An online detection device and method for enameled wire paint film damage

Abstract

The invention relates to an online detection device and method for detecting damage to the paint film of an enameled wire, belonging to the technical field of detecting damage to the paint film of an enameled wire. The online detection device for detecting damage to the paint film of an enameled wire comprises a frame, a guide wheel group and a detection sliding assembly. The detection sliding assembly comprises a power supply, a power switch, an alarm, a threading block and a conductive brush. Two conductive brushes are arranged on the inner side of the threading block. The enameled wire wound on the guide wheel group close to the side of the frame passes through the threading block and contacts the two conductive brushes. The two conductive brushes form a detection circuit with the enameled wire, the power supply, the power switch and the alarm. The beneficial effect of the present invention is that the overall structure of the online detection device is simple, the detection position can be controlled independently, the adjustment of the detection position is flexible and convenient, the detection result is reliable, the paint film of the enameled wire is monitored in real time during the production process of the enameled wire to see if it is damaged, and problems in the entire production process of the enameled wire are discovered in time, and response measures are taken in time, thereby reducing economic losses for the enameled wire production enterprise.

Description

Technical Field

[0001] The present invention relates to the technical field of enameled wire paint film damage detection, and in particular to an enameled wire paint film damage online detection device and detection method. Background Art

[0002] Enameled wire is a common product used in daily life and production. It primarily consists of a conductor and an insulation layer. After annealing and softening, the bare wire undergoes multiple coats of paint and baking. However, producing products that meet both standard requirements and customer specifications is challenging, impacted by factors such as raw material quality, process parameters, production equipment, and the environment. Scratches and damage to the paint film on the enameled wire surface render the wire scrapped, impacting the profitability of the manufacturer. These scratches occur due to contact with adjacent machinery during the painting process. Furthermore, impurities in the grooves of guide pulleys used in wire production can also cause scratches. Barbs on the drawing die can also scratch the wire film. The problem of paint film scratches on the surface of enameled wire is often caused by separate inspection of the enameled wire after production. Although this can prevent defective products from entering the market, it is difficult to find which link in the enameled wire production process has problems, and traceability is difficult. It is impossible to solve the production quality problems of enameled wire manufacturers, thus creating a vicious cycle, increasing the scrap rate of enameled wire production, and causing considerable economic losses to the manufacturers. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides an online detection device and detection method for enameled wire paint film damage, which can monitor whether the enameled wire paint film is damaged in real time during the enameled wire production process, and can promptly discover problems in the entire production process of the enameled wire and take timely response measures, thereby improving the production quality of the enameled wire, reducing the scrap rate, and reducing economic losses for enameled wire production enterprises.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve its technical problem is: the online detection device for paint film damage of the enameled wire includes a frame and a guide wheel group and a detection sliding assembly arranged thereon, the detection sliding assembly is provided with multiple groups and is slidably connected to the frame, the detection sliding assembly includes a power supply, a power switch, an alarm, a threading block and a conductive brush, two conductive brushes are provided on the inside of the threading block, the guide wheel group includes multiple groups of relative wire-winding guide wheels I and wire-winding guide wheels II arranged at the upper and lower ends of the frame, the enameled wire wound on the wire-winding guide wheels I and II close to the side of the frame passes through the threading block and contacts the two conductive brushes, and the two conductive brushes form a detection circuit with the enameled wire, power supply, power switch and alarm.

[0005] Furthermore, the threading block includes a U-shaped block and a guide positioning block, the conductive brushes are fixed on both sides of the bottom of the U-shaped block, and one guide positioning block is fixed on both sides of the bottom end of the U-shaped block, and two conductive brushes are accommodated between the two guide positioning blocks and arranged in a V shape.

[0006] Furthermore, the guide positioning block is configured as an insulating block, the upper part of the guide positioning block close to the conductive brush side is configured as an inclined surface, the angle between the inclined surface and the center line of the U-shaped block is an acute angle, the lower part of the guide positioning block close to the conductive brush side is configured as a vertical surface, and the two vertical surfaces of the two guide positioning blocks are separated by a distance.

[0007] Furthermore, the conductive brush is configured as a spread-out conductive copper braid.

[0008] Furthermore, the rear of the threading block is connected to a power supply box, the power supply is arranged in the power supply box, and a power switch electrically connected to the power supply is arranged on the outside of the power supply box.

[0009] Furthermore, the detection sliding assembly also includes a sliding plate and a sliding block. The sliding plate is fixed to the rear of the power supply box. One end of the sliding plate is fixed with a sliding block through a bolt connector. The frame is provided with a sliding groove that slides with the sliding block.

[0010] Furthermore, both ends of the sliding groove are opened, and the cross-section of the sliding groove is set to be T-shaped, the sliding block is set to be a T-shaped block that cooperates with the sliding groove, the length of the sliding block is smaller than the depth of the sliding groove, and one end of the bolt connector extends into the sliding groove and interferes with the sliding groove.

[0011] Furthermore, the frame is provided with an outwardly protruding test platform, and the detection sliding assembly is provided above the test platform.

[0012] Furthermore, a strip groove is provided at the upper end of the frame, the wire take-up guide wheel I is installed in the strip groove through a bracket, and the wire take-up guide wheel II is fixed at the lower end of the frame.

[0013] A method for online detection of enameled wire paint film damage, using the device for online detection of enameled wire paint film damage, comprises the following steps:

[0014] 1) Slide the detection sliding assembly to adjust the position of the detection sliding assembly on the frame so that the center lines of the two conductive brushes of the detection sliding assembly are collinear with the vertical tangents of the wheel grooves of the take-up guide wheel I and the take-up guide wheel II close to the frame side;

[0015] 2) The bare metal wire is extruded and cooled to form an enameled wire. During the winding process, the power switch of the detection sliding assembly at the corresponding winding position is turned on, so that the enameled wire passes through the winding guide wheel I and the winding guide wheel II, enters the threading block, and then passes between the two conductive brushes;

[0016] 3) During the winding process of the enameled wire, when the position where the paint film is damaged passes through the conductive brush, the detection circuit formed by the conductive brush, power supply and alarm is turned on and a breakdown current is generated instantaneously, and an alarm is issued to indicate that the paint film of the enameled wire at the corresponding winding position is damaged.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the process of winding the enameled wire of the present invention, the enameled wire passes through the two conductive brushes at the bottom of the detection sliding assembly through the guide wheel group, and the power switch of the corresponding winding position is turned on as needed. When the position where the paint film on the enameled wire is damaged passes through the conductive brush, the detection circuit formed by the conductive brush, the power supply and the alarm is turned on and a breakdown current is generated instantaneously, and an alarm is displayed to show that the paint film of the enameled wire at the corresponding winding position is damaged. The enameled wire production equipment and production process before the position where the paint film of the enameled wire is damaged are checked, and problems in the entire production process of the enameled wire are discovered in time, and corresponding measures are taken in time to reduce the probability of the paint film of the enameled wire being damaged again, thereby improving the production quality of the enameled wire, reducing the scrap rate, and reducing economic losses for the enameled wire production enterprise.

[0019] 2. Specifically, the threading block includes a U-shaped block and a guide positioning block. The two sides of the bottom of the U-shaped block are used to fix the conductive brushes. The guide positioning block is fixed to the lower end of the U-shaped block and an inclined surface is provided on the inner side of the guide positioning block, so that the two conductive brushes are arranged in a V shape between the two guide positioning blocks. After the enameled wire passes through the two conductive brushes, the damaged part contacts the bottom of the two conductive brushes, and the detection circuit is turned on, thereby preventing the problem of the two conductive brushes being in close contact and affecting the detection results, thereby improving the reliability of the detection results.

[0020] 3. Specifically, the detection sliding assembly slides in the sliding groove of the frame through the T-shaped sliding block at the rear, which can be used to adjust the position of the detection sliding assembly. The detection sliding assembly can be positioned by interfering with the sliding groove through one end of the bolt connector extending into the sliding groove, so that the center line of the two conductive brushes is collinear with the vertical tangent of the wheel groove of the guide wheel group close to the side of the frame, so that the enameled wire passes through the center line of the two conductive brushes, making the adjustment and positioning of the detection sliding assembly flexible and convenient, further improving the reliability of the detection results; and a strip groove is provided at the upper end of the frame, in which the wire take-up guide wheel I is installed through a bracket, and the wire take-up guide wheel II is fixed at the lower end of the frame. By adjusting the wire take-up guide wheel I to be opposite to the wire take-up guide wheel II, it is ensured that the enameled wire passes vertically between the two conductive brushes, thereby ensuring the comprehensiveness of the detection.

[0021] In summary, the overall structure of the online detection device is simple, the detection position can be controlled individually according to needs, the adjustment of the detection position is flexible and convenient, the detection results are reliable, and the enameled wire paint film is monitored in real time during the enameled wire production process to see if there is any damage. Problems in the entire production process of the enameled wire can be discovered in time, and response measures can be taken in time, thereby improving the production quality of the enameled wire, reducing the scrap rate, and reducing economic losses for enameled wire production enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0023] Figure 1 This is a front view of the online detection device of the present invention;

[0024] Figure 2 for Figure 1 A side view of the detection slide assembly;

[0025] The marks in the above figures are: 1. Frame, 11. Sliding groove, 12. Test platform, 13. Strip groove, 2. Guide wheel group, 21. Take-up guide wheel I, 22. Take-up guide wheel II, 3. Detection sliding assembly, 31. Power supply, 32. Power switch, 33. Alarm, 34. Threading block, 341. U-shaped block, 342. Guide positioning block, 35. Conductive brush, 36. Sliding plate, 37. Sliding block, 4. Power supply box, 5. Bolt connection. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] The specific embodiment of the present invention is: Figure 1 and Figure 2As shown, an online detection device for paint film damage of an enameled wire includes a frame 1 and a guide wheel group 2 and a detection sliding assembly 3 arranged thereon. The detection sliding assembly 3 is provided with multiple groups and is slidably connected to the frame 1. The detection sliding assembly 3 includes a power supply 31, a power switch 32, an alarm 33, a threading block 34 and a conductive brush 35. Two conductive brushes 35 are provided inside the threading block 34. The guide wheel group 2 includes multiple groups of opposite wire-rewinding guide wheels I 21 and wire-rewinding guide wheels II 22 arranged at the upper and lower ends of the frame 1. The enameled wire wound on the wire-rewinding guide wheels I 21 and II 22 near the side of the frame 1 passes through the threading block 34 and contacts the two conductive brushes 35, so that the enameled wire can pass through the two conductive brushes 35 during the wire-rewinding process, making the detection more comprehensive. The two conductive brushes 35 A detection circuit is formed with the enameled wire, power supply 31, power switch 32 and alarm 33. The power switch 32 of the corresponding winding position is turned on as needed. When the position where the paint film on the enameled wire is damaged passes through the two conductive brushes 35, the detection circuit formed by the conductive brush 35, power supply 31 and alarm 33 is turned on and a breakdown current is generated instantaneously, and an alarm is triggered to show that the paint film of the enameled wire at the corresponding winding position is damaged. The enameled wire production equipment and production process before the position where the paint film of the enameled wire is damaged are checked, and problems in the entire production process of the enameled wire are discovered in time, and response measures are taken in time to reduce the chance of the paint film of the enameled wire being damaged again, thereby improving the production quality of the enameled wire, reducing the scrap rate, and reducing economic losses for the enameled wire production enterprise.

[0029] Specifically, the threading block 34 includes a U-shaped block 341 and a guide positioning block 342. Conductive brushes 35 are fixed on both sides of the bottom of the U-shaped block 341, and a guide positioning block 342 is fixed on both sides of the bottom end of the U-shaped block 341. Two conductive brushes 35 are accommodated between the two guide positioning blocks 342 and the two conductive brushes 35 are arranged in a V shape so that the two conductive brushes 35 are not in close contact. Since the conductive brushes 35 are configured as scattered conductive copper braids, even if the copper braids on the two conductive brushes 35 are in contact, the current generated by the contact is also very small due to the small diameter of the scattered conductive copper braids, which is insufficient to make the entire detection circuit conductive. The guide positioning block 342 is configured as an insulating block to prevent interference with the detection circuit. The upper portion of the guide positioning block 342 close to the conductive brush 35 is configured as an inclined surface, and the angle between the inclined surface and the center line of the U-shaped block 341 is an acute angle. The lower portion of the guide positioning block 342 close to the conductive brush 35 is configured as a vertical surface, and the two vertical surfaces of the two guide positioning blocks 342 are separated by a distance, so that the conductive brush 35 forms a V shape after being attached to the inner side of the two guide positioning blocks 342.

[0030] Specifically, the rear of the threading block 34 is connected to the power supply box 4, a power supply 31 is set in the power supply box 4, and a power switch 32 electrically connected to the power supply 31 is set on the outside of the power supply box 4. The power switch 32 of the corresponding winding position can be conveniently opened or closed as needed. The power supply box 4 plays a role in protecting the power supply 31. The power supply 31 can be set to a DC power supply, and a hinged door can be set on one side of the power supply box 4 to facilitate the replacement of the power supply 31.

[0031] Specifically, a sliding plate 36 is fixed to the rear of the power supply box 4, and a sliding block 37 is fixed to one end of the sliding plate 36 through a bolt connector 5. A sliding groove 11 that slides with the sliding block 37 is provided on the frame 1. Openings are provided at both ends of the sliding groove 11 to facilitate the installation and disassembly of the sliding plate 36, and the cross-section of the sliding groove 11 is set to a T-shape. The sliding block 37 is set to a T-shaped block that cooperates with the sliding groove 11, which prevents the detection sliding assembly 3 from detaching from the frame 1, making the sliding of the detection sliding assembly 3 more stable. The length of the sliding block 37 is less than the depth of the sliding groove 11, and the bolt connector 5 extends into one end of the sliding groove 11 and contacts and cooperates with the sliding groove 11 to complete the positioning of the detection sliding assembly 3. The detection sliding assembly 3 slides in the sliding groove 11 of the frame 1 through the T-shaped sliding block 37 at the rear, which can be used to adjust the position of the detection sliding assembly 3. The detection sliding assembly 3 can be positioned by screwing the bolt connector 5 so that one end of the bolt connector 5 extends into the sliding groove 11 and interferes with the inside of the sliding groove 11. The center line of the two conductive brushes 35 is collinear with the vertical tangent of the wheel groove of the guide wheel group 2 on the side close to the frame 1, and the enameled wire passes through the center line of the two conductive brushes 35. This makes the adjustment and positioning of the detection sliding assembly 3 flexible and convenient, further improving the reliability of the detection results.

[0032] In addition, the frame 1 is provided with an outwardly protruding test platform 12, and a detection slide assembly 3 is provided above the test platform 12. The test platform 12 can prevent external equipment from colliding with the detection slide assembly 3 during movement, thereby protecting the detection slide assembly 3. The test platform 12 can also be used to place tools, making it easier for workers to perform maintenance operations. A strip groove 13 is provided at the upper end of the frame 1, and a wire take-up guide wheel I 21 is mounted in the strip groove 13 via a bracket. A wire take-up guide wheel II 22 is fixed to the lower end of the frame 1. By adjusting the position of the wire take-up guide wheel I 21 in the strip groove 13 so that it is opposite to the wire take-up guide wheel II 22, the enameled wire is ensured to pass vertically between the two conductive brushes 35, thereby ensuring comprehensive testing.

[0033] The method for online detection of enameled wire paint film damage using the above-mentioned detection device includes the following steps:

[0034] 1) Loosen the bolt connector 5 so that its end is separated from the inner wall of the sliding groove 11, slide the sliding plate 36 to make the sliding block 37 slide in the sliding groove 11, so that the center lines of the two conductive brushes 35 of the detection sliding assembly 3 are collinear with the vertical tangent of the wheel groove of the take-up guide wheel I 21 and the take-up guide wheel II 22 on the side close to the frame 1, and screw the bolt connector 5 so that the end of the bolt connector 5 extending into the sliding groove 11 contacts the sliding groove 11;

[0035] 2) The bare metal wire is extrusion-coated and cooled to form an enameled wire. During the winding process, the power switch 32 of the detection sliding assembly 3 at the corresponding winding position is turned on, so that the enameled wire passes through the winding guide wheel I 21 and the winding guide wheel II 22, enters the threading block 34, and then passes between the two conductive brushes 35;

[0036] 3) During the winding process of the enameled wire, when the position where the paint film is damaged passes through the conductive brush 35, the detection circuit formed by the conductive brush 35, the power supply 31 and the alarm 33 is turned on and a breakdown current is generated instantaneously, and an alarm is displayed to indicate that the paint film of the enameled wire at the corresponding winding position is damaged.

[0037] In addition, an RS485 interface is set on the alarm 33 in the device. The RS485 interface is connected to the network switch through an RS485-TCP network converter. The network switch is connected to the network port of the computer. By setting a monitoring operation page on the computer, the status of multiple alarms 33 can be monitored and data can be stored, so that during online detection, there is no need for workers to observe on site, and real-time monitoring can be performed through the computer.

[0038] In summary, the overall structure of the online detection device is simple, the detection position can be controlled individually according to needs, the adjustment of the detection position is flexible and convenient, the detection results are reliable, and the enameled wire paint film is monitored in real time during the enameled wire production process to see if there is any damage. Problems in the entire production process of the enameled wire can be discovered in time, and response measures can be taken in time, thereby improving the production quality of the enameled wire, reducing the scrap rate, and reducing economic losses for enameled wire production enterprises.

[0039] The above description is merely an illustration of some principles of the present invention. This specification is not intended to limit the present invention to the specific structure and application scope shown and described. Therefore, all corresponding modifications and equivalents that may be used are within the scope of the patent applied for by the present invention.

Claims

1. An online detection device for enameled wire paint film damage, characterized in that: The invention comprises a frame (1) and a guide wheel group (2) and a detection sliding assembly (3) arranged thereon, wherein the detection sliding assembly (3) is provided with multiple groups and is slidably connected to the frame (1), the detection sliding assembly (3) comprises a power supply (31), a power switch (32), an alarm (33), a threading block (34) and a conductive brush (35), two conductive brushes (35) are arranged inside the threading block (34), the guide wheel group (2) comprises multiple groups of opposite wire-receiving guide wheels I (21) and wire-receiving guide wheels II (22) arranged at the upper and lower ends of the frame (1), the enameled wire wound on the wire-receiving guide wheels I (21) and the wire-receiving guide wheels II (22) close to the frame (1) passes through the threading block (34) and contacts the two conductive brushes (35), and the two conductive brushes (35) form a detection circuit with the enameled wire, the power supply (31), the power switch (32) and the alarm (33); The threading block (34) comprises a U-shaped block (341) and a guide positioning block (342), the conductive brushes (35) are fixed on both sides of the bottom of the U-shaped block (341), and one guide positioning block (342) is fixed on both sides of the bottom end of the U-shaped block (341), and two conductive brushes (35) are accommodated between the two guide positioning blocks (342) so that the two conductive brushes (35) are arranged in a V shape; The guide positioning block (342) is configured as an insulating block, the upper portion of the guide positioning block (342) close to the conductive brush (35) is configured as an inclined surface, the angle between the inclined surface and the center line of the U-shaped block (341) is an acute angle, the lower portion of the guide positioning block (342) close to the conductive brush (35) is configured as a vertical surface, and the two vertical surfaces of the two guide positioning blocks (342) are spaced apart by a distance; The conductive brushes (35) are configured as dispersed conductive copper braids.

2. The online detection device for enameled wire paint film damage according to claim 1, characterized in that: The rear of the threading block (34) is connected to the power supply box (4), the power supply (31) is arranged in the power supply box (4), and a power switch (32) electrically connected to the power supply (31) is arranged outside the power supply box (4).

3. The online detection device for enameled wire paint film damage according to claim 2, characterized in that: The detection sliding assembly (3) also includes a sliding plate (36) and a sliding block (37), wherein the sliding plate (36) is fixed at the rear of the power supply box (4), one end of the sliding plate (36) is fixed with the sliding block (37) via a bolt connector (5), and a sliding groove (11) is provided on the frame (1) for sliding engagement with the sliding block (37).

4. The online detection device for enameled wire paint film damage according to claim 3, characterized in that: The two ends of the sliding groove (11) are open, and the cross section of the sliding groove (11) is set to be T-shaped. The sliding block (37) is set to be a T-shaped block that matches the sliding groove (11). The length of the sliding block (37) is less than the depth of the sliding groove (11). One end of the bolt connector (5) extends into the sliding groove (11) and contacts the sliding groove (11).

5. The online detection device for enameled wire paint film damage according to claim 3, characterized in that: The frame (1) is further provided with a test platform (12) protruding outward, and the detection sliding assembly (3) is arranged above the test platform (12).

6. The online detection device for enameled wire paint film damage according to claim 5, characterized in that: The upper end of the frame (1) is provided with a strip groove (13), a wire take-up guide wheel I (21) is installed in the strip groove (13) via a bracket, and the lower end of the frame (1) is fixed with the wire take-up guide wheel II (22).

7. A method for online detection of paint film damage on an enameled wire, using the device for online detection of paint film damage on an enameled wire according to any one of claims 1 to 6, characterized in that: The following steps are involved: 1) Sliding the detection sliding assembly (3) and adjusting the position of the detection sliding assembly (3) on the frame (1) so that the center lines of the two conductive brushes (35) of the detection sliding assembly (3) are collinear with the vertical tangent lines of the wheel grooves of the take-up guide wheel I (21) and the take-up guide wheel II (22) close to the side of the frame (1); 2) The bare metal wire is extruded and coated and cooled to form an enameled wire. During the process of winding the enameled wire, the power switch (32) of the detection sliding assembly (3) at the corresponding winding position is turned on, so that the enameled wire passes through the winding guide wheel I (21) and the winding guide wheel II (22) and enters the threading block (34) and then passes between two conductive brushes (35); 3) During the process of winding the enameled wire, when the position where the paint film on the enameled wire is damaged passes through the conductive brush (35), the detection circuit formed by the conductive brush (35), the power supply (31) and the alarm (33) is turned on and a breakdown current is instantly generated, and an alarm is issued to indicate that the paint film of the enameled wire at the corresponding winding position is damaged.

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