Device and method for detecting wall thickness of pinhole piece of electric connector

Abstract

The invention relates to the technical field of pinhole piece wall thickness detection, in particular to an electric connector pinhole piece wall thickness detection device and method, a swing arm is rotationally installed on an adjusting frame, the swing arm is pressed on the upper end face of a pinhole piece, and a limiting piece for limiting the swing arm to rotate away from the pinhole piece is arranged on the adjusting frame; the device has the beneficial effects that by arranging the detection conical column with the standard size, the pressing height of the hole opening of the pinhole piece and the conical surface of the detection conical column and the inner diameter of the hole opening are detected, meanwhile, the thickness measuring probe is accurately inserted into the detection hole, the thickness measuring probe can conveniently detect the inner contour of the detection hole, and the detection efficiency is improved in the detection process. During detection, only the pinhole piece needs to be controlled to stably descend, so that the detection efficiency is greatly improved, the detection steps are simplified, the device is suitable for large-scale detection, and whether the internal contour of the detection hole is qualified or not can be judged by comparing the inner diameter data of the orifice with the detection data of the thickness measuring probe.

Description

Technical Field

[0001] The present invention relates to the technical field of wall thickness detection of pinhole components, and in particular to a device and method for detecting the wall thickness of a pinhole component of an electrical connector. Background Art

[0002] In the connection structure of an electrical connector, in order to reduce resistance, ensure connection stability, and avoid mutual interference, the connection structure is usually set to a multi-group pinhole plug-in method. Therefore, the size of the pinhole plug-in is an important factor affecting the stability of the circuit connection.

[0003] Existing patent: CN113776444B A laser-based electronic thickness gauge comprises a base, wherein two top plates are provided above the base, wherein one side of one of the top plates is fixedly connected to a first fixing ring, the bottom of the top plate is fixedly connected to two first fixing columns, the bottom of the first fixing columns is fixedly connected to a first slider, two first slide grooves are provided on the top of the base, two first support plates are provided above the base, the two ends of the first support plates are respectively connected to the two first fixing columns, an object to be measured is provided above the base, a first movable plate is provided above the first support plate, a plurality of support plates are fixedly connected to one side of the first support plate, and a plurality of first pressing plates are fixedly connected to one side of the first movable plate. The laser-based electronic thickness gauge described in the present invention belongs to the technical field of thickness measuring instruments, and can move the object to be measured and the laser displacement sensor relative to the object to be measured, thereby detecting the thickness of different positions on the object to be measured.

[0004] In the existing technology, wall thickness detection is usually carried out using equipment such as ultrasonic wall thickness detection, structured light measurement and laser triangulation. The existing thickness measuring equipment has a complex structure and requires complicated installation steps to achieve detection. These detection equipment are not suitable for the size detection of large quantities of pinhole parts, especially the structure in which multiple groups of jacks are provided in a single pinhole part. Summary of the Invention

[0005] The object of the present invention is to provide a device and method for detecting the wall thickness of a pinhole component of an electrical connector, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for detecting the wall thickness of a pinhole part of an electrical connector comprises a detection frame, wherein the detection frame is provided with a pair of symmetrically distributed lifting frames with vertical lifting drive, an upper frame for mounting a laser instrument is provided at the upper end of the detection frame, a detection cone column fixed to the detection frame is vertically provided in the gap between the pair of lifting frames, a support frame for supporting the pinhole part is provided on the side of the lifting frame close to the detection cone column, and an altimeter assembly for measuring the height of the support frame is connected to the other side of the lifting frame, a detection host is provided in the detection frame, a thickness measuring probe electrically connected to the detection host is provided at the upper end end of the detection cone column, a driving assembly for driving the thickness measuring probe to lift and lower is provided in the detection cone column, an adjusting frame is provided at the upper end of the lifting frame, a swing arm is rotatably mounted on the adjusting frame, the swing arm is pressed onto the upper end surface of the pinhole part, and a limit member is provided on the adjusting frame for limiting the swing arm from rotating away from the pinhole part.

[0007] Preferably, a pair of hydraulic telescopic drive rods are symmetrically installed vertically on the detection frame, the lower end of the lifting frame is fixed on the drive rod, the supporting frame is provided with an image collector for collecting the image of the lower end surface of the pinhole part, the upper end of the upper frame is provided with a magnetic plate, the upper end of the laser instrument is provided with an adsorption plate connected to the magnetic plate, and the upper frame is provided with an imager that is electrically connected to the image collector and projects the collected image onto the upper end surface of the pinhole part.

[0008] Preferably, the altimeter assembly includes a vernier caliper component and a side scale rod, the vernier caliper component includes a main scale component fixed on the side scale rod and a secondary scale component slidably mounted on the main scale component, the lower end of the side scale rod is locked and fixed on the detection frame, the secondary scale component is connected to the lifting frame through a connecting rod, and the origin of the secondary scale component is flush with the supporting surface of the support frame, and the origin of the main scale component is flush with the upper end of the detection cone column.

[0009] Preferably, a longitudinal through slot is vertically provided on the detection frame, a screw hole vertically connected to the longitudinal through slot is provided on the side wall of the detection frame, a locking bolt is threadedly installed in the screw hole, the lower end of the side ruler rod is vertically inserted in the longitudinal through slot, the end of the locking bolt is pressed on the side wall of the side ruler rod, and sliding slots are provided on the front and rear side walls of the main ruler part, and the auxiliary ruler part is slidably inserted in the sliding slots.

[0010] Preferably, the limiting member includes a fixed ratchet and a collar, a main shaft is provided at the upper end of the adjusting frame, the fixed ratchet is fixedly sleeved on the main shaft, the outer wall of the fixed ratchet is provided with multiple groups of inclined ratchets distributed in a circumferential array, the collar is fixed to one end of the swing arm, the collar is rotatably sleeved on the end of the main shaft, a slider is elastically and slidably installed in the collar, a paddle engaged with the ratchet on the fixed ratchet is provided on one side of the slider, and the ratchet on the fixed ratchet limits the paddle to rotate only toward the side of the pinhole member.

[0011] Preferably, a telescopic groove is provided on the sleeve ring, a sleeve column is provided in the telescopic groove, the slider is slidably sleeved on the sleeve column, and one end of the sleeve column is sleeved with a first spring, one end of the first spring is against the slider, and a pressure groove is provided on the side of the swing arm close to the telescopic groove, and the upper end of the slider is provided with a horizontal plate located at the upper end of the telescopic groove and extending into the pressure groove, and the upper end of the horizontal plate is provided with a rough layer.

[0012] Preferably, the support frame is provided with multiple groups of rotatably mounted longitudinal rollers, the end of the swing arm pressed on the upper end of the pinhole member is provided with a rotating seat, and the rotating seat is provided with multiple groups of rotatably mounted transverse rollers distributed in a circumferential array on bearings, the transverse rollers are distributed vertically to the longitudinal rollers, and the lower end arc outer wall of the transverse roller is pressed on the upper end face of the pinhole member, and the lower end of the pinhole member is pressed on the upper end arc outer wall of the longitudinal roller.

[0013] Preferably, the lower end of the detection cone is provided with a fixing seat fixedly connected to the detection frame by bolts, and the lower end of the detection cone is provided with a lifting slot. The middle section of the thickness measuring probe vertically penetrates the detection cone and extends into the lifting slot. The lower end of the thickness measuring probe is provided with a slide located in the lifting slot. The lower end of the slide is connected to the detection host through a folded data cable. The drive assembly is arranged in the lifting slot and is used to drive the slide to rise and fall.

[0014] Preferably, the driving assembly includes a second spring, an annular airbag and a micro air pump electrically connected to the detection host, the annular airbag is pressed between the slide and the detection frame, the second spring is pressed between the slide and the upper inner wall of the lifting slot, and the annular airbag is connected to the micro air pump.

[0015] A detection method according to the device for detecting the wall thickness of a pinhole component of an electrical connector, the detection method comprising the following steps: Step 1: Place the pinhole component to be tested on the support bracket with the hole to be tested facing downwards and adjust it to the position corresponding to the detection cone. Then, use the swing arm and the limiter to prevent the pinhole component from rising when it is pressed against the cone surface of the detection cone, thereby limiting the upward movement of the pinhole component. Step 2: The lifting frame descends, driving the detection hole of the pinhole component to be plugged into the detection cone. When it descends until the opening of the detection hole and the outer wall of the cone surface of the detection cone are pressed together, the height of the hole opening at this time is measured by the height gauge assembly. Since the size of the detection cone is fixed, the outer diameter of the detection cone at this height is the inner diameter of the detection hole. The inner diameter of the detection hole can be quickly calculated based on the measured height and the size of the detection cone according to trigonometric functions. Step 3: Use the driving component to drive the thickness measuring probe to detect the inner wall thickness of the detection hole, so as to obtain the internal contour size of the detection hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a detection cone with a standard size, thereby detecting the height of the pinhole part's orifice and the detection cone surface, detecting the inner diameter of the orifice, and at the same time allowing the thickness measuring probe to be accurately inserted into the detection hole, making it convenient for the thickness measuring probe to detect the inner contour of the detection hole. During the detection process, it is only necessary to control the pinhole part to steadily descend, thereby greatly improving the detection efficiency, simplifying the detection steps, and being suitable for large-scale detection. At the same time, the orifice inner diameter data can be compared with the detection data of the thickness measuring probe to determine whether the inner contour of the detection hole is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the detection structure of the present invention; Figure 2 for Figure 1 A magnified view of the structure at center A; Figure 3 Schematic diagram of the detection cone three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed ratchet and the collar assembly of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the slider of the present invention being installed on the collar; Figure 6 This is a schematic diagram of the three-dimensional structure of the bottom of the detection cone column of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the swing arm of the present invention.

[0018] In the figure: 1. Detection frame; 2. Detection host; 3. Upper frame; 4. Driving rod; 5. Lifting frame; 6. Support frame; 7. Adjustment frame; 8. Detection cone; 9. Locking bolt; 10. Main scale piece; 11. Secondary scale piece; 12. Slide; 13. Connecting rod; 14. Horizontal roller; 15. Side scale rod; 16. Screw hole; 17. Longitudinal slot; 18. Magnetic plate; 19. Image collector; 20. Fixed ratchet; 21. Laser instrument; 22. Adsorption plate; 23. Imager; 24. Swing arm; 25. Longitudinal roller; 26. Main shaft; 27. Ring; 28. Telescopic slot; 29. ​​Slider; 30. Pick; 31. Column; 32. Pressing groove; 33. First spring; 34. Second spring; 35. Fixed seat; 36. Thickness gauge probe; 37. Rotating seat; 38. Slide plate; 39. Lifting slot; 40. Data cable; 41. Annular airbag. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 7 , the present invention provides a technical solution: Example 1: A device for detecting the wall thickness of a pinhole part of an electrical connector includes a detection frame 1, on which a pair of symmetrically distributed vertical lifting and lowering frames 5 are provided. A supporting frame 6 for supporting the pinhole part is provided on one side of the lifting frame 5 close to the detection cone 8, and the other side of the lifting frame 5 is connected to a height meter assembly for measuring the height of the supporting frame 6.

[0021] By setting up a supporting frame 6 and a lifting frame 5, the lower end of the pinhole component is supported, and the pinhole component is driven to descend at the same time, so that the detection hole and the detection cone column 8 are plugged into each other, and the height of the pressing position between the detection hole opening and the conical surface of the detection cone column 8 is quickly detected by using the height meter assembly.

[0022] An adjusting frame 7 is provided at the upper end of the lifting frame 5, on which a swing arm 24 is rotatably mounted. The swing arm 24 is pressed against the upper end surface of the pinhole component, and a limiting member is provided on the adjusting frame 7 to limit the swing arm 24 from rotating away from the pinhole component.

[0023] By providing a rotating swing arm 24 and an angle-limiting limiter, it is ensured that it is pressed against the upper end of the pinhole part, thereby preventing the pinhole part from moving upward and separating from the support bracket 6 when the detection hole opening is pressed against the conical surface of the detection cone column 8, thereby improving the accuracy of the height measurement of the altimeter assembly.

[0024] An upper frame 3 for installing a laser instrument 21 is provided at the upper end of the detection frame 1. A detection cone column 8 fixed on the detection frame 1 is vertically provided in the gap between a pair of lifting frames 5. A detection host 2 is provided in the detection frame 1. A thickness measuring probe 36 electrically connected to the detection host 2 is provided at the upper end of the detection cone column 8. A driving component for driving the thickness measuring probe 36 to rise and fall is provided in the detection cone column 8.

[0025] The thickness measuring probe 36 is provided to detect the contour size of the inner wall of the detection hole during the plugging process. The driving component drives the thickness measuring probe 36 to extend further into the detection hole, thereby increasing the detection range and improving the detection accuracy.

[0026] Working principle: First, place the pinhole component on the support bracket 6, adjust the position of the detection hole so that it corresponds to the detection cone column 8, and then use the cooperation of the swing arm 24 and the limit component to prevent the pinhole component from moving upward and separating from the support bracket 6 when the detection hole opening is pressed against the conical surface of the detection cone column 8, thereby improving the accuracy of the height measurement of the altimeter assembly. After fixing, drive the lifting frame 5 to descend so that the detection hole is plugged into the detection cone column 8.

[0027] As the height decreases, the opening of the detection hole will be pressed against the conical surface of the detection cone 8. At this time, the height of the pressing position of the opening of the detection hole and the conical surface of the detection cone 8 is quickly detected by the altimeter assembly. Since the size of the detection cone 8 is fixed, the outer diameter of the detection cone 8 at this height is the inner diameter of the detection hole. The inner diameter of the opening of the detection hole can be quickly obtained based on the detected height and the size of the detection cone 8 according to trigonometric functions.

[0028] At the same time, during the plugging process, the thickness measuring probe 36 detects the contour dimensions of the inner wall of the detection hole. The driving component drives the thickness measuring probe 36 to extend further into the detection hole, thereby increasing the detection range and improving the detection accuracy.

[0029] After the test is completed, the data detected by the thickness measuring probe 36 is compared with the inner diameter data of the test hole opening to obtain the difference and jump in the axial size of the test hole, thereby judging the stability of the circuit connection after the pinhole component is inserted.

[0030] Example 2: On the basis of Example 1, it is necessary to make the detection hole accurately correspond to the detection cone column 8, especially for the detection hole of the countersunk structure. The other end of the detection hole is not exposed, that is, there is a lack of positioning points on the upper end surface of the pinhole part, and it is difficult to determine whether the detection hole corresponds to the detection cone column 8. In order to improve the accuracy of the detection, it is necessary to ensure that the detection hole and the detection cone column 8 accurately correspond.

[0031] A pair of hydraulically telescopically driven driving rods 4 are symmetrically installed vertically on the detection frame 1, the lower end of the lifting frame 5 is fixed on the driving rod 4, the supporting frame 6 is provided with an image collector 19 for collecting the image of the lower end surface of the pinhole part, the upper end of the upper frame 3 is provided with a magnetic plate 18, the upper end of the laser instrument 21 is provided with an adsorption plate 22 connected to the magnetic plate 18, and the upper frame 3 is provided with an imager 23 that is electrically connected to the image collector 19 and projects the collected image onto the upper end surface of the pinhole part.

[0032] By setting up the image collector 19 and the imager 23, the position of the lower end countersunk hole is reversely projected onto the upper end surface of the pinhole piece, and then with the irradiation of the laser instrument 21, the position of the detection hole is accurately adjusted so that it is aligned with the detection cone 8.

[0033] Due to the requirement of precision, the detection hole can only be plugged into the detection cone 8, and it cannot be guaranteed that the centers of the circles coincide with each other.

[0034] The support frame 6 is provided with multiple groups of rotatably mounted longitudinal rollers 25, and a rotating seat 37 is provided at the end of the swing arm 24 pressed on the upper end of the pinhole member. The rotating seat 37 is provided with multiple groups of rotatably mounted transverse rollers 14 distributed in a circumferential array on bearings. The transverse rollers 14 are distributed vertically to the longitudinal rollers 25, and the arc outer wall of the lower end of the transverse roller 14 is pressed on the upper end surface of the pinhole member, and the lower end of the pinhole member is pressed on the arc outer wall of the upper end of the longitudinal roller 25.

[0035] By arranging the longitudinal roller 25 and the transverse roller 14, the pinhole component can be smoothly installed so that it can slide laterally in the gap between the swing arm 24 and the support bracket 6. During the plug-in process, due to the offset, the detection cone column 8 will laterally squeeze the orifice of the detection hole, so that the detection hole is automatically calibrated and accurately corresponds to the detection cone column 8.

[0036] Example 3: Based on Example 2, the altimeter assembly includes a vernier caliper and a side scale rod 15. The vernier caliper includes a main scale member 10 fixed to the side scale rod 15 and a sub-scale member 11 slidably mounted on the main scale member 10. The lower end of the side scale rod 15 is locked and fixed to the detection frame 1. The sub-scale member 11 is connected to the lifting frame 5 through a connecting rod 13. The origin of the sub-scale member 11 is flush with the supporting surface of the support frame 6, and the origin of the main scale member 10 is flush with the upper surface of the detection cone column 8. The two ends are flush, and a longitudinal through slot 17 is vertically provided on the detection frame 1. A screw hole 16 is provided on the side wall of the detection frame 1 and is vertically connected to the longitudinal through slot 17. A locking bolt 9 is threadedly installed in the screw hole 16. The lower end of the side ruler rod 15 is vertically inserted in the longitudinal through slot 17, and the end of the locking bolt 9 is pressed on the side wall of the side ruler rod 15. Slide grooves 12 are provided on the front and rear side walls of the main ruler part 10, and the auxiliary ruler part 11 is slidably inserted in the slide groove 12.

[0037] By setting the longitudinal through slot 17 and cooperating with the locking bolt 9, the height of the side ruler rod 15 can be fixed and adjusted. The side ruler rod 15 is used to adjust the height position of the vernier caliper so that its origin position corresponds to the detection cone column 8. The vernier caliper composed of the main ruler 10 and the auxiliary ruler 11 is used to improve the accuracy of height measurement and simultaneously improve the accuracy of the inner diameter of the orifice of the detection hole.

[0038] Example 4: Based on Example 3, the limiting member includes a fixed ratchet 20 and a collar 27. A main shaft 26 is provided at the upper end of the adjustment frame 7. The fixed ratchet 20 is fixedly sleeved on the main shaft 26. The outer wall of the fixed ratchet 20 is provided with multiple groups of ratchet teeth distributed in a circumferential array and arranged obliquely. The collar 27 is fixed to one end of the swing arm 24 and is rotatably sleeved on the end of the main shaft 26. A slider 29 is elastically and slidably installed in the collar 27. A paddle 30 is provided on one side of the slider 29 to engage with the ratchet teeth on the fixed ratchet 20. The ratchet limit paddle 30 on the fixed ratchet 20 can only rotate toward the pinhole part; a telescopic groove 28 is provided on the ring 27, a sleeve 31 is provided in the telescopic groove 28, the slider 29 is slidably sleeved on the sleeve 31, and one end of the sleeve 31 is sleeved with a first spring 33, one end of the first spring 33 is against the slider 29, and a pressure groove 32 is provided on the side of the swing arm 24 close to the telescopic groove 28, and the upper end of the slider 29 is provided with a horizontal plate located at the upper end of the telescopic groove 28 and extending into the pressure groove 32, and the upper end of the horizontal plate is provided with a rough layer.

[0039] By setting the telescopic groove 28 and cooperating with the first spring 33, the elastic sliding installation of the slider 29 on the ring 27 is realized, and then the engagement of the paddle 30 with the ratchet teeth on the fixed ratchet 20 is utilized to limit the swing arm 24 to rotate only toward the upper end of the pinhole part, thereby avoiding the lifting of the swing arm 24 during the extrusion process, causing the pinhole part to rise and resulting in a reduction in detection accuracy. At the same time, when resetting, the rough layer is utilized to facilitate driving the slider 29 to slide in the opposite direction, squeezing the first spring 33, so that the paddle 30 is separated from the ratchet teeth on the fixed ratchet 20, thereby realizing the rotational reset of the swing arm 24 and facilitating the disassembly of the pinhole part.

[0040] The lower end of the detection cone column 8 is provided with a fixing seat 35 that is fixedly connected to the detection frame 1 with bolts, and the lower end of the detection cone column 8 is provided with a lifting groove 39. The middle section of the thickness measuring probe 36 vertically passes through the detection cone column 8 and extends into the lifting groove 39. The lower end of the thickness measuring probe 36 is provided with a slide 38 located in the lifting groove 39. The lower end of the slide 38 is connected to the detection host 2 through a folded data cable 40. The driving component is arranged in the lifting groove 39 and is used to drive the slide 38 to rise and fall; the driving component includes a second spring 34, an annular airbag 41 and a micro air pump electrically connected to the detection host 2. The annular airbag 41 is pressed between the slide 38 and the detection frame 1, the second spring 34 is pressed between the slide 38 and the upper inner wall of the lifting groove 39, and the annular airbag 41 is connected to the micro air pump.

[0041] By setting a micro air pump to control the internal pressure of the annular airbag 41, the annular airbag 41 is expanded or contracted, thereby adjusting the position of the slide 38 to achieve the purpose of driving the thickness measuring probe 36 to extend and retract, thereby realizing extended detection inside the detection hole, increasing the detection range, and improving the detection accuracy.

[0042] A detection method based on a device for detecting the wall thickness of a pinhole part of an electrical connector, characterized in that the detection method comprises the following steps: Step 1: Place the pinhole component to be inspected on the support bracket 6, with the orifice to be inspected facing downwards, and adjust it to a position corresponding to the detection cone 8. Then, use the swing arm 24 and the limiter to prevent the pinhole component from rising when it is pressed against the conical surface of the detection cone 8, thereby limiting the upward movement of the pinhole component. Step 2: The lifting frame 5 descends, driving the detection hole of the pinhole component to be plugged into the detection cone 8. When it descends until the opening of the detection hole is pressed against the outer wall of the conical surface of the detection cone 8, the height of the opening at this time is measured by the altimeter assembly. Since the size of the detection cone 8 is fixed, the outer diameter of the detection cone 8 at this height is the inner diameter of the detection hole. The inner diameter of the detection hole can be quickly calculated based on the measured height and the size of the detection cone 8 according to trigonometric functions. Step 3: Use the driving assembly to drive the thickness measuring probe 36 to detect the inner wall thickness of the detection hole, thereby obtaining the inner contour size of the detection hole.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the wall thickness of a pinhole part of an electrical connector, comprising a detection frame (1), wherein a pair of symmetrically distributed vertical lifting frames (5) are provided on the detection frame (1), and an upper frame (3) for mounting a laser instrument (21) is provided at the upper end of the detection frame (1), characterized in that: A detection cone column (8) fixed on the detection frame (1) is vertically arranged in the gap between the pair of lifting frames (5); a support frame (6) for supporting the pinhole component is arranged on one side of the lifting frame (5) close to the detection cone column (8); a height gauge component for measuring the height of the support frame (6) is connected to the other side of the lifting frame (5); a detection host (2) is arranged in the detection frame (1); a thickness measuring probe (36) electrically connected to the detection host (2) is arranged at the upper end of the detection cone column (8); a driving component for driving the thickness measuring probe (36) to move up and down is arranged in the detection cone column (8); an adjustment frame (7) is arranged at the upper end of the lifting frame (5); a swing arm (24) is rotatably mounted on the adjustment frame (7); the swing arm (24) is pressed on the upper end surface of the pinhole component; and a limiter for limiting the swing arm (24) from rotating away from the pinhole component is arranged on the adjustment frame (7).

2. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 1, characterized in that: A pair of hydraulic telescopically driven driving rods (4) are symmetrically mounted vertically on the detection frame (1), the lower end of the lifting frame (5) is fixed on the driving rod (4), the supporting frame (6) is provided with an image collector (19) for collecting images of the lower end surface of the pinhole component, the upper end of the upper frame (3) is provided with a magnetic plate (18), the upper end of the laser instrument (21) is provided with an adsorption plate (22) connected to the magnetic plate (18), and the upper frame (3) is provided with an imager (23) electrically connected to the image collector (19) and projecting the collected image onto the upper end surface of the pinhole component.

3. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 2, wherein: The altimeter assembly includes a vernier caliper component and a side scale rod (15), the vernier caliper component includes a main scale component (10) fixed on the side scale rod (15) and a secondary scale component (11) slidably mounted on the main scale component (10), the lower end of the side scale rod (15) is locked and fixed on the detection frame (1), the secondary scale component (11) is connected to the lifting frame (5) through a connecting rod (13), and the origin of the secondary scale component (11) is flush with the supporting surface of the support frame (6), and the origin of the main scale component (10) is flush with the upper end of the detection cone column (8).

4. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 3, wherein: A longitudinal through slot (17) is vertically provided on the detection frame (1), and a screw hole (16) vertically connected to the longitudinal through slot (17) is provided on the side wall of the detection frame (1). A locking bolt (9) is threadedly installed in the screw hole (16). The lower end of the side ruler rod (15) is vertically inserted into the longitudinal through slot (17), and the end of the locking bolt (9) is pressed onto the side wall of the side ruler rod (15). Slide grooves (12) are provided on the front and rear side walls of the main ruler member (10), and the auxiliary ruler member (11) is slidably inserted into the slide groove (12).

5. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 3, wherein: The limiting member comprises a fixed ratchet (20) and a collar (27). A main shaft (26) is provided at the upper end of the adjusting frame (7). The fixed ratchet (20) is fixedly sleeved on the main shaft (26). The outer wall of the fixed ratchet (20) is provided with a plurality of groups of ratchets arranged obliquely and distributed in a circumferential array. The collar (27) is fixed to one end of the swing arm (24). The collar (27) is rotatably sleeved on the end of the main shaft (26). A slider (29) is elastically slidably installed in the collar (27). A paddle (30) meshing with the ratchet teeth on the fixed ratchet (20) is provided on one side of the slider (29). The ratchet teeth on the fixed ratchet (20) limit the paddle (30) to rotate only toward the pinhole member.

6. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 5, characterized in that: The sleeve ring (27) is provided with a telescopic groove (28), a sleeve column (31) is provided in the telescopic groove (28), a slider (29) is slidably sleeved on the sleeve column (31), and one end of the sleeve column (31) is sleeved with a first spring (33), one end of the first spring (33) is against the slider (29), a pressure groove (32) is provided on a side of the swing arm (24) close to the telescopic groove (28), and a transverse plate located at the upper end of the telescopic groove (28) and extending into the pressure groove (32) is provided at the upper end of the slider (29), and a rough layer is provided at the upper end of the transverse plate.

7. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 6, characterized in that: The support frame (6) is provided with a plurality of groups of rotatably mounted longitudinal rollers (25), the end portion of the swing arm (24) pressed against the upper end of the pinhole member is provided with a rotating seat (37), the rotating seat (37) is provided with a plurality of groups of rotatably mounted transverse rollers (14) distributed in a circumferential array on bearings, the transverse rollers (14) and the longitudinal rollers (25) are distributed vertically, and the lower end arc outer wall of the transverse roller (14) is pressed against the upper end surface of the pinhole member, and the lower end of the pinhole member is pressed against the upper end arc outer wall of the longitudinal roller (25).

8. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 7, characterized in that: The lower end of the detection cone (8) is provided with a fixing seat (35) fixedly connected to the detection frame (1) with bolts, and the lower end of the detection cone (8) is provided with a lifting groove (39). The middle section of the thickness measuring probe (36) vertically penetrates the detection cone (8) and extends into the lifting groove (39). The lower end of the thickness measuring probe (36) is provided with a slide plate (38) located in the lifting groove (39). The lower end of the slide plate (38) is connected to the detection host (2) through a folded data cable (40). The driving component is arranged in the lifting groove (39) and is used to drive the slide plate (38) to rise and fall.

9. The device for detecting the wall thickness of a pinhole component of an electrical connector according to claim 8, characterized in that: The driving assembly includes a second spring (34), an annular airbag (41) and a micro air pump electrically connected to the detection host (2); the annular airbag (41) is pressed between the slide plate (38) and the detection frame (1); the second spring (34) is pressed between the slide plate (38) and the upper inner wall of the lifting groove (39); and the annular airbag (41) is connected to the micro air pump.

10. A method for detecting the wall thickness of a pinhole component of an electrical connector, applied to the device for detecting the wall thickness of a pinhole component of an electrical connector according to any one of claims 1 to 9, characterized in that: The detection method comprises the following steps: Step 1: Place the pinhole component to be tested on the support bracket (6), with the orifice to be tested facing downwards, and adjust it to a position corresponding to the detection cone (8). Then, use the swing arm (24) and the limiter to prevent the pinhole component from rising when pressed against the conical surface of the detection cone (8), thereby limiting the upward movement of the pinhole component. Step 2: The lifting frame (5) descends, driving the detection hole of the pinhole component to be plugged into the detection cone (8). When the hole of the detection hole is lowered and pressed against the outer wall of the conical surface of the detection cone (8), the height of the hole at this time is detected by using the height gauge component. Since the size of the detection cone (8) is fixed, the outer diameter of the detection cone (8) at this height is the inner diameter of the detection hole. The inner diameter of the detection hole can be quickly obtained by trigonometric function through the detected height and the size of the detection cone (8); Step 3: Using the driving assembly to drive the thickness measuring probe (36) to detect the inner wall thickness of the detection hole, thereby obtaining the inner contour size of the detection hole.

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