Digital measuring projector for power cable section detection
By designing a closed-loop integrated slicing and imaging system in the cable inspection instrument, the problems of slice transfer deformation and dust contamination in cable slicing inspection were solved, and high-precision automatic inspection was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI QIWU VISION TECHNOLOGY CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing cable slicing inspection process, the slices are prone to deformation and breakage during transfer, resulting in large optical measurement errors. Furthermore, dust pollution in open environments affects the inspection accuracy.
Design a closed integrated slicing and imaging system. By integrating a cutter into the measuring instrument body, the system can automatically slice and transport the outer layer of the cable, avoiding multiple manual transfers and contamination, and employing an automatic detection method.
It achieves high-precision cable slice inspection, avoids slice deformation and dust pollution, and improves the accuracy and reliability of inspection.
Smart Images
Figure CN224398599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable testing technology, and in particular to a digital measuring projector for testing cross-sections of power cables. Background Technology
[0002] Cable cross-section inspection is a key means of evaluating the physical properties of cable insulation and sheath materials. It is mainly used for quality control, aging assessment and standard compliance verification. Digital measurement projectors are key equipment in cable cross-section inspection. These instruments are usually called "cable cross-section projectors" or "intelligent imagers" in the industry. They are used to perform high-precision optical measurements of parameters such as the thickness, eccentricity and cross-sectional area of cable insulation and sheath.
[0003] The specific process is as follows: First, the inner core of the cable is removed, then a slicer is used for manual slicing, and tweezers or other tools are used to transfer the slices to the operating table for testing.
[0004] However, in the above process, to prevent deformation or breakage during the transfer of slices, thicker samples are usually cut. Thick slices are prone to optical diffraction when light is transmitted, resulting in blurred projection edges and significantly increased deviation when the software recognizes the contour. When the slices are transferred multiple times, dust falls on the surface of the slices in the open environment, causing dust to adhere and be misidentified as structural defects (such as bubbles or depressions) during projection imaging. The pressure from repeated clamping or placement of tweezers causes physical deformation of soft materials (such as cross-linked polyethylene), resulting in distorted thickness measurements. Therefore, there is an urgent need for a new type of digital measurement projector to solve the current problems. Summary of the Invention
[0005] To address the aforementioned problems, this invention provides a digital measuring projector for power cable slice inspection, which can form a closed integrated slicing and imaging system to achieve automatic inspection, with no exposure throughout the process, no multiple manual transfers, avoidance of human contact, elimination of contamination sources, and no need for tweezers to handle the sliced samples, thus preventing damage or affecting the inspection accuracy.
[0006] The technical solution adopted to solve the above-mentioned technical problems is: a digital measuring projector for power cable slicing and inspection, including a measuring instrument body, a cable outer layer, an upper shell, a support plate, a cutter, a guide channel, and an inlet hole. The upper shell is connected above the measuring instrument body, the support plate is connected inside the upper shell, and an outlet hole is opened on the support plate. The cutter is reciprocatedly connected to the support plate. The guide channel is connected inside the upper shell, the inlet end of the guide channel cooperates with the outlet hole, and the outlet end of the guide channel is located below the upper shell. An inlet hole is opened on one side of the upper shell. The cable outer layer enters through the inlet hole and exits through the outlet hole. After the cable outer layer is sliced, it is transported to the operating table of the measuring instrument body through the guide channel.
[0007] Furthermore, it also includes a positioning plate, a positioning screw, and a scale line. The positioning plate is slidably connected to the support plate, and the sliding direction of the positioning plate is parallel to the axial direction of the outer layer of the cable. One end of the positioning screw is rotatably connected to the positioning plate, the positioning screw passes through the support plate, the positioning screw is threadedly engaged with the support plate, the positioning screw passes through the upper housing, the positioning screw is rotatably connected to the upper housing, and a scale line is provided on the outer end of the positioning screw.
[0008] Furthermore, it also includes a guide rod, a first spring, a rack, an incomplete gear, and a motor. Guide rods are connected to both sides of the support plate. The guide rods pass through the cutter. The cutter is slidably connected to the guide rods. A first spring is sleeved on the guide rods. The rack is connected to the upper side of the cutter. The incomplete gear is rotatably connected to the support plate. The incomplete gear cooperates with the rack. The motor is connected to the support plate. The output shaft of the motor is fixedly connected to the incomplete gear.
[0009] Furthermore, it also includes multiple clamping arms, torsion springs, and multiple rollers. The multiple clamping arms are evenly distributed along the circumferential direction at the outlet of the support plate. The clamping arms and the cutter are respectively on both sides of the support plate. The clamping arms are rotatably connected to the support plate. A torsion spring is provided at the rotatable connection of the clamping arms. The multiple rollers correspond one-to-one with the clamping arms. The rollers are rotatably connected to the ends of the clamping arms. The outer layer of the cable is clamped between the multiple rollers.
[0010] Furthermore, it also includes multiple support rods, pressure plates, and multiple second springs. The multiple support rods are connected to the outside of the upper housing and are located at the inlet. The pressure plate is slidably connected to the support rod and passes through the pressure plate. The pressure plate is used to press the tail end of the outer layer of the cable. The multiple second springs correspond one-to-one with the support rods and are sleeved on the support rods.
[0011] The beneficial effects of this utility model are as follows: This utility model integrates a cutter inside the upper housing of the measuring instrument body. The outer layer of the cable to be tested is inserted through the inlet hole and brought out through the outlet hole. The cable is then sliced by the reciprocating cutter. After slicing, the sample is directly transported to the operating table of the measuring instrument body through the guide channel for testing. This completely eliminates the need for clamping and transferring the slices, and allows for direct thinning, preventing increased deviations due to thicker slices. This forms a closed integrated slicing and imaging system, achieving automatic detection without exposure or repeated manual transfers, avoiding human contact, eliminating sources of contamination, and preventing damage or impact on detection accuracy by eliminating the need for tweezers to handle the sliced samples. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a schematic diagram showing the position of the outlet hole in this utility model.
[0014] Figure 3 This is a schematic diagram showing the position of the cutting blade in this utility model.
[0015] Figure 4 This is a schematic diagram of the positioning plate structure of this utility model.
[0016] Figure 5 This is a schematic diagram of the clamping arm position of this utility model.
[0017] Reference numerals in the attached drawings: 1. Measuring instrument body; 2. Outer layer of cable; 3. Upper housing; 4. Support plate; 5. Outlet hole; 6. Cutter; 7. Guide channel; 8. Inlet hole; 9. Positioning plate; 10. Positioning screw; 11. Scale line; 12. Guide rod; 13. First spring; 14. Rack; 15. Incomplete gear; 16. Motor; 17. Clamping arm; 18. Torsion spring; 19. Roller; 20. Support rod; 21. Pressure plate; 22. Second spring. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0019] like Figures 1-5 As shown, this embodiment provides a digital measuring projector for power cable slicing inspection, including a measuring instrument body 1, a cable outer layer 2, an upper housing 3, a support plate 4, a cutter 6, a guide channel 7, and an inlet hole 8. The upper housing 3 is connected above the measuring instrument body 1, the support plate 4 is connected inside the upper housing 3, and an outlet hole 5 is provided on the support plate 4. The cutter 6 is reciprocally connected to the support plate 4, the guide channel 7 is connected inside the upper housing 3, the inlet end of the guide channel 7 cooperates with the outlet hole 5, and the outlet end of the guide channel 7 is located below the upper housing 3. An inlet hole 8 is provided on one side of the upper housing 3. The cable outer layer 2 enters through the inlet hole 8 and exits through the outlet hole 5. After the cable outer layer 2 is sliced, it is transported to the operating table of the measuring instrument body 1 through the guide channel 7.
[0020] In the above embodiments, the measuring instrument body 1 refers to a digital measuring projector. Its detection principle and operation process are based on existing technologies. By integrating a cutter 6 into the upper housing 3 of the measuring instrument body 1, the outer layer 2 of the cable to be tested is inserted through the inlet hole 8 and then exited through the outlet hole 5. The cable is then sliced by the reciprocating cutter 6. After slicing, the sample is directly transported to the operating table of the measuring instrument body 1 through the guide channel 7 for detection. This completely eliminates the need for clamping and transferring the slices, and allows for direct thinning, preventing increased deviation due to thickness. This forms a closed integrated slicing and imaging system, achieving automatic detection without exposure or repeated manual transfer, avoiding human contact, eliminating sources of contamination, and preventing damage or impact on detection accuracy by not needing to handle the sliced sample with tweezers.
[0021] Specifically, it also includes a positioning plate 9, a positioning screw 10, and a scale line 11. The positioning plate 9 is slidably connected to the support plate 4, and the sliding direction of the positioning plate 9 is parallel to the axial direction of the outer layer 2 of the cable. One end of the positioning screw 10 is rotatably connected to the positioning plate 9. The positioning screw 10 passes through the support plate 4 and is threadedly engaged with the support plate 4. The positioning screw 10 passes through the upper housing 3 and is rotatably connected to the upper housing 3. A scale line 11 is provided on the outer end of the positioning screw 10.
[0022] In the above embodiments, the positioning plate 9 is slid by rotating the positioning screw 10, and the distance between the positioning plate 9 and the cutter 6 and the outlet hole 5 is adjusted, thereby adjusting the thickness of the slice. The position of the positioning plate 9 can be easily confirmed by the scale line 11, thereby determining the thickness of the slice.
[0023] Specifically, it also includes a guide rod 12, a first spring 13, a rack 14, an incomplete gear 15, and a motor 16. Guide rods 12 are connected to both sides of the support plate 4. The guide rods 12 pass through the cutter 6. The cutter 6 is slidably connected to the guide rods 12. The first spring 13 is sleeved on the guide rods 12. The rack 14 is connected to the upper side of the cutter 6. The incomplete gear 15 is rotatably connected to the support plate 4. The incomplete gear 15 cooperates with the rack 14. The motor 16 is connected to the support plate 4. The output shaft of the motor 16 is fixedly connected to the incomplete gear 15.
[0024] In the above embodiments, the motor 16 drives the incomplete gear 15 to rotate, which in turn drives the rack 14 to move, so that the cutter 6 performs a slicing operation. After one slicing is completed, the incomplete gear 15 and the rack 14 are in a non-meshing state, and the cutter 6 is reset by the action of the first spring 13.
[0025] Specifically, it also includes multiple clamping arms 17, torsion springs 18, and multiple rollers 19. The multiple clamping arms 17 are evenly distributed along the circumference at the outlet holes 5 of the support plate 4. The clamping arms 17 and the cutter 6 are respectively on both sides of the support plate 4. The clamping arms 17 are rotatably connected to the support plate 4. A torsion spring 18 is provided at the rotatable connection of the clamping arms 17. The multiple rollers 19 correspond one-to-one with the clamping arms 17. The rollers 19 are rotatably connected to the ends of the clamping arms 17. The outer layer 2 of the cable is clamped between the multiple rollers 19.
[0026] In the above embodiments, the torsion spring 18 provides force to the clamping arm 17, causing the clamping arm 17 to drive the roller 19 to rotate, so that the roller 19 stably clamps the outer layer 2 of the cable, and the setting of the roller 19 facilitates the straight entry of the outer layer 2 of the cable.
[0027] Specifically, it also includes multiple support rods 20, pressure plates 21, and multiple second springs 22. The multiple support rods 20 are connected to the outside of the upper housing 3 and are located at the inlet hole 8. The pressure plate 21 is slidably connected to the support rods 20 and passes through the pressure plate 21. The pressure plate 21 is used to press the tail end of the outer layer 2 of the cable. The multiple second springs 22 correspond one-to-one with the support rods 20 and are sleeved on the support rods 20.
[0028] In the above embodiments, the second spring 22 provides force to the pressure plate 21, and the pressure plate 21 presses the outer layer 2 of the cable tightly onto the positioning plate 9 to perform a stable slicing operation.
[0029] The working principle of this utility model is as follows: First, clean the outer layer 2 of a section of coreless cable to prevent it from having obvious impurities and dust. According to the required slice thickness, rotate the positioning screw 10. The positioning screw 10 is threaded with the support plate 4. The positioning screw 10 rotates and the slice thickness is confirmed according to the scale line 11. Then, adjust the distance between the positioning plate 9 and the cutter 6 and the outlet hole 5.
[0030] After adjustment, insert the outer layer 2 of the cable into the inlet 8. The outer layer 2 of the cable enters between multiple rollers 19. Due to the action of the torsion spring 18, the multiple rollers 19 stably clamp the outer layer 2 of the cable, and the rollers 19 facilitate the stable insertion of the outer layer 2 of the cable until the first end of the outer layer 2 abuts against the positioning plate 9. Release the pulled pressure plate 21, so that the pressure plate 21 presses against the tail end of the outer layer 2 of the cable. It is stably pressed by the second spring 22. Then run the motor 16. The motor 16 drives the incomplete gear 15 to rotate. After the gear 15 rotates to a certain angle, it drives the rack 14 to move. The rack 14 drives the cutter 6 to move downward. The first spring 13 is compressed. The cutter 6 moves downward and cooperates with the outlet hole 5 to slice the outer layer 2 of the cable. The slice falls into the guide channel 7 and falls directly onto the operating table through the guide channel 7. After completing one slicing operation, the motor 16 stops and the cutter 6 is reset by the first spring 13. In order to further ensure the slicing quality, the first few slices are discarded and the subsequent slices are selected. Then, the standard procedure is used for testing.
[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.
Claims
1. A digital measuring projector for detecting slices of power cables, comprising a measuring instrument body (1), a cable outer layer (2), and an upper housing (3), wherein the upper housing (3) is connected above the measuring instrument body (1), characterized in that, Also includes: A support plate (4) is connected to the inside of the upper housing (3), and an outlet hole (5) is provided on the support plate (4). The cutter (6) is reciprocally connected to the support plate (4); The guide channel (7) is connected inside the upper housing (3). The inlet end of the guide channel (7) is engaged with the outlet hole (5), and the outlet end of the guide channel (7) is located below the upper housing (3). The upper housing (3) has an inlet hole (8) on one side, through which the outer layer (2) of the cable enters and exits through the outlet hole (5); After the outer layer (2) of the cable is sliced, it is transported to the operating table of the measuring instrument body (1) through the guide channel (7).
2. The digital measuring projector for power cable slice inspection according to claim 1, characterized in that, Also includes: The positioning plate (9) is slidably connected to the support plate (4), and the sliding direction of the positioning plate (9) is parallel to the axial direction of the outer layer (2) of the cable. The positioning screw (10) is rotatably connected to the positioning plate (9) at one end. The positioning screw (10) passes through the support plate (4). The positioning screw (10) is threadedly engaged with the support plate (4). The positioning screw (10) passes through the upper housing (3). The positioning screw (10) is rotatably connected to the upper housing (3). The outer end of the positioning screw (10) is provided with a scale line (11).
3. The digital measuring projector for power cable slice inspection according to claim 1, characterized in that, Also includes: Guide rod (12), both sides of the support plate (4) are connected to guide rod (12), the guide rod (12) passes through the cutter (6), and the cutter (6) is slidably connected to the guide rod (12); The first spring (13) is sleeved on the guide rod (12); A rack (14) is connected to the upper side of the cutter (6); An incomplete gear (15) is rotatably connected to the support plate (4), and the incomplete gear (15) is engaged with the rack (14); The motor (16) is connected to the support plate (4), and the output shaft of the motor (16) is fixedly connected to the incomplete gear (15).
4. The digital measuring projector for power cable slice inspection according to claim 1, characterized in that, Also includes: Multiple clamping arms (17) are evenly distributed along the circumferential direction at the outlet (5) of the support plate (4). The clamping arms (17) and the cutter (6) are respectively on both sides of the support plate (4). The clamping arms (17) are rotatably connected to the support plate (4). Torsion spring (18), a torsion spring (18) is provided at the rotatable connection of the clamping arm (17). Multiple rollers (19) correspond one-to-one with the clamping arm (17), and the rollers (19) are rotatably connected to the ends of the clamping arm (17); The outer layer (2) of the cable is held between the plurality of rollers (19).
5. A digital measuring projector for power cable slice inspection according to claim 1, characterized in that, Also includes: Multiple support rods (20) are connected to the outside of the upper housing (3), and the support rods (20) are located at the inlet (8); A pressure plate (21) is slidably connected to the support rod (20), the support rod (20) passes through the pressure plate (21), and the pressure plate (21) is used to press the tail end of the outer layer (2) of the cable; Multiple second springs (22) correspond one-to-one with the support rod (20), and the second springs (22) are sleeved on the support rod (20).