CN118348363A - Workpiece insulating coating detection device - Google Patents

Abstract

The invention discloses a workpiece insulating coating detection device, comprising a base plate, on which a workpiece positioning mechanism, an electric spark detection mechanism and a coating thickness detection frame are arranged, a first electric cylinder is installed at the rear end of the coating thickness detection frame, one end of the first electric cylinder is connected to a cross plate, a plurality of detection probes are arranged at the lower end of the cross plate, the electric spark detection mechanism comprises a power component, a probe brush and a marking component, and the workpiece positioning mechanism comprises a first positioning frame and a second positioning frame; the technical key points are as follows: the coating thickness detection frame comprises a plurality of elastically retractable detection probes, and multi-point detection of the workpiece coating thickness is achieved through the plurality of detection probes; the position of the probe brush is adjustable, and the motor can drive the workpiece to rotate, so that scanning and detection of special-shaped workpieces is convenient, detection blind spots are eliminated, and detection quality is improved, defect detection and thickness detection of insulating coatings are integrated, and there is no need to transfer the workpiece during the detection process, thereby improving detection efficiency.

Description

A device for detecting insulating coating of workpiece

Technical Field

The invention relates to the technical field of insulating coating detection, and in particular to a workpiece insulating coating detection device.

Background technique

Insulation coating refers to the surface coating that can electrically insulate the workpiece at high temperature. Insulation coating is widely used in electricity, electronics, electrical appliances, atomic energy, space technology, etc. The quality of insulation coating is crucial to the protection effect of the workpiece. Before the workpiece is put into use, the quality of the insulation coating of the workpiece needs to be tested using a coating detection device.

The existing method of detecting insulating coatings is to scan along the workpiece with an electric spark detector to determine the location of the defect. The above detection method requires scanning along the entire outer surface of the workpiece, which is inconvenient for detecting special-shaped workpieces and has a detection blind spot.

The existing detection device performs defect detection and thickness detection of the insulating coating separately, and the workpiece needs to be constantly transferred and fixed during the detection process, which reduces the detection efficiency.

Summary of the invention

In view of the shortcomings of the prior art, the present invention provides a workpiece insulating coating detection device, wherein the coating thickness detection frame includes multiple groups of elastically retractable detection probes, through which multi-point detection of the workpiece coating thickness can be achieved, the position of the probe brush is adjustable, and the motor can drive the workpiece to rotate, which facilitates scanning and detection of special-shaped workpieces, eliminates detection blind spots, improves detection quality, integrates insulating coating defect detection and thickness detection, and does not require transfer of the workpiece during the detection process, thereby improving detection efficiency and solving the technical problems mentioned in the background technology.

To achieve the above object, the present invention is implemented through the following technical solutions:

A workpiece insulating coating detection device comprises a substrate, on which a workpiece positioning mechanism, an electric spark detection mechanism and a coating thickness detection frame are arranged, the workpiece positioning mechanism is used to clamp and fix the workpiece to be detected, the electric spark detection mechanism is used to perform defect detection on the workpiece coating, the coating thickness detection frame is used to detect the coating thickness, a first electric cylinder is installed at the rear end of the coating thickness detection frame, one end of the first electric cylinder is connected to a cross plate, and a plurality of detection probes are arranged at the lower end of the cross plate, the electric spark detection mechanism comprises a power assembly, a probe brush and a marking assembly, and defects are marked by the marking assembly, the workpiece positioning mechanism comprises a first positioning frame and a second positioning frame, and the workpiece is fixed by the clamping force between the first positioning frame and the second positioning frame.

In a possible implementation, a first cylinder is disposed on the inner side surface of the first positioning frame, a second cylinder is disposed on the inner side surface of the second positioning frame, one end of the first cylinder and the second cylinder are both connected to a clamping plate, an electric motor is disposed on the outer side surface of the first positioning frame, and the output shaft of the electric motor is fixed to the first cylinder, the second positioning frame and the second cylinder are connected via a bearing seat, and the second cylinder can rotate relative to the second positioning frame.

In a possible implementation, a second electric cylinder is provided at the top of the horizontal plate, one end of the second electric cylinder is connected to a connecting frame, and multiple groups of detection probes are evenly distributed at the lower end of the connecting frame. The second electric cylinder works to drive the connecting frame, and the connecting frame drives the multiple groups of detection probes to move axially.

In a possible implementation, a first holder is provided on multiple groups of the detection probes, and a plurality of second holders are provided on the connecting frame, and the second holders correspond to the first holders one by one, and a sleeve, a sliding rod and a spring are provided between the second holders and the first holders, and one end of the sliding rod is slidably embedded in the interior of the sleeve, and the spring is located on the periphery of the sleeve and the sliding rod, and the sliding rod is slidably connected to the sleeve to play a guiding role.

In one possible implementation, a push plate is welded and fixed to the lower end of the horizontal plate, one end of the first electric cylinder is fixed to the push plate, a first machine base is provided at the top of the horizontal plate, the first machine base is electrically connected to the detection probe through a first cable, and the circuit is connected through the first cable.

In one possible implementation, the power assembly includes a first linear motor module and a second linear motor module, the second linear motor module is provided with a third electric cylinder, one end of the third electric cylinder is connected to a posture adjustment frame, the position of the probe brush in the X-axis direction is adjusted by the first linear motor module, the position of the probe brush in the Z-axis direction is adjusted by the second linear motor module, and the position of the probe brush in the Y-axis direction is adjusted by the third electric cylinder.

In a possible implementation, a first stepper motor is provided on the posture adjustment frame, one end of the first stepper motor is connected to the first driving frame, a second stepper motor is provided on the first driving frame, one end of the second stepper motor is connected to the second driving frame, and the probe brush is fixedly arranged on the second driving frame. The angle of the probe brush is adjusted by controlling the number of rotations and the rotation direction of the first stepper motor and the second stepper motor.

In a possible implementation, a second base is disposed on one side of the second linear motor module, and the second base is electrically connected to the probe brush via a second cable, and the circuit is connected via the second cable.

In a possible implementation, the marking assembly is fixedly mounted on a second driving frame, the marking assembly includes a vertical plate, an ink cartridge is disposed on one side surface of the vertical plate, a fourth electric cylinder is disposed on the other side surface of the vertical plate, one end of the fourth electric cylinder is connected to an ink storage block, one end of the ink storage block is disposed with a marking head, the ink cartridge and the ink storage block are connected by an ink supply hose, marking ink is stored in the ink cartridge, the ink supply hose connects the ink cartridge and the ink storage block, and the ink storage block is pre-stored with marking ink.

In a possible implementation, a viewing window is provided on the side of the ink cartridge, and an ink filling port is provided on the top of the ink cartridge. The liquid level of the ink inside the ink cartridge is observed through the viewing window. When the liquid level is insufficient, ink is filled through the ink filling port.

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

1. The coating thickness detection frame of the present invention comprises a plurality of groups of elastically retractable detection probes, which can move axially under the drive of the second electric cylinder, and can slide horizontally under the drive of the first electric cylinder. The coating thickness detection frame of the workpiece can be detected at multiple points through the plurality of groups of detection probes, and is suitable for special-shaped workpieces.

2. The power assembly of the present invention realizes multi-position adjustment of the probe brush, the posture adjustment frame adjusts the posture of the probe brush, and the motor of the workpiece positioning mechanism can drive the workpiece to rotate, which facilitates the scanning and detection of special-shaped workpieces, eliminates detection blind spots, and improves detection quality.

3. The present invention integrates defect detection and thickness detection of insulating coatings. There is no need to transfer the workpiece during the detection process, thereby improving detection efficiency.

4. The present invention marks the defective parts by means of a marking component, which is convenient for subsequent processing and does not require manual marking, thus saving time and effort.

BRIEF DESCRIPTION OF THE DRAWINGS

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

FIG1 is a front perspective view of the present invention;

FIG2 is a rear perspective view of the present invention;

FIG3 is a schematic diagram of the top view of the structure of the horizontal plate of the present invention;

FIG4 is a schematic diagram of the bottom view of the horizontal plate of the present invention;

FIG5 is a schematic diagram of the assembly of the detection probe, the first holder and the second holder of the present invention;

FIG6 is a schematic structural diagram of a first positioning frame of the present invention;

FIG7 is a schematic structural diagram of a second positioning frame of the present invention;

FIG8 is a schematic diagram of the structure of a power assembly of the present invention;

FIG9 is a schematic structural diagram of a posture adjustment frame of the present invention;

FIG. 10 is a schematic diagram of the structure of the marking assembly of the present invention.

In the figure: 1, substrate; 2, workpiece positioning mechanism; 3, electric spark detection mechanism; 4, coating thickness detection frame; 5, horizontal plate; 6, detection probe; 7, first electric cylinder; 8, power assembly; 9, detection brush; 10, marking assembly; 11, first positioning frame; 12, second positioning frame; 13, first cylinder; 14, second cylinder; 15, clamping plate; 16, motor; 17, bearing seat; 18, second electric cylinder; 19, connecting frame; 20, first clamping seat; 21, second clamping seat; 22, sleeve; 23, slide rod; 24 , spring; 25, push plate; 26, first base; 27, first cable; 28, first linear motor module; 29, second linear motor module; 30, third electric cylinder; 31, posture adjustment frame; 32, first stepper motor; 33, first drive frame; 34, second stepper motor; 35, second drive frame; 36, second base; 37, second cable; 38, vertical plate; 39, ink cartridge; 40, fourth electric cylinder; 41, ink storage block; 42, marking head; 43, ink supply hose; 44, ink filling port; 45, window.

Detailed ways

The embodiment of the present application provides a workpiece insulating coating detection device, wherein the coating thickness detection frame includes multiple groups of elastically retractable detection probes, and multi-point detection of the workpiece coating thickness is achieved through the multiple groups of detection probes. The position of the probe brush is adjustable, and the motor can drive the workpiece to rotate, which facilitates scanning and detection of special-shaped workpieces, eliminates detection blind spots, improves detection quality, integrates insulating coating defect detection and thickness detection, and does not require transfer of the workpiece during the detection process, thereby improving detection efficiency and solving the technical problems mentioned in the background technology.

The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

Embodiment 1:

Please refer to Figures 1-10. The present invention provides a technical solution: a workpiece insulating coating detection device, including a substrate 1, on which a workpiece positioning mechanism 2, an electric spark detection mechanism 3 and a coating thickness detection frame 4 are arranged. The workpiece positioning mechanism 2 is used to clamp and fix the workpiece to be detected. The electric spark detection mechanism 3 detects whether the insulating coating of the workpiece has holes caused by uneven coating based on the characteristics of the electric spark phenomenon. A first electric cylinder 7 is installed at the rear end of the coating thickness detection frame 4. One end of the first electric cylinder 7 is connected to a horizontal plate 5. A plurality of detection probes 6 are arranged at the lower end of the horizontal plate 5. The detection probes of the coating thickness detection frame 4 6 utilizes the electromagnetic field generated in the coil by high-frequency alternating current. When the detection probe 6 contacts the insulating coating of the workpiece, eddy currents are generated on the metal substrate and feedback is generated on the coil in the detection probe 6. The thickness of the insulating coating can be derived by measuring the size of the feedback effect. The spark detection mechanism 3 includes a power component 8, a probe brush 9 and a marking component 10. When the spark detection mechanism 3 detects the defect position, the defect is marked by the marking component 10. The workpiece positioning mechanism 2 includes a first positioning frame 11 and a second positioning frame 12. The workpiece is fixed by the clamping force between the first positioning frame 11 and the second positioning frame 12.

In some examples, a first cylinder 13 is disposed on the inner side of the first positioning frame 11, and a second cylinder 14 is disposed on the inner side of the second positioning frame 12. One end of the first cylinder 13 and the second cylinder 14 are both connected to a clamping plate 15. A motor 16 is disposed on the outer side of the first positioning frame 11, and the output shaft of the motor 16 is fixed to the first cylinder 13. The second positioning frame 12 and the second cylinder 14 are connected via a bearing seat 17, and the second cylinder 14 can rotate relative to the second positioning frame 12.

The workpiece positioning method is as follows: the first cylinder 13 drives the clamping disc 15 at one end thereof when it is working, and the second cylinder 14 drives the clamping disc 15 at one end thereof when it is working. The distance between the two sets of clamping discs 15 is controlled by controlling the telescopic stroke of the first cylinder 13 and the second cylinder 14. The distance between the two sets of clamping discs 15 is adjusted according to the size of the workpiece, and the workpiece is fixed between the two sets of clamping discs 15 to realize the installation of the workpiece. When disassembling, the first cylinder 13 and the second cylinder 14 drive the clamping disc 15 to reset, and the locking of the workpiece is released.

When the motor 16 is working, it drives the first cylinder 13 to rotate, and the first cylinder 13 drives the clamping disk 15 at one end thereof to rotate synchronously. Under the action of the contact friction between the clamping disk 15 and the workpiece, the second cylinder 14 and the clamping disk 15 at one end thereof are driven to rotate synchronously. The workpiece can rotate under the drive of the motor 16, and the rotation angle of the workpiece is controlled by the number of rotations and the rotation direction of the motor 16, so as to realize the rotation positioning of the workpiece.

In some examples, a second electric cylinder 18 is provided at the top of the cross plate 5, one end of the second electric cylinder 18 is connected to a connecting frame 19, the second electric cylinder 18 includes an electric push rod, one end of the electric push rod is fixedly connected to the connecting frame 19, and multiple groups of detection probes 6 are evenly distributed at the lower end of the connecting frame 19.

The thickness detection method of the workpiece insulating coating is as follows: the second electric cylinder 18 works to drive the connecting frame 19, and drives multiple groups of detection probes 6 through the connecting frame 19. The second electric cylinder 18 drives multiple groups of detection probes 6 to move downward synchronously, contact the surface of the insulating coating of the workpiece, and detect the thickness of the insulating coating. Multiple groups of detection probes 6 realize multi-point coating thickness detection of the workpiece coating.

In some examples, a first card seat 20 is provided on multiple groups of detection probes 6, and multiple groups of second card seats 21 are provided on the connecting frame 19, and the second card seats 21 correspond to the first card seats 20 one by one, and a sleeve 22, a sliding rod 23 and a spring 24 are provided between the second card seats 21 and the first card seats 20, and one end of the sliding rod 23 is slidably embedded in the interior of the sleeve 22, and the sliding rod 23 is slidably connected to the sleeve 22 to play a guiding role, and the spring 24 is located on the periphery of the sleeve 22 and the sliding rod 23.

Among them, when the second electric cylinder 18 drives multiple groups of detection probes 6 to be continuously pressed down, the spring 24 is compressed, and the slide rod 23 is embedded in the sleeve 22 for a distance. When the workpiece is a special-shaped workpiece, its upward surface is a non-planar structure. At this time, the multiple groups of detection probes 6 are continuously moved downward under the drive of the second electric cylinder 18, and several groups of detection probes 6 are in contact with the base surface to detect the coating thickness there. The other groups of detection probes 6 continue to move downward under the drive of the second electric cylinder 18, and the spring 24 is compressed accordingly until the multiple groups of detection probes 6 are respectively in contact with the coating surface of the workpiece, thereby realizing multi-point coating thickness detection of special-shaped workpieces, and facilitating the thickness detection of special-shaped workpieces.

In some examples, a push plate 25 is welded and fixed to the lower end of the horizontal plate 5, one end of the first electric cylinder 7 is fixed to the push plate 25, a first machine base 26 is provided at the top of the horizontal plate 5, and the first machine base 26 is electrically connected to the detection probe 6 through a first cable 27, and the circuit is connected through the first cable 27.

Among them, the coating thickness detection frame 4 is slidably connected to the cross plate 5. When the first electric cylinder 7 is working, it drives the push plate 25, and the push plate 25 drives the cross plate 5 to slide relative to the coating thickness detection frame 4, so as to adjust the positions of the multiple groups of detection probes 6, that is, the positions of the multiple groups of detection probes 6 relative to the workpiece are adjusted. After the position adjustment is completed, the multiple groups of detection probes 6 are driven downward by the second electric cylinder 18 to perform multi-point coating thickness detection on the workpiece. The horizontal positions of the multiple groups of detection probes 6 can be adjusted according to the position of the surface to be detected of the workpiece, thereby improving the flexibility of the detection process.

In some examples, the power assembly 8 includes a first linear motor module 28 and a second linear motor module 29, and a third electric cylinder 30 is arranged on the second linear motor module 29. One end of the third electric cylinder 30 is connected to the posture adjustment frame 31. The first linear motor module 28 and the second linear motor module 29 are vertically arranged. The position of the probe brush 9 in the X-axis direction is adjusted by the first linear motor module 28, the position of the probe brush 9 in the Z-axis direction is adjusted by the second linear motor module 29, and the position of the probe brush 9 in the Y-axis direction is adjusted by the third electric cylinder 30, thereby realizing multi-position adjustment of the probe brush 9. The position of the probe brush 9 can be adjusted accordingly according to the surface shape of the coating to be detected on the workpiece, so that the probe brush 9 contacts the coating surface to perform defect detection on the coating.

In some examples, a first stepper motor 32 is provided on the posture adjustment frame 31, one end of the first stepper motor 32 is connected to the first driving frame 33, a second stepper motor 34 is provided on the first driving frame 33, one end of the second stepper motor 34 is connected to the second driving frame 35, and the probe brush 9 is fixedly set on the second driving frame 35. When the first stepper motor 32 is working, it drives the first driving frame 33 to rotate, and the first driving frame 33 drives the probe brush 9 at the end to rotate synchronously. When the second stepper motor 34 is working, it drives the second driving frame 35 to rotate, and the second driving frame 35 drives the probe brush 9 at the end to rotate synchronously. The angle of the probe brush 9 is adjusted by controlling the number of rotations and the rotation direction of the first stepper motor 32 and the second stepper motor 34.

Among them, the posture adjustment frame 31 can flexibly adjust the angle of the probe brush 9 according to the detection requirements, adjust the posture of the probe brush 9, facilitate the scanning detection of special-shaped workpieces, eliminate detection blind spots, and improve the detection quality.

Among them, during the process of the electric spark detection mechanism 3 performing coating defect detection on the workpiece, the position of the probe brush 9 is adjusted by the power component 8 so that the probe brush 9 contacts the coating surface of the workpiece, and the coating defect detection is performed based on the characteristics of the electric spark phenomenon. The motor 16 of the workpiece positioning mechanism 2 drives the workpiece to rotate, so that the probe brush 9 of the electric spark detection mechanism 3 can scan along the entire outer surface of the workpiece. During the scanning process, the posture of the probe brush 9 is adjusted according to the surface shape of the workpiece coating to achieve all-round and non-dead-angle detection of the workpiece. The overall detection device is convenient for detecting special-shaped workpieces.

In some examples, a second base 36 is disposed on one side of the second linear motor module 29 , and the second base 36 is electrically connected to the brush 9 via a second cable 37 , and the circuit is connected via the second cable 37 .

By adopting the above technical solution:

The coating thickness detection frame 4 includes multiple groups of elastically retractable detection probes 6. The multiple groups of detection probes 6 move axially under the drive of the second electric cylinder 18, and the multiple groups of detection probes 6 slide horizontally under the drive of the first electric cylinder 7. The multiple groups of detection probes 6 can realize multi-point detection of the coating thickness of the workpiece, and are suitable for special-shaped workpieces;

The power assembly 8 realizes multi-position adjustment of the probe brush 9, the posture adjustment frame 31 adjusts the posture of the probe brush 9, and the motor 16 of the workpiece positioning mechanism 2 can drive the workpiece to rotate, which is convenient for scanning and detecting special-shaped workpieces, eliminates detection blind spots, and improves detection quality;

The overall detection device integrates defect detection and thickness detection of the insulating coating. There is no need to transfer the workpiece during the detection process, which improves the detection efficiency.

Embodiment 2:

Based on Example 1, this example introduces a specific structure of a marking component 10 in a workpiece insulating coating detection device. As shown in Figures 9 and 10, the marking component 10 is fixedly arranged on the second driving frame 35. The marking component 10 includes a vertical plate 38. An ink cartridge 39 is arranged on one side surface of the vertical plate 38. A fourth electric cylinder 40 is arranged on the other side surface of the vertical plate 38. One end of the fourth electric cylinder 40 is connected to an ink storage block 41. The fourth electric cylinder 40 includes an electric push rod, which is fixed to the ink storage block 41. A marking head 42 is arranged at one end of the ink storage block 41. The ink cartridge 39 and the ink storage block 41 are connected by an ink supply hose 43. The ink supply hose 43 has a certain elastic tensile force.

Among them, the ink cartridge 39 stores ink for marking, the ink supply hose 43 connects the ink cartridge 39 and the ink storage block 41, the ink storage block 41 is pre-stored with ink for marking, and the marking head 42 is an ink-absorbing material that can absorb the ink inside the ink storage block 41 to enable itself to have writing ability. When the electric spark detection mechanism 3 detects the defect position, the defect is marked by the marking component 10.

The vertical plate 38 of the marking assembly 10 is fixed to the second driving frame 35 , and the position of the marking assembly 10 changes accordingly with the change of the position of the probe brush 9 .

The marking method of the marking component 10 is: the posture of the marking component 10 is adjusted by the power component 8 and the posture adjustment frame 31. When the fourth electric cylinder 40 works, it drives the ink storage block 41 and the marking head 42 to move. The marking head 42 contacts the defect of the insulating coating and leaves a mark to achieve marking.

In some examples, a viewing window 45 is provided on the side of the ink cartridge 39 , and an ink replenishing port 44 is provided on the top of the ink cartridge 39 . The liquid level of the ink inside the ink cartridge 39 can be observed through the viewing window 45 . When the liquid level is insufficient, ink is replenished through the ink replenishing port 44 .

By adopting the above technical solution:

When the electric spark detection mechanism 3 detects the defective position of the insulating coating, the defective position is marked by the marking component 10 to facilitate subsequent processing without manual marking, thus saving time and effort.

Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims (10)

1. A workpiece insulating coating detection device, comprising a base plate (1), characterized in that: a workpiece positioning mechanism (2), an electric spark detection mechanism (3) and a coating thickness detection frame (4) are arranged on the base plate (1), a first electric cylinder (7) is installed at the rear end of the coating thickness detection frame (4), one end of the first electric cylinder (7) is connected to a transverse plate (5), and a plurality of detection probes (6) are arranged at the lower end of the transverse plate (5), the electric spark detection mechanism (3) comprises a power assembly (8), a probe brush (9) and a marking assembly (10), and the workpiece positioning mechanism (2) comprises a first positioning frame (11) and a second positioning frame (12). 2. A workpiece insulating coating detection device according to claim 1, characterized in that: a first cylinder (13) is provided on the inner side surface of the first positioning frame (11), a second cylinder (14) is provided on the inner side surface of the second positioning frame (12), one end of the first cylinder (13) and the second cylinder (14) are both connected to a clamping plate (15), an electric motor (16) is provided on the outer side surface of the first positioning frame (11), and the output shaft of the electric motor (16) is fixed to the first cylinder (13), and the second positioning frame (12) and the second cylinder (14) are connected via a bearing seat (17). 3. A workpiece insulating coating detection device according to claim 1, characterized in that: a second electric cylinder (18) is arranged at the top of the horizontal plate (5), one end of the second electric cylinder (18) is connected to a connecting frame (19), and a plurality of groups of detection probes (6) are evenly distributed at the lower end of the connecting frame (19). 4. A workpiece insulating coating detection device according to claim 3, characterized in that: a plurality of groups of the detection probes (6) are each provided with a first holder (20), a plurality of groups of second holders (21) are provided on the connecting frame (19), and the second holders (21) correspond one-to-one to the first holders (20), and a sleeve (22), a slide rod (23) and a spring (24) are provided between the second holders (21) and the first holder (20), and one end of the slide rod (23) is slidably embedded in the interior of the sleeve (22), and the spring (24) is located on the periphery of the sleeve (22) and the slide rod (23). 5. A workpiece insulating coating detection device according to claim 1, characterized in that: a push plate (25) is welded and fixed to the lower end of the horizontal plate (5), one end of the first electric cylinder (7) is fixed to the push plate (25), and a first machine base (26) is provided at the top of the horizontal plate (5), and the first machine base (26) and the detection probe (6) are electrically connected through a first cable (27). 6. A workpiece insulation coating detection device according to claim 1, characterized in that: the power assembly (8) includes a first linear motor module (28) and a second linear motor module (29), a third electric cylinder (30) is arranged on the second linear motor module (29), and one end of the third electric cylinder (30) is connected to a posture adjustment frame (31). 7. A workpiece insulation coating detection device according to claim 6, characterized in that: a first stepper motor (32) is arranged on the posture adjustment frame (31), one end of the first stepper motor (32) is connected to the first driving frame (33), a second stepper motor (34) is arranged on the first driving frame (33), one end of the second stepper motor (34) is connected to the second driving frame (35), and the detection brush (9) is fixedly arranged on the second driving frame (35). 8. A workpiece insulating coating detection device according to claim 7, characterized in that: a second machine base (36) is provided on one side of the second linear motor module (29), and the second machine base (36) and the probe brush (9) are electrically connected through a second cable (37). 9. A workpiece insulating coating detection device according to claim 8, characterized in that: the marking component (10) is fixedly arranged on the second driving frame (35), the marking component (10) includes a vertical plate (38), an ink cartridge (39) is arranged on one side surface of the vertical plate (38), a fourth electric cylinder (40) is arranged on the other side surface of the vertical plate (38), one end of the fourth electric cylinder (40) is connected to the ink storage block (41), one end of the ink storage block (41) is provided with a marking head (42), and the ink cartridge (39) and the ink storage block (41) are connected through an ink supply hose (43). 10. A workpiece insulating coating detection device according to claim 9, characterized in that a viewing window (45) is provided on the side of the ink cartridge (39), and an ink replenishing port (44) is provided at the top of the ink cartridge (39).