

[0035] Refer to Figure 3 As shown in the figure, the photographing mechanism 2. The photographing mechanism 2 includes a photographing support frame 21. The photographing support frame 21 is provided above the bottom plate 1. Two high-speed cameras 22 are provided on the photographing support frame 21. The two high-speed cameras 22 are symmetrically arranged in the middle of the photographing support frame 21. The intersection of the extension lines of the shooting directions of the two high-speed cameras 22 points to the torsion center of the magnet wire 3; A connecting hinge 221 is provided between the periphery of the high-speed camera 22 and the photographing support frame 21. A fixing plate 24 is provided on the side of the photographing support frame 21 away from the bottom plate 1. A sliding block 25 is provided at the end of the high-speed camera 22. The sliding block 25 has a U-shaped structure. The end of the sliding block 25 away from the opening is rotatably connected to the high-speed camera 22. An adjusting screw rod 23 is provided in the middle of the fixing plate 24. The adjusting screw rod 23 is rotatably connected to the fixing plate 24. A first buckling ring 231 and a second buckling ring 232 are provided at one end of the adjusting screw rod 23 close to the sliding block 25. There is a gap between the first buckling ring 231 and the second buckling ring 232. The sliding block 25 passes through the gap between the first buckling ring 231 and the second buckling ring 232 and is penetrated by the adjusting screw rod 23;

[0036] Beneficially, a light supplementing member 5 is provided on one side of the photographing support frame 21 close to the twisting center of the electromagnetic wire 3. The light supplementing member 5 includes a light support frame 51, and a plurality of light-emitting lamp beads 52 are provided on the light support frame 51. The light-emitting lamp beads 52 surround the outer periphery of the electromagnetic wire 3.

[0037] Working principle of the utility model:

[0038] The operator first passes the electromagnetic wire 3 between two groups of conveying wheels 45 in sequence, then starts the conveying motor 46, and rotates the conveying wheels 45 to convey the electromagnetic wire 3. Since the thickness of the electromagnetic wire 3 is different, the conveying wheels 45 are firmly attached to the outer side surface of the electromagnetic wire 3 by the extrusion of the thrust spring 48 inside the movable frame 47, which is convenient for subsequent transportation and use. After that, the electromagnetic wire 3 passes between two groups of high-speed cameras 22 and then continues to pass through the middle of the light supplementing member 5; until after passing through the two twisting mechanisms 4, start one of the driving motors 42 to drive the twisting gear 41 to rotate the twisting ring 43. The conveying wheels 45 clamp the electromagnetic wire 3 and rotate the electromagnetic wire 3 by 90°. After the light-emitting lamp beads 52 irradiate light to the periphery of the electromagnetic wire 3, the high-speed cameras 22 start to photograph. Since the photographing angles of the high-speed cameras 22 are inclined, the defects will diffusely reflect the light source emitted by the light-emitting lamp beads 52 during photographing, and thus the defect discrimination can be carried out. Even for a relatively flat defect surface, the light source of the light-emitting lamp beads 52 cannot sufficiently irradiate the periphery of the defect, and thus the defect detection can be realized.

[0039] Due to the influence of the light source reflection of the electromagnetic wire 3 with different thicknesses on the photographing of the high-speed cameras 22, rotate and adjust the threaded rod 23 to change the distance between the first buckling ring 231 and the fixing plate 24, and drive the sliding block 25 to slide up and down in the gap between the first buckling ring 231 and the second buckling ring 232, so that the high-speed cameras 22 rotate through the connecting hinge 221 to adjust the photographing position and avoid the direct reflection of the light source from affecting the reflection effect.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 situations.

[0041] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of the present technology make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of the present utility model, they should all belong to the protection scope of the present utility model.

Claims

1. Electromagnetic wire (3) surface flaw detection device, characterized in that: including a bottom plate (1) for supporting the equipment structure; an electromagnetic wire (3) with its middle part twisted, and the twisting angle of the detection area in the middle of the electromagnetic wire (3) is 90°; a photographing mechanism (2) including a photographing support frame (21) arranged above the bottom plate (1). Two high-speed cameras (22) are provided on the photographing support frame (21), and the two high-speed cameras (22) are symmetrically arranged in the middle of the photographing support frame (21). The intersection of the extension lines of the photographing directions of the two high-speed cameras (22) points to the twisting center of the electromagnetic wire (3).

2. The surface flaw detection device for the electromagnetic wire (3) according to claim 1, characterized in that: A connecting hinge (221) is provided between the periphery of the high-speed camera (22) and the photographing support frame (21). A fixing plate (24) is provided on one side of the photographing support frame (21) away from the bottom plate (1). A sliding block (25) is provided at the end of the high-speed camera (22). The sliding block (25) has a U-shaped structure. The end of the sliding block (25) away from the opening is rotatably connected to the high-speed camera (22). An adjusting threaded rod (23) is provided in the middle of the fixing plate (24). The adjusting threaded rod (23) is rotatably connected to the fixing plate (24). A first buckling ring (231) and a second buckling ring (232) are provided at one end of the adjusting threaded rod (23) close to the sliding block (25). There is a gap between the first buckling ring (231) and the second buckling ring (232). The sliding block (25) passes through the gap between the first buckling ring (231) and the second buckling ring (232) and is penetrated by the adjusting threaded rod (23).

3. The surface defect detection device for the magnet wire (3) according to claim 2, characterized in that: A light supplementing member (5) is provided on one side of the photographing support frame (21) close to the twisting center of the electromagnetic wire (3). The light supplementing member (5) includes a light support frame (51). A plurality of light-emitting beads (52) are provided on the light support frame (51), and the light-emitting beads (52) surround the outer periphery of the electromagnetic wire (3).

4. The surface defect detection device for the electromagnetic wire (3) according to claim 1, characterized in that: Twisting mechanisms (4) are provided at both ends of the twisting area of the electromagnetic wire (3). The twisting mechanism (4) includes a twisting ring (43). A ring of single teeth is provided on the outer periphery of the twisting ring (43). Two connecting plates (431) are provided in the middle of the twisting ring (43). The two connecting plates (431) are symmetrically arranged. Two moving grooves (433) are provided on the connecting plates (431). The two moving grooves (433) are symmetrically arranged. A rotating rod (44) is provided between the opposite moving grooves (433) on the two connecting plates (431). A conveying wheel (45) is provided in the middle of the rotating rod (44).

5. The surface flaw detection device for the magnet wire (3) according to claim 4, characterized in that: The conveying wheel (45) is made of rubber to prevent the electromagnetic wire (3) from being scratched.

6. The surface flaw detection device for the magnet wire (3) according to claim 4, characterized in that: On the bottom plate (1), there are also several support blocks (421). A driving motor (42) is provided on the support block (421). A twisting gear (41) is provided on the rotating shaft of the driving motor (42). The twisting gear (41) meshes with the single tooth on the outer periphery of the torsion ring (43). On the bottom plate (1), there are also several groove limit blocks (432). The recess of the groove limit block (432) is buckled to the outer periphery of the torsion ring (43).

7. The surface flaw detection device for the electromagnetic wire (3) according to claim 4, characterized in that: An activity frame (47) is provided between the conveying wheel (45) and the connecting plate (431). A rectangular groove is provided in the middle of the activity frame (47). Two groups of the rotating rods (44) penetrate and are slidably connected to the rectangular groove of the activity frame (47). A thrust spring (48) is provided between the rotating rod (44) and the end of the activity frame (47) close to it.

8. The surface flaw detection device for the magnet wire (3) according to claim 7, wherein: A conveying motor (46) is provided between the activity frame (47) and the connecting plate (431). The rotating shaft of the conveying motor (46) is drivingly connected to the conveying wheel (45).

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